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Combined producing process for realizing zero discharge and comprehensively utilizing in pulp production by using filter film technology

A filter membrane technology and a production process technology, applied in the field of combined production processes, can solve problems such as wasting plant resources, and achieve the effects of saving plant resources, improving economic benefits, and improving corporate economic benefits

Inactive Publication Date: 2007-10-10
葛文宇
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two major problems that need to be solved urgently in the traditional pulp production process of alkali method and sulfite method: one is to waste the plant resources used for papermaking, and only extract and apply the cellulose that accounts for 40% to 50% of the plant raw materials, while the other 50% % of non-cellulosic plant materials are all discarded in wastewater or incinerated as fuel

Method used

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Embodiment Construction

[0019]The specific implementation, requirements, features and effects of the combined production process of the present invention using membrane technology to realize zero discharge and comprehensive utilization of pulp production are described in detail below.

[0020] The present invention uses membrane technology to realize the combined production process of zero discharge and comprehensive utilization of pulp production. Through combined membrane technology, in the process of pulping and papermaking, the waste liquid of each independent water section is purified in stages. The treated purified water is recycled in this section, and no drop is discharged outside to achieve zero discharge. After being treated by the filter membrane, all the organic compounds contained in the waste liquid are separated by the filter membrane, and then extracted from it. The compound of lignin and hemicellulose is further processed to achieve comprehensive utilization and improve economic benef...

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Abstract

The present invention relates to a combined production process capable of utilizing filter membrane technique to implement zero discharge of pulp production and comprehensive utilization. It is characterized by that said production process can utilize filter membrane technique to make waste liquor produced in every independent water-using work section in the course of pulp production undergo the process of purification treatment, and make the purified water obtain circular utilization so as to implement zero discharge of waste liquor.

Description

technical field [0001] The invention relates to a pulp manufacturing process, in particular to a combined production process for realizing zero discharge and comprehensive utilization of pulp production using membrane filtration technology Background technique [0002] At present, there are always two major problems in the pulp and paper industry in the world that need to be solved urgently: one is the problem of wastewater pollution. The black waste liquid produced in the traditional alkali method and sulfite pulping and pulping section is mainly the degradation products of lignin and carbohydrates, such as vulcanized lignin, dimethyl sulfide, formic acid alcohol, dimethyl disulfide and other organic compounds, these organic compounds will emit a foul smell, causing COD in the waste liquid cr (chemical oxygen demand) and BOD 5 (Biochemical Oxygen Demand) component content is very high, in the pulp bleaching section, especially in the waste liquid bleached with chlorine sa...

Claims

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Application Information

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IPC IPC(8): D21C11/02B01D61/00C02F1/00
Inventor 葛文宇
Owner 葛文宇
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