Clean production method of corrugated medium paper with zero sludge discharge in pulping process

Abstract

The invention discloses a clean production method of corrugated medium paper with zero sludge discharge in a pulping process, which comprises the conventional papermaking steps such as a repulping step, a high-concentration filter pressing step, a low-concentration filter pressing step, a flotation deinking step, a low-concentration desanding step, a precipitation step, a pulp mixing and proportioning step, a papermaking step, a squeezing step and a drying step. The method further comprises sludge treatment steps such as sludge drying and disinfection, burdening and forming. In the production process of corrugated medium paper and corrugated paper, sludge generated in the waste paper papermaking process does not need to be purified, an environment-friendly degradable clay-sculpture composite supporting plate can be obtained by the burdening step and the forming step only through the sludge dewatering step and the sludge drying and disinfecting step, and the production process is clean and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of a production method for remaking paper using waste paper, in particular to a clean production method for corrugated medium paper and corrugated paper with zero sludge discharge in the pulping process. Background technique [0002] At present, manufacturers of corrugated paper, including its corrugated core paper, use waste paper such as waste paper boxes and waste cardboard as raw materials for papermaking. Manufacturers of corrugated paper no longer use raw wood pulp obtained from wood as raw materials for papermaking. The first is to respond to the national The policy is to recycle waste paper, so that waste paper can be recycled, energy saving and environmental protection, and the second is to reduce the cost of papermaking. [0003] However, in the production process of using waste paper to produce corrugated medium paper and further making it into corrugated paper, a large amount of sludge will be ge...

AI Technical Summary

Problems solved by technology

However, with the promotion of environmental protection and clean production, the traditional sludge treatment methods are obviously not suitable. However, in the process of sludge environmental protection treatment, the cost of environmental protection treatment If the sludge is refined or impurity-removed before being applied, it will make the sludge treatment cost and application cost very high, and the sludge treatment cost is limited based on the high sludge treatment cost. The application of mud also limits the promotion of the market, so it is necessary to improve