Integrated microbial treatment system for printing and dyeing wastewater

Abstract

The present application relates to sewage treatment technical field, specifically to a kind of printing and dyeing sewage microbial integrated treatment system. The efficiency is low, and energy consumption is big to simply use physical method, chemical method and biological method to carry out treatment to dyeing wastewater. In view of the above problems, the present application provides a kind of microbial filter device, the structure and position design of inner cylinder and outer cylinder and horizontal partition plate, the design can significantly expand the area and type of microbial filler filling in limited space, obtain higher sewage treatment efficiency, the device has stronger processing capacity and purification effect to difficultly degradable organic matter printing and dyeing sewage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to a microbial integrated treatment system for printing and dyeing wastewater. BACKGROUND

[0002] The printing and dyeing industry, as an important branch of the textile industry, not only provides people with colorful textiles, but also produces a large amount of printing and dyeing wastewater. These wastewaters usually contain complex dyes, additives and various chemical additives, and are characterized by high colority, high COD concentration, poor biodegradability and strong toxicity, which seriously pollute water bodies.

[0003] Traditional printing and dyeing wastewater treatment methods mainly include physical method, chemical method and biological method. Although the physical method such as flocculation and sedimentation is simple and easy to operate, it cannot completely remove dissolved organic matter in water; the chemical method such as oxidation method has strong oxidation decomposition ability, but has high investment and operation cost and the problem of secondary pollution; the biological method is environmentally friendly and economical, but has limited removal effect on dyeing and other difficult-to-degrade organic matters. At present, a single treatment technology cannot meet the requirements of printing and dyeing wastewater treatment in terms of effect and economy, so it is urgent to develop an integrated and high-efficiency printing and dyeing wastewater treatment system.

[0004] An integrated printing and dyeing wastewater treatment system can combine multiple treatment technologies, comprehensively utilize the advantages of physical, chemical and biological methods, improve treatment efficiency, and reduce operating costs. However, the integrated system in the prior art still has many problems to be overcome in terms of stability, treatment efficiency and cost control. In addition, the traditional treatment system often needs a large amount of chemical agents, which not only increases the treatment cost, but also increases the risk of secondary pollution. Therefore, for the field of printing and dyeing wastewater treatment, it has great practical application value and wide market prospect to develop a biological treatment integrated system that can not only ensure efficient removal of harmful substances, but also realize low energy consumption, low cost and low emission. SUMMARY

[0005] The problem existing in the prior art is that the physical method, the chemical method and the biological method are used alone to treat dyeing wastewater, which has low efficiency and high energy consumption. In view of the above problems, the present application provides a microbial filtration device, which comprises an inner cylinder and an outer cylinder, the inner cylinder is vertically fixed and placed in the inner cylinder, the inner diameter of the outer cylinder is greater than the outer diameter of the inner cylinder, the height of the outer cylinder is greater than the height of the inner cylinder, the top of the outer cylinder is communicated with the top of the inner cylinder, and the bottom is not communicated.

[0006] The outer cylinder and the inner cylinder form a containing cavity, the outer cylinder bottom side wall is provided with a water inlet, the water inlet and the containing cavity are communicated with each other, the bottom of the containing cavity is vertically fixedly provided with a fixed rod, the fixed rod is sequentially provided with a plurality of horizontal partitions from bottom to top, the horizontal partitions separate the containing cavity into a plurality of treatment zones and an overflow zone along the vertical direction, the treatment zones are filled with suspended microbial fillers, the treatment zones and the overflow zone are communicated with each other through the openings on the surface of the horizontal partitions, and the treatment zone adjacent to the overflow zone is provided with a first micro-power oxygen exposure device on the horizontal partition thereof, and the first micro-power oxygen exposure device monitors and adjusts the concentration of dissolved oxygen around the horizontal partition in real time.

[0007] The inner cylinder is vertically fixedly provided with a filler frame, the surface of the filler frame is circumferentially wrapped with carbon fiber cloth biological fillers, the carbon fiber cloth biological fillers extend along the axial direction of the inner cylinder, the bottom side wall of the inner cylinder is provided with a water outlet, and the bottom of the inner cylinder is further provided with a second micro-power oxygen exposure device.

[0008] Preferably, the fixed rod and the horizontal partition are screw-fixedly connected, and the horizontal partition can be axially displaced along the fixed rod. By changing the axial position of the horizontal partition, the volume of the space sandwiched by the horizontal partition is changed, and then the volume ratio of each treatment zone is changed. According to the situation of the main pollutants in different printing and dyeing wastewater, the size of the biological treatment zone corresponding to the specified pollutant is adjusted in time.

[0009] Preferably, the horizontal partition has three, namely a first horizontal partition, a second horizontal partition and a third horizontal partition, the horizontal partitions are spaced apart along the vertical direction in the containing space, the containing cavity is separated into three treatment zones and an overflow zone along the vertical direction, and the three treatment zones are a first treatment zone, a second treatment zone and a third treatment zone. The third treatment zone is provided with a first micro-power oxygen exposure device on the horizontal partition thereof.

[0010] Preferably, the top of the filler frame protruding from the inner cylinder is provided with a horizontal plate. The horizontal plate is used to fix a vibration motor, and the vibration motor is started during the wastewater treatment process, so that the filler frame vibrates. Experiments show that the micro-vibration can maintain the appropriate thickness of the biofilm, reduce the situation that the mass transfer between the microorganisms and the printing and dyeing wastewater is blocked due to the over-thickness of the biofilm, and reduce the treatment efficiency.

[0011] A printing and dyeing wastewater microbial integrated treatment system adopts the above-mentioned microbial filter device, and the structure thereof comprises a filter partition.

[0012] The filter partition extends circumferentially to form a partition filter zone, the partition filter zone can preliminarily filter the printing and dyeing wastewater, remove larger impurities in the wastewater, and improve the subsequent treatment efficiency and reduce the operation and maintenance cost.

[0013] The grille filtering area is provided with a baffling adjusting area, a microorganism filtering device, a sedimentation area and a water outlet disinfection pool connected in sequence after the grille filtering area,

[0014] The fluid flow path in the baffling adjusting area is disc-shaped.

[0015] Preferably, the baffling adjusting area comprises a water inlet, a flow outlet and a closed flow chamber, the water inlet and the flow outlet are communicated with the side wall of the front and rear end face of the flow chamber respectively, a plurality of upper baffles and a plurality of lower baffles are horizontally spaced apart on the upper and lower surfaces of the inner wall of the flow chamber along the axial direction thereof, the upper baffles and the lower baffles are distributed in parallel and spaced apart alternately, one end of the upper baffles and the lower baffles is fixedly connected with the inner wall of the flow chamber, and the other end is not in contact with the inner wall of the flow chamber, and the fluid can only flow forward disc-shapedly along the gap between the upper end of the lower baffle and the flow chamber and the gap between the lower end of the lower baffle and the flow chamber in turn.

[0016] Preferably, the printing and dyeing wastewater microorganism integrated treatment system further comprises a remote control system, the remote control system comprises a temperature control system and a pH control system, and the remote control system can monitor and adjust the temperature and pH in the microorganism filtering device in real time through the temperature control system and the pH control system.

[0017] The present application has the following advantages:

[0018] (1) The microorganism filtering device in the present application is a multi-stage microorganism treatment device, the structure and position of the inner cylinder, the outer cylinder and the horizontal partition plate divide the microorganism filtering device into an anoxic area and an aerobic area which are communicated with each other along the longitudinal direction, which can significantly expand the area and types of microorganism filler filling in a limited space, and obtain higher wastewater treatment efficiency, and the device has stronger treatment capacity and purification effect on difficult-to-degrade organic printing and dyeing wastewater.

[0019] (2) The structure and position of the inner cylinder, the outer cylinder and the horizontal partition plate in the microorganism filtering device divide the microorganism filtering device into an anoxic area and an aerobic area which are communicated with each other along the longitudinal direction, so that the dominant microorganism flora in the inner cylinder and the outer cylinder can coexist, the inner cylinder and the outer cylinder can realize efficient biodegradation of specific pollutants respectively, and the stability of the microorganism filtering device in the wastewater treatment process is significantly improved.

[0020] (3) The microbial filtering device in the application is a multi-stage microbial treatment device, the inner cylinder, the outer cylinder and the horizontal partition plate are designed in structure and position, two anoxic zones and two aerobic zones are sequentially divided along the longitudinal direction of the microbial filtering device, the design makes the land area of the printing and dyeing wastewater microbial integrated treatment system smaller, the energy consumption and cost lower, and the printing and dyeing wastewater microbial integrated treatment system is very suitable for centralized treatment of small and medium-sized printing and dyeing wastewater;

[0021] (4) The operation parameters of the printing and dyeing wastewater microbial integrated treatment system can be automatically adjusted through the remote control room, without manual on-site operation, and the labor cost is significantly reduced;

[0022] (5) The printing and dyeing wastewater microbial integrated treatment system uses the biofilm method to treat printing and dyeing wastewater, can effectively remove toxic and harmful substances in the wastewater in a low-carbon way, and plays a positive promoting role in improving the environmental quality;

[0023] (6) The printing and dyeing wastewater microbial integrated treatment system has the characteristics of good environmental protection performance, high treatment efficiency, simple operation and low cost, and can meet the strict requirements of modern printing and dyeing industry on wastewater treatment. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The printing and dyeing wastewater microbial integrated treatment system provided by the application is a process schematic diagram of wastewater treatment.

[0025] Figure 2 The structure schematic diagram of the microbial filtering device provided by the application.

[0026] Figure 3 The top view of the microbial filtering device.

[0027] Figure 4 : Figure 3 The sectional structure schematic diagram of the microbial filtering device in the A-A direction.

[0028] Figure 5 The structure schematic diagram of the baffling regulation zone in the printing and dyeing wastewater microbial integrated treatment system provided by the application.

[0029] In the figure: 1. outer cylinder, 1-2. hole, 1-3. water inlet, 1-4. fixed rod, 1-5. first horizontal partition, 1-6. second horizontal partition, 1-7. third horizontal partition, 1-8. first treatment area, 1-9. second treatment area, 1-10. third treatment area, 1-11. overflow area, 2. inner cylinder, 2-1. filler frame, 2-2. horizontal plate, 2-3. water outlet, 2-4. carbon fiber cloth biological filler, 3. accommodating cavity, 4-1. lower baffle, 4-2. upper baffle, 4-3. flow chamber, 4-4. water inlet, 4-5. flow outlet, 5. first micro-power aeration device, 6. second micro-power aeration device. DETAILED DESCRIPTION

[0030] The application will be described in detail below in conjunction with the embodiments. It should be understood that the following embodiments are only illustrative of the embodiments of the application, but not the limitation of the scope of the application.

[0031] As Figures 1-5 shown, it is a kind of printing and dyeing wastewater microbial integrated treatment system provided by the application, including filter fence;

[0032] The filter fence is closed to form a fence filter area in circumferential extension;

[0033] The fence filter area is provided with baffling adjustment area, microbial filter device, sedimentation area and effluent disinfection tank in sequence,

[0034] The fluid flow path in the baffling adjustment area is disc-shaped.

[0035] The microbial filter device includes inner cylinder 2 and outer cylinder 1, and the inner cylinder 2 is vertically fixed and placed inside the outer cylinder 1, the inner diameter of the outer cylinder 1 is greater than the outer diameter of the inner cylinder 2, the height of the outer cylinder 1 is greater than the height of the inner cylinder 2, and the top of the outer cylinder 1 is communicated with the inner cylinder 2, and the bottom is not communicated;

[0036] The accommodating cavity 3 is formed between the outer cylinder 1 and the inner cylinder 2, the water inlet 1-3 is formed on the sidewall of the bottom of the outer cylinder 1, the water inlet 1-3 is communicated with the accommodating cavity 3, the fixed rod 1-4 is vertically fixed at the bottom of the accommodating cavity 3, a plurality of horizontal partitions are sequentially arranged in the fixed rod 1-4 from bottom to top, the horizontal partitions separate the accommodating cavity 3 into a plurality of treatment areas and overflow areas 1-11 along the vertical direction, the treatment areas are filled with suspended microbial fillers, the treatment areas and overflow areas 1-11 are communicated with each other through the holes 1-2 on the surface of the horizontal partitions, the treatment area adjacent to the overflow area 1-11 is provided with the first micro-power aeration device 5 on the horizontal partition, and the first micro-power aeration device 5 monitors and adjusts the concentration of dissolved oxygen around the horizontal partition in real time;

[0037] The inner cylinder 2 is vertically fixed and placed inside a filler frame 2-1, the surface of which is circumferentially wrapped with carbon fiber cloth biological filler 2-4, which extends along the axial direction of the inner cylinder 2, and a water outlet 2-3 is formed on the bottom side wall of the inner cylinder 2, and a second micro-power oxygen exposure device 6 is further arranged at the bottom of the inner cylinder 2, which monitors and adjusts the concentration of dissolved oxygen around the bottom of the horizontal inner cylinder 2 in real time.

[0038] In a specific embodiment, the fixed rod 1-4 is fixedly connected with the horizontal partition plate by a screw thread, and the horizontal partition plate can be displaced along the axial direction of the fixed rod 1-4.

[0039] In a specific embodiment, the horizontal partition plate has three, namely a first horizontal partition plate, a second horizontal partition plate 1-6, and a third horizontal partition plate 1-7, which are spaced apart in the vertical direction within the accommodation space, separating the accommodation cavity 3 into three treatment zones and an overflow zone 1-11 in the vertical direction, the three treatment zones being a first treatment zone 1-8, a second treatment zone 1-9, and a third treatment zone 1-10, and the third treatment zone 1-10 is provided with a first micro-power oxygen exposure device 5 on the horizontal partition plate.

[0040] In a specific embodiment, the baffle adjustment zone includes a water inlet 4-4, a flow outlet 4-5, and a sealed flow chamber 4-3, the water inlet 4-4 and the flow outlet 4-5 are in communication with the side walls of the front and rear ends of the flow chamber 4-3, respectively, a plurality of upper baffles 4-2 and a plurality of lower baffles 4-1 are horizontally spaced apart on the inner wall of the flow chamber 4-3 along its axial direction, the upper baffles 4-2 and the lower baffles 4-1 are parallel and spaced apart and staggered, one end of the upper baffles 4-2 and the lower baffles 4-1 is fixedly connected with the inner wall of the flow chamber 4-3, and the other end is not in contact with the inner wall of the flow chamber 4-3, and the fluid pumped from the water inlet 4-4 can only alternately flow forward along the gap between the upper end of the lower baffle 4-1 and the flow chamber 4-3 and the gap between the lower end of the lower baffle 4-1 and the flow chamber 4-3, and flow out from the flow outlet 4-5.

[0041] In a specific embodiment, the filler frame 2-1 is provided with a horizontal plate 2-2 above the top of the inner cylinder 2, and a vibration motor is fixedly arranged on the upper part of the horizontal plate 2-2.

[0042] In use, the printing and dyeing wastewater is first filtered by the grid filter area to remove the larger impurities in the printing and dyeing wastewater, and then pumped into the baffle adjustment area, and then enters the outer cylinder 1 of the microbial filter device through the water inlet 1-3 of the baffle adjustment area and the microbial filter device, and flows from bottom to top, sequentially passes through the first treatment area 1-8, the second treatment area 1-9, the third treatment area 1-10 and the overflow area 1-11, and finally enters the inner cylinder 2 of the microbial filter device from the upper part. When the height of the wastewater in the inner cylinder 2 is lower than the top edge of the inner cylinder 2 and does not reach the surface of the carbon fiber cloth biological filler 2-4 wound around the filler frame 2-1, the water outlet 2-3 at the bottom of the inner cylinder 2 is opened, the discharge speed of the wastewater at the water outlet 2-3 is controlled, so that the liquid level of the wastewater in the inner cylinder 2 reaches the carbon fiber cloth biological filler 2-4 and maintains at a certain height, and the wastewater continuously enters the sedimentation area from the water outlet 2-3 for chemical precipitation, and then enters the effluent disinfection tank for disinfection treatment.

[0043] The chemical precipitation reagent used in the sedimentation tank can be a polymer agent, such as polyacrylamide PAM, which is used to adsorb suspended substances in the wastewater to form larger agglomerates and accelerate the sedimentation process. The effluent disinfection tank uses a wastewater ultraviolet lamp for disinfection.

[0044] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A microbial filtration device, characterized in that, It includes an inner cylinder (2) and an outer cylinder (1). The inner cylinder (2) is vertically fixed inside the outer cylinder (1). The inner diameter of the outer cylinder (1) is greater than the outer diameter of the inner cylinder (2). The height of the outer cylinder (1) is greater than the height of the inner cylinder (2). The top of the outer cylinder (1) is connected to the bottom of the inner cylinder (2). An accommodating cavity (3) is formed between the outer cylinder (1) and the inner cylinder (2). An inlet (1-3) is provided on the bottom side wall of the outer cylinder (1). The inlet (1-3) is connected to the accommodating cavity (3). A fixing rod (1-4) is vertically fixed at the bottom of the accommodating cavity (3). Several horizontal partitions are sequentially passed through the fixing rod (1-4) from bottom to top. The horizontal partitions divide the accommodating cavity (3) into several treatment zones and overflow zones (1-11) in the vertical direction. The treatment zone is filled with suspended microbial packing material (7). The treatment zone and the overflow zone (1-11) are connected to each other through the openings (1-2) on the surface of the horizontal partitions. The treatment zone adjacent to the overflow zone (1-11) has a first micro-power aeration device (5) on its horizontal partition. The first micro-power aeration device (5) monitors and adjusts the concentration of dissolved oxygen around the horizontal partition in real time. The inner cylinder (2) has a packing frame (2-1) vertically fixed inside. The surface of the packing frame (2-1) is wrapped with carbon fiber cloth biological packing (2-4) in a circumferential direction. The carbon fiber cloth biological packing (2-4) extends along the axial direction of the inner cylinder (2). The bottom side wall of the inner cylinder (2) has an outlet (2-3). The bottom of the inner cylinder (2) is also equipped with a second micro-power aeration device (6).

2. The microbial filtration device according to claim 1, characterized in that, The fixed rod (1-4) is fixedly connected to the horizontal partition by a threaded connection, and the horizontal partition is displaced along the axial direction of the fixed rod (1-4).

3. The microbial filtration device according to claim 1, characterized in that, The horizontal partition has three parts, namely the first horizontal partition, the second horizontal partition (1-6) and the third horizontal partition (1-7). The horizontal partitions are distributed at intervals in the accommodating space along the vertical direction, dividing the accommodating cavity (3) into three treatment areas and one overflow area (1-11) in the vertical direction. The three treatment areas are the first treatment area (1-8), the second treatment area (1-9) and the third treatment area (1-10). The third treatment area (1-10) is provided with a first micro-power aeration device (5) on the horizontal partition.

4. A microbial filtration device according to claim 1, characterized in that, The top of the packing frame (2-1) above the inner cylinder (2) is provided with a horizontal plate (2-2).

5. A microbial integrated treatment system for dyeing and printing wastewater, characterized in that, Includes the microbial filtration device according to any one of claims 1-4.

6. The integrated microbial treatment system for dyeing and printing wastewater according to claim 5, characterized in that, Including filter grids; The filter grid extends circumferentially to form a grid filter area; Following the grating filtration zone are a flow regulating zone, a microbial filtration device, a sedimentation zone, and an effluent disinfection tank, which are connected in sequence. The fluid flow path within the deflector regulation zone is disc-shaped.

7. The integrated microbial treatment system for dyeing and printing wastewater according to claim 6, characterized in that, It also includes a remote control system, which includes a temperature control system and a pH control system. The remote control system monitors and adjusts the temperature and pH inside the microbial filtration device in real time through the temperature control system and the pH control system.

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