城市餐饮污水处理

Treatment of Municipal Sewage

针对城市餐饮污水中悬浮物多、COD大的特点,国标GB11914-89重铬酸盐法来测定水样中的COD,以无机絮凝剂和有机絮凝剂相结合的方式处理污水。探讨了聚合硫酸铁、聚丙烯酸胺和pH对COD去除的影响。结果表明:采用无机絮凝剂和有机絮凝剂相结合的方式处理餐饮污水,降低COD含量90%以上,达到国家排放标准。

In view of the characteristics of suspended substance and large COD in municipal food wastewater, the GB GB11914-89 dichromate method was used to determine the COD in water samples, and the treatment of wastewater was conducted by combining inorganic flocculants with organic flocculants. The effects of polymeric ferric sulfate, polyacrylate and pH on the removal of COD were investigated. The results showed that the treatment of restaurant wastewater with inorganic flocculant and organic flocculant decreased the content of COD by more than 90 %, and reached the national emission standard.