The effect of reaction time, concentration of bactericides (isothiazolone and 1227) , corrosion and scale inhibitor (ATMP) on the efficiency of intermittent activated sludge treatment system was investigated by a batch activated sludge reactor. Results showed that the existence of such water treatment agents in simulated wastewater could decrease the COD removal rate, NH3-N removal rate and oxygen consumption rate of the system, as well as inhibit the growth of heterotrophic bacteria. On the whole, the influence of residual water treatment agents on the biochemical treating effect of intermittent activated sludge treatment system was related with the types of chemical agent, its concentration and reaction time.%选用间歇式活性污泥反应器,考察不同浓度的杀菌剂、缓蚀阻垢剂在不同反应时间下对活性污泥处理系统处理效果的影响.结果表明,杀菌剂异噻唑啉酮和十二烷基二甲基苄基氯化铵(1227)、缓蚀阻垢剂氨基三亚甲基膦酸(ATMP)均会降低间歇式活性污泥系统的COD去除率、氨氮去除率和耗氧速率,对活性污泥中异养菌具有抑制作用.水处理剂对间歇式活性污泥系统处理效果的影响与水处理剂种类、浓度及反应时间有关.
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