摘要
现行城市污水处理厂污泥多被视作废物而丢弃,从污水中转移到污泥中污染物氮磷没有及时分离回收,造成资源浪费。国内外针对污泥水解酸化阶段研究的报道多集中在污泥水解发酵产酸用于生物脱氮除磷系统补充碳源上。然而污泥水解发酵产酸的同时,也释放出大量的氮磷。为了回收利用污泥中的氮磷,基于污泥发酵产酸的理论提出了污泥水解酸化释出氮磷以回收资源这一污泥处理新思路,探讨了其影响因素和控制对策,指出通过适当的环境调控,就可以使污泥中氮磷大量释出。
The sludge in the wastewater treatment plant is regarded as waste. The ammonium and phosphorus transferred from sewage to municipal sludge that is potential energy and fertilizer are discharged, therefore it results the waste of resources. The studies on the hydrolysis and fermentation of sludge in the literature mainly focus on producing the organic substance that is needed for the enhancing biological nutrient removal. However, at the same time, a lot of ammonium and phosphorus are released. In order to recover ammonium and phosphorus from excess sludge, a new biological treatment process is put forward, which bases on the hydrolysis-acidification capability of microorganism. The influencing factors and the controlling strategies to promote pollutants release are suggested, and the ammonium and phosphorus can be released from excess sludge via proper environmental conditioning.
出处
《应用化工》
CAS
CSCD
2009年第4期604-607,共4页
Applied Chemical Industry
基金
教育部科学技术研究重点项目(207118)
西安工业应用发展研究项目(YF07079)
关键词
污泥处理
水解酸化
氮磷回收
sludge treatment
hydrolysis and acidification
ammonium and phosphate reclamation
