CN113943084A

CN113943084A - Integration MBBR sewage treatment plant

Info

Publication number: CN113943084A
Application number: CN202111354352.3A
Authority: CN
Inventors: 谢德强
Original assignee: Chengdu Kerui Environmental Protection Engineering Co ltd
Current assignee: Chengdu Kerui Environmental Protection Engineering Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-01-18

Abstract

The invention discloses an integrated MBBR sewage treatment device, which comprises an adjusting tank, an MBBR tank and a sedimentation tank which are connected in sequence; a pH adjusting unit is arranged in the adjusting tank, the pH adjusting unit comprises an online pH detector and a feeding device, the feeding device comprises a feeder and a head tank, the feeder is communicated with a feed inlet of the head tank, a stirrer is arranged in the head tank, a discharging pipe is arranged at the lower part of the head tank, an outlet of the discharging pipe extends into the adjusting tank, and a discharging control valve is arranged on the discharging pipe; a latticed aeration platform is arranged in the MBBR tank, an aeration device is arranged on the aeration platform, a latticed blocking net is arranged above the aeration platform, the MBBR tank is filled with MBBR fillers, and the MBBR fillers are positioned between the aeration platform and the blocking net; be equipped with a plurality of isolating device in the sedimentation tank in proper order, a plurality of isolating device separate the sedimentation tank for a plurality of subsiders of arranging in proper order, and the last runner that communicates adjacent subsider that is equipped with of isolating device, each subsider all is connected with the mud pipe.

Description

Integration MBBR sewage treatment plant

Technical Field

The invention relates to sewage treatment equipment, in particular to an integrated MBBR sewage treatment device.

Background

Moving-Bed Biofilm Reactor (MBBR) is another new type of Biofilm Reactor which has recently been regarded by researchers and developed for solving the complex operations of regular back flushing of a fixed Bed Reactor, fluidization of a fluidized Bed, blockage of a submerged biofilter, cleaning of filter materials and replacement of an aerator.

The core part is that suspended filler with the density close to water is added into an aeration tank to be used as a microorganism active carrier, the microorganism active carrier is in a fluidized state under the actions of aeration in the aeration tank and lifting of water flow, and when microorganisms are attached to the carrier, the floating carrier freely moves in the aeration tank along with the convolution and turning action of mixed liquid, so that the aim of sewage treatment is fulfilled. The main principle is that after sewage continuously flows through a reactor filler carrier, a biological film is formed on the carrier, and microorganisms propagate and grow on the biological film in a large quantity and degrade organic pollutants in the sewage, so that the sewage is purified.

When the MBBR technology is adopted for sewage treatment, the normal propagation of microorganisms has great influence on the efficiency of water treatment, the growth of the microorganisms is greatly influenced by the pH value and the water temperature of water quality, and the propagation efficiency of the microorganisms can be greatly reduced when the pH value and the water temperature are lower or higher, so that the degradation efficiency of the microorganisms is greatly reduced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an integrated MBBR sewage treatment device which can improve the sewage treatment efficiency.

In order to achieve the purpose of the invention, the invention adopts the technical scheme that:

the integrated MBBR sewage treatment device comprises a regulating tank, an MBBR tank and a sedimentation tank which are connected in sequence;

a pH adjusting unit is arranged in the adjusting tank, the pH adjusting unit comprises an online pH detector and a feeding device, the feeding device comprises a feeder and a head tank, the feeder is communicated with a feed inlet of the head tank, a stirrer is arranged in the head tank, a discharging pipe is arranged at the lower part of the head tank, an outlet of the discharging pipe extends into the adjusting tank, and a discharging control valve is arranged on the discharging pipe;

a latticed aeration platform is arranged in the MBBR tank, an aeration device is arranged on the aeration platform, a latticed blocking net is arranged above the aeration platform, the MBBR tank is filled with MBBR fillers, and the MBBR fillers are positioned between the aeration platform and the blocking net;

be equipped with a plurality of isolating device in the sedimentation tank in proper order, a plurality of isolating device separate the sedimentation tank for a plurality of subsiders of arranging in proper order, and the last runner that communicates adjacent subsider that is equipped with of isolating device, each subsider all is connected with the mud pipe.

Further: a liquid level meter is arranged in the regulating tank.

Further: and a sewage inlet pipe is arranged on the adjusting tank, a sewage outlet pipe is arranged on the sedimentation tank, and a water inlet control valve is arranged on the sewage inlet pipe.

Further: the equalizing basin still includes heating unit, and heating unit includes outside steam line and heating coil, and heating coil sets up in the equalizing basin to be linked together with outside steam line, be equipped with steam flow valve and manometer on the outside steam line.

Further: the equalizing basin still includes the PLC controller, and the input of PLC controller is connected with level gauge, online pH detector and temperature sensor respectively, and the output of PLC controller is connected with water control valve, unloading control valve, steam flow valve respectively.

Further: the MBBR pond is equipped with the toper bottom of the pool, is equipped with the blow off pipe on the toper bottom of the pool.

Further: the isolating device comprises a lower baffle plate and an upper baffle plate which are arranged at intervals along the flowing direction of water flow, and a U-shaped flow passage is formed between the lower baffle plate and the sedimentation tank as well as between the upper baffle plate and the sedimentation tank.

Further: an active carbon filter box is arranged in a flow passage between the lower partition plate and the upper partition plate.

The invention has the beneficial effects that:

the device can realize the regulation of the pH value, the water temperature and the water inlet and outlet quantity of the sewage, so that all indexes of the sewage meet the requirements of subsequent biochemical treatment, the regulation of multiple indexes can be realized simultaneously by one device, the defect that all indexes need to be regulated through multiple programs is overcome, the sewage treatment program can be simplified, the sewage treatment efficiency is improved, and the sewage treatment cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Wherein: 1. a regulating tank; 2. an MBBR pool; 3. a sewage inlet pipe; 4. a water inlet control valve; 5. a liquid level meter; 6. an on-line pH meter; 7. a material loading device; 8. a head tank; 9 a stirrer; 10. a discharging pipe; 11. a blanking control valve; 12. a steam line; 13. a heating coil; 14. a steam flow valve; 15. a pressure gauge; 16. a temperature sensor; 17, a sedimentation tank; 18. the bottom of the pool; 19. a blow-off pipe; 20. an aeration platform; 21. an aeration device; 22. blocking; 23. MBBR filler; 24. an upper partition plate; 25. a lower partition plate; 26. a settling tank; 27. a flow channel; 28. an activated carbon filter box; 29. a sewage outlet pipe; 30. a sludge discharge pipe.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.

Examples

As shown in fig. 1, the integrated MBBR sewage treatment plant according to the embodiment of the present invention includes a regulating tank 1, an MBBR tank 2, and a settling tank 17, which are connected in sequence; be equipped with sewage inlet tube 3 on the equalizing basin 1, be equipped with into water control valve 4 on the sewage inlet tube 3, be equipped with level gauge 5 and pH adjusting unit in the equalizing basin 1, pH adjusting unit includes online pH detection meter 6 and feeding device, online pH detection meter 6 sets up in equalizing basin 1, feeding device includes glassware 7 and elevated tank 8, it is linked together with the feed inlet of elevated tank 8 to go up glassware 7, be equipped with agitator 9 in the elevated tank 8, the lower part of elevated tank 8 is equipped with unloading pipe 10, the export of unloading pipe 10 extends to in the equalizing basin 1, be equipped with unloading control valve 11 on the unloading pipe 10.

The adjusting tank 1 further comprises a heating unit and a temperature sensor 16, the heating unit comprises an external steam pipeline 12 and a heating coil 13, the heating coil 13 is arranged in the adjusting tank 1 and communicated with the external steam pipeline 12, and a steam flow valve 14 and a pressure gauge 15 are arranged on the external steam pipeline 12. The adjusting tank 1 further comprises a PLC, the input end of the PLC is respectively connected with the liquid level meter 5, the online pH detector 6 and the temperature sensor 16, and the output end of the PLC is respectively connected with the water inlet control valve 4, the blanking control valve 11 and the steam flow valve 14.

MBBR pond 2 is equipped with toper bottom of the pool 18, the bottom of the pool sets up to the toper, mud is concentrated the deposit and is convenient for discharge, be equipped with blow off pipe 19 on the toper bottom of the pool 18, MBBR pond bottom of the pool 18 top is equipped with latticed aeration platform 20, aeration equipment 21 is installed to aeration platform 20, aeration platform 20 top is equipped with latticed block 22, MBBR pond 2 intussuseption is filled with MBBR filler 23, MBBR filler 23 is located between aeration platform 20 and the block 22, the diameter of MBBR filler 23 is greater than the aperture of aeration platform 20 and block 22, avoid MBBR filler 23 to pass aeration platform 20 or block 22. The aeration platform 20 and the barrier net 22 are made of stainless steel materials, and are rust-proof and corrosion-proof.

A plurality of isolating devices are sequentially arranged in the sedimentation tank 17, the sedimentation tank 17 is divided into a plurality of sedimentation tanks 26 which are sequentially arranged by the isolating devices, each sedimentation tank 26 is connected with a sludge discharge pipe 30, and a sewage outlet pipe 29 is arranged on the last sedimentation tank 26. The isolating device is provided with a flow channel 27 for communicating the adjacent settling tanks 26, specifically, the isolating device comprises a lower baffle plate 25 and an upper baffle plate 24 which are arranged at intervals along the flowing direction of water flow, the lower end of the lower baffle plate 25 is connected with the bottom of the settling tank, an interval is reserved between the upper end of the lower baffle plate 25 and the top of the settling tank 17, the upper end of the upper baffle plate 24 is connected with the top of the settling tank 17, an interval is reserved between the lower end of the upper baffle plate 24 and the bottom of the settling tank, and a U-shaped flow channel 27 is formed between the lower baffle plate 25 and the settling tank 17 as well as between the upper baffle plate 24 and the settling tank 17.

In a further embodiment of the invention, an activated carbon filter box 28 is provided in the flow passage 27 between the lower partition 25 and the upper partition 24.

The working principle is as follows: sewage to be treated is introduced into the adjusting tank 1 through the sewage inlet pipe 3, and the water inflow of the sewage can be controlled through the water inlet control valve 4. The on-line pH detector 6 detects the pH value of the sewage, judges whether the pH adjustment is needed according to the result, selects proper acid or liquid alkali as a pH regulator if needed, adds the pH regulator into the head tank 8 through the feeder 7, starts the stirrer 9 to stir the pH regulator uniformly if the selected pH regulator is a mixture, then adds the pH regulator into the adjusting tank 1 through the blanking pipe 10, adjusts the amount of the added pH regulator through the blanking control valve 11, and can adjust the pH value of the sewage in the adjusting tank 1 at any time according to the detection result of the on-line pH detector 7.

But the temperature of the interior sewage of temperature sensor 16 real-time supervision equalizing basin 1, when sewage temperature is lower, open outside steam pipe 12, make in steam gets into heating tube dish 13, heat the sewage in the equalizing basin 1 through heating tube dish 13, avoid influencing subsequent treatment effect because of sewage temperature is lower, control the flow of steam through steam flow valve 14, and then adjust the heating temperature of sewage, the manometer is used for monitoring the pressure of steam in outside steam pipe 12.

Through the comprehensive adjusting process, each index of the sewage in the adjusting tank 1 is adjusted to the standard required by the subsequent biochemical treatment and then is discharged into the MBBR tank 2, the water quantity of the sewage in the adjusting tank 1 is monitored by the liquid level meter 6 in real time, the accurate control of the water quantity of the sewage in the adjusting tank 1 can be realized, water is fed or discharged in due time, and the sewage in the adjusting tank 1 can be prevented from overflowing the tank and evacuating the equipment.

The MBBR filler 23 and water are in a completely mixed state during aeration, the MBBR filler 23 is used as a microorganism active carrier, the microorganism growth environment is a gas phase, a liquid phase and a solid phase, and the collision and shearing action of the MBBR filler 23 in the water enables air bubbles to be finer, so that the utilization rate of oxygen is increased, and the purpose of sewage treatment is achieved. The water on the upper part of the MBBR tank 2 overflows to a sedimentation tank 17 through a pipeline, and sludge is accumulated at the bottom 18 of the MBBR tank and is discharged through a sewage discharge pipe 19 of the MBBR tank.

The sewage after degradation treatment flows into the settling tank 26, then flows into the next settling tank 26 through the U-shaped flow channel 27 formed by the lower partition plate 25 and the upper partition plate 24, and the U-shaped flow channel 27 is beneficial to settling 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 26 are reduced until the water in the last settling tank 26 reaches the settling standard, the number of the settling tanks 26 is increased or decreased according to the actual situation, the number of the settling tanks 26 can be properly reduced due to good settling effect, and the number of the settling tanks 26 can be properly increased due to poor settling effect. Through the plurality of settling tanks 26, multi-stage settling is achieved, reducing the concentration of dirt particles in the water. The sediment such as sludge deposited at the bottom of the settling tank 26 is discharged through a sludge discharge pipe 30, and the sludge is subjected to harmless treatment by other equipment.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An integrated MBBR sewage treatment device is characterized by comprising a regulating tank (1), an MBBR tank (2) and a sedimentation tank (17) which are connected in sequence; a sewage inlet pipe (3) is arranged on the adjusting tank (1), a sewage outlet pipe (29) is arranged on the sedimentation tank (17), and a water inlet control valve (4) is arranged on the sewage inlet pipe (3);

a pH adjusting unit is arranged in the adjusting tank (1), the pH adjusting unit comprises an online pH detector (6) and a feeding device, the feeding device comprises a feeder (7) and an elevated tank (8), the feeder (7) is communicated with a feed inlet of the elevated tank (8), a stirrer (9) is arranged in the elevated tank (8), a discharging pipe (10) is arranged at the lower part of the elevated tank (8), an outlet of the discharging pipe (10) extends into the adjusting tank (1), and a discharging control valve (11) is arranged on the discharging pipe (10);

a latticed aeration platform (20) is arranged in the MBBR tank (2), an aeration device (21) is arranged on the aeration platform (20), a latticed barrier net (22) is arranged above the aeration platform (20), the MBBR tank (2) is filled with MBBR fillers (23), and the MBBR fillers (23) are positioned between the aeration platform (20) and the barrier net (22);

be equipped with a plurality of isolating device in proper order in sedimentation tank (17), it is a plurality of isolating device separates sedimentation tank (17) for a plurality of subsiders (26) of arranging in proper order, the last runner (27) that communicate adjacent subsider (26) that are equipped with of isolating device, each subsider (26) all are connected with row mud pipe (30).

2. The integrated MBBR sewage treatment plant of claim 1, wherein: a liquid level meter (5) is arranged in the adjusting tank (1).

3. The integrated MBBR sewage treatment plant of claim 1, wherein: equalizing basin (1) still includes heating unit, heating unit includes outside steam line (12) and heating coil (13), heating coil (13) set up in equalizing basin (1), and with outside steam line (12) are linked together, be equipped with steam flow valve (14) and manometer (15) on outside steam line (12).

4. The integrated MBBR sewage treatment plant of claim 1, wherein: the adjusting tank (1) further comprises a PLC, the input end of the PLC is respectively connected with the liquid level meter (5), the online pH detection meter (6) and the temperature sensor (16), and the output end of the PLC is respectively connected with the water inlet control valve (4), the blanking control valve (11) and the steam flow valve (14).

5. The integrated MBBR sewage treatment plant of claim 1, wherein: the MBBR tank (2) is provided with a conical tank bottom (18), and a sewage discharge pipe (19) is arranged on the conical tank bottom (18).

6. The integrated MBBR sewage treatment plant of claim 1, wherein: the isolating device comprises a lower baffle plate (25) and an upper baffle plate (24) which are arranged at intervals along the flowing direction of water flow, the lower end of the lower baffle plate (25) is connected with the bottom of the sedimentation tank, a distance is reserved between the upper end of the lower baffle plate (25) and the top of the sedimentation tank (17), the upper end of the upper baffle plate (24) is connected with the top of the sedimentation tank (17), and a distance is reserved between the lower end of the upper baffle plate (24) and the bottom of the sedimentation tank.

7. The integrated MBBR sewage treatment plant of claim 6, wherein: an active carbon filter box (28) is arranged in a flow passage (27) between the lower partition plate (25) and the upper partition plate (24).