矿区餐厨垃圾厌氧发酵液作为污水处理厂碳源研究  

Anaerobic fermentation slurry from kitchen waste as carbon source for wastewater treatment

作　　者：车冬妮 张利强 张铭慧 刘永霞 李宁 CHE Dongni;ZHANG Liqiang;ZHANG Minghui;LIU Yongxia;LI Ning(CHN Energy Shendong Coal Group Co.,Ltd.,Yulin 718000,China;Xi'an Jinyang Yuanhua Environmental Protection Technology Co.,Ltd.,Xi'an 710000,China)

机构地区：[1]国能神东煤炭集团有限责任公司,陕西榆林718000 [2]西安金阳远华环保科技有限公司,陕西西安710000

出　　处：《工业水处理》2024年第12期147-152,共6页Industrial Water Treatment

摘　　要：以神东集团柳塔矿区餐厨垃圾为例,研究了过氧化氢(H_(2)O_(2))预处理对餐厨垃圾性质及其厌氧发酵产酸效能的影响,并考察厌氧发酵液作为矿区污水处理厂碳源的脱氮除磷效果。结果发现,H_(2)O_(2)预处理可有效促进餐厨垃圾中溶解性有机物的释放,同时强化餐厨垃圾浆液的流动性,H_(2)O_(2)预处理后挥发性脂肪酸(VFAs)产量从10810~18131 mg/L增大到21000~28000 mg/L,发酵产物从丁酸转化为乙酸,餐厨垃圾厌氧发酵酸化效率大幅度提升。预处理后的餐厨垃圾厌氧发酵液作为碳源不会影响活性污泥中硝化菌群的功能特征,出水NH_(4)^(+)-N小于1 mg/L,TP保持在0.5 mg/L以下,与葡萄糖作为碳源时的污水处理效果相当,说明矿区餐厨垃圾厌氧发酵液具有良好的可利用性。This work took the kitchen wastes from Liuta Mining Area of Shendong Coal as example,to investigate the effects of hydrogen peroxide(H_(2)O_(2))pretreatment on the performance of kitchen waste and the production efficiency of volatile fatty acid(VFAs)from anaerobic fermentation.Then the nitrogen and phosphorus removal effect of wastewater treatment with anaerobic fermentation slurry from kitchen waste as carbon source were investigated.Results indicated that the H_(2)O_(2) pretreatment could promote the release of dissolved organic matters in kitchen wastes and enhance the fluidity of kitchen waste slurry.As a result,the VFAs production after H_(2)O_(2) pretreatment increased from 10810-18131 mg/L to 21000-28000 mg/L,while the dominant fermentation products were converted from butyric acid to acetic acid.These suggested that the H_(2)O_(2) pretreatment achieved a significant improvement in the production efficiency of VFAs.Furthermore,when the anaerobic fermentation slurry from pre-treated kitchen waste as carbon source of wastewater treatment plants,the concentration of NH_(4)^(+)-N and TP in the effluent was less than 1 mg/L and 0.5 mg/L,which was equivalent to the treatment effect when glucose was used as the carbon source.All these demonstrated that the kitchen waste in the mining area had good usability.

关 键 词：餐厨垃圾 厌氧发酵 有机碳源 脱氮除磷 

分 类 号：X703.1[环境科学与工程—环境工程]