CN211972069U - Energy-efficient sewage treatment system - Google Patents

Abstract

The utility model discloses an energy-efficient sewage treatment system of energy-efficient, include: the system comprises a grid well, an adjusting tank, an EHBR anaerobic tank, an EHBR anoxic tank, an EHBR aerobic tank, an inclined tube sedimentation tank, a cloth filter and an ultraviolet disinfection module which are sequentially communicated; the high-efficiency energy-saving sewage treatment system further comprises an air blower room, and the air blower room is communicated with the EHBR anoxic tank and the EHBR aerobic tank respectively and is used for providing air for the EHBR reinforced coupling membrane organisms. Under this application strengthened biological multiple pressure oxygen of coupled film, facultative, the good oxygen decomposition effect through EHBR, most COD, BOD, ammonia nitrogen obtain degrading and get rid of, environmental protection more, and the aeration is efficient, and power energy consumption is low, and operating cost is low.

Description

Energy-efficient sewage treatment system

Technical Field

The utility model relates to a sewage treatment field especially relates to an energy-efficient sewage treatment system.

Background

At present, sewage treatment pools in the market mainly comprise high-efficiency and energy-saving sewage treatment systems such as chemical methods, biological methods, physical and chemical methods and the like. For example, the A2O process exists, and anaerobic and aerobic environments are created in a biological reaction tank through an anaerobic tank (Ap), an anoxic tank (A) and an aerobic tank (O) process facility, so that nitrogen and phosphorus are effectively removed. The sewage of the system flows back, and the operation cost is high.

At present, no efficient and energy-saving sewage treatment system adopting EHBR reinforced coupling membrane biology exists in the market.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-efficiency energy-saving sewage treatment system, which aims at solving the problems.

According to this application embodiment provides a high-efficient energy-conserving sewage treatment system, includes: the system comprises a grid well, an adjusting tank, an EHBR anaerobic tank, an EHBR anoxic tank, an EHBR aerobic tank, an inclined tube sedimentation tank, a cloth filter and an ultraviolet disinfection module which are sequentially communicated; the EHBR anaerobic pool, the EHBR anoxic pool and the EHBR aerobic pool all comprise EHBR reinforced coupling membrane biological units, and the high-efficiency energy-saving sewage treatment system further comprises an air blower room which is respectively communicated with the EHBR anoxic pool and the EHBR aerobic pool and is used for providing air for the EHBR reinforced coupling membrane organisms.

The utility model discloses an among the energy-efficient sewage treatment system, still include: and the dosing system is communicated with the tail end of the EHBR aerobic tank.

The utility model discloses an among the energy-efficient sewage treatment system, still include sewage sedimentation tank and pressure filter, the pressure filter compression mud in the sewage sedimentation tank.

The utility model discloses an among the energy-efficient sewage treatment system, the equalizing basin is underground formula steel-concrete structure, the EHBR oxygen deficiency pond is aboveground formula steel-concrete structure the equalizing basin with be provided with the elevator pump between the EHBR oxygen deficiency pond.

The utility model discloses an among the energy-efficient sewage treatment system still be provided with submersible mixer in the EHBR oxygen deficiency pond, be used for making liquid in the EHBR oxygen deficiency pond is the suspended state.

The utility model discloses an among the energy-efficient sewage treatment system, be provided with the cat ladder in the equalizing basin, the cat ladder is connected equalizing basin bottom with EHBR oxygen deficiency pond.

The technical scheme provided by the embodiment of the application can have the following beneficial effects: the application designs an energy-efficient sewage treatment system, sets up EHBR anaerobism pond, EHBR oxygen deficiency pond, the good oxygen pond of EHBR, strengthens under the biological multiple pressure oxygen of coupled film, facultative, good oxygen decomposition effect through EHBR, most COD, BOD, ammonia nitrogen obtain the degradation get rid of, environmental protection more, and aeration efficiency is high, and power energy consumption is low, and operating cost is low.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic view of a viewing angle according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another view angle according to an embodiment of the present invention.

Description of reference numerals:

10. a grid well; 20. a regulating tank; 30. an EHBR anaerobic tank; 40. an EHBR anoxic tank; 50. an EHBR aerobic tank; 60. an inclined tube sedimentation tank; 70. a cloth filter; 80. an ultraviolet disinfection module; 90. a blower room; 91. a sewage sedimentation tank; 92. a filter press; 93. a submersible mixer; 94. climbing a ladder; 95. a dosing system.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1 and 2, the utility model discloses a high-efficient energy-saving sewage treatment system, this system is used to handle town sewage, it includes grid well 10, equalizing basin 20, EHBR anaerobism pond 30, EHBR oxygen deficiency pond 40, EHBR aerobic tank 50, pipe chute sedimentation tank 60, cloth filter 70, ultraviolet disinfection module 80 that communicate in proper order, in this embodiment, sewage enters into grid well 10 in order to get rid of great suspended solid, floater, fibrous matter and solid particle matter in the sewage to guarantee that follow-up technology operation is stable. Then the sewage enters an adjusting tank 20, the adjusting tank 20 adjusts the water quantity and the water quality uniformly, the COD and BOD concentration fluctuation of the wastewater is controlled within an allowable range, and the subsequent treatment process works under a relatively stable condition. After being treated by the regulating tank 20, the sewage enters an EHBR system, and the sewage enters an EHBR anaerobic tank 30 so as to decompose macromolecular substances which are difficult to degrade in the domestic sewage into micromolecules; then the sewage enters an EHBR anoxic tank 40, and the EHBR anoxic tank 40 plays a role of facultative anaerobic and mainly performs nitrification and denitrification reactions; then the sewage enters an EHBR aerobic tank 50 to remove the residual organic matters, and the removal rate is up to 95 percent as a whole. The sewage treated by the EHBR system enters an inclined tube sedimentation tank 60 for sedimentation of activated sludge in the EHBR aerobic tank 50, and sludge backflow is carried out. The liquid treated by the sedimentation tank is subjected to concentration treatment on suspended matters through the cloth filter 70 and then is subjected to disinfection treatment through the ultraviolet disinfection module 80, so that external water can be discharged and is discharged into a ditch. The EHBR anaerobic tank 30, the EHBR anoxic tank 40 and the EHBR aerobic tank 50 respectively comprise EHBR reinforced coupling membrane biological units, and most of COD, BOD and ammonia nitrogen are degraded and removed under the multi-pressure oxygen, facultative oxygen and aerobic decomposition action of the EHBR reinforced coupling membrane biological units. The system further comprises a blower room 90, wherein the blower room 90 is respectively communicated with the EHBR anoxic tank 40 and the EHBR aerobic tank 50 and is used for providing air for EHBR reinforced coupling membrane organisms.

The intensified coupling membrane biological technology is a novel sewage treatment technology organically integrating a gas separation membrane technology and a biological membrane water treatment technology. The microbial film is attached to the surface of the oxygen-permeable hollow fiber film, when sewage flows around the oxygen-permeable film, pollutants in the water body enter the biological film under the action of concentration driving, microbial adsorption and the like, and are utilized by microbes through biological metabolism and proliferation, so that the pollutants in the water body are assimilated into microbial thalli which are fixed on the biological film or decomposed into inorganic metabolites, thereby realizing the purification of the water body. The flow channel type purification process is particularly suitable for treating river channels, lakes and other drainage basins, and has the technical advantages, engineering advantages, cost advantages and operation management advantages which cannot be achieved by the conventional water treatment technology. The main functional layer in the EHBR technology is a biological membrane attached to and growing on the surface of an aeration membrane, mainly composed of microorganisms and extracellular polymers, including bacteria, fungi, algae, protozoa, metazoans and the like. As an attachment growth type sewage treatment technology, the biofilm has a special biological layer structure, a complex biological community and a long food chain, which brings special advantages to EHBR.

Because the specific surface area of the aeration membrane is large, particularly the specific surface area of the hollow fiber membrane can be as high as 5108m2/m3, the membrane is taken as a carrier, so that a sufficient attachment area can be provided for the growth of microorganisms in a smaller space, the concentration of the microorganisms in a unit space is greatly improved, the unit volume processing capacity is improved, and the impact load resistance is enhanced.

Because microorganisms are attached to grow, the hydraulic retention time and the biological retention time can be independently controlled, the microorganisms on the biomembrane cannot run off along with water flow, and the Sludge Retention Time (SRT) can be considered to be infinitely long in theory, so that the growth and enrichment possibilities are provided for the microorganisms with longer growth generation time and slower proliferation speed, such as nitrobacteria, denitrifying bacteria, phosphorus accumulating bacteria, anaerobic ammonium oxidation bacteria and the like, and conditions are created for the EHBR technology to realize dephosphorization and denitrification. Meanwhile, the layered structure of the biological membrane can create the simultaneous occurrence of an aerobic process and an anaerobic process, and the possibility is provided for realizing the simultaneous nitrification and denitrification process in a single reactor.

When the EHBR is aerated and supplied with oxygen, oxygen permeates the membrane filaments and is directly utilized by the biomembrane, and does not need to pass through a liquid phase boundary layer, thereby greatly reducing the mass transfer resistance of the oxygen and being beneficial to improving the oxygen supply speed and the oxygen utilization rate. Oxygen and a substrate are transmitted in opposite directions, and the biological membrane can be obviously layered by controlling oxygen supply, so that the effects of simultaneous nitrification and denitrification and organic matter removal are achieved. According to the requirement of wastewater treatment, the oxygen supply amount can be controlled by adjusting the aeration pressure, so that the oxygen demand of the reactor is met, and meanwhile, the volatilization and waste of gas are avoided. The reverse transfer of oxygen and substrate in EHBR causes the biofilm to form a different oxygen and organic concentration profile than traditional bioreactors (aerated biofilters, rotating biological disks, biological contact oxidation, etc.). Due to the special bidirectional transfer mechanism of oxygen and a substrate and a biological layered structure of the EHBR, a plurality of microorganisms with different habits and great differences in living environment can coexist in the EHBR, and simultaneously play roles in removing organic matters and removing phosphorus and nitrogen. In summary, these microorganisms include common heterotrophic aerobic bacteria, nitrifying bacteria, nitrosobacteria, denitrifying bacteria, and phosphorus accumulating bacteria.

Therefore, the EHBR reinforced coupling membrane biotechnology has the following specific effects:

1) can be flexibly adjusted according to the water quality condition;

2) the aeration efficiency is high, the area of the aeration membrane per unit volume is large, and the energy consumption is low;

3) the microorganisms are highly enriched on the surface of the membrane, and the active microorganisms are not easy to lose;

4) the membrane has long service life, no pollution problem and no need of operations such as back flushing;

5) the removal efficiency is high, and the system has strong water impact load resistance;

6) the investment of comprehensive engineering is less, the power energy consumption is low, and the operation cost is low;

7) the operation is simple, and the process is automatically controlled; the equipment is compact, occupies small space and is easy to maintain.

In an alternative embodiment, the energy-efficient sewage treatment system further comprises a sewage sedimentation tank 91 and a filter press 92, wherein the sewage sedimentation tank 91 is connected between the inclined tube sedimentation tank 60 and the filter press 92, and the sewage sedimentation tank 91 is used for concentrating excess sludge and storing excess sludge. In some embodiments, a water collecting well is further disposed between the sewage settling tank 91 and the adjusting tank 20, and some sewage still exists in the sewage settling tank 91 and is transmitted to the water collecting inlet in the adjusting tank 20 through a pipeline, and is treated for the second time in the adjusting tank 20.

In an alternative embodiment, a submersible agitator 93 is also provided in the EHBR anoxic tank 40 for suspending liquid in the EHBR anoxic tank 40. Thereby make the macromolecule of difficult degradation in the domestic sewage be decomposed into the micromolecule material by the centimeter, avoid the macromolecule to deposit the bottom of EHBR oxygen deficiency pond 40. In this embodiment, the equalizing basin 20 is an underground steel concrete structure, the EHBR anoxic basin 40 is an above-ground steel concrete structure, a lift pump is arranged between the equalizing basin 20 and the EHBR anoxic basin 40, and sewage in the equalizing basin 20 is conveyed into the EHBR anoxic basin 40 through the lift pump. A ladder stand 94 is arranged in the adjusting tank 20, and the ladder stand 94 is connected with the bottom of the adjusting tank 20 and the EHBR anoxic tank 40, so that the maintenance is convenient. In some embodiments, the number of the conditioning tanks 20 may be two, and the bottom of the outer side wall of each of the two conditioning tanks 20 is provided with a knife gate valve and is communicated through a pipeline.

In an alternative embodiment, the system further comprises a dosing system 95, wherein the dosing system 95 is connected with the EHBR aerobic tank 50. The dosing system feeds a polyaluminium chloride (PAC) flocculating agent into the EHBR aerobic tank 50 to accelerate the separation of mud and water in the sedimentation tank.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. An energy-efficient sewage treatment system, characterized by, includes: the system comprises a grid well, an adjusting tank, an EHBR anaerobic tank, an EHBR anoxic tank, an EHBR aerobic tank, an inclined tube sedimentation tank, a cloth filter and an ultraviolet disinfection module which are sequentially communicated; the high-efficiency energy-saving sewage treatment system further comprises an air blower room, and the air blower room is communicated with the EHBR anoxic tank and the EHBR aerobic tank respectively and is used for providing air for the EHBR reinforced coupling membrane organisms.

2. The energy efficient wastewater treatment system according to claim 1, further comprising: and the dosing system is communicated with the tail end of the EHBR aerobic tank.

3. The energy efficient wastewater treatment system according to claim 2, further comprising a wastewater settling tank and a filter press, wherein the filter press compresses sludge in the wastewater settling tank.

4. The efficient and energy-saving sewage treatment system according to claim 3, wherein the adjusting tank is of an underground steel-concrete structure, the EHBR anoxic tank is of an above-ground steel-concrete structure, and a lift pump is arranged between the adjusting tank and the EHBR anoxic tank.

5. The energy efficient wastewater treatment system of claim 1, wherein a submersible mixer is further disposed in the EHBR anoxic tank for suspending the liquid in the EHBR anoxic tank.

6. The energy-efficient sewage treatment system of claim 4 wherein a ladder is disposed within the conditioning tank, the ladder connecting the bottom of the conditioning tank with the EHBR anoxic tank.

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