Prevention and Control Technology for Surrounding Water Environment Pollution during Construction
This paper aims to explore the prevention and control technology of water pollution in the surrounding area during the con-struction period,and achieve efficient prevention and control effects.After selecting representative tunnel samples,it designs a mixing water tank and a micro cyclone coagulation reactor for wastewater flocculation experiments.Using 7 different coagulants,the research ana-lyzes formation time of alum flowers,and measures NH3-N,SS,CODcr,and petroleum products separately from some of the superna-tant.The experimental results showed that the formation time of alum flowers in polymeric aluminum cationic organic polymer flocculants was the shortest.The precipitation rate was the fastest,the COD measurement result was the lowest,which was 14.8 mg/L,and the NH3-N measurement result was the lowest of 1.3 mg/L.The SS determination results of polyaluminum chloride and polymeric ferric sulfate flocculants are relatively low.The lowest petroleumbased determination result for ferrous sulfate flocculant is 1.23 mg/L.These four co-agulants can be combined to achieve efficient and comprehensive treatment of construction wastewater.
construction periodprevention and control of water environmental pollutionCODpetroleummicro cyclone coagula-tion reactor
万方数据
维普
