%0 Journal Article
%T Sulfate removal from monosodium L-glutamate wastewater with flocculation and precipitation process<br>味精离交废水混凝沉淀除硫技术的研究
%A LI Jin-ye
%A ZHENG ping
%A WU Dong-lei
%A ZHOU Shang-xing
%A DING Ge-sheng
%A <br>李金页
%A 郑平
%A 吴东雷
%A 周尚兴
%A 丁革胜
%J 浙江大学学报(农业与生命科学版)
%D 2005
%I Zhejiang University Press
%X The sulfate in the ion-exchange wastewater from monosodium L-glutamate production was removed with flocculation and precipitation process.The orthogonal experiment showed that the optimum levels of influence factors were as follows: original concentration(SO_4~(2-) 35.526 g/L),pH 3.2,Ca~(2+)/SO~(2-) ratio of 1.5,addition of neither poly aluminium chloride nor polyacrylamide.The contribution of influence factors to sulfate removal was,in decreasing order,wastewater concentration,Ca~(2+) dosage,pH,dosing sequence and coagulant dosage.On the condition that the Ca~(2+) dosage was equal to the SO_4~(2-) amount in the original wastewater,the sulfate removal efficiency was above 90% and the supernatant was clean after reaction for 15 min.The water content of the CaSO_4 sediment was about(81.4%) after being settled for 24 h.It is highly recommended to remove the sulfate from the wastewater at its original concentration rather than using the diluted wastewater,because the sulfate removal efficiency was lower,the supernatant was turbid and the water content of the CaSO_4 sediment was higher if the diluted wastewater was used.
%K calcium sulfate
%K flocculation and precipitation
%K monosodium glutamate wastewater
%K orthogonal experiment<br>味精离交废水
%K 混凝沉淀
%K 硫酸钙
%K 正交试验
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=298920A27C9BAA22346FCA384240FAA4&jid=466C05D88593309B3EB5CF34361E6426&aid=5EC2E1C743BF45CC&yid=2DD7160C83D0ACED&vid=4AD960B5AD2D111A&iid=B31275AF3241DB2D&sid=8D71AF42ACD39979&eid=231F9A307C169827&journal_id=1008-9209&journal_name=浙江大学学报(农业与生命科学版)&referenced_num=0&reference_num=6