MIAOPan.Application of Denitrifying Biofilter and High Efficiency Sedimentation Tank in Upgrading of a WWTP[J].China Water & Wastewater,2022,38(6):113-116.
反硝化生物滤池+高效沉淀池用于污水厂改造
- Title:
- Application of Denitrifying Biofilter and High Efficiency Sedimentation Tank in Upgrading of a WWTP
- Keywords:
- WWTP; upgrading; light denitrification biofilter; micro-sand high efficiency sedimentation tank
- 摘要:
- 传统污水厂处理出水水质很难达到《地表水环境质量标准》（GB 3838—2002）的准Ⅳ类标准，通常需要进行升级改造才能实现。某污水处理厂新增深度处理采用轻质反硝化生物滤池+微砂高效沉淀池工艺，处理水量为40×104 m3/d，处理后的出水水质由《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级A排放标准提高到地表水准Ⅳ类标准，运行成本为0.355 元/m3，建设轻质反硝化生物滤池和微砂高效沉淀池投资成本分别为274、143.5 元/m3。该工程投运后取得较好的处理效果，可供其他提标改造项目参考。
- Abstract:
- It is very difficult for the effluent of a traditional wastewater treatment plant to reach level quasi-Ⅳ in Environmental Quality Standards for Surface Water (GB 3838-2002), thus it usually needs to be upgraded. The advanced treatment process of a newly built WWTP with a treatment capacity of 40×104 m3 /d, adopts light denitrification biofilter and micro-sand high efficiency sedimentation tank. The effluent quality after treatment is improved from the first level A criteria in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) to the level quasi-Ⅳ in GB 3838-2002. The operating cost is 0.355 yuan/m3. For this upgrading project, the investment costs of constructing light denitrification biofilter and micro?sand high efficiency sedimentation tank are 274 yuan/m3 and 143.5 yuan/m3 respectively. The excellent treatment performance has been achieved after operation, which could provide references for other upgrading projects.
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