A kind of preparation method of papermaking sludge reuse agent

Abstract

The invention discloses a preparation method of papermaking sludge recycling agent, which adopts polyvinyl alcohol and methacrylic esterification reaction to generate polymer ester, and then polymerizes with cationic monomer DMC and acrylamide under the action of initiator ammonium persulfate It is a high-molecular polymer, and the surface is grafted with chitosan to obtain a recycling agent, which can efficiently recover fine fibers, calcium carbonate, talcum powder, starch, sizing agents, etc. in papermaking sludge lost with circulating water Papermaking raw materials can not only save papermaking pulp, improve the retention rate and utilization rate of raw materials and improve the quality of paper products, but also reduce the amount of sludge generated, thereby saving energy and cost of sludge treatment, which is beneficial to industrial production .

Description

technical field [0001] The invention relates to the technical field of clean production and waste treatment, in particular to a preparation method of a papermaking sludge recycling agent. Background technique [0002] During the papermaking process, with the flow of sewage circulating water, a large amount of fine fibers, calcium carbonate, talcum powder, starch, sizing agent, etc. are lost with the water, and the lost materials will be polluted by anaerobic bacteria in the water body for a long time and become sludge , the formation of solid waste not only wastes a lot of raw materials, but also seriously pollutes the environment. [0003] For the treatment of existing papermaking sludge, most of them adopt filter press landfill incineration or use papermaking sludge to prepare other low-interest sludge boards, etc. The treatment method of filter press landfill cannot essentially eliminate pollution, and incineration will produce A large amount of flue gas causes new pollu...

AI Technical Summary

Problems solved by technology

[0002] During the papermaking process, with the flow of sewage circulating water, a large amount of fine fibers, calcium carbonate, talcum powder, starch, sizing agent, etc. are lost with the water, and the lost materials will be polluted by anaerobic bacteria in the water body for a long time and become sludge , the formation of solid waste not only wastes a lot of raw materials, but also seriously pollutes the environment.

[0003] For the treatment of existing papermaking sludge, most of them adopt filter press landfill incineration or use papermaking sludge to prepare other low-interest sludge boards, etc. The treatment method of filter press landfill cannot essentially eliminate pollution, and incineration will produce A large amount of flue gas causes new pollution. The interest rate of preparing sludge plates is low and sludge cannot be used efficiently, which affects economic benefits and is not suitable for industrial production. What is more important is that the above treatment methods cannot make full use of raw materials for The purpose of making paper, saving costs and improving paper quality

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