Heat accumulating type combustion device capable of treating waste water and waste water

Abstract

The invention relates to environmental protection equipment, in particular to a heat accumulating type combustion device capable of treating waste gas and waste water, which comprises a combustion chamber, a plurality of preheating chambers for preheating waste gas and a plurality of heat accumulating chambers for recovering temperature, the preheating chambers are communicated with the combustion chamber through preheating gas pipes, the combustion chamber is communicated with the heat accumulating chambers through discharge pipes, and the discharge pipes are communicated with the heat accumulating chambers. The heat storage chamber is connected with the preheating chamber through a first heat exchange pipeline, an exhaust pipe is arranged at an air outlet of the wastewater pretreatment device, and the other end of the exhaust pipe is communicated with an inner cavity of the preheating chamber; a plurality of nozzles are arranged on the inner wall of the combustion chamber, the other end of the water outlet pipe is communicated with the nozzles, and the wastewater pretreatment device is connected with the preheating chamber through a second heat exchange pipeline. According to the heat accumulating type combustion device capable of treating the waste gas and the waste water, the waste gas and the waste water can be efficiently treated at the same time.

Description

Technical Field

[0003] The invention relates to environmental protection equipment, in particular to a heat storage combustion device capable of treating waste and waste water. Background Art

[0004] RTO is the abbreviation of Regenerative Thermal Oxidizer, which is also called regenerative thermal incinerator, regenerative combustion furnace, and regenerative oxidation furnace. It is a kind of equipment used to treat industrial waste gas, mainly used in the field of waste gas treatment and purification. The working principle of RTO furnace is to react organic compounds in organic waste gas with oxygen under high temperature conditions to oxidize them into carbon dioxide and water, thereby achieving the purpose of environmental protection. RTO furnace has the advantages of high purification efficiency, high heat recovery rate, and energy saving.

[0005] The existing RTO furnace has the following problems: the existing RTO furnace mainly treats waste gas and cannot directly treat wastewater. However, enterprises may obtain difficult-to-treat wastewater after production activities, especially wastewater with high ammonia nitrogen content. These wastewaters are not only difficult to treat, but also have certain corrosiveness. If improperly handled, they may cause serious environmental pollution. Summary of the invention

[0006] Purpose of the invention: The purpose of the present invention is to provide a regenerative combustion device that can simultaneously and efficiently treat waste gas and waste water.

[0007] Technical solution: The heat storage combustion device capable of treating waste and wastewater described in the present invention comprises a combustion chamber, a plurality of preheating chambers for preheating exhaust gas and a plurality of heat storage chambers for recovering temperature, wherein the preheating chamber is communicated with the combustion chamber through a preheating air pipe, the combustion chamber is communicated with the heat storage chamber through a discharge pipe, the heat storage chamber is connected with the preheating chamber through a first heat exchange pipe, and further comprises a wastewater pretreatment device, wherein an exhaust pipe is arranged at the air outlet of the wastewater pretreatment device, and the other end of the exhaust pipe is communicated with the inner cavity of the preheating chamber; an outlet pipe is arranged at the water outlet of the wastewater pretreatment device, a plurality of nozzles are arranged on the inner wall of the combustion chamber, the other end of the outlet pipe is communicated with the nozzle, and the wastewater pretreatment device is connected with the preheating chamber through a second heat exchange pipe.

[0008] Furthermore, the wastewater pretreatment device includes a tank body made of metal material, the interior of the tank body is filled with activated sludge, a two-phase separator is fixedly arranged inside the tank body, the two-phase separator divides the inner cavity of the tank body into a secondary treatment chamber and a primary treatment chamber from top to bottom along the longitudinal direction, and the volume ratio of the secondary treatment chamber to the primary treatment chamber is 1:3 to 1:3.5; a plurality of water distribution pipes connected to an external water source extend into the bottom of the primary treatment chamber, and a plurality of water distribution ports are provided in the lower half of the water distribution pipe; a first aeration pipe connected to an external air compressor extends horizontally into the primary treatment chamber, and a plurality of aeration holes are provided in the upper half of the first aeration pipe, and the first aeration pipe divides the primary treatment chamber into a primary aerobic zone and a primary anoxic zone arranged from top to bottom, and the volume ratio of the primary aerobic zone to the primary anoxic zone is 2:1 to 2.3:1; a vertical partition is provided in the secondary treatment chamber, and the upper and lower ends of the partition are respectively abutted against the inner wall of the secondary treatment chamber, The partition separates the secondary treatment chamber into a horizontally arranged secondary aerobic zone and a secondary anoxic zone. A plurality of through holes are provided on the partition to connect the secondary aerobic zone and the secondary anoxic zone. The volume ratio of the secondary aerobic zone to the secondary anoxic zone is 1:1.1-1:1.6. An isolation plate for isolation is provided at the connection between the bottom of the secondary aerobic zone and the two-phase separator. The second aeration pipe connected to an external air compressor extends into the secondary aerobic zone. The top surface of the two-phase separator is communicated with the secondary anoxic zone, and the bottom surface of the two-phase separator is communicated with the primary aerobic zone. The water inlet of the water outlet pipe is communicated with the secondary aerobic zone. A gas-liquid separator is fixedly provided outside the tank body. The gas-liquid separator is externally connected to a plurality of primary guide pipes and a plurality of secondary guide pipes. The primary guide pipe is communicated with the gas outlet of the two-phase separator, and the secondary guide pipe is communicated with the top of the secondary treatment chamber. A central pipe is provided at the bottom of the gas-liquid separator, and the central pipe extends into the bottom of the first anoxic zone. The gas-liquid separator is externally connected to an exhaust pipe.

[0009] Furthermore, a water outlet pump is provided on the water outlet pipe.

[0010] Furthermore, the angle between the water distribution port and the vertical direction is 20 to 50 degrees.

[0011] Furthermore, the bottom side wall of the tank body is externally connected to a mud discharge pipe, and the mud discharge pipe is externally connected to a mud discharge pump.

[0012] Further, a plurality of explosion-proof valves are arranged on the top or side wall of the combustion chamber, and the explosion-proof valve comprises a hollow main valve body, an air inlet is arranged at the bottom of the main valve body, an air outlet pipe with openings at both ends is arranged on the top of the main valve body, the opening at the lower end of the air outlet pipe extends into the cavity of the main valve body, and a closing plate for normally closing the opening at the lower end of the air outlet pipe is slidably arranged in the main valve body. The position of the closing plate corresponds to the position of the opening at the lower end of the air outlet pipe.

[0013] Furthermore, a plurality of pairs of rotatably connected rotating pins and cranks are evenly arranged in the main valve body, and one end of the crank is fixedly connected to the closing plate.

[0014] Furthermore, a plurality of connecting plates are evenly distributed in the main valve body, and the connecting plates are fixedly connected to the rotating pin.

[0015] Furthermore, a plurality of normally closed springs are evenly distributed in the main valve body, the bottom of the normally closed spring is fixedly connected to the push plate, and the side surface of the push plate is fixedly connected to the other end of the crank.

[0016] Furthermore, a number of cylindrical guide cylinders for guiding the normally closed spring are evenly arranged on the top of the main valve body, an opening is set at the bottom of the guide cylinder, the top of the normally closed spring is abutted or fixedly connected to the top of the guide cylinder; the side wall of the guide cylinder is provided with a side sliding opening for the sliding of the crank.

[0017] Furthermore, the side wall of the pushing plate is slidably connected to the inner wall of the guide cylinder.

[0018] Furthermore, the bottom of the push plate is connected to a counterweight block, and the counterweight block is used to pull the push plate downward with the assistance of gravity, thereby assisting the closing plate to reset through the crank, and normally closing the opening at the lower end of the air outlet pipe.

[0019] Furthermore, the outer wall of the lower end of the air outlet pipe is provided with a chamfer to prevent interference.

[0020] Furthermore, a plurality of air holes are provided on the closing plate, and the positions of the air holes correspond to the positions of the end wall at the bottom of the outlet pipe (i.e., the solid part of the bottom end surface of the outlet pipe); when the closing plate closes the opening at the lower end of the outlet pipe, the end wall at the lower end of the outlet pipe closes the air holes.

[0021] Furthermore, a flow control safety valve is arranged at the port where the preheating gas pipe enters the combustion chamber, and the flow control safety valve comprises a hollow outer shell and a hollow inner shell, the inner shell is slidably arranged in the outer shell, the end of the outer shell opposite to the inlet is closed, an electromagnetic control valve is fixedly arranged in the outer shell, the output end of the electromagnetic control valve is fixedly connected to the inner shell, and a power-off protection device is arranged on the wire of the external power supply on the electromagnetic control valve; the end of the inner shell opposite to the inlet is closed, and a flow sensor is arranged in the inner shell; the side wall of the outer shell is arranged with an outer opening, and the side wall of the inner shell is arranged with an inner opening for cooperating with the outer opening to form an actual outlet. The flow control safety valve is used to control the intake flow and prevent the gas flow from being too large instantly. The electromagnetic control valve changes the relative position of the inner shell and the outer shell, thereby changing the size of the actual outlet formed between the inner opening and the outer opening, thereby controlling the intake flow. If the flow sensor detects that the gas flow is too large instantly, the power-off protection device is activated to cut off the power to the electromagnetic control valve, and the electromagnetic control valve loses control of the inner shell. Under the action of the excessive gas flow, the inner shell is pushed to the bottom of the outer shell, and the inner opening is completely closed by the outer shell, and the gas cannot enter the combustion chamber, thereby preventing excessive gas from entering the combustion chamber and causing explosion.

[0022] Furthermore, the combustion chamber is provided with an intake density sensor near the preheating air pipe, and an outlet density sensor is provided near the inlet of the discharge pipe; the volume of gas entering the combustion chamber from the preheating air pipe is A, the density of gas entering the combustion chamber from the preheating air pipe is B, the volume of the mixture at the inlet of the discharge pipe of the combustion chamber is C, and the density of the mixture at the inlet of the discharge pipe of the combustion chamber is D, then the purification efficiency in the combustion chamber is:

[0023]

[0024] Among them, 99.7%η≥99.5%, so as to control the flow rate of incoming gas according to the gas that has been processed by the combustion chamber, prevent the purification efficiency from decreasing due to excessive incoming gas, and keep the purification efficiency within the ideal range.

[0025] Furthermore, a plurality of burners for producing high-temperature, oxidized exhaust gas are arranged in the combustion chamber, and the burners are respectively connected to one end of the fuel feed pipe and the air intake pipe, the other end of the fuel feed pipe is connected to the fuel storage device, and the other end of the air intake pipe is connected to the air compressor.

[0026] Furthermore, the pressure of the air in the intake pipe is 6 to 10 bar.

[0027] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. A wastewater pretreatment device is provided in the present invention, and the wastewater pretreatment device is filled with activated sludge, and the biological characteristics are used to preliminarily treat the wastewater, and the wastewater is preliminarily decomposed into waste gas and liquid that are easier to post-treat, so that the wastewater can be thoroughly treated; 2. The waste gas obtained after the preliminary treatment by the wastewater pretreatment device is mixed with other waste gases in the preheating chamber and preheated to a suitable temperature, and then enters the combustion chamber for combustion; when the wastewater obtained after the preliminary treatment by the wastewater pretreatment device passes through the nozzle, it is atomized under the action of the pressure pump and oxidized and decomposed in the furnace; 3. The wastewater pretreatment device uses the power generated by aeration and the upflow structure Gravity reduces the use of pumps, which saves energy and reduces equipment and maintenance costs; 4. The biological reaction in the wastewater pretreatment device may release a large amount of heat in a short period of time. The heat exchange area with the air inside the wastewater pretreatment device is expanded, which is conducive to heat dissipation and cooling. The wastewater pretreatment device is connected to the preheating chamber through a second heat exchange pipeline, and the heat can be recovered to the preheating chamber for heating the gas. This not only solves the problem that the wastewater pretreatment device has to increase the floor area to improve the heat dissipation efficiency, saves land use area, but also achieves energy-saving effects; 5. The present invention adopts an explosion-proof valve that can be automatically reset instead of a traditional explosion-proof disc. When the air pressure in the combustion chamber is too high due to deflagration, The air pressure pushes the push plate to move upward, and pushes the crank to rotate around the rotating pin, thereby releasing the sealing of the closing plate on the air outlet pipe, and the gas is discharged from the air outlet pipe; when the air pressure in the combustion chamber returns to normal, under the action of the normally closed spring and the counterweight, the push plate is reset downward, and the crank drives the closing plate to move upward until the air outlet pipe is closed; 6. The explosion-proof valve adopted in the present invention can not only realize timely pressure relief, but also the closing plate closes the air outlet pipe under the dual action of the normally closed spring and the counterweight (i.e. gravity), and its sealing performance can be guaranteed even if the normally closed spring fails after long-term use; 7. The air pressure may be in an asymmetric state during combustion in the combustion chamber, and the local pressure may be relatively large. The explosion-proof valve adopted in the present invention It is possible to achieve that one end of the closing plate is in contact with the air outlet pipe while there is a gap between the other end and the air outlet pipe, and the end wall at the bottom of the air outlet pipe releases the seal on the air vent on the closing plate, and the local air pressure can be discharged through the air vent-the air outlet pipe; 8. The flow control safety valve technology arranged at the port where the preheating air pipe enters the combustion chamber can control the air intake flow rate and thus control the purification efficiency in the combustion chamber to be within an ideal range, and can also prevent the gas flow rate from being too large instantly, causing a deflagration in the combustion chamber, thereby ensuring the safety and order of the business operations of the enterprise; 9. Since there is no need to replace the explosion venting plate, the enterprise can continue production activities without shutting down, which indirectly improves the purification efficiency; 10. The present invention does not have the problem of honeycomb ceramic sticking and clogging, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the present invention.

[0029] Figure 2It is a schematic diagram of the wastewater pretreatment device in the present invention.

[0030] Figure 3 It is a cross-sectional view of the explosion-proof valve in the present invention.

[0031] Figure 4 for Figure 2 Enlarged view at A.

[0032] Figure 5 It is a three-dimensional diagram of the closing plate in the present invention.

[0033] Figure 6 It is a stereoscopic diagram of the flow control safety valve in the present invention.

[0034] Figure 7 It is a cross-sectional view of the flow control safety valve in the present invention.

[0035] Figure 8 It is a cross-sectional view of the housing in the present invention.

[0036] Fig. 9 It is a cross-sectional view of the inner shell in the present invention.

[0037] Fig.10 It is a schematic diagram of the electromagnetic control valve in the present invention.

[0038] Among them: 1. Preheating chamber; 2. Preheating air pipe; 3. Flow control safety valve; 301. Inner shell; 3011. External opening; 302. Outer shell; 3021. Internal opening; 303. Flow sensor; 304. Solenoid control valve; 3041. Power-off protection device; 4. Burner; 5. Combustion chamber; 501. Nozzle; 6. Explosion-proof valve; 601. Normally closed spring; 602. Guide cylinder; 6021. Side sliding port; 603. Push plate; 604. Counterweight; 605. Crank; 606. Main valve body; 607. Closing plate; 6071. Air vent; 608. Air outlet pipe; 609. Connecting plate; 610. Rotating pin; 7. Fuel storage device; 701. Fuel inlet pipe; 8. Air compressor; 801. Air intake pipe; 802, second aeration pipe; 803, first aeration pipe; 9, discharge pipe; 10, heat storage chamber; 11, first heat exchange pipeline; 12, wastewater pretreatment device; 1201, tank body; 120101, primary anoxic zone; 120102, primary aerobic zone; 120103, secondary anoxic zone; 120104, secondary aerobic zone; 1202, gas-liquid separator; 120201, primary flow guide pipe; 120202, secondary flow guide pipe; 120203, central pipe; 1203, water outlet pump; 1204, water distribution pipe; 1205, sludge pump; 1206, two-phase separator; 1207, partition; 13, exhaust pipe; 14, second heat exchange pipeline; 15, water outlet pipe; 16, booster pump. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0040] See attached Figures 1 to 10 The present invention discloses a heat storage combustion device for treating waste and wastewater, comprising a combustion chamber 5, a wastewater pretreatment device 12, a plurality of preheating chambers 1 for preheating waste gas, and a plurality of heat storage chambers 10 for recovering temperature (in order to simplify the description, only one preheating chamber 1 and one heat storage chamber 10 are drawn in the embodiment), the preheating chamber 1 is communicated with the combustion chamber 5 through a preheating air pipe 2, the combustion chamber 5 is communicated with the heat storage chamber 10 through a discharge pipe 9, the heat storage chamber 10 is connected with the preheating chamber 1 through a first heat exchange pipe 11, an exhaust pipe 13 is arranged at the air outlet of the wastewater pretreatment device 12, and the other end of the exhaust pipe 13 is communicated with the inner cavity of the preheating chamber 1; the wastewater pretreatment device 1 2 is provided with a water outlet pipe 15, a plurality of nozzles 501 are provided on the inner wall of the combustion chamber 5, the other end of the water outlet pipe 15 is communicated with the nozzle 501, the output end of the booster pump 16 is communicated with the nozzle 501, the wastewater pretreatment device 12 is connected to the preheating chamber 1 through the second heat exchange pipe 14, a burner 4 for generating high-temperature, oxidized exhaust gas is provided in the combustion chamber 5, the burner 4 is respectively connected to one end of the fuel feed pipe 701 and the air intake pipe 801, the other end of the fuel feed pipe is connected to the fuel storage device 7, and the other end of the air intake pipe 801 is connected to the air compressor 8; the pressure of the air in the air intake pipe 801 is 6 to 10 bar, preferably 8 bar.

[0041] The wastewater pretreatment device 12 includes a tank body 1201 made of metal material. The interior of the tank body 1201 is filled with activated sludge. A two-phase separator 1206 is fixedly arranged inside the tank body 1201. The two-phase separator 1206 divides the inner cavity of the tank body 1201 into a secondary treatment chamber and a primary treatment chamber from top to bottom along the longitudinal direction. The volume ratio of the secondary treatment chamber to the primary treatment chamber is 1:3.2; a plurality of water distribution pipes 1204 connected to an external water source extend into the bottom of the primary treatment chamber, and a plurality of water distribution ports are provided in the lower half of the water distribution pipe 1204, and the angle between the water distribution port and the vertical direction is 45 degrees; the first aeration pipe 803 connected to the external air compressor 8 extends horizontally into the primary treatment chamber. The first aeration pipe 803 has a plurality of aeration holes in its upper half, and the first aeration pipe 803 divides the primary treatment chamber into a primary aerobic zone 120102 and a primary anoxic zone 120101 arranged from top to bottom, and the volume ratio of the primary aerobic zone 120102 to the primary anoxic zone 120101 is 2.15:1; a vertical partition 1207 is arranged in the secondary treatment chamber, and the upper and lower ends of the partition 1207 are respectively abutted against the inner wall of the secondary treatment chamber, and the partition 1207 divides the secondary treatment chamber into a horizontally arranged secondary aerobic zone 120104 and a secondary anoxic zone 120103, and a plurality of holes are provided in the partition 1207 to connect the secondary aerobic zone 120104 and the secondary anoxic zone 120103. The through holes of the primary aerobic zone 120104 and the secondary anoxic zone 120103 are connected, and the volume ratio of the secondary aerobic zone 120104 to the secondary anoxic zone 120103 is 1:1.4. An isolation plate for isolation is set at the connection between the bottom of the secondary aerobic zone 120104 and the two-phase separator 1206; the second aeration pipe 802 of the external air compressor 8 extends into the secondary aerobic zone 120104; the top surface of the two-phase separator 1206 is connected to the secondary anoxic zone 120103, and the bottom surface of the two-phase separator 1206 is connected to the primary aerobic zone 120102; the water inlet of the water outlet pipe 15 is connected to the secondary aerobic zone 120104; the tank body 120 1, a gas-liquid separator 1202 is fixedly arranged outside, and the gas-liquid separator 1202 is externally connected to a plurality of primary guide pipes 120201 and a plurality of secondary guide pipes 120202, the primary guide pipe 120201 is communicated with the gas outlet of the two-phase separator 1206, and the secondary guide pipe 120202 is communicated with the top of the secondary treatment chamber, a central pipe 120203 is arranged at the bottom of the gas-liquid separator 1202, and the central pipe 120203 extends into the bottom of the first anoxic zone, and the gas-liquid separator 1202 is externally connected to the exhaust pipe 13; a water outlet pump 1203 is arranged on the water outlet pipe 15; a mud discharge pipe is externally connected to the side wall of the bottom of the tank body 1201, and the mud discharge pipe is externally connected to the mud discharge pump 1205.

[0042] A plurality of explosion-proof valves 6 are arranged on the top or side wall of the combustion chamber 5, and the explosion-proof valve 6 includes a hollow main valve body 606, an air inlet is provided at the bottom of the main valve body 606, an air outlet pipe 608 with openings at both ends is arranged on the top of the main valve body 606, the opening at the lower end of the air outlet pipe 608 extends into the cavity of the main valve body 606, and the outer wall of the lower end of the air outlet pipe 608 is provided with a chamfer for preventing interference; a closing plate 607 is slidably arranged inside the main valve body 606. The position of the closing plate 607 corresponds to the position of the opening at the lower end of the air outlet pipe 608; two connecting plates 609 are evenly distributed in the main valve body 606, each connecting plate 609 is fixedly connected to a rotating pin 610, two rotating pins 610 and two cranks 605 are evenly arranged in the main valve body 606, the rotating pins 610 and the cranks 605 are rotatably connected, and one end of the crank 605 is fixedly connected to the closing plate 607; two cylindrical guide cylinders 602 for guiding the normally closed spring 601 are evenly arranged on the top of the main valve body 606, the bottom of the guide cylinder 602 is provided with an opening, and a normally closed spring 601 is arranged in each guide cylinder 602, and the top of the normally closed spring 601 abuts or contacts the top of the guide cylinder 602. The two are fixedly connected, the bottom of the normally closed spring 601 is fixedly connected to the push plate 603, the side wall of the push plate 603 is slidably connected to the inner wall of the guide cylinder 602, the side of the push plate 603 is fixedly connected to the other end of the crank 605, and the side wall of the guide cylinder 602 is provided with a side sliding opening 6021 for the sliding of the crank 605; the bottom of the push plate 603 is connected to the counterweight block 604; a plurality of air holes 6071 are provided on the closing plate 607, and the positions of the air holes 6071 correspond to the positions of the end wall at the bottom of the air outlet pipe 608 (that is, the solid part of the bottom end face of the air outlet pipe 608); when the closing plate 607 closes the opening at the lower end of the air outlet pipe 608, the end wall at the lower end of the air outlet pipe 608 closes the air holes 6071.

[0043] A flow control safety valve 3 is arranged at the port where the preheating gas pipe 2 enters the combustion chamber 5. The flow control safety valve 3 comprises a hollow outer shell 302 and a hollow inner shell 301. The inner shell 301 is slidably arranged in the outer shell 302. The end of the outer shell 302 opposite to the inlet is closed. An electromagnetic control valve 304 is fixedly arranged in the outer shell 302. The output end of the electromagnetic control valve 304 is fixedly connected to the inner shell 301. A power-off protection device 3041 is arranged on the wire of the external power supply on the electromagnetic control valve 304; the end of the inner shell 301 opposite to the inlet is closed, and a flow sensor 303 is arranged in the inner shell 301; an outer opening 3011 is arranged on the side wall of the outer shell 302, and an inner opening 3021 is arranged on the side wall of the inner shell 301 for cooperating with the outer opening 3011 to form an actual outlet.

[0044] The combustion chamber 5 is provided with an intake density sensor near the preheating gas pipe 2, and the combustion chamber 5 is provided with an outlet density sensor near the inlet of the discharge pipe 9; the volume of the gas entering the combustion chamber 5 from the preheating gas pipe is A, the density of the gas entering the combustion chamber 5 from the preheating gas pipe 2 is B, the volume of the mixture at the inlet of the discharge pipe 9 of the combustion chamber 5 is C, and the density of the mixture at the inlet of the discharge pipe 9 of the combustion chamber 5 is D, then the purification efficiency in the combustion chamber is:

[0045]

[0046] Among them, 99.7%η≥99.5%, so as to control the flow rate of the incoming gas according to the gas that has been processed by the combustion chamber 5, prevent the purification efficiency from decreasing due to excessive incoming gas, and keep the purification efficiency within the ideal range.

[0047] In the wastewater pretreatment device 12, the tank body 1201 is filled with activated sludge, and the wastewater enters the primary anoxic zone 120101 at the bottom of the tank body 1201 through the water distribution pipe 1204. The wastewater rises steadily in the tank body 1201. The water distribution port is opened in the lower half of the water distribution pipe and is at an angle of 45 degrees to the vertical direction. Therefore, when the wastewater enters, it can reduce the damage to the sludge ecosystem and reduce the impact load. The primary anoxic zone 120101 is in anoxic environment due to the lack of aeration; the wastewater rises to the position of the first aeration pipe 803 and enters the primary aerobic zone 120102. The air compressor 8 injects compressed air into the first aeration pipe 803 to form aeration. The purpose of aeration is The oxygen content in the wastewater is increased to provide a suitable treatment environment for the primary aerobic zone 120102. Aeration has the function of stirring the sludge, increasing the contact area between the sludge and the wastewater, and increasing the sludge load. In this process, the aeration volume needs to be controlled to control the mixing ratio of anaerobic sludge and aerobic sludge, and maintain the anoxic environment of the primary anoxic zone 120101. After aeration, the wastewater continues to rise and passes through the two-phase separator 1206. The two-phase separator 1206 separates the water treated by the microbial reaction from the gas in the reaction process. Since an isolation plate is set at the bottom of the secondary aerobic zone 120104, the treated water can only enter the secondary anoxic zone through the two-phase separator 1206. The treated water flows from the secondary anoxic zone 120103 through the through hole on the partition 1207 into the secondary aerobic zone 120104. The second aeration pipe 802 extends into the secondary aerobic zone 120104 for secondary aeration. The water treated by the secondary aeration is discharged to the nozzle 501 provided in the combustion chamber 5 through the outlet pipe 15 under the action of the outlet pump 1203. The water treated by the secondary aeration is sprayed into the combustion chamber 5 in an atomized state under the action of the booster pump 16 to facilitate combustion, oxidation and decomposition. The gas separated by the two-phase separator 1206 will carry part of the treated water of the primary aeration through the primary guide pipe 1202. 01 enters the gas-liquid separator 1202, and the gas generated by the reaction in the secondary anoxic zone 120103 and the secondary aerobic zone 120104 enters the gas-liquid separator 1202 through the secondary guide pipe 120202, and the gas-liquid separation operation is carried out inside the gas-liquid separator 1202, and the gas is finally discharged into the preheating chamber 1, and the treated water of the first aeration returns to the primary anoxic zone 120101 through the central pipe 120203 to be biochemically treated again. At the same time, the impact force formed by the backflow of the treated water of the first aeration causes turbulence at the bottom, which plays a role in stirring the sludge, increasing the contact area between the sludge and the wastewater, increasing the sludge load, and at the same time uniforming the water quality.

Claims

1. A regenerative combustion device for treating waste and wastewater, comprising a combustion chamber (5), a plurality of preheating chambers (1) for preheating waste gas, and a plurality of regenerative chambers (10) for recovering temperature, wherein the preheating chamber (1) is connected to the combustion chamber (5) through a preheating gas pipe (2), the combustion chamber (5) is connected to the regenerative chamber (10) through a discharge pipe (9), and the regenerative chamber (10) is connected to the preheating chamber (1) through a first heat exchange pipe (11), characterized in that: The invention also comprises a wastewater pretreatment device (12), wherein an exhaust pipe (13) is arranged at the air outlet of the wastewater pretreatment device (12), and the other end of the exhaust pipe (13) is communicated with the inner cavity of the preheating chamber (1); a water outlet pipe (15) is arranged at the water outlet of the wastewater pretreatment device (12), and a plurality of nozzles (501) are arranged on the inner wall of the combustion chamber (5), and the other end of the water outlet pipe (15) is communicated with the nozzle (501); the wastewater pretreatment device (12) is connected to the preheating chamber (1) via a second heat exchange pipe (14).

2. A regenerative combustion device for treating waste and wastewater according to claim 1, characterized in that: The wastewater pretreatment device (12) comprises a tank body (1201) made of a metal material, the interior of the tank body (1201) is filled with activated sludge, a two-phase separator (1206) is fixedly arranged inside the tank body (1201), and the two-phase separator (1206) divides the inner cavity of the tank body (1201) into a secondary treatment chamber and a primary treatment chamber from top to bottom along the longitudinal direction, and the volume ratio of the secondary treatment chamber to the primary treatment chamber is 1:3 to 1:3.5; a plurality of water distribution pipes (1204) connected to an external water source extend into the bottom of the primary treatment chamber, and a plurality of water distribution ports are provided in the lower half of the water distribution pipe (1204); a first aeration pipe (803) connected to an external air compressor (8) extends horizontally into the primary treatment chamber , a plurality of aeration holes are provided in the upper half of the first aeration tube (803), the first aeration tube (803) divides the primary treatment chamber into a primary aerobic zone (120102) and a primary anoxic zone (120101) arranged from top to bottom, the volume ratio of the primary aerobic zone (120102) to the primary anoxic zone (120101) is 2:1 to 2.3:1; a vertical partition (1207) is provided in the secondary treatment chamber, the upper and lower ends of the partition (1207) are respectively abutted against the inner wall of the secondary treatment chamber, the partition (1207) divides the secondary treatment chamber into a horizontally arranged secondary aerobic zone (120104) and a secondary anoxic zone (120103), the partition ( A plurality of through holes are provided in the second aerobic zone (120104) and the second anoxic zone (120103) for connecting the second aerobic zone (120104) and the second anoxic zone (120103); the volume ratio of the second aerobic zone (120104) to the second anoxic zone (120103) is 1:1.1 to 1:1.6; an isolation plate for isolation is provided at the connection between the bottom of the second aerobic zone (120104) and the two-phase separator (1206); a second aeration pipe (802) connected to an external air compressor (8) extends into the second aerobic zone (120104); the top surface of the two-phase separator (1206) is in communication with the second anoxic zone (120103), and the bottom surface of the two-phase separator (1206) is in communication with the first aerobic zone (120102); The water inlet of the water pipe (15) is communicated with the secondary aerobic zone (120104); a gas-liquid separator (1202) is fixedly arranged outside the tank body (1201); the gas-liquid separator (1202) is externally connected to a plurality of primary flow guide pipes (120201) and a plurality of secondary flow guide pipes (120202); the primary flow guide pipe (120201) is communicated with the gas outlet of the two-phase separator (1206); the secondary flow guide pipe (120202) is communicated with the top of the secondary treatment chamber; a central pipe (120203) is arranged at the bottom of the gas-liquid separator (1202); the central pipe (120203) extends into the bottom of the first anoxic zone; and the gas-liquid separator (1202) is externally connected to an exhaust pipe (13).

3. A regenerative combustion device for treating waste and wastewater according to claim 2, characterized in that: A water outlet pump (1203) is provided on the water outlet pipe (15).

4. A regenerative combustion device for treating waste and wastewater according to claim 2, characterized in that: The angle between the water distribution port and the vertical direction is 20 to 50 degrees.

5. A regenerative combustion device for treating waste and wastewater according to claim 2, characterized in that: The bottom side wall of the tank body (1201) is externally connected to a mud discharge pipe, and the mud discharge pipe is externally connected to a mud discharge pump (1205).

6. A regenerative combustion device for treating waste and wastewater according to claim 1, characterized in that: A plurality of explosion-proof valves (6) are arranged on the top or side wall of the combustion chamber (5).

7. A regenerative combustion device for treating waste and wastewater according to claim 1, characterized in that: A flow control safety valve (3) is arranged at the port where the preheating gas pipe (2) enters the combustion chamber (5), and the flow control safety valve (3) comprises a hollow outer shell (302) and a hollow inner shell (301), wherein the inner shell (301) is slidably arranged in the outer shell (302), and the end of the outer shell (302) opposite to the inlet is closed, and an electromagnetic control valve (304) is fixedly arranged in the outer shell (302), and the output end of the electromagnetic control valve (304) is fixedly connected to the inner shell (301), and a power-off protection device (3041) is arranged on the wire of the external power supply on the electromagnetic control valve (304); the end of the inner shell (301) opposite to the inlet is closed, and a flow sensor (303) is arranged in the inner shell (301); an outer opening (3011) is arranged on the side wall of the outer shell (302), and an inner opening (3021) used to cooperate with the outer opening (3011) to form an actual outlet is arranged on the side wall of the inner shell (301).

8. A regenerative combustion device for treating waste and wastewater according to claim 7, characterized in that: The combustion chamber (5) is provided with an intake air density sensor near the preheating air pipe (2), and the combustion chamber (5) is provided with an outlet air density sensor near the inlet of the discharge pipe (9); the volume of gas entering the combustion chamber (5) from the preheating air pipe (2) is A, the density of gas entering the combustion chamber (5) from the preheating air pipe (2) is B, the volume of the mixture in the combustion chamber (5) at the inlet of the discharge pipe (9) is C, and the density of the mixture in the combustion chamber (5) at the inlet of the discharge pipe (9) is D, then the purification efficiency in the combustion chamber (5) is: Among them, 99.7%η≥99.5%, thereby achieving control of the flow rate of the incoming gas according to the gas that has been processed by the combustion chamber (5), preventing the purification efficiency from decreasing due to excessive incoming gas, and maintaining the purification efficiency within an ideal range.

9. A regenerative combustion device for treating waste and wastewater according to claim 1, characterized in that: A plurality of burners (4) for generating high-temperature, oxidized exhaust gas are arranged in the combustion chamber (5); the burners (4) are respectively connected to one end of a fuel feed pipe (701) and an air intake pipe (801); the other end of the fuel feed pipe is connected to a fuel storage device (7); and the other end of the air intake pipe (801) is connected to an air compressor (8).

10. A regenerative combustion device for treating waste and wastewater according to claim 9, characterized in that: The pressure of the air in the air inlet pipe (801) is 6 to 10 bar.

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