%0 Journal Article
%T Research of ganglioside extraction wastewater treatment process<br>神经节苷脂生产废水处理技术研究
%A Cao Guomin
%A Liu Keshan
%A Sheng Mei
%A Ding Wei
%A <br>曹国民
%A 刘克山
%A 盛梅
%A 丁伟
%J 环境工程学报
%D 2007
%I 
%X Based on the characteristics of ganglioside extraction wastewater containing a lot of protein and high concentration COD,a sequential isoelectric point or coagulation precipitation,anaerobic-aerobic biological,chemical precipitation,and Fenton-like oxidation process has been developed to treat the wastewater in this study.The results showed that the isoelectric point of the wastewater was around pH=2.2 and the COD removal efficiency was over 30% after isoelectric point precipitation,but the protein settling velocity was very slow at isoelectric point.The optimal conditions as poly-ferric sulfate(PFS) used for the wastewater coagulation were pH=7~7.5 and PFS dose=500~750 mg/L,respectively.Under optimal coagulation conditions,the wastewater COD value was decreased from about 27 000 mg/L to about 13 000 mg/L through coagulation.The effluent of coagulation unit was treated by anaerobic(HRT=48 h) and aerobic(HRT=84 h) biological processes,and which COD value was decreased to about 600 mg/L after biological treatment.Since the PO3-4-P concentration in the biological system effluent was about 24 mg/L,2~3 mmol Fe3 /L was added to remove phosphate through precipitation and over dosed Fe3 could be worked as the catalyst of Fenton-like oxidation in the next step.The final effluent COD level could reach the Integrated Wastewater Discharge Standard of China as the H2O2(30%) dose was between 2 and 3 mL/L in the Fenton-like oxidation process.
%K ganglioside
%K protein
%K isoelectric point
%K coagulation
%K Fenton-like oxidation
%K biological treatment<br>神经节苷脂
%K 蛋白质
%K 等电点
%K 混凝
%K 类Fenton氧化
%K 生物处理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=E1DE5610D3B9733E66437DEE0DC25BC7&yid=A732AF04DDA03BB3&vid=CA4FD0336C81A37A&iid=DF92D298D3FF1E6E&sid=E514EE58E0E50ECF&eid=6AC2A205FBB0EF23&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=10