摘要
印染废水排放量大,有机物和硫酸盐含量高,是难降解的工业废水。水解酸化-缺氧/好氧工艺是印染废水生化处理的常用工艺。在厌氧过程中,硫酸盐会被硫酸盐还原菌利用进行还原反应,生成硫化物,造成恶臭气体排放。硫化物会对污水处理设施和设备造成严重的腐蚀,抑制活性污泥中微生物的活性,造成废水处理效率降低;硫酸盐还原菌还会引起设备、管路、曝气器表面的碳酸钙结垢,影响设施、设备的正常运行。通过理论分析和实践经验提出了相应的对策,保证印染废水处理系统的稳定运行。
Printing and dyeing wastewater is difficult to degrade due to its large discharge and high content of organic matter and sulfate.Hydrolytic acidification anoxic/aerobic process is commonly used in the biochemical treatment of printing and dyeing wastewater.In the anaerobic process,sulfate will be used by sulfate reducing bacteria to carry out sulfate reduction reaction and produce sulfide,resulting in the emission of malodorous gas.Sulfide will cause serious corrosion to sewage treatment facilities and equipment,inhibit the activity of microorganisms in activated sludge and reduce the efficiency of wastewater treatment.Sulfate reducing bacteria can also cause calcium carbonate scaling on the surface of equipment,pipeline and aerator,affecting the normal operation of equipment.By means of theoretical analysis and practice,some countermeasures for the effect of sulfate were investigated,which would ensure the operation of printing and dyeing wastewater treatment plant.
作者
李瑞峰
马金金
孙兴旺
李治刚
于守政
LI Ruifeng;MA Jinjin;SUN Xingwang;LI Zhigang;YU Shouzheng(Luthai Textile Co.Ltd.,Zibo 255100,China)
出处
《染整技术》
CAS
2020年第10期25-28,共4页
Textile Dyeing and Finishing Journal
关键词
硫酸盐
硫化物
印染废水
水解酸化
抑制
缺氧/好氧
sulfate
sulfide
printing and dyeing wastewater
hydrolysis and acidification
inhibition
anoxic/aerobic
