| Enhanced primary treatment of low-concentration municipal wastewater by means of bio-flocculant Pullulan |
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| 引用本文： | YANG Kai YANG Xiao-Jun YANG Mo. Enhanced primary treatment of low-concentration municipal wastewater by means of bio-flocculant Pullulan[J]. 浙江大学学报(A卷英文版), 2007, 8(5): 719-723. DOI: 10.1631/jzus.2007.A0719 |
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| 作者姓名： | YANG Kai YANG Xiao-Jun YANG Mo |
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| 作者单位： | YANG Kai1，YANG Xiao-Jun1，YANG Mo2 (1School of Civil Engineering，Wuhan University，Wuhan 430072，China) (2School of Municipal and Environmental Engineering，Harbin Institute of Technology，Harbin 150090，China) |
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| 基金项目： | Project (No. 2005AA601010) supported by the Hi-Tech Research and Development Program (863) of China |
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| 摘 要： | Jar tests were conducted to investigate the performance of enhanced primary treatment processes for low-concentra-tion municipal wastewater from South China by using composite flocculant combined with bio-flocculants Pullulan and poly-aluminum-chloride (PAC). The optimum dosage for composite flocculant and conditions for flocculation were determined. The experimental results indicated that composite flocculant had high efficiency for removing over 95% of turbidity, over 58% of CODCr (chemical oxygen demand determined with potassium dichromate), over 91% of TP (total phosphate), and over 15% of NH3-N. Moreover, it could improve sludge settling and dehydration properties, and decrease the treatment cost.
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| 关 键 词： | 低浓度城市污水 生物絮凝剂 普鲁兰多糖 污水处理 强化初级处理 |
| 收稿时间： | 2006-04-16 |
| 修稿时间： | 2006-07-31 |
Enhanced primary treatment of low-concentration municipal wastewater by means of bio-flocculant Pullulan |
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| Yang Kai,Yang Xiao-Jun,Yang Mo. Enhanced primary treatment of low-concentration municipal wastewater by means of bio-flocculant Pullulan[J]. Journal of Zhejiang University Science, 2007, 8(5): 719-723. DOI: 10.1631/jzus.2007.A0719 |
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| Authors: | Yang Kai Yang Xiao-Jun Yang Mo |
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| Affiliation: | (1) School of Civil Engineering, Wuhan University, Wuhan, 430072, China;(2) School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, China |
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| Abstract: | Jar tests were conducted to investigate the performance of enhanced primary treatment processes for low-concentra-tion municipal wastewater from South China by using composite flocculant combined with bio-flocculants Pullulan and poly-aluminum-chloride(PAC). The optimum dosage for composite flocculant and conditions for flocculation were determined. The experimental results indicated that composite flocculant had high efficiency for removing over 95% of turbidity,over 58% of CODCr(chemical oxygen demand determined with potassium dichromate),over 91% of TP(total phosphate),and over 15% of NH3-N. Moreover,it could improve sludge settling and dehydration properties,and decrease the treatment cost. |
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| Keywords: | Bio-flocculant Pullulan Enhanced primary treatment |
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