Conditions of Activated Sludge System with Sponge for Treating Concentrated Solid Waste Leachate
DOI: 10.14416/j.ind.tech.2020.07.004
Keywords:
Activated Sludge, Solid Waste Leachate, Hydraulic Retention, Hydraulic Loading RateAbstract
This research investigated the operation by using activated systems to accelerate the application together with the sponge to collect sludge to enhance the stimulation by microbes. In the experiment, using 2 reactors, 12 liters each, and put the sponge at the end of the water pipe to trap sediment. To study the conditions that affect the efficiency of the system such as the influence of the aeration, hydraulic retention time (HRT) and hydraulic loading rate (HLR). There are 3 conditions, with condition 1 having aeration of 35 liters/minute, state 2.70 liters/min, state 3.90 liters/min from the experiment, it was found that adding sponge can reduce SS (Suspended Solids) at the effluent tank can be removed more than 95% when experimenting at different conditions. It was found that when storing sediment for a long time, it was able to treat BOD, COD and NH3 more than 51%, 47% and 47% at HRT for 10 days and increased more than 3%. HRT 15 days, if doubling the aeration, can increase the treatment efficiency by more than 6% and 8% for HRT 10 and 15, respectively. DO averages are in the range of 4.8-5.5 mg/l and MLSS is in the range of 9,600-16,000 mg/l, which increases according to the aeration rate and tends to increase over time. This research is a practical application to promote both physical and biological efficiency.
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