单一基质快滤系统处理生活污水的研究

结合城市污水处理及快滤系统基质研究现状，通过试验室建立模拟土柱，对各单一基质材料处理污水效果进行试验研究。结果表明：陶粒、沸石、炉渣、蛭石、草炭这5种单一基质材料中，去除化学需氧量（ COD）的能力由强到弱依次为炉渣、蛭石、沸石、陶粒、草炭，去除氨氮的能力由强到弱依次为炉渣、蛭石、陶粒、沸石、草炭。对各种基质材料出水pH值进行监测，发现陶粒显碱性，草炭显酸性，且各基质材料出水的溶解氧浓度由高到低依次为炉渣、蛭石、草炭、沸石、陶粒。

Research on Treatment of Domestic Sewage by Single-material Fast Filter System

In combination with research status of urban sewage treatment and matrix of fast filter system, this paper conducts experimental research on the effect of sewage treatment with all single-material material by establishing simulating earth pillars in laboratory. The result shows that in five single-matrix materials of ceramsite, zeolite, slag, vermiculite and turf, the capability of removing chemical oxygen demand （ COD） from strong to weak is slag, vermiculite, zeolite, ceramsite and turf in turn, and the capability of removing ammonia nitrogen from strong to weak is slag, vermiculite, ceramsite, zeolite and turf in turn. The paper monitors water yielding pH values of various matrix materials and finds that ceramsite shows alkalinity and turf shows acidity, and dissolved oxygen concentration in yielding water of various matrix materials from high to low is slag, vermiculite, turf, zeolite and ceramsite in turn.