Iran Occupational Health

Background and aims: In the present study, the performance of Semnan Industry Park’s MBR/RO advanced treatment system for industrial effluent reusing was investigated.

Methods: To determine the performance efficiency of full-scale membrane bioreactor (MBR) with submerged polyether sulfone flat sheet  modules (MA04-150, pore size of 0.05 &mum) into an aeration tank, the potential removal of nitrogen, phosphorous, BOD ,COD and TSS for industrial effluent reuse were investigated by seasonal sampling from MBR influent and effluent. 

Results: The results showed that the obtained removal efficiency of system for BOD, COD and TSS were more than 98 %, which increased in Summer. Furthermore, MBR reactor efficiency for the removal of nitrate, ammonia and TKN were 35%, more than 90% and 79% percent,  respectively. The MBR removal efficiency for phosphorus was determined by an average of 52% . Low efficiency is due to low levels of phosphorous in the reactor.

Conclusion : According to the results and to compare it with existing standards , it can be stated that the Semnan Industrial Park advanced treatment system meets its founding objectives and namely can be used agricultural and industrial operation.