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Decoloring method for paper-making middle section water

A mid-section water and water body technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, oxidized water/sewage treatment, etc., can solve problems such as no technical solution proposed, achieve good disinfection effect, ingenious design ideas, preparation handy effect

Active Publication Date: 2005-03-02
高唐绿荫环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This article only deals with the decolorization of mid-stage wastewater in terms of theory and application, and does not propose specific technical solutions to solve related problems

Method used

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  • Decoloring method for paper-making middle section water
  • Decoloring method for paper-making middle section water

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Experimental program
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Effect test

Embodiment 1

[0048] Introduce 1000 tons of biochemically treated mid-section water (COD is 330mg / L, chromaticity 64 times) into the first-level folded plate reaction tank, and add 15kg of O in the tank. 3 , reacted for 2 hours, the water decolorized by the first stage entered the first stage stabilization pond, left standing for 48 hours, the effluent chromaticity was 32 times, entered the second stage folded plate reaction tank, and added 5kg of ClO to the second stage folded plate reaction tank 2 , reacted for 1.5 hours, then entered the secondary stabilization pond, left standing for 48 hours, the effluent color was 16 times, entered the tertiary reactor, and added 100kg PAFC (PAFC-B 1 type, Changzhou Zhenbang Chemical Manufacturing Co., Ltd.), after 15 minutes, add 1kg of PAM (molecular weight 18 million, anionic type, Yixing Angel Synthetic Chemical Co., Ltd.), react for 30 minutes, enter the sedimentation tank, the water chromaticity is 8:00 , enter the tertiary stabilization pond, s...

Embodiment 2

[0050] Introduce 1000 tons of biochemically treated mid-section water (COD is 350mg / L, chromaticity 64 times) into a first-level folded plate reaction tank, and add 20kg of O in the tank. 3 , reacted for 1 hour, the water decolorized by the first stage entered the first stage stabilization pond, left standing for 50 hours, the effluent chromaticity was 32 times, entered the second stage folded plate reaction tank, and added 10kg of ClO to the second stage folded plate reaction tank. 2 , react for 1 hour, then enter the secondary stable pond, stand for 48 hours, the effluent color is 16 times, enter the third-level reactor, add 200kg PAFC (PAFC-B 2 type, Changzhou Zhenbang Chemical Manufacturing Co., Ltd.), after 20 minutes, add 2kg of PAM (molecular weight 15 million, anionic type, Yixing Angel Synthetic Chemical Co., Ltd.), react for 22 minutes, enter the sedimentation tank, the water chromaticity is 8:00 , enter the tertiary stabilization pond, stay for 18 hours, and get a c...

Embodiment 3

[0052] Introduce 1000 tons of biochemically treated mid-section water (COD is 310mg / L, chromaticity 64 times) into a first-level folded plate reaction tank, and add 19kg of O in the tank. 3 , reacted for 1 hour, the decolorized water entered the first-level stabilization pond, left standing for 36 hours, the effluent color was 32 times, entered the second-level folded plate reaction tank, and added 7kg of ClO to the second-level folded plate reaction tank. 2 , reacted for 2 hours, then entered the secondary stabilization pond, left standing for 55 hours, the effluent color was 16 times, entered the tertiary reactor, added 160kgPAC (first-class product, Changzhou Zhenbang Chemical Manufacturing Co., Ltd.), 16 minutes later, Add 1.5kg of PAM (molecular weight 18 million, anionic type, Gongyi Lanxing Water Purification Material Factory), react for 22 minutes, enter the sedimentation tank, the water chromaticity is 8, enter the tertiary stabilization pond, stay for 18 hours, that i...

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Abstract

The present invention discloses one kind of papermaking intermediate water decolorizing method, and the decolorizing method is one two stage process includes oxidizing decolorizing and flocculating decolorizing. The decolorizing method has obvious decolorizing effect, low running cost, no yellowing, high treating capacity, easy preparation of the decolorizing agent and other advantages. The present invention has obvious flocculating decolorizing effect and excellent sterilizing effect, and the treated water may meet the requirement for irrigation.

Description

Technical field: [0001] The invention relates to a method for decolorizing mid-stage water in papermaking, in particular to a method for decolorizing biochemically-treated mid-stage water produced in papermaking. Background technique: [0002] The entire production process of the pulp and paper industry requires a large amount of water, which collects a large amount of industrial harmful substances during the production process, which cannot be directly used, and directly discharged will pollute the environment. Recycling and reuse of middle water has significant economic and social value and determines the survival and development of papermaking enterprises. [0003] A large number of paper-making enterprises are researching and trying to recycle, treat and reuse water in the production process. Among them, after the industrial wastewater produced in the papermaking and pulping process has been treated and reaches the discharge standard, there are still some problems in it...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/76C02F1/78C02F9/04
Inventor 曹光春杨吉慧郭良进李晓光孙冰娜
Owner 高唐绿荫环保科技有限公司
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