A performance regeneration method of porous adsorbent material after adsorbing malachite green

Abstract

The invention mainly belongs to the technical field of pollution treatment of trace malachite green in a freshwater culture water body and in particular relates to a performance regeneration and recovery method of a porous adsorption material adsorbed with malachite green. The performance regeneration and recovery method comprises the following steps: collecting the porous adsorption material adsorbed and loaded with the malachite green to prepare a suspension solution; adding a reducing agent into the suspension solution in a solid form or a high-concentration solution form until the malachite green loaded on the porous adsorption material cannot be detected in a sampling and analysis process; then continually adding a certain amount of the reducing agent; after continually stirring for acertain time, filtering and removing surface water to obtain the regenerated porous adsorption material with recovered adsorption performance. According to the method provided by the invention, dyestuffs including the malachite green and the like, biologically adsorbed, adsorbed by active carbon, adsorbed by an inorganic mineral porous material and adsorbed by ion exchange resin, in the water body can be easily desorbed, so that the recovery and regeneration of performance of the porous adsorption material made of various materials are realized and the regenerated porous adsorption material is used for the next turn of adsorption and purification process.

Description

technical field [0001] The invention mainly belongs to the technical field of pollution treatment of trace amounts of malachite green in freshwater aquaculture water, and in particular relates to a performance regeneration method of a porous material for absorbing malachite green. Background technique [0002] China is the world's largest freshwater aquaculture country, and its aquaculture production ranks first in the world, accounting for 2 / 3 of the world's aquaculture production. China's aquaculture area is 5.75 million hectares, of which the freshwater aquaculture area is 4.41 million hectares. Guangdong, Hubei, Jiangsu, Hunan and Anhui are the main bases of freshwater aquaculture in China. Due to environmental pollution and human violations, there are often pollution problems in aquaculture water bodies, such as heavy metal pollution, antibiotic pollution, ammonia nitrogen eutrophication pollution, organic benzene compound pollution, etc., which will pose threats and r...

AI Technical Summary

Problems solved by technology

[0007] People have always paid more attention to many indicators of the purification of adsorption materials, but less attention has been paid to the desorption indicators that affect the economy and direct cost of materials.

If the above technical problems cannot be solved well, it will be difficult for many seemingly good adsorption and purification materials to be successfully applied to the actual water purification on a large scale, let alone the purification of the huge area of ​​aquaculture water in our country.