Sludge recovery and paper making method

A technology of sludge and compound microbial bacteria, applied in the field of papermaking, can solve problems such as environmental pollution, and achieve the effects of environmental protection, high dehydration efficiency and rational utilization

Active Publication Date: 2016-10-12
山鹰华南纸业有限公司
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Problems solved by technology

[0002] More and more paper mills are beginning to use waste paper to make paper. Although waste paper is used reasonably, waste paper contains a lot of garbage. The process of making paper from waste paper will produce a lot of waste water, waste residue, and waste water. Containing a large amount of mud, sand and a large number of bacterial derivatives, it is called sludge. The current treatment methods for sludge are generally backfilling or incineration, which causes great pollution to the environment.

Method used

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Embodiment Construction

[0019] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0020] see figure 1 , first explain the English that will appear:

[0021] PAM: It is the abbreviation of Polyacrylamide, and the Chinese name is polyacrylamide. PAM is a non-ionic polymer flocculant commonly used in China, with a molecular weight of 1.5 million to 20 million and a commercial concentration of 8%. The organic polymer flocculant has a huge surface adsorption effect by forming larger flocs between particles.

[0022] In this embodiment, the steps are as follows:

[0023] S101: adding PAM to the sludge;

[0024] Add PAM to the sludge, stir well, and place it at room temperature for 4 hours, which can effectively dehydrate the sludge before the sludge enters the filter press. The mud cake is thicker, the dehydration e...

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Abstract

The invention discloses a sludge recovery and paper making method, belonging to the field of paper making. The method comprises the following steps: adding PAM (polyacrylamide) into sludge, and dewatering the sludge; filtering the dewatered sludge with a pressurized screen; stirring the sludge at the rotation speed of 1400-1500 r/min; adding composite microbes into the sludge, and carrying out fermentation; after the fermentation, filtering out the water, adding white water into the fermented sludge to regulate the concentration, detecting the sludge concentration by a sludge concentration transducer, and controlling the concentration at 4-6%; after regulating the concentration of the sludge, adding chemical raw materials (PAM, ammonium sulfate and sodium bentonite) into the sludge; after the chemical reaction, dissolving the sludge in water to obtain a suspension; and mixing the sludge with the pulp for paper making, and carrying out paper making. The sludge is activated after being sufficiently treated, and thus, can be better adsorbed to the fibers; and the sludge is added into waste paper pulp to make paper, thereby rationally utilizing the sludge and greatly protecting the environment.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a papermaking method for recycling sludge. Background technique [0002] More and more paper mills are beginning to use waste paper to make paper. Although waste paper is used reasonably, waste paper contains a lot of garbage. The process of making paper from waste paper will produce a lot of waste water, waste residue, and waste water. Containing a large amount of mud, sand and a large number of bacterial derivatives, it is called sludge. The current treatment methods for sludge are generally backfilling or incineration, which causes great pollution to the environment. Contents of the invention [0003] For this reason, it is necessary to provide a method for sludge recycling and papermaking. After a series of treatments such as pressure filtration, fermentation and deodorization, and white water concentration adjustment are performed on the sludge generated in the process of making...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F11/00D21H11/14D21H17/01C02F103/28
CPCC02F1/001C02F1/52C02F3/34C02F9/00C02F11/00C02F2103/28C02F2301/08D21H11/14D21H17/01
Inventor 陈权荣柯先锋陈祥发王成甫朱琦吴齐清
Owner 山鹰华南纸业有限公司
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