| Treatment of compost leachate by the combination of coagulation and membrane process☆ |
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| 作者姓名： | Zengnian Shu Yaoping L&# Jian Huang Wenhui Zhang |
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| 作者单位： | 1.College of Ecology, Lishui University, Lishui 323000, China;2.Institutes of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;3.Institute of Engineering and Design, Lishui University, Lishui 323000, China |
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| 基金项目： | Supported by the Natural Science Foundation of Zhejiang Province (LQ14B060001, Y14F030005), Foundation of Science and Technology Department of Zhejiang Province of China (2013C33019, 2015C33232), Science and Technology Project of Lishui City (2015RC23). |
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| 摘 要： | This study describes the treatment of composting leachate by the combination of coagulation and nanofiltration process.Poly ferric sulfate(PSF) was used as coagulant,and the effect of p H value and PSF dosage on the coagulation performance was investigated.The results indicated that the chemical oxidation demand(COD)and turbidity removal efficiency could reach to 62.8% and 75.3%,respectively at an optimum dosage of1200 mg·L~(-1)at p H 6.0.During the nanofiltration process,the operation conditions such as temperature and pressure were optimized,89.7% of COD,78.2% of TOC,72.5% of TN,83.2% of TP,and 78.6% of NH3-N were retained when tested at 0.6 MPa at 25 °C.The final leachate effluent concentration of COD,BOD5,NH3-N,TOC,SS was92 mg·L~(-1),31 mg·L~(-1),21 mg·L~(-1),73 mg·L~(-1)and 23 mg·L~(-1),respectively,which reached the local discharge standard.The combination of coagulation-filtration is useful for composting leachate treatment.
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| 关 键 词： | Compost leachate PFS coagulation Nanofiltration |
| 收稿时间： | 2015-11-04 |
Treatment of compost leachate by the combination of coagulation and membrane process |
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| Zengnian Shu,Yaoping L&#,Jian Huang,Wenhui Zhang.Treatment of compost leachate by the combination of coagulation and membrane process[J].Chinese Journal of Chemical Engineering,2016,24(10):1369-1374. |
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| Authors: | Zengnian Shu Yaoping L Jian Huang Wenhui Zhang |
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| Affiliation: | 1.College of Ecology, Lishui University, Lishui 323000, China;2.Institutes of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;3.Institute of Engineering and Design, Lishui University, Lishui 323000, China |
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| Abstract: | This study describes the treatment of composting leachate by the combination of coagulation and nanofiltration process. Poly ferric sulfate (PSF) was used as coagulant, and the effect of pH value and PSF dosage on the coagulation performance was investigated. The results indicated that the chemical oxidation demand (COD) and turbidity removal efficiency could reach to 62.8% and 75.3%, respectively at an optimum dosage of 1200 mg·L-1 at pH 6.0. During the nanofiltration process, the operation conditions such as temperature and pressure were optimized, 89.7% of COD, 78.2% of TOC, 72.5% of TN, 83.2% of TP, and 78.6% of NH3-Nwere retained when tested at 0.6 MPa at 25℃. The final leachate effluent concentration of COD, BOD5, NH3-N, TOC, SS was 92 mg·L-1, 31mg·L-1, 21mg·L-1, 73mg·L-1 and 23mg·L-1, respectively, which reached the local discharge standard. The combination of coagulation-filtration is useful for composting leachate treatment. |
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| Keywords: | Compost leachate PFS coagulation Nanofiltration |
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