CN111704320B - Sewage treatment system and sewage treatment method for regulating and controlling logarithmic phase growth of microorganisms - Google Patents
Sewage treatment system and sewage treatment method for regulating and controlling logarithmic phase growth of microorganisms Download PDFInfo
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- 239000010865 sewage Substances 0.000 title claims abstract description 55
- 244000005700 microbiome Species 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000012010 growth Effects 0.000 title claims abstract description 15
- 230000001276 controlling effect Effects 0.000 title claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000004062 sedimentation Methods 0.000 claims abstract description 35
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 239000010802 sludge Substances 0.000 claims abstract description 22
- 238000010992 reflux Methods 0.000 claims abstract description 17
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 17
- 238000005273 aeration Methods 0.000 claims abstract description 15
- 239000000969 carrier Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 239000008394 flocculating agent Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
- 229960000892 attapulgite Drugs 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 3
- 239000006247 magnetic powder Substances 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 claims 2
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- 230000000813 microbial effect Effects 0.000 abstract description 5
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- 238000005265 energy consumption Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
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- 231100000719 pollutant Toxicity 0.000 description 2
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- 239000013589 supplement Substances 0.000 description 2
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- 239000002028 Biomass Substances 0.000 description 1
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- 230000002401 inhibitory effect Effects 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
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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
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
-
- 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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a sewage treatment system for regulating and controlling logarithmic phase growth of microorganisms, which comprises a water inlet pipe, a water inlet baffle, an A-level biochemical pool, a submersible mixer, an overflow plate, an O-level biochemical pool, a microporous aeration head, an aeration device, a secondary sedimentation pool, a sludge reflux pump, an overflow groove, an inclined pipe, a cyclone centrifugal separation device, a pipeline mixer, a dosing device, a disinfection pool, an ultraviolet lamp tube and a water outlet pipe. The invention also provides a method for treating sewage by using the system. The invention sets cyclone centrifugal separation equipment in the sludge reflux, which can separate micron-sized high-flow carriers attached with high-activity microorganisms through centrifugal force and reflux the carriers to a biochemical pool, and aged microbial floccules with poor adhesion force are separated from the carriers, fall off and dispersed under hydraulic shear and return to a secondary sedimentation pool, so that the microorganisms in the biochemical pool are always in logarithmic growth phase, the extremely strong microbial activity and metabolism are kept, and the sludge concentration can reach 8000 plus 10000 mg/L.
Description
Technical Field
The invention relates to the technical field of environment-friendly water treatment, in particular to a sewage treatment system and a sewage treatment method for regulating and controlling logarithmic phase growth of microorganisms.
Background
The sewage treatment process of most cities in China adopts biochemical treatment based on an activated sludge method, and the process applies various biological adsorption theories and flocculation dynamics and can comprehensively treat the urban sewage. The activated sludge method can well aim at organic matters in the sewage, efficiently remove the organic matters and has important significance for primary purification of the sewage. In addition, the method has low use cost and less material and energy consumption, so that the method is widely applied.
Along with the development of industry and agriculture, the urban sewage water yield and the pollutant concentration in modern society gradually increase, the sewage treatment standard is stricter and stricter, the requirement on the discharged water quality is higher and higher, and the traditional process faces the opportunity and the challenge in the aspect of technical optimization.
In the activated sludge process, when the specific growth rate of microorganisms reaches the maximum after the microorganisms grow for a certain period, the microorganisms enter the logarithmic growth phase, if no factors inhibiting or limiting the growth of the microorganisms exist in the logarithmic growth phase, the microorganisms keep a constant maximum specific growth rate to grow, the number of cells increases exponentially, but once the microorganisms enter the aging stage, the sewage treatment capacity is poor, and therefore, the microorganisms need to be supplemented regularly. At present, most of the methods adopt a sludge backflow method to supplement microorganisms, the sludge contains the microorganisms in all stages, and although the microorganisms in an aerobic treatment section are supplemented, the microorganisms in a logarithmic growth phase only account for one part, so that the energy consumption is improved, and the treatment efficiency is reduced. Therefore, there is a need for a wastewater treatment plant and process that can selectively supplement the return flow with microorganisms in the logarithmic growth phase.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a sewage treatment system for regulating and controlling the logarithmic phase growth of microorganisms.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a sewage treatment system for regulating and controlling logarithmic phase growth of microorganisms comprises an A-level biochemical tank, an O-level biochemical tank, a secondary sedimentation tank and a disinfection tank which are sequentially communicated;
the left side wall of the A-level biochemical pool is provided with a water inlet pipe, the bottom of the A-level biochemical pool is provided with a submersible mixer, and the right side of the A-level biochemical pool is communicated with the O-level biochemical pool through an overflow plate;
the bottom of the O-level biochemical tank is provided with a plurality of microporous aeration heads which are connected in series, and the upper part of the right side of the O-level biochemical tank is communicated with the upper part of the secondary sedimentation tank through a mixed water pipe;
a plurality of groups of inclined pipes are arranged at the lower part of the secondary sedimentation tank, an overflow groove is arranged at the right side of the upper part of the secondary sedimentation tank, and a sludge reflux pump is arranged at the bottom of the secondary sedimentation tank and below the inclined pipes;
the bottom of the sludge reflux pump is communicated with the top of the cyclone centrifugal separation equipment, and the bottom of the cyclone centrifugal separation equipment is respectively communicated with the A-level biochemical tank and the O-level biochemical tank;
the lower part of the disinfection tank is provided with an ultraviolet lamp tube, and the upper part of the right side wall of the disinfection tank is provided with a water outlet pipe.
Preferably, the upper part of the left side of the A-level biochemical pool is also provided with a water inlet baffle.
Preferably, a pipeline mixer is further arranged on the mixing water pipe.
Preferably, the line mixer is connected to an external dosing device.
Preferably, the dosing device is a metering pump.
Preferably, the cyclonic centrifugal separation apparatus is a cyclonic centrifugal separator.
Preferably, the top of the cyclone centrifugal separation equipment is also communicated with a mixing water pipe.
The invention also provides a method for treating sewage by using the device, which comprises the following steps:
(1) sewage after oil removal and sand removal passes through the A-level biochemical pool, the O-level biochemical pool, the secondary sedimentation pool and the disinfection pool in sequence, and water treatment microorganism high-flow carriers are respectively put into the A-level biochemical pool and the O-level biochemical pool;
(2) starting a submersible mixer at the bottom of the A-level biochemical pool, and controlling the dissolved oxygen content of the sewage in the A-level biochemical pool to be not more than 0.2 mg/L;
(3) supplementing oxygen to the sewage in the O-level biochemical pool through an aeration device and a microporous aeration head, so that the dissolved oxygen content of the sewage in the O-level biochemical pool is 0.2-2 mg/L;
(4) a plurality of groups of inclined pipes are arranged at the lower part of the secondary sedimentation tank, a sludge reflux pump is arranged below the inclined pipes, so that slurry with higher density at the lower part in the secondary sedimentation tank flows back to the cyclone centrifugal separation equipment through the sludge reflux pump, and clear water at the upper part flows to the disinfection tank through an overflow tank;
(5) after the slurry in the step (4) is subjected to cyclone separation by cyclone centrifugal separation equipment, light substances on the upper part of the cyclone centrifugal separation equipment return to a secondary sedimentation tank, and heavy substances on the lower part return to an A-level biochemical tank and an O-level biochemical tank;
(6) adding a flocculating agent into the sewage before the sewage flows into the secondary sedimentation tank.
Preferably, the ratio of the adding amount of the high flow carriers of the water treatment microorganisms to the feed liquid of the sewage is 200-400 mg/L.
Preferably, the particle size of the water treatment microorganism high-mobility carrier is 260-500 μm.
Preferably, the preparation method of the water treatment microorganism high-flow carrier comprises the following steps:
mixing bentonite, fly ash, hydroxyapatite, starch, attapulgite, calcium carbonate, carbon powder and magnetic powder, ball-milling until the particle size is 10-20 μm, granulating and molding the mixture, and roasting to obtain the product.
Preferably, when the mixture is granulated and molded, the mixture is made into particles with a water content of 2 to 5 percent and a particle size of 300 mu m by a pressure spray dryer and then the particles are roasted.
Preferably, the bottom flow rate of the cyclone centrifugal separation device in the step (5) is 10-20%.
Preferably, the addition amount of the flocculating agent in the step (6) and the feed-liquid ratio of the sewage are 5-20 g/t.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the invention adds water into the biochemical pool to process the microorganism high-flow carrier, provides a larger attachment surface for the growth of the microorganism, and the microorganism is attached on the surface and forms a biological film, thereby improving the biomass and the concentration of the microorganism.
2. The invention sets a cyclone centrifugal separation device in the sludge reflux, which can separate micron-sized high-flow carriers attached with high-activity microorganisms through centrifugal force and reflux the carriers to a biochemical pool, and aged microbial floccules with poor adhesive force are separated from the carriers, fall off and dispersed under hydraulic shear and return to a secondary sedimentation pool from an overflow port, so that the microorganisms in the biochemical pool are always in logarithmic growth phase, the strong microbial activity and metabolism are kept, and the sludge concentration can reach 8000 plus 10000 mg/L.
Drawings
FIG. 1 is a schematic view showing the structure of a sewage treatment system according to the present invention.
In the attached drawing, 1-a water inlet pipe, 2-a water inlet baffle, 3-a level biochemical pool, 4-a submersible mixer, 5-an overflow plate, 6-O level biochemical pool, 7-a microporous aeration head, 8-an aeration device, 9-a secondary sedimentation pool, 10-a sludge reflux pump, 11-an overflow trough, 12-an inclined pipe, 13-a cyclone centrifugal separation device, 14-a pipeline mixer, 15-a dosing device, 16-a disinfection pool, 17-an ultraviolet lamp tube, 18-a water outlet pipe and 19-a mixed water pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
A sewage treatment system for regulating and controlling logarithmic phase growth of microorganisms comprises an A-level biochemical tank 3, an O-level biochemical tank 6, a secondary sedimentation tank 9 and a disinfection tank 16 which are sequentially communicated.
3 left side walls in the biochemical pond of A level are equipped with inlet tube 1, and left side upper portion is equipped with into water baffle 2, and the bottom is equipped with dive mixer 4, and the right side is passed through overflow plate 5 and is linked together with the biochemical pond of O level 6.
The bottom of the O-level biochemical pool 6 is provided with a plurality of microporous aeration heads 7 which are connected in series, the microporous aeration heads 7 are connected with an external aeration device 8, and the aeration device 8 adopted in the embodiment is a blower; the upper portion of the right side of the O-level biochemical tank 6 is communicated with the upper portion of the secondary sedimentation tank 9 through a mixed water pipe 19, a pipeline mixer 14 is further arranged on the mixed water pipe 19, the pipeline mixer 14 is connected with an external dosing device 15, and the dosing device 15 adopted in the embodiment is a metering pump.
A plurality of groups of inclined pipes 12 are arranged at the lower part of the secondary sedimentation tank 9, an overflow trough 11 is arranged at the right side of the upper part of the secondary sedimentation tank 9, and a sludge reflux pump 10 is arranged at the bottom of the secondary sedimentation tank 9 and below the inclined pipes 12.
The bottom of the sludge reflux pump 10 is communicated with the top of a cyclone centrifugal separation device 13, the cyclone centrifugal separation device 13 adopted in the embodiment is a cyclone centrifugal separator, the bottom of the cyclone centrifugal separation device 13 is respectively communicated with the A-level biochemical pool 3 and the O-level biochemical pool 6, and the top of the cyclone centrifugal separation device 13 is also communicated with a section, close to the O-level biochemical pool 6, of the mixed water pipe 19.
An ultraviolet lamp tube 17 is arranged at the lower part of the disinfection tank 16, and a water outlet tube 18 is arranged at the upper part of the right side wall of the disinfection tank 16.
When the device is used for sewage treatment, the method comprises the following steps:
(1) the sewage after oil removal and sand removal is led into an A-level biochemical pool 3 from a water inlet pipe 1, and the flow is 2.5m3The daily treatment time is 20h/d, and the daily treatment capacity is 50m3D, the water inlet baffle 2 carries out certain buffering on inlet water, a high flowing carrier of water treatment microorganisms is put into the A-level biochemical pool 3, the feed-liquid ratio of the carrier to sewage is 300mg/L, the submersible mixer 4 is started, the dissolved oxygen content of the sewage in the A-level biochemical pool 3 is controlled to be 0.15mg/L, and the anaerobic/anoxic state in the pool is maintained;
(2) sewage enters an O-level biochemical pool 6 from an overflow plate 5, a high-flow carrier of water treatment microorganisms is put into the O-level biochemical pool 6, the feed-liquid ratio of the carrier to the sewage is 350mg/L, an air blower and a microporous aeration head 7 are started, oxygen is supplemented to the sewage in the O-level biochemical pool 6, and the dissolved oxygen content of the sewage in the O-level biochemical pool 6 is 2 mg/L;
(3) when sewage passes through the pipeline mixer 14 on the mixed water pipe 19 from the O-level biochemical tank 6, polyaluminium chloride (or other flocculating agents) put into the pipeline mixer 14 through a metering pump is mixed with the sewage, the mixture enters the secondary sedimentation tank 9 together, and 10g of the polyaluminium chloride is added into each ton of the sewage;
(4) sewage enters a secondary sedimentation tank 9, flocs in the sewage are precipitated on an inclined pipe 12, a part of suspended matters move to the lower part of the secondary sedimentation tank 9 through the inclined pipe 12, a sludge reflux pump 10 is started, slurry thickened at the bottom of the secondary sedimentation tank 9 is sent into a rotational flow centrifugal separator, in the separator, high-flow carriers of water treatment microorganisms attached in the slurry are separated by centrifugal force, aged microorganism flocculants with poor adhesive force on the carriers are separated from the carriers, fall off and disperse under hydraulic shear, supernatant liquid separated by rotational flow centrifugation enters the secondary sedimentation tank 9 through a mixed water pipe 19, is flocculated again and precipitated on the inclined pipe 12, microorganisms in logarithmic growth phase and with good adhesive force flow and the carriers flow back to the A-level biochemical tank 3 and the O-level biochemical tank 6 from the bottom of the rotational flow centrifugal separator, and microorganisms in 2 biochemical tanks are maintained in the logarithmic growth phase all the time, the microorganism keeps extremely strong microbial activity and metabolism, the treatment efficiency is improved, and the dosage of a new carrier is reduced; when the cyclone centrifugal separator works, the pressure drop is controlled to be 250kPa, and the bottom flow rate is controlled to be 20%;
(5) clear water at the upper part of the secondary sedimentation tank 9 flows to the disinfection tank 16 from the overflow tank 11, the ultraviolet lamp tube 17 sterilizes the clear water in the disinfection tank 16, the treated sewage flows out from the water outlet pipe 18, and the outlet water can be directly discharged or recycled. Through detection, the technical indexes of COD, ammonia nitrogen, total phosphorus and the like in the effluent can stably reach the first-class A standard in the discharge Standard of pollutants for municipal wastewater treatment plants (GB 18918-2002).
The preparation method of the water treatment microorganism high-flow carrier comprises the following steps:
mixing bentonite, fly ash, hydroxyapatite, starch, attapulgite, calcium carbonate, carbon powder and magnetic powder according to the mass ratio of 40:20:20:50:2:3:5:10, then putting the mixture into a ball mill for grinding until the particle size of the mixture is not more than 20 mu m, and keeping the water content of the mixed material at 45%; after grinding, the mixture is made into particles with water content of 5% and particle diameter of 300 μm by pressure spray drying machine, and placed inPresintering at 500 deg.C for 20min in muffle furnace, calcining at 1000 deg.C for 30min, and cooling to obtain product with specific surface area of 375m2A water treatment microorganism high-flow carrier with a porosity of 70 percent.
The embodiments are not described in detail in the prior art or can be implemented by the prior art.
Claims (6)
1. A sewage treatment method for regulating and controlling the logarithmic phase growth of microorganisms is characterized in that the following sewage treatment systems are adopted for treatment;
the sewage treatment system comprises:
the A-level biochemical tank, the O-level biochemical tank, the secondary sedimentation tank and the disinfection tank are sequentially communicated;
the left side wall of the A-level biochemical pool is provided with a water inlet pipe, the bottom of the A-level biochemical pool is provided with a submersible mixer, and the right side of the A-level biochemical pool is communicated with the O-level biochemical pool through an overflow plate;
the bottom of the O-level biochemical tank is provided with a plurality of microporous aeration heads which are connected in series, and the upper part of the right side of the O-level biochemical tank is communicated with the upper part of the secondary sedimentation tank through a mixed water pipe;
a plurality of groups of inclined pipes are arranged at the lower part of the secondary sedimentation tank, an overflow groove is arranged at the right side of the upper part of the secondary sedimentation tank, and a sludge reflux pump is arranged at the bottom of the secondary sedimentation tank and below the inclined pipes;
the bottom of the sludge reflux pump is communicated with the top of the cyclone centrifugal separation equipment, and the bottom of the cyclone centrifugal separation equipment is respectively communicated with the A-level biochemical tank and the O-level biochemical tank;
an ultraviolet lamp tube is arranged at the lower part of the disinfection tank, and a water outlet pipe is arranged at the upper part of the right side wall of the disinfection tank;
the sewage treatment method comprises the following steps:
(1) the sewage after oil separation and sand removal passes through the A-level biochemical pool, the O-level biochemical pool, the secondary sedimentation pool and the disinfection pool in sequence, and water treatment microorganism high-flow carriers with the particle size of 260-;
(2) starting a submersible mixer at the bottom of the A-level biochemical pool, and controlling the dissolved oxygen content of the sewage in the A-level biochemical pool to be not more than 0.2 mg/L;
(3) supplementing oxygen to the sewage in the O-level biochemical pool through an aeration device and a microporous aeration head, so that the dissolved oxygen content of the sewage in the O-level biochemical pool is 0.2-2 mg/L;
(4) a plurality of groups of inclined pipes are arranged at the lower part of the secondary sedimentation tank, a sludge reflux pump is arranged below the inclined pipes, so that slurry with higher density at the lower part in the secondary sedimentation tank flows back to the cyclone centrifugal separation equipment through the sludge reflux pump, and clear water at the upper part flows to the disinfection tank through an overflow tank;
(5) after the slurry in the step (4) is subjected to cyclone separation by cyclone centrifugal separation equipment, light substances on the upper part of the cyclone centrifugal separation equipment return to a secondary sedimentation tank, and heavy substances on the lower part return to an A-level biochemical tank and an O-level biochemical tank; the bottom flow rate of the cyclone centrifugal separation equipment is 10-20%;
(6) before the sewage flows into the secondary sedimentation tank, adding a flocculating agent into the sewage;
the preparation method of the water treatment microorganism high-flow carrier comprises the following steps:
mixing bentonite, fly ash, hydroxyapatite, starch, attapulgite, calcium carbonate, carbon powder and magnetic powder, ball-milling until the particle size is 10-20 μm, granulating and molding the mixture, and roasting to obtain the product.
2. The method of claim 1, wherein a water inlet baffle is further disposed at the upper left side of the A-level biochemical pool.
3. The method for treating sewage by regulating and controlling log-phase growth of microorganisms according to claim 1, wherein a pipeline mixer is further arranged on the mixing water pipe.
4. The method for treating wastewater by regulating logarithmic phase growth of microorganisms according to claim 3, wherein the pipeline mixer is connected with an external drug-adding device.
5. The method as claimed in claim 1, wherein the ratio of the amount of the high mobility carriers to the feed-liquid ratio of the wastewater is 200-400 mg/L.
6. The method for treating sewage by regulating and controlling log-phase growth of microorganisms according to claim 1, wherein the ratio of the addition amount of the flocculant in the step (6) to the feed-liquid ratio of the sewage is 5-20 g/t.
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| CN111847642B (en) * | 2020-06-30 | 2022-07-05 | 桂林理工大学 | High-flow carrier material for water treatment microorganisms, preparation method and water treatment method |
| CN111977919A (en) * | 2020-06-30 | 2020-11-24 | 桂林理工大学 | Method for treating heavy metal polluted bottom mud by utilizing ultrasonic wave-composite acid extraction-chemical precipitation |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417850A (en) * | 2008-11-11 | 2009-04-29 | 江苏百纳环境工程有限公司 | Novel process for treating coking waste water by charging activated sludge process |
| CN101830559A (en) * | 2010-05-13 | 2010-09-15 | 景德镇陶瓷学院 | Magnetic porous environmental-conscious ceramic filter material for water treatment and preparation method thereof |
| CN102211807A (en) * | 2011-05-04 | 2011-10-12 | 南京工业大学 | High-density porous carrier for biological fluidized bed wastewater treatment and preparation method thereof |
| CN102659238A (en) * | 2012-05-18 | 2012-09-12 | 山东化友化学有限公司 | Multifunctional suspended carrier for sewage treatment and preparation method of multifunctional suspended carrier |
| CN202881049U (en) * | 2012-09-23 | 2013-04-17 | 山东贝特尔环保科技有限公司 | Buried type sewage treatment device |
| CN104230301A (en) * | 2014-09-18 | 2014-12-24 | 河海大学 | Biocompatible hydrophilic magnetic sludge fine aggregate carrier and preparation method thereof |
| CN104326554A (en) * | 2014-10-15 | 2015-02-04 | 西安华陆环保设备有限公司 | Method for processing beer waste water by tower-type aerating activated sludge process |
| CN104591378A (en) * | 2015-02-13 | 2015-05-06 | 南京大学 | Biochemical sludge swelling control system and control method thereof |
| CN108298776A (en) * | 2018-04-16 | 2018-07-20 | 沈阳环境科学研究院 | A kind of sewage treatment plant carries mark modernization system and sewage water treatment method |
| CN109368926A (en) * | 2018-11-19 | 2019-02-22 | 中化环境控股有限公司 | A kind of sewage treatment micron vectors and sewage disposal system and method |
| CN111233146A (en) * | 2020-01-16 | 2020-06-05 | 华东理工大学 | Sludge rotational flow sorting activation treatment method and device |
| CN213446685U (en) * | 2020-06-30 | 2021-06-15 | 江苏金舵环境科技有限公司 | Sewage treatment system for regulating and controlling logarithmic phase growth of microorganisms |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5528759A (en) * | 1978-08-24 | 1980-02-29 | Kurita Water Ind Ltd | Treating method of high concentration organic waste water |
| JP3797554B2 (en) * | 2002-10-29 | 2006-07-19 | 株式会社荏原製作所 | Organic wastewater treatment method and equipment |
| JP2005230784A (en) * | 2004-02-23 | 2005-09-02 | Sumitomo Heavy Ind Ltd | Microorganism-immobilized carrier, biological waste water treatment apparatus and biological waste water treatment method |
| KR100661625B1 (en) * | 2004-11-27 | 2007-01-02 | 허인랑 | Denitration apparatus for the wastewater having the nitrogenous compound |
| MX2008002240A (en) * | 2008-02-15 | 2009-08-17 | Mauricio Rico Martinez | Energy optimization in an anaerobic, facultative, anoxic aerobic plant, using fine bubbles, without sludge production. |
| US11214528B2 (en) * | 2011-06-06 | 2022-01-04 | Carbon Technology Holdings, LLC | Treated biochar for use in water treatment systems |
| CN102531201A (en) * | 2012-02-06 | 2012-07-04 | 宁波天韵生态治理工程有限公司 | Method and device for utilizing microorganism in-situ circulation cultivation to treat water body pollution |
-
2020
- 2020-06-30 CN CN202010616335.1A patent/CN111704320B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417850A (en) * | 2008-11-11 | 2009-04-29 | 江苏百纳环境工程有限公司 | Novel process for treating coking waste water by charging activated sludge process |
| CN101830559A (en) * | 2010-05-13 | 2010-09-15 | 景德镇陶瓷学院 | Magnetic porous environmental-conscious ceramic filter material for water treatment and preparation method thereof |
| CN102211807A (en) * | 2011-05-04 | 2011-10-12 | 南京工业大学 | High-density porous carrier for biological fluidized bed wastewater treatment and preparation method thereof |
| CN102659238A (en) * | 2012-05-18 | 2012-09-12 | 山东化友化学有限公司 | Multifunctional suspended carrier for sewage treatment and preparation method of multifunctional suspended carrier |
| CN202881049U (en) * | 2012-09-23 | 2013-04-17 | 山东贝特尔环保科技有限公司 | Buried type sewage treatment device |
| CN104230301A (en) * | 2014-09-18 | 2014-12-24 | 河海大学 | Biocompatible hydrophilic magnetic sludge fine aggregate carrier and preparation method thereof |
| CN104326554A (en) * | 2014-10-15 | 2015-02-04 | 西安华陆环保设备有限公司 | Method for processing beer waste water by tower-type aerating activated sludge process |
| CN104591378A (en) * | 2015-02-13 | 2015-05-06 | 南京大学 | Biochemical sludge swelling control system and control method thereof |
| CN108298776A (en) * | 2018-04-16 | 2018-07-20 | 沈阳环境科学研究院 | A kind of sewage treatment plant carries mark modernization system and sewage water treatment method |
| CN109368926A (en) * | 2018-11-19 | 2019-02-22 | 中化环境控股有限公司 | A kind of sewage treatment micron vectors and sewage disposal system and method |
| CN111233146A (en) * | 2020-01-16 | 2020-06-05 | 华东理工大学 | Sludge rotational flow sorting activation treatment method and device |
| CN213446685U (en) * | 2020-06-30 | 2021-06-15 | 江苏金舵环境科技有限公司 | Sewage treatment system for regulating and controlling logarithmic phase growth of microorganisms |
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|---|---|
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