CN210163204U

CN210163204U - Vertical multi-cell hydrolysis tank for pretreatment of industrial wastewater in narrow plant area

Info

Publication number: CN210163204U
Application number: CN201920807411.XU
Authority: CN
Inventors: 王世和
Original assignee: JIANGSU YIQING ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Current assignee: JIANGSU YIQING ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-03-20
Anticipated expiration: 2029-05-31

Abstract

The utility model relates to a vertical many check room pond of hydrolysising for narrow factory area industrial waste water preliminary treatment, including outer rampart, well rampart, interior rampart, water-locator and play water overflow launder. A third cell is formed between the outer ring wall and the middle ring wall, a water collecting well is arranged in the third cell, a circulation hook groove is formed in the bottom of the middle ring wall, a second water outlet is formed in the bottom of the circulation hook groove, a second cell is formed between the middle ring wall and the inner ring wall, a first cell is formed inside the inner ring wall, a first water outlet is formed in one side of the top of the inner ring wall, a baffle is fixed between the inner ring wall and the middle ring wall, and a water distributor is installed at the bottom of the first cell. The utility model discloses a pond is hydrolysised to vertical many check rooms, the many check rooms principle of hydrolysising of high load factor, high purification efficiency obtains the extensibility to be used, has created good condition for follow-up aerobic biological treatment, has reached the target of preliminary treatment and removal part organic matter, is particularly suitable for the preliminary treatment of narrow factory industrial waste water.

Description

Vertical multi-cell hydrolysis tank for pretreatment of industrial wastewater in narrow plant area

Technical Field

The utility model relates to a dirty (useless) water treatment technical field especially relates to a vertical many check room pond of hydrolysising for narrow factory industrial waste water preliminary treatment, the main pretreatment who is used for difficult degradation industrial waste water.

Background

At present, aiming at the treatment of refractory industrial wastewater, a method which is popular internationally still takes a physicochemical (or biochemical) pretreatment and biological post-treatment method as a main process, and particularly, biological pretreatment of refractory substances by a hydrolysis acidification mechanism is more commonly applied. Thus, the treatment effect is stable, the organic matter degradation rate is high, the system sludge production is less, the resource is easy to realize while the energy consumption and the operation cost are saved,

in the biological pretreatment, a multi-cell hydrolysis reactor with high load, biological flora grading and segmented treatment functions is favored, the process setting and the action principle are that a hydrolysis tank is divided into a plurality of cells along a flow path, and when sewage (waste) flows through each cell, a dominant microbial population adapting to the nutrient content of the sewage (waste) is formed based on the process degradation process and the requirements of different pollutants, so that the maximum function of each degradation section is exerted, the hydrolysis depth of different substances is greatly improved, the biodegradability is improved, and the overall removal effect of the pollutants is improved. However, most of the existing methods are that a plurality of cells are arranged in the horizontal direction, and the main stream of wastewater still passes through each cell in the horizontal direction, so that the design and the field layout are relatively easy. However, another situation is often encountered in actual engineering, such as existing enterprises, especially some industrial enterprises still residing in urban areas, or original wastewater-free treatment facilities, or original treatment systems which are difficult to reach the discharge standards and need to be modified, which is difficult to implement due to site condition limitations. At this time, the process modification corresponding to the actual situation needs to be considered, so that the high-efficiency and stable multi-chamber hydrolysis process is still applied, and the due benefits are exerted. The utility model discloses just provide based on this kind of condition to obtain using in the processing of certain printing and dyeing waste water that this company accepted, it is respond well.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vertical many check rooms pond of hydrolysising for narrow factory area industrial waste water preliminary treatment, through vertical many check rooms pond of hydrolysising, the many check rooms principle of hydrolysising with high load factor, high purification efficiency obtains the extensibility and uses, has created good condition for follow-up aerobic biological treatment, has reached the purpose of preliminary treatment and removal part organic matter, is particularly suitable for the preliminary treatment that is used for narrow factory area industrial waste water.

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

a vertical multi-cell hydrolysis tank for pretreating industrial wastewater in a narrow factory area, which comprises an outer annular wall, a middle annular wall, an inner annular wall, a water distributor and a water outlet overflow trough, the outer ring wall is of a cylindrical structure, the top of the outer side of the outer ring wall is provided with a water outlet overflow trough, a third cell is formed between the outer ring wall and the middle ring wall, a water collecting well is arranged in the third cell, the bottom of the middle annular wall is provided with a circulation hook groove, the bottom of the circulation hook groove is provided with a second water outlet, a second cell is formed between the middle annular wall and the inner annular wall, the inner annular wall is of a cylindrical structure, and the bottom of the inner ring wall is fixedly connected with the bottom of the outer ring wall, the inner part of the inner ring wall forms a first cell, a first water outlet is formed in one side of the top of the inner ring wall, a baffle is fixed to one side, close to the first water outlet, between the inner ring wall and the middle ring wall, and the water distributor is installed inside the first grid chamber.

In the above scheme, the water collecting well comprises an overflow weir plate and a partition plate, the bottom of the overflow weir plate and the bottom of the partition plate are both fixedly connected with the bottom of the outer annular wall, and the height of the overflow weir plate is not higher than that of the partition plate.

In the above scheme, the middle annular wall is in a circular or polygonal structure, and the circulation hook groove is in an inverted trapezoidal structure with an opening at the top.

In the above scheme, the bottom of second check room and the bottom of third check room all are provided with the dive agitator that adjusts the rivers flow direction and mix muddy water.

In the above scheme, the water-locator includes inlet manifold, one-level water distribution branch pipe and water distribution point mouth of pipe, inlet manifold connects outside waste pipe, one-level water distribution branch pipe is L type return bend, and is provided with four, one-level water distribution branch pipe is the cross form and distributes, and communicates with inlet manifold's bottom through one-level water knockout drum respectively, the bottom of one-level water distribution branch pipe is linked together through second grade water knockout drum and water distribution point mouth of pipe.

In the above scheme, the filler is arranged in each of the first cell, the second cell and the third cell.

In the scheme, the inclined plane is arranged at the bottom of the outer wall of the outer ring wall, so that sludge can slide down conveniently, and sludge deposition is reduced.

In the above scheme, the first water outlet and the second water outlet are both rectangular openings.

In the above scheme, the outer annular wall, the middle annular wall and the inner annular wall are of an integrated structure.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a pond is hydrolysised to vertical many check rooms, the mainstream of rivers is radial, and flows for the annular in every annular check room space, mixes and reaches and activated sludge's mixed contact for increasing the water conservancy in every annular check room, sets up the delivery port with circulation department between every two annular check rooms in proper order on upper portion or lower part, makes inside rivers present certain upper and lower flow direction of turning back. Especially can't use conventional level to arrange many check rooms at ground condition and hydrolyze under the condition in pond, adopt the utility model discloses a vertical many check rooms is hydrolyzed the pond, and the many check rooms with high load factor, high purification efficiency principle of hydrolysising obtains the extensibility and uses, has created good condition for subsequent aerobic biological treatment, has reached the preliminary treatment and has got rid of the target of partial organic matter, is particularly suitable for being used for the preliminary treatment of narrow factory industrial waste water.

Drawings

FIG. 1 is a schematic view of the top view of the multi-compartment hydrolysis tank of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1;

FIG. 3 is a water flow direction diagram of the multi-cell hydrolysis tank of the present invention;

FIG. 4 is a schematic view of the first water outlet at the part A in FIG. 3;

FIG. 5 is a schematic view of a second water outlet at the part B in FIG. 3;

FIG. 6 is a schematic cross-sectional view of the sump well B-B of FIG. 3;

FIG. 7 is a cross-sectional view of the packing arrangement of the middle multi-cell hydrolysis tank of the present invention;

FIG. 8 is a vertical view of the water distributor of the present invention;

fig. 9 is a schematic view of the cross-sectional structure C-C in fig. 8.

Reference numbers in the figures: 1-outer annular wall; 11-a third cell; 12-a water outlet overflow trough; 13-inclined plane; 2-middle ring wall; 21-a second cell; 22-circulation groove; 23-a second water outlet; 24-a baffle; 3-inner annular wall; 31-a first cell; 32-a first water outlet; 33-a submersible mixer; 4-a water distributor; 41-water inlet main pipe; 42-first level water separator; 43-first-stage water distribution branch pipe; 44-a secondary water separator; 45-water distribution point pipe orifice; 5-a water collecting well; 51-an overflow weir plate; 52-a separator; 6-a filler; 61-channel steel; 62-angle steel.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

As shown in fig. 1, 2 and 3, the vertical multi-cell hydrolysis tank for the pretreatment of industrial wastewater in narrow factories comprises an outer ring wall 1, an intermediate ring wall 2, an inner ring wall 3, a water distributor 4 and a water outlet overflow trough 12, wherein the outer ring wall 1 is of a cylindrical structure, the top of the outer side of the outer ring wall 1 is provided with the water outlet overflow trough 12, wastewater treated by the multi-cell hydrolysis tank enters a biological contact oxidation tank in the subsequent process through the water outlet overflow trough 12, and the bottom of the outer wall of the outer ring wall 1 is provided with an inclined surface 13, so that the sliding of sludge is facilitated, and the sludge deposition is reduced. A third cell 11 is formed between the outer ring wall 1 and the middle ring wall 2, and a submersible stirrer 33 for regulating the flow direction of water flow and mixing muddy water is arranged at the bottom of the third cell 11. The water collecting well 5 is arranged in the third cell 11, referring to fig. 6, the water collecting well 5 comprises an overflow weir plate 51 and a partition plate 52, the bottom of the overflow weir plate 51 and the bottom of the partition plate 52 are both fixedly connected with the bottom of the outer annular wall 1, the height of the overflow weir plate 51 is not higher than the height of the partition plate 52, and the treated wastewater flows into the water collecting well 5 from the overflow weir plate 51.

The middle annular wall 2 is in a circular or polygonal structure, the bottom of the middle annular wall 2 is provided with the circulation hook groove 22, and the circulation hook groove 22 is in an inverted trapezoidal structure with an open top, so that the submersible stirrer 33 is convenient to mount, and the adjustment of the flow direction of water flow and the mixing of muddy water are facilitated. The bottom of the circulation hook groove 22 is provided with a second water outlet 23, please refer to fig. 5, and the second water outlet 23 is a rectangular structure. The middle annular wall 2 and the inner annular wall 3 form a second cell 21, and the bottom of the second cell 21 is provided with a submersible stirrer 33 for adjusting the flow direction of water and mixing muddy water.

The inner annular wall 3 is a cylindrical structure, and the bottom of the inner annular wall 3 is fixedly connected with the bottom of the outer annular wall 1, the inner portion of the inner annular wall 3 forms a first cell 31, one side of the top of the inner annular wall 3 is provided with a first water outlet 32, please refer to fig. 4, the first water outlet 32 is a rectangular opening. A baffle plate 24 is fixed between the inner ring wall 3 and the middle ring wall 2 at the side close to the first water outlet 32 and is used for blocking the wastewater flowing from the first cell 31 so that the wastewater flows in the second cell 21 in a counterclockwise or clockwise mode under the action of a submersible stirrer 33.

Referring to fig. 8 and 9, the water distributor 4 includes a water inlet header 41, four first-stage water distribution branch pipes 43 and a water distribution point pipe orifice 45, the water inlet header 41 is connected to an external waste water pipe, the first-stage water distribution branch pipes 43 are L-shaped elbows, the first-stage water distribution branch pipes 43 are distributed in a cross shape and are respectively communicated with the bottom of the water inlet header 41 through the first-stage water distributor 42, and the bottom of the first-stage water distribution branch pipes 43 is communicated with the water distribution point pipe orifice 45 through the second-stage water distributor 44. The water distributor 4 is installed inside the first cell 31, wastewater which is lifted from the sludge pool in the previous process into the water inlet main 41 through the lift pump flows into the bottom of the first cell 31 from the water distribution point pipe orifice 45 at the bottom of the water distributor 4 and flows from bottom to top.

In order to better degrade organic matters in the wastewater, please refer to fig. 7, fillers 6 are respectively arranged in the first cell 31, the second cell 21 and the third cell 11, the fillers 6 are divided into combined fillers or elastic fillers, a bracket of the combined fillers or the elastic fillers is made of reinforcing steel bars with the diameter of 14mm, a plurality of groups of layers are arranged, the distance between every two adjacent layers is 140mm, and in order to fix the combined fillers or the elastic fillers, in implementation, the upper surface and the lower surface of the bracket of the combined fillers or the elastic fillers can be welded and fixed by adopting angle steel 62 with the size of 50 x 50mm and channel steel 61 with the model number of 10#, so that the bracket of the combined fillers or the elastic fillers is firmly placed in each cell. The elastic filler is a filiform filler similar to nylon wire, the combined filler is a disk-shaped soft filler with definite meaning, and the elastic filler and the combined filler have different shapes and properties and are respectively characterized but are carriers for the attachment and growth of microorganisms. The combined filler or the elastic filler can be selected according to the requirements of users without limitation, and the filler is a filler frame made of reinforcing steel bars and bound on the filler frame.

The utility model discloses a concrete implementation can design and build in combination with factory floor and space condition. For a factory with a narrow ground space, a certain retention time can be met by a method of further heightening in height. Generally, it can be made of concrete prefabricated or steel structure. In order to prevent leakage among the cells, the outer ring wall, the middle ring wall and the inner ring wall are cast by adopting a concrete integrated structure.

Due to the symmetry of the water flow direction, a circular, axisymmetric arrangement as shown in fig. 1 is generally adopted. According to the site conditions and the nature of the wastewater, 3-7 annular cells (3-ring structure is shown in fig. 1 as an example) can be arranged along the radial direction to form a sleeve type structure. In the wastewater flow direction, based on the conventional multi-cell hydrolysis tank, the cells are arranged horizontally, the main flow of the water flow is in the horizontal direction, and the wastewater flows back up and down in each cell. And the utility model discloses a pond is hydrolysised to vertical many check rooms, the mainstream of rivers is radial, and flows for the annular in every annular check room space. In order to increase hydraulic mixing in each annular grid chamber and mixing contact with activated sludge, water outlets are sequentially arranged at the upper part or the lower part of the circulation position between every two annular grid chambers, so that the internal water flow presents a certain upward and downward turning flow direction.

The working process is as follows: please refer to fig. 3, which is a water flow diagram of the multi-compartment hydrolysis tank of the present invention. In order to uniformly distribute the inlet water, the waste water is fed into the bottom of the first grid chamber 31 of the inner ring by means of the lap joint of the water inlet main pipe 41 and the first-stage water distribution branch pipe 43, and is uniformly distributed on the horizontal plane of the bottom by the cross branch pipe arranged at the lower end of the water distributor 4, so that the waste water ascends from bottom to top according to parallel flow to the first water outlet 32 at the upper part to enter the second grid chamber 21, and then flows around in the counterclockwise direction (according to the design, the clockwise direction) in the second grid chamber 21, and then enters the third grid chamber 11 from the second water outlet 23 arranged at the bottom of the second grid chamber 21, ascends and flows around in the counterclockwise direction (according to the design, the clockwise direction), and flows into the water collecting well 5 from the overflow port of the overflow weir plate 51 arranged at the upper part of the third grid chamber 11, and further flows into a subsequent treatment facility from the water outlet overflow well.

In order to increase the biological concentration and the treatment effect of the system, a combined filler or an elastic filler 6 can be arranged in a plurality of or all of the cells. If the design has more cells than the present figure, the method can be used in accordance therewith. In order to adjust the flow direction, a submersible stirrer 33 can be arranged on the side wall of each annular cell to accelerate the flow direction of the water flow in the multi-cell hydrolysis tank.

Before applying the utility model discloses a, this company used in the waste water treatment engineering of certain printing and dyeing mill accepted the utility model discloses a pond is hydrolysised to vertical many check rooms. The printing and dyeing wastewater has complex components, polycyclic aromatic hydrocarbon substances and high salt content, and has poor biodegradability. According to actual measurement, CODcr is about 2000mg/L, chroma is more than 1000 times, and BOD of degradability is measured₅the/CODcr index is only about 0.15. Because the plant is located in a downtown (historically suburb, the downtown becomes an urban area along with the continuous expansion of the urban area), the ground of the plant area is very narrow, the horizontally-arranged multi-cell hydrolysis tank cannot be adopted, the load rate of other hydrolysis tanks is low, the effect is poor, and higher pretreatment requirements are difficult to achieve, so that the pretreatment of the wastewater is carried out by adopting the vertical multi-cell hydrolysis tank in combination with the conditions of the empty space of the plant area. After construction, biological inoculation and one-month culture domestication are carried out, so that the biomass is greatly improved, the color degree is obviously changed apparently, the color is changed from dark brown to light red, and actual measurement shows that the structure is changed based on substances containing coloring groups (the process that macromolecular substances are hydrolyzed into micromolecular substances, cyclic substances are changed into chain-shaped substances, and long-chain substances are changed into short-chain substances). The chroma removal rate reaches more than 70 percent, the CODcr removal rate reaches about 30 percent, and particularly the BOD₅the/CODcr index is changed from 0.15 to 0.35-0.41, which creates good conditions for subsequent aerobic biological treatment and completely achieves the aim of pretreatment. By this example, furtherThe superiority of the multi-cell hydrolysis pool is proved. The utility model discloses can't use conventional level to arrange many check rooms at ground condition and hydrolyze under the condition in pond, adopt the utility model discloses a vertical many check rooms is hydrolyzed pond obtains the extensibility with the many check rooms hydrolysis principle of high load factor, high purification efficiency and uses, has fine creativity and practicality.

The above-mentioned embodiments further explain in detail the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the embodiments of the present invention, and are not intended to limit the scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a vertical many check room pond of hydrolysising for pretreatment of narrow factory area industrial waste water which characterized in that: the water distributor comprises an outer ring wall (1), a middle ring wall (2), an inner ring wall (3), a water distributor (4) and a water outlet overflow groove (12), wherein the outer ring wall (1) is of a cylindrical structure, the water outlet overflow groove (12) is arranged at the top of the outer side of the outer ring wall (1), a third grid chamber (11) is formed between the outer ring wall (1) and the middle ring wall (2), a water collecting well (5) is arranged inside the third grid chamber (11), a circulation hook groove (22) is arranged at the bottom of the middle ring wall (2), a second water outlet (23) is formed at the bottom of the circulation hook groove (22), a second grid chamber (21) is formed between the middle ring wall (2) and the inner ring wall (3), the inner ring wall (3) is of a cylindrical structure, the bottom of the inner ring wall is fixedly connected with the bottom of the outer ring wall (1), a first grid chamber (31) is formed inside the inner ring wall (3), and a first water outlet (32) is formed at one side, a baffle (24) is fixed on one side of the space between the inner annular wall (3) and the middle annular wall (2) close to the first water outlet (32), and the water distributor (4) is arranged in the first grid chamber (31).

2. The vertical multi-cell hydrolysis tank for the pretreatment of industrial wastewater in narrow factories according to claim 1, characterized in that: the water collecting well (5) comprises an overflow weir plate (51) and a partition plate (52), the bottom of the overflow weir plate (51) and the bottom of the partition plate (52) are fixedly connected with the bottom of the outer annular wall (1), and the height of the overflow weir plate (51) is not higher than that of the partition plate (52).

3. The vertical multi-cell hydrolysis tank for the pretreatment of industrial wastewater in narrow factories according to claim 1, characterized in that: the middle annular wall (2) is of a circular or polygonal structure, and the circulation hook groove (22) is of an inverted trapezoidal structure with an open top.

4. The vertical multi-cell hydrolysis tank for the pretreatment of industrial wastewater in narrow factories according to claim 1, characterized in that: the bottom of the second grid chamber (21) and the bottom of the third grid chamber (11) are both provided with a submersible stirrer (33) for regulating the flow direction of water flow and mixing muddy water.

5. The vertical multi-cell hydrolysis tank for the pretreatment of industrial wastewater in narrow factories according to claim 1, characterized in that: water distributor (4) are including inlet manifold (41), one-level water distribution branch pipe (43) and water distribution point mouth of pipe (45), external waste water pipeline is connected in inlet manifold (41), one-level water distribution branch pipe (43) are L type return bend, and are provided with four, one-level water distribution branch pipe (43) are the cross and distribute, and communicate with the bottom of inlet manifold (41) through one-level water knockout drum (42) respectively, the bottom of one-level water distribution branch pipe (43) is linked together through second grade water knockout drum (44) and water distribution point mouth of pipe (45).

6. The vertical multi-cell hydrolysis tank for the pretreatment of industrial wastewater in narrow factories according to claim 1, characterized in that: and the filler (6) is arranged in the first cell (31), the second cell (21) and the third cell (11).

7. The vertical multi-cell hydrolysis tank for the pretreatment of industrial wastewater in narrow factories according to claim 1, characterized in that: the bottom of the outer wall of the outer ring wall (1) is provided with an inclined plane (13).

8. The vertical multi-cell hydrolysis tank for the pretreatment of industrial wastewater in narrow factories according to claim 1, characterized in that: the first water outlet (32) and the second water outlet (23) are both rectangular openings.

9. The vertical multi-cell hydrolysis tank for the pretreatment of industrial wastewater in narrow factories according to claim 1, characterized in that: the outer ring wall (1), the middle ring wall (2) and the inner ring wall (3) are of an integrated structure.