KANHe-ke,WANGYun-chuan,HUANGWen-sheng,et al.Domestic Sewage Treatment of Oil and Gas Station by a Combined Process of Anaerobic-Anoxic/Pulse Trickling Filter/Medium Filter Bed[J].China Water & Wastewater,2024,40(2):120-125.
厌氧-缺氧/滴滤/介质滤床处理油气站场生活污水
- Title:
- Domestic Sewage Treatment of Oil and Gas Station by a Combined Process of Anaerobic-Anoxic/Pulse Trickling Filter/Medium Filter Bed
- Keywords:
- oil and gas station; domestic sewage; anaerobic-anoxic; pulse trickling filter; medium filter bed
- 摘要:
- 针对油气站场生活污水水量小、间歇排水、水量波动大等特点，采用耦合物化、生化和生态处理的恒水位厌氧-缺氧/竖向脉冲滴滤/介质滤床的污水处理工艺，以干湿交替运行方式实现站场的污水处理。以东营市鲁源管理站生活污水处理为例，该工程污水处理量为5.0 m3/d，恒水位厌氧-缺氧池的水力停留时间为1.2 d；脉冲滴滤池水力负荷为6.3 m3/（m2·d）；介质滤床水力负荷为0.5 m3/（m2·d）。经过启动驯化和冬季过渡阶段，系统稳定运行，原水COD、NH4+-N、TN、TP的平均浓度分别为214.2、42.71、62.23、4.42 mg/L，出水相应指标的平均浓度分别为31.9、4.29、10.74、0.53 mg/L，平均去除率分别为85.1%、90.0%、82.7%和88.0%，满足《城市污水再生利用 城市杂用水水质》（GB/T 18920—2020）的绿化用水标准和《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级A标准。
- Abstract:
- Focused on the characteristics of little domestic sewage, intermittent drainage, and significant water consumption fluctuation in oil and gas station, the sewage treatment process of constant water level anaerobic-anoxic/vertical pulse trickling filter/medium filter bed coupled with physicochemical biochemical ecological treatment is adopted to treat the station’s sewage by alternating dry-wet operation. The sewage treatment capacity of the Luyuan management station of Dongying is 5.0 m3/d. The hydraulic retention time of constant water level anaerobic-anoxic is 1.2 days. The hydraulic load of a pulse trickling filter is 6.3 m3/(m2·d) and that of the filter bed is 0.5 m3/(m2·d). After the start-up domestication and winter transition stage, the system ran stably. The average influent concentrations of COD, NH4+-N, TN and TP were 214.2 mg/L, 42.71 mg/L, 62.23 mg/L and 4.42 mg/L, respectively. The average effluent concentrations of COD, NH4+-N, TN and TP were 31.9 mg/L, 4.29 mg/L, 10.74 mg/L and 0.53 mg/L, respectively, which meet the landscaping criteria in The Reuse of Urban Recycling Water—Water Quality Standard for Urban Miscellaneous Use (GB/T 18920-2020) and first level A criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The average removal rates were 85.1%, 90.0%, 82.7% and 88.0%, respectively.
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