废水中磷的去除研究进展

废水中大量磷酸盐的存在是引起富营养化的主要原因之一,富营养化给自然水体(包括淡水和海水)造成了严重的负面影响.因此有必要在污水排放到环境中之前将磷除去.本文概述了几种除磷技术的研究现状:包括化学沉淀法除磷、人工湿地系统除磷、利用多种微生物的超量吸磷作用除磷以及一些改良了的除磷工艺等.有关厌氧条件下除磷的方法和机理的研究刚刚开始,厌氧过程中磷去除的工艺控制条件还有待得到进一步研究.

Recent Progress in Removing Phosphorus from Wastewater

Lots of phosphate presented in wastewater is one of the main causes of eutrophication that negatively affects many natural water course, both fresh water and marine. Thus, removing phosphorus from the wastewater is necessary before they return to the environment. This paper summerizes the current status in phosphorus-removal technologies from the most common approaches, such as chemical precipitation, constructed wetland systems, adsorption by various microorganisms and several innovative engineering solutions. Researches on the methods and mechanism of phosphorus removal under anaerobic conditions are at the beginning, and the process control need to be investigated.