化学絮凝法处理温室龟鳖养殖废水工艺参数优化

发布时间：2018-06-02 13:37

本文选题：环境工程学 + 温室龟鳖养殖废水　；参考：《安全与环境学报》2017年02期

【摘要】：选择聚合氯化铝(PAC)、聚合硫酸铁(PFS)、聚合氯化铁(PFC)为絮凝剂,对比研究3种絮凝剂去除温室龟鳖养殖(greenhouse turtle aquaculture)废水悬浮物效果。结果表明,絮凝剂PAC的絮凝效果最佳。选择PAC为絮凝剂,阳离子聚丙烯酰胺(PAM)为助凝剂,通过响应面法以浊度去除率为响应值,PAC和PAM的投加量和搅拌时间为影响因素,对工艺关键参数进行优化,最终确定最佳工艺参数。根据响应面分析结果,确定龟鳖养殖废水的最佳絮凝条件为PAC质量浓度85.3 mg/L、PAM质量浓度19.8 mg/L、搅拌时间2 min。在此条件下浊度去除率为97.1%,为温室龟鳖养殖废水的优化絮凝处理提供了参考依据。
[Abstract]:Polyaluminium chloride (PAC), polyferric sulfate (PFS) and polyferric chloride (PFC) were used as flocculants to study the effects of three flocculants on the removal of suspended matter from greenhouse turtle aquaculture wastewater. The results showed that the flocculating effect of flocculant PAC was the best. Using PAC as flocculant and cationic polyacrylamide (PAM) as coagulant aid, the key parameters of the process were optimized by using the turbidity removal rate as the response value, the dosage of PAC and PAM and the stirring time as the influencing factors. Finally, the optimum process parameters are determined. According to the results of response surface analysis, the optimum flocculation conditions of turtle culture wastewater were determined as follows: the mass concentration of PAC was 85.3 mg / L, the mass concentration of PAM was 19.8 mg / L, and the stirring time was 2 min. Under these conditions, the turbidity removal rate is 97.1g, which provides a reference for the optimal flocculation treatment of turtle and turtle culture wastewater in greenhouse.
【作者单位】：浙江大学生物系统工程与食品科学学院农业部设施农业装备与信息化重点实验室;湖州市南浔区农业技术推广服务中心;浙江大学湖州市南太湖现代农业科技推广中心;
【基金】：苕溪流域农村污染治理技术集成与规模化工程示范项目(2014ZX07101-012) 浙江省设施水产养殖工程与装备产业重点科技创新团队项目(2011R50029) 湖州市级科技计划项目(2013GY07)
【分类号】：X714

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