CN113772810A - Sewage treatment purification system and treatment method thereof - Google Patents
Sewage treatment purification system and treatment method thereof Download PDFInfo
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- CN113772810A CN113772810A CN202111023637.9A CN202111023637A CN113772810A CN 113772810 A CN113772810 A CN 113772810A CN 202111023637 A CN202111023637 A CN 202111023637A CN 113772810 A CN113772810 A CN 113772810A
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- 239000010865 sewage Substances 0.000 title claims abstract description 75
- 238000000746 purification Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000010802 sludge Substances 0.000 claims abstract description 152
- 238000006243 chemical reaction Methods 0.000 claims abstract description 72
- 238000004062 sedimentation Methods 0.000 claims abstract description 60
- 238000005273 aeration Methods 0.000 claims abstract description 45
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000001301 oxygen Substances 0.000 claims abstract description 28
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000001556 precipitation Methods 0.000 claims abstract description 26
- 230000001737 promoting effect Effects 0.000 claims abstract description 12
- 239000006228 supernatant Substances 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000004332 deodorization Methods 0.000 claims description 27
- 238000006303 photolysis reaction Methods 0.000 claims description 23
- 230000015843 photosynthesis, light reaction Effects 0.000 claims description 23
- 238000005507 spraying Methods 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 17
- 238000005260 corrosion Methods 0.000 claims description 15
- 230000007797 corrosion Effects 0.000 claims description 15
- 239000002957 persistent organic pollutant Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 8
- 238000004065 wastewater treatment Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
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Images
Classifications
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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
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
- B01D53/323—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
-
- 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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- 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
- C02F2303/02—Odour removal or prevention of malodour
-
- 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
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a sewage treatment and purification system and a treatment method thereof, wherein the sewage treatment and purification system comprises a reaction and precipitation integrated biochemical pool, a sludge treatment unit and an odor purification unit; the reaction and sedimentation integrated biochemical tank comprises a tank body, a top cover, a reactor arranged in the upper end of the tank body and an aeration device; a reaction sedimentation cavity is formed in the reactor, and the upper end of the reactor is formed into a liquid discharge end for discharging supernatant; the bottom end of the reaction sedimentation cavity is communicated with the interior of the tank body; the aeration device is arranged at the bottom of the tank body and is used for providing power for promoting activated sludge and sewage in the tank body to enter the reaction sedimentation cavity when supplying dissolved oxygen and also used for providing power for promoting the sewage to circularly flow in the reaction sedimentation cavity. The invention integrates the functions of circulation, reaction, separation and automatic sludge backflow, can purify sewage, and can reduce floor area, energy consumption and cost.
Description
Technical Field
The invention relates to a sewage treatment and purification system and a sewage treatment method.
Background
The sewage treatment and purification system is used as a common system of a sewage treatment plant and is mainly used for improving the sewage condition so as to improve the living quality of people. The conventional sewage treatment system generally includes an aeration tank, an aeration device for supplying dissolved oxygen to the aeration tank, a secondary sedimentation tank, a sludge treatment system, a mixed liquid feeding device and an activated sludge feeding device for being disposed between the aeration tank and the secondary sedimentation tank, and an odor purification unit. When the device is used, sewage and returned activated sludge enter the aeration tank to form mixed liquid, dissolved oxygen is supplied through the aeration device, the sewage, the dissolved oxygen and the activated sludge form mixed liquid and are conveyed to the secondary sedimentation tank through the mixed liquid conveying device, the suspended activated sludge in the mixed liquid is precipitated and separated from liquid after the mixed liquid enters the secondary sedimentation tank, the liquid in the secondary sedimentation tank, which is used for removing the activated sludge and organic pollutants, is formed into supernatant and is discharged from a water outlet of the secondary sedimentation tank, the activated sludge in the secondary sedimentation tank is conveyed back to the aeration tank through the activated sludge conveying device, the sludge discharged from the secondary sedimentation tank is treated through a sludge treatment system, and odor discharged from the aeration tank and the secondary sedimentation tank is purified through an odor purification unit. The existing sewage treatment system can realize sewage purification only by combining the aeration tank and the secondary sedimentation tank, so that the occupied area is large, and the existing sewage treatment system also needs to adopt a mixed liquid conveying device and an activated sludge conveying device, so that the mixed liquid conveying device and the activated sludge conveying device consume more energy, thereby increasing the cost.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, an object of the present invention is to provide a sewage treatment and purification system, which can purify sewage, reduce floor space, reduce energy consumption, and save cost.
The invention also aims to provide a treatment method of the sewage treatment and purification system.
One of the purposes of the invention is realized by adopting the following technical scheme:
a sewage treatment and purification system comprises a reaction and precipitation integrated biochemical pool, a sludge treatment unit and an odor purification unit; the reaction and precipitation integrated biochemical pool is provided with an air outlet; the sludge treatment unit is used for dehydrating the sludge discharged by the reaction and precipitation integrated biochemical tank; the odor purification unit is connected with an air outlet of the reaction and precipitation integrated biochemical pool; the reaction and sedimentation integrated biochemical tank comprises a tank body, a top cover covered on the tank body, a reactor arranged in the upper end of the tank body and an aeration device; a reaction sedimentation cavity is formed in the reactor, and the upper end of the reactor is formed into a liquid discharge end for discharging supernatant; the bottom end of the reaction sedimentation cavity is communicated with the interior of the tank body; the aeration device is arranged at the bottom of the tank body and is used for providing power for promoting activated sludge and sewage in the tank body to enter the reaction sedimentation cavity when supplying dissolved oxygen and also used for providing power for promoting the sewage to circularly flow in the reaction sedimentation cavity.
The top cover comprises a supporting framework and a corrosion-resistant film; the corrosion-resistant film is used for covering the tank body and enclosing with the tank body to form an air chamber, the support framework is positioned outside the air chamber, and the corrosion-resistant film is connected to the support framework.
The sewage treatment and purification system also comprises an effluent weir, wherein the effluent weir is positioned in the upper end of the reactor.
The sludge treatment unit comprises a sludge dewatering device, a sludge bin and a first conveying device, wherein the first conveying device is used for receiving sludge from the sludge dewatering device and conveying the sludge to the sludge bin.
The sludge dewatering device comprises a sludge concentration tank, a sludge storage tank, a second conveying device for conveying sludge from the sludge concentration tank to the sludge storage tank, a dewatering machine and a third conveying device for conveying sludge from the sludge storage tank to the dewatering machine.
The odor purification unit comprises a spraying washing device, a first fan, a biological deodorization device, an ultraviolet photolysis device and a post purification device; the first fan is used for providing power for promoting gas to flow through the spraying and washing equipment, the biological deodorization device, the ultraviolet photolysis equipment and the rear purification device in sequence.
The spraying and washing equipment, the first fan, the biological deodorization device, the ultraviolet photolysis equipment and the rear purification device are sequentially connected; the biological deodorization device comprises a biological deodorization tower.
The second purpose of the invention is realized by adopting the following technical scheme:
the treatment method of the sewage treatment and purification system comprises the following steps:
the sewage treatment step: sewage in the tank body enters from the bottom end of the reaction sedimentation cavity to the reaction sedimentation cavity under the action of power provided by the aeration device when dissolved oxygen is supplied, activated sludge in the tank body enters from the bottom end of the reaction sedimentation cavity to the reaction sedimentation cavity along with the sewage under the action of power provided by the aeration device when dissolved oxygen is supplied, the sewage entering the reaction sedimentation cavity circularly moves under the action of power provided by the aeration device when dissolved oxygen is supplied and is fully mixed with the activated sludge and the dissolved oxygen in the reactor to decompose organic pollutants in the sewage, the activated sludge in the reactor settles towards the tank body from the reaction sedimentation cavity when the aeration device stops supplying the dissolved oxygen, liquid in the reactor for removing the organic pollutants and the activated sludge forms supernatant and is discharged from the liquid discharge end of the reactor, and when the activated sludge is settled and returns to the tank body, the activated sludge and the sewage in the tank body are continuously mixed in the reactor in the above mode to purify the sewage;
sludge treatment: dewatering the sludge discharged from the reaction and precipitation integrated biochemical tank by using a sludge treatment unit;
and (3) odor treatment: and purifying the odor discharged by the reaction and precipitation integrated biochemical pool by using an odor purification unit.
The odor purification unit comprises a spraying washing device, a first fan, a biological deodorization device, an ultraviolet photolysis device and a post purification device; the first fan is used for providing power for promoting gas to sequentially flow through the spraying washing equipment, the biological deodorization device, the ultraviolet photolysis equipment and the rear purification device;
wherein, in the odor treatment step, the odor is firstly sprayed and washed by a spraying and washing device, then is biologically deodorized by a biological deodorization device, then is subjected to ultraviolet photolysis by an ultraviolet photolysis device, and finally flows to a post-purification device for post-purification.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the biochemical tank integrating reaction and sedimentation adopts a combined design of the tank body, the top cover, the reactor and the aeration device, so that sewage can be purified, a secondary sedimentation tank is not required, the occupied area can be reduced, the aeration device provides power for sewage and activated sludge movement, a sludge reflux pump is not required to provide power, a mixed liquid conveying device and an activated sludge conveying device are not required, electric energy can be saved, energy consumption is reduced, and the cost is saved; moreover, the service life of the top cover can be prolonged by reasonably arranging the top cover; in addition, through reasonable arrangement of the odor purification unit, the odor purification effect can be obviously improved, and odorless and ultra-clean emission is realized.
Drawings
FIG. 1 is a schematic view of a wastewater treatment purification system of the present invention;
FIG. 2 is a side view of the reaction-precipitation integrated biochemical tank;
FIG. 3 is a schematic view of the interior of the tank body;
FIG. 4 is a schematic structural view of a top cover;
FIG. 5 is a partial cross-sectional view of a corrosion-resistant film;
FIG. 6 is a schematic view of an odor purification unit;
wherein, 10, a reaction and precipitation integrated biochemical pool; 11. a tank body; 12. an aeration device; 20. an odor purifying unit; 21. spraying washing equipment; 22. an ultraviolet photolysis device; 30. a biological deodorization device; 31. a biological deodorization tower; 32. a water supply main pipeline; 33. spraying a water inlet pipeline; 34. an electrically operated valve; 35. a first branch; 36. an air volume adjusting valve; 37. a second branch circuit; 38. a flow meter; 39. a main road; 40. a post-purification device; 41. an activated carbon adsorption tank; 42. a high energy ion device; 50. a top cover; 51. a support framework; 52. a corrosion resistant film; 61. a polyester fiber cloth layer; 62. a polyvinyl chloride alloy coating; 63. a layer of polyvinyl difluoride; 70. a drug delivery line; 71. a spray water inlet connecting pipe; 72. an administration tube; 73. a medicine chest; 80. a sludge treatment unit; 81. a drain pipe; 82. a first fan; 83. a mud storage pool; 84. a sludge dewatering device; 85. a sludge bin; 86. a first conveying device; 87. a sludge concentration tank; 88. a second conveying device; 89. a dehydrator; 90. a reactor; 91. a reaction precipitation cavity; 92. a liquid discharge end; 93. an effluent weir; 94. a cylinder; 95. a hollow circular truncated cone; 96. an external enclosure wall; 97. an overflow tank; 98. a baffle; 99. and a third conveying device.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1 to 6, a sewage treatment purification system includes a reaction-precipitation integrated biochemical tank 10, a sludge treatment unit 80, and an odor purification unit 20; the reaction and precipitation integrated biochemical tank 10 is provided with an air outlet; the sludge treatment unit 80 is used for dehydrating the sludge discharged from the reaction and precipitation integrated biochemical tank 10; the odor purification unit 20 is connected with the air outlet of the reaction and precipitation integrated biochemical pool 10; the reaction and sedimentation integrated biochemical tank 10 comprises a tank body 11, a top cover 50 covered on the tank body 11, a reactor 90 arranged in the upper end of the tank body 11 and an aeration device 12; a reaction sedimentation cavity 91 is formed in the reactor 90, and the upper end of the reactor 90 is formed into a liquid discharge end 92 for discharging supernatant liquid; the bottom end of the reaction sedimentation cavity 91 is communicated with the interior of the tank body 11; the aeration device 12 is arranged at the bottom of the tank body 11, and the aeration device 12 is used for providing power for promoting the activated sludge and the sewage in the tank body 11 to enter the reaction sedimentation cavity 91 when supplying the dissolved oxygen, and is also used for providing power for promoting the sewage to circularly flow in the reaction sedimentation cavity 91.
When in use, sewage in the tank body 11 enters from the bottom end of the reaction sedimentation cavity 91 to the reaction sedimentation cavity 91 under the power provided by the aeration device 12 when supplying dissolved oxygen, activated sludge in the tank body 11 enters from the bottom end of the reaction sedimentation cavity 91 to the reaction sedimentation cavity 91 along with the sewage under the power provided by the aeration device 12 when supplying dissolved oxygen, the sewage entering the reaction sedimentation cavity 91 carries out circular motion under the power provided by the aeration device 12 when supplying dissolved oxygen and is mixed with the activated sludge in the reactor 90 and the dissolved oxygen supplied by the aeration device 12, and the sewage carries out circular motion from bottom to top to bottom in the reaction sedimentation cavity 91, so that the activated sludge can be more fully contacted with organic pollutants in water, and the organic pollutants in the sewage are decomposed under the biological coagulation, adsorption and oxidation actions of the activated sludge, when the aeration device 12 stops supplying dissolved oxygen, the activated sludge in the reactor 90 settles from the reaction settling zone towards the tank body 11 under the action of the self gravity, organic pollutants are removed in the reactor 90, the liquid of the activated sludge is formed into supernatant and discharged from the liquid discharge end 92 of the reactor 90, the activated sludge is settled back into the tank body 11, and then the activated sludge enters the reactor 90 along with the sewage in the tank body 11 in the way to be continuously purified, and because the activated sludge continuously enters the reactor 90 along with the sewage in the tank body 11 in the sewage purification process, the reactor 90 can always keep higher activated sludge concentration, the sewage purification effect can be ensured, the quality of the discharged water body can be ensured, and because the activated sludge settles from the reactor 90 to the tank body 11, the path of activated sludge backflow can be reduced, and the aeration effect of intercepting the activated sludge can be achieved through the aeration device 12 aeration, effectively improves the concentration of the activated sludge. According to the invention, the biochemical tank 10 integrating reaction and sedimentation adopts the combined design of the tank body 11, the top cover 50, the reactor 90 and the aeration device 12, so that sewage can be purified, a secondary sedimentation tank is not required, the occupied area can be reduced, the aeration device 12 is used for providing power for sewage and activated sludge movement, a sludge reflux pump is not required for providing power, a mixed liquid conveying device and an activated sludge conveying device are not required, electric energy can be saved, energy consumption is reduced, and the cost is saved. And because sewage circularly moves in the reaction sedimentation cavity 91, the activated sludge can be more fully contacted with organic pollutants in water, and the sludge sedimentation and sludge-water separation are more facilitated under the synergistic action of gas stirring and hydraulic shearing.
The aeration device 12 may be an aerator equipped with a blower, etc., as long as it can supply dissolved oxygen and provide corresponding power. Meanwhile, due to the configuration of the aeration device 12, the odor generated in the reaction and precipitation integrated biochemical pool 10 can be accelerated to overflow to the odor purifying unit 20.
The top cover 50 comprises a supporting framework 51 and a corrosion-resistant film 52; the corrosion-resistant film 52 is used for covering the tank body 11 and enclosing the tank body 11 into an air chamber, the support framework 51 is positioned outside the air chamber, and the corrosion-resistant film 52 is connected to the support framework 51, so that the odor generated in the support framework 51 and the air chamber can be prevented from directly contacting with each other to prevent the support framework 51 from being corroded by the odor, and the service life of the top cover 50 can be effectively prolonged
The corrosion-resistant film 52 is a fluorocarbon fiber film, so that the corrosion-resistant film has good corrosion resistance and light weight, and the self-weight load of the top cover 50 can be reduced. Specifically, the corrosion-resistant film 52 includes a polyester fiber cloth layer 61, a polyvinyl chloride alloy coating layer 62 disposed on the polyester fiber cloth layer 61, and a polyvinyl fluoride layer 63 disposed on the polyvinyl chloride alloy coating layer 62. And through the combination that will corrode resistant membrane 52 and adopt polyester fiber cloth layer 61, polyvinyl chloride alloy coating 62, polyvinylidene fluoride layer 63, can provide acid and alkali resistance, and can provide self-cleaning performance, still make anticorrosive membrane 52 comparatively smooth simultaneously, so that snow is difficult to pile up on the face of membrane, and because the membrane dead weight is very little, and the structure belongs to the flexible system, the period of natural vibration is long, consequently can reduce the influence of seismic action by a wide margin, polyester fiber cloth layer 61 of high tension longitude and latitude to polyester filament is the atress part of membrane system material structure, provide high strong structural performance.
The wastewater treatment purification system also includes an effluent weir 93, the effluent weir 93 being located in the upper end of the reactor 90.
Wherein, the reactor 90 comprises a cylinder 94 and a hollow circular truncated cone 95 arranged at the lower end of the cylinder 94; the inner diameter of the hollow truncated cone 95 gradually decreases from the end thereof close to the cylinder 94 to the end thereof far from the cylinder 94; the interior of the hollow circular truncated cone 95 is communicated with the interior of the cylinder 94 to form a reaction sedimentation chamber 91, the outer side of the upper end of the cylinder 94 is further provided with an external surrounding wall 96, the top surface of the external surrounding wall 96 is higher than the top surface of the cylinder 94, and the external surrounding wall 96 and the upper end of the cylinder 94 form an overflow groove 97 in a surrounding mode, so that supernatant can overflow the overflow groove 97 and is discharged outwards through a drainage component communicated with the overflow groove 97. A guide plate 98 is also arranged in the reaction settling cavity 91 to play a role in guiding flow.
Of course, the reaction-precipitation integrated biochemical tank 10 may adopt, in addition to the reactor 90 having the above structure, an existing reactor 90 having other structures on the market as long as the use requirement thereof can be satisfied. However, the reactor 90 having the above structure is the most preferable embodiment of the present invention, and the cost can be reduced.
The sludge treatment unit 80 comprises a sludge dewatering device 84, a sludge bin 85, a first conveying device 86 for receiving sludge from the sludge dewatering device 84 and conveying sludge to the sludge bin 85. The sludge dewatering device 84 includes a sludge concentration tank 87, a sludge storage tank 83, a second conveying device 88 for conveying sludge from the sludge concentration tank 87 to the sludge storage tank 83, a dewatering machine 89, and a third conveying device 99 for conveying sludge from the sludge storage tank 83 to the dewatering machine 89. The first conveying device 86, the second conveying device 88 and the third conveying device 99 may be conveying pipelines with sludge pumps, screw conveyors or the like, as long as the conveying function is satisfied. When the device is used, sludge discharged from the reaction and precipitation integrated biochemical tank 10 is firstly fed into the sludge concentration tank 87 for gravity concentration, the concentrated sludge is conveyed to the sludge storage tank 83 through the second conveying device 88 and is homogenized in the sludge storage tank 83, the sludge is conveyed into the dehydrator 89 through the third conveying device 99 after being homogenized, the sludge is dehydrated in the dehydrator 89, and the sludge is conveyed to the sludge bin 85 through the first conveying device 86 after the dehydration is completed. For further optimization, a sludge drying device and a fourth conveying device may be further provided, and the sludge is conveyed from the sludge bin 85 to the sludge drying device by the fourth conveying device for drying treatment.
The sludge treatment unit 80 is also connected to the odor purification unit 20 so that the exhaust gas discharged from the sludge treatment unit 80 can be purified by the odor purification unit 20.
The odor purification unit 20 comprises a spray washing device 21, a first fan 82, a biological deodorization device 30, an ultraviolet photolysis device 22 and a post-purification device 40; the first fan 82 is used for providing power for causing the gas to flow through the spray washing device 21, the biological deodorization device 30, the ultraviolet photolysis device 22 and the post-purification device 40 in sequence.
The spraying and washing device 21, the first fan 82, the biological deodorization device 30, the ultraviolet photolysis device 22 and the post-purification device 40 are connected in sequence; the bio-deodorizing means 30 comprises a bio-deodorizing tower 31.
The post-purification device 40 comprises an activated carbon adsorption tank 41 and high-energy ion equipment 42; activated carbon adsorption tank 41 is connected between high energy ion equipment 42 and ultraviolet photolysis equipment 22, and the waste gas of ultraviolet photolysis through ultraviolet photolysis equipment 22 enters activated carbon adsorption tank 41 earlier after the activated carbon adsorption, reentrants high energy ion equipment 42, and the waste gas molecule that gets into high energy ion equipment 42 is in the excited state under the electric field effect, makes the waste gas molecule decompose into harmless gas molecule to can realize the ultra-clean emission.
The biological deodorization device 30 further comprises a water supply main pipeline 32, a spraying water inlet pipeline 33 and a drug administration pipeline 70 which are connected with the biological deodorization tower 31; the spraying water inlet pipeline 33 and the administration pipeline 70 are respectively connected with the water supply main pipeline 32; the administration line 70 includes a spray inlet connection pipe 71, an administration pipe 72, and a medicine box 73 connected between the spray connection pipe and the administration pipe 72. In use, spray water flows through spray inlet connection tube 71 to medicine box 73 and mixes with the medicine provided by medicine box 73 to form a liquid medicine which flows from administration tube 72 to water supply main line 32, and spray water may flow through spray inlet line 33 to water supply main line 32, both of which may flow through the water supply main line to biological deodorization tower 31.
The water supply main pipeline 32 comprises a first branch 35 provided with an electric valve 34, a second branch 37 provided with an air volume regulating valve 36 and a main pipeline 39 provided with a flow meter 38; the first branch 35 and the second branch 37 are connected to a main path 39. The biological deodorization tower 31 is also connected with a drain pipe 81. And the waste water of the biological deodorization tower 31 can be discharged to the outside through the drain pipe 81.
In practical design, a second fan for providing power to guide the odor to the odor purifying unit 20 may be further provided in the reaction-precipitation-integrated biochemical tank 10.
The invention also discloses a treatment method of the sewage treatment and purification system, which comprises the following steps:
the sewage treatment step: sewage in the tank body 11 enters from the bottom end of the reaction sedimentation cavity 91 into the reaction sedimentation cavity 91 under the power provided by the aeration device 12 when dissolved oxygen is supplied, activated sludge in the tank body 11 enters from the bottom end of the reaction sedimentation cavity 91 along with the sewage under the power provided by the aeration device 12 when dissolved oxygen is supplied, sewage entering into the reaction sedimentation cavity 91 circularly moves under the power provided by the aeration device 12 when dissolved oxygen is supplied and is fully mixed with activated sludge and dissolved oxygen in the reactor 90 to decompose organic pollutants in the sewage, activated sludge in the reactor 90 settles towards the tank body 11 from the reaction sedimentation cavity 91 when dissolved oxygen is not supplied by the aeration device 12, liquid in the reactor 90 for removing the organic pollutants and the activated sludge is formed into supernatant and is discharged from the liquid discharge end 92 of the reactor 90, and the activated sludge is settled back into the tank body 11, then continuously enters the reactor 90 along with the sewage in the tank body 11 in the above mode to be mixed so as to purify the sewage;
sludge treatment: the sludge treatment unit 80 is used for dehydrating the sludge discharged from the reaction and precipitation integrated biochemical tank 10;
and (3) odor treatment: the odor discharged from the reaction-precipitation integrated biochemical tank 10 is purified by the odor purifying unit 20.
In the odor treatment step, the odor is firstly sprayed and washed by the spraying and washing equipment 21, then is biologically deodorized by the biological deodorization device 30, then is subjected to ultraviolet photolysis by the ultraviolet photolysis equipment 22, and finally flows to the post-purification device 40 for post-purification.
In the sludge treatment step, sludge discharged from the reaction and precipitation integrated biochemical tank 10 is firstly sent to a sludge concentration tank 87 for sludge concentration, the concentrated sludge is sent to a sludge storage tank 83 through a second conveying device 88 and is homogenized in the sludge storage tank 83, and after the sludge is homogenized, the sludge is sent to a dehydrator 89 through a third conveying device 99 and is dehydrated in the dehydrator 89, and after the dehydration is completed, the sludge is sent to a sludge storage bin 85 through a first conveying device 86.
The treatment method of the sewage treatment and purification system provided by the invention can improve the dehydration effect of sludge and can obviously improve the purification effect of sewage and odor.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (9)
1. A sewage treatment and purification system is characterized in that: comprises a reaction and precipitation integrated biochemical pool, a sludge treatment unit and an odor purification unit; the reaction and precipitation integrated biochemical pool is provided with an air outlet; the sludge treatment unit is used for dehydrating the sludge discharged by the reaction and precipitation integrated biochemical tank; the odor purification unit is connected with an air outlet of the reaction and precipitation integrated biochemical pool; the reaction and sedimentation integrated biochemical tank comprises a tank body, a top cover covered on the tank body, a reactor arranged in the upper end of the tank body and an aeration device; a reaction sedimentation cavity is formed in the reactor, and the upper end of the reactor is formed into a liquid discharge end for discharging supernatant; the bottom end of the reaction sedimentation cavity is communicated with the interior of the tank body; the aeration device is arranged at the bottom of the tank body and is used for providing power for promoting activated sludge and sewage in the tank body to enter the reaction sedimentation cavity when supplying dissolved oxygen and also used for providing power for promoting the sewage to circularly flow in the reaction sedimentation cavity.
2. The sewage treatment purification system of claim 1, wherein: the top cover comprises a supporting framework and a corrosion-resistant film; the corrosion-resistant film is used for covering the tank body and enclosing with the tank body to form an air chamber, the support framework is positioned outside the air chamber, and the corrosion-resistant film is connected to the support framework.
3. The sewage treatment purification system of claim 1, wherein: the sewage treatment and purification system also comprises an effluent weir, wherein the effluent weir is positioned in the upper end of the reactor.
4. The sewage treatment purification system of claim 1, wherein: the sludge treatment unit comprises a sludge dewatering device, a sludge bin and a first conveying device, wherein the first conveying device is used for receiving sludge from the sludge dewatering device and conveying the sludge to the sludge bin.
5. The wastewater treatment purification system of claim 4, wherein: the sludge dewatering device comprises a sludge concentration tank, a sludge storage tank, a second conveying device for conveying sludge from the sludge concentration tank to the sludge storage tank, a dewatering machine and a third conveying device for conveying sludge from the sludge storage tank to the dewatering machine.
6. The sewage treatment purification system of claim 1, wherein: the odor purification unit comprises a spraying washing device, a first fan, a biological deodorization device, an ultraviolet photolysis device and a post purification device; the first fan is used for providing power for promoting gas to flow through the spraying and washing equipment, the biological deodorization device, the ultraviolet photolysis equipment and the rear purification device in sequence.
7. The wastewater treatment purification system of claim 6, wherein: the spraying and washing equipment, the first fan, the biological deodorization device, the ultraviolet photolysis equipment and the rear purification device are sequentially connected; the biological deodorization device comprises a biological deodorization tower.
8. The method of treating a wastewater treatment purification system of claim 1, wherein: the method comprises the following steps:
the sewage treatment step: sewage in the tank body enters from the bottom end of the reaction sedimentation cavity to the reaction sedimentation cavity under the action of power provided by the aeration device when dissolved oxygen is supplied, activated sludge in the tank body enters from the bottom end of the reaction sedimentation cavity to the reaction sedimentation cavity along with the sewage under the action of power provided by the aeration device when dissolved oxygen is supplied, the sewage entering the reaction sedimentation cavity circularly moves under the action of power provided by the aeration device when dissolved oxygen is supplied and is fully mixed with the activated sludge and the dissolved oxygen in the reactor to decompose organic pollutants in the sewage, the activated sludge in the reactor settles towards the tank body from the reaction sedimentation cavity when the aeration device stops supplying the dissolved oxygen, liquid in the reactor for removing the organic pollutants and the activated sludge forms supernatant and is discharged from the liquid discharge end of the reactor, and when the activated sludge is settled and returns to the tank body, the activated sludge and the sewage in the tank body are continuously mixed in the reactor in the above mode to purify the sewage;
sludge treatment: dewatering the sludge discharged from the reaction and precipitation integrated biochemical tank by using a sludge treatment unit;
and (3) odor treatment: and purifying the odor discharged by the reaction and precipitation integrated biochemical pool by using an odor purification unit.
9. The method of claim 8, wherein the step of operating the wastewater treatment system comprises: the odor purification unit comprises a spraying washing device, a first fan, a biological deodorization device, an ultraviolet photolysis device and a post purification device; the first fan is used for providing power for promoting gas to sequentially flow through the spraying washing equipment, the biological deodorization device, the ultraviolet photolysis equipment and the rear purification device;
wherein, in the odor treatment step, the odor is firstly sprayed and washed by a spraying and washing device, then is biologically deodorized by a biological deodorization device, then is subjected to ultraviolet photolysis by an ultraviolet photolysis device, and finally flows to a post-purification device for post-purification.
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