Help: How to address high levels of ammonia nitrogen and total phosphorus after MBR membrane treatment in wastewater treatment plants?
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I would like to ask everyone: after the wastewater undergoes anaerobic, aerobic, and MBR membrane treatment, the ammonia nitrogen and total phosphorus levels in the treated water are found to be high. How can this issue be resolved?
Membrane filtration failed; turn to Luthol Filter for assistance
MBR is an ultrafiltration membrane, not an RO membrane. Do not mislead.
Is it a membrane issue or a manufacturing issue upstairs?
I was wondering if it’s a membrane issue or a process issue?
I was wondering if it’s a membrane issue or a process issue?
MBR is a biofilm reactor, where the membrane used is an ultrafiltration membrane that can only retain SS and colloids, but has no ability to retain ions. Ammonium nitrogen and total phosphorus are in ionic form, and reverse osmosis membranes are required to remove them. So it’s probably not a problem with the MBR membrane; it’s an issue with the process. There is only anaerobic conditions, no hypoxic conditions; even if ammonia is converted to nitrate nitrogen in the aerobic tank, total nitrogen is not removed. To remove ammonia nitrogen, it is necessary to create an anoxic tank; the return flow from the aerobic tank is directed into this anoxic tank, where ammonia and nitrate nitrogen undergo a disproportionation reaction to produce nitrogen gas, which can then be removed. For phosphorus, chemical phosphorus removal can only be achieved by adding chemicals to the aerobic effluent.
Excess levels of ammonia nitrogen and total phosphorus are likely due to biochemical issues; membranes are mainly used for removing suspended solids.
The biochemical treatment before membrane entry is not adequate