In response to the risk of exceeding certain effluent indicators and high energy consumption during process operation caused by water quality shock in a sewage treatment plant near an industrial park in Fuzhou,the process operation was optimized by simulating the treatment effect of a pilot plant under different water quality and operating conditions.The results showed that by controlling the HRT of the biochemical system for 17 hours,MLSS was maintained at 3 000～4 000 mg/L,DO was maintained at 1.78～2.12 mg/L,and the dosage of the new phosphorus removal agent was 2.3 mg/L,the main pollutants in the effluent water quality could be stabilized to meet the first-class A standard.
water quality shockpilot plantprocess operationstable compliance
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