生化-物化法处理草浆中段水的工艺改进  

The process improvement of biological-chemical treatment of bleaching effluent from straw pulping

作　　者：焦伟堂[1] 李丽 

机构地区：[1]北京工商大学化学与环境工程学院,北京100037 [2]山东临清市银河纸业集团,山东临清252600

出　　处：《中华纸业》2005年第7期63-65,共3页China Pulp & Paper Industry

摘　　要：对原有草浆造纸中段废水处理工艺进行了改造,增加了一个污泥的吸附阶段,将气浮池的回流比改为35%,同时确定硫酸铝作为混凝剂,加药量控制在300～500mg/L的范围。从试验中发现,当气浮池的回流比由原来的21.3%改为35%时,悬浮物和色度的去除率分别提高了8%和9%,达到了较好的处理效果。通过以上改造,经运行后测定,出水达到了国家排放标准。The straw pulp bleaching effluent treatment technology was improved by adding a sludgy absorption stage, changing the circulating ratio in flotation tank to 35% and using aluminum sulfate as coagulant agent with the dosage of 300-500mg/L. The results show that when the circulating ratio in flotation tank was changed from 21.3% to 35%, the removal rate of suspended substances and degree of color was increased by 8% and 9% respectively, with a desirable treatment effect obtained. On the measurement, the effluent after treatment is accord with the state discharge standard with above mentioned improvement.

关 键 词：物化法处理 工艺改进 中段水 生化 废水处理工艺 国家排放标准 草浆造纸 处理效果 回流比 气浮池 混凝剂 硫酸铝 加药量 去除率 悬浮物 改造 吸附 污泥 出水 

分 类 号：TS749.2[轻工技术与工程—制浆造纸工程]