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.
Domestic Sewage Treatment of Oil and Gas Station by a Combined Process of Anaerobic-Anoxic/Pulse Trickling Filter/Medium Filter Bed
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第2期
Page:
120-125
Column:
Date of publication:
2024-01-17
- Keywords:
- oil and gas station; domestic sewage; anaerobic-anoxic; pulse trickling filter; medium filter bed
- 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.
Last Update:
2024-01-17