Several questions about ABR
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Our company specializes in original enzymes. The COD level in the wastewater is 5,000, ammonia nitrogen is 500, and total phosphorus is around 550. Recently, the treatment efficiency of the ABR system was only 30%. We found that the processing efficiency was too low, so we added another 100 T of sludge on top of what was already there (the effective volume of the ABR is 650 cubic meters). The water enters the ABR after passing through a primary sedimentation tank and undergoing pH adjustment; its COD level is around 3000. There is influent water, backflow from within the ABR, and sludge backflow from the secondary sedimentation tank. However, during debugging during this period, it was found that the processing efficiency had not improved. What is the problem? Help needed~~~~
Check the pH level inside the anaerobic reactor to determine whether poor treatment performance is caused by a low pH value.
The return flow from the secondary sedimentation tank should be as low as possible; otherwise, the oxygen carried in by this flow will affect the anaerobic process, and it will also increase the flow rate and thereby reduce the contact time between sludge and water.