ZHANGYun,JINTao,LEIPeishu.Design of a Small and Intensive Industrial Wastewater Treatment Plant[J].China Water & Wastewater,2026,42(10):97-102.
小型集约型工业污水处理厂设计
- Title:
- Design of a Small and Intensive Industrial Wastewater Treatment Plant
- Keywords:
- intensive wastewater treatment plant; industrial wastewater; equalization emergency tank; ozone contact tank; cloth media filter
- 摘要:
- 甘肃省天水市某新型建材园区现状无污水处理设施，为避免污水直排污染环境，新建1座规模1 000 m3/d的污水处理厂。针对进水水质差异大、可生化性差等特点，采用“粗格栅及进水泵房+事故调节池+细格栅+混合絮凝池+初沉池+A/A/O生化池+二沉池+终沉池+臭氧接触池+滤布滤池+接触消毒+尾水排放”工艺，出水水质达到《城镇污水处理厂污染物排放标准》（GB 18918—2002）一级A标准，其中COD、TN、TP去除率分别达到88.9%、75.0%和92.9%。污水处理构筑物采用集约式布置，各处理单元采用组合池形式，可有效减少构筑物间的管路水头损失，节约用地，便于集中管理，降低运行成本。与传统的分散式单体构筑物布局相比，本工程节约用地约25%，减少管路水头损失约3.0 m，节约运行电费约5 000 元/a。
- Abstract:
- In a new building materials park in Tianshui City, Gansu Province, there are currently no wastewater treatment facilities. To prevent direct wastewater discharge from polluting the environment, a new wastewater treatment plant with a capacity of 1 000 m3/d was constructed. Given the significant variations in influent quality and poor biodegradability, the following process was adopted: coarse screening and influent pumping room + equalization emergency tank + fine screening + mixed coagulation tank + primary sedimentation tank + A/A/O biochemical tank + secondary sedimentation tank + final sedimentation tank + ozone contact tank + cloth media filter + contact disinfection + tailwater discharge. The effluent quality met the first level A limit specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), with the removal rates of COD, TN, and TP reaching 88.9%, 75.0%, and 92.9%, respectively. The treatment structures were arranged in an intensive layout, with each treatment unit designed as a combined tank. This layout effectively reduced pipeline head loss between structures, saved land use, facilitated centralized management, and lowered operational costs. Compared with traditional decentralized single?structure layouts, this project saved approximately 25% of land, reduced pipeline head loss by about 3.0 m, and cut annual operational electricity costs by approximately 5 000 CNY/a.
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