A kind of disposal method of solid waste containing thallium

Abstract

The invention discloses a method for disposing of thallium-containing solid waste, comprising the following steps: in parts by mass, 0.3-0.5 parts of polyacrylate emulsion, 0.3-0.5 parts of ethylene-vinyl acetate copolymer emulsion, 1-2 parts of cement Mixing together to obtain a thermosetting encapsulating material; adding the thermosetting encapsulating material to the thallium-containing solid waste, mixing and stirring, and then curing, thereby completing the disposal of the thallium-containing solid waste. The invention not only reduces the consumption of chemicals, but also reduces the capacity-enhancing ratio, and has good disposal effect, and the leaching concentration of thallium pollutants in the waste residue after disposal is lower than the "Discharge Standard of Thallium Pollutants in Industrial Wastewater" (DB44 / 1989-2017) , which can be widely applied in the field of thallium-containing solid waste treatment.

Description

technical field [0001] The invention relates to the technical field of disposal of thallium-containing solid waste, in particular to a disposal method of thallium-containing solid waste. Background technique [0002] In 2014, Hunan Province issued the first discharge standard of industrial wastewater thallium pollutants in the country - "Industrial Wastewater Thallium Pollutant Discharge Standard" (DB43 / 968-2014). In 2017, Guangdong Province issued a stricter "Industrial Wastewater Thallium Pollutant Discharge Standard". Standards (DB44 / 1989-2017), all of which put forward higher requirements for the safe disposal of thallium-containing solid waste. [0003] In the existing technology, the newly-built thallium-containing wastewater treatment technology is mainly sulfidation method + adsorption treatment process, but this method produces a large amount of thallium-containing sulfidation waste residue, and conventional lime stabilization and cement solidification technologies ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of the existing thallium-containing solid waste disposal technology, such as high medicament dosage and poor disposal effect, the present invention provides a thallium-containing solid waste disposal method, which not only reduces the medicament consumption, but also reduces the capacity increase ratio, Moreover, it has a good disposal effect. The leaching concentration of thallium pollutants in the waste residue after disposal is lower than the "Discharge Standard for Thallium Pollutants in Industrial Wastewater" (DB44 / 1989-2017), which can be widely used in the field of thallium-containing solid waste treatment.