乳制品废水作为污水处理厂碳源的可行性评估

Feasibility evaluation of dairy waste water as carbon source for sewage treatment plant

我国污水处理厂普遍存在进水碳源不足的问题。污水处理厂为了应对高排放标准带来的挑战,需要在处理过程中投加碳源,增加了污水处理的运行成本和温室气体排放。污水处理厂的碳排放是我国碳排放的重要组成部分,其减排目标的完成对于我国实现双碳目标具有重要作用。国家支持具有良好可生化性的食品加工废水作为碳源供污水处理厂生物脱氮使用。文章分析了某乳制品加工企业的生产废水作为污水处理厂替代碳源的可行性。结果表明,乳制品废水具有高碳、低碳的水质特点,可以在保证出水达标的前提下替代商业碳源。乳制品废水作为污水处理厂碳源既降低了污水处理的运行成本,也减少了温室气体的排放,具有经济、环境双重效益。

The problem of insufficient carbon source in wastewater influent is common in sewage treatment plants in China.To meet the challenges brought by high emission standards,sewage treatment plants need to add carbon sources in the treatment process,which increases the operating cost of sewage treatment and greenhouse gas emissions.The carbon emission of sewage treatment plant is an important part of China's carbon emission,and the completion of its emission reduction target is important for China to achieve the double carbon goal.Food processing wastewater with good biodegradability as a carbon source for biological nitrogen removal in sewage treatment plants was supported.Feasibility of the production wastewater of a dairy processing enterprise as an alternative carbon source in sewage treatment plant was analyzed.The results showed that the dairy wastewater had the characteristics of high carbon and low carbon water quality,and could replace commercial carbon sources under the premise of ensuring the effluent standard.As the carbon source of sewage treatment plant,dairy wastewater reduces the operating cost of sewage treatment and the emission of greenhouse gases,which had double benefits of economy and environment.