A zero discharge process of waste paper or raw paste paper wastewater reuse process
A paper-making wastewater and zero-discharge technology, applied in papermaking, textiles and papermaking, water/sewage treatment, etc., can solve the problems of many unit facilities, reuse of sediment for production, and many processes, so as to avoid pollution and benefit the environment Protect and realize the effect of zero discharge
Active Publication Date: 2014-10-08
钟立福
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Problems solved by technology
The "zero discharge process of papermaking wastewater" involves the process of paper machine wastewater treatment and reuse, including the separation of concentrated white water and dilute white water. Pool filtration and radial flow sedimentation tank sedimentation process have many recycling processes, involve many unit facilities, and have high manufacturing costs, and only involve paper machine wastewater treatment and reuse in papermaking wastewater. The sediment sludge needs to go through the process of making the filter residue into a cake, and the treatment process cannot directly reuse the sediment for production
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[0037] See attached figure 1 , with a total waste water collection tank and a waste water delivery member 1 (such as a pipeline or other structural form of delivery member); the pulping wastewater generated by the pulper enters the total waste water collection tank through the waste water delivery member 1; the pulp screen produced by pulp screening Wastewater enters the total waste water collection pool through the waste water conveying member 1; forming waste water generated by paper sheet forming enters the general waste water collection pond through the waste water conveying member 1; pressing waste water generated by paper pressing enters the general waste water collection pond through the waste water conveying member 1 The cleaning wastewater produced by cleaning the papermaking felt 2 enters the total wastewater collection tank through the conveying member 1; the first wastewater recycling pump 3 is provided, and the first wastewater recycling pump 3 and the recycling pi...
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The invention relates to a zero discharging and recycling technology for waste paper or raw stock board papermaking wastewater. Paper sheet forming wastewater enters a main wastewater collection tank by a forming wastewater tank through a wastewater conveying construction member, paper pulp screening wastewater enters the main wastewater collection tank by a screening wastewater tank through the wastewater conveying construction member, paper sheet squeezing wastewater enters the main wastewater collection tank by a squeezing wastewater tank through the wastewater conveying construction member, carpet washing wastewater enters the main wastewater collection tank by the squeezing wastewater tank through the wastewater conveying construction member, and repulping wastewater enters the main wastewater collection tank by a repulping wastewater tank through the wastewater conveying construction member; a first wastewater reusing pump (3) is used for reusing the wastewater in the main wastewater collection tank in a pulper; and part of wastewater in the forming wastewater tank is reused for dilution of paper pulp, part of wastewater in the screening wastewater tank is reused in the pulper, a second waster wastewater reusing pump (6) is used for reusing part of wastewater in the squeezing wastewater tank for cleaning papermaking felts, an aerating apparatus (4) is arranged according to the zero discharging and recycling technology, and the zero discharging and recycling technology has the characteristics of zero discharging and total recovery of wastewater and reduction of construction cost and operating cost.
Description
technical field [0001] The invention relates to a zero-discharge recycling process for waste paper and papermaking wastewater, in particular to a zero-discharge recycling process for waste paper or raw pulp boards for producing firecrackers, firecrackers and lead wires, etc., and can also be applied to waste paper or raw pulp boards Production of corrugated paper, yellow cardboard, kraft paper and other papermaking wastewater zero discharge recycling process. Background technique [0002] Waste paper papermaking wastewater includes pulping wastewater, pulp screening wastewater, paper machine operation wastewater, paper machine operation wastewater is also called paper machine wastewater, paper machine wastewater includes paper forming wastewater, press wastewater, and cleaning wastewater for cleaning felts. The current treatment process for treating waste paper and papermaking wastewater uses air flotation method after dosing, or after sedimentation treatment, and then throu...
Claims
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IPC IPC(8): D21C11/00C02F1/24C02F1/00
Inventor 钟立福
Owner 钟立福