Environmental protection type printing and dyeing wastewater treatment process and environmental protection type printing and dyeing wastewater treatment apparatus

Abstract

The invention discloses an environmental protection type printing and dyeing wastewater treatment process. According to the process, printing and dyeing sewage is introduced into a regulating pool, anacidic solution is poured into the regulating pool, complete mixing is performed by a stirring rod, an alkaline solution is poured into the regulating pool, and secondary stirring is performed, suchthat the pH value of the printing and dyeing sewage is stabilized at 6-9; first-stage filtration is performed, and the printing and dyeing sewage is poured into the water collecting box of a treatmentapparatus while a flocculating agent is added, such that the suspended matter in the printing and dyeing sewage is condensed; the suspended matter in the printing and dyeing sewage is separated through a water filtering groove through the water separation groove plate in the water collecting box, such that the suspended matter remains in the water separation groove plate; and the sewage falls into the bottom portion of the water collecting box, and is filtered by a first filtering plate and a second filtering plate, and the filtered water is discharged from the water collecting box. Accordingto the present invention, with the process and the apparatus, the application range of the treatment apparatus is increased, the fixed diameter can be adjusted, the treatment efficiency is improved,and the combined fixed structure is achieved so as to bring good experience.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to sewage treatment equipment, and more particularly to an environment-friendly printing and dyeing wastewater treatment process and treatment device. Background technique [0002] Textile printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, high alkalinity, and large changes in water quality. It is one of the difficult industrial wastewaters to treat. Impurities, sand substances, inorganic salts, etc., the main methods for the treatment of printing and dyeing wastewater are physicochemical, biochemical, chemical and a combination of several processes, and the pretreatment in wastewater treatment is mainly to improve the quality of wastewater. Remove suspended solids and impurities that can be directly settled, adjust the quality and quantity of wastewater, reduce the temperature of wastewater, etc., improve the o...

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Problems solved by technology

[0003] The existing printing and dyeing wastewater treatment device has certain disadvantages in the process of use. The traditional printing and dyeing wastewater treatment device flows through the water itself to filter and discharge the water body. Affected by the flow rate of the water body, the treatment of the printing and dyeing wastewater treatment device is reduced to a certain extent. efficiency, and the traditional printing and dyeing wastewater treatment device adopts a threaded butt joint fixed structure, which affects the docking diameter and docking speed of the printing and dyeing wastewater treatment device to a certain extent, which increases the difficulty of installation of the printing and dyeing wastewater treatment device. The traditional printing and dyeing wastewater treatment device adopts an integrated fixed The structure increases the difficulty of installation of the printing and dyeing wastewater treatment device, which is not convenient for users to maintain and operate, and brings certain adverse effects to users

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