Abstract
Chemical precipitation phosphorus removal process can improve the phosphorus removal effect of sewage treatment system to meet the increasingly stringent discharge standards. In order to assist designers in selecting reasonable chemical phosphorus removal schemes, the analytic hierarchy process was applied to quantitatively evaluate each chemical phosphorus removal scheme from four aspects: water treatment effect, operation cost, operation and management difficulty and environmental impact. Finally, combined with an engineering example, the process of analytic hierarchy process quantitative evaluation of chemical phosphorus removal scheme and the method of selecting the optimal scheme are introduced, which provides a reference for the selection of chemical phosphorus removal scheme in engineering.
Highlights
Lake eutrophication is mostly caused by excessive nitrogen and phosphorus in the water body[1]
Studies have shown that excessive phosphorus content in the water body will have a certain inhibitory effect on the growth of submerged plants, which makes it difficult for submerged vegetation to complete the ecological adjustment of the water body[2]. It leads to the deterioration of environmental water quality
The analytic hierarchy process is a method that can solve complex decision-making problems in the weight distribution of various factors, which can assist relevant people in making decisions. It has been widely used in the field of water treatment
Summary
Lake eutrophication is mostly caused by excessive nitrogen and phosphorus in the water body[1]. Taking the upgrading and transformation of the phosphorus removal function of a wastewater treatment system of an aquatic product processing enterprise in Wuhan as an example, this paper analyzes the main factors that affect the choice of chemical phosphorus removal scheme in the process of wastewater treatment process design, and establishes a chemical phosphorus removal scheme through the application of analytic hierarchy process. It aims to quantify the chemical phosphorus removal schemes after comprehensively considering the water treatment effect, water treatment cost, management operation difficulty, and environmental impact, and select the best scheme to assist designers in making decisions. It provides a reference for the selection of phosphorus removal schemes in the process of sewage treatment technology design
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