Special treatment device for printing and dyeing wastewater

Abstract

The utility model relates to the field of printing and dyeing wastewater treatment equipment, and discloses a special treatment device for printing and dyeing wastewater, which comprises a water collecting tank, a first water outlet and a second water outlet are arranged on the water collecting tank, and the first water outlet is connected with a raw water sedimentation tank through a pipeline. The second water outlet is connected with a physicochemical tank, a three-stage aerobic tank and a hydrolytic bacteria tank through pipelines, the raw water sedimentation tank is connected with a hydrolysis acidification tank through a pipeline, and the hydrolysis acidification tank is connected with the physicochemical tank through a pipeline. According to the special treatment device for the printing and dyeing wastewater, waste ferrous sulfate and iron powder produced by other companies are ingeniously utilized as medicaments to generate OH free radicals with hydrogen peroxide through an innovative FintoN system and an elaborately designed reaction tank, so that efficient organic matter oxidation is realized, and after a series of reactions, the waste ferrous sulfate and iron powder can be recycled. Organic matters in the wastewater are fully decomposed, and then the wastewater enters a spread flow type sedimentation tank for solid-liquid separation, and finally up-to-standard discharge is realized.

Description

Technical Field

[0001] This utility model relates to the field of dyeing and printing wastewater treatment equipment, specifically a special treatment device for dyeing and printing wastewater. Background Technology

[0002] The treatment process for dyeing and printing wastewater refers to the use of physical, chemical, or biological methods to remove or transform pollutants in dyeing and printing wastewater into harmless substances, thereby achieving the goals of purifying water quality, preventing pollution, and protecting the environment. Common dyeing and printing wastewater treatment processes include sedimentation, filtration, adsorption, oxidation, and biodegradation. Depending on different treatment requirements and wastewater characteristics, different combinations of treatment processes can be selected to achieve the best treatment effect.

[0003] Currently, there is no dedicated process system for textile printing and dyeing factories in China. All wastewater treatment processes are adaptable and generic, combining various procedures in a rigid and unpredictable manner. This often leads to a series of problems during operation, resulting in a constant state of firefighting and instability. Therefore, we propose a dedicated wastewater treatment device for printing and dyeing, designed with optimal configurations for each unit and perfectly integrated through interrelationships to achieve the best results and lowest cost. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a special treatment device for dyeing and printing wastewater, which has the advantages of good practicality and low operating cost, thus solving the above problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a special treatment device for dyeing and printing wastewater, comprising a collection tank, a first outlet and a second outlet on the collection tank, the first outlet being connected to a raw water sedimentation tank via a pipe, the second outlet being connected to a physicochemical tank, a three-stage aerobic tank and a hydrolytic bacteria tank via a pipe, the raw water sedimentation tank being connected to a hydrolysis acidification tank via a pipe, the hydrolysis acidification tank being connected to the physicochemical tank via a pipe, the physicochemical tank being connected to a three-stage anoxic tank via a pipe, the three-stage anoxic tank being connected to a three-stage aerobic tank via a pipe, the three-stage aerobic tank being connected to a secondary sedimentation tank via a pipe, and the secondary sedimentation tank being provided with an outlet.

[0008] Preferably, a plate and frame filter press is installed on the left side of the hydrolysis bacterial tank, and the plate and frame filter press is connected to the raw water sedimentation tank, hydrolysis acidification tank, physicochemical tank and secondary sedimentation tank through pipelines.

[0009] Preferably, the water collecting tank is composed of a first water tank and a second water tank, the first water outlet is arranged on the first water tank, the second water outlet is arranged on the second water tank, the first water tank is filled with alkali water discharged by the printing and dyeing workshop, and the second water tank is filled with sewage discharged by the printing and dyeing workshop.

[0010] Preferably, the secondary sedimentation tank is connected with the hydrolysis bacteria tank, the second water tank and the third stage anoxic tank through pipelines.

[0011] (Three) beneficial effects

[0012] Compared with the prior art, the printing and dyeing wastewater special treatment device has the following beneficial effects:

[0013] The printing and dyeing wastewater special treatment device, through the innovative FentoN system, the exquisite design of the reaction tank, the ingenious use of the waste ferrous sulfate and iron powder produced by other companies as medicaments, and the generation of OH free radicals with hydrogen peroxide, realizes efficient oxidation of organic matter, after a series of reactions, the organic matter in the wastewater is fully decomposed, then enters the flow type sedimentation tank for solid-liquid separation, and finally realizes standard discharge, the printing and dyeing wastewater special treatment device not only guarantees the environmental protection index of the effluent, but also reduces manual intervention in the close connection of each unit, further reduces the operation cost, at the same time, the stable running state also completely eliminates the occurrence of environmental accidents, and truly realizes the win-win of economic benefit and environmental benefit. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a processing process system diagram of the printing and dyeing wastewater special treatment device. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0016] Please refer to Figure 1The utility model provides a kind of special processing device of printing and dyeing wastewater, including water collecting pool, first water outlet and second water outlet are opened in the water collecting pool, the first water outlet is connected with raw water sedimentation tank by pipeline, the second water outlet is connected with materialization pool, three-stage aerobic tank and hydrolytic bacteria pool by pipeline, the raw water sedimentation tank is connected with hydrolytic acidification tank by pipeline, the hydrolytic acidification tank is connected with materialization pool by pipeline, the materialization pool is connected with three-stage anoxic tank by pipeline, the three-stage anoxic tank is connected with three-stage aerobic tank by pipeline, the three-stage aerobic tank is connected with two sedimentation tanks by pipeline, the two sedimentation tanks are provided with water outlet, raw water sedimentation tank, this procedure is mainly to the primary precipitation of the pollutants that active sludge adsorbs in large colloidal particles and sewage, sedimentation tank is preferably auxiliary flow type circular sedimentation tank, with mechanical mud scraper, advantage can maximum degree precipitate pollutant, and can discharge the sludge with lower water content, for the most ideal state, three-stage anoxic tank, in 1 stage pool active sludge backflow, materialization pool and two sedimentation tank backflow water are discharged simultaneously, using hydraulic agitation and submersible agitator combination carries out sufficient mixing and forms biological selection area, effectively use this pool, to active sludge is selected, and two sedimentation tank reuse water enters when as nutrient and carbon source for treatment provides energy. After selection, in turn into 2, 3 stage anoxic tank, three-stage aerobic tank 1 stage aerobic tank import is added aforementioned workshop discharged lye, aeration state is strong aeration state, pollutant removal is more than 60%. 2 stage aerobic tank is adjusted to be anoxic state, aeration is micro-aeration, 2 stage provides optimal conditions for total nitrogen and total phosphorus, and 200% sludge backflow is arranged in the tail of 2 stage aerobic tank and enters anoxic tank, 3 stage aerobic tank is middle aeration state, thoroughly oxidizes organic pollutant, high sludge concentration 12g is adopted in aerobic tank, hydrolytic bacteria pool is used to add lye and hydrolyze into carbon source for total nitrogen nutrient solution, and process system diagram is attached.

[0017] The left side of the hydrolytic bacteria pool is provided with a plate and frame machine, which is connected with the raw water sedimentation tank, the hydrolytic acidification tank, the materialization pool and the two sedimentation tanks through pipelines. The plate and frame machine directly dehydrates the sludge by extrusion under a closed condition through a high-pressure pump. The water collecting pool is composed of a first pool and a second pool. The first water outlet is arranged on the first pool, and the second water outlet is arranged on the second pool. The first pool is used to store the lye discharged by the printing and dyeing workshop, and the second pool is used to store the sewage discharged by the printing and dyeing workshop. The water collecting pool is divided into the first pool and the second pool. The lye discharged by the printing and dyeing workshop is stored in the second pool, and the sewage discharged by the printing and dyeing workshop is mixed in the first pool. The active residual sludge is discharged into the first pool to adsorb the pollutants in the sewage by the adsorption property of the active residual sludge. The pollutants can be removed, and the property of the active residual sludge can be changed, which is beneficial to the subsequent sludge dehydration process. The two sedimentation tanks are connected with the hydrolytic bacteria pool, the second pool and the three-stage anoxic tank through pipelines. The two sedimentation tanks are auxiliary flow type sedimentation tanks. The active sludge is precipitated and then enters the first-stage anoxic tank, the hydrolysis tank and the sludge concentration treatment.

[0018] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A special treatment device for printing and dyeing wastewater, comprising a water collecting pool, characterized in that: The first water outlet and the second water outlet are arranged on the water collecting tank, the first water outlet is connected with the raw water sedimentation tank through a pipeline, the second water outlet is connected with the materialization tank, the three-stage aerobic tank and the hydrolysis bacteria tank through a pipeline, the raw water sedimentation tank is connected with the hydrolysis acidification tank through a pipeline, the hydrolysis acidification tank is connected with the materialization tank through a pipeline, the materialization tank is connected with the three-stage anoxic tank through a pipeline, the three-stage anoxic tank is connected with the three-stage aerobic tank through a pipeline, the three-stage aerobic tank is connected with the secondary sedimentation tank through a pipeline, and the secondary sedimentation tank is provided with a water outlet.

2. A special treatment device for printing and dyeing wastewater according to claim 1, characterized in that: A plate-frame machine is arranged on the left side of the hydrolysis bacteria tank, and the plate-frame machine is connected with the raw water sedimentation tank, the hydrolysis acidification tank, the materialization tank and the secondary sedimentation tank through a pipeline.

3. A special treatment device for printing and dyeing wastewater according to claim 1, characterized in that: The water collecting tank is composed of a first water tank and a second water tank, the first water outlet is arranged on the first water tank, the second water outlet is arranged on the second water tank, the first water tank is filled with alkali water discharged by a printing and dyeing workshop, and the second water tank is filled with sewage discharged by the printing and dyeing workshop.

4. The special treatment device for printing and dyeing wastewater according to claim 1 or 3, characterized in that: The secondary sedimentation tank is connected with the hydrolysis bacteria tank, the second water tank and the three-stage anoxic tank through a pipeline.

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