NDLI: Treatment of Tanning Wastewater with Flyash-Based Coagulant

Content Provider	IEEE Xplore Digital Library
Author	Zhihui Sui Xin Zhao Xihuai Qiang
Copyright Year	2010
Abstract	PBS (flyash-based coagulant) made by fly ash in coal-fired thermal power plants and blast furnace iron sludge extracted with a dilute H2SO4 was used as coagulant in the treatment of tanning wastewater. The influence of pH value, coagulant dosage and temperature on coagulation effect was investigated. The results showed that this coagulant had satisfactory results to treat tanning wastewater under the pH value ranging from 6 to 9, combined with polysilicate aluminium(PSA) flocculant. The removal rate of SS, S2-, Cr3+, CODCr and colority in tanning wastewater was 93.1%, 92.8%, 87.6%, 83.3％ and 90.8％ respectively in the condition where temperature was normal, pH value was 7.0 and coagulant dosage was 70mg/L. The temperature had little impact on the removal rate of CODcr. In comparison with the conventional coagulants, such as PAC (polyaluminium chloride) and PFS (polyferric sulfate), the coagulation performance of PBS coagulant was obviously superior to conventional coagulants. The coagulation mechanism of PBS coagulant in the treatment of tanning wastewater was also discussed．
Starting Page	1
Ending Page	4
File Size	228723
Page Count	4
File Format	PDF
ISBN	9781424447121
ISSN	21517622
DOI	10.1109/ICBBE.2010.5518312
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fly ash Temperature Coagulation Blast furnaces Iron Raw materials Wastewater treatment Sludge treatment Chemicals Power generation
Content Type	Text
Resource Type	Article

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