LIUJin-xing,HUBang,ZHANGXin,et al.Application of Multi-mode AO and MBR Combined Process in Industrial Wastewater Treatment Plant[J].China Water & Wastewater,2023,39(20):83-88.
多模式AO+MBR工艺在工业污水处理厂中的应用
- Title:
- Application of Multi-mode AO and MBR Combined Process in Industrial Wastewater Treatment Plant
- 关键词:
- 污水处理厂; 多模式AO+MBR池; 高级氧化池
- Keywords:
- WWTP; multi-mode AO and MBR tank; advanced oxidation tank
- 摘要:
- 宜兴某工业污水处理厂为宜兴经济开发区集成电路材料产业园配套项目，总设计规模为5.0×104 m3/d，近期规模为2.5×104 m3/d，其中含氟废水0.2×104 m3/d，设计出水水质执行《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》（DB 32/1072—2018）中表1标准。首先对含氟废水进行除氟除钙以及硝化预处理，再与综合废水混合后进行水解酸化池+多模式AO+MBR二级处理，深度处理采用高级氧化+紫外线消毒工艺；污水厂设置事故应急池，在进水受到冲击和事故工况时，作为应急措施暂存事故污水，以确保污水厂出水稳定达标。实际运行表明，出水水质稳定达标。本工程总投资约4.5亿元，部分处理构筑物合建，具有占地小、投资低、后期管理方便等优点。事故应急池、水解酸化池、生化池均加盖并覆土绿化，以避免臭气外逸，且具有较好的景观效果。
- Abstract:
- An industrial wastewater treatment plant in Yixing is a supporting project of an integrated circuit material industrial park in Yixing economic development zone. The total design scale is 5.0×104 m3/d, and the recent scale is 2.5×104 m3/d, including 0.2×104 m3/d fluoride-containing wastewater. The design effluent quality is required to meet the limit in table 1 specified in Discharge Standard of Main Water Pollutants for Municipal Wastewater Treatment Plant & Key Industries of Taihu Area (DB 32/1072-2018). The fluorine-containing wastewater is firstly pretreated by removing fluoride and calcium and nitrification. Then, it is mixed with the comprehensive wastewater and subjected to hydrolytic acidification tank and multi-mode AO+MBR secondary treatment, and the advanced treatment process is advanced oxidation and ultraviolet disinfection. An emergency tank is set up in the plant to temporarily store the accident wastewater as an emergency measure in case of influent impact and accident condition, so as to ensure that the effluent quality stably meets the discharge standard. Actual operation shows that the effluent quality meets the standard stably. The total investment of the project is approximately 450 million yuan, and some of the structures are co-built, which has the advantages such as small footprint area, low investment and convenient later-stage management. The emergency tank, hydrolytic acidification tank and biochemical tank are all covered and laid with green to avoid the escape of odor, which has a good landscape effect.
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