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第 4卷第 4期环境工程学报 Vol. 4 , No. 4
2 0 1 0 年 4 月 Chinese Journal of Environmental Engineering Ap r . 2 0 1 0
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吹脱法预处理皮革废水的实验研究
姜维王小佳贾仁勇夏四清
(同济大学污染控制与资源化研究国家重点实验室,上海 200092)
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摘要对某皮革厂综合废水进行吹脱预处理实验,综合考察了影响氨氮去除的各个因素(pH值、汽液比、吹脱温度、
氨氮初始浓度) ,同时对该预处理工艺去除铬、SS(悬浮固体浓度) 、COD和硫化物的条件进行了优化,并进行了能耗及运行
成本估算。结果表明:该厂皮革废水的最佳吹脱工况为 pH = 11,气液比= 1 800,温度2 25 ~35 ℃,在此条件下,当进水
ρ、ρ、ρ、ρ、ρ 2 - 时相应的去除率可
(NH3 N) = 304 7 mg/L (Cr) = 65 0 mg/L (SS) = 1 700 mg/L (CO3D) = 2 700 mg2/L (S ) = 112 3 mg/L ,
达 78 1% ~83 5%、96 4%、88 2%、45 6%和 85 0% ,且吹脱法对氨氮具有较高的抗冲击负荷能力,吨水处理成本约为
3 61元,可作为皮革废水的预处理工艺。
关键词吹脱皮革废水氨氮铬硫化物
中图分类号 X703 1 文献标识码 A 文章编号 1673 9108 (2010) 04 0789 06
Exper im en ta l study on pretrea tm en t of tannery wa stewa ter by a ir str ipp ing
J iangW ei W ang Xiaojia J ia Renyong Xia Siqing
( State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China)
Abstract A ir stripp ing was used to p re bined tannery wastewater. In order to get the highest re
moval efficiency of ammonia nitrogen, the influence of the pH value of wastewater, the ratios of air to liquid, the
temperature and the initial concentration of ammonia nitrogen were investigated respectively. And the conditions
for the removal of Cr, SS, COD and sulfide were also op tim ized. The result