Recombinant decorative material production waste water treatment process

Abstract

The invention discloses a recombinant decorative material production waste water treatment process, which comprises the following steps in turn: pre-treating bleaching water and dyeing water, introducing the pretreated bleaching and dyeing water into an iron carbon tower, performing the coagulating sedimentation and mixing the bleaching and dyeing water with panel cleaning water; delivering the mixed waste water into a hydrolysis acidification tank by using a lifting pump to perform anaerobic treatment; delivering the effluent of the hydrolysis acidification tank to a secondary contact oxidization tank for aerobic treatment; delivering the effluent of the aerobic tank into a secondary sedimentation tank for sedimentation, concentrating sludge and returning part of effluent to the hydrolysis acidification tank; and introducing the effluent of the secondary sedimentation tank to a floataion tank to perform further decoloration and discharging the waste water reaching discharging standards. The invention also comprises the iron carbon tower designed according to process requirements. The iron carbon tower is formed by a round steel tank body, the top part of the tank body is sealed and is provided with a feed inlet and an exhaust hole, waste water enters the tank body from a water inlet, and the waste water is discharged from a water outlet after complete reaction. The process has the advantages of low treatment cost, good decoloration effect, small floor area, small single investment, stable operation and the like. The process was successfully used by a recombinant decorative material manufacturer in Jiangsu province and passed the local environmental protection inspection and acceptance.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to a wastewater treatment process for recombined decorative material production. Background technique [0002] The recombined decorative material is made of fast-growing artificial forest wood, which is cut into veneers by rotary cutting or slicing, and then bionically processed into new furniture and architectural decoration materials with precious texture and color. The waste water generated in the production process of recombined decorative materials mainly comes from the veneer bleaching, cleaning and dyeing sections. Lignin and wood acid. [0003] Printing and dyeing wastewater treatment methods include physical and chemical methods, biochemical methods, electrochemical methods, etc. The treatment of printing and dyeing wastewater mostly adopts the combined process of "physical and chemical pretreatment-biochemical treatment-re-physical and chemical treatment" with biochemica...

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Problems solved by technology

[0007] At present, these treatment processes mainly have shortcomings such as high operating costs and unstable operating effects, and they are all processes for printing and dyeing wastewater

In the wastewater treatment process of recombined decorative wood production, no matter which of the above methods is adopted, the discharge standard cannot be met. At present, there is no water treatment process and equipment that is really suitable for the production of recombined decorative wood production wastewater.

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