Research on treatment of landfill leachates by flocculation-adsorption

ZHANG Futao; FANG Shaoming; SONG Quanyuan

doi:10.13374/j.issn1001-053x.2005.01.006

Volume 27 Issue 1

Aug. 2021

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ZHANG Futao, FANG Shaoming, SONG Quanyuan. Research on treatment of landfill leachates by flocculation-adsorption[J]. Chinese Journal of Engineering, 2005, 27(1): 21-23,113. doi: 10.13374/j.issn1001-053x.2005.01.006

Citation:

ZHANG Futao, FANG Shaoming, SONG Quanyuan. Research on treatment of landfill leachates by flocculation-adsorption[J]. Chinese Journal of Engineering, 2005, 27(1): 21-23,113. doi: 10.13374/j.issn1001-053x.2005.01.006

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Research on treatment of landfill leachates by flocculation-adsorption

doi: 10.13374/j.issn1001-053x.2005.01.006

1. Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
2. College of Materials and Metallurgy, Northeastern University, Shenyang 110004, China;
3. Department of Chemical Engineering, Zhengzhou Institute of Light Industry, Zhengzhou 450002, China

Received Date: 2003-12-23
Rev Recd Date: 2004-03-20

Available Online: 2021-08-17

Abstract

Abstract

Landfill leachate, whose main pollutants are organic matter, heavy metals and ammoniacal nitrogen, is a kind of poisonous, harmful and organic wastewater. The pretreatment of landfill leachate by flocculation-adsorption was investigated. Polyaluminium chloride (PAC) was used as the flocculant and its optimum dosage was 500 mg/L. The adsorbent was self-made modified bentonite. Experimental results showed that approximately 79% of COD_cr and 46% of ammoniacal nitrogen were removed. As to heavy metals, the removal ratios were from 53% to 98% according to different kinds of landfill leachate.
- leachate,
- pretreatment,
- polyaluminium chloride,
- modified bentonite