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"Lindi merupakan cairan yang terbentuk oleh adanya air hujan yang merembes ke dalam timbunan sampah. Konsep keseimbangan air digunakan untuk menentukan timbulan lindi di suatu TPA. Dalam penentuan timbulan lindi, nilai field capacity (FC) sampah merupakan salah satu parameter yang menentukan terhadap banyaknya lindi yang terbentuk. Pemodelan lysimeter dalam penelitian ini dilakukan untuk mengetahui pengaruh resirkulasi lindi terhadap nilai FC sampah. Perhitungan nilai FC sampah skala laboratorium dilakukan dengan membandingan berat atau volumetrik air dengan berat atau volumetrik sampah pada lysimeter. Nilai FC sampah yang didapatkan selanjutnya digunakan untuk menghitung perkolasi lindi yang dihasilkan di TPA Cipayung selama setahun dengan menggunakan Metode Neraca Air Thornthwaite. Sampah pada penelitian ini diambil dari Pasar Kemiri Muka Depok. Penambahan asupan air sebagai simulasi air hujan dan terjadinya kebocoran pada lapisan geotekstil pada kedua lysimeter sebesar 1,4 L. Air lindi yang diresirkulasikan pada lysimeter 1 adalah 1,5 L. Penelitian ini menjadi penting dilakukan, karena dapat digunakan sebagai dasar pertimbangan untuk evaluasi pengolahan lindi yang ada di TPA Cipayung,terutama dalam hal penentuan potensi timbulan lindi dari landfill.Hasil pemeriksaan menunjukkan bahwa nilai kadar air sampah awal pada lysimeter terbilang tinggi, yaitu sebesar 80,6 %. Nilai FC sampah pada lysimeter 1 yaitu sebesar 0,592 L/kg atau 59,2 % atau 276,53 mm/m, sementara pada lysimeter 2 nilainya adalah 0,449 L/kg atau 44,9 % atau 442,93 mm/m. Semakin tinggi nilai FC sampah, maka jumlah timbulan lindi menjadi kecil dan sebaliknya apabila nilai FC sampah kecil, timbulan lindi semakin besar. Total perkolasi lindi di TPA Cipayung selama setahun menggunakan nilai FC dari sampah pada lysimeter dengan resirkulasi lindi (lysimeter 1) adalah sebesar 1.210 mm. Total perkolasi menggunakan nilai FC dari sampah dengan lysimeter tanpa resirkulasi (lysimeter 2) adalah sebesar 1.211 mm. Tidak terlihat perbedaan nilai perkolasi lindi di TPA Cipayung dari bulan Januari-Agustus dan dari bulan Oktober-Desember. Perbedaan nilai perkolasi hanya terjadi pada bulan September yaitu sebesar 38 mm bila dengan menggunakan resirkulasi lindi dan 39 mm bila tanpa resirkulasi lindi). Hal tersebut dikarenakan data curah hujan, temperatur, dan koefisien run-off yang digunakan pada kedua lysimeter mempunyai nilai yang sama. Selain itu, adanya perbedaan ketinggian sampah pada kedua lysimeter yang mencapai 0,32 m diduga turut mempengaruhi besarnya hasil perkolasi lindi pada hasil perhitungan ini. Perlu adanya keseragaman susunan lapisan (capping) di dalam seluruh lysimeter, sehingga hasil yang didapat bisa lebih dibandingkan.

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Leachate is a liquid that is formed by the rain water that seeps into the waste heap. The concept of the water balance is used to determine the generation of leachate in a landfill. In determining the leachate generation, the value of field capacity (FC) of waste can be used as one of the parameters. Lysimeter simulation is conducted to determine the effect of leachate recirculation to FC value. The value of FC is calculated by comparing between the water weight or volume with the waste weight or volume in the lysimeter. Furthermore, the value of FC is utilized to calculate leachate generated at Cipayung Landfill within a year by using Thornthwaite Water Balance Method. Solid waste that is utilized in this study was taken from Kemiri Muka traditional market-City of Depok. The amount of additional water into lysimeter is based on the amount of rainfall (precipitation) in Depok and the assumption of leakage rate of geotextile layer on the top of both lysimeter. Thus, 1.4 liter of water is supplied into both lysimeter and additional 1.5 liter of leachate supplied into one of lysimeter as leachate recirculation.Lysimeter 1 is appointed as lysimeter with leachate recirculation and lysimeter 2 is as lysimeter without leachate recirculation. This research is important because it can be used as a basis for evaluation on the existing leachate treatment at Cipayung Landfill especially in estimating of leachate quantity that is coming from landfill.The results showed that the initial moisture content of waste in the lysimeter is approximately 80.6%. The value of FC of waste in lysimeter 1 and 2 is approximately 0.592 L/kg or 59.2% or 276.53 mm/m and 0.449 L/kg or 44.9% or 442.93 mm/m, respectively. The higher the value of FC of waste, the lower the amount of leachate volume generated, and vice versa. Total percolation of leachate at Cipayung Landfill within a year by using these both FC values is 1,210 mm with leachate recirculation and 1,211 mm without leachate recirculation. No visible difference in the amount of leachate percolation at Cipayung Landfill during January to August and October to December. The difference only occurred in September, which is 38 mm and 39 mm by using and not using leachate recirculation, respectively. These results took place due to the same value of rainfall and temperature data, and also the run-off coefficient that is utilized in both calculations. In addition, the difference in waste height on both lysimeter that reached 0.32 m supposedly influenced the amount of leachate generated. Therefore, for the next research, the entire lysimeter should be made on the same condition to obtain good and comparable results."

"Meningkatnya produksi sampah akibat aktivitas manusia mengakibatkan terjadinya penumpukan di Tempat Pemrosesan Akhir TPA. Kondisi tersebut menyebabkan lahan TPA menjadi semakin terbatas. Untuk mengatasi permasalahan tersebut salah satu metode yang dapat dilakukan adalah dengan mempercepat proses stabilisasi landfill melalui mekanisme resirkulasi lindi. Dalam prosesnya mendekomposisi sampah air lindi yang dihasilkan dari landfill akan berpotensi mencemari lingkungan bila tidak ditangani dengan tepat. Di antara senyawa berbahaya yang terdapat dalam air lindi diantaranya adalah senyawa nitrogen baik berupa ammonia nitrit maupun nitrat.Tujuan dilakukannya penelitian ini adalah untuk mengetahui konsentrasi ammonia nitrit dan nitrat pada air lindi yang dihasilkan dari lysimeter dengan dan tanpa proses resirkulasi serta untuk mengetahui waktu pembentukan senyawa ammonia nitrit dan nitrat dalam lysimeter terkait dengan kondisi temperatur sampah dan pH lindi. Penelitian dilakukan dengan membuat pemodelan sistem sanitary landfill dalam dua buah lysimeter masing masing untuk proses dengan resirkulasi dan tanpa resirkulasi. Pada lysimeter juga diberikan asupan air sesuai dengan data curah hujan yang ada.Hasil pengamatan terhadap kedua lysimeter selama 100 hari menunjukkan bahwa konsentrasi ammonia dan nitrat pada lysimeter dengan resirkulasi lysimeter A cenderung lebih tinggi dibandingkan pada lysimeter tanpa resirkulasi lysimeter B. Sedangkan untuk konsentrasi nitrit pada kedua lysimeter tidak menunjukkan perbedaan yang berarti. Senyawa ammonia nitrit dan nitrat pada kedua lysimeter sudah terbentuk sejak awal penelitian meskipun pada awalnya memiliki nilai yang relatif rendah. Terkait dengan temperatur sampah diketahui bahwa pelepasan ammonia tertinggi terjadi pada temperatur 30°lC Sedangkan terkait dengan pH lindi konsentrasi ammonia meningkat pada rentang nilai pH 7 5 8.

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A rapid increase in waste volumes caused by human activities resulted in the accumulation of waste in landfill. This condition causes landfill that willrun out of space within years In order to overcome this problem leachate recirculation is applied to accelerate waste stabilisation. Leachate generated from landfill would potentially contaminate the environment if not handled properly. Among the hazardous substances contained in leachate some of them are nitrogen compounds such as ammonia nitrite and nitrate.The objective of the research project was to investigate ammonia nitrite and nitrate concentrations in leachate generated from lysimeters with and without recirculation as well as to determine the time formation of ammonia nitrite and nitrate in lysimeters associated with waste temperature and leachate pH. Two lysimeters were used to simulated sanitary landfill with and without recirculation. Water was added to both lysimeters in accordance with the rainfall data.Experiments carried out in lysimeters demonstrated that for 100 days the concentrations of ammonia and nitrate in lysimeter with recirculation lysimeter A tend to be higher than in lysimeter without recirculation lysimeter B. However nitrite concentration in both lysimeters showed no significant differences. Ammonia nitrite and nitrate in both lysimeters have been formed since the beginning of the study in low concentration. Associated with waste temperature the highest ammonia release occured at temperature of 30°C andrelated to leachate pH ammonia concentration increased in the range of 7 5 8 pH value."

"Penelitian ini bertujuan untuk mengetahui pengaruh resirkulasi air lindi terhadap kualitas air lindi. Penelitian ini menggunakan 2 lysimeter dengan sistem pengoperasian yang berbeda, lysimeter 1 dengan proses resirkulasi air lindi dan lysimeter 2 tanpa proses resirkulasi. Sampah yang digunakan pada kedua lysimeter merupakan sampah organik (buah dan sayur) yang berasal dari Pasar Kemiri Muka, Depok. Berat sampah pada lysimeter 1 dan 2 secara berurutan adalah 205 kg dan 180 kg dengan kadar air sebesar 89,5% dan 86,8%. Penambahan air dilakukan pada kedua lysimeter untuk menstimulasi pembentukan air lindi dan sebagai simulasi infiltrasi air hujan dengan mengasumsikan adanya kebocoran sebesar 24% pada lapisan geotextile. Volume penambahan air pada kedua lysimeter yaitu 1,4 L yang disesuaikan dengan curah hujan kota depok, sedangkan volume air lindi yang diresirkulasikan pada lysimeter 1 yaitu 1,5 L. Pengukuran karakteristik air lindi yang meliputi pH air lindi, konsentrasi TSS dan TDS serta temperatur sampah pada kedua lysimeter dilakukan selama 100 hari. pH air lindi yang dihasilkan dari lysimeter 1 (dengan resirkulasi) cenderung lebih rendah hingga akhir pengoperasian lysimeter karena penerapan resirkulasi air lindi, yaitu berada pada rentang 5,73-8,25 pada lysimeter 1 dan 5,93-8,94 pada lysimeter 2. Konsentrasi TSS pada lysimeter 1dan lysimeter 2 secara berurutan berada pada rentang 660-2792,411 mg/L dan 200-1660 mg/L, sedangkan untuk konsentrasi TDS berada pada rentang 6004-17120 pada lysimeter 1dan 3340-14860 mg/L pada lysimeter 2. Konsentrasi TSS dan TDS pada lysimeter 1 lebih tinggi dibandingkan dengan lysimeter 2 karena proses resirkulasi yang diterapkan pada lysimeter 1 menyebabkan akumulasi material organik (volatile fatty acids) pada air lindi selama fase awal degradasi sampah (asidogenesis) serta akumulasi material anorganik (amonia dan klorida) pada air lindi hingga akhir pengoperasian lysimeter 1 karena material anorganik tersebut tidak digunakan lagi pada proses degradasi sampah.

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This study aims to determine the effect of leachate recirculation on leachate quality. It uses two lysimeter with different operating systems, lysimeter 1 with leachate recirculation process and lysimeter 2 without recirculation process. Waste which used in both lysimeter is organic waste (fruit and vegetable) derived from Pasar Kemiri Muka, Depok. Respectively, the weight of waste in lysimeter 1 and 2 were 205 kg and 180 kg and the water content were 89,5% and 86,8 %. The addition of water carried in both lysimeter was to stimulate the formation of leachate and to simulate the infiltration of rain water by assuming the occurrence of the leakage (24%) in the geotextile layer. The volume of water added in both lysimeter was 1,4 L adjusted with rain fall intensity in Depok, while the volume of leachate that resirculated in lysimeter 1 was 1,5 L. The leachate samples from both of lysimeters were monitored for pH, TSS, TDS and waste temperature during 100 days of study. Leachate pH generated from lysimeter 1 (with resirculation) tended to be lower by the end of the operation because the application of leachate resirculation, which is in the range 5,73 to 8,25 in lysimeter 1 and 5,93 to 8,94 in lysimeter 2. TSS concentrations in lysimeter 1 and 2 respectively in the range from 660 to 2792.411 mg /L and 200-1660 mg/L, while the concentration of TDS lies in the range 6004 to 17120 in lysimeter 1 and 3340 to 14860 mg/L in lysimeter 2. TSS and TDS concentrations in lysimeter 1 were higher than lysimeter 2 due to the recirculation process that was applied to the lysimeter 1 which causes accumulation of organic material (volatile fatty acids) in the leachate generated in the initial phase of waste degradation (asidogenesis) and accumulation of inorganic material (ammonia and chloride) in lysimeter 1 until the end of the operation as the inorganic material is no longer used in the process of waste degradation."

"Landfills Namo Bintang located on the street Pancurbatu - Delitua, sub Pancur Batu, Deli Serdang regency, is a reservoir of waste that came from Medan city and District Pancurbatu. With the operation of the wholesale market Tuntungan (moving from the morning market in Medan Sutomo road) which is located about 3 km from the landfill, then the volume jpf waste in the landfill Namo Bintang will be increased and more smell; reopening of the landfill to collect the garbage from the wholesale market on the market Pancurbatu. Landfills Namo Bintang yet have sewage treatment facilities into materials that are more useful for example compost, landfills is impressed less attention and garbage only in landfills without ig processed at all. The number of garbage collectors who came to take it waste, scrap metal, etc., make it look alive landfill, but the location is seedy and smelly. Around the landfill, there are houses, mostly of ethnic and Java. The content of heavy metals in water wells around the 11, creates a need for us to conduct research chemical analysis of the We from landfills Namo Bintang, whether leachate from the landfill Bintang has been contaminated by heavy metals such as (0,00034mg/L), iron(0,00078mg/L), zinc(0,00S7MG/l), (0,00058mg/L), lead(0,00087mg/L) and arsenic(0,00032mg/L) e garbage is piled on the location of the landfill. The results of laboratory analyzes showed no heavy metals exceeded the threshold contained in the leachate from the three locations. This proves the absence of that occurred in leachate from three sampling sites"

"ABSTRAKLeachate yang terbentuk dari hasil penguraian secara biologis dan fotolisis pada sampah mengandung bahan pencemar organik dan anorganik yang tinggi. Bila masuk ke badan air penerima akan mengubah kualitas airnya yang pada gilirannya secara Iangsung atau tidak langsung akan berdampak negatif terhadap kehidupan manusia.Kali Ciketing dan Sumur Batu merupakan 2 sungai kecil yang melintas di Tempat Pembuangan Akhir (TPA) Sampah Bantar Gebang. Sungai itu dimanfaatkan sebagai penerima leachate yang telah diolah. Masukan leachate ke Kali Ciketing dan Sumur Batu menyebabkan kualitas air berubah dan melewati baku mutu untuk pertanian yang ditetapkan berdasarkan SK Gubernur Jawa Barat No. 38 Tahun 1991. Kemampuan pemurnian alami sungai diduga dari perhitungan nilai K. Hasil perhitungan nilai K pada Kali Ciketing dan Sumur Batu dilihat dari perubahan nilai COD sebesar 8,7 x 10"$1 detik dan dilihat dari nilai BOD sebesar 9,8 x 10-$ / detik. Nilai K dianggap bagus bila rnendekati 1 /detik. Pada Kali Ciketing dan Sumur Batu nilai K yang didapat sangat kecil yang berarti kemampuan kali untuk memumikan diri sangatlah berat dalam menerima beban masukan yang ada.Hasil evaluasi terhadap Bangunan Pengolah Leachate (BPL) yang ada temyata kurang efisien karena jumlah produksi leachate yang terbentuk melebihi perkiraan semula. Oleh karena itu perlu dilakukan peningkatan efisiensi kerja BPL yang ada dengan cara modifikasi proses.Proses Activated Sludge dipilih sebagai salah satu alternatif dalam modifikasi proses dalam BPL dengan pertimbangan faktor lingkungan, teknologi dan tidak terlaiu merubah disain BPL yang telah ada.Untuk mengetahul kinerja proses activated sludge dalam pengolahan leachate dilakukan uji laboratorium. Hasil pengamatan menunjukkan kemampuan proses dalam menurunkan beban pencemar dilihat dari nilai TSS sebesar 76,63 %, kekeruhan 71,40 To, BOD 88,73 %, COD 81,73 %, NH3-N 68,08 %, dan P04-P 61,91 %. Hasil pendugaan secara statistik dengan asumsi terjadi pertumbuhan logaritmik didapat penghilangan BOD = 95 % dan COD = 90 % pada pengoperasian reaktor ± 60 hari sejak start up. Hasil pengujian statistik dengan ANOVA yang dilanjutkan dengan uji beda nyata terkecil secara umum menunjukkan perlakuan pemberian aerasi dan pengendapan dalam proses activated sludge berpengaruh nyata pads tingkat kepercayaan 95 %.Untuk mendapatkan nilai-nilai seperti pada percobaan di laboratorium, maka perencanaan pengembangan BPL menggunakan tipe Step Feed Activated Sludge (SFAS). Konstruksi BPL yang ada tetap dipergunakan dengan menambah beberapa instalasi lagi seperti bak pengendapan dan bak pengering Lumpur.Dengan modifikasi proses yang dapat meningkatkan efisiensi BPL, diharapkan keluaran leachate dari BPL sesuai dengan baku mutu yang diharapkan.

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ABSTRACT

The Influence Of Leachate Toward The Stream And Improvement Of The Leachate Treatment Plant (Case Study in the Final Solid Waste Disposal Bantar Gebang, Bekasi)The leachate formed from as a result of biological degradation and photolysis of salid waste contain concentration of organic and anorganic pollutant material. If the leachate entered the recipient body water its quality will be changed. This in turn will have a'negative impact, directly or indirectly, toward the quality of human life.

Kali Ciketing and Sumur Batu are 2 streams which cross the Location of Final Solid Waste Disposal of Bantar Gebang. The stream are utilized as the receivers of the processed leachate. The intake to the streams Ciketing and Sumur Batu caused the water quality to change and exceed the water quality standard for agriculture as stipulated, based on the Decree of the West Java Governor No. 38, 1991.

The natural ability of the rivers to purify the water is estimated by the value of K. The calculation of the K value in Ciketing and Sumur Batu streams can be seen in terms of the COD value chage which is 8.7 x 10 'S /second and can be seen ini terms of the BOD value which is 9.8 x 10 "S /second. The K value is considered as good if it approximate 1/second. In the cases Ciketing and Sumur Batu streams the K values obtained are very small which means that the rivers abilities for self purification are low, meaning that is hard to receive further load intake.

Therefore, an evaluation is carried out toward the existing Leachate Treatment Plant (BPL) which turned out that it is inefficient, because the amount of leachates production exceeds the previous estimate. As a result, an improvement of the existing BPL efficiency is needed by modifying the process.

The Activated Sludge is chosen as an alternative in the modification process of the BPL becuse the environmental factors and technology do not require much modification of the existing BPL.

To know the performance of the leachate process, laboratory test are carried out. The observation results indicate that the process ability in decreasing the pollutant load in terms of TSS value is 76.63 %, turbidity 71.40 %, BOD 88.73 %, COD 81.73 %, NH3-N 68.08 %, and P04-P 61.91 To. While according to the statistical test obtained assuming the occurence of logarithmic growth a reduction the BOD of 99 % and COD of 90 % by operating the reactor about 60 days since the start up. The statistical test with ANOVA followed by the least square significance difference test, generally, indicate that the aeration treatment and sedimentation in the Activated Sludge process is significantly influenced at the confident level 95 %.

To achieve the above laboratory values, the BPL should be modified by applying the Step Feed Activated Sludge (SFAS). The existing BPL construction is used by adding several other installation such as sedimentation pool and mud drying pool.

With these process modifications which can increase the BPL efficiency, it is expected that the leachate output of the BPL will be within the required standard quality."

"Material lignoselulosa yang mengandung tiga kompenen utama, yaitu selulosa, hemiselulosa, dan lignin, diketahui sulit untuk didegradasi melalui proses biologis. Selulase telah terbukti mengkatalis degradasi selulosa dengan menggunakan hidrolisis enzimatik. Namun, penambahan selulosa diperkirakan bisa mempengaruhi kualitas air lindi yang dihasilkan. Tujuan dari penelitian ini adalah menganalisis efek penambahan enzim terhadap kualitas air lindi. Dua 1,5 meter bioreaktor disediakan untuk dua perlakuan, yaitu 1 resirkulasi air lindi dengan penambahan enzim, 2 hanya resirkulasi air lindi sebagai kontrol. Penambahan enzim selulase sebanyak 15 x 106 U/ton menghasilkan konsentrasi COD lebih rendah 29,100 mg/L dengan penambahan enzim dan 31,900 mg/L pada kontrol , TS 17,800 mg/L dan 22,100 mg/L , TDS 15,900 mg/L and 19,800 mg/L. Hal ini mungkin disebabkan oleh percepatan hidrolisis menggunakan proses enzimatik. Namun, nilai BOD lebih tinggi ketika penambahan enzim dilakukan 16,100 mg/L dan 11,600 mg/L disebabkan karena penambahan enzim mendorong pembentukan glukosa, sehingga meningkatkan nilai BOD. Nilai pH meningkat seiring waktu menuju netral, mengindikasikan landfill telah menuju fase metanogenik. Dari penelitian ini, bisa disimpulkan bahwa penambahan enzim pada landfill mempunyai dampah pada kualitas air lindi yang dihasilkan.

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Lignocellulose material which consist of three main component, including cellulose, hemicellulose, and lignin, was known hard to degrade using biological process. Cellulase has proven to catalyst the degradation of celullose by enzymatic hydrolysis. However, the addition of enzyme might affect leachate qualities that was emitted from landfill. The aim of this research is to analyses the effect of cellulase addition on leachate qualities. Two 1.5 m height bioreactors was provided for two different treatment including 1 leachate recirculation with cellulase addition 2 leachate recirculation only as control. The addition of cellulase at 15 x 106 U tonne was resulting lower concentration for COD 29,100 mg L in cellulase addition and 31,900 mg L in control, TS 17,800 mg L and 22,100 mg L, respectively, TDS 15,900 mg L and 19,800 mg L, respectively. This was likely caused by acceleration of hydrolysis using enzymatic process. However, BOD value higher when cellulase addition was conducted 16,100 and 11,600 mg L, respectively because the addition of cellulase was supported formation of glucose, therefore escalate BOD value. pH value was increasing over time towards neutral, indicates landfill has been headed toward methanogenic phase. From the experiment, it can be concluded that addition of cellulase has impacts towards leachate qualities."

"The area of Bandung municipality was 16,180.65 hectares with a population of 1,806,409 persons; so that it categorized as area with high population density that was 112 persons per hectares noted in 1998. It was implied that the high density of population by land use in 1997, which was more than 70% of this area occupied for settlement and industrial regions. With such populated area, one could expect a huge amount of waste accumulated. Municipal solid waste generated approximately 8,000 m3 per day that was disposed to three disposal sites. These were located at TPA (Tempat[ Pembuangan Akhir) Sampah Leuwigajah, Jelekong and Pasir Impun. These areas operate until the year 2002. Therefore, Bandung municipality should seek a new location for disposal site.To find new disposal site based on scientific considerations, geographical information system and approach were employed. The methods used were overlaying techniques with scoring method. The scoring method consisted of physical and social parameters. To determine the most suitable location, technical measurement was also considered. Solid waste disposed to TPA will be decomposed that create odor, gas and liquid that impact on the environment. Gas, especially methane would be flammable. While, the liquid might produce leachate that will be absorbed by the soil surface. In consequence, it would contaminate the ground water. Therefore, in determining most suitable disposal site one must discern physical and social conditions.According to SK SNI T-11-1991-03 regarding TPA Sampah (Waste Disposal Site) Selection Procedures, physical condition parameters must be considered, e.g. altitude, slope, geological risk, soil type, and water table. While social condition parameters consist of population density, land use, and distance from waste source. Each parameter was scored according to the condition. Then, each thematic map was overlaid one to the other to have strata of the most suitable, suitable and not suitable areas for disposal site based on physical and social parameters.There are 37 most suitable locations that must be analyzed to obtain selected location. Then, technical consideration was applied to determine the selected location. The technical consideration parameters contained location area, water discharge and recharge system, accessibility, and distance from the river, distance from the airport, traffic condition, and windrow. The most important parameter was location area. The measurement for location area with assumption for 15 years of operation period, and eight kecamatan would dispose its waste to the selected location. The eight kecarnatan were Margahayu, Margaasih, Katapang, Dayeuhkolot, Soreang, Cimahi Selatan, Cimahi Tengah and Cimahi Utara. These were highly dense population, so that it would not have its own disposal site. The disposal site area required would be around 212.12 hectares. In conclusion, the proposed, most suitable location for Bandung Municipal Solid Waste disposal site would be the area of 357.49 hectares, which was located in the border of Kecamatan Soreang and Katapang."

"This study focuses on treatment of landfill leachate in column experiments by immobilized trametes versicolor on polyurethane foam, collected from nonthaburi landfill site, thailand...."

"Pengelolaan sampah perkotaan di Indonesia tidak dapat lepas dari peran Tempat Pembuangan Akhir (TPA). Salah satu TPA sampah yang menerapkan sistem sanitary landfill adalah TPST Bantargebang. Perencanaan TPST Bantargebang sudah sesuai dengan prosedur perlakuan landfill, namun pemeliharaan dan monitoring yang dilaksanakan pengelola TPST belum sempurna karena Undi masih keluar dari lingkungan TPST. Peningkatan kinerja lingkungan IPAS IV TPST Bantargebang sangat diperlukan sehingga efluen yang dihasilkan dapat memenuhi standar baku mutu yang telah ditetapkan dan dampak yang ditimbulkan ke lingkungan dapat diminimalkan. Penelitian ini dilakukan untuk mengetahui kinerja IPAS IV dalam hal mengolah Undi; menganalisis pengaruh Undi pada kualitas air sumur penduduk; menganalisis pengaruh Undi pada Sungai Gketing-Sumur Batu. Penelitian untuk mengetahui kualitas Undi dan efisiensi bak pengolahan Undi dilakukan di inlet, outlet, dan masing-masing bak yang ada di IPAS IV. Penelitian untuk mengetahui pengaruh Undi terhadap kualitas air sungai dilakukan di sepanjang Kali Ciketing dan Kali Sumur Batu. Penelitian untuk mengetahui pengaruh Undi terhadap kualitas air sumur penduduk dilakukan dengan pengambilan sampel sumur penduduk yang masih digunakan penduduk untuk keperluan sehari-hari dan berada di sekitar lokasi TPST Bantargebang. Hasil perhitungan menunjukkan persentase penyisihan yang dicapai oleh IPAS TV untuk beberapa parameter kunci masih belum optimal, yaitu SS sebesar 43,78%, COD sebesar 78%, BOD sebesar 76,2%, dan ammonia sebesar 96,06%. Parameter utama yang lain, misalnya nitrit, nitrat, dan besi setelah pengolahan di IPAS IV nilainya bertambah besar. Parameter utama Undi yang mencemari air sungai adalah SS, nitrat, nitrit, COD, dan BOD. Parameter utama Undi yang mencemari air sumur adalah SS, pH, nitrat, dan besi. Dari hasil penelitian dapat disimpulkan bahwa Kinerja pengolahan IPAS IV TPST Bantargebang masih belum optimal.

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Treatment system of urban waste in Indonesia related to Municipal Waste Disposal Site (MWDS). One of MWDS that used sanitary /andfill system is MWDS Bantargebang. MWDS Bantargebang planning has been same with /andfill procedure, but maintenance and monitoring by MWDS manager does not good because leachate still goes outof MWDS area that will be impacted to stream water guaiity and soil water guaiity in around MWDS. Considering the bad impact that was caused, the improvement environment efficiency of leachate treatment plant (LTP) IV is really needed, so efhuent that was produced could pass the Standard o f guaiity that was determined and the Impact could minimized. The goals of this thesis are to know the efficiency of Leachate Treatment Plant IV MWDS Bantargebang to threat leachate, to anafyze the impact of leachate for soil water guaiity especially ground water in around MWDS Bantargebang, and to analyze the impact of leachate for stream water guaiity (Ciketing-Sumur Batu River). The researches of leachate guaiity and the leachate treatment units efficiency located in inlet, outiet, and each unit in Leachate Treatment Plant IV MWDS Bantargebang. The research of leachate impact to stream water guaiity located in throughout Ciketing and Sumur Batu River. The research of leachate impact to soil water guaiity especially ground water by doing take a ground water sample that still in used for dally purpose and located in around MWDS Bantargebang. Calculation result shown the percentage of eliminab'on that was reached by LTP IV for several key parameters still not yet optimal, such as SS is 43,78%, COD is 77,9%, BOD is 76,2%, and ammonia is 96,06%. The value ofthe other parameter, such as nitrit, nitrate, and ferro became increased after treated in LTP IV. The main leachate parameter that pollute the stream water are SS, nitrate, nitrit, COD, and BOD. The main leachate parameters that pollute the ground water are SS, pH, nitrate, and ferro. The conclusions o f this research are the Leachate Treatment Plant IV efficiency is still not yet optimized. LTP IV cannot decllne pollutant load as expected due to lack of installation support to the leachate load."

"Sampah di wilayah perkotaan menjadi salah satu permasalahan rumit yang membutuhkan pengolahan dan pengelolaan secara komprehensif. Penimbunan sampah menghasilkan ekstrak cairan yang sangat pekat (lindi) dan bersifat toksik karena mengandung logam serta materi organik yang tinggi. Salah satu metode yang saat ini banyak dikembangkan adalah teknologi Advanced Oxidation Process (AOPs) menggunakan ozon dan plasma. Teknologi AOPs memiliki beberapa kelebihan, diantaranya mudah dikendalikan, tidak membutuhkan area yang luas, dan waktu yang singkat. Penelitian ini dilakukan dengan mengalirkan lindi ke dalam rangkaian reaktor DBD plasma yang dikombinasikan dengan gelembung nano. Gas yang dialirkan ke dalam reaktor DBD bereaksi dengan plasma dan mengubah O2 menjadi O3 serta radikal lainnya. Kunci dari AOPs yaitu pembentukan oksidator kuat berupa radikal hidroksil (•OH). Namun, kelangkaan radikal hidroksil dalam ozonasi menjadi penghalang utama ozon untuk meremediasi lindi sepenuhnya. Maka, solusi untuk mengatasi permasalahan ini yaitu dengan menambahkan katalis berupa karbon aktif dan/atau zeolit pada proses ozonasi. Umpan gas oksigen paling efektif digunakan pada penelitian ini. Didapatkan hasil terbaik menggunakan ROPN/GAC hulu 17 kV selama 60 menit dengan persentase penyisihan BOD, TSS, TDS, TOC, dan nitrat sebesar 93,67%, 100%, 45,45%, 87,5%, dan 91,12%. Penyisihan COD selama 60 menit paling baik didapatkan pada ROPN/Zeolit hilir 15 kV sebesar 87,48%. Namun, penyisihan COD selama 135 menit didapatkan paling baik menggunakan ROPN/GAC hulu 17 kV sebesar 87,78%. Penyisihan makro anorganik paling baik didapatkan pada sistem ROPN/Zeolit dengan penyisihan Na, K, Mg, dan Ca berurutan 90,64%, 94,67%, 83,76%, dan 81,81%. Hasil GCMS menunjukkan terbentuknya senyawa antara yang berbeda antara ROPN/GAC dan ROPN/Zeolit berurutan yaitu Octadecamethyl-cyclononasiloxane dan 2-(1-methylpropyl)-Cyclopentanone.

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Urban waste is one of the complex issues requiring comprehensive processing and management. Waste accumulation yields highly concentrated liquid extract (leachate) that is toxic due to its high content of metals and organic matter. One of the methods currently being developed is Advanced Oxidation Process (AOPs) technology using ozone and plasma. AOPs technology offers several advantages, including easy control, minimal space requirement, and short processing time. This research was conducted by flowing leachate into a ozone plasma nanobubble reactors. The gas flowing into the DBD reactor reacts with the plasma, converting O2 into O3 and other radicals. The key to AOPs is the generation of strong oxidator in the form of hydroxyl radicals (OH). However, the scarcity of hydroxyl radicals in ozonation is a major obstacle to ozone's complete remediation of leachate. Therefore, the solution to this problem is to add catalysts such as activated carbon and/or zeolite to the ozonation process. Oxygen gas feed was found to be most effective in this study. The best results were obtained using ROPN/GAC pre-treatment at 17 kV for 60 minutes with removal percentages of BOD, TSS, TDS, TOC, and nitrate at 93.67%, 100%, 45.45%, 87.5%, and 91.12%, respectively. The best COD removal for 60 minutes was achieved with ROPN/Zeolite post-treatment at 15 kV, reaching 87.48%. However, the best COD removal for 135 minutes was obtained using ROPN/GAC pre-treatment at 17 kV, reaching 87.78%. The best removal of inorganic macro elements was achieved with the ROPN/Zeolite system, with removal percentages of Na, K, Mg, and Ca at 90.64%, 94.67%, 83.76%, and 81.81%, respectively. GCMS results showed the formation of different intermediate compounds between ROPN/GAC and ROPN/Zeolite, namely Octadecamethyl-cyclononasiloxane and 2-(1-methylpropyl)-Cyclopentanone."