CN110550822A - oily sewage treatment system based on ceramic membrane biological reaction - Google Patents
oily sewage treatment system based on ceramic membrane biological reaction Download PDFInfo
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- CN110550822A CN110550822A CN201910846769.8A CN201910846769A CN110550822A CN 110550822 A CN110550822 A CN 110550822A CN 201910846769 A CN201910846769 A CN 201910846769A CN 110550822 A CN110550822 A CN 110550822A
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic 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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
Abstract
The invention discloses an oily sewage treatment system based on ceramic membrane biological reaction, which comprises a hydrolysis acidification mechanism, an anaerobic treatment mechanism, a sludge precipitation mechanism, an aerobic aeration mechanism, a ceramic membrane treatment mechanism and a sludge circulation mechanism, wherein the hydrolysis acidification mechanism is used for treating oily sewage; the hydrolysis acidification mechanism, the anaerobic treatment mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism are communicated in sequence and treat the oily sewage; the sludge circulating mechanism is used for conveying the sludge in the sludge settling mechanism to the hydrolysis acidification mechanism in a backflow mode, and conveying the sludge in the ceramic membrane treatment mechanism to the hydrolysis acidification mechanism and the aerobic aeration mechanism in a backflow mode. According to the invention, organic matters which are difficult to degrade are oxidized into easily degradable microorganisms through hydrolytic acidification and anaerobic reaction, so that the biodegradability of sewage is improved, and after the hydrolytic acidification and the anaerobic reaction, the anaerobic sludge is independently precipitated by stopping a sludge precipitation mechanism, so that the stability and the high-efficiency specificity of the sludge are ensured; the ceramic membrane treatment mechanism improves the concentration enrichment of the sludge and further improves the sewage treatment effect.
Description
Technical Field
The invention relates to the technical field of oily sewage treatment, in particular to an oily sewage treatment system based on ceramic membrane biological reaction.
Background
The ship oily water refers to the oily water and the wastewater which are inevitably generated in the processes of starting and sailing of a ship, and comprises oily tank washing water, cabin water, oily ballast water and the like; the ship oil wastewater contains a large amount of crude oil, gasoline, propylene, complex compounds which are difficult to be bio-degraded or not degraded and the like, and needs to be recycled.
Present boats and ships oily sewage treatment is mainly handled and retrieves fluid to sewage, and current treatment facility generally includes oil removal equipment, air supporting equipment or oil water separator etc. but current equipment treatment effeciency is low and the treatment effect is not good, still has the greasy dirt in the sewage after the processing, and these sewage that contain the greasy dirt if directly discharge the environment, seriously influence the environment, consequently need carry out the deepening processing once more, this undoubtedly greatly increased treatment cost.
Disclosure of Invention
The invention aims to provide an oily sewage treatment system based on ceramic membrane bioreaction, which aims to solve the problems that the existing treatment equipment is poor in treatment effect, easy to pollute the environment, and high in cost due to the need of advanced treatment.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
an oily sewage treatment system based on ceramic membrane biological reaction comprises a hydrolysis acidification mechanism, an anaerobic treatment mechanism, a sludge precipitation mechanism, an aerobic aeration mechanism, a ceramic membrane treatment mechanism and a sludge circulation mechanism;
the hydrolysis acidification mechanism, the anaerobic treatment mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism are communicated in sequence and are used for treating the oily sewage;
the sludge circulating mechanism is communicated with the hydrolysis acidification mechanism, the sludge precipitation mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism, and is used for conveying sludge in the sludge precipitation mechanism to the hydrolysis acidification mechanism in a backflow mode and conveying sludge in the ceramic membrane treatment mechanism to the hydrolysis acidification mechanism and the aerobic aeration mechanism in a backflow mode.
According to the oily sewage treatment system based on the ceramic membrane biological reaction, organic matters which are difficult to biodegrade in sewage are oxidized into microorganisms which are easy to degrade through microorganisms through hydrolytic acidification and anaerobic reaction, the biodegradability of the sewage is improved, after the hydrolytic acidification and the anaerobic reaction, the anaerobic sludge is independently precipitated through the sludge precipitation mechanism, the sludge does not enter an aerobic system, the stability and the efficient specificity of the sludge are ensured, and the sludge is refluxed to the hydrolytic acidification mechanism and the aerobic aeration mechanism through the sludge circulation mechanism, so that the sludge concentration is ensured; and finally, the concentration enrichment of the sludge is improved through a ceramic membrane treatment mechanism, and the treatment effect of the oily sewage is further improved.
In addition, the oily wastewater treatment system based on ceramic membrane bioreaction according to the above embodiment of the present invention may further have the following additional technical features:
According to one example of the invention, the hydrolysis acidification mechanism comprises a hydrolysis acidification tank, a first stirring device and a first suspended filler; the first stirring device is installed at the bottom of the hydrolysis acidification tank, and the first suspension fillers are located in the hydrolysis acidification tank.
According to one example of the invention, the anaerobic treatment mechanism comprises an anaerobic tank, a second stirring device and a second suspended filler; the second stirring device is arranged at the bottom of the anaerobic tank, and the second suspended fillers are located in the anaerobic tank.
According to an example of the invention, the aerobic aeration mechanism comprises a primary aerobic aeration part and a secondary aerobic aeration part which are communicated, and the primary aerobic aeration part is communicated with the sludge sedimentation mechanism; the secondary aerobic aeration part is communicated with the ceramic membrane treatment mechanism.
according to one example of the invention, the primary aerobic aeration part comprises a first aerobic tank, a first aeration device and a first suspension filler; the first aeration device is arranged at the bottom of the first aerobic tank; a plurality of first suspended fillers are fixedly arranged in the first aerobic pool at intervals;
and/or the secondary aerobic aeration part comprises a second aerobic tank, a second aeration device and a second suspension filler; the second aeration device is arranged at the bottom of the second aerobic tank; and a plurality of second suspended fillers are fixedly arranged in the second aerobic pool at intervals.
According to one example of the present invention, the ceramic membrane treatment mechanism includes a ceramic membrane tank and a ceramic membrane module installed at the bottom of the ceramic membrane tank.
according to one example of the invention, the ceramic membrane module is externally coated with a nanocoating.
According to an example of the invention, the ceramic membrane treatment mechanism further comprises a water tank, a backwashing pump and a self-priming pump; the backwashing pump is respectively communicated with the water tank and the ceramic membrane tank so as to guide the water body of the water tank into the ceramic membrane tank; the self priming pump respectively with the pond with ceramic membrane pond intercommunication, with the water in ceramic membrane pond is leading-in the pond.
According to an example of the present invention, the sludge circulation mechanism includes a first sludge circulation portion and a second sludge circulation portion; the first sludge circulating part is communicated with the hydrolysis acidification mechanism and the sludge precipitation mechanism; the second sludge circulating part is communicated with the hydrolysis acidification mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism.
According to an example of the invention, the aerobic aeration mechanism further comprises a fresh air introducing device communicated with the aerobic aeration mechanism.
Advantages of the above additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a view showing an oily sewage treatment system based on ceramic membrane bioreaction according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. A hydrolysis acidification pool; 2. a first stirring device; 3. a first suspended filler; 4. an anaerobic tank; 5. a second stirring device; 6. a second suspended filler; 7. a sedimentation tank; 8. a first aerobic tank; 9. a first aeration device; 10. a first suspension packing; 11. a second aerobic tank; 12. a second aeration device; 13. a second suspension packing; 14. a fresh air introducing device; 15. a ceramic membrane tank; 16. a ceramic membrane module; 17. a pool; 18. a backwash pump; 19. a self-priming pump; 20. a first sludge reflux pump; 21. a first return line; 22. a second sludge reflux pump; 23. a second return line.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, the present embodiment provides an oily sewage treatment system based on ceramic membrane bioreaction, which includes a hydrolysis acidification mechanism, an anaerobic treatment mechanism, a sludge precipitation mechanism, an aerobic aeration mechanism, a ceramic membrane treatment mechanism, and a sludge circulation mechanism.
The hydrolysis acidification mechanism, the anaerobic treatment mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism of the embodiment are communicated from left to right in sequence, and oily sewage sequentially passes through hydrolysis acidification treatment, anaerobic treatment, sludge precipitation treatment, aerobic aeration treatment and ceramic membrane treatment to finally reach the discharge standard.
The sludge circulation mechanism of the embodiment is communicated with the hydrolysis acidification mechanism, the sludge precipitation mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism, the sludge circulation mechanism is used for conveying sludge in the sludge precipitation mechanism to the hydrolysis acidification mechanism in a backflow mode, and conveying the sludge in the ceramic membrane treatment mechanism to the hydrolysis acidification mechanism and the aerobic aeration mechanism in a backflow mode so as to guarantee the sludge concentration in the hydrolysis acidification mechanism and the aerobic aeration mechanism, nitrate nitrogen is contained in the sludge, dissolved oxygen in the hydrolysis acidification tank 1 is kept at 0.5mg/L, and total nitrogen in sewage in the hydrolysis acidification mechanism can be removed.
The oily sewage treatment system based on ceramic membrane biological reaction oxidizes organic matters which are difficult to biodegrade in sewage into easily degradable microorganisms through hydrolytic acidification and anaerobic reaction, so that the biodegradability of the sewage is improved, anaerobic sludge is independently precipitated through a sludge precipitation mechanism after the hydrolytic acidification and the anaerobic reaction, the sludge is not enabled to enter an aerobic system, the stability and the high-efficiency specificity of the sludge are ensured, and the sludge is returned to a hydrolytic acidification mechanism and an aerobic aeration mechanism through a sludge circulation mechanism, so that the sludge concentration is ensured; and finally, the concentration enrichment of the sludge is improved through a ceramic membrane treatment mechanism, and the treatment effect of the oily sewage is further improved.
The following describes specific structural forms of the hydrolysis acidification means, anaerobic treatment means, sludge precipitation means, aerobic aeration means, ceramic membrane treatment means and sludge circulation means in this embodiment.
Referring to fig. 1 (the arrow direction in the figure is the sewage flow direction or the sludge flow direction), the hydrolysis acidification mechanism of the embodiment includes a hydrolysis acidification tank 1, a first stirring device 2 and a first suspension filler 3; the first stirring device 2 of the present embodiment is installed at the bottom of the hydrolysis acidification tank 1, the plurality of first suspended fillers 3 are located in the hydrolysis acidification tank 1, and the first stirring device 2 may be a stirrer with stirring blades, and a large number of experiments by the inventors have found that when the adding proportion of the first suspended fillers 3 of the present embodiment is preferably 15-20%, the hydrolysis acidification effect is optimal.
The anaerobic treatment mechanism of the embodiment comprises an anaerobic tank 4, a second stirring device 5 and a second suspended filler 6; the second stirring device 5 of the present embodiment is installed at the bottom of the anaerobic tank 4, the second stirring device 5 may also be a stirrer with stirring blades, and a plurality of second suspended fillers 6 of the present embodiment are located in the anaerobic tank 4, and through a great deal of experiments by the inventors, it is found that when the adding proportion of the first suspended fillers 3 of the present embodiment is preferably 15-20%, the anaerobic treatment effect is the best. It should be noted that the adding ratio of the suspended filler in this embodiment refers to the ratio of the area of the suspended filler to the surface area of the hydrolysis acidification tank 1 or the anaerobic tank 4.
The sludge settling mechanism of this embodiment includes sedimentation tank 7, and sedimentation tank 7's bottom is the circular cone type, the sludge settling of being convenient for.
The aerobic aeration mechanism of the embodiment comprises a primary aerobic aeration part and a secondary aerobic aeration part which are communicated; wherein, the first-stage aerobic aeration part is communicated with the sludge sedimentation mechanism, and the second-stage aerobic aeration part is communicated with the ceramic membrane treatment mechanism. The aerobic reaction tank of the embodiment is designed in two stages, and is provided with two aerobic aeration parts, and the two-stage design can realize screening and enrichment of microbial floras with different advantages.
Specifically, the primary aerobic aeration part of the present embodiment comprises a first aerobic tank 8, a first aeration device 9 and a first suspended filler 10; the first aeration device 9 is arranged at the bottom of the first aerobic tank 8; a plurality of first hanging fillers 10 are fixedly arranged in the first aerobic tank 8 at intervals.
Similarly, the secondary aerobic aeration part of the embodiment comprises a second aerobic tank 11, a second aeration device 12 and a second suspension filler 13; the second aeration device 12 is arranged at the bottom of the second aerobic tank 11; a plurality of second hanging fillers 13 are fixedly arranged in the second aerobic tank 11 at intervals. And aeration systems are arranged in the two-stage aerobic reaction systems, suspended type fixed biological fillers are installed, different microbial floras are attached to the fixed biological fillers, and pollutants in the sewage are efficiently and pertinently removed.
Preferably, in order to ensure that the oxygen amount of the aerobic aeration part can meet the requirement, the present embodiment further comprises a fresh air introducing device 14 communicated with the aerobic aeration mechanism, and the fresh air introducing device 14 can be an existing blower or the like.
The oily sewage enters a ceramic membrane treatment mechanism after two-stage aerobic aeration treatment, and the ceramic membrane treatment mechanism comprises a ceramic membrane pool 15 and a ceramic membrane component 16 (namely a ceramic membrane bioreactor) arranged at the bottom of the ceramic membrane pool 15.
Compared with an organic membrane bioreactor, the concentration enrichment ratio of the sludge in the ceramic membrane bioreactor is higher, the concentration of the sludge in the organic membrane bioreactor is generally 6000-20000 mg/L, the concentration of the sludge in the ceramic membrane bioreactor can reach 15000-20000mg/L, the microbial biomass can be increased by more than one time in the same reactor, and the treatment effect is improved; and compared with an organic membrane, the ceramic membrane has great advantages in service life and life cycle cost.
preferably, the ceramic membrane module 16 of the present embodiment is coated with a nanocoating (not shown). The surface of the ceramic membrane is coated with the nano material, so that the hydrophobicity of the ceramic membrane is improved, and pollutants are not easy to attach to the surface of the membrane to cause membrane pollution and blockage.
Based on the structure of the ceramic membrane treatment mechanism, the ceramic membrane treatment mechanism of the embodiment further comprises a water tank 17, a backwashing pump 18 and a self-priming pump 19; the backwashing pump 18 is respectively communicated with the water tank 17 and the ceramic membrane tank 15 so as to guide the water body of the water tank 17 into the ceramic membrane tank 15; the self-priming pump 19 is respectively communicated with the water tank 17 and the ceramic membrane tank 15 so as to guide the water body of the ceramic membrane tank 15 into the water tank 17. The self priming pump 19 makes the sewage up to standard after handling discharge through ceramic diaphragm through drawing water, and the backwash pump 18 mainly regularly carries out the backwash to ceramic diaphragm, perhaps regularly medicament washs.
Based on the above structure, the sludge circulation mechanism of the present embodiment includes a first sludge circulation unit and a second sludge circulation unit; the first sludge circulating part is communicated with the hydrolysis acidification mechanism and the sludge precipitation mechanism; the second sludge circulating part is communicated with the hydrolysis acidification mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism.
Specifically, the first sludge circulation unit of this embodiment includes a first sludge recirculation pump 20 and a first recirculation line 21, and both ends of the first recirculation line 21 are respectively communicated with the sedimentation tank 7 and the hydrolysis acidification tank 1, and the first sludge recirculation pump 20 is communicated with the first recirculation line 21, and the sludge deposited in the sludge sedimentation mechanism is conveyed to the hydrolysis acidification tank 1 through the first sludge recirculation pump 20.
The second sludge circulating part of the embodiment includes a second sludge return pump 22 and a second return pipeline 23, one end of the second return pipeline 23 is communicated with the ceramic membrane pool 15, the other end of the second return pipeline is communicated with the hydrolysis acidification pool 1 and the first aerobic pool 8, the second sludge return pump 22 is communicated with the second return pipeline 23, and sludge deposited in the ceramic membrane pool 15 is conveyed to the hydrolysis acidification pool 1 and the first aerobic pool 8 through the second sludge return pump 22.
Based on the oily sewage treatment system based on the ceramic membrane bioreaction, the embodiment also provides a specific method for sewage treatment by using the treatment system and control parameters of each treatment link so as to achieve the optimal treatment effect.
specifically, the adding proportion of the suspended biological filler in the hydrolysis acidification tank 1 is 15-20%; the dissolved oxygen is controlled below 0.5mg/L, the hydraulic retention time is 4-8h, and the COD removal rate is 80% -90%.
The adding proportion of the suspended biological filler in the anaerobic reactor of the embodiment is 15-20%; the dissolved oxygen is controlled below 0.1mg/L, the hydraulic retention time is 8-12h, and the COD removal rate is 60% -80%.
After anaerobic sludge precipitation, the proportion of the sludge flowing back to the anaerobic tank 4 is controlled to be 80-100%, and the sludge concentration of the system is controlled to be 8000-10000 m/L.
In the embodiment, the biological filler is installed and fixed in the first-stage aerobic aeration part, the installation proportion of the biological filler is 15-20%, the dissolved oxygen is controlled at 2-4mg/L, the hydraulic retention time is 8-12h, and the COD removal rate is about 85%.
The secondary aerobic aeration part of the embodiment is provided with fixed biological fillers, the installation proportion of the biological fillers is 15-20%, the dissolved oxygen is controlled at 1-2mg/L, and the hydraulic retention time is 4-8 h.
The design flux of the ceramic membrane module 16 of the embodiment is 0.2-0.5m3/m2.h (the volume of sewage passing through per unit time of surface area per square meter), and the hydraulic retention time of the sewage in the ceramic membrane pool 15 is 2 h.
The reflux amount of the sludge reflux pump in the ceramic membrane pool 15 of the embodiment is basically 80-100% of the water inflow, wherein the reflux amount is 20% of the reflux amount in the hydrolysis acidification pool 1 and 80% of the reflux amount in the first aerobic pool 8.
The gas-water ratio of the aerobic aeration mechanism and the ceramic membrane treatment mechanism in the embodiment is controlled to be 20-30: 1.
In the description of the present invention, it is to be understood that the terms "inside", "outside", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An oily sewage treatment system based on ceramic membrane biological reaction is characterized by comprising a hydrolysis acidification mechanism, an anaerobic treatment mechanism, a sludge precipitation mechanism, an aerobic aeration mechanism, a ceramic membrane treatment mechanism and a sludge circulation mechanism;
The hydrolysis acidification mechanism, the anaerobic treatment mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism are communicated in sequence;
The sludge circulating mechanism is communicated with the hydrolysis acidification mechanism, the sludge precipitation mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism, and is used for conveying sludge in the sludge precipitation mechanism to the hydrolysis acidification mechanism in a backflow mode and conveying sludge in the ceramic membrane treatment mechanism to the hydrolysis acidification mechanism and the aerobic aeration mechanism in a backflow mode.
2. The oily sewage treatment system based on ceramic membrane bioreaction as claimed in claim 1, wherein the hydrolysis acidification mechanism comprises a hydrolysis acidification tank, a first stirring device and a first suspension filler; the first stirring device is installed at the bottom of the hydrolysis acidification tank, and the first suspension fillers are located in the hydrolysis acidification tank.
3. The ceramic membrane bioreaction-based oily sewage treatment system according to claim 1, wherein the anaerobic treatment mechanism comprises an anaerobic tank, a second stirring device and a second suspended filler; the second stirring device is arranged at the bottom of the anaerobic tank, and the second suspended fillers are located in the anaerobic tank.
4. The oily sewage treatment system based on ceramic membrane bioreaction as claimed in claim 1, wherein the aerobic aeration means comprises a primary aerobic aeration section and a secondary aerobic aeration section which are communicated, the primary aerobic aeration section being communicated with the sludge precipitation means; the secondary aerobic aeration part is communicated with the ceramic membrane treatment mechanism.
5. The oily sewage treatment system based on ceramic membrane bioreaction as claimed in claim 4, wherein the primary aerobic aeration section comprises a first aerobic tank, a first aeration device and a first suspended filler; the first aeration device is arranged at the bottom of the first aerobic tank; a plurality of first suspended fillers are fixedly arranged in the first aerobic pool at intervals;
And/or the secondary aerobic aeration part comprises a second aerobic tank, a second aeration device and a second suspension filler; the second aeration device is arranged at the bottom of the second aerobic tank; and a plurality of second suspended fillers are fixedly arranged in the second aerobic pool at intervals.
6. The ceramic membrane bioreaction-based oily sewage treatment system according to claim 1, wherein the ceramic membrane treatment mechanism comprises a ceramic membrane tank and a ceramic membrane module mounted at the bottom of the ceramic membrane tank.
7. The ceramic membrane bioreaction-based oily sewage treatment system according to claim 6 wherein the ceramic membrane modules are coated with a nanocoating.
8. the ceramic membrane bioreaction-based oily sewage treatment system according to claim 7, wherein the ceramic membrane treatment mechanism further comprises a water tank, a backwash pump and a self-priming pump; the backwashing pump is respectively communicated with the water tank and the ceramic membrane tank so as to guide the water body of the water tank into the ceramic membrane tank; the self priming pump respectively with the pond with ceramic membrane pond intercommunication, with the water in ceramic membrane pond is leading-in the pond.
9. The ceramic membrane bioreaction-based oily sewage treatment system according to any one of claims 1 to 8 wherein the sludge circulation mechanism comprises a first sludge circulation portion and a second sludge circulation portion; the first sludge circulating part is communicated with the hydrolysis acidification mechanism and the sludge precipitation mechanism; the second sludge circulating part is communicated with the hydrolysis acidification mechanism, the aerobic aeration mechanism and the ceramic membrane treatment mechanism.
10. The ceramic membrane bioreaction-based oily sewage treatment system according to any one of claims 1 to 8, which further comprises a fresh air introducing device communicated with the aerobic aeration mechanism.
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Cited By (1)
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| CN112174306A (en) * | 2020-10-28 | 2021-01-05 | 深圳中清环境科技有限公司 | Ceramic membrane sewage treatment equipment and method based on domesticated active microorganisms |
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Application publication date: 20191210 |