经济高效的污水生物脱氮除磷新技术研究

控制污水中氮和磷的排放,对于防治水体富营养化是十分重要的。针对常规生物脱氮除磷技术和工艺中存在的问题,研究开发出从不同类型污水中去除氮和磷的生物膜与活性污泥结合工艺、亚硝酸型脱氮技术、新型膜生物反应器和立体循环一体化氧化沟等。这些技术和工艺发挥了不同微生物苗群的优势,使其分别处于各自最佳状态,可提高处理效率、简化操作、降低处理费用。

New Technology with High Efficiency and Saving Energy for Nitrogen and Phosphors Removal from Wastewater

It is very important that discharges of nitrogen and phosphors in wastewater are controlled to prevent eutrophication in water bodies such as lakes and rivers. According to some problems in traditional processes for nitrogen and phosphors removal from wastewater by biological technology, a few of new technologies were investigated, such as, a biofilm and activated sludge combined system, a nitrosofication and denitrosofication process for nitrogen removal, a membrane bioreactor and a integrated oxidation ditch process with vertical circle. These processes and technologies can increase the efficiency and decrease the cost for wastewater treatment, and their operation is simple.