The objective of this study was to study the feasibility and efficiency of organic carbon susp ended solids and nitrogen removal by a new developed technology, Sequencing Moving Bed Reactor/Filter Process. This process consists of two reactors, i.e ., the first one, called Moving Bed Reactor (MBR), is the aeration tank, responsed for organic carbo n removal and the second one works as a filter to prevent biomass lost with the effluent. The experiments were devided into two parts, i.e., one is applied with organic loading rate of 6.7 kgCOD/m3 (of media in MBR reactor) and another is 13.3 kgCOD/m3 (of media in MBR reactor). Each of organic loading rate experiment was varied with three hydraulic loading rates of 0.5, 1.0 and 2.0 m3/m2-h (considered only filter reactor). All experiments were operated and fed with real domestic wastewater from Patumwan Condominium Place. Two reactors of the process had the same size and w ere controlled by Programmable Logic Controller (PLC). The cycle time of system was 4 hr, but the actual operation time was 3 hr 50 mins, the last 10 minutes was for switching reactors. The two litres of excess sludge was removed from the MBR reactor during the second hours of the cycle operation. The media was made of PVC and hollow cylindrica l shape, it has inner diameter and outer diameter of 3.9 and 7 mm., respectively, and height of 3.5 mm. For the organic loading rate 6.7 kgCOD/m3 (of media in MBR reactor), the results shown that the effluent BOD values of the experiments with the hydraulic loading rate of 0.5, 1.0 and 2.0 m3/m2-h were 19, 18 and 9 mg/l ss values were 10, 7 and 3 mg/l and TKN values were 4.0, 2.4 and 1.3 mg/l, respectively. These results were in compliance with the standard of domestic wastewater effluent. For the organic loading rate 13.3 kgCOD/m3(of media in MBR reactor), the effluent BOD values were 80, 48 and 5 1 mg/l, SS values were 40, 20 and 29 mg/l and TKN values were 13.4, 21.9 and 20.8 mg/l for the hydraulic loading rate of 0.5, 1.0 and 2.0 m3/m2-h, respectively. These results were also in incompliant with the standard of domestic wastewater effluent.
SUBJECT
วิศวกรรมชลศาสตร์
ขยะและการกำจัดขยะ
สารประกอบอินทรีย์
น้ำเสีย -- การบำบัด -- กระบวนการแบบตะกอนเร่ง
Hydraulic engineering
Waste disposal
Organic compounds
Sewage -- Purification -- Activated sludge process