CN110803765A - Anaerobic reactor for treating high-concentration organic wastewater - Google Patents
Anaerobic reactor for treating high-concentration organic wastewater Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 239000010802 sludge Substances 0.000 claims abstract description 73
- 238000000926 separation method Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 89
- 238000005338 heat storage Methods 0.000 claims description 32
- 239000010865 sewage Substances 0.000 claims description 29
- 238000010992 reflux Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 230000015556 catabolic process Effects 0.000 claims description 5
- 238000006731 degradation reaction Methods 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 34
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract description 3
- 230000009615 deamination Effects 0.000 abstract description 2
- 238000006481 deamination reaction Methods 0.000 abstract description 2
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 238000011081 inoculation Methods 0.000 abstract description 2
- 230000001988 toxicity Effects 0.000 abstract description 2
- 231100000419 toxicity Toxicity 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 19
- 230000009471 action Effects 0.000 description 7
- 244000005700 microbiome Species 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000009466 transformation Effects 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
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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
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/2893—Particular arrangements for anaerobic reactors with biogas recycling
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/10—Temperature conditions for biological treatment
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Treatment Of Sludge (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
An anaerobic reactor for treating high-concentration organic wastewater is based on the basic principles of an upflow anaerobic sludge bed reactor, gas stripping, desulfurization and deamination and the like, and realizes the separation of SRT and HRT by a three-phase separator to obtain higher sludge concentration; through the tower-shaped rotational flow water distribution structure, a large amount of methane and disturbance of internal and external circulating water flow fully contact with mud water, and the sludge is rapidly granulated; improves the capabilities of resisting suspended matters, load impact, salt and toxicity of the reactor, reduces the inoculation cost of granular sludge, shortens the acclimation period of the sludge, obtains good mass and heat transfer effects and high volume load, and can reach 5-30kgCOD/m3d, the operation is stable and reliable, the treatment efficiency is high, and the investment is saved; the height-diameter ratio is large and can reach 3-6, the occupied area is smaller than that of the UASB anaerobic reactor, and the capital investment cost is low. The self-utilization of the biogas realizes the self-heating balance of the system, ensures the medium temperature environment (35-38 ℃) in the tank, and has low operating cost.
Description
Technical Field
The invention relates to the technical field of environment-friendly wastewater treatment, in particular to an anaerobic reactor for treating high-concentration organic wastewater.
Background
The treatment of high-concentration organic wastewater is a difficult problem in the field of sewage treatment, the most widely applied and economical method for sewage treatment is a biological treatment method, which is subjected to the leather-following and transformation of the last hundred years and is the most key technology for controlling environmental pollution at present. The anaerobic biological treatment technology is one of the wastewater biological treatment technologies, particularly for high-concentration organic wastewater treatment, has incomparable advantages compared with the aerobic biological treatment technology, and is a hotspot of research in the field of high-concentration organic wastewater treatment. The efficiency and the speed of anaerobic biological treatment are improved, and besides a good growth environment is provided for anaerobic microorganisms, the maintenance of the sludge concentration and the good mass and heat transfer effect of the anaerobic reactor is also very critical. The search for anaerobic reactors with higher treatment efficiency and lower operating costs is a continuing goal.
Disclosure of Invention
The invention uses the technical advantages of the traditional anaerobic reactors such as UASB, EGSB, IC and the like for reference, and solves the problems of poor suspended matter resistance and load impact resistance, weak salt and toxicity resistance, high inoculation cost of granular sludge, long sludge acclimation period and the like when the traditional anaerobic reactor is used for treating high-concentration organic wastewater based on the basic principles of an upflow anaerobic sludge bed reactor, gas stripping desulfurization deamination and the like, ensures uniform and constant mass and heat transfer in the reactor, improves the efficiency and stability of the reactor, and provides the anaerobic bioreactor suitable for treating high organic matter concentration and high salt content.
Technical scheme
An anaerobic reactor for the treatment of high concentration organic wastewater comprising: the device comprises a tank body, a sludge tower, a three-phase separator, a gas-liquid separator, a water outlet weir, a water outlet distributor, a heat storage device, an external circulating pump, a gas-liquid mixer, a reflux collector, an internal circulating pump, a water inlet pipe, a water outlet pipe, a biogas pipe, a liquid lifting pipe, a downcomer, an external circulating pipe, a hydrothermal liquid outlet pipe, an air inlet pipe, an internal circulating pipe and a sludge discharge outlet. The jar body by: the top of the tank, the cylinder and the tank bottom. The sludge tower is of a tower-shaped structure and comprises a tower body, a water inlet distributor and an external circulation distributor. The three-phase separator is composed of a separation screen panel and an air collection chamber. The method is characterized in that:
the heat storage device is arranged outside the anaerobic tank body, the biogas generated by sewage degradation is used for heating the external circulating water, and the heat is brought into the anaerobic reactor through the external circulating water, so that the medium-temperature environment in the tank is ensured; an air inlet, a liquid inlet and an outlet are arranged on the device.
The sludge discharge outlet is provided with a sludge discharge gate valve which can be opened and closed.
The sludge tower is arranged on the tank bottom in the tank body. The inner space of the tower body is divided into an upper space and a lower space by a clapboard. The water inlet distributor is arranged on the upper part of the inner partition plate of the tower body and communicates the space at the upper part in the tower body with the space outside the tower body. The outer circulation distributor is arranged at the lower part of the inner partition plate of the tower body and communicates the lower space in the tower body with the outer space of the tower body.
The three-phase separator is arranged at the upper part in the tank body, the gas collection cavity of the three-phase separator is arranged at the upper part of the separation screen plate, and the lower port of the gas collection cavity is connected with a hole set at the upper end of the separation screen plate.
One end of the water inlet pipe penetrates through a hole set in the lower portion of the barrel, the outer pipe wall of the water inlet pipe is connected with the hole set in the lower portion of the barrel in a sealing mode, and the water inlet pipe penetrates through the tower body to enter the space in the upper portion of the sludge tower.
The backflow collector is arranged in the tank body and positioned below the three-phase separator. One end of the internal circulation pipe penetrates through a hole set at the upper part of the cylinder body and is connected with the lower port of the backflow collector, and the outer pipe wall of the internal circulation pipe is hermetically connected with the hole set at the upper part of the cylinder body. The other end of the internal circulation pipe is connected with an inlet of an internal circulation pump arranged outside the tank body. The outlet of the internal circulation pump is communicated with the lower part inside the tank body through a pipeline, and the outer wall of the pipeline is hermetically connected with a hole arranged on the cylinder body.
The left port of the sludge discharge outlet penetrates through a hole set in the lower part of the cylinder body and is communicated with the inside of the cylinder body, and the outer wall of the pipe is connected with the set hole in a sealing manner. The height of the sludge discharge outlet is equal to the height of the connecting pipe orifice of the internal circulating pump and the cylinder body.
The gas-liquid separator passes through a hole set on the filling top and enters a part of the tank body, and the outer wall of the gas-liquid separator is hermetically connected with the hole set on the filling top. One end of a liquid lifting pipe arranged in the tank body is communicated with the interior of the gas-liquid separator through a hole arranged at the lower part of the gas-liquid separator, and the outer wall of the liquid lifting pipe is hermetically connected with the hole arranged at the lower part of the gas-liquid separator. The other end of the liquid lifting pipe is connected with the upper port of the gas collection cavity.
One end of the methane pipe is connected with a hole set at the top end of the gas-liquid separator and is communicated with the interior of the gas-liquid separator, and the other end of the methane pipe is a part of methane discharge end.
The water outlet weir is arranged in the tank body and positioned above the three-phase separator. The hole pipeline on the side surface of the water outlet weir is connected with a hole arranged on the right side of the water outlet distributor, the pipeline penetrates through the hole arranged on the cylinder body, and the outer wall of the pipeline is hermetically connected with the hole. The hole on the left side of the water outlet distributor is connected with a water outlet pipe which is a hole connected to another functional unit device. The water outlet distributor is arranged outside the tank body.
One end port of the air inlet pipe is communicated with a hole arranged in the middle of the biogas pipe, and the other end of the air inlet pipe is connected with an air inlet hole of the heat storage device. One end of the external circulation pipe is connected with the lower end hole of the water outlet distributor, and the other end of the external circulation pipe is connected with the water inlet hole of the heat storage device. One end of the hydrothermal solution outlet pipe is connected with a water outlet hole of the heat storage device, and the other end of the hydrothermal solution outlet pipe is connected with a water inlet hole of the external circulating pump. The water outlet of the external circulating pump is connected with the water inlet of the gas-liquid mixer, the water outlet of the gas-liquid mixer is communicated with the inner space at the lower part of the sludge tower through a pipeline passing through a hole set at the lower part of the cylinder, and the outer wall of the pipeline is hermetically connected with the holes set by the cylinder and the tower body.
The hole set in the middle of the air inlet pipe is connected with the air inlet of the gas-liquid mixer through a pipeline.
The upper port of the downcomer penetrates through the three-phase separator to be connected with the lower port of the gas-liquid separator, and the lower port of the downcomer is close to the upper end of the sludge tower.
The heat storage device mainly comprises: a flame arrester, a liquid burner, a buffer tank and a control box.
The outlet of the flame arrester is connected with the gas inlet pipeline of the submerged burner, the outlet pipeline of the submerged burner is connected with the inlet of the buffer tank, and the control box is a device for controlling the buffer tank and the submerged burner; the inlet of the flame arrester is an air inlet of the heat storage device, the inlet of the in-liquid combustor is a liquid inlet of the heat storage device, and the outlet of the buffer tank is an outlet of the heat storage device.
The upper part of the tower body on the sludge tower is of a conical structure, and the conical top angle of the tower body is 120-165 degrees.
The inner circulating pump, the outer circulating pump, the reflux collector, the control box, the gas-liquid mixer, the flame arrester, the liquid-medium combustor, the water outlet distributor and the gas-liquid mixer are commercially available products.
And after the mixed liquid enters the three-phase separator, gas, water and mud are separated under the blocking action of the screen plate, bubbles quickly rise and enter the gas collecting cavity, and mud and water enter the settling zone. Because the lifting action of the bubbles is eliminated, the speed of the liquid flow is gradually reduced in the lifting process, so that the sludge is settled.
The water outlet weir is a component for controlling the height of the water level, when the water level is at the set height, the water overflows, and the side surface of the water outlet weir is provided with a hole for discharging collected sewage through a pipeline.
The water outlet distributor is a component with two inlets and two outlets, and the flow of the two outlets is adjusted by controlling an adjusting piece outside the water outlet distributor.
The gas-liquid separator mainly comprises a separator body, a liquid inlet, a liquid outlet and a gas outlet. The liquid inlet is tangent to the device body and is connected with the liquid lifting pipe, the liquid outlet is communicated with the downcomer, and the gas outlet is communicated with the biogas pipe.
The reflux collector is in an inverted cone horn mouth shape, and an opening at the cone top is communicated with the inner circulating pipe.
The outer circulation distributor is cone-shaped, the conical surface is provided with more than 2 water distribution openings, and the opening direction is tangential to the conical surface.
The liquid burner is a device for directly heating liquid by spraying high-temperature combustion gas into the liquid. When the heated liquid is water, it is also called a combustion device in water.
And the buffer tank is used for maintaining the stable operation of the external circulating pump after the gas-water mixed liquid enters the buffer tank.
The gas-liquid mixer is used for absorbing partial marsh gas from the liquid separated and settled primarily, and aims to increase the amount of gas entering the tank bottom and improve the stirring capacity of sewage.
The invention has the advantages that: the invention realizes the separation of SRT and HRT by a three-phase separator to obtain higher sludge concentration; through the violent disturbance of a large amount of marsh gas and internal circulation, the muddy water is fully contacted, the sludge is quickly granulated, a good mass and heat transfer effect and a high volume load are obtained, and the volume load can reach 5-30kgCOD/m3And d, the operation is stable and reliable, the treatment efficiency is high, and the investment is saved. And the height-diameter ratio>The UASB height-diameter ratio can reach 3-6, the floor area is far less than that of the UASB anaerobic reactor, and the capital investment cost is low. In addition, the biogas can be utilized by itself, the self-heating balance of the system is realized, the medium temperature environment (35-38 ℃) in the tank is ensured, and the operating cost is low.
Drawings
FIG. 1 is an assembly schematic of an anaerobic reactor for high concentration organic wastewater treatment;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a sectional view B-B of fig. 1.
Detailed Description
Example 1
An anaerobic reactor for the treatment of high concentration organic wastewater comprising: the system comprises a tank body 1, a sludge tower 2, a three-phase separator 3, a gas-liquid separator 4, a water outlet weir 5, a water outlet distributor 6, a heat storage device 7, an external circulating pump 8, a gas-liquid mixer 9, a reflux collector 10, an internal circulating pump 11, a water inlet pipe 12, a water outlet pipe 13, a biogas pipe 14, a liquid lifting pipe 23, a downcomer 24, an external circulating pipe 25, a hydrothermal liquid outlet pipe 26, a gas inlet pipe 27, an internal circulating pipe 32 and a sludge discharge outlet 33; the jar body 1 comprises: a top irrigation 15, a cylinder 16 and a tank bottom 17; the sludge tower 2 is a tower-shaped structure and consists of a tower body 18, a water inlet distributor 19 and an external circulation distributor 20; the three-phase separator 3 is constituted by a separation screen panel 21 and a gas collection chamber 22; the method is characterized in that:
the heat storage device 7 is arranged outside the anaerobic tank body, the biogas generated by sewage degradation is used for heating the external circulating water, and the heat is brought into the anaerobic reactor through the external circulating water, so that the medium-temperature environment in the tank body is ensured; an air inlet, a liquid inlet and an outlet are arranged on the device;
the sludge discharge outlet 33 is provided with a sludge discharge gate valve which can be opened and closed; when the sludge particles in the tank body 1 reach a set amount, opening a sludge discharge gate valve to discharge the sludge in the tank body 1 out of the tank body 1;
the sludge tower 2 is arranged on the tank bottom 17 in the tank body 1; the inner space of the tower body 18 is divided into an upper space and a lower space by a partition plate; the water inlet distributor 19 is arranged at the upper part of an inner partition plate of the tower body 18, and the water inlet distributor 19 communicates the upper space in the tower body 18 with the space outside the tower body 18; the outer circulation distributor 20 is arranged at the lower part of the inner partition plate in the tower body 18, and the inner lower space of the tower body 18 is communicated with the outer space of the tower body 18 by the outer circulation distributor 20; the sludge tower 2 is divided into an upper space and a lower space, and the purpose is to ensure that the entering wastewater is not directly mixed with the sewage returned by the gas-liquid mixer 9, but the entering wastewater and the sewage are mixed in the tank body 1, so that the two spaces are fully mixed;
the three-phase separator 3 is arranged at the upper part in the tank body 1, the gas collection cavity 22 of the three-phase separator 3 is arranged at the upper part of the separation screen plate 21, and the lower port of the gas collection cavity 22 is connected with a hole set at the upper end of the separation screen plate 21;
one end of the water inlet pipe 12 penetrates through a hole arranged at the lower part of the cylinder 16, the outer pipe wall of the water inlet pipe 12 is hermetically connected with the hole arranged at the lower part of the cylinder 16, and the water inlet pipe 12 penetrates through the tower body 18 to enter the space at the upper part of the sludge tower 2; the wastewater enters the tank body 1 through the water inlet distributor 19 and is separated from the sewage from the gas-liquid mixer 9 when entering the sludge tower 2;
the reflux collector 10 is arranged in the tank body 1 and is positioned below the three-phase separator 3; one end of the internal circulation pipe 32 passes through a hole set at the upper part of the cylinder 16 and is connected with the lower port of the backflow collector 10, and the outer pipe wall of the internal circulation pipe 32 is hermetically connected with the hole set at the upper part of the cylinder 16; the other end of the internal circulation pipe 32 is connected with the inlet of the internal circulation pump 11 arranged outside the tank body 1; the outlet of the internal circulating pump 11 is communicated with the lower part of the interior of the tank body 1 through a pipeline, and the outer wall of the pipeline is hermetically connected with a hole arranged on the cylinder 16; the internal circulation pump 11 returns part of the flocculent sludge of the reflux collector 10 to the bottom end of the tank body 1 through the internal circulation pipe 32, enters a granular sludge layer at the top of the sludge tower 2, and forms new granular sludge under the action of the snow rolling ball, thereby improving the sludge concentration and the sludge-water separation effect.
The left port of the sludge discharge outlet 33 passes through a hole set at the lower part of the cylinder 16 and is communicated with the inside of the cylinder 16, and the outer wall of the pipe is hermetically connected with the set hole; the height of the sludge discharge outlet 33 is equal to the height of a connecting pipe orifice of the internal circulating pump 11 and the cylinder 16;
the gas-liquid separator 4 penetrates through a hole set on the tank top 15 to enter a part of the tank body 1, and the outer wall of the gas-liquid separator 4 is hermetically connected with the hole set on the tank top 15; one end of a liquid lifting pipe 23 arranged in the tank body 1 is communicated with the interior of the gas-liquid separator 4 through a hole arranged at the lower part of the gas-liquid separator 4, and the outer wall of the liquid lifting pipe 23 is hermetically connected with the hole arranged at the lower part of the gas-liquid separator 4; the other end of the riser tube 23 is connected with the upper port of the gas collection cavity 22;
one end of the biogas pipe 14 is connected with a hole set at the top end of the gas-liquid separator 4 and is communicated with the inside of the gas-liquid separator 4, and one end of the biogas pipe 14 is a part of biogas discharge end;
the effluent weir 5 is arranged in the tank body 1 and is positioned above the three-phase separator 3; a hole pipeline on the side surface of the water outlet weir 5 is connected with a hole set on the right side of the water outlet distributor 6, the pipeline penetrates through a hole set on the cylinder 16, and the outer wall of the pipeline is hermetically connected with the set hole; the hole on the left side of the water outlet distributor 6 is connected with a water outlet pipe 13 which is a hole connected to another functional unit device; the water outlet distributor 6 is arranged outside the tank body 1;
in fact, the degradation of wastewater into biogas and treated sewage has accomplished the basic functions of the present invention; the discharged biogas and the treated sewage can be treated by the next functional unit; but in order to fully degrade the wastewater entering the tank body 1 and heat the sewage in the tank body, part of the treated sewage and the methane are sent back to the tank body 1 through the heat storage device 7 by utilizing the function that the methane can be combusted, so as to maintain the medium-temperature environment in the tank body;
one port of the air inlet pipe 27 is communicated with a hole arranged in the middle of the biogas pipe 14, and the other end of the air inlet pipe 27 is connected with an air inlet hole of the heat storage device 7; one end of the external circulation pipe 25 is connected with the lower end hole of the water outlet distributor 6, and the other end of the external circulation pipe 25 is connected with the water inlet hole of the heat storage device 7; one end of the hydrothermal solution outlet pipe 26 is connected with a water outlet of the heat storage device 7, and the other end of the hydrothermal solution outlet pipe 26 is connected with a water inlet of the external circulating pump 8; the water outlet of the external circulating pump 8 is connected with the water inlet of the gas-liquid mixer 9, the water outlet of the gas-liquid mixer 9 passes through a pipe and is communicated with the inner space at the lower part of the sludge tower 2 through a hole arranged at the lower part of the cylinder 16, and the outer wall of the pipe is hermetically connected with the holes arranged on the cylinder 16 and the tower body 18; the content of the part is that part of marsh gas and treated sewage are sent back to the tank body 1 after the marsh gas is burnt and heated, and the medium temperature environment in the tank is maintained;
a hole arranged in the middle of the air inlet pipe 27 is connected with an air inlet of the gas-liquid mixer 9 through a pipeline; supplementing biogas into the tank body 1 through a gas-liquid mixer 9;
the upper port of the downcomer 24 passes through the three-phase separator 3 and is connected with the lower port of the gas-liquid separator 4, and the lower port of the downcomer 24 is close to the upper end of the sludge tower 2. Returning the condensed sewage in the gas-liquid separator 4 to the bottom of the tank body 1;
the thermal storage device 7 mainly comprises: a flame arrester 28, a liquid burner 29, a buffer tank 30 and a control box 31;
the outlet of the flame arrester 28 is connected with the gas inlet pipeline of the submerged burner 29, the outlet pipeline of the submerged burner 29 is connected with the inlet of the buffer tank 30, and the control box 31 is a device for controlling the buffer tank 30 and the submerged burner 29; the inlet of the flame arrester 28 is the air inlet of the heat storage device 7, the inlet of the submerged burner 29 is the liquid inlet of the heat storage device 7, and the outlet of the buffer tank 30 is the outlet of the heat storage device 7.
Example 2
Example 2 of an anaerobic reactor for high concentration organic wastewater treatment differs from example 1 in that:
the upper part of the tower body 18 on the sludge tower 2 is of a conical structure, and the conical top angle of the conical structure is 120-165 degrees.
The setting of the conical top angle at the top of the sludge tower 2 improves the mixing effect of water and gas and ensures that the water and the gas are uniformly discharged into the tank body, thereby being beneficial to the mixing of the water and the sludge.
Working process
An anaerobic reactor for treating high-concentration organic wastewater is characterized in that after wastewater with high-concentration organic mixed microorganisms is injected into an inner cavity of a tank body 1 through a sludge tower 2, organic pollutants in the wastewater are removed under the degradation action of the microorganisms to generate biogas, and the degraded wastewater is discharged out of the tank body 1 through the gas-liquid-solid separation action of a three-phase separator 3. Burning a part of the discharged biogas to heat and raise the temperature of a part of degraded sewage, returning the sewage into the tank body 1, heating the sewage in the tank, and maintaining a medium-temperature environment. The conical hydraulic structure of the sludge tower 2 promotes the granular sludge generated in the tank body 1, and after a certain amount of sludge is generated, the sludge is discharged out of the tank body 1 through the sludge discharge hole 33.
High-concentration organic wastewater mixed with microorganisms is injected into a cavity at the upper part in the sludge tower 2 through a water inlet pipe 12, and the wastewater is uniformly injected into the tank body 1 through a water inlet distributor 19. Under the action of microorganisms, the wastewater is decomposed into biogas and treated sewage. Under the action of the three-phase separator 3, the marsh gas enters the gas-liquid separator 4 through the gas collecting cavity 22 and the liquid lifting pipe 23 for gas-water separation, and the marsh gas is discharged through the marsh gas pipe 14 and is treated by the next function. The condensed sewage is returned to the tank 1 through the downcomer 24 via the bottom of the gas-liquid separator 4.
The sewage in the tank body 1 rises to the water outlet weir 5 and is injected into the water outlet distributor 6 through a pipeline, and a part of the sewage is discharged through the water outlet distributor 6 and is sent to another sewage treatment unit; the other part of the sewage is sent to the heat storage device 7.
After a part of the marsh gas discharged from the tank body 1 and a part of the sewage discharged by the water outlet distributor 6 enter the heat storage device 7, the sewage is heated and discharged by the combustion of the marsh gas, and is sent to the space at the lower part of the sludge tower 2 by the external circulation pump 8 through the gas-liquid mixer 9 and is evenly injected into the tank body 1 through the external circulation distributor 20. The heated sewage can maintain the medium temperature environment in the tank body 1.
The heat storage device 7 is provided with a flame arrester 28 for preventing flame from flowing back to the methane pipe 14 to cause fire when methane in the heat storage device 7 is combusted; the control box 31 in the heat storage device 7 is used for controlling the combustion of the biogas; the buffer tank 30 is used for maintaining the flow stability of the external circulation pump 8.
The liquid mixer 9 is used for promoting the mixing of the biogas from the biogas pipe 14 and the heated sewage.
The internal circulation pump 11 returns part of the flocculent sludge of the reflux collector 10 to the bottom end of the tank body 1 through the internal circulation pipe 32, enters a granular sludge layer at the top of the sludge tower 2, and forms new granular sludge under the action of the snow rolling ball, thereby improving the sludge concentration and the sludge-water separation effect.
Claims (3)
1. An anaerobic reactor for the treatment of high concentration organic wastewater comprising: the system comprises a tank body (1), a sludge tower (2), a three-phase separator (3), a gas-liquid separator (4), a water outlet weir (5), a water outlet distributor (6), a heat storage device (7), an external circulating pump (8), a gas-liquid mixer (9), a reflux collector (10), an internal circulating pump (11), a water inlet pipe (12), a water outlet pipe (13), a biogas pipe (14), a liquid lifting pipe (23), a downcomer (24), an external circulating pipe (25), a hydrothermal liquid outlet pipe (26), an air inlet pipe (27), an internal circulating pipe (32) and a sludge discharge outlet (33); the jar body (1) by: a top filling (15), a cylinder body (16) and a tank bottom (17); the sludge tower (2) is of a tower-shaped structure and consists of a tower body (18), a water inlet distributor (19) and an external circulation distributor (20); the three-phase separator (3) is composed of a separation screen plate (21) and a gas collection cavity (22); the method is characterized in that:
the heat storage device (7) is arranged outside the anaerobic tank body, biogas generated by sewage degradation is used for heating external circulating water, heat is brought into the anaerobic reactor through the external circulating water, and the medium-temperature environment in the tank body is ensured; an air inlet, a liquid inlet and an outlet are arranged on the device;
the sludge discharge outlet (33) is provided with a sludge discharge gate valve which can be opened and closed;
the sludge tower (2) is arranged on the tank bottom (17) in the tank body (1); the inner space of the tower body (18) is divided into an upper space and a lower space by a clapboard; the water inlet distributor (19) is arranged at the upper part of the inner partition plate of the tower body (18), and the water inlet distributor (19) communicates the upper space in the tower body (18) with the outer space of the tower body (18); the outer circulation distributor (20) is arranged at the lower part of the inner partition plate of the tower body (18), and the inner lower space of the tower body (18) is communicated with the outer space of the tower body (18) by the outer circulation distributor (20);
the three-phase separator (3) is arranged at the upper part in the tank body (1), the gas collection cavity (22) of the three-phase separator (3) is arranged at the upper part of the separation screen plate (21), and the lower port of the gas collection cavity (22) is connected with a hole set at the upper end of the separation screen plate (21);
one end of the water inlet pipe (12) penetrates through a hole arranged at the lower part of the cylinder body (16), the outer pipe wall of the water inlet pipe (12) is hermetically connected with the hole arranged at the lower part of the cylinder body (16), and the water inlet pipe (12) penetrates through the tower body (18) to enter the space at the upper part of the sludge tower (2);
the reflux collector (10) is arranged in the tank body (1) and is positioned below the three-phase separator (3); one end of the internal circulation pipe (32) penetrates through a hole arranged at the upper part of the cylinder body (16) and is connected with the lower port of the backflow collector (10), and the outer pipe wall of the internal circulation pipe (32) is hermetically connected with the hole arranged at the upper part of the cylinder body (16); the other end of the internal circulation pipe (32) is connected with an inlet of an internal circulation pump (11) arranged outside the tank body (1); the outlet of the internal circulating pump (11) is communicated with the lower part of the interior of the tank body (1) through a pipeline, and the outer wall of the pipeline is hermetically connected with a hole arranged on the cylinder body (16);
the left port of the sludge discharge outlet (33) penetrates through a hole set at the lower part of the cylinder body (16) and is communicated with the inside of the cylinder body (16), and the outer wall of the pipe is hermetically connected with the set hole; the height of the sludge discharge outlet (33) is equal to the height of a connecting pipe orifice of the internal circulating pump (11) and the cylinder (16);
the gas-liquid separator (4) penetrates through a hole set on the tank top (15) to enter a part of the tank body (1), and the outer wall of the gas-liquid separator (4) is hermetically connected with the hole set on the tank top (15); one end of a liquid lifting pipe (23) arranged in the tank body (1) is communicated with the inside of the gas-liquid separator (4) through a hole set at the lower part of the gas-liquid separator (4), and the outer wall of the liquid lifting pipe (23) is hermetically connected with the hole set at the lower part of the gas-liquid separator (4); the other end of the liquid lifting pipe (23) is connected with the upper port of the gas collection cavity (22);
one end of the biogas pipe (14) is connected with a hole set at the top end of the gas-liquid separator (4) and is communicated with the inside of the gas-liquid separator (4), and one end of the biogas pipe (14) is a partial biogas removing end;
the water outlet weir (5) is arranged in the tank body (1) and is positioned above the three-phase separator (3); a hole pipeline on the side surface of the water outlet weir (5) is connected with a hole arranged on the right side of the water outlet distributor (6), the pipeline penetrates through a hole arranged on the cylinder body (16), and the outer wall of the pipeline is hermetically connected with the hole; the hole on the left side of the water outlet distributor (6) is connected with a water outlet pipe (13) which is a hole connected to another functional unit device; the water outlet distributor (6) is arranged outside the tank body (1);
one end port of the air inlet pipe (27) is communicated with a hole arranged in the middle of the biogas pipe (14), and the other end of the air inlet pipe (27) is connected with an air inlet of the heat storage device (7); one end of the external circulation pipe (25) is connected with the lower end hole of the water outlet distributor (6), and the other end of the external circulation pipe (25) is connected with the water inlet hole of the heat storage device (7); one end of the hydrothermal solution outlet pipe (26) is connected with a water outlet of the heat storage device (7), and the other end of the hydrothermal solution outlet pipe (26) is connected with a water inlet of the external circulating pump (8); the water outlet of the external circulating pump (8) is connected with the water inlet of the gas-liquid mixer (9), the water outlet of the gas-liquid mixer (9) passes through a hole set at the lower part of the cylinder (16) through a pipeline to be communicated with the inner space at the lower part of the sludge tower (2), and the outer wall of the pipeline is hermetically connected with the holes set by the cylinder (16) and the tower body (18);
a hole arranged in the middle of the air inlet pipe (27) is connected with an air inlet of the gas-liquid mixer (9) through a pipeline;
the upper port of the downcomer (24) passes through the three-phase separator (3) and is connected with the lower port of the gas-liquid separator (4), and the lower port of the downcomer (24) is close to the upper end of the sludge tower (2).
2. An anaerobic reactor for the treatment of high concentration organic wastewater according to claim 1, characterized in that:
the heat storage device (7) is mainly composed of: a flame arrester (28), a liquid burner (29), a buffer tank (30) and a control box (31);
the outlet of the flame arrester (28) is connected with the air inlet pipeline of the submerged burner (29), the outlet pipeline of the submerged burner (29) is connected with the inlet of the buffer tank (30), and the control box (31) is a device for controlling the buffer tank (30) and the submerged burner (29); the inlet of the flame arrester (28) is the air inlet of the heat storage device (7), the inlet of the submerged burner (29) is the liquid inlet of the heat storage device (7), and the outlet of the buffer tank (30) is the outlet of the heat storage device (7).
3. An anaerobic reactor for the treatment of high concentration organic wastewater according to claim 1, characterized in that:
the upper part of the tower body (18) on the sludge tower (2) is of a conical structure, and the conical vertex angle of the conical structure is 120-165 degrees.
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| US20130319935A1 (en) * | 2012-06-01 | 2013-12-05 | Brad Leitner | Reactor for anaerobic purification of water |
| CN203582584U (en) * | 2013-11-26 | 2014-05-07 | 九江赛恩斯环保科技发展有限公司 | Double-layer soluble cyclone flow enhanced internal-circulation-type anaerobic reactor |
| CN203715375U (en) * | 2014-03-07 | 2014-07-16 | 齐鲁工业大学 | Automatic circulation rotary mixing type internal circulation anaerobic reactor |
| CN203904068U (en) * | 2014-07-02 | 2014-10-29 | 沈阳金诚环保科技有限公司 | Vertical-flow two-stage anaerobic reactor |
| CN106315977A (en) * | 2016-09-09 | 2017-01-11 | 华纺股份有限公司 | Printing and dyeing wastewater treatment technique |
| CN211311026U (en) * | 2019-12-11 | 2020-08-21 | 辽宁博创环保技术有限公司 | Anaerobic reactor for treating high-concentration organic wastewater |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130319935A1 (en) * | 2012-06-01 | 2013-12-05 | Brad Leitner | Reactor for anaerobic purification of water |
| CN203582584U (en) * | 2013-11-26 | 2014-05-07 | 九江赛恩斯环保科技发展有限公司 | Double-layer soluble cyclone flow enhanced internal-circulation-type anaerobic reactor |
| CN203715375U (en) * | 2014-03-07 | 2014-07-16 | 齐鲁工业大学 | Automatic circulation rotary mixing type internal circulation anaerobic reactor |
| CN203904068U (en) * | 2014-07-02 | 2014-10-29 | 沈阳金诚环保科技有限公司 | Vertical-flow two-stage anaerobic reactor |
| CN106315977A (en) * | 2016-09-09 | 2017-01-11 | 华纺股份有限公司 | Printing and dyeing wastewater treatment technique |
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