Peningkatan pengeluaran larut dalam sisa pepejal perbandaran (MSW) menyebabkan pihak pengurus menghadapi masalah apabila tidak dapat mengawal pengeluaran air sisa larut. Apabila permintaan dari pengeluaran larut meningkat menyebabkan pengunaan ruang tanah yang tinggi disebabkan penggunaan kaedah proses konvensional enapcemar teraktif (ASP). Konvensional (ASP) mengunakan dua kaedah yang berbeza iaitu proces biologi and proses kimia dan juga beroperasi dalam tangki yang berbeza. Menyebabkan keperluan penggunakan ruang tanah yang besar, pihak industry perlu berbelanja kos yang tinggi untuk satu loji rawatan. Satu teknologi bari dicipta yang merupakan process enapcemar berbutir aerobik (AGS) dimana dua proses iaitu proses biologi and proses kimia dijalankan dalam satu tangki yang sama. Proses AGS ini dapat menjimatkan penggunaan tanah and juga lebih berkesan dan jimat berbanding dengan teknologi ASP. Tambahan pula, kajian juga dibuat terhadap air rawatan kumbahan dengan mengunakan proses AGS akan tetapi hanya sebilangan sahaja yang mengkaji air rawatan larut mengunakan proses AGS. Untuk kajian ini telah membuat pemerhatian therhadap perubahan bebutir aerobik didalam reaktor kumpulan penjujukan (SBR) dan termasuklah ciri fizikal seperti saiz, morfologi dan indeks volum enapcemar (SVI). Kondisi operasi yang digunakan dalam eksperimen ialah masa pengekalan hidraulik (HRT) adalah 48 jam dan masa kitaran 24 jam. Pada masa yang sama, kadar pengudaraan digunakan dalam eksperimen ialah 7 (L/min). Hasilnya mengesahkan kemungkinan diperolehi saiz granul aerobik yang memakan larut dalam tanah semasa proses permulaan. Berdasarkan pemerhatian dan perbincangan, saiz butiran semakin besar dimana granul berkembang pada operasi berterusan dalam tempoh 50 hari proses permulaan. Saiz telah diperhatikan dengan menggunakan CLSM. Bentuk dan saiz telah berubah kerana masa. Saiz purata bagi hari ke-1, ke-5, ke-12, ke-19, ke-26, ke-33, ke-40 dan ke-47 adalah 915.5, 135.0, 120.5, 76.5, 116.5, 129.5, 108.5 dan 94.0 (μm). Untuk pembentukan AGS menunjukkan saiz pada hari ke-1 adalah lebih besar daripada saiz pada hari ke-47. Ini kerana pada hari pertama, bentuk enapcemar diaktifkan adalah rata dan jalur panjang tetapi, pada tarikh ke-47 bentuknya telah berubah menjadi berbentuk berbutir.
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The increasing of leachate production in municipal solid waste (MSW) cause the management facing a problem when cannot controlled the production of leachate wastewater. When the demand from the leachate production increased caused of land acquisition became higher due to using an old method which was conventional activated sludge process (ASP). Conventional ASP used of two processes which are biological process and chemical process and been processing in two different tanks. Because of demanding in land acquisition, the industry needs to spend much cost for a treatment plant. A new technology been invented which was aerobic granular sludge (AGS) process where two processes which are biological process and chemical process been processing in one single tank. AGS process can save land acquisition and more efficient compared to conventional ASP technology. Furthermore, there are pilot study for sewage treatment by using AGS technology however there only a few studies that focusing on leachate treatment by using AGS technology. For this study was observed the formation of aerobic granules in sequencing batch reactor (SBR) and included physical characteristic such as size, morphology and sludge volume index (SVI). The operating condition was applied in the experimental were hydraulic retention time (HRT) was 48h and cycle time was 24h. At the same time, the aeration rate been used in experimental was 7 (L/min). The result confirms the possible to obtained aerobic granule size feeding landfill leachate during start-up process. Based on observation and discussion, the size of granules was getting bigger which the granules were growth at constant operation within 50 days of start-up process. The size had been observed by using CLSM. The shapes and the sizes were got changing due to time. The mean size for day 1st, 5th, 12th, 19th, 26th, 33rd, 40th and 47th were 915.5, 135.0, 120.5, 76.5, 116.5, 129.5, 108.5 and 94.0 (μm) respectively. For the AGS formation showed the size on day 1st was bigger than the size on day 47th. This is because on day 1st, the shape of activated sludge was flat and long strips but, on dah 47th the shape was changed to granular shaped.
Relationship between physical characteristic of aerobic granular sludge (ags) with removal preformance in leachate treatment / Mohd Ikram Shariff