中国农业科技导报2018，Vol.20Issue(5)：132-139,8.DOI:10.13304/j.nykjdb.2017.0755
奶牛场高浓度污水的絮凝预处理效果研究
Influences of Flocculation on Wastewater with High Concentration Pollutants from Dairy Cattle Farm
摘要
Abstract
Since the wastewater from dairy farms contains high concentration of organics, wastewater must be treated to meet the requirements of related discharge standards. In order to reduce environment pollution caused by wastewater from dairy farms located at the suburb of Beijing, this paper designed a pretreatment experiment at bench-scale to optimize the operational parameters of chemical flocculation. Poly aluminum chloride (PAC) and 3 types of ionic polyacrylamide (PAM) were used as flocculants, and 2 flocculation trials were conducted and compared. The results showed that the effect of PAM was better than that of PAC and PAM combination.As for PAM adding, the ionic types of PAM took a role in the flocculation effects (P＜0.05). The best flocculation effect was observed in adding 2.5 mL NPAM at the dosage of 1 g/L. In such case, the concentrations of COD, NH+4-N and total phosphorus in supernatant were (12 892±2 354) mg/L, (462±53) mg/L and (31±3) mg/L, and the removal rates were 69.48％±4.10％, 13.11％±8.59％ and 85.05％±1.27％, respectively. Moreover, it cost only 0.05 yuan/m3. Therefore, it was feasible to pretreat the dairy farm wastewater with non-ionic polyacrylamide, thus easily reducing organics and suspending solid in the wastewater. This study provided a scientific basis for the application of flocculation on wastewater with high concentration pollutants from dairy cattle farm.关键词
奶牛场/污水/絮凝/聚合氯化铝/聚丙烯酰胺Key words
dairy farm/wastewater/flocculation/poly aluminum chloride/polyacrylamide分类
资源环境引用本文复制引用
杨培媛,尚斌,温富勇,赵海明,陶秀萍,董红敏,路永强,王俊..奶牛场高浓度污水的絮凝预处理效果研究[J].中国农业科技导报,2018,20(5):132-139,8.基金项目
北京市奶牛产业创新团队项目(BAIC06-2017) （BAIC06-2017）
中国农业科学院科技创新工程协同创新任务(CAAS-XTCX2016011-01) （CAAS-XTCX2016011-01）
北京市农业局科技项目资助. （）
