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首页> 外文期刊>Journal of Residuals Science & Technology >Optimized Coagulation on a Municipal Wastewater Treatment: Competitive and Synergetic Effect Among Different Pollutants
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Optimized Coagulation on a Municipal Wastewater Treatment: Competitive and Synergetic Effect Among Different Pollutants

机译：优化混凝处理城市污水：不同污染物之间的竞争和协同效应

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Iron(II) shows an increasingly attractive option among the main metal salts available for phosphorous removal by chemical precipitation. But other anions in the changing wastewater may compete with phosphorous for iron(II) also. Meanwhile, in the absence of oxygen, the iron(II) will not be oxidized and produce a very fine precipitate with phosphorous which is difficult to settle down easily. A case study towards an optimized coagulation system in a municipal WWT plant was therefore carried out to illustrate the competitive and synergetic effect during iron(II) coagulation. The results showed that FeSO4 can effectively reduce the dissolved total phosphorus (DTP) and sulfide (S2?), but total phosphorus (TP) is not reduced. Alum and polyaluminum chloride (PACl) could act as the coagulant aid to develop an effective coagulation process with the emphasis of phosphorus removal from wastewater.
机译：铁（II）在可用于通过化学沉淀去除磷的主要金属盐中显示出越来越有吸引力的选择。但是不断变化的废水中的其他阴离子也可能与磷竞争铁（II）。同时，在没有氧气的情况下，铁（II）将不会被氧化，并且会产生非常细的含磷沉淀物，难以沉淀下来。因此，对市政污水处理厂的优化混凝系统进行了案例研究，以说明铁（II）混凝过程中的竞争和协同效应。结果表明，FeSO4可以有效地减少溶解的总磷（DTP）和硫化物（S2？），但总磷（TP）却没有减少。明矾和聚氯化铝（PACl）可以作为助凝剂，以发展有效的凝结工艺，并着重从废水中去除磷。

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