A closed pipeline system for corrugated paper production and water circulation

Abstract

A corrugated paper production and water circulation closed pipeline system comprises a pulping system, a papermaking system and a waste water treatment system. The waste water treatment system comprises a pulping section waste water treatment system and a papermaking section waste water treatment system. The pulping section waste water treatment system and the papermaking section waste water treatment system are communicated with the pulping system and the papermaking system through pipelines respectively to form a closed waste water treatment circulating pipeline. The pulping system comprises a crushing system, a high-concentration screening system, a low-concentration screening system, a pressure screening system and a concentrating system. The papermaking system comprises a pre-papermaking pool, a high-position box, a net portion, a squeezing portion, a drying portion, a rewinding and cutting device and a hydraulic paper shredder which are sequentially connected, wherein broken paper produced in the drying portion and the rewinding and cutting device is crushed through the hydraulic paper shredder. The papermaking section waste water treatment system comprises a papermaking section waste water circulating system and a shallow-layer air floatation waste water treatment system. By means of the corrugated paper production and water circulation closed pipeline system, closed and circulated utilization of papermaking waste water is achieved; the corrugated paper production and water circulation closed pipeline system has an obvious effect on improving water resource environmental conditions.

Description

technical field [0001] The invention belongs to the technical field of papermaking, in particular to a corrugated paper production and water circulation closed pipeline system. Background technique [0002] The papermaking industry is the main industry of our country. It is also the basic industry of the national economy. It is closely related to social development and people's life. Due to the requirements of the papermaking process itself, the consumption of water resources is quite huge. At the same time, the pollution of water resources is also huge. Relatively serious, the waste water produced in the papermaking process has become one of the main factors of water pollution in my country, which has been plagued by the development of my country's papermaking industry. Controlling wastewater discharge, reducing environmental pollution, and finally realizing zero discharge is the only way for our current paper industry. At present, the output of my country's corrugated base...

AI Technical Summary

Problems solved by technology

[0009] The waste water produced in the above-mentioned corrugated paper production process is directly discharged after simple treatment, which will not only bring great harm to the environment, but also cannot effectively recycle the useful substances in the waste water. A large number of fibers will be discharged into nature together with wastewater, which will not only pollute the environment, but also cause a waste of resources

[0010] In addition, in the above-mentioned corrugated paper production process, the wastewater generated in the pulping section and the papermaking section is generally treated and discharged separately, and a closed wastewater circulation pipeline cannot be formed, which is not conducive to the centralized treatment of wastewater

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