Drug for papermaking sludge and preparation and using method thereof

Abstract

The invention discloses a drug for papermaking sludge. The drug is prepared from a sludge cleanser, a sludge activating agent and a sludge reinforcing agent, wherein a weight ratio of the sludge cleanser, the sludge activating agent and the sludge reinforcing agent is (3 to 5) to (1 to 3) to 1; the sludge cleanser is prepared from the following raw materials of mung bean powder, modified kieselghur, acrylamide, polyethylene glycol, refined yellow iron ore powder and vinylidene fluoride; the sludge activating agent is prepared from the following raw materials of methanol, tetraethyl orthosilicate, urea, potassium sulfate and vitamin C; the sludge reinforcing agent is prepared from the following raw materials of cellulose, epoxy resin, acetic acid and modified starch. The invention also discloses a preparation method and a using method of the drug. According to the drug disclosed by the invention, the source of the raw materials is wide, the production cost is low, a preparation technology is simple, the investment cost of equipment is reduced, and the drug is suitable for large-scale industrial production; the drug prepared by the invention cannot affect the capacity of a paper machine, sludge is changed into a papermaking raw material, the production cost of an enterprise is greatly reduced, the environment cannot be polluted any more, and the resource is also saved.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a medicament for papermaking sludge. Background technique [0002] In the process of papermaking, a large number of fine fibers are lost and become sludge. The loss accounts for about 6-6.5% of the paper production. These fine fibers have a large surface area and are organic matter. They will be destroyed by anaerobic bacteria in the water for a long time. Pollution turns into sludge and forms solid waste, which wastes a lot of raw materials. More importantly, solid waste also seriously pollutes the environment. The existing papermaking sludge treatment methods include: first, remove 25-40% of the water in the solid waste through a filter press, and then transport it to landfill and incinerate. This method not only wastes raw materials but also pollutes groundwater and the atmosphere; second , to make solid waste into mud boards, about 30% of the sludge generated by the industry ...

AI Technical Summary

Problems solved by technology

[0002] In the process of papermaking, a large number of fine fibers are lost and become sludge. The loss accounts for about 6-6.5% of the paper production. These fine fibers have a large surface area and are organic matter. They will be destroyed by anaerobic bacteria in the water for a long time. Pollution turns into sludge and forms solid waste, which wastes a lot of raw materials. More importantly, solid waste also seriously pollutes the environment.

The existing papermaking sludge treatment methods include: first, remove 25-40% of the water in the solid waste through a filter press, and then transport it to landfill and incinerate. This method not only wastes raw materials but also pollutes groundwater and the atmosphere; second , to make solid waste into mud boards, about 30% of the sludge generated by the industry is used, and the added value is also very low. The gross profit margin is about 15%, and the profit is only about 2% after deducting processing costs. Due to the very small market demand for mud boards , the remaining 70% of solid waste is still landfilled and incinerated, which is also a waste of resources and pollutes the atmosphere; third, solid waste is processed into organic fertilizers for farmland. Since there are a large number of professional farmers of poultry and livestock in the countryside , and these fertilizers are higher in quality than organic fertilizers processed from solid waste, and lower in price than such fertilizers, so it is difficult to promote them, and the result is landfill and incineration; Acrylamide is used for retention, so that part of the solid waste remains in the paper, but 50% of the escape rate is in the system water during the addition process, which increases the water concentration of COD, SS, inorganic salts, and conductivity in the production system. High, resulting in decline in production output and quality, vicious cycle of escaped sludge in the water system, increasing the pressure on wastewater treatment, it is difficult for enterprises to meet the standards for treated water, and the remaining sludge is still press-filtered, landfilled and incinerated

These have brought inconvenience to manufacturers