摘要
用鼓风炉铁泥作原料,制备了一种无机高分子混凝剂聚硅酸铁(PSF),并将其用于制革废水的处理.结果表明:PSF混凝剂与聚硅酸铝(PSA)混凝剂配合使用,在常温,pH7.5,PSF混凝剂的用量为75,mg/L条件下,SS、色度及CODCr的去除率分别为92.3%、89.5%、82.8%;温度对CODCr去除率的影响很小;与传统混凝剂PAC(聚合氯化铝)和PFS(聚合硫酸铁)相比,PSF混凝剂具有混凝沉降速度快,污泥体积小等特点.
A new type of inorganic polymer coagulant polysilicate ferric （ PSF ） prepared from blast furnace sludge as raw materials was used as coagulant in the treatment of tanning wastewater. The experimental results show that the removal rate of SS, chromaticity and CODc~ is able to reach 92,3%, 89.5% and 82.8% respectively under such conditions as room temperature, pH = 7.5 and dosage of the coagulant 75mg/L, combined with polysilicate aluminium （ PSA ） flocculant. The temperature has little impact on the removal rate of CODCr. In comparison with the conventional coagulants, such as PAC （ polyaluminium chloride ） and PFS （ polyferric sulfate ） , the coagulation performance of PSF is the best. The remarkable characteristics of this method are higher settlement rate and smaller sludge volume.
出处
《天津科技大学学报》
CAS
2008年第2期6-9,共4页
Journal of Tianjin University of Science & Technology
基金
黑龙江省教育厅科学技术研究项目(10551339)
关键词
鼓风炉铁泥
PSF混凝剂
制革废水
废水处理
blast furnace sludge
polysilicate ferric coagulant
tanning wastewater
wastewater treatment
