Safety risk and prospect analysis of titanium gypsum on soil utilization
Up to now,the resource utilization rate of titanium gypsum is less than 10％,and there is no application field that can be consumed on a large scale,and soilization may be an important direction.In this paper,titanium gypsum was proposed as a soil resource,and the safety problems faced by it as a soil resource utilization were analyzed,and the basic properties and safety risks of it as soil were ex-plored.The safety risk of titanium gypsum was evaluated by leaching toxicity,its physicochemical properties and feasibility in soil utilization were also analyzed,and its soil risk and nutritivity were in-vestigated by Nemero index(P).The results show that the physical and chemical properties of titanium gypsum are suitable for further resource utilization as soil parent material,and there is no serious envir-onmental risk within the limit range of 8 heavy metals stipulated in the national agricultural soil and green soil standards.However,the content of heavy metals such as vanadium exceeds the standard of organic substrates used in greening and may become new pollutants.In view of the above results,it can be considered as a soil resource utilization after the nutritional improvement and the elimination of heavy metal pollution risk.This study provides a reference for the utilization of titanium gypsum as soil resources and the direction of large-scale consumption.
titanium gypsumsolid wasteleaching toxicitysoil heavy metalsresource utilizationse-curity risk
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