[1]周合喜,罗华瑞,李华伟,等.化工园区废水处理过程中溶解性有机物变化特征[J].中国给水排水,2022,38(23):80-87.
　ZHOUHe-xi,LUOHua-rui,LIHua-wei,et al.Variation Characteristics of Dissolved Organic Matter in Wastewater Treatment Process of Chemical Industrial Park[J].China Water & Wastewater,2022,38(23):80-87.
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化工园区废水处理过程中溶解性有机物变化特征

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第23期 页码: 80-87 栏目: 出版日期: 2022-12-01
Title:
Variation Characteristics of Dissolved Organic Matter in Wastewater Treatment Process of Chemical Industrial Park
作者:
周合喜1,2， 罗华瑞3， 李华伟4， 卫少华3， 安娜1， 肖维贵1， 刘礼祥3， 钱东5， 张金松1
（1.深圳市水务<集团>有限公司，广东 深圳 518000；2.清华大学 环境学院，北京 100084；3.深圳市环水投资集团有限公司，广东 深圳 518000；4.如东县洋口镇人民政府，江苏 南通 226407；5.如东深水环境科技有限公司，江苏 南通 226407）
Author(s):
ZHOU　He-xi1，2， LUO　Hua-rui3， LI　Hua-wei4， WEI　Shao-hua3， AN　Na1， XIAO　Wei-gui1，LIU　Li-xiang3， QIAN　Dong5， ZHANG　Jin-song1
（1. Shenzhen Water Group Co. Ltd.， Shenzhen 518000， China； 2. School of Environment， Tsinghua University， Beijing 100084， China； 3. Shenzhen Water and Environment Investment Group Co. Ltd.， Shenzhen 518000， China； 4. Rudong Yangkou Town People’ Government， Nantong 226407， China； 5. Rudong Shenshui Environmental Technology Co. Ltd.， Nantong 226407， China）
关键词:
溶解性有机物;  化工园区废水;  亲疏水性;  分子质量分布;  光谱解析
Keywords:
dissolved organic matter;  chemical industrial park wastewater;  hydrophilicity/hydrophobicity;  molecular weight distribution;  spectrum analysis
摘要:
溶解性有机物（DOM）的去除情况是化工园区废水达标排放的关键，因此深入解析废水中DOM的特性是对其高效去除的前提。以江苏省沿海某化工园区综合废水处理厂为研究对象，通过亲疏水性测定、凝胶色谱分子质量分级、紫外可见光谱、三维荧光光谱和红外光谱，系统解析了沿程不同处理单元DOM的变化特征。结果表明，全流程处理工艺对DOC、COD和UV254的去除率分别为78.6%、81.1%和93.7%，出水水质满足江苏省《化学工业水污染物排放标准》（DB 32/939—2020）。废水中DOM以亲水性物质为主，且随着沿程处理单元亲水性增强。废水中DOM的分子质量主要分布在1 000~3 000 u，经水解酸化池、中间水池、高效澄清池、臭氧催化氧化池和活性炭罐处理后，对DOM的去除率达到89.8%，紫外可见吸收光谱明显减弱。通过平行因子分析模型解析出5种荧光组分，包括2种腐殖酸类物质和3种蛋白质类物质，其中组分3的荧光强度最大，生化处理和活性炭吸附是其主要去除途径。红外光谱结果表明，废水的成分复杂，但末端活性炭罐对烷烃、芳香族、酚类、酯类、羧酸类甚至卤代烃类化合物均有较好的吸附效果。
Abstract:
The removal of dissolved organic matter (DOM) is the key to reach the wastewater discharge standard in chemical industry parks. Therefore, in-depth analysis of the characteristics of DOM in wastewater is the premise of its efficient removal. The DOM variation characteristics of different treatment units along the process of a comprehensive wastewater treatment plant in a coastal chemical industry park in Jiangsu Province were systematically analyzed through hydrophilicity/hydrophobicity determination, gel chromatography molecular weight classification, UV-visible spectrum, three-dimensional fluorescence spectrum and infrared spectrum. The removal rates of DOC, COD and UV254 of the whole process were 78.6%, 81.1% and 93.7%, respectively, and the effluent quality met the local standard of Jiangsu Province: Discharge Standard of Water Pollutants for Chemical Industry (DB 32/939-2020). The DOM in wastewater was mainly hydrophilic substances, and the hydrophilicity increased along the treatment units. The molecular weight of DOM in wastewater was mainly distributed in the range of 1 000-3 000 u. After the treatment of hydrolytic acidification tank, intermediate tank, high efficiency clarifier, ozone catalytic oxidation tank and activated carbon filter, the removal rate of DOM reached 89.8%, and the UV-visible absorption spectrum was significantly weakened. Five fluorescence components, including two humic acids and three protein substances, were analyzed by parallel factor analysis model. The fluorescence intensity of component 3 was the highest, and biochemical treatment and activated carbon adsorption were the main removal pathways. The infrared spectrum results showed that the composition of wastewater was complex. However, the terminal activated carbon filter had a good performance for the adsorption of alkanes, aromatics, phenols, esters, carboxylic acids and even halogenated hydrocarbons.

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更新日期/Last Update: 2022-12-01