CN113666584A

CN113666584A - Tubular JBR biomembrane sewage treatment device

Info

Publication number: CN113666584A
Application number: CN202111054592.1A
Authority: CN
Inventors: 柏斌; 江霞; 连清林; 余明; 邹玲珍; 蔡华
Original assignee: Hainan Tianhong Municipal Design Co ltd
Current assignee: Hainan Tianhong Municipal Design Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2021-11-19

Abstract

The invention discloses a tubular JBR (joint bio-membrane bioreactor) sewage treatment device, which comprises: the grid well, the adjusting tank, the JBR equipment and the mud storage tank are connected in sequence; the JBR equipment comprises: the device comprises a shell, a submersible sewage pump and an ejector; six functional areas, namely a biological reaction area, a flow guide area, a sedimentation area, a mixing area, a flocculation area and a phosphorus removal area, are sequentially arranged in the shell; the flow guide area is adjacent to the biological reaction area and is positioned in the first side of the precipitation area, a water inlet at the top of the flow guide area is lower than the preset liquid level of the biological reaction area, and a water outlet at the bottom of the flow guide area is communicated with the bottom of the precipitation area; the ejector is arranged in the biological reaction area. In the scheme, the processes of impurity removal, uniform mixing and purification of the sewage can be realized through the sequential connection design of the grid well, the regulating tank and the JBR equipment, so that the purification treatment effect of the sewage can be further ensured; in addition, the scheme is based on the design of six functional areas of the JBR equipment, and the effluent of the JBR equipment can meet the requirements of a first-level A standard or a first-level standard.

Description

Tubular JBR biomembrane sewage treatment device

Technical Field

The invention relates to the technical field of sewage treatment devices, in particular to a tubular JBR (joint bio-membrane bioreactor) sewage treatment device.

Background

At present, the JBR technology is adopted by tubular JBR equipment, and the integrated purification treatment of sewage can be realized.

However, before the sewage enters the tubular JBR device, some preliminary preparation processes, such as impurity removal and water quality adjustment, are lacked, which also has a certain influence on the sewage purification treatment effect; and the effluent of the current JBR equipment still can not meet the requirements of a secondary standard or a tertiary standard.

Disclosure of Invention

In view of the above, the invention provides a tubular JBR (joint bio-membrane bioreactor) sewage treatment device, which can realize the processes of impurity removal, uniform mixing and purification of sewage through the sequential connection design of a grid well, a regulating tank and JBR equipment, so that the purification treatment effect of the sewage can be further ensured; in addition, the design of each functional area of the JBR equipment is based on, and the effluent of the JBR equipment can meet the requirements of secondary standards or tertiary standards.

In order to achieve the purpose, the invention provides the following technical scheme:

a tubular JBR biofilm sewage treatment plant, comprising: the grid well, the adjusting tank, the JBR equipment and the mud storage tank are connected in sequence;

the JBR device includes: a shell and an ejector; a biological reaction zone, a flow guide zone and a sedimentation zone are sequentially arranged in the shell;

the flow guide area is adjacent to the biological reaction area and is positioned in the first side of the sedimentation area, a water inlet at the top of the flow guide area is lower than the preset liquid level of the biological reaction area, and a water outlet at the bottom of the flow guide area is communicated with the bottom of the sedimentation area; the ejector is arranged in the biological reaction zone.

Preferably, the flow guiding region comprises: the first partition plate and the second partition plate are respectively arranged in the shell along the vertical direction; the first partition plate and the second partition plate are distributed in parallel;

the first clapboard is adjacent to the biological reaction zone, and the top end of the first clapboard is lower than the preset liquid level of the biological reaction zone; the top end of the second partition plate is higher than the preset liquid level of the biological reaction zone, a gap is formed between the top end of the second partition plate and the top wall of the shell, and a gap is formed between the bottom end of the second partition plate and the bottom wall of the shell.

Preferably, a gap is formed between the bottom end of the first partition plate and the bottom wall of the shell;

the JBR device further comprises:

the inclined plate is arranged at the bottom of the settling zone and is positioned below the first partition plate and the second partition plate; the inclined plate is inclined toward the direction of the first side of the settling zone.

Preferably, the inclination angle of the swash plate is 50 °.

Preferably, the inclined plate is arranged at the bottom of the settling zone in a spanning mode; the top of swash plate is higher than the bottom of second baffle, the bottom with the bottom of first baffle aligns from top to bottom, and with the diapire of casing links to each other.

Preferably, the second separator includes:

a vertical plate portion;

the bottom end of the vertical plate part is connected with the bottom end of the vertical plate part and is perpendicular to the bent plate part of the inclined plate.

Preferably, a disinfection pool is further included; the water inlet of the disinfection tank is connected with the water outlet of the JBR equipment;

a mixing zone, a flocculation zone and a phosphorus removal zone are sequentially arranged in the shell; the mixing area is located above the second side of the settling area, the flocculation area is located below the second side of the settling area, the top inlet of the mixing area is lower than the preset liquid level of the settling area, the bottom outlet of the mixing area is communicated with the top of the flocculation area, and the side of the flocculation area is communicated with the bottom of the phosphorus removal area.

Preferably, the mixing zone comprises: the third partition plate and the fourth partition plate are respectively arranged in the shell along the vertical direction; the third partition plate and the fourth partition plate are distributed in parallel;

the JBR device further comprises: the fifth clapboard is arranged in the shell along the vertical direction and is positioned between the flocculation area and the phosphorus removal area;

the third partition plate is adjacent to the settling zone, the top end of the third partition plate is lower than the preset liquid level of the settling zone, and the bottom end of the third partition plate is connected with the top end of the inclined plate; the top end of the fourth clapboard is higher than the preset liquid level of the settling zone; the top end of the fifth partition board is adjacent to the bottom end of the fourth partition board, the bottom end of the fifth partition board is connected with the bottom wall of the shell, and the five partition boards are provided with through holes.

Preferably, the fifth partition is disposed obliquely toward the flocculation zone.

Preferably, the method further comprises the following steps:

a bio-rope disposed within the bio-reaction zone; the biological rope is made of polypropylene fibers.

According to the technical scheme, the tubular JBR biomembrane sewage treatment device provided by the invention has the advantages that the processes of impurity removal, uniform mixing and purification of sewage can be realized through the sequential connection design of the grid well, the regulating tank and the JBR equipment, so that the purification treatment effect of the sewage can be further ensured; in addition, the design of each functional area of the JBR equipment is based on, and the effluent of the JBR equipment can meet the requirements of secondary standards or tertiary standards.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a hydraulic flow chart of a tubular JBR biofilm sewage treatment device provided by an embodiment of the invention;

FIG. 2 is a hydraulic flow chart of a tubular JBR biofilm sewage treatment plant provided by another embodiment of the invention;

FIG. 3 is a top view of a JBR device according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line 1-1 of FIG. 3;

FIG. 5 is a top view of a JBR device according to another embodiment of the present invention;

fig. 6 is a cross-sectional view of fig. 5 taken along line 1-1.

Wherein T1 is a grid well, T2 is a regulating tank, T3 is a mud storage tank, T4 is JBR equipment, T5 is a disinfection tank, W is a gravity sewage pipe, YW is a pressure sewage pipe, Wq is a treated clean water pipe, PN is a mud discharge pipe, and WH is a supernatant return pipe;

i is a biological reaction zone, II is a diversion zone, III is a precipitation zone, IV is a mixing zone, V is a flocculation zone, and VI is a phosphorus removal zone;

the device comprises a jet device, a submersible sewage pump and a biological rope;

1 is the inlet tube, 2 is the breather pipe, 3 is the cable pipe, 4 is the breathing pipe, 5 is the pressurized-water line, 6 is with the pencil, 7 is the outlet pipe, 8 is the perforation sludge discharge pipe, 9 is the grid, 10 is first baffle, 11 is the second baffle, 11.1 is vertical plate portion, 11.2 is the board portion of bending, 12 is the swash plate, 13 is the third baffle, 14 is the fourth baffle, 15 is the fifth baffle, 15.1 is the through-hole, 16 is the elevator pump, 17 is the earthing.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The tubular JBR biofilm sewage treatment apparatus provided by the embodiment of the present invention, as shown in fig. 1, includes: the device comprises a grid well T1, a regulating pool T2, JBR equipment T4 and a mud storage pool T3 which are connected in sequence;

JBR device T4 includes: a shell and an ejector; a biological reaction zone I, a diversion zone II and a sedimentation zone III are sequentially arranged in the shell;

the diversion area II is adjacent to the biological reaction area I and is positioned in the first side of the precipitation area III, a water inlet at the top of the diversion area II is lower than the preset liquid level of the biological reaction area I, and a water outlet at the bottom of the diversion area II is communicated with the bottom of the precipitation area III; the jet device is arranged in the biological reaction area I.

It is easy to understand that the scheme leads the liquid to flow into the diversion area II from the biological reaction area I in a liquid level overflow mode and then flow into the bottom of the sedimentation area III from the bottom of the diversion area II; the design of this scheme based on above-mentioned three functional areas can help making the play water of JBR equipment satisfy the requirement of second grade standard or tertiary standard. Certainly, as shown in fig. 4, the JBR device T4 further includes a submersible sewage pump (c) disposed in the biological reaction zone i, and a water outlet of the submersible sewage pump is connected to a water inlet of the jet device (i). In addition, the device has the following technical treatment flows:

before sewage enters a station, a mud trap (not shown in figure 1) is required to be arranged at the tail end of a sewage pipeline, the sewage enters the station and enters a grid well T1 to remove floating objects and larger particle impurities (sand setting) in the water, then flows into a regulating tank T2 by gravity to be mixed, and after the water quantity and the water quality are uniform, the sewage enters JBR equipment T4 through a lift pump 16 to be treated, and the discharged water reaches the standard and is discharged. Residual sludge in the JBR equipment T4 flows to a sludge storage tank T3 by gravity, supernatant in the sludge storage tank T3 flows back to a regulating tank T2, and the sludge is periodically transported and disposed.

According to the technical scheme, the tubular JBR biomembrane sewage treatment device provided by the embodiment of the invention has the advantages that the processes of impurity removal, uniform mixing and purification of sewage can be realized through the sequential connection design of the grid well, the regulating tank and the JBR equipment, so that the purification treatment effect of the sewage can be further ensured; in addition, the design of each functional area of the JBR equipment is based on, and the effluent of the JBR equipment can meet the requirements of secondary standards or tertiary standards.

Specifically, as shown in fig. 4, the flow guiding area ii includes: a first partition plate 10 and a second partition plate 11 respectively disposed in the housing in a vertical direction; the first partition board 10 and the second partition board 11 are distributed in parallel;

the first partition plate 10 is adjacent to the biological reaction zone I, and the top end of the first partition plate is lower than the preset liquid level of the biological reaction zone I; the top of second baffle 11 is higher than the liquid level of predetermineeing of biological reaction district I, and is equipped with the clearance with the roof of casing, is equipped with the clearance between the bottom of second baffle 11 and the diapire of casing, is convenient for realize the intercommunication of II bottom exports in diversion district and III bottoms in sedimentation zone. That is to say, this scheme is through the design of just the height dislocation side by side of two baffles to having formed that the top entry is in the vertical water conservancy diversion seam of low level, bottom export can communicate III bottoms in settling zone, this peculiar water conservancy diversion seam can be so that solid phase (mud), liquid phase (water) and gaseous phase (nitrogen gas, air etc.) realize the three-phase separation, thereby quickening reaction rate, promotion reaction process. Specifically, sewage enters from an inlet at the top of the diversion slit and flows from top to bottom, and the effect of controlling the water flow speed is also achieved; of course, both side ends of each partition board are respectively connected with both side walls of the housing in a one-to-one correspondence manner, and the same applies to the partition boards hereinafter.

Further, as shown in fig. 4, a gap is formed between the bottom end of the first partition board 10 and the bottom wall of the housing, so that the bottom of the biological reaction zone i is communicated with the bottom of the sedimentation zone iii;

JBR device T4 further includes:

the inclined plate 12 is arranged at the bottom of the settling zone III and is positioned below the first partition plate 10 and the second partition plate 11; the inclined plate 12 is inclined in the direction of the first side of the settling zone iii. This scheme is so designed to make the mud that flows into III bottoms in settling zone flow back to the bottom of biological reaction district I, be convenient for unify the emission again, also realized the effect that mud relied on the automatic backward flow of dead weight, not only retrencied JBR equipment T4's inner structure, but also saved the cost of installation mud backwash pump. In addition, the sloping plate 12 in this scheme is the smooth mud board promptly, aims at realizing the backward flow of mud. Certainly, the bottom of the biological reaction zone I is provided with a sludge discharge pipe.

Furthermore, in order to ensure that the sludge obtains better backflow effect; preferably, as shown in fig. 4, the inclination angle of the swash plate 12 is 50 °.

In the scheme, in order to ensure that the sludge at the bottom of the settling zone III completely flows back to the biological reaction zone I, the sludge is conveniently and uniformly discharged; accordingly, as shown in fig. 4, the inclined plate 12 is arranged at the bottom of the settling zone iii in a spanning manner; that is, the inclined plate 12 covers the bottom of the settling zone iii; in addition, in order to avoid the sludge backflow omission, the sludge coming out of the diversion area II can be ensured to be completely refluxed to the biological reaction area I; accordingly, as shown in fig. 4, the inclined plate 12 has a top end higher than a bottom end of the second partition plate 11, and a bottom end aligned up and down with a bottom end of the first partition plate 10 and connected to the bottom wall of the casing.

In particular, in order to better guide the return flow of the sludge; accordingly, as shown in fig. 4, the second partition plate 11 includes:

a vertical plate portion 11.1;

is connected to the bottom end of the vertical plate part 11.1 and is perpendicular to the bent plate part 11.2 of the inclined plate 12.

Further, as shown in fig. 2, the tubular JBR biofilm sewage treatment apparatus provided by the embodiment of the present invention further includes a disinfection tank T5; wherein, the water inlet of the disinfection tank T5 is connected with the water outlet of JBR equipment T4;

a mixing zone IV, a flocculation zone V and a phosphorus removal zone VI are also sequentially arranged in the shell; the mixing zone IV is positioned above the second side of the settling zone III, the flocculation zone V is positioned below the second side of the settling zone III, the top inlet of the mixing zone IV is lower than the preset liquid level of the settling zone III, the bottom outlet is communicated with the top of the flocculation zone V, and the side part of the flocculation zone V is communicated with the bottom of the dephosphorization zone VI. That is to say, this scheme has add mixing zone IV, flocculation area V, dephosphorization district VI and disinfection pond T5 on the basis of original structure, and in this way, help making the play water of JBR equipment T4 can satisfy the requirement of one-level A standard or one-level standard, that is to say, this scheme passes through six functional areas and disinfection pond T5 of JBR equipment T4, helps making the play water of JBR equipment T4 can satisfy the requirement of one-level A standard or one-level standard. In addition, this scheme is through the mode of liquid level overflow equally for liquid flows into mixing area IV from settling zone III, and the design of each functional area still has characteristics such as compact structure, structural distribution are reasonable in this scheme moreover.

Still further, as shown in fig. 4 and 6, the mixing zone iv includes: a third partition plate 13 and a fourth partition plate 14 respectively provided in the housing in the vertical direction; the third partition plate 13 and the fourth partition plate 14 are distributed in parallel;

JBR device T4 further includes: the fifth partition plate 15 is arranged in the shell along the vertical direction and is positioned between the flocculation zone V and the dephosphorization zone VI;

the third partition plate 13 is adjacent to the settling zone III, the top end of the third partition plate is lower than the preset liquid level of the settling zone III, and the bottom end of the third partition plate is connected with the top end of the inclined plate 12; the top end of the fourth clapboard 14 is higher than the preset liquid level of the sedimentation zone III; the top of the fifth partition plate 15 is connected with the bottom of the fourth partition plate 14, the bottom of the fifth partition plate is connected with the bottom wall of the shell, and the five partition plates 15 are provided with through holes 15.1, so that the side part of the flocculation area V is conveniently communicated with the bottom of the dephosphorization area VI. In the scheme, the two partition plates are arranged in parallel and staggered in height, so that a vertical mixing seam is formed, wherein the top inlet is positioned at a low position, and the bottom outlet is communicated with the bottom of the flocculation area V, so that liquid and medicament can be mixed fully; in addition, swash plate 12 both can regard as the smooth mud board in this scheme, and the sharing of inner structure has been realized as the structural separation board of flocculation district V again, has not only improved the reuse rate of structure, has still retrencied the structure of interior functional area moreover.

In particular, in order to increase the capacity of the flocculation zone v, the flocculation of the liquid is facilitated; accordingly, as shown in fig. 6, the fifth partition 15 is disposed obliquely toward the flocculation zone v.

Further, as shown in fig. 4, the tubular JBR biofilm sewage treatment apparatus provided by the embodiment of the present invention further includes:

a biological rope arranged in the biological reaction zone I; the material of the biological rope is polypropylene fiber. That is, the biological rope is hung in the biological reaction zone I, so that an attachable place is provided for the microorganism, and the microorganism can form a biological membrane by hanging the membrane on the biological rope, so that the biochemical reaction of the sewage is better ensured; in order to consider the practicability and reliability of the biological rope, the material of the biological rope is preferably polypropylene fiber, the general diameter of the biological rope is 45mm, and two ends of the biological rope are fixed on the bracket.

The scheme is further described by combining the specific embodiment as follows:

the invention provides a tubular JBR biomembrane sewage treatment device, which is provided with a mud sinking well (not shown in the figure), a grating well and an adjusting tank at the front end, a disinfection facility (a disinfection tank) at the rear end and a mud storage tank as an auxiliary facility. Wherein, if the water is required to be the first-grade A standard or the first-grade standard, a disinfection facility can be configured, and the main body sewage treatment device (JBR equipment T4) is provided with a mixing zone, a flocculation zone, a phosphorus removal zone and a drug adding and phosphorus removal facility (adding drugs through a drug adding pipe). If the effluent water is required to be of a second-level standard or a third-level standard, the disinfection facility can be eliminated, and the main sewage treatment device is not provided with a mixing area, a flocculation area, a phosphorus removal area and a dosing and phosphorus removal facility.

That is to say, this scheme is through different process flow and sewage treatment plant combination, goes out the requirement that water can satisfy one-level A standard, one-level standard, second grade standard or tertiary standard, and is nimble convenient, and sewage treatment main part device adopts the form that immersible pump + ejector combine to provide aeration and stirring, replaces the blast aeration of fan, the noise when greatly reduced equipment operation.

Two process flow descriptions of the scheme are as follows:

(1) the effluent standard corresponding to the processes of fig. 1, fig. 3 and fig. 4 is a secondary standard or a tertiary standard:

before sewage enters a station, a mud trap well needs to be arranged at the tail end of a sewage pipeline, the sewage enters the station, enters a grid well in advance, is used for removing floating objects and larger particle impurities in water, flows to a regulating tank by gravity and is mixed, after the water quantity and the water quality are uniform, the sewage enters JBR equipment through a lifting pump for treatment, and the discharged water is discharged after reaching the standard. Residual sludge of the JBR equipment flows to a sludge storage tank by gravity, supernatant of the sludge storage tank flows back to a regulating tank, and the sludge is periodically transported and disposed.

(2) The effluent standard corresponding to the processes of fig. 2, 5 and 6 is a first-class a standard or a first-class standard:

before sewage enters a station, a mud trap well is required to be arranged at the tail end of a sewage pipeline, the sewage enters a grid well to remove floating objects and larger particle impurities in water when reaching the station, then flows into a regulating tank by gravity to be mixed, the water and the water are homogenized and enter JBR equipment for treatment by a lift pump, and the effluent is discharged after being disinfected and reaches the standard. Residual sludge of the JBR equipment flows to a sludge storage tank by gravity, supernatant of the sludge storage tank flows back to a regulating tank, and the sludge is periodically transported and disposed.

The tubular JBR biomembrane sewage treatment device provided by the invention has a certain purification effect on sewage purification, the hydraulic conditions of the tubular JBR equipment are more excellent, the manufacturing cost is cheaper, the JBR equipment of each scale can be industrially manufactured by using a new material, and aerobic, anoxic, anaerobic and phosphorus removal are completed in the same equipment.

The tubular JBR biomembrane sewage treatment device comprises a biological reaction zone, a sedimentation zone, a mixing zone, a flocculation zone and a phosphorus removal zone; wherein, the biological reaction zone is provided with a water inlet pipe and a first sludge discharge pipe, and the phosphorus removal zone is provided with a water outlet pipe and a second sludge discharge pipe.

The tubular JBR equipment can be installed in a ground type or a buried type (needing to be covered), and is suitable for areas with different climatic conditions. If high-concentration sewage such as culture sewage is mixed, the COD (chemical oxygen demand) of the original sewage is more than or equal to 500mg/L, the TN (total nitrogen) is more than or equal to 200mg/L, and the NH3-N is more than or equal to 140mg/L, a jet flow anaerobic reactor is adopted, and during operation and maintenance, the dissolved oxygen DO of the aerobic section of the functional zone I (biological reaction zone) is maintained at about 3-4 mg/L; the dissolved oxygen DO of the anoxic (facultative) section is maintained at about 0.7-2.0 mg/L; the dissolved oxygen DO of the anaerobic section is maintained at about 0.2-0.7 mg/L. The operation duration of each section is calculated according to 3:2:1 approximately, and the operation duration can be flexibly adjusted in the operation process. The flow of sewage pumped from the regulation tank to the JBR equipment must be equal to the design flow of the JBR and must not exceed 5%. And discharging the residual activated sludge to a sludge tank on time. The residual activated sludge can be used for dewatering of a sludge concentration dewatering machine, the water content of the sludge can be more than 99%, and the concentration dewatering is carried out to 80% -85%. In daily operation management, the air suction amount of the ejector is measured frequently, the air suction ratio is calculated, the dissolved oxygen concentration of each section is calculated, and the SV% of the mixed solution is measured by using a 100mL measuring cylinder.

The tubular JBR equipment provided by the invention has the advantages of simpler structure, smaller reaction volume and the like, the membrane fouling and blocking can not occur, the operation and maintenance management is more convenient, and the operation and maintenance cost is lower. Therefore, the popularization and application of the device have wider practical requirements, and the defects of the A2O device and the MBR device are avoided.

In addition, the tubular JBR equipment is different from other traditional equipment, can ensure that nitration reaction and denitrification reaction are carried out in different time periods in the same functional area, and simultaneously compared with an SBR sequencing batch bioreactor, the tubular JBR equipment can continuously feed in and discharge water and realize that the highest effluent can reach the first-class A discharge standard of pollutant discharge standard of urban sewage treatment plants.

Further, the tubular JBR device of the invention adopts a JBR (Jet-aeration Biomembrane Reactor) process, which is called as a Jet aeration Biomembrane Reactor. The JBR technology is a sewage treatment technology integrating an activated sludge process and a biofilm process; the equipment is mainly characterized in that:

firstly, the DO concentration is continuously controlled through the frequency conversion of a water pump, so that three processes of aerobic reaction, anoxic reaction and anaerobic reaction are completed in the same reactor, the advantage of short-cut nitrification is achieved, the process flow is shortened, and the energy consumption is reduced;

secondly, the adopted multifunctional ejector is oxygen supply and stirring mixing equipment, so that the mass transfer effect of oxygen is improved, and the biochemical reaction process is strengthened;

thirdly, a membrane which has large specific surface area and is special for sewage treatment and can automatically metabolize the aged biological membrane to regenerate is adopted, so that the total active biological quantity in the biological reaction area is kept relatively stable.

The above JBR is also characterized by its working principle. The control principle of the JBR is as follows:

the growth environmental conditions of aerobic bacteria, nitrobacteria and denitrifying bacteria in the biological reaction zone of the equipment are mainly 4: namely pH, temperature, alkalinity and DO. The adaptive conditions of pH and temperature are basically within the threshold value. Alkalinity: in the three reaction processes, consumption and replenishment can reach equilibrium. Only a tight control of DO is required, and the duration is given, to allow the three segments of dominant microorganisms to switch over. And (3) operating and circulating steps in the JBR equipment: aeration, stirring and standing, the running time of the method is 3:2:1 compared with the conventional method, and the method can be correspondingly adjusted according to the actual water quality standard requirements of inlet and outlet water.

The water outlet of the tubular JBR equipment can reach the first-class A discharge standard of pollutant discharge standard of urban sewage treatment plant, and a submersible pump (namely a submersible sewage pump, the same below) and an ejector are adopted to provide aeration and stirring, so that the blast aeration of a fan is replaced, and the noise generated during the operation of the equipment is greatly reduced.

And (3) equipment operation circulation step: aeration, stirring and standing.

(1) Aeration: the submersible pump is started and the electromagnetic valve is opened.

(2) Stirring: submersible pump off + solenoid valve off.

(3) Standing: submersible pump off + solenoid valve off.

Wherein, the solenoid valve is installed on the intake pipe of ejector.

The tubular JBR equipment for treating sewage is provided with a special control box, and the installation mode is determined according to the actual situation.

The processing process adopted by the invention is as follows: after the sewage is pumped to the integrated equipment from the regulating tank through a water pump, various biochemical reactions are firstly carried out in the biological reaction area of the equipment. In the area, the DO concentration is continuously controlled through the frequency conversion of a water pump, so that 3 processes of aerobic reaction, anoxic reaction and anaerobic reaction are sequentially completed in the same reactor, the advantage of short-cut nitrification is achieved, the process flow is shortened, and the energy consumption is reduced. Specifically, when the aeration is started, the organic matters in the water are reduced due to ammonia nitrogen formed by ammoniation reaction; when the aeration is stopped and the stirring is started, the water quality is fully mixed, the dissolved oxygen content in the equipment is gradually reduced, and the ammonia nitrogen starts to carry out nitration reaction to form nitrate nitrogen; when the aeration and the stirring are stopped, the water body tends to be in a standing state, the dissolved oxygen content is reduced to be below 0.7mg/L, at the moment, anaerobic microorganisms in the water body start denitrification reaction, nitrate nitrogen is converted into nitrogen and is discharged to the atmosphere in a gas form, and thus, denitrification is carried out.

In the biological reaction zone, besides the effect of the free activated sludge, the biological rope hung in the biological reaction zone provides an attachable place for microorganisms. Therefore, the microorganisms can form a biological film on the biological rope, and due to the concentration difference of dissolved oxygen in the biological film, the attached microorganisms also carry out nitrification reaction for reducing ammonia nitrogen and denitrification reaction for reducing total nitrogen.

The sewage treated in the reaction area flows to the precipitation area through the flow guide area. In the diversion area, the special diversion slit can realize three-phase separation of solid phase (sludge), liquid phase (water) and gas phase (nitrogen, air and the like), accelerate the reaction rate and promote the reaction process.

The settling zone has the function of settling the sludge, and the equipment settling zone has a unique baffle structure similar to a sludge hopper, so that the sludge can flow back to the bottom of the biological reaction zone and then is discharged, and the cost for installing a sludge reflux pump is saved.

In the mixing zone, PAC (polyaluminium chloride) is used as a flocculating agent, and the agent mixed liquid is injected by a metering dosing pump and is fully mixed with the sewage.

The flocculation reaction is carried out in the flocculation area, and the flocculation sedimentation of the total phosphorus is realized.

Finally, the treated sewage flows to the end of the integrated equipment, namely a dephosphorization zone. Further removing SS to ensure that the effluent quality is clear.

The invention is about the innovation point of protection:

1. a highly integrated sewage treatment integrated structure;

2. a flow guide slit of the flow guide area;

3. a sludge return structure in the settling zone;

4. the jet device has the functions of aeration and stirring;

5. combination of activated sludge and biofilm processes. Biological rope stuffing.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a tubular JBR biomembrane sewage treatment plant which characterized in that includes: the system comprises a grid well (T1), a regulating pool (T2), JBR equipment (T4) and a mud storage pool (T3) which are connected in sequence;

the JBR device (T4) comprising: a shell and an ejector (I); a biological reaction zone (I), a diversion zone (II) and a sedimentation zone (III) are sequentially arranged in the shell;

the flow guide area (II) is adjacent to the biological reaction area (I) and is positioned in the first side of the precipitation area (III), a water inlet at the top of the flow guide area (II) is lower than the preset liquid level of the biological reaction area (I), and a water outlet at the bottom of the flow guide area (II) is communicated with the bottom of the precipitation area (III); the ejector (I) is arranged in the biological reaction zone (I).

2. The tubular JBR biofilm sewage treatment plant of claim 1, wherein said diversion zone (II) comprises: a first partition plate (10) and a second partition plate (11) which are respectively arranged in the shell along the vertical direction; the first partition plate (10) and the second partition plate (11) are distributed in parallel;

the first partition plate (10) is adjacent to the biological reaction zone (I), and the top end of the first partition plate is lower than the preset liquid level of the biological reaction zone (I); the top of second baffle (11) is higher than the liquid level of predetermineeing of biological reaction district (I), and with the roof of casing is equipped with the clearance, the bottom of second baffle (11) with be equipped with the clearance between the diapire of casing.

3. The tubular JBR biofilm sewage treatment plant of claim 2, wherein a gap is provided between the bottom end of the first partition (10) and the bottom wall of the housing;

the JBR device (T4) further comprising:

an inclined plate (12) which is arranged at the bottom of the settling zone (III) and is positioned below the first partition plate (10) and the second partition plate (11); the inclined plate (12) is inclined towards the direction of the first side of the settling zone (III).

4. The tubular JBR biofilm sewage treatment plant of claim 3, wherein the inclination angle of said inclined plates (12) is 50 °.

5. The tubular JBR biofilm sewage treatment plant of claim 3, wherein said inclined plates (12) span the bottom of said settling zone (III); the top end of the inclined plate (12) is higher than the bottom end of the second partition plate (11), and the bottom end of the inclined plate is aligned with the bottom end of the first partition plate (10) up and down and is connected with the bottom wall of the shell.

6. The tubular JBR biofilm sewage treatment plant of claim 5, wherein said second partition (11) comprises:

a vertical plate portion (11.1);

the bottom end of the vertical plate part (11.1) is connected with the bottom end of the vertical plate part, and the bottom end of the vertical plate part is perpendicular to the bent plate part (11.2) of the inclined plate (12).

7. The tubular JBR biofilm sewage treatment plant of claim 5, further comprising a disinfection tank (T5); the water inlet of the disinfection tank (T5) is connected with the water outlet of the JBR device (T4);

a mixing zone (IV), a flocculation zone (V) and a phosphorus removal zone (VI) are also sequentially arranged in the shell; the mixing area (IV) is located above the second side of the settling area (III), the flocculation area (V) is located below the second side of the settling area (III), a top inlet of the mixing area (IV) is lower than a preset liquid level of the settling area (III), a bottom outlet is communicated with the top of the flocculation area (V), and the side of the flocculation area (V) is communicated with the bottom of the phosphorus removal area (VI).

8. The tubular JBR biofilm wastewater treatment plant of claim 7, wherein said mixing zone (IV) comprises: a third partition plate (13) and a fourth partition plate (14) which are respectively arranged in the shell along the vertical direction; the third partition plate (13) and the fourth partition plate (14) are distributed in parallel;

the JBR device (T4) further comprising: a fifth partition plate (15) which is arranged in the shell along the vertical direction and is positioned between the flocculation zone (V) and the phosphorus removal zone (VI);

the third partition plate (13) is adjacent to the settling zone (III), the top end of the third partition plate is lower than the preset liquid level of the settling zone (III), and the bottom end of the third partition plate is connected with the top end of the inclined plate (12); the top end of the fourth clapboard (14) is higher than the preset liquid level of the settling zone (III); the top end of the fifth partition plate (15) is adjacent to the bottom end of the fourth partition plate (14), the bottom end of the fifth partition plate is connected with the bottom wall of the shell, and through holes (15.1) are formed in the fifth partition plate (15).

9. The tubular JBR biofilm sewage treatment plant according to claim 8, wherein said fifth partition (15) is inclined towards the direction of said flocculation zone (V).

10. The tubular JBR biofilm sewage treatment plant of claim 1, further comprising:

a biological rope (c) arranged in the biological reaction zone (I); the biological rope (c) is made of polypropylene fiber.