Treatment of compost leachate by the combination of coagulation and membrane process

Zengnian Shu; Yaoping Lü; Jian Huang; Wenhui Zhang

doi:10.1016/j.cjche.2016.05.022

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Treatment of compost leachate by the combination of coagulation and membrane process

Separation Science and Engineering | Updated：2026-01-06

- Treatment of compost leachate by the combination of coagulation and membrane process
- Chinese Journal of Chemical Engineering Vol. 24, Issue 10, Pages: 1369-1374(2016)
- Affiliations：
  
  1. College of Ecology, Lishui University,Lishui,China,323000
  2. Institutes of Urban Environment, Chinese Academy of Sciences,Xiamen,China,361021
  3. Institute of Engineering and Design, Lishui University,Lishui,China,323000
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.05.022
  CLC：
- Published：2016
- Accepted：
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Zengnian Shu, Yaoping Lü, Jian Huang, Wenhui Zhang. Treatment of compost leachate by the combination of coagulation and membrane process[J]. , 2016, 24(10): 1369-1374.
DOI：

Zengnian Shu, Yaoping Lü, Jian Huang, Wenhui Zhang. Treatment of compost leachate by the combination of coagulation and membrane process[J]. , 2016, 24(10): 1369-1374. DOI： 10.1016/j.cjche.2016.05.022.

摘要

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 NH

-Nwere retained when tested at 0.6 MPa at 25℃. The final leachate effluent concentration of COD

BOD

-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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