Study on Advanced Treatment of Alkali Dyeing Wastewater by Continuous Process of Iron Carbon Micro-Electrolysis-UASB-SBR

Yong Hong Liu; Yi Bo Wang; Wei Fu; Li Cheng Chen; Yao Zhong Li; Li Na Wang

doi:10.4028/www.scientific.net/AMR.955-959.144

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 955-959Study on Advanced Treatment of Alkali Dyeing...

Study on Advanced Treatment of Alkali Dyeing Wastewater by Continuous Process of Iron Carbon Micro-Electrolysis-UASB-SBR

Abstract:

By use of iron-carbon micro-electrolysis-UASB-SBR continuous process, treatment of an actual alkali dyeing wastewater (pH 11.50~13.50) taken from a certain factory in Xian-Yang was studied. The results indicated that: (1) When the influent COD is 1000~1600 mg·L^-1, chroma 250 times, firstly effluent COD reduced to 400~800 mg·L^-1 and chroma 40 times by iron-carbon micro-electrolysis process, secondly effluent COD dropped to 250~500 mg·L^-1 by UASB process, finally effluent COD dropped to 70~98 mg·L^-1 by a SBR with loading PVA micro-gel beads, which meet the direct emission limits of water pollutants for dyeing and finishing of textile industry (GB 4287-2012); (2) Effective combination process of iron-carbon micro-electrolysis with UASB-SBR can be obtained through HRT optimization of micro-electrolysis reaction (HRT=10), that not only meet the requirement influent pH of anaerobic reactor, but also greatly reduce the cost of alkaline in practical application of iron carbon micro-electrolysis.

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Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

144-148

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.144

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Online since:

June 2014

Authors:

Yong Hong Liu*, Yi Bo Wang, Wei Fu, Li Cheng Chen, Yao Zhong Li, Li Na Wang

Keywords:

Chroma, COD, Dyeing Wastewater, Iron-Carbon, PVA Gel Beads, UASB-SBR

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