CN110921976B - Take micro-nano bubble generator's integration sewage purification device - Google Patents
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- CN110921976B CN110921976B CN201911067253.XA CN201911067253A CN110921976B CN 110921976 B CN110921976 B CN 110921976B CN 201911067253 A CN201911067253 A CN 201911067253A CN 110921976 B CN110921976 B CN 110921976B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
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Abstract
The invention discloses integrated sewage purification equipment with a micro-nano bubble generator, and belongs to the technical field of sewage treatment. The sewage treatment device comprises a sewage regulating tank, an anoxic tank, a first aerobic tank, a second aerobic tank, a sedimentation tank, an aeration pipe, a micro-nano bubble generator and an adsorption fixed bed, wherein the aeration pipe is arranged at the bottoms of the first aerobic tank and the second aerobic tank, the micro-nano bubble generator is arranged at the bottom of the sedimentation tank, and the adsorption fixed bed is arranged in the middle of the sedimentation tank. The electric double layer is formed around the interface of the micro-nano bubbles generated by the micro-nano bubble generator, so that the suspended matters have strong adsorption effect, the suspended matters adsorbed by the micro-nano bubbles are more easily attached to the adsorption fixed bed, and the separation effect of suspended sludge, SS and the like in the water body is enhanced; the addition of micro-nano bubbles solves the problems of uneven sludge discharge and sludge accumulation.
Description
Technical Field
The invention relates to integrated sewage purification equipment with a micro-nano bubble generator, and belongs to the technical field of sewage treatment.
Background
In the sewage treatment process, the composition and the structure of the sewage to be treated are complex, a large amount of granular water-insoluble colloidal substances exist in the polluted water body, and the density of the granular water-insoluble colloidal substances is close to that of water, so that the pollutants are suspended in the water body, and the pollutants are not floated to form scum, are difficult to settle to form precipitate and cannot be effectively removed, and the sewage treatment difficulty is increased.
The dispersed sewage treatment equipment generally adopts an AO+ contact oxidation biochemical treatment process, and the equipment is divided into three functional sections of anoxic, aerobic and precipitation. Wherein, the sedimentation part adopts a natural sedimentation mode, and the sludge discharge adopts a gas stripping sludge discharge method. At present, the domestic transportation and lifting of sewage, sludge and the like are mostly solved by means of various pumps, but not all sewage and the like are suitable for adopting the mode, such as corrosive industrial wastewater and the like. On the other hand, various submersible pumps, submersible pumps and the like are required to be submerged in water, and installation, maintenance, overhaul and the like are not very easy. The air stripping technology has simple device, convenient installation and maintenance, and wide application. Some small sewage treatment plants in China also adopt a gas stripping technology in the aspects of sewage, sludge and the like. The gas stripping sludge discharge can be used for sludge discharge of a clarification tank, a biochemical tank and a sludge tank, and the purpose of controlling the sludge discharge flow and time can be achieved by controlling the air inlet time and the intensity. The device has the advantages of simple structure, energy consumption saving, low investment cost, easy maintenance and the like, and is stable in operation and difficult to break down.
However, the stripping sludge also has the disadvantages of not neglecting, such as lifting efficiency, lift, lifting range and the like. In addition, the problem of uneven sludge discharge of the stripping equipment can occur in long-term operation, the sludge discharge effect is obvious only in the area close to the accessories of the stripping device, the sludge in the area with a small distance is difficult to remove, the phenomena of sludge accumulation, floating and the like occur, and finally the water quality of the effluent is influenced. Through carrying out long-term tracking to existing integration life treatment facility, find that the gas stripping device of installation at the sediment compartment is difficult to realize better mud effect, and the mud is uneven, can appear mud floating phenomenon often.
Therefore, an integrated sewage purification device with a micro-nano bubble generator is developed, and micro-nano bubbles generally refer to mixed bubbles of micro bubbles with a size of ten to tens of micrometers and nano bubbles with a size of hundreds of nanometers or less in a water body. These bubble groups can cause suspended substances to continuously rise to the liquid surface due to buoyancy to form scum. Micro-nano bubbles are widely developed and applied due to the advantages of small size, large specific surface area, small rising rate, high adsorption efficiency and the like. The oxygen-enriched water-based organic material has the characteristics of self oxygenation, negative charge, extremely strong oxidizing property and the like, and has potential application prospect in the aspect of treating refractory organic materials. And the micro-nano bubbles have the electric double layer formed around, so that the micro-nano bubbles have strong adsorption effect on suspended substances in the water body, and the micro-nano bubbles are practically feasible to be applied to mud-water separation in the water body. By combining the characteristics of micro-nano bubbles, a fixed bed technology is introduced, and sludge is adsorbed on a fixed bed, so that the problem of sludge discharge in a precipitation area is solved.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the utility model provides an integrated sewage purification device with a micro-nano bubble generator, which solves the problems of uneven sludge discharge and floating of sludge in a sedimentation tank of the existing integrated sewage purification device.
The technical problems to be solved by the invention are realized by adopting the following technical scheme:
the utility model provides an integrated sewage purification equipment of little nanometer bubble generator in area, it includes sewage equalizing basin, anoxic tank, first good oxygen pond, second good oxygen pond, sedimentation tank, sewage equalizing basin is connected with anoxic tank water inlet, and the overflow mouth and the first good oxygen pond intercommunication of anoxic tank, the overflow mouth and the second good oxygen pond intercommunication of first good oxygen pond, the overflow mouth and the sedimentation tank intercommunication of the good oxygen pond of second, be equipped with biological filler in anoxic tank, the good oxygen pond of first good oxygen pond, the good oxygen pond of second, still include aeration pipe, little nanometer bubble generator, adsorb the fixed bed, first good oxygen pond, the good oxygen pond bottom of second are equipped with the aeration pipe, the sedimentation tank bottom is equipped with little nanometer bubble generator, and the sedimentation tank middle part is equipped with the adsorption fixed bed.
As a preferable example, the second aerobic tank returns the mixed liquor to the anoxic tank by providing a return pump.
As a preferred example, the overflow port of the supernatant fluid of the sedimentation tank is connected with a disinfection unit.
As a preferred example, the sterilizing unit is a sterilizing water tank to which any one of hydrochloric acid, sodium chlorate, chlorine dioxide, sodium hypochlorite, chlorine and ozone is administered.
As a preferable example, the upper part of the sedimentation tank is provided with a medicine storage tank. Can store the dephosphorizing agent and is convenient to put in.
The beneficial effects of the invention are as follows:
(1) The electric double layer is formed around the interface of the micro-nano bubbles generated by the micro-nano bubble generator, so that the suspended matters have strong adsorption effect, the suspended matters adsorbed by the micro-nano bubbles are more easily attached to the adsorption fixed bed, and the separation effect of suspended sludge, SS and the like in the water body is enhanced;
(2) The addition of micro-nano bubbles solves the problems of uneven sludge discharge and sludge accumulation;
(3) The adsorption fixed bed is added to provide an attachment point for substances adsorbed by micro-nano bubbles, so that the adsorption fixed bed is the last step of mud-water separation, and the mud-discharging efficiency is improved by regular salvaging;
(4) The sludge-water separation effect of the sedimentation tank of the integrated equipment is optimized, and the method is a low-energy-consumption and high-efficiency village and town domestic sewage treatment process;
(5) The bottoms of the first aerobic tank and the second aerobic tank are provided with aeration pipes, so that the dissolved oxygen is increased, and the purification efficiency is improved;
(6) The disinfection unit can further disinfect the water outlet, so that the water outlet is cleaner.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
In the figure: the sewage treatment device comprises a sewage regulating tank 1, an anoxic tank 2, a first aerobic tank 3, a second aerobic tank 4, a sedimentation tank 5, biological filler 6, an aeration pipe 7, a micro-nano bubble generator 8, an adsorption fixed bed 9, a reflux pump 10, a disinfection unit 11 and a medicine storage tank 12.
Detailed Description
The invention will be further described with reference to the following detailed drawings, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in figure 1, the integrated sewage purification equipment with the micro-nano bubble generator comprises a sewage regulating tank 1, an anoxic tank 2, a first aerobic tank 3, a second aerobic tank 4 and a sedimentation tank 5, wherein the sewage regulating tank 1 is connected with the water inlet end of the anoxic tank 2, the overflow port of the anoxic tank 2 is communicated with the first aerobic tank 3, the overflow port of the first aerobic tank 3 is communicated with the second aerobic tank 4, the overflow port of the second aerobic tank 4 is communicated with the sedimentation tank 5, biological fillers 6 are arranged in the anoxic tank 2, the first aerobic tank 3 and the second aerobic tank 4 to avoid the mud leakage phenomenon, the integrated sewage purification equipment further comprises an aeration pipe 7, a micro-nano bubble generator 8 and an adsorption fixed bed 9, the aeration pipe 7 is arranged at the bottom of the first aerobic tank 3 and the bottom of the second aerobic tank 4, the micro-nano bubble generator 8 is arranged at the bottom of the sedimentation tank 5, and the adsorption fixed bed 9 is arranged at the middle part of the sedimentation tank 5.
The second aerobic tank 4 is provided with a reflux pump 10 to reflux the mixed solution to the anoxic tank 2. And (5) refluxing the nitrified liquid to the anoxic tank 2 to complete denitrification treatment.
The overflow port of the supernatant fluid in the sedimentation tank 5 is connected with a disinfection unit 11.
The sterilizing unit 11 is a sterilizing water tank into which any one of hydrochloric acid, sodium chlorate, chlorine dioxide, sodium hypochlorite, chlorine and ozone is put.
The upper part of the sedimentation tank 5 is provided with a medicine storage tank 12. Can store the dephosphorizing agent and is convenient to put in.
The micro-nano bubble generator 8 adopts a commercial model of ultra-micro nano bubble generator UFB130B3, and can generate colorless and clear bubbles (100-200 nm) with smaller wavelength than visible light, so that the bubbles cannot be observed by naked eyes. These bubble groups can cause suspended substances to continuously rise to the liquid surface due to buoyancy to form scum. The micro-nano bubble has the characteristics of self oxygenation, negative charge, extremely strong oxidizing property, free radical generation and the like, has an electric double layer formed around the micro-nano bubble, and has a very strong adsorption effect on suspended substances in a water body.
The adsorption fixed bed 9 adopts commercial multilayer latticed fixed bed products, sludge adsorbed by bubbles forms scum, the adsorption fixed bed 9 adsorbs the scum, the bed layer is replaced after adsorption saturation, the sludge can be periodically discharged, and the sludge discharge efficiency is improved.
Working principle:
the micro-nano bubbles generated by the micro-nano bubble generator 8 form an electric double layer around the interface, so that the micro-nano bubble generator has a strong adsorption effect on suspended matters, the suspended matters adsorbed by the micro-nano bubbles are more easily attached to the adsorption fixed bed 9, and the separation effect of suspended sludge, SS and the like in the water body is enhanced;
the addition of micro-nano bubbles solves the problems of uneven sludge discharge and sludge accumulation;
the adsorption fixed bed 9 is added to provide an attachment point for substances adsorbed by micro-nano bubbles, so that the adsorption fixed bed is the final step of mud-water separation, and the mud-discharging efficiency is improved by periodically salvaging;
the sludge-water separation effect of the sedimentation tank 5 of the integrated equipment is optimized, and the method is a low-energy-consumption and high-efficiency village and town domestic sewage treatment process;
the bottoms of the first aerobic tank 3 and the second aerobic tank 4 are provided with aeration pipes 7, so that the dissolved oxygen is increased, and the purification efficiency is improved.
The sterilizing unit 11 can further sterilize the discharged water so that the discharged water is cleaner.
The equipment mainly comprises two parts of anaerobic treatment and aerobic treatment. The anaerobic treatment section is the hydrolysis and denitrification process, etc. In order to avoid the occurrence of sludge run-out in the apparatus, it is conceivable to add a biological filler 6 to each compartment to ensure a sufficient amount of microorganisms in the reactor. And (5) refluxing the nitrified liquid to the anoxic tank 2 to complete denitrification treatment. And the reflux position and the reflux ratio can be controlled, so that the denitrification performance of the system is enhanced. And a micro-nano bubble generator 8 and an adsorption fixed bed 9 are added in the sedimentation tank 5, the micro-nano bubble generator 8 blows up sludge and SS at the bottom of the sedimentation tank 5, the SS and the sludge are adsorbed through the adsorption fixed bed 9 layer, and the bed layer is replaced after adsorption saturation.
Examples
(1) Starting the domestic sewage integrated device, wherein the domestic sewage integrated device comprises domestication of anaerobic sludge and domestication of an aeration biological membrane; the domestication of anaerobic sludge adopts a mode of gradually shortening hydraulic retention time, and the domestication of an aeration biological film adopts a stuffy aeration mode;
(2) After the system is started, controlling the Hydraulic Retention Time (HRT) to be 3-4 hours, adopting domestic sewage for water inflow, regulating the frequency of a micro-nano bubble generator after stable operation, and examining the adsorption condition of an adsorption fixed bed on sludge and SS and the replacement period of the adsorption fixed bed;
(3) Controlling the HRT to be 3-4 hours, adopting domestic sewage for water inflow, firstly changing the impact load resistance of a water inflow research system, and secondly changing the impact load resistance of an organic matter of the water inflow concentration research system;
(4) And controlling the HRT to be 3-4 hours, adopting domestic sewage for water inflow, and researching the influence of low temperature on the system operation efficiency in winter.
The foregoing has shown and described the basic principles, principal features and principal advantages of the invention. It will be appreciated by persons skilled in the art that the present invention is not limited to the embodiments described above, but is capable of numerous variations and modifications without departing from the spirit and scope of the invention, which is defined in the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The integrated sewage purification equipment with the micro-nano bubble generator comprises a sewage regulating tank, an anoxic tank, a first aerobic tank, a second aerobic tank and a sedimentation tank, wherein the sewage regulating tank is connected with the water inlet end of the anoxic tank, an overflow port of the anoxic tank is communicated with the first aerobic tank, an overflow port of the first aerobic tank is communicated with the second aerobic tank, an overflow port of the second aerobic tank is communicated with the sedimentation tank, biological fillers are arranged in the anoxic tank, the first aerobic tank and the second aerobic tank, and the integrated sewage purification equipment is characterized by further comprising an aerator pipe, the micro-nano bubble generator and an adsorption fixed bed;
the second aerobic tank is provided with a reflux pump to reflux the mixed liquid to the anoxic tank;
the supernatant overflow port of the sedimentation tank is connected with a disinfection unit, and is arranged above the adsorption fixed bed;
the disinfection unit is a disinfection water tank for adding any one of hydrochloric acid, sodium chlorate, chlorine dioxide, sodium hypochlorite, chlorine and ozone;
the upper part of the sedimentation tank is provided with a medicine storage tank.
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| CN201911067253.XA CN110921976B (en) | 2019-11-04 | 2019-11-04 | Take micro-nano bubble generator's integration sewage purification device |
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| CN201911067253.XA CN110921976B (en) | 2019-11-04 | 2019-11-04 | Take micro-nano bubble generator's integration sewage purification device |
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| CN110921976B true CN110921976B (en) | 2023-06-06 |
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| CN111606508A (en) * | 2020-05-20 | 2020-09-01 | 苏州首创嘉净环保科技股份有限公司 | Domestic sewage treatment equipment for strengthening total nitrogen removal through ozone |
| CN113321560B (en) * | 2021-06-01 | 2022-11-08 | 仲恺农业工程学院 | Method and device for producing efficient organic liquid fertilizer by utilizing biogas slurry |
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| CN209507656U (en) * | 2018-11-22 | 2019-10-18 | 南京浠澄环保科技有限公司 | A kind of filling adsorption formula flotation tank |
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