CN213475690U

CN213475690U - Sewage treatment system

Info

Publication number: CN213475690U
Application number: CN202020990678.XU
Authority: CN
Inventors: 吴应辉; 杨志军; 李正长
Original assignee: Hunan Zhong Ce Yu Cheng Environment Technology Co ltd
Current assignee: Hunan Zhong Ce Yu Cheng Environment Technology Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-06-18
Anticipated expiration: 2030-06-02

Abstract

The utility model discloses a sewage treatment system, by the long well pipe, the equalizing basin, the pond of hydrolysising, the oxidation pond, the pond of taking off gas, the sedimentation tank, the disinfection pond, drainage basin and short well pipe constitute circulation system, contaminated offal is sent the pump sending pipe in the long well pipe by the pump to the equalizing basin, sewage is in proper order through quality of water regulation, the anaerobism is hydrolyzed and is oxidized, take off the oxygen in the sewage, deposit, the disinfection is handled, arrange into the short well pipe through the drainage basin, and through adding the heavy metal purification medicament in the dosing system to the short well pipe, the medicament is along with diffusing to the groundwater. Can repair and treat the underground water in some severely polluted areas.

Description

Sewage treatment system

Technical Field

The utility model relates to a sewage treatment device technical field especially relates to a sewage treatment system.

Background

In some areas, sewage is directly discharged without being treated, which is an important reason for overproof pollution of underground water and soil. Under the action of surface water, rainwater and the like, sewage gradually permeates underground to cause soil and underground water pollution. And causes pollution to the groundwater system along with the flowing and diffusion of the groundwater. In order to treat the polluted soil and groundwater, the polluted groundwater needs to be pumped, treated and then discharged again.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a sewage treatment system can restore and administer some groundwater by the severe contamination area.

The embodiment of the utility model provides an adopted technical scheme is: a wastewater treatment system comprising:

the long well pipe is vertically arranged in a soil layer and is divided into an upper screen pipe section, a solid pipe section and a lower screen pipe section from top to bottom, the lower part of the upper screen pipe section is lower than the underground water level, and an expansion barrier is arranged in the solid pipe section;

the device comprises a regulating tank, a heating device and a dosing device, wherein the heating device is used for heating tank water, the dosing device is used for regulating the pH value of the tank water, and the lower screen pipe section is communicated with a water inlet of the regulating tank through a first pumping pipe;

the hydrolysis tank comprises a hydrolysis tank body, a mud supplementing box and a hydrolysis tank partition plate, the hydrolysis tank partition plate is arranged in the hydrolysis tank body and divides the hydrolysis tank body into a first hydrolysis chamber and a second hydrolysis chamber, the first hydrolysis chamber is communicated with the mud supplementing box, the second hydrolysis chamber is communicated with the mud supplementing box through a mud return pipe, the mud supplementing box is communicated with the adjusting tank, and the hydrolysis tank partition plate is provided with water through holes;

the oxidation pond comprises an oxidation pond body and a filling plate attached with aerobic microorganisms, wherein an oxidation pond partition plate is arranged in the oxidation pond body and divides the oxidation pond body into a first oxidation chamber and a second oxidation chamber, the first oxidation chamber and the second oxidation chamber are communicated through a pump pipe, the filling plate is arranged in each of the first oxidation chamber and the second oxidation chamber, the first oxidation chamber is communicated with the second hydrolysis chamber, and a first aeration device for filling oxygen is arranged in each of the first oxidation chamber and the second oxidation chamber;

the degassing tank comprises a degassing tank body and a ventilation mechanism, wherein the ventilation mechanism comprises a Roots blower, a main ventilation pipe and a plurality of branch ventilation pipes, the main ventilation pipe is transversely arranged above the degassing tank body and is communicated with the Roots blower, one end of each branch ventilation pipe is communicated with the main ventilation pipe, the other end of each branch ventilation pipe extends into the degassing tank body below the liquid level, and the second oxidation chamber is communicated with a water inlet of the degassing tank body;

the device comprises a sedimentation tank, a plurality of separation devices and a degassing tank, wherein the sedimentation tank is internally provided with a plurality of separation devices in sequence, the separation devices divide the sedimentation tank into a plurality of settling tanks which are arranged in sequence, the separation devices are provided with flow channels communicated with adjacent settling tanks, and the water outlet of the degassing tank is communicated with the first settling tank;

the disinfection tank comprises a disinfection tank body, a second aeration device and a plurality of disinfection tank clapboards, wherein the disinfection tank clapboards are oppositely and alternately arranged in the disinfection tank body, one end of each disinfection tank clapboard is connected with the inner wall of the disinfection tank body, the other end of each disinfection tank clapboard downwards inclines towards the bottom of the disinfection tank body, the second aeration device is arranged in the disinfection tank body and is used for supplying ozone into the disinfection tank body, the lower part of the disinfection tank body is communicated with the last sedimentation tank, and the upper part of the disinfection tank body is communicated with a drainage tank;

the short well pipe is vertically arranged in the soil layer, a short well screen section is arranged on the short well pipe, the upper screen section is communicated with the short well screen section, and the short well pipe is communicated with a water outlet of the drainage pool through a second pumping pipe;

and the dosing system is used for adding a heavy metal purification medicament into the short well pipe.

According to the utility model discloses sewage treatment system has following beneficial effect at least:

1. the sewage treatment system is characterized in that a circulating system is formed by a long well pipe, an adjusting tank, a hydrolysis tank, an oxidation tank, a degassing tank, a sedimentation tank, a disinfection tank, a drainage tank and a short well pipe, polluted sewage is pumped to the adjusting tank through a first pumping pipe in the long well pipe, the sewage is subjected to water quality adjustment, anaerobic microorganism hydrolysis, aerobic microorganism hydrolysis oxidation, oxygen in sewage removal and decontamination, sedimentation and disinfection treatment in sequence, the polluted sewage is discharged into the short well pipe through the drainage tank, heavy metal purification agents are added into the short well pipe through a dosing system, and the agents are diffused into underground water.

2. The heating device and the dosing device arranged in the adjusting tank can adjust the temperature and the PH value of the tank water, adjust the water quality to a reasonable range, and provide a suitable environment for the addition of subsequent medicaments and the treatment of microorganisms.

3. In the pond of hydrolysising, add activated sludge, play certain purification effect to sewage through the microorganism in the activated sludge, the anaerobe degrades macromolecule organic matter in with waste water into the micromolecule organic matter, improves the biodegradability of waste water.

4. The packing plate that is attached with aerobic microorganism in the oxidation pond, aerobic bacteria will be attached to on the packing plate surface, form the biomembrane structure, and aerobic bacteria grows the reproduction, and a large amount of filamentous fungus breed simultaneously forms intensive biological net to increased the specific surface area with sewage contact, thereby the at utmost removed pollutants such as organic matter and nitrogen phosphorus in the sewage.

5. When sewage is through the degasification pond, through letting in the air to the aquatic to play the stirring effect to the water of cell body, go out the oxygen separation in the sewage, when avoiding sewage to get into the sedimentation tank, because the mud that the oxygen content too high leads to floats the phenomenon, leads to the condition of precipitation effect harmfully.

6. The sewage after hydrolysis flows into the sedimentation tank, and sediments in the sewage sequentially pass through the sedimentation tanks, so that multi-stage sedimentation is realized, and the concentration of particles in the water is reduced.

7. The sewage in the disinfection pool is disinfected by ozone, and due to the arrangement of the partition plates, the ozone enters the gas-liquid mixing area in the moving process from bottom to top and stays at the position of the gas-liquid mixing area, so that the sufficient contact time between the medical wastewater and the ozone is increased, pathogens, germs, parasites and the like in the medical wastewater are killed by utilizing the oxidability, and then the medical wastewater is discharged into a discharge pool to be discharged into underground water.

According to some embodiments of the utility model, the room bottom of second room of hydrolysising is for leaking hopper-shaped, the discharge gate of funnel with return mud pipe intercommunication.

According to some embodiments of the utility model, be provided with the agitating unit who is used for preventing the mud deposit in the benefit mud incasement.

According to some embodiments of the utility model, isolating device includes lower baffle and the last baffle that sets up along rivers flow direction interval, the lower extreme of baffle down with the bottom of sedimentation tank is connected, the upper end of baffle down with the interval sets up between the top of sedimentation tank, the upper end of going up the baffle with the top of sedimentation tank is connected, the lower extreme of going up the baffle with the interval sets up between the bottom of sedimentation tank, down the baffle with go up the baffle with form the runner of U type between the sedimentation tank.

According to some embodiments of the utility model, down the baffle with the quantity of going up the baffle is four groups, will the separation of sedimentation tank is five subsiders, and at least last a set of down the baffle with install the active carbon rose box in the runner between the last baffle.

According to some embodiments of the utility model, the second aeration equipment includes intake pipe and aeration head, the quantity of aeration head disinfection pond baffle quantity corresponds, the aeration head with intake-tube connection, each the below of disinfection pond baffle all sets up one the aeration head.

According to some embodiments of the utility model, each all be equipped with flow control valve on the branch pipe of ventilating, the person in charge of ventilating is equipped with the relief valve.

According to some embodiments of the invention, a porous packing layer is filled between the upper screen section and the short well screen section.

According to some embodiments of the utility model, the medicine system includes medicine case, medicament pump and dosing pipe, the one end and the second pump that add the dosing pipe send the pipe intercommunication, and the other end passes through medicament pump and medicine case intercommunication, the water outlet end that the second pump sent the pipe stretches into in the porous packing layer.

According to some embodiments of the utility model, inflation separation ware includes inflation gasbag and aerating device, the inflation gasbag is established in real pipe section, the inflation gasbag passes through the gas-supply pipe and the aerating device intercommunication.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a layout diagram of a sewage treatment system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of a conditioning tank;

FIG. 3 is a schematic view of the structure of a hydrolysis tank;

FIG. 4 is a schematic diagram of the construction of an oxidation cell;

FIG. 5 is a schematic view of the structure of a sedimentation tank;

FIG. 6 is a schematic view of the structure of the disinfection tank;

FIG. 7 is a schematic view of the structure of a degassing tank;

fig. 8 is a schematic view of the arrangement of a long-well pipe and a short-well pipe.

Reference numerals:

a regulating reservoir 100, a heating device 110 and a dosing device 120;

the hydrolysis tank comprises a hydrolysis tank 200, a hydrolysis tank body 210, a mud supplementing box 220, a hydrolysis tank partition 230, a first hydrolysis chamber 211, a second hydrolysis chamber 222 and a water through hole 231;

the oxidation pond 300, the oxidation pond body 310, the filling plate 320, the first oxidation chamber 311, the second oxidation chamber 312, the oxidation pond partition plate 330, the pump pipe 340 and the first aeration device 350;

the sedimentation tank 400, the sedimentation tank 410, the flow channel 420, the lower partition plate 431 and the upper partition plate 432;

the disinfection tank 500, the disinfection tank body 510, the aeration device 520, the disinfection tank partition 530, the gas-liquid mixing area 540, the air inlet pipe 521 and the aeration head 522.

A drainage basin 600;

the degassing tank 700, the degassing tank body 710, the ventilation mechanism 720, the Roots blower 721, the ventilation main pipe 722 and the ventilation branch pipe 723;

the long well pipe 800, the upper screen section 810, the solid pipe section 820, the lower screen section 830, the expansion barrier 840, the first pumping pipe 850, and the porous filler layer 860;

a short well pipe 900, a short well screen section 910, a second pumping pipe 920;

medicament box 1100, medicament pump 1200, dosing pipe 1300.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

In the sewage treatment system shown in fig. 1 and 8, the bottom of the long-well pipe 800 is located at the deepest level of the contaminant or close to the water-stop floor, and the length of the short-well pipe 900 is 1/10-1/2 of the long-well pipe 800.

During operation, the groundwater in the lower screen section 830 is pumped into the adjusting tank 100 under the action of the first pumping pipe 850, the sewage is sequentially subjected to water quality adjustment, anaerobic microorganism hydrolysis, aerobic microorganism hydrolysis oxidation, oxygen removal, precipitation and disinfection treatment in the sewage, and is discharged into the short-well pipe 900 through the drainage tank 600, and a heavy metal purifying agent is added into the short-well pipe 900 through the dosing system and is diffused into the groundwater. When pumping groundwater, the expansion barrier 840 is activated to separate the upper screen section 810 from the lower screen section 830 to prevent water convection in the upper screen section 810 and the lower screen section 830.

It should be noted that the schematic diagram of the present embodiment only shows one set of the long-well pipe 800 and the short-well pipe 900, and in practice, multiple sets need to be arranged according to the actual groundwater condition.

As shown in fig. 2, a regulating reservoir 100 is provided, and a heating device 110 for heating the reservoir water and a dosing device 120 for regulating the PH value of the reservoir water are provided in the regulating reservoir 100;

the temperature and pH of the treated water can greatly affect the use effect of subsequent medicaments. If the temperature is too low, the propagation speed of the microorganisms is relatively low, and the water in the pool is heated by the heating device, so that the propagation speed of the microorganisms is increased. The chemical adding device 120 adds chemicals or alkaline chemicals in an acidic manner, so that the pond water maintains an environment in which microorganisms are propagated.

As shown in fig. 3, the hydrolysis tank 200 includes a hydrolysis tank body 210, a mud supplementing tank 220 and a hydrolysis tank partition 230, the hydrolysis tank partition 230 is disposed in the hydrolysis tank body 210, the hydrolysis tank body 210 is divided into a first hydrolysis chamber 211 and a second hydrolysis chamber 222, the first hydrolysis chamber 211 is communicated with the mud supplementing tank 220, the second hydrolysis chamber 222 is communicated with the mud supplementing tank 220 through a mud returning pipe 240, the mud supplementing tank 220 is communicated with the adjusting tank 100, and the hydrolysis tank partition 230 is provided with water passing holes 231.

The regulated sewage firstly enters the sludge supplementing box 220, the sewage and the activated sludge are fully mixed, then the sewage and the activated sludge in the sludge supplementing box 220 are conveyed to the bottom of the first hydrolysis chamber 211 together through a water pipe, the entering sewage can disturb the sewage in the first hydrolysis chamber 211, the activated sludge is prevented from being deposited in the first hydrolysis chamber 211, the sewage enters the second hydrolysis chamber 222 through the water hole 231, the impulsive force is reduced when the sewage enters the second hydrolysis chamber 222, most of the activated sludge can be deposited at the bottom of the second hydrolysis chamber 222, and a part of the activated sludge is conveyed back to the sludge supplementing box 220 through the sludge return pipe 240, so that the reuse of the activated sludge is realized, the utilization rate of the activated sludge is improved, and the cost is reduced.

As shown in fig. 4, the oxidation pond 300 comprises an oxidation pond body 310 and a filling plate 320 attached with aerobic microorganisms, wherein an oxidation pond partition plate 330 is arranged in the oxidation pond body 310, the oxidation pond partition plate 330 divides the oxidation pond body 310 into a first oxidation chamber 311 and a second oxidation chamber 312, the first oxidation chamber 311 is communicated with the second oxidation chamber 312 through a pump pipe 340, the filling plate 320 is arranged in each of the first oxidation chamber 311 and the second oxidation chamber 312, the first oxidation chamber 311 is communicated with the second hydrolysis chamber 222, and a first aeration device 350 for filling oxygen is arranged in each of the first oxidation chamber 311 and the second oxidation chamber 312.

In the sewage after the anoxic hydrolysis, macromolecules are organically converted into micromolecular organic matters, the organic matters enter the first oxidation chamber 311 along with the sewage, after the sewage in the first oxidation chamber 311 is subjected to contact oxidation reaction, the aerobic microorganisms decompose the organic matters in the sewage through the filling plate 320 attached with the aerobic microorganisms, and the organic matters are converted into inorganic matters, so that the content of the organic matters in the sewage can be obviously reduced. After the reaction of the filling plate 320 is finished, the sewage in the first oxidation chamber 311 is poured into the second oxidation chamber 312 through the pump pipe 340 for the second treatment, so that the multistage treatment is achieved, and the treatment effect of the contact oxidation tank is greatly improved. Meanwhile, oxygen is supplied to the first oxidation chamber 311 and the second oxidation chamber 312 through the first aeration device 350, so that a large amount of oxygen is provided for the aerobic microorganisms, and the propagation efficiency of the aerobic microorganisms is improved.

As shown in fig. 7, the degassing tank 700 includes a degassing tank body 710 and a venting mechanism 720, the venting mechanism 720 includes a roots blower 721, a main venting pipe 722 and a plurality of sub venting pipes 723, the main venting pipe 722 is transversely disposed above the degassing tank body 710 and is in communication with the roots blower 721, one end of each sub venting pipe 723 is in communication with the main venting pipe 722, the other end thereof extends below the liquid level in the degassing tank body 710, and the second oxidation chamber 312 is in communication with a water inlet of the degassing tank body 710.

In the oxidation tank 300 of the upper stage, a large amount of oxygen is mixed into the sewage due to aeration, and if the oxygen is not removed into the sedimentation tank, the sludge is suspended. Resulting in poor precipitation. Sewage is through letting in the air to the aquatic in the time of degasification pond 700 to play the stirring effect to the water in the cell body, go out the oxygen separation in the sewage, when avoiding sewage to get into the sedimentation tank, because the mud that the oxygen content is too high leads to floats the phenomenon, leads to the condition of precipitation effect badness.

As shown in fig. 5, in the sedimentation tank 400, a plurality of isolation devices are sequentially arranged in the sedimentation tank 400, the plurality of isolation devices divide the sedimentation tank into a plurality of sedimentation tanks 410 which are sequentially arranged, flow channels 420 communicating with the adjacent sedimentation tanks 410 are arranged on the isolation devices, and a water outlet of the degassing tank body 710 is communicated with a first sedimentation tank 410.

As shown in fig. 6, the sterilizing tank 500 comprises a sterilizing tank body 510, an aeration device 520 and a plurality of sterilizing tank partition plates 530, wherein the sterilizing tank partition plates 530 are oppositely and alternately arranged in the sterilizing tank body 510, one end of each sterilizing tank partition plate 530 is connected with the inner wall of the sterilizing tank body 510, the other end of each sterilizing tank partition plate is inclined downwards towards the bottom of the sterilizing tank body 510, the aeration device 520 is arranged in the sterilizing tank body 510 and is used for supplying ozone into the sterilizing tank body 510, the lower part of the sterilizing tank body 510 is communicated with the last settling tank 410, and the upper part of the sterilizing tank body 510 is communicated with a drainage tank 600.

The water in the drainage pool 600 is sent to the short well pipe 900 through the second pumping pipe 920 and is then remitted into the ground water.

In some embodiments of the present invention, the bottom of the second hydrolysis chamber 222 is funnel-shaped, and the discharge port of the funnel is communicated with the mud-returning pipe 240. By funneling the chamber bottom of the second hydrolysis chamber 222, the recovery of the activated sludge can be facilitated.

In some embodiments of the present invention, a stirring device 250 for preventing sludge deposition is provided in the sludge supplement tank 220. For preventing active mud from precipitating in benefit mud case 220, through setting up agitating unit, to the stirring of benefit mud case 220 sewage for active mud and sewage mix, avoid active mud to precipitate.

In some embodiments of the present invention, the isolation device includes a lower partition 431 and an upper partition 432 which are arranged at intervals along the flowing direction of water, the lower end of the lower partition 431 is connected with the bottom of the sedimentation tank 400, the upper end of the lower partition 431 is arranged at intervals with the top of the sedimentation tank 400, the upper end of the upper partition 432 is connected with the top of the sedimentation tank 400, the lower end of the upper partition 432 is arranged at intervals with the bottom of the sedimentation tank 400, and a U-shaped flow channel is formed between the lower partition 431 and the upper partition 432 and between the sedimentation tank 400.

The sewage after aerobic decomposition flows into the settling tank 410, then flows into the next settling tank 410 through the U-shaped flow channel 420 formed by the lower partition plate 431 and the upper partition plate 432, and the flow of the U-shaped flow channel 420 is beneficial to settling of dirt particles. And then the water enters the rest interval in the same way, so that the particles are gradually settled, meanwhile, the floating objects on the water surface can be isolated, and the floating objects floating to the next settling tank 410 are reduced until the water in the last settling tank 410 reaches the settling standard, the number of the settling tanks 410 is increased or decreased according to the actual situation, the number of the settling tanks 410 can be properly reduced with good settling effect, and the number of the settling tanks 410 can be properly increased with poor settling effect.

In some embodiments of the present invention, the number of the lower partition plates 431 and the upper partition plates 432 is four, which separates the settling tank 400 into five settling tanks 410, and the flow passage 420 between at least the last group of the lower partition plates 431 and the upper partition plates 432 is provided with an activated carbon filtering tank 450.

If the activated carbon filter tank 450 is not arranged, a larger number of settling tanks 410 are required to be arranged, and the settling period is prolonged to ensure that the water reaches the settling standard. The number of the settling tanks 410 is reduced by installing the activated carbon filter boxes 450 in the flow passage 420 between the last group of the lower and

upper bulkheads

431 and 432. The water in the last settling tank 410 can be made to meet the use standard. Of course, the activated carbon filter box 450 may be disposed between the lower partition 431 and the upper partition 432 of other groups simultaneously or individually, but this increases the complexity of the apparatus and increases the cost.

As shown in fig. 6, in some embodiments of the present invention, the aeration device 520 includes an air inlet pipe 521 and aeration heads 522, the number of the aeration heads 522 corresponds to the number of the disinfection tank partitions 530, the aeration heads 522 are connected to the air inlet pipe 521, and one aeration head 522 is disposed below each disinfection tank partition 530.

In some embodiments of the present invention, an aeration head 522 is disposed below each of the disinfection tank partitions 530. So that the ozone concentration in each gas-liquid mixing zone 540 is uniform. So that the ozone in the disinfection tank is distributed more uniformly, and the water in the tank is better disinfected and sterilized.

Each sub-pipe 723 is provided with a flow regulating valve, and the main pipe 722 is provided with a pressure relief valve. When the content of oxygen in the sewage is high, the stirring amplitude is large, the flow regulating valve is adjusted to be large, the air inflow of the air supply branch pipe 723 is increased, and the pressure relief valve is adjusted to be small. On the contrary, the flow regulating valve is adjusted to be large, the pressure release valve is adjusted to be small, so that most of the wind pressure of the Roots blower is discharged from the pressure release valve, and the wind volume in the ventilation branch pipe 723 is reduced.

In some embodiments of the present invention, a porous packing layer 860 is filled between the upper screen section 810 and the short well screen section 910. The porous filler layer 860 can circulate the ground water between the long well pipe 800 and the short well pipe 900 and can enhance removal of pollutants in the water body.

The filler in the porous filler layer 860 can be artificial sieve plates, or pebbles, gravels, or porous media with pollutant removing effect, such as activated carbon adsorption material, zero-valent iron-carbon powder mixed material, zeolite, limestone, ion exchange resin, iron oxide and hydroxide, phosphate, organic material urban compost material, wood chips, etc.

In some embodiments of the present invention, the drug adding system includes a drug box 1100, a drug pump 1200 and a drug adding pipe 1300, one end of the drug adding pipe 1300 communicates with the second pumping pipe 920, the other end communicates with the drug box 1100 through the drug pump 1200, and the water outlet end of the second pumping pipe 920 extends into the porous filler layer 8600.

The medicament is reinforced microorganism bacteria and mineral salt containing nitrogen, phosphorus, potassium and organic matters, or corresponding chemical oxidant and chemical reducing agent, which are mixed in the medicament box 1100 and then injected into the porous filler layer 860, so that the medicament is mixed with liquid and the repair efficiency is improved. The flow rate of the medicament is adjusted by a dosing valve and a liquid medicine flow meter. Can be adjusted in time according to the rate of treating water.

In some embodiments of the present invention, the inflatable barrier 840 comprises an inflatable bladder and an inflator, the inflatable bladder is disposed in the solid pipe section 820, and the inflatable bladder is communicated with the inflator via a gas pipe.

When the expansion blocking device 840 works, the inflation device inflates towards the expansion air bag, and when the expansion air bag expands, the expansion air bag can be tightly attached to the solid pipe section 820 to form an annular closed space, so that direct convection of gas and liquid between the upper screen pipe section 810 and the lower screen pipe section 830 in the solid pipe section 820 is effectively blocked.

Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. A wastewater treatment system, comprising:

2. The wastewater treatment system according to claim 1, wherein: the chamber bottom of the second hydrolysis chamber is funnel-shaped, and a discharge hole of the funnel is communicated with the mud return pipe.

3. The sewage treatment system of claim 1 or 2, wherein: and a stirring device for preventing sludge deposition is arranged in the sludge supplementing box.

4. The wastewater treatment system according to claim 1, wherein: the isolating device comprises a lower baffle and an upper baffle which are arranged at intervals along the flowing direction of water flow, the lower end of the lower baffle is connected with the bottom of the sedimentation tank, the upper end of the lower baffle is arranged at intervals between the tops of the sedimentation tank, the upper end of the upper baffle is connected with the top of the sedimentation tank, the lower end of the upper baffle is arranged at intervals between the bottoms of the sedimentation tank, and the lower baffle is arranged with the upper baffle and a U-shaped flow passage is formed between the sedimentation tanks.

5. The wastewater treatment system according to claim 4, wherein: the number of the lower partition plates and the upper partition plates is four, the sedimentation tank is divided into five sedimentation tanks, and an activated carbon filter box is arranged in a flow passage between the lower partition plate and the upper partition plate in at least the last group.

6. The wastewater treatment system according to claim 1, wherein: the second aeration device comprises an air inlet pipe and aeration heads, the number of the aeration heads corresponds to the number of the disinfection tank partition plates, the aeration heads are connected with the air inlet pipe, and one aeration head is arranged below each disinfection tank partition plate.

7. The wastewater treatment system according to claim 1, wherein: each branch pipe is provided with a flow regulating valve, and the main pipe is provided with a pressure release valve.

8. The wastewater treatment system according to claim 1, wherein: and a porous packing layer is filled between the upper screen pipe section and the short well screen pipe section.

9. The wastewater treatment system according to claim 7, wherein: the dosing system comprises a chemical box, a chemical pump and a dosing pipe, one end of the dosing pipe is communicated with the second pumping pipe, the other end of the dosing pipe is communicated with the chemical box through the chemical pump, and the water outlet end of the second pumping pipe extends into the porous filler layer.

10. The wastewater treatment system according to claim 1, 8 or 9, wherein: the inflatable barrier comprises an inflatable air bag and an inflating device, the inflatable air bag is arranged in the solid pipe section, and the inflatable air bag is communicated with the inflating device through an air conveying pipe.