混凝过程中EfOM有机组分的变化及对消毒副产物生成势的影响  

Changes in Organic Components of EfOM During Coagulation and the Effect on the Formation of Disinfection Byproducts

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作  者:蒋秋分 王君成 岳雯 宋吉娜 JIANG Qiufen;WANG Juncheng;YUE Wen;SONG Jina(College of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,China)

机构地区:[1]河北工程大学能源与环境工程学院,河北邯郸056038

出  处:《水处理技术》2023年第8期51-54,65,共5页Technology of Water Treatment

基  金:国家自然科学基金项目(51908177);河北省高等学校科学技术研究项目(ZD2021022);河北省自然科学基金项目(E2021402015)。

摘  要:研究了混凝对污水处理厂二级出水溶解性有机物(EfOM)的去除效果及有机组分的变化以及对三卤甲烷生成势(THMFP)和卤乙酸生成势(HAAFP)的影响。结果表明,弱酸性条件下混凝对EfOM的去除效果略优于中性条件。络合反应更能去除THMs前驱物,而网扫絮凝对HAAs前驱物的去除效果更好。结合原水和混凝水的三维荧光光谱和傅里叶红外光谱可知,COOH、芳香族的有机物和溶解性微生物副产物有较高的反应活性,易和氯反应生成THMs,而多糖、脂肪族和腐殖酸类物质具有较高生成HAAs的潜能。The effects of coagulation on the removal efficiency of effluent organic matter(EfOM)from wastewater treatment plants were investigated to identify changes in their organic components and the influences on trihalomethane formation potential(THMFP)and haloacetic acid formation potential(HAAFP).The results indicated that the removal efficiency was higher under acidic than that under neutral conditions.The complexation reaction could remove more trihalomethanes(THMs)precursor,and the sweep coagulation had a better effect on the removal of HAAs precursor.The results of excitation-emission matrix spectra and fourier transform infrared spectroscopy of the raw and coagulated water indicated that COOH,aromatic structures,and soluble microbial byproduct-like substances had a higher reactivity to form THMs when reacting with chlorine.Polysaccharides and aliphatic structures were associated with a higher production of HAAs.

关 键 词:二级出水有机物 混凝 消毒副产物 有机物组分 

分 类 号:X703.1[环境科学与工程—环境工程]

 

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