涂装材料生产废水分质预处理模式及其工艺优化  

Classified Pretreatment Mode and Process Optimization for Coating Materials Production Wastewater Treatment

作　　者：黄霞 祝佳欣 林茹晶 胡静 汪一丰 庞维海[1] 谢丽[1] HUANG Xia;ZHU Jiaxin;LIN Rujing;HU Jing;WANG Yifeng;PANG Weihai;XIE Li(Key Laboratory of Yangtze River Water Environment,Ministry of Education,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;Shanghai Chemetall Chemicals Co.,Ltd.,Shanghai 201315,China;Shanghai Branch of Yixing Packard Environmental Protection Technology Co.,Ltd.,Shanghai 200126,China)

机构地区：[1]长江水环境教育部重点实验室,同济大学环境科学与工程学院,上海200092 [2]上海凯密特尔化学品有限公司,上海201315 [3]宜兴帕克德环保技术有限公司上海分公司,上海200126

出　　处：《净水技术》2022年第8期88-94,179,共8页Water Purification Technology

基　　金：国家自然科学基金(51978487)。

摘　　要：针对某涂装材料企业的生产废水污染物种类复杂、污染物浓度高、可生化性差的特点,对其处理模式与技术进行探究。根据废水的水质特点,将来源于不同工艺的含铬废水、重金属废水、高浓度COD废水和含油废水进行分质物化预处理。在处理技术方面,着重考察并分析了芬顿氧化以及次氯酸钙氧化法的处理效果。研究结果表明,混凝沉淀相较于芬顿氧化对于重金属的去除更显著。对比芬顿氧化,次氯酸钙氧化法在提高16.4%的COD去除率的基础上,降低了约59.4%的药剂成本,更具有经济价值。此外,本研究在小试试验的基础上进一步进行中试论证,结果表明,通过对各类废水的分质预处理可有效去除重金属离子并降低COD,降低了处理难度和经济成本,减轻了后续生化处理的负荷。The treatment mode and technology of the wastewater of a coating material enterprise were investigated in view of the characteristics of complex types, high concentrations of pollutants and poor biodegradability. According to the water quality characteristics of wastewater, chromium-containing wastewater, heavy metal wastewater, high concentration COD wastewater and oil-containing wastewater from different processes were pretreated separately. In terms of treatment technology, the effect of Fenton oxidation and calcium hypochlorite oxidation were investigated and analyzed. Results showed that coagulation and sedimentation were more effective than Fenton oxidation for heavy metal removal. Compared with Fenton oxidation, calcium hypochlorite oxidation was more economical as it reduced the cost of chemicals by about 59.4% with an increase of 16.4% CODremoval rate. In addition, further pilot demonstration was conducted on the basis of small pilot experiments, and results showed that the pretreatment of each kind of wastewater could effectively remove heavy metal ions and COD, which reduces the treatment difficulty and economic cost and alleviates the load of subsequent biochemical treatment.

关 键 词：涂装材料废水 物化预处理 混凝沉淀 芬顿氧化 次氯酸钙 

分 类 号：TQ09[化学工程]