海水冲厕是解决沿海城市用水紧张的一个可选方法。作者利用SBR反应器处理含海水的城市污水,为海水冲厕技术的推广应用提供了技术依据。试验中SBR反应器运行条件:MLSS为2100mg/L,COD容积负荷为0.3～1.0kg/(m·3d),厌氧段DO为0.2mg/L,好氧段DO为2.0～3.0mg/L,运行周期为12h,试验用含海水城市污水含盐质量浓度<10500mg/L。结果表明:COD去除率在87%以上,NH4+-N和TP的去除率均在68%以上;同时随进水含盐质量浓度的增加出水中SS将减小,污泥沉降性能也逐渐增强,SBR反应器运行良好。

SBR reactor is used to treat municipal sewage containing seawater. The effect of seawater salinity on the various treating efficiency of the biological reactor has been studied, giving technical support to seawater treatment after toilet-flushing. The results show that when the seawater concentration is below 30%, the SBR process works well. In SBR reactor, MLSS is 2 100 mg/L, COD volumet ric load is 0.3 ～ 1.0 kg/(m^{3<\sup>·d), at the anaerobic phase DO is 0.2 mg/L; at the aerobic phase DO is 2.0 ～ 3.0 mg/L, the reacting period is 8 ～ 12 h, the COD removal rate is above 87%, the NH4+ - N and TP removal rate is above 68%. At the same time, the effluent water SS reduces, as the salinity is getting higher, an d the sludge degradation is getting stronger gradually, too.}