Characteristic of Dissolved Organic Matter Removal in Overflow Wastewater by Coagulation Flocculation Process

doi:10.3969/j.issn.0253-374x.2012.12.017

Home > Archive>Volume 40, Issue 12, 2012 >1842-1846. DOI:10.3969/j.issn.0253-374x.2012.12.017

Characteristic of Dissolved Organic Matter Removal in Overflow Wastewater by Coagulation Flocculation Process
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                        10.3969/j.issn.0253-374x.2012.12.017
                    
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                        XU ZuxinXU Zuxin
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
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WANG WeigangWANG Weigang
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
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LI HuaizhengLI Huaizheng
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
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JIN WeiJIN Wei
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
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Abstract:

The fractions variation and the removal efficiency of dissolved organic matter (DOM) by polyaluminum ferric chloride sulfate (PAFCS) in coagulation flocculation process were investigated by taking a storm sewer system in Shanghai for example. The results show that in overflow wastewater, hydrophobic matter (HoM) and hydrophilic matter (HiM) account for 68% and 32% respectively; and molecular weight (MW) more than 300 kDa and 10～50 kDa fractions account for 29.76% and 37.87% respectively. PAFCS is effective on DOM removal and total organic carbon (TOC) removal efficiency is 17% approximately, and the removal efficiency of HoM fraction is higher than HiM fraction. The removal efficiency of MW more than 300 kDa and 100～300 kDa is between 20% and 25% approximately, but the MW less than 10 kDa and 50～100 kDa fractions are rarely removed in coagulation flocculation process.

Key words:overflow wastewater; dissolved organic matter; fractions; coagulation flocculation process

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XU Zuxin, WANG Weigang, LI Huaizheng, JIN Wei. Characteristic of Dissolved Organic Matter Removal in Overflow Wastewater by Coagulation Flocculation Process[J].同济大学学报(自然科学版),2012,40(12):1842~1846

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Received:October 21,2011
Revised:September 28,2012
Adopted:December 28,2011
Online: January 02,2013
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