CN112479476A - Advanced sewage treatment equipment - Google Patents
Advanced sewage treatment equipment Download PDFInfo
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- CN112479476A CN112479476A CN201910865230.7A CN201910865230A CN112479476A CN 112479476 A CN112479476 A CN 112479476A CN 201910865230 A CN201910865230 A CN 201910865230A CN 112479476 A CN112479476 A CN 112479476A
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- 239000010865 sewage Substances 0.000 title claims abstract description 71
- 238000006243 chemical reaction Methods 0.000 claims abstract description 154
- 238000004062 sedimentation Methods 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 27
- 239000010802 sludge Substances 0.000 claims abstract description 22
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 9
- 238000005273 aeration Methods 0.000 claims description 67
- 238000005192 partition Methods 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 17
- 239000001301 oxygen Substances 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- 238000009826 distribution Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- 238000004065 wastewater treatment Methods 0.000 claims description 7
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000004155 Chlorine dioxide Substances 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims description 3
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 3
- 206010021143 Hypoxia Diseases 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 239000003814 drug Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 5
- 244000005700 microbiome Species 0.000 description 4
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 241001148470 aerobic bacillus Species 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 238000006864 oxidative decomposition reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000006467 substitution reaction 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
- 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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses sewage advanced treatment equipment which comprises a shell, wherein a regulating tank, a reaction sedimentation tank, an anoxic-anaerobic reaction tank, an aerobic contact reaction tank, a secondary sedimentation tank, a disinfection tank, a sludge concentration tank and an equipment room are sequentially arranged in the shell along the horizontal direction; a wastewater inlet pipe and a first water outlet pipe are respectively arranged on two opposite side walls of the regulating tank; the bottom of the adjusting tank, the oxidation reaction tank, the biological reaction tank, the primary sedimentation tank, the facultative reaction chamber, the anoxic reaction chamber, the anaerobic reaction chamber, the aerobic contact reaction tank and the secondary sedimentation tank is provided with a sludge discharge port which is communicated with the sludge concentration tank through a sludge discharge pipeline. The device has the advantages of simple structure, low preparation cost, good advanced treatment effect on sewage and good effluent quality.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to sewage advanced treatment equipment.
Background
With the development of society, the pollution condition of water resources is also serious, and a sewage treatment technology suitable for the development of times is urgently needed and is recycled so as to relieve the shortage of water resources. Sewage treatment, which is a process for purifying sewage to meet the requirement of water quality for discharging the sewage into a certain water body or reusing the sewage, is generally divided into production sewage treatment and domestic sewage treatment, wherein the production sewage comprises industrial sewage, agricultural sewage, medical sewage and the like. The sewage treatment device is a device specially used for treating sewage, can carry out multistage grading treatment on sewage, enables the sewage to reach the discharge standard, can well reduce the pollution to the environment, and has a good use effect.
However, the existing sewage treatment methods can be divided into a traditional activated sludge method, a biological filter method, a biological contact oxidation method and the like, the sewage treatment process needs to be divided into different process stages, the sewage is sequentially processed in equipment corresponding to each process stage, the whole sewage treatment process is time-consuming and labor-consuming, the degradation effect on organic matters is poor, the process operation control is complex, and the effluent quality is not stable.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention aims to provide the sewage advanced treatment equipment which is simple in structure, low in preparation cost, good in advanced treatment effect on sewage and good in effluent quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides sewage advanced treatment equipment which comprises a shell, wherein a regulating tank, a reaction sedimentation tank, an anoxic-anaerobic reaction tank, an aerobic contact reaction tank, a secondary sedimentation tank, a disinfection tank, a sludge concentration tank and an equipment room are sequentially arranged in the shell along the horizontal direction; a wastewater inlet pipe and a first water outlet pipe are respectively arranged on two opposite side walls of the regulating tank;
the device comprises a reaction sedimentation tank, a chemical reaction tank, a biological reaction tank and a primary sedimentation tank, wherein the reaction sedimentation tank is internally divided into the oxidation reaction tank, the biological reaction tank and the primary sedimentation tank along the sewage flowing direction through two first partition plates, first overflow ports are formed in the upper parts of the two first partition plates, one end of a first water outlet pipe is communicated with the bottom of the oxidation reaction tank, the top of the oxidation reaction tank is communicated with a chemical liquid tank in an equipment room through a chemical feeding pipeline, a stirring device is arranged in the oxidation reaction tank, a plurality of pairs of upper fixing plates and lower fixing plates are fixedly arranged in the biological reaction tank, a plurality of biological carriers are arranged between the upper fixing plates and the lower fixing plates, an inclined pipe assembly is arranged in the middle of the primary sedimentation tank, and the bottoms of the oxidation reaction tank, the biological;
the upper part of the primary sedimentation tank is communicated with the lower part of the anoxic anaerobic reaction tank through a second water outlet pipe, the interior of the anoxic anaerobic reaction tank is divided into a facultative reaction chamber, an anoxic reaction chamber and an anaerobic reaction chamber through two second partition plates along the flowing direction of sewage, second overflow ports are formed in the upper parts of the two second partition plates, baffle plates are arranged in the anoxic reaction chamber and the anaerobic reaction chamber close to the second overflow ports, one end of each baffle plate is fixedly arranged at the top in the anoxic reaction chamber or the anaerobic reaction chamber, the other end of each baffle plate extends downwards to the bottom in the anoxic reaction chamber or the anaerobic reaction chamber, and the bottoms of the facultative reaction chamber, the anoxic reaction chamber and the anaerobic reaction chamber are of inverted trapezoid structures;
the middle part of the anoxic anaerobic reaction tank is communicated with the middle part of the aerobic contact reaction tank through a third water outlet pipe, one end of the third water outlet pipe extends into the aerobic contact reaction tank, a water distribution triangular cone is arranged at one end, located in the aerobic contact reaction tank, of the third water outlet pipe, an aeration regulation and control system is arranged below the water distribution triangular cone, and suspended fillers are arranged above the water distribution triangular cone;
the aerobic contact reaction tank is communicated with the secondary sedimentation tank through a fourth water outlet pipe, and the secondary sedimentation tank is communicated with the disinfection tank through a fifth water outlet pipe;
the bottom of equalizing basin, oxidation reaction tank, biological reaction tank, elementary sedimentation tank, facultative reaction room, oxygen deficiency reaction chamber and anaerobism reaction chamber, good oxygen contact reaction tank and second grade sedimentation tank all is provided with the mud discharging mouth, the mud discharging mouth is linked together through row mud pipeline and sludge concentration tank.
In a further improvement, the aeration regulation and control system comprises a blower, an air supply pipe, a longitudinal aeration pipe, a transverse aeration pipe and aeration branch pipes, wherein the blower is positioned in the equipment room, and the blower is communicated with a longitudinal aeration pipe positioned at one side in the aerobic contact reaction tank through an air feed pipe, a plurality of transverse aeration pipes are vertically communicated with the longitudinal aeration pipe from top to bottom, one end of each transverse aeration pipe is fixedly connected with the inner side wall of the aerobic contact reaction tank, a plurality of interfaces which are arranged in pairs are uniformly arranged on the plurality of transverse aeration pipes, the branch ports are all provided with horizontally arranged aeration branch pipes which are all arranged in parallel, and the aeration branch pipe is perpendicular to the transverse aeration pipe, a plurality of aeration holes which are arranged in pairs are uniformly formed in the upper part of the aeration branch pipe, and the included angle formed by the aeration holes and the central axis of the aeration branch pipe is 90 degrees. Through setting up aeration system, produce a large amount of micro bubbles in good oxygen contact reaction pond through the aeration hole, satisfy sufficient aeration rate, and then satisfy the demand of good oxygen fungus, improve sewage treatment plant's sewage treatment ability.
The further improvement is that a dissolved oxygen measuring instrument is arranged at the middle upper part in the aerobic contact reaction tank. The dissolved oxygen in the aerobic contact reaction tank is detected in real time by the dissolved oxygen measuring instrument, and the dissolved oxygen in the water in the aerobic contact reaction tank is ensured to be more than 2mg/L by regulating and controlling the work of the air blower, so that the growth and reproduction requirements of aerobic bacteria are further ensured, and the sewage treatment device is ensured to be in a higher sewage treatment level.
The improved structure is characterized in that a baffle is arranged in the primary sedimentation tank close to the first overflow port, one end of the baffle is fixedly arranged at the top of the primary sedimentation tank, the other end of the baffle is provided with a 45-degree corner, and a sewage channel for sewage to flow into the primary sedimentation tank is formed between the baffle and a first partition plate positioned between the primary sedimentation tank and the biological reaction tank. Through setting up the baffle, when avoiding waste water to intake primary sedimentation tank, produce stronger impulsive force effect, cause the disturbance to the sedimentation process, play the effect of buffering rivers and uniform water distribution.
In a further improvement, the bottom of the baffle is 20-30cm below the first overflow port on the first partition plate.
The further improvement is that the bottom of the secondary sedimentation tank is provided with a sludge return pipe communicated with the aerobic contact reaction tank. And a part of microorganisms in the sludge deposited at the bottom of the secondary sedimentation tank can be returned to the aerobic contact reaction tank through the sludge return pipe, so that the utilization rate of the microorganisms is improved.
In a further improvement, the disinfection tank is connected with a chlorine dioxide generator positioned between the devices through a disinfection liquid pipe.
Compared with the prior art, the invention has the following beneficial effects:
the invention pre-adjusts the water quality and the water quantity of the entered sewage by arranging the adjusting tank; the regulated sewage enters an oxidation reaction tank, liquid medicines such as polyaluminium chloride, acid liquor, alkali liquor and the like are added into the oxidation reaction tank through a liquid medicine box, stirring is carried out by using a stirring device, pollutants in the sewage are oxidized and decomposed, the sewage after oxidative decomposition treatment enters a biological reaction tank and is fully contacted and decomposed with organic matters in a reverse tank, the sewage after biological treatment enters a primary sedimentation tank and is subjected to sedimentation treatment under the action of self gravity, and the treatment pressure of subsequent equipment is reduced; then the sewage enters an anoxic anaerobic reaction tank in sequence, organic matters in the wastewater are hydrolyzed into organic acid by facultative bacteria of the facultative reaction chamber, anaerobic bacteria of the anoxic reaction chamber and anaerobic bacteria of the anaerobic reaction chamber, so that macromolecular organic matters are decomposed into micromolecular organic matters, and insoluble organic matters are converted into soluble organic matters; the sewage after the anaerobic treatment enters an aerobic contact reaction tank for further biochemical oxidation to decompose organic matters, and the aeration regulation and control system is arranged to ensure that oxygen is distributed more uniformly in the aerobic contact reaction tank and improve the treatment effect of equipment on the sewage; the water after the aerobic treatment enters the disinfection tank for disinfection through the secondary sedimentation effect of the secondary sedimentation tank, and can be recycled or directly discharged outside. The invention has the advantages of stable equipment operation, lower energy consumption, better depth effect on sewage treatment, good effluent quality, realization of sewage reclamation, comprehensive utilization of sewage, less capital investment, compact equipment and small occupied area.
Drawings
The invention is described in further detail below with reference to specific embodiments and with reference to the following drawings.
FIG. 1 is a block diagram showing the construction of an apparatus for advanced wastewater treatment according to the present invention;
FIG. 2 is a view showing the internal structure of a reaction sedimentation tank according to the present invention;
FIG. 3 is a view showing the internal structure of an anoxic anaerobic reaction tank according to the present invention;
FIG. 4 is a view showing the internal structure of an aerobic contact reaction tank in the present invention;
FIG. 5 is a structural view of the present invention in a state where the lateral aeration pipe and the aeration branch pipe are connected;
FIG. 6 is a cross-sectional view of an aeration nozzle according to the present invention;
wherein the specific reference numerals are as follows: a regulating tank 1, a first water outlet pipe 11, a reaction sedimentation tank 2, a first partition plate 21, a first overflow port 22, an oxidation reaction tank 23, a dosing pipeline 24, a stirring device 25, a biological reaction tank 26, an upper fixing plate 27, a lower fixing plate 28, a biological carrier 29, a primary sedimentation tank 210, a baffle 211, an inclined pipe assembly 212, a second water outlet pipe 213, a liquid medicine tank 214, an anoxic anaerobic reaction tank 3, a second partition plate 31, a second overflow port 32, a facultative reaction chamber 33, an anoxic reaction chamber 34, an anaerobic reaction chamber 35, a baffle plate 36, a third water outlet pipe 37, an aerobic contact reaction tank 4, a water distribution triangular cone 41, a suspended filler 42, an air feed pipe 43, a longitudinal aeration pipe 44, a transverse aeration pipe 45, an aeration branch pipe 46, an aeration hole 47, a dissolved oxygen measuring instrument 48, a fourth water outlet pipe 49, a secondary sedimentation tank 5, a disinfection tank 6, a generator 61 and a sludge concentration tank 7, a sludge discharge line 71.
Detailed Description
The embodiment of the invention discloses a sewage advanced treatment device, which comprises a shell, wherein a regulating tank 1, a reaction sedimentation tank 2, an anoxic anaerobic reaction tank 3, an aerobic contact reaction tank 4, a secondary sedimentation tank 5, a disinfection tank 6, a sludge concentration tank 7 and a device room are sequentially arranged in the shell along the horizontal direction; a wastewater inlet pipe and a first water outlet pipe 11 are respectively arranged on two opposite side walls of the adjusting tank 1. As shown in fig. 2, the interior of the reaction sedimentation tank 2 is divided into an oxidation reaction tank 23, a biological reaction tank 26 and a primary sedimentation tank 210 by two first partition boards 21 along the sewage flow direction, the upper parts of the two first partition boards 21 are both provided with first overflow ports 22, one end of a first water outlet pipe 11 is communicated with the bottom of the oxidation reaction tank 23, the top of the oxidation reaction tank 23 is communicated with a liquid medicine tank 214 in an equipment room through a medicine adding pipeline 24, a stirring device 25 is arranged in the oxidation reaction tank 23, a plurality of pairs of upper fixing plates 27 and lower fixing plates 28 are fixedly arranged in the biological reaction tank 26, a plurality of biological carriers 29 are arranged between the upper fixing plates 27 and the lower fixing plates 28, the middle part of the primary sedimentation tank 210 is provided with an inclined pipe assembly 212, and the bottoms of the oxidation reaction tank 23, the biological reaction tank 26 and the primary sedimentation tank 210. Wherein, be close to in the primary sedimentation tank 210 and be provided with baffle 211 in first overflow mouth 22 department, the fixed top that sets up in primary sedimentation tank 210 of baffle 211 one end, the baffle 211 other end is provided with 45 degrees corners, baffle 211 and be located and form the sewage passageway that is used for sewage inflow primary sedimentation tank 210 between the first division board 21 between primary sedimentation tank 210 and the biological reaction pond 26, through setting up baffle 211, when avoiding waste water intake primary sedimentation tank 210, produce stronger impulsive force effect, cause the disturbance to the settlement process, play the effect of buffering rivers and even water distribution. Wherein, the bottom of the baffle 211 is 20-30cm below the first overflow port 22 on the first partition plate 21.
As shown in fig. 3, the upper part of the primary sedimentation tank 210 is communicated with the lower part of the anoxic anaerobic reaction tank 3 through a second water outlet pipe 213, the interior of the anoxic anaerobic reaction tank 3 is divided into a facultative reaction chamber 33, an anoxic reaction chamber 34 and an anaerobic reaction chamber 35 along the sewage flow direction by two second partition plates 31, the upper parts of the two second partition plates 31 are respectively provided with a second overflow port 32, baffle plates 36 are respectively arranged in the anoxic reaction chamber 34 and the anaerobic reaction chamber 35 close to the second overflow port 32, one end of each baffle plate 36 is fixedly arranged at the top part of the anoxic reaction chamber 34 or the anaerobic reaction chamber 35, the other end of each baffle plate 36 extends downwards to the bottom part of the anoxic reaction chamber 34 or the anaerobic reaction chamber 35 close to the anoxic reaction chamber 33, the anoxic reaction chamber 34 and the anaerobic reaction chamber 35, and the bottoms of the facultative reaction chamber 33.
As shown in fig. 4 to 6, the middle of the anoxic-anaerobic reaction tank 3 is communicated with the middle of the aerobic contact reaction tank 4 through a third water outlet pipe 37, one end of the third water outlet pipe 37 extends into the aerobic contact reaction tank 4, a water distribution triangular cone 41 is arranged at one end of the third water outlet pipe 37 positioned in the aerobic contact reaction tank 4, an aeration regulation and control system is arranged below the water distribution triangular cone 41, and a suspended filler 42 is arranged above the water distribution triangular cone 41. The aeration regulation and control system comprises a blower, an air supply pipe 43, a longitudinal aeration pipe 44, a transverse aeration pipe 45 and an aeration branch pipe 46, wherein the blower is positioned in the equipment room, and the air blower is communicated with a longitudinal aeration pipe 44 positioned at one side in the aerobic contact reaction tank 4 through an air feed pipe 43, the longitudinal aeration pipe 44 is vertically communicated with a plurality of transverse aeration pipes 45 from top to bottom, one end of each transverse aeration pipe 45 is fixedly connected to the inner side wall of the aerobic contact reaction tank 4, a plurality of branch ports which are arranged in pairs are uniformly arranged on the plurality of transverse aeration pipes 45, the branch ports are respectively provided with a horizontally arranged aeration branch pipe 46, the plurality of aeration branch pipes 46 are respectively arranged in parallel, and aeration branch pipe 46 is mutually perpendicular with horizontal aeration pipe 45, and aeration hole 47 that a plurality of pairs set up are evenly seted up to aeration branch pipe 46 upper portion, and the contained angle that two aeration holes 47 that set up in pairs and aeration branch pipe 46 the central axis formed is 90 degrees. Through setting up aeration system, produce a large amount of micro bubbles in aerobic contact reaction tank 4 through aeration hole 47, satisfy sufficient aeration rate, and then satisfy the demand of good oxygen fungus, improve sewage treatment plant's sewage treatment ability. The dissolved oxygen measuring instrument 48 is installed at the middle upper part in the aerobic contact reaction tank 4, the dissolved oxygen amount in the aerobic contact reaction tank 4 is detected in real time through the dissolved oxygen measuring instrument 48, the work of the air blower can be regulated and controlled to ensure that the dissolved oxygen in the water in the aerobic contact reaction tank 4 is more than 2mg/L, the growth and propagation requirements of aerobic bacteria are further ensured, and the sewage treatment device is ensured to be at a higher sewage treatment level.
The aerobic contact reaction tank 4 is communicated with the secondary sedimentation tank 5 through a fourth water outlet pipe 49, and the secondary sedimentation tank 5 is communicated with the disinfection tank 6 through a fifth water outlet pipe; the disinfection tank 6 is connected with a chlorine dioxide generator 61 positioned between the devices through a disinfection liquid pipe. The bottom parts of the regulating tank 1, the oxidation reaction tank 23, the biological reaction tank 26, the primary sedimentation tank 210, the facultative reaction chamber 33, the anoxic reaction chamber 34, the anaerobic reaction chamber 35, the aerobic contact reaction tank 4 and the secondary sedimentation tank 5 are all provided with sludge discharge ports which are communicated with the sludge concentration tank 7 through a sludge discharge pipeline 71; the bottom of the secondary sedimentation tank 5 is provided with a sludge return pipe communicated with the aerobic contact reaction tank 4, and a part of microorganisms in the sludge deposited at the bottom of the secondary sedimentation tank 5 can be returned to the aerobic contact reaction tank 4 through the sludge return pipe, so that the utilization rate of the microorganisms is improved.
In the invention, the quality and quantity of the entered sewage are pre-regulated by arranging a regulating tank 1; the regulated sewage enters an oxidation reaction tank 23, liquid medicines such as polyaluminium chloride, acid liquor, alkali liquor and the like are added into the oxidation reaction tank through a liquid medicine box 214, the stirring is carried out by using a stirring device 25, pollutants in the sewage are oxidized and decomposed, the sewage after the oxidative decomposition treatment enters a biological reaction tank 26 and is fully contacted and decomposed with organic matters in a reaction tank, the sewage after the biological treatment enters a primary sedimentation tank 210 and is subjected to sedimentation treatment under the action of self gravity, and the treatment pressure of subsequent equipment is reduced; then the sewage enters an anoxic anaerobic reaction tank 3 in sequence, organic matters in the sewage are hydrolyzed into organic acid by facultative bacteria in the facultative reaction chamber 33, anaerobic bacteria in the anoxic reaction chamber 34 and anaerobic bacteria in the anaerobic reaction chamber 35, so that macromolecular organic matters are decomposed into micromolecular organic matters, and insoluble organic matters are converted into soluble organic matters; the sewage after the anaerobic treatment enters the aerobic contact reaction tank 4 for further biochemical oxidation to decompose organic matters, and the aeration regulation and control system is arranged to ensure that oxygen is distributed more uniformly in the aerobic contact reaction tank 4 and improve the sewage treatment effect of the equipment; the water after the aerobic treatment enters the disinfection tank 6 for disinfection through the secondary sedimentation effect of the secondary sedimentation tank 5, and can be recycled or directly discharged.
The invention has the advantages of stable equipment operation, lower energy consumption, better depth effect on sewage treatment, good effluent quality, realization of sewage reclamation, comprehensive utilization of sewage, less capital investment, compact equipment and small occupied area.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (7)
1. The sewage advanced treatment equipment is characterized by comprising a shell, wherein a regulating tank, a reaction sedimentation tank, an anoxic-anaerobic reaction tank, an aerobic contact reaction tank, a secondary sedimentation tank, a disinfection tank, a sludge concentration tank and an equipment room are sequentially arranged in the shell along the horizontal direction; a wastewater inlet pipe and a first water outlet pipe are respectively arranged on two opposite side walls of the regulating tank;
the device comprises a reaction sedimentation tank, a chemical reaction tank, a biological reaction tank and a primary sedimentation tank, wherein the reaction sedimentation tank is internally divided into the oxidation reaction tank, the biological reaction tank and the primary sedimentation tank along the sewage flowing direction through two first partition plates, first overflow ports are formed in the upper parts of the two first partition plates, one end of a first water outlet pipe is communicated with the bottom of the oxidation reaction tank, the top of the oxidation reaction tank is communicated with a chemical liquid tank in an equipment room through a chemical feeding pipeline, a stirring device is arranged in the oxidation reaction tank, a plurality of pairs of upper fixing plates and lower fixing plates are fixedly arranged in the biological reaction tank, a plurality of biological carriers are arranged between the upper fixing plates and the lower fixing plates, an inclined pipe assembly is arranged in the middle of the primary sedimentation tank, and the bottoms of the oxidation reaction tank, the biological;
the upper part of the primary sedimentation tank is communicated with the lower part of the anoxic anaerobic reaction tank through a second water outlet pipe, the interior of the anoxic anaerobic reaction tank is divided into a facultative reaction chamber, an anoxic reaction chamber and an anaerobic reaction chamber through two second partition plates along the flowing direction of sewage, second overflow ports are formed in the upper parts of the two second partition plates, baffle plates are arranged in the anoxic reaction chamber and the anaerobic reaction chamber close to the second overflow ports, one end of each baffle plate is fixedly arranged at the top in the anoxic reaction chamber or the anaerobic reaction chamber, the other end of each baffle plate extends downwards to the bottom in the anoxic reaction chamber or the anaerobic reaction chamber, and the bottoms of the facultative reaction chamber, the anoxic reaction chamber and the anaerobic reaction chamber are of inverted trapezoid structures;
the middle part of the anoxic anaerobic reaction tank is communicated with the middle part of the aerobic contact reaction tank through a third water outlet pipe, one end of the third water outlet pipe extends into the aerobic contact reaction tank, a water distribution triangular cone is arranged at one end, located in the aerobic contact reaction tank, of the third water outlet pipe, an aeration regulation and control system is arranged below the water distribution triangular cone, and suspended fillers are arranged above the water distribution triangular cone;
the aerobic contact reaction tank is communicated with the secondary sedimentation tank through a fourth water outlet pipe, and the secondary sedimentation tank is communicated with the disinfection tank through a fifth water outlet pipe;
the bottom of equalizing basin, oxidation reaction tank, biological reaction tank, elementary sedimentation tank, facultative reaction room, oxygen deficiency reaction chamber and anaerobism reaction chamber, good oxygen contact reaction tank and second grade sedimentation tank all is provided with the mud discharging mouth, the mud discharging mouth is linked together through row mud pipeline and sludge concentration tank.
2. The advanced wastewater treatment equipment according to claim 1, wherein the aeration control system comprises an air blower, an air supply pipe, a longitudinal aeration pipe, a transverse aeration pipe and aeration branch pipes, the air blower is positioned in the equipment room, the air blower is communicated with the longitudinal aeration pipe positioned at one side in the aerobic contact reaction tank through the air supply pipe, the longitudinal aeration pipe is vertically communicated with a plurality of transverse aeration pipes from top to bottom, one end of each transverse aeration pipe is fixedly connected to the inner side wall of the aerobic contact reaction tank, a plurality of branch ports which are arranged in pairs are uniformly formed on the transverse aeration pipes, the branch ports are respectively provided with the aeration branch pipes which are horizontally arranged, the aeration branch pipes are respectively arranged in parallel and are vertical to the transverse aeration pipes, a plurality of aeration holes which are arranged in pairs are uniformly formed on the upper parts of the aeration branch pipes, the included angle formed by the two aeration holes arranged in pairs and the central axis of the aeration branch pipe is 90 degrees.
3. The advanced wastewater treatment equipment according to claim 2, wherein a dissolved oxygen meter is installed at the middle upper part in the aerobic contact reaction tank.
4. The advanced wastewater treatment equipment according to claim 1, wherein a baffle is arranged in the primary sedimentation tank near the first overflow port, one end of the baffle is fixedly arranged at the top of the primary sedimentation tank, the other end of the baffle is provided with a 45-degree corner, and a wastewater channel for wastewater to flow into the primary sedimentation tank is formed between the baffle and the first partition plate between the primary sedimentation tank and the biological reaction tank.
5. The advanced wastewater treatment apparatus according to claim 4, wherein the bottom of the baffle is 20-30cm below the first overflow port on the first partition plate.
6. The advanced wastewater treatment equipment according to claim 1, wherein a sludge return pipe communicated with the aerobic contact reaction tank is arranged at the bottom of the secondary sedimentation tank.
7. The advanced wastewater treatment facility of claim 1, wherein the disinfection tank is connected to a chlorine dioxide generator located between the facilities by a disinfection fluid line.
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