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Flocculation Performance of Collagen-based Flocculant in Papermaking Wastewater
  
DOI：10.11980/j.issn.0254-508X.2011.12.007
Key Words:waste leather shavings  floculant  flocculation characteristic  paper-making wastewater
Fund Project:基金项目：教育部“新世纪优秀人才支持计划”(NCET-08-0367)；四川省青年基金(2010JQ0009)；四川省生物质改性材料工程技术研究中心课题（09zxbk04）。
Author NameAffiliation
吕思宁1 1.四川大学轻纺与食品学院,四川成都，610065 
迟原龙1 1.四川大学轻纺与食品学院,四川成都，610065 
刘一山1,3 1.四川大学轻纺与食品学院,四川成都，610065；2.四川工商职业技术学院，四川都江堰，611830 
曹明蓉1 1.四川大学轻纺与食品学院,四川成都，610065 
何　强1 1.四川大学轻纺与食品学院,四川成都，610065 
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Abstract:The collagen-based flocculant (CF) was prepared by using skin waste from tannery as raw material and used for the flocculation treatment of paper-making wastewater. The effects of amount of CF on the color removal rate, CODCr removal rate and TS removal rate were studied in different pH conditions, and the settling curve of the wastewater flocculated by CF was also investigated. The results indicated that CF exhibited a satisfactory flocculation effect on paper-making wastewater. The color removal rate, CODCr removal rate and TS removal rate of the wastewater flocculated by CF were 92.0%, 47.8% and 13.4%, respectively. And CF can lead to a fast settlement rate and produce a small volume of sludge, which is similar to the level of using polyaluminum chloride (PAC) as flocculant. The preparation and application of CF is significant considering to fully use biomass resource and environment protection.
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