6000 m~3/d甲醛产业化工园区污水处理工程案例
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摘要
本文介绍了溧阳某甲醛产业化工园区污水处理工程,该案例设计水量为6000 m~3/d,采用调节+厌氧+水解+氧化沟+深度处理为主的工艺。本文对设计参数、设计理念、各个工艺段效率和运行费用进行了分析。其中主要特征污染因子甲醛通过厌氧和水解池进行降解,深度处理采用曝气生物滤池+臭氧接触池+吸附滤池使废水达到排放要求。水解池的设计有机负荷为1.07 kgCOD/(m~3·d)时,COD去除率40%以上。氧化沟的设计有机负荷为0.31kgCOD/(m~3·d)时,COD去除率为85%以上,最后经过生物滤池、臭氧接触池和吸附滤池的深度处理之后出水水质执行《太湖地区城镇污水处理厂及重点工业行业主要水污染物排放限值》(DB32/T1072-2007)。
This paper introduced the wastewater treatment project of the formaldehyde industrial park and the design scale of 3000 m~3/d, which applied the technology of regulating-hydrolysis-oxidation ditch-deep treatment. This paper analyzed the design parameters, design concept, efficiency and operation cost of each process. Among them, the main pollution factor-formaldehyde was degraded through anaerobic and hydrolysis tanks, and the advanced treatment used biological aerated filter+ ozone contact tank + adsorption filter to make the wastewater meet the requirements of discharge. When the designed organic load of hydrolysis tank was 1.07 kgCOD/(m~3·d), the COD removal rate was more than 40%. When the designed organic load of the oxidation ditch was 0.31 kgCOD/(m~3·d), the COD removal rate was over 85 %. Finally, the effluent quality after the deep treatment of biological filter, ozone contact tank and adsorption filter was implemented as the discharge limit of 《Discharge standard of main water pollutants for municipal wastewater treatment plant & key industries of Taihu area》(DB32/T1072-2007).
This paper introduced the wastewater treatment project of the formaldehyde industrial park and the design scale of 3000 m~3/d, which applied the technology of regulating-hydrolysis-oxidation ditch-deep treatment. This paper analyzed the design parameters, design concept, efficiency and operation cost of each process. Among them, the main pollution factor-formaldehyde was degraded through anaerobic and hydrolysis tanks, and the advanced treatment used biological aerated filter+ ozone contact tank + adsorption filter to make the wastewater meet the requirements of discharge. When the designed organic load of hydrolysis tank was 1.07 kgCOD/(m~3·d), the COD removal rate was more than 40%. When the designed organic load of the oxidation ditch was 0.31 kgCOD/(m~3·d), the COD removal rate was over 85 %. Finally, the effluent quality after the deep treatment of biological filter, ozone contact tank and adsorption filter was implemented as the discharge limit of 《Discharge standard of main water pollutants for municipal wastewater treatment plant & key industries of Taihu area》(DB32/T1072-2007).
引文
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[2]徐富,黄振兴.预处理+IC反应器+MBR工艺处理甲醛废水的工程实例介绍[J].给水排水,2017,43(7):80-84.
[3]许凤刚,徐富,周婷婷.季戊四醇废水处理工程实践[J].广东化工,2017(1):30-35.
[4]张智,李柏林,相欣奕,等.处理低温低碳源城市污水的A/A/O氧化沟工艺脱氮运行工况优化[J].环境工程学报,2012,6(8):2565-2570.
[5]赵永柱.臭氧氧化法深度处理二沉池出水实验研究[J].市政技术,2013,31(4):137-139.
[6]叶宇兵,张列宇.生物-吸附滤池组合系统处理微污染水[J].中国给水排水,2014(20):102-105.