Treatment of landfill leachate by combined aged-refuse bioreactor and electro-oxidation

The biodegradability of aged landfill leachate is low, and the treatment effects of common processes are very poor. This paper explored the effects of the Ultrasound/Ultraviolet - Aged Refuse Bioreactor combined process on aged landfill leachate. The main results were as follows: 1The optimum power of ultrasound was 100 W, and the optimum wavelength of ultraviolet was 254 nm. The removal rate of COD was 27.33% and the value of BOD/COD ratio was increased from 0.1 to 0.35 after the treatment of Ultrasound/Ultraviolet process. Therefore, the biodegradability of the leachate was improved, which might meet the demand of subsequent biological treatment. 2The COD removal rates of the two-stage series aged refuse bioreactor were both kept above 50% during the experiment and this process had a strong capacity of resistance to impact load. 3The COD removal rate of the combined process was over 80% as a whole without any pretreatment, and it has positive significance for the treatment of aged leachate.

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Use of aged refuse-based bioreactor/biofilter for landfill leachate treatment

Applied Microbiology and Biotechnology ◽

10.1007/s00253-014-5813-5 ◽

2014 ◽

Vol 98 (15) ◽

pp. 6543-6553 ◽

Cited By ~ 20

Author(s):

Muhammad Hassan ◽

Bing Xie

Keyword(s):

Landfill Leachate ◽

Leachate Treatment ◽

Aged Refuse

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Recovery of efficient treatment performance in a semi-aerobic aged refuse biofilter when treating landfill leachate: Washing action using domestic sewage

Chemosphere ◽

10.1016/j.chemosphere.2019.125618 ◽

2020 ◽

Vol 245 ◽

pp. 125618 ◽

Cited By ~ 1

Author(s):

Weiming Chen ◽

Fan Wang ◽

Zhepei Gu ◽

Qibin Li

Keyword(s):

Landfill Leachate ◽

Domestic Sewage ◽

Efficient Treatment ◽

Treatment Performance ◽

Aged Refuse

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An overview of electro-oxidation processes performance in stabilized landfill leachate treatment

Desalination and Water Treatment ◽

10.1080/19443994.2012.734698 ◽

2013 ◽

Vol 51 (10-12) ◽

pp. 2170-2184 ◽

Cited By ~ 35

Author(s):

Mohammed J.K. Bashir ◽

Hamidi Abdul Aziz ◽

Shuokr Qarani Aziz ◽

Salem S. Abu Amr

Keyword(s):

Landfill Leachate ◽

Leachate Treatment ◽

Oxidation Processes ◽

Electro Oxidation

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The Experimental Study on Landfill Leachate Treatment by Coagulation-Sedimentation + Electro-Oxidation Joint Reactor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.295-298.1472 ◽

2013 ◽

Vol 295-298 ◽

pp. 1472-1477

Author(s):

Tao Yu ◽

Tao Huang ◽

Yin Xi Pan ◽

Lin Hai Yang

Keyword(s):

Landfill Leachate ◽

Elimination Rate ◽

Ammonia Nitrogen ◽

Effluent Water ◽

Treatment Technology ◽

Leachate Treatment ◽

Electro Oxidation ◽

Electro Coagulation ◽

Oxidation Reactor ◽

Nitrogen Elimination

The technology used the coagulation-sedimentation + electro-oxidation joint reactor has been studied to treat landfill leachate. First adding FeCl30.4g/L into all leachate for coagulation and sedimentation, its CODcr elimination rate can achieve 35%, but does have no effect on ammonia nitrogen. Then using electro-oxidation reactor to deal with effluent water, the reaction order of electro-oxidation reactor is first-level, as the reaction conditions are 20mA/cm2 of electric current density, 140min of reaction time, the leachate CODcr elimination rate can reach to above 90%, the ammonia nitrogen elimination rate meets to 98% around. Using coagulation-sedimentation + electro coagulation joint reactor to treat landfill leachate can get stable effluent water quality with good treatment effect, has very high elimination efficiency of CODcr and ammonia nitrogen. It is a suitable treatment technology for landfill leachate.

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