小排量皮革涂饰废水处理工艺与系统设计

Treatment Process and Systemic Design of Small Drainage Leather Finishing Wastewater

提出了小排量皮革涂饰废水之“两级混凝＋过滤”处理工艺，并对处理系统进行了初步设计。当进水CODcr4000～5000m∥L，色度1200～1500，pH=10～12时，处理后出水CODcr为400～600mg／L，色度70以下，pH=8～9，接近《污水综合排放标准》（GB8978—1996）中的二级标准，可进入城市污水处理系统作进一步处理。

The treatment process of ＂two stage coagulation ＋ filter＂ to treat small drainage leather finishing wastewater was proposed and a preliminary design for the treatment system was introduced. It shows that the wastewater with CODcr 4 000 - 5 000mg/L, color 1 200 - 1 500 and pH 10 - 12 initially after treatment could be purified to near stage I1 standard of integrated wastewater discharge standard （ GB8978 - 1996） and could come to the urban wastewater treatment system for further treatment , in which CODcr is 400 -600mg/L, the color is below 70, pH is 8 -9.