HUANGPeng,YANGJia-qi,JINZe-hao,et al.Promoting Pollution Reduction and Carbon Mitigation in Wastewater Treatment Plants by Using High C/N Industrial Wastewater as External Carbon Source[J].China Water & Wastewater,2025,41(3):7-13.
Promoting Pollution Reduction and Carbon Mitigation in Wastewater Treatment Plants by Using High C/N Industrial Wastewater as External Carbon Source
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第3期
Page:
7-13
Column:
Date of publication:
2025-02-01
- Keywords:
- high C/N industrial wastewater; municipal wastewater treatment plant; external carbon source; total nitrogen removal; pollution reduction and carbon mitigation
- Abstract:
- The addition of external carbon sources to municipal wastewater treatment plant（WWTP) has led to increased treatment costs and higher carbon emissions. Based on batch experiments and the actual operation of WWTP, the impact of high C/N industrial wastewater as external carbon source was analyzed. The results indicated that the addition of the high C/N industrial wastewater did not negatively affect sludge microbial activity and effluent quality. Since the addition of high C/N industrial wastewater as external carbon source in WWTP, pollutant removal efficiency was improved, the total nitrogen removal rate was increased by 14.1%, costs was reduced by 24.9% and carbon emissions was reduced by 1 640 kg per 10 000 tons of water. In conclusion, substituting traditional external carbon sources with high C/N industrial wastewater enables the reduction of pollution and carbon emissions in WWTPs.
Last Update:
2025-02-01