Papermaking sludge paperboard and preparation thereof

Abstract

The invention relates to the field of papermaking, and discloses a sludge paperboard and preparation thereof. The papermaking sludge paperboard is prepared from papermaking sludge and short fibers serving as raw materials. By breaking through sludge papermaking technology and solving the strength problem of the sludge paperboard, 100 percent of papermaking sludge is recycled and the pollution problem of spinning waste, namely the short fibers is partially solved; and the formed sludge paperboard product can replace a thick paperboard and has obvious cost advantage.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a sludge paperboard and its preparation. Background technique [0002] With the continuous improvement of people's living standards, the paper industry has developed very rapidly. While bringing economic benefits, it has produced serious environmental pollution problems. The water pollution of the paper industry ranks among the best in various industries; waste gas, Pollution from solid waste and noise is also serious. [0003] If the wastewater from the papermaking industry is discharged into rivers without treatment, the organic matter in the wastewater will ferment, oxidize, and decompose, consuming oxygen in the water, causing aquatic organisms such as fish and shellfish to die due to hypoxia; some fine fibers are suspended in the water , it is easy to block the gills of the fish, and also cause the death of the fish; the bark chips, wood chips, grass clippings, rotten grass, and ...

AI Technical Summary

Problems solved by technology

This treatment method has three major disadvantages: 1. It needs to occupy a large area of ​​land for stacking and landfilling; 2. The papermaking sludge is alkaline, which makes the land salinized and causes environmental pollution; 3. Shipping to landfill It requires a lot of transportation and labor costs, which greatly increases the operating costs of enterprises

[0009] At present, the treatment methods of papermaking sludge in the industry are mainly concentrated in landfill and incineration. The landfill method of foreign transportation has three major disadvantages: 1. It needs to occupy a large area of ​​land for stacking and landfill; 2. Papermaking sewage The mud is alkaline, which makes the land salinized and causes environmental pollution; 3. Outbound landfill requires a lot of transportation and labor costs, which greatly increases the operating costs of enterprises

The two methods of landfill and incineration will cause great pollution to the environment. Although some people have proposed to use papermaking sludge to make industrial adhesives, bricks, and organic fertilizers, they have not achieved results and there is no market. application

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