A kind of preparation method of high-efficiency wetting and purifying agent and its application in environmental purification

Abstract

The present invention provides a preparation method for high -efficiency wet wet water purification agents. The purification agent uses the reducing sulfurization and cross -linking reactions to effectively improve the wetting ability of the water purifier.Pollutants have strong purification capabilities and have strong purification battery life. The preparation methods of the above purification agent can also effectively improve the mechanical strength of the water purification agent carrier.

Description

[0001] The invention belongs to the field of environmental purification, and in particular relates to a preparation method of a high-efficiency wetting and purifying agent and its application in the field of environmental purification. Background technique [0002] Studies have shown that in today's aquaculture process, due to the low bait utilization rate, excessive discharge of residual bait, and excessive discharge of farmed animal feces, eutrophication of water bodies, C, N, and P enrichment pollution of sediments and sediment oxidation are caused. The reduction potential is lowered. Increased eutrophication of water bodies will lead to excessive ammonia nitrogen and nitrite, which will have a toxic effect on aquatic animals. The discharge of a large amount of aquaculture wastewater has caused a huge impact on the surrounding environment. The water environment has deteriorated, red tides have occurred frequently, and ecological balance and biodiversity have also been destr...

AI Technical Summary

Problems solved by technology

For example, in the cell immobilization technology, the embedding method is to disperse the cells into the porous carrier, or use the polymer to embed the cells inside when the gel is formed, so as to achieve the purpose of fixing the cells, which is currently the most widely used. However, when using the biological metabolic function of sulfur-oxidizing bacteria to treat sulfur-containing wastewater, the metabolic activities of functional microorganisms in the reactor are often inhibited due to the high concentration of sulfide in the influent, resulting in the need for a long time for functional microorganisms. Long adaptation period, and because the adhesion of sulfur oxidizing bacteria is not strong, it is easy to lose with the effluent, so it is not easy to maintain a high concentration of sulfur oxidizing bacteria in the reactor

[0004] Such as CN103951052 A Beijing University of Technology discloses the preparation and application of a polyurethane carrier-based sulfur-oxidizing bacteria immobilized bioactive filler, blocky polyurethane foam is solidified by extruding and absorbing the embedding fluid to absorb and solidify the embedding fluid loaded with sulfur-oxidizing bacteria However, the polyurethane material has the following problems: (1) The density is single, and there are only two states of floating and sinking. In the dynamic system of water body changes, it cannot be effectively used for a long time. Suspended in water; (2) Polyurethane has no sites on the surface and is not suitable for establishing sites, so it is not suitable for selective adsorption of sulfur oxidizing bacteria; (3) Polyurethane has a single pore size and only has irregular macropores , although the large pores are good for adsorption, the specific surface area is extremely small, the fixation effect is poor, and the stability is somewhat improved; (3) Polyurethane, as an organic high polymer, will cause serious pollution. A cube with a length of 3‐5mm, a cuboid with a length, width and height of 3‐5mm, a cylinder with a diameter of 3‐5mm and a height of 3‐5mm, etc., are similar to the carrier of particles. After purifying large areas of water such as lakes and oceans, There are huge problems in recycling, which can easily cause pollution

However, the polyurethane material has the following problems: (1) the carrier is complex, and it is difficult to mix evenly, which makes it impossible to achieve homogeneous mixing, resulting in poor stability of the adsorption effect of the entire adsorbent; (2) no effective adsorption vacancies, only relying on the Sequential macroporous adsorption of bacteria, single adsorption

[0006] In addition, in the inventor’s series of applications on the same day, the method of attaching sulfur-oxidizing bacteria by calibration and the water purification agent obtained by this method have the following problems that need to be improved: (1) The purification effect of the purification agent on water bodies Excellent and high efficiency, but when used for domestic sludge, such as Wuxi Meiliang Lake coastal sludge purification, due to the low water content of the sludge, the purification effect of the purifier cannot be fully exerted; (2) Although the calibration can effectively attach sulfur (3) The loading capacity of sulfur oxidizing bacteria needs to be improved; (4) Purifiers can purify water continuously for 1-1.5 years under stable laboratory conditions, but In the complex actual use process, the ability of continuous purification is poor; (5) The mechanical strength of the silica carrier becomes a fatal flaw in the application process due to the existence of macropores and mesopores

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