Analysis of Heavy Metal Pollution Sources in Sludge from a Sewage Treatment Plant in a Certain City
In order to further improve the effectiveness of urban sewage treatment,taking a sewage treatment plant in a certain city as an example,the sources of heavy metal pollution in the sludge of the sewage treatment plant were analyzed.Firstly,a brief introduction was given to a sewage treatment plant in a certain city,and a corresponding experimental plan was designed.Based on this,the characteristics of heavy metal pollution in sludge and the characteristics of heavy metal pollution sources in sludge based on potential ecological risk assessment method were analyzed.Through analysis,it can be concluded that due to the fact that the sewage treatment plant is mainly responsible for treating wastewater generated by electroplating,mechanical processing,non-ferrous metal smelting and other enterprises,the treated sludge contains various heavy metal elements such as Cd,Cr,Pb,As,Hg,Ni,Cu,Zn,etc.Among them,Hg,Cd and Cu pose a greater threat to the surrounding environment and should be the focus of treatment.
sewage treatment plantsludgeheavy metal pollution sources
NETL
NSTL
万方数据
