废纸浆造纸废水处理工程实践

针对造纸废水中CODCr,SS等浓度较高的特征，以某年产5万t包装纸厂为例，采用水解酸化-CASS-气浮联合工艺处理某废纸纸浆造瓦楞纸项目废水，一年多的运行结果表明：整个废水处理系统的CODCr去除率大于97％，出水中CODCr，BOD5和SS质量浓度分别为60-80mg／L，10-20mg／L和60-80mg／L。整个废水系统投资和运行费用低，投资规模在0.05-0．06万元／（m^3·d），运行费用≤0．6元／m^3。

Engineering Practice of Wastewater Treatment in Corrugated Paper Production

High CODCr wastewater from the corrugated paper production by wastepaper pulp was treated by hydrolytic acidification -CASS-air flotation process. Over one year＇s operation indicated that the total COD removal rate of the system was more than 97%. The effluent concentration of CODCr, BOD5 and SS is 60-80 mg·L^-1,10-20 mg·L^-1 and 60-80 mg·L^-1 respectively. The wastewater treatment system was characterized by low investment and operation with the operational scale of （0.05-0.06）×10^4 yuan/m^3·d and the running cost less than 0.6 yuan/m^3.