Modification and reuse production method for floatation filter-pressed sludge of white manila board

A production method and white-on-grey technology, which are applied in the fields of sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. The effect of enhancing the adsorption performance, improving the utilization rate and improving the adsorption performance

Active Publication Date: 2016-12-07
LIANSHENG PAPER IND LONGHAI
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Problems solved by technology

[0002] The output of modern large-scale coated gray-bottomed whiteboard paper machines is large, and the surface layer DIP (office waste paper deinking line) flotation section, the bottom layer ONP (old newspaper deinking line) flotation section, and the flotation produced by DIP white water air flotation purification section are used. The amount of sludge is large, with a daily output of 2,500 tons. The coated gray-bottomed whiteboard production line produces about 80 tons of flotation sludge per day. The main components of the flotation sludge are fine fibers, fillers, and inks. The flotation sludge passes through the sewage plant It is not conduc

Method used

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Example Embodiment

[0018] In order to describe the technical content, structural features, achieved objects and effects of the technical solutions in detail, the following detailed description is given in conjunction with specific embodiments.

[0019] In the present embodiment, the main technical circuit of the present invention is a kind of coating gray-bottomed whiteboard paper flotation filter press sludge modification and reuse production method as follows:

[0020] Impurity removal -> activation adjustment -> retention and drainage aid -> papermaking, as follows:

[0021] 1. Remove impurities:

[0022] Add white water to the sludge to adjust the concentration at room temperature. The sludge concentration is detected by the sludge concentration transmitter, and the concentration is controlled at 4% to 6%. This step is to ensure the uniformity of the sludge concentration, because the sludge concentration Excessive fluctuation will cause paper breakage or unqualified paper quality.

[0023]...

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Abstract

The invention discloses a modification and reuse production method for floatation filter-pressed sludge of a white manila board and belongs to the field of sludge reuse. The modification and reuse production method for the floatation filter-pressed sludge of the white manila board includes the steps that the sludge is screened, heavy slag is removed, and light slag is recycled; activation adjusting is carried out, wherein poly aluminum chloride is added into the sludge, and anionic trash is removed; lotus powder is added into the sludge; retention and drainage are carried out, wherein Hansenula sinensis, poly aluminum chloride and cationic polyacrylamide are added into the sludge, and the sludge is dewatered and conditioned; paper making is carried out, wherein the sludge and pulp needing to be made into paper are mixed according to the ratio of 3:50, and paper is made with the pulp. In the whole process, the sludge is purified, residual fibers in the sludge are utilized to the maximum degree, and environmental friendliness and resource utilization maximization are achieved.

Description

technical field [0001] The invention relates to the field of sludge reuse, in particular to a production method for modifying and recycling flotation filter press sludge coated with gray-bottomed whiteboard. Background technique [0002] The output of modern large-scale coated gray-bottomed whiteboard paper machines is large, and the surface layer DIP (office waste paper deinking line) flotation section, the bottom layer ONP (old newspaper deinking line) flotation section, and the flotation produced by DIP white water air flotation purification section are used. The amount of sludge is large, with a daily output of 2,500 tons. The coated gray-bottomed whiteboard production line produces about 80 tons of flotation sludge per day. The main components of the flotation sludge are fine fibers, fillers, and inks. The flotation sludge passes through the sewage plant It is not conducive to environmental protection to form dried sludge after treatment or to form filter residue after ...

Claims

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Application Information

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IPC IPC(8): C02F11/00
CPCC02F11/00
Inventor 王贵敏陈光军袁柳
Owner LIANSHENG PAPER IND LONGHAI
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