Engineering Research on ECOSUNIDE Technique for Nutrient Removal from Municipal Sewage

Abstract:

For engineering research, ECOSUNIDE technique was applied in a sewage treatment plant under low temperature and low carbon resource. The whole experimental system has being running steadily after reasonable adjustments of influent distribution, returned sludge ratio and DO. The effluent qualities meet the Class I-B Criteria Specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002).Effluent BOD5 and NH₃-N meet the Class I-A Criteria. The results indicates that the treatment capacity could fluctuate within a range of ±3000 m³/d with DO properly controlled. In aerobic sections, the best DO was 2-3 mg/L. The optimal sludge emission amount could be attained through settlement ratio and sludge concentration with the present emission amount of sludge of 680 m³/d. It might be the restrictive factor that BOD/TN was less than 3 on TN removal which could not steadily achieve the Class I-A Criteria.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 3422-3427
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.3422
• Online since: November 2011
• Authors: Yan Li, Yan Qiu Zhang
• Keywords: DO, Emission Amount of Sludge, Influent Distribution, Returned Sludge Ratio, Returned Sludge Ratio Influent Distribution

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