CN203866157U - Integrated baffle type anaerobic/anoxic/aerobic membrane filtration high-concentration organic wastewater treatment device - Google Patents

Abstract

The utility model relates to an integrated baffle type anaerobic/anoxic/aerobic/membrane filtration high-concentration organic wastewater treatment device, which mainly consists of a sewage pool, a one-way flow ABR reactor, and an upflow type with agitator. Oxygen tank, upflow aerobic tank, sedimentation tank and upflow microfiltration membrane filtration tank and other equipment. The fillers in the two reaction tanks 19 and 21 are elastic fillers, and a ring-shaped microporous aeration device is arranged in the middle of the bottom of the tank 21, which can make the water flow in a fluidized state, allowing the microorganisms, water flow, and air to fully contact to realize nitrification and phosphorus accumulation and full degradation of organic pollutants. This device combines the advantages of ABR (anaerobic baffle) process, biofilm method, A ² /O (anaerobic/anoxic/aerobic) process, MF (microfiltration membrane filtration) process, etc. It has the advantages of stability, simple operation and management, small footprint, and low operating cost.

Description

An integrated baffle type anaerobic/anoxic/aerobic/membrane filtration high-concentration organic wastewater treatment device

technical field

The utility model relates to a high-concentration organic waste water treatment device, in particular to an integrated treatment device combining ABR process, biofilm method, ^A2 /O process, MF (microfiltration membrane filtration) process, etc., belonging to industrial waste water treatment equipment .

Background technique

High-concentration organic wastewater has a large degree of pollution to the environmental water body, and the treatment is difficult, which is one of the difficult problems in the field of environmental protection research at home and abroad. At present, the treatment methods of high-concentration organic wastewater mainly include physical and chemical treatment and biological treatment. Physicochemical treatment is a method of converting pollutants in wastewater into harmless substances by applying physical and chemical effects and principles, such as chemical oxidation and membrane separation; biological treatment is the use of microorganisms to degrade pollutants in water. Pollutants are used as their own nutrients and energy sources, while the wastewater is purified. The main methods of biological treatment of high-concentration organic wastewater include anaerobic biological treatment and aerobic biological treatment.

However, for the treatment of high-concentration organic wastewater, a single sewage treatment method can no longer meet the requirements, and it is particularly important to develop efficient combined treatment technologies. Combining anaerobic biological treatment, aerobic biological treatment, physical and chemical treatment and other methods can effectively improve the biodegradability of sewage and wastewater, the ability to resist impact load and the stability of effluent water quality. The utility model combines ABR process, A ² /O process, biofilm method, membrane filtration and other processes to provide a new integrated treatment device capable of treating high-concentration organic wastewater, which effectively solves the problem of poor treatment effect of high-concentration organic wastewater , Low impact resistance and unstable effluent quality.

Contents of the invention

The purpose of this utility model is to provide an integrated device combining ABR, biofilm method, A ² /O, MF (microfiltration membrane filtration) and so on to solve the problems of poor treatment effect of high-concentration organic wastewater and unstable effluent quality. , the device can effectively improve the treatment effect and effluent water quality.

In order to achieve the above object, the technical scheme of the utility model is as follows:

Integrated baffle type anaerobic/anoxic/aerobic/membrane filtration high-concentration organic wastewater treatment device includes: sewage tank, water inlet system, unidirectional flow ABR reactor, upflow anoxic tank, upflow aerobic tank , sedimentation tank, upflow microfiltration membrane filter tank, water outlet system and sludge discharge system. The feature of the device is that it is treated statically in the sewage pool. The waste water enters the one-way flow ABR reactor from the left end of the water inlet pipe, and the up and down alternate one-way push flow. The fillers used in the one-way flow ABR reactor are polyolefin and polyamide. In addition to the water inlet pipe, there are sludge discharge pipes and exhaust outlets connected to the unidirectional flow ABR reactor to remove the exfoliated biofilm (sludge), tiny solid impurities, methane produced by anaerobic treatment. Gas and other substances; the effluent overflows from the right end of the one-way flow ABR reactor, enters the upflow anoxic tank along the deflector, and enters the upflow aerobic tank along the deflector from the lower part after anoxic treatment; the upflow aerobic tank The filler filled in the tank is the same elastic filler as the one-way flow ABR reactor. Two annular microporous aeration devices are arranged at the bottom of the upflow aerobic tank, and the lower end is equipped with a porous baffle to fix the annular microporous aeration. Device; the effluent enters the sedimentation tank from the upper part of the upflow aerobic tank through the deflector, and the supernatant after sedimentation enters the upflow microfiltration membrane filtration tank. Several microfiltration membrane filters are arranged in the tank, and the microfiltration membrane filter adopts Hollow fiber membrane, connected with the upflow microfiltration membrane filtration tank, there are filtrate outlet pipes and filtered waste liquid outlet pipes, and membrane pressure gauges are installed on the filtered waste liquid outlet pipes; the lower part of the sedimentation tank is provided with mud discharge outlets, and upflow anoxic The lower part of the tank and the upflow aerobic tank are equipped with a V-shaped mud discharge port (the angle is 145°), and a common total mud discharge pipe is used to connect the sedimentation tank, the upflow anoxic tank and the upflow aerobic tank, and each reaction The biofilm and impurity sediments shed from the pool are discharged into the sludge pool.

The horizontally arranged one-way flow ABR reactor is placed on the upper layer to treat the initial water inflow. The side of the one-way flow ABR reactor is arranged with a mud discharge pipe and an exhaust port, and the outlet water flows vertically along the deflector.

The elastic filler is used as the filler. The elastic filler is a mixed material of polyolefin and polyamide. It has a cubic structure and is suspended. The device for fixing the filler can use tough, high hardness, strong corrosion resistance, low price and easy construction such as nylon rope. Materials; the filling rate of unidirectional flow ABR reactor is 80%-90%, and the filling rate of upflow aerobic tank is 70%-80%; the microfiltration membrane filter used for filtration adopts hollow fiber membrane, and the material is Mixed cellulose esters.

At the bottom of the upflow aerobic tank, an annular microporous aeration device is used for aeration. The annular microporous aeration device is arranged at a symmetrical place in the center of the bottom. During aeration, the airflow drives the water flow to rotate upwards evenly.

Through the partition, each reaction pool is divided into its own area, so that the treatment of waste water can be carried out regularly according to certain steps, so that the waste water can be fully treated in each reaction pool. the

Compared with the prior art, the utility model has the advantages that:

①The device combines a variety of commonly used wastewater treatment processes. It has a novel and compact structure, reasonable layout, easy operation, safe and stable work, improves the stability of effluent water quality, and saves energy consumption for treatment and daily operation costs. ②The filler is made of a mixed material of polyolefin and polyamide, which has a large specific surface area, no agglomeration, no clogging, long service life, can improve the oxygen transfer rate, and can be reused. The production and operation management is simple and the adaptability is strong. The filling of the unidirectional flow ABR reactor adopts the one-side fixed type, and the filling of the upflow aerobic tank adopts the central axis fixed type. These two arrangements are a good combination of suspension type and fixed type. At the same time, it can increase the contact area of air, biofilm and water flow, which can improve the treatment effect. ③ Less sludge discharge and good biochemical properties. In the unidirectional flow ABR reactor, the anaerobic process can decompose macromolecular substances and refractory substances into small molecules and easily degradable substances. It has a good treatment effect; under the anoxic condition of the upflow anoxic tank, denitrification and denitrification are fully carried out, and under the aerobic conditions of the upflow aerobic tank, the effluent of the upflow anoxic tank is nitrified and degraded And so on, to further improve the effluent water quality; the biofilm is quite rich in organisms, the reaction tank runs under long sludge, and the sludge discharge is small. ④ The effect of treating organic wastewater and removing nitrogen and phosphorus is remarkable, and it can treat medium-to-high-concentration refractory organic wastewater or medium-to-high-concentration domestic sewage, so the application range of this device is very wide.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the main structure of the utility model.

Fig. 2 is the P-P section schematic diagram of the utility model.

Fig. 3 is the H-H sectional schematic diagram of the utility model.

In the figure: 1. sewage tank, 2. sewage pump, 3. valve, 4. water inlet pipe, 5. mud discharge pipe, 6. exhaust port, 7. mechanical agitator, 8. porous baffle, 9. annular micro Pore aeration device, 10. Elastic filler, 11. Membrane filter, 12. Filtrate outlet pipe, 13. Membrane pressure gauge, 14. Filtration waste liquid outlet pipe, 15. Total sludge discharge pipe, 16. Sludge tank, 17. Return pipe inlet, 18. Return pipe outlet, 19. One-way flow ABR reactor, 20. Upflow anoxic tank, 21. Upflow aerobic tank, 22. Sedimentation tank, 23. Upflow microfiltration membrane filtration pool.

Detailed ways

As shown in the accompanying drawings, the integrated baffle plate type anaerobic/anoxic/aerobic/membrane filtration high-concentration organic wastewater treatment device of the utility model consists of a one-way flow ABR reactor 19, an upflow anoxic pool 20, an upflow A type aerobic tank 21, a settling tank 22, an upflow microfiltration membrane filter tank 23, five main reaction tanks, a sewage tank 1, and a sludge thickening tank 16 are formed. Sewage first enters the sewage pool 1 and after static treatment, under the action of the sewage pump 2, it passes through the water inlet pipe 4 and enters from the upper part of the left side wall of the one-way flow ABR reactor 19. The filler used in the one-way flow ABR reactor 19 It is an elastic filler 10 with a filling rate of 80%-90%, and the fixing method is one-sided fixing; an exhaust port 6 is arranged on the upper part of the right side wall flap of the unidirectional flow ABR reactor 19, and the rear side wall flap is arranged The mud discharge pipe 5 is used to discharge the gas and biofilm (sludge) produced by the anaerobic reaction; the upflow anoxic tank 20 is a diversion type water inlet and the upper part of the water outlet, and the upflow aerobic tank 21 is the lower part of the water inlet and the upper part of the water outlet, The filler used in the upflow aerobic tank 21 is also elastic filler 10, the filling rate is 70%-80%, and the fixing method is the central axis fixed type; two ring-shaped microporous aeration tanks are arranged in the middle of the bottom of the upflow aerobic tank 21 Device 9, the annular microporous aeration device 9 is fixed by the porous baffle 8, and the air flow drives the water flow to rotate upwards evenly during aeration; the waste water after aerobic treatment enters the sedimentation tank 22 from the upper part, the impurities are fully precipitated, and the supernatant enters the Upflow microfiltration membrane filter pool 23, the filtrate filtered by the microfiltration membrane filter 11 flows out from the filtrate outlet pipe 12, and the filtered waste liquid that has retained impurities flows out from the filtered waste liquid outlet pipe 14; the upflow microfiltration membrane filter pool Five microfiltration membrane filters 11 are arranged in 23, and the microfiltration membrane filter 11 selects hollow fiber membrane for use, and the material is mixed fiber ester. The lower part of the main body of the upflow anoxic tank 20 and the upflow aerobic tank 21 below the one-way flow ABR reactor 19 is provided with a V-shaped mud discharge port (the angle is 145°), which is shared with the sedimentation tank 22. The total mud discharge pipe 15 is connected to regularly discharge biofilms and impurity sediments that come off from each reaction tank.

Before operation, the one-way flow type ABR reactor 19 and the upflow type aerobic tank 21 carry out biofilm hanging film cultivation according to the load from low to high. 4 Enter the flap flow chamber on the left side of the one-way flow ABR reactor 19, and the anaerobically treated effluent overflows from the right side of the one-way flow ABR reactor 19 and flows into the upflow anoxic tank 20 along the deflector Denitrification and denitrification, the effluent flows into the upflow aerobic tank 21 along the guide plate for aeration and aerobic treatment, the organic matter is degraded by nitrification, and the effluent overflows from the left side of the upflow aerobic tank 21 into the sedimentation tank 22 after standing and settling. The supernatant enters the upflow microfiltration membrane filter pool 23, and the microfiltration membrane filter 11 uses the pressure difference on both sides of the membrane as the driving force and the hollow fiber membrane as the filter medium to filter and purify the supernatant under a certain pressure. , the filtered water is discharged from the filtrate outlet pipe 12, and the waste liquid generated in the filtration is discharged from the filtered waste liquid outlet pipe 14.

The elastic filler 10 is made of a mixed material of polyolefin and polyamide, which has a large specific surface area, fast film formation, good biofilm growth and regeneration, high load impact resistance, good treatment effect and long service life. One-way flow type ABR reactor 19, the device of fixed filler in upflow type aerobic pool 21 can adopt the material that has certain toughness, hardness and corrosion resistance such as nylon rope; Microfiltration membrane filter 11 adopts hollow fiber membrane, and material is Mixed fiber ester, high ratio of effective membrane surface area per unit volume, low water permeability, good chemical stability and long service life.

The utility model combines the advantages of ABR technology, biomembrane method, A ² /O technology, MF (microfiltration membrane filtration) technology and other water treatment technologies and carries out reasonable transformation. It has the characteristics of simple management, small floor space, and low operating cost. It has a good treatment effect on organic pollutants, nitrogen, phosphorus, etc. in organic wastewater. Has a good removal effect.

Claims (5)

1. integrated baffle plate type anaerobic/anoxic/aerobic/membrane filtration high concentrated organic wastewater treatment unit, mainly comprise sewage lagoon (1), water inlet pipe (4), unidirectional streaming ABR reactor (19), upflowing anoxic pond (20), upflowing Aerobic Pond (21), settling tank (22), upflowing micro-filtrate membrane filtration pond (23), filter waste liquid rising pipe (14), total shore pipe (15), sludge sump (16) forms, it is characterized in that: unidirectional streaming ABR reactor (19) is placed in top, upflowing anoxic pond (20), upflowing Aerobic Pond (21), settling tank (22) and upflowing micro-filtrate membrane filtration pond (23) are arranged in unidirectional streaming ABR reactor (19) below successively reverse connection, what be connected with unidirectional streaming ABR reactor (19) has water inlet pipe (4), shore pipe (5) and a venting port (6), in unidirectional streaming ABR reactor (19), upflowing Aerobic Pond (21), fill filler be elastic filler (10), in upflowing anoxic pond (20), establish mechanical stirrer (7), upflowing Aerobic Pond (21) bottom has arranged that two annular microporous aeration devices (9), lower end are provided with for the fixing perforated baffle (8) of aerating apparatus (9), in the upflowing micro-filtrate membrane filtration pond (23) being communicated with settling tank (22), several film filters (11) have been arranged, film filter (11) adopts hollow-fibre membrane, what be connected with upflowing micro-filtrate membrane filtration pond (23) has filtered liquid rising pipe (12), filters waste liquid rising pipe (14), the film pressure table (13) for the pressure difference of recording film both sides has been installed filtering on waste liquid rising pipe (14), in the below of upflowing anoxic pond (20), upflowing Aerobic Pond (21), settling tank (22) main body, arrange one for getting rid of the microbial film that each reaction tank comes off, total shore pipe (15) of impurity sedimentation thing.

2. integrated baffle plate type anaerobic/anoxic according to claim 1/aerobic/membrane filtration high concentrated organic wastewater treatment unit, is characterized in that: water inlet pipe (4), shore pipe (5) and venting port (6) are laid in described unidirectional streaming ABR reactor (19) side.

3. integrated baffle plate type anaerobic/anoxic according to claim 1/aerobic/membrane filtration high concentrated organic wastewater treatment unit, is characterized in that: described elastic filler (10) is the mixing material of polyolefine and polymeric amide, cube structure, suspension type; The filling ratio of unidirectional streaming ABR reactor (19) is 80%-90%, and the filling ratio of upflowing Aerobic Pond (21) is 70%-80%.

4. integrated baffle plate type anaerobic/anoxic according to claim 1/aerobic/membrane filtration high concentrated organic wastewater treatment unit, it is characterized in that: described upflowing Aerobic Pond (21) bottom adopts annular microporous aeration device (9) to carry out aeration, and at the bottom of two annular microporous aeration devices (9) are laid in pond, perforated baffle (8) is located.

5. integrated baffle plate type anaerobic/anoxic according to claim 1/aerobic/membrane filtration high concentrated organic wastewater treatment unit, it is characterized in that: described upflowing micro-filtrate membrane filtration pond (23) is provided with five film filters (11) altogether, film filter (11) adopts hollow-fibre membrane, and the material of hollow-fibre membrane is blend fiber ester.