Artificial composite soil layer treatment system capable of reinforcing removal of endocrine disruptors

Abstract

The invention discloses an artificial composite soil layer treatment system capable of reinforcing the removal of endocrine disruptors. The system comprises three layers from top to bottom, namely a degradation layer, an adsorption layer and a filtering and bearing layer in turn, wherein the filling medium of the degradation layer is natural soil, artificially improved soil or the permeable soil obtained by mixing soil and river sand so that the aerobic degradation of endocrine disruptors can be reinforced; the medium of the adsorption layer is a large particle size hard adsorption material with good adsorbability to endocrine disruptors so that endocrine disruptors and other pollutants in the leachate can be further removed through adsorption; and the medium of the filtering and bearing layer is coarse gravels and pebbles which are used to support the upper filling medium and filter fine particle pollutants. The system can be used to remove more than 85% of endocrine disruptors; and the system has higher hydraulic load and lower site requirement and is suitable for the advanced treatment of the slightly polluted water body or the pretreatment process of the groundwater recharge of the regenerated water.

Description

technical field [0001] The invention relates to a sewage land treatment system, in particular to an artificial composite soil treatment system for strengthening the removal of endocrine disruptors, which is suitable for advanced treatment of slightly polluted water bodies or as a pretreatment process for underground recharge of regenerated water, and belongs to the technical field of environmental engineering. Background technique [0002] my country is a country seriously short of water, and the shortage of water resources has become one of the important factors restricting the coordinated development of society and economy. Sewage recycling is an effective way to solve the problem of water shortage, and it is also a powerful guarantee to meet the country's major needs for sustainable use of water resources. However, due to the existence of a variety of toxic substances and pathogenic microorganisms in sewage, the threat to the safe utilization of reclaimed water cannot be ...

AI Technical Summary

Problems solved by technology

[0006] 1. The existing land treatment system mainly focuses on conventional pollution indicators such as COD, BOD, SS, nitrogen, and phosphorus, and the process of intensified removal of endocrine disruptors with low concentrations and high hazards is still in a blank state

[0007] 2. The existing land treatment system has disadvantages such as low hydraulic load, large footprint, and easy clogging. The main limiting factor is the infiltration of the soil medium

[0008] 3. Most of the existing land treatment systems use natural land as the treatment infiltration medium, and have specific requirements for factors such as the topography and geology of the site, soil and groundwater depth, etc. These factors greatly limit the application of land treatment technology

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