Integrated OAAO-ceramic membrane MBR process for the capacity expansion of municipal wastewater treatment plant
An integrated oxic-anoxic-anaerobic-oxic(OAAO)-ceramic membrane MBR process with a treatment capacity of 20 000 m3/d was built to solve the problem of long-term full-load and even overload operation of a municipal wastewater treatment plant in Dinghu, Guangdong Province, China. With microbial enviro...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Industrial Water Treatment
2024-10-01
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| Series: | Gongye shui chuli |
| Subjects: | |
| Online Access: | https://www.iwt.cn/CN/10.19965/j.cnki.iwt.2024-0092 |
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| Summary: | An integrated oxic-anoxic-anaerobic-oxic(OAAO)-ceramic membrane MBR process with a treatment capacity of 20 000 m3/d was built to solve the problem of long-term full-load and even overload operation of a municipal wastewater treatment plant in Dinghu, Guangdong Province, China. With microbial environment precisely control, high-efficiency treatment with micro-oxygenated organisms was realized. The project operated stably after completion, with COD and NH4+-N in effluent reaching the Ⅳ class water standard in the Environmental Quality Standard for Surface Water(GB 3838-2002), while TN and TP could also meet the Class A standard in the Pollutant Discharge Standard for Urban Wastewater Treatment Plants(GB 18918-2002) stably. This project involved a total investment of 40.61 million yuan, covered an area of 4 713.4 m2, and the unit treatment cost was 0.42 yuan/t. Compared with the AAO-denitrification filter process with the same treatment capacity in this wastewater treatment plant, integrated OAAO-ceramic membrane MBR process saved 43.8% of the total investment, reduced 66% of area and 19.23% of unit treatment cost, also decreased the waste sludge production to 1.5 t/d. |
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| ISSN: | 1005-829X |