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The Composite Coagulant Treatment of Printing and Dyeing Wastewater
Li Changbo, Xue Dong, Jiang Husheng, Zhang Honglin, Liu Dengchao
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518
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Polyaluminium chloride (PAC) and PANDCD compound with coagulant was used to coagulate solute colloid or suspended particles in dye wastewater from a coloured socks factory. The influence of pH, coagulant dosing quantity, coagulation settling time on the coagulant performance are investigated and the coagulant performance was evaluated by the removal rate of COD and chroma. The results indicate that: compound coagulant in the treatment effect is better than single coagulant|the best operating conditions for compound coagulant to treat the dye wastewater was: compound coagulant dosage 10 mg/L, coagulation settling time 25 minutes, pH=7. In this case, the removal rate of chroma was 97.7%, removal rate of COD was 67.2%.
2014, 34 (2): 1-3.
DOI:
10.3696/j.issn.1672-6952.2014.02.001
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Enzyme Water Quality Stabilizer for Oil Refineries Circulating Water Treatment
XUE Dong, LIU Dengchao, ZHANG Honglin, LI Changbo, JIANG Husheng
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337
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The article adopted a kind of biological treatment technology of the circulating cooling water treatment. To four of the same water sample with different content of an enzyme preparation, determine water COD and ammonianitrogen through the effect of enzyme and microorganism. The results show that: The water samples have enzyme preparation played a significant effect to the degradation of COD and ammonianitrogen compared to the water sample with no enzyme preparation, and with the improvement of enzyme preparation content, the effect of the degradation of COD and ammonianitrogen reveals more and more good, and treated water is neutral. When enzyme preparation of dosing quantity for water sample of thirtytwo over one thousand, the removal rate of COD as high as 89% and ammonianitrogen as high as 95%.
2013, 33 (3): 1-3.