HEAVY METAL POLLUTION CONTROL METHOD BASED ON CHEMICAL SOLIDIFICATION TECHNOLOGY

Q JIA
2019 Applied Ecology and Environmental Research  
Jia: Heavy metal pollution control method based on chemical solidification technology -9025 -APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 17(4):9025-9034. Abstract. In view of the harm caused by sludge in the ecological environment, this paper adopts the solidification treatment technology based on the principle of environmental ecological effect to analyze the heavy metal pollution sources in sludge. With the aid of the solidification technology and considering the physical and chemical blocking
more » ... d chemical blocking effects of heavy metals, it analyzes the effect of the solidification technology in treatment of heavy metals at different ratios. The results show that the smaller the particle size, the better the leaching of heavy metals in the sludge; and that the leaching rate is higher under the acidic condition than under the alkaline one. Through research it is found that the impact of heavy metals in the sludge on the environment is influenced by two factors -the controlled distance and the time, so a model can be constructed to predict the migration parameters of heavy metals in the sludge according to the influencing predictors. Then based on the migration parameters, this paper introduces the inverse problem of pollution source control and the control method to optimize the problem. Through the above discussion, it proposes an environmental-effect-oriented heavy metal pollution control method, that is, optimizing the solidified materials by converting the source control problem to the inverse problem of capacity control. In this way, the concentrations of heavy metals in the sludge after solidification treatment can be effectively controlled to meet the requirements of environmental effects. Keywords: heavy metal pollution, ecological effect principle, heavy metal migration parameters, source control method, model prediction APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 17(4):9025-9034.
doi:10.15666/aeer/1704_90259034 fatcat:cclxuhoydbbmhl3n5atlcjjxgm