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This article focuses on the role of several chemical phosphorus removal flocculant precipitate rear performance , as well as its effect in a different environment , the amount , through a series of experimental data obtained , the advantages and disadvantages of various flocculants , which can be based on water quality , and economic aspects to consider when choosing a suitable flocculant to make up for the lack of biological phosphorus removal , sewage , TP reached the national emission standards after biological treatment , and chemical rear precipitation . Coagulant and flocculant commonly used : calcium salts , iron salts and aluminum salts and polypropylene , the experimental amide as the research object , research on the biological treatment of municipal sewage effluent , rear precipitate phosphorus removal performance and profit phosphorus effect. Discussed through experiments on the basis of the basic nature of the understanding of the of these phosphorus removal reagents , the main factors affecting phosphorus removal were investigated to determine the best treatment effect optimization . This paper begins with a static point of research influent TP concentration , pH value , the reaction time, the drug dosage and other factors for the efficiency of phosphorus removal , while still continuity experiment investigated the FeC ? 3 regularity of dynamically phosphorus removal . The results showed that the calcium, aluminum and iron are in certain conditions with considerable efficiency of phosphorus removal , but only the iron salt in the processing condition closest to the nature of the raw water to be processed and therefore recommends the use of iron salts as treatment of municipal sewage commonly used flocculants.
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