Anaerobic treatment device and method for resource utilization of rural domestic sewage

Abstract

The invention discloses an anaerobic treatment device and method for resource utilization of rural domestic sewage, and relates to the technical field of biological anaerobic treatment equipment, in particular to an anaerobic treatment device for resource utilization of rural domestic sewage, comprising a tank body, an anaerobic treatment mechanism and a negative pressure mechanism, wherein the anaerobic treatment mechanism comprises a spiral guide spiral plate welded on the inner surface of an anaerobic tank, a biological attachment bed for anaerobic attachment is installed in a hole on the surface of the guide spiral plate; a negative pressure mechanism, wherein the negative pressure mechanism comprises a negative pressure air pump for exhaust installed at the upper end of the anaerobic tank, and a pressure controller for pressure monitoring is also installed at the upper end of the anaerobic tank; the invention uses an anaerobic treatment device composed of a tank body, an anaerobic treatment mechanism and a negative pressure mechanism, so that the negative pressure mechanism forms a negative pressure in the tank body, thereby facilitating anaerobic organisms to attach to the anaerobic treatment mechanism in the anaerobic tank to treat rural domestic sewage, so that the rural domestic sewage can be resource utilized after anaerobic treatment.

Description

Technical Field

[0001] The invention relates to the technical field of biological anaerobic treatment equipment, and in particular to an anaerobic treatment device and method for resource utilization of rural domestic sewage. Background Art

[0002] Resource utilization of rural domestic sewage is an important technology in environmental engineering and energy engineering. Anaerobic treatment of rural domestic sewage is one of the powerful treatment methods for organic wastewater. In the past, it was mostly used for the treatment of sludge, organic waste and some high-concentration organic wastewater in sewage treatment plants. In terms of building form, ordinary digesters were mainly used. Due to the disadvantages of long hydraulic retention time and low organic load, its application in wastewater treatment was limited for a long time. The holding capacity of activated sludge in the anaerobic reactor was greatly increased, which greatly shortened the treatment time and improved the efficiency.

[0003] However, when the anaerobic tower is used to treat the sludge inside the sewage, the sludge accumulates at the bottom of the anaerobic tower due to the increased treatment time, and the sludge needs to be cleaned many times. The efficiency and effect of the cleaning are not very ideal. At the same time, more sludge is not conducive to increasing the contact between anaerobic organisms and sewage, resulting in the problem of low efficiency of rural domestic sewage treatment.

[0004] Based on this, an anaerobic treatment device with an anaerobic treatment mechanism for resource utilization of rural domestic sewage to which anaerobic organisms can attach is designed to improve the efficiency of anaerobic organisms in treating rural domestic sewage. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides the following technical solutions: an anaerobic treatment device for resource utilization of rural domestic sewage, comprising:

[0006] A tank body, the tank body comprising a plurality of anaerobic tanks distributed at equal intervals, and a drainage pipe installed between two adjacent anaerobic tanks, a liquid inlet pipe for liquid inlet is installed on the lower end side surface of the anaerobic tank located at the front of the tank body, a liquid outlet pipe for liquid discharge is installed on the upper end side surface of the anaerobic tank located at the rear of the tank body, a filter element is installed in the liquid outlet pipe, a slag discharge mechanism is also provided at the lower end of the anaerobic tank, and a water quality observation sampling mechanism for sampling is also provided on the side surface of the anaerobic tank;

[0007] The anaerobic treatment mechanism comprises a spiral guide plate welded on the inner surface of the anaerobic tank, and a biological attachment bed for anaerobic attachment is installed in the holes on the surface of the guide plate;

[0008] The negative pressure mechanism comprises a negative pressure air pump for exhausting air installed at the upper end of the anaerobic tank, and a pressure controller for pressure monitoring is also installed at the upper end of the anaerobic tank, and the pressure controller is electrically connected to the negative pressure air pump.

[0009] As an improvement of the above technical solution, the biological attachment bed includes a rubber column arranged on the surface of the guide spiral plate, and a silicone strip bonded and fixed to the edge of the rubber column. An iron rod is also fixed in the hole opened on the surface of the guide spiral plate. Both ends of the iron rod are inserted into the holes opened at the ends of the rubber column. A magnet fixed to the iron rod by magnetic attraction is also fixed in the hole opened at the ends of the rubber column. The biological attachment bed installed on the surface of the guide spiral plate is distributed in a spiral array.

[0010] As an improvement of the above technical solution, the pressure controller includes a control module installed on the upper end of the anaerobic tank, a pressure probe arranged at the monitoring end of the control module extends into the interior of the anaerobic tank, and a pressure gauge is also installed on the control module.

[0011] As an improvement of the above technical solution, the water quality observation and sampling mechanism includes a transparent observation tube installed in the middle of the anaerobic tank for observing water quality, and an inspection window for sampling is provided in the middle of the transparent observation tube.

[0012] As an improvement of the above technical solution, the inspection window includes a window body fixedly mounted on a transparent observation tube, and a water-permeable plate arranged at the connection between the window body and the transparent observation tube, the surface of the water-permeable plate is provided with water-permeable holes, a limiting column is movably installed in the hole opened in the middle of the water-permeable plate, a sealing plate for sealing the open end of the window body is fixed to the end of the limiting column, a spring is connected to the outer sleeve of the limiting column, and the two ends of the spring are respectively fixed between the water-permeable plate and the sealing plate.

[0013] As an improvement of the above technical solution, the slag discharge mechanism includes a slag discharge pipe installed at the lower end of the anaerobic tank, a slag collecting pipe is installed at the end of the slag discharge pipe, and a valve for slag discharge is installed on the slag discharge pipe.

[0014] As an improvement of the above technical solution, a support frame is welded to the lower end of the anaerobic tank for support, and the support frame is also welded to the liquid inlet pipe.

[0015] Another technical solution is provided: an anaerobic treatment method for resource utilization of rural domestic sewage, comprising the following steps:

[0016] Step 1: anaerobic bacteria cultivation;

[0017] Step 2, anaerobic sewage treatment: sewage injection; parameter setting; sewage discharge; slag discharge.

[0018] As an improvement of the above technical solution, in step one, the anaerobic bacteria cultivation includes the following raw materials: 20% pond sludge, 1% trypsin, 0.5% yeast extract, 0.5% sodium chloride, 5% kitchen leftovers, 0.04% cysteine, 0.5% hemin chloride, 72.46% meat extract, and the sealed anaerobic fermentation time is 20 hours.

[0019] As an improvement of the above technical solution, the parameter settings in step 2 include sewage injection of 5 L / s, the volume of the anaerobic tank is 10000 L, and the internal pressure of the anaerobic tank is 0.02-0.05 MPa.

[0020] Beneficial effects of the present invention:

[0021] 1. The anaerobic treatment device composed of a tank body, an anaerobic treatment mechanism and a negative pressure mechanism is convenient for the negative pressure mechanism to form a negative pressure in the tank body, so that the anaerobic organisms in the anaerobic tank are attached to the anaerobic treatment mechanism to treat rural domestic sewage, so that the rural domestic sewage can be recycled after anaerobic treatment; the tank body is composed of an anaerobic tank, a drainage pipe, a liquid outlet pipe, a slag discharge mechanism and a water quality observation and sampling mechanism, and the drainage pipes arranged between multiple adjacent anaerobic tanks are convenient for rural domestic sewage to flow through multiple anaerobic tanks in sequence through the drainage pipes for anaerobic treatment, and the liquid outlet pipe installed at the upper end of the anaerobic tank at the tail of the tank body is provided with a filter element, so that the sewage can flow out of the tank body through the liquid outlet pipe The anaerobic treatment mechanism is composed of a guide spiral plate and a biological attachment bed, and the guide spiral plate is spiral, thereby increasing the distribution of the biological attachment bed on the guide spiral plate, so that the spiral guide spiral plate can extend the path of the sewage in the anaerobic tank, thereby improving the efficiency of anaerobic treatment of rural sewage in the anaerobic tank; the negative pressure mechanism composed of a pressure controller and a negative pressure air pump is convenient for the pressure controller to monitor the air pressure on the top of the anaerobic tank, and the negative pressure air pump discharges the gas on the top of the anaerobic tank after being powered on, so as to maintain the negative pressure inside the anaerobic tank.

[0022] 2. Through the biological attachment bed composed of rubber columns, silicone strips, iron rods and magnets, the two ends of the iron rods installed in the holes opened on the surface of the guide spiral plate are fixed in the holes opened at the ends of the rubber columns through magnets, so as to facilitate the installation of the biological attachment bed on the guide spiral plate, and the silicone strips bonded and fixed on the edge of the rubber column facilitate anaerobic organisms to attach to the surface of the silicone strips to perform anaerobic treatment on the sewage.

[0023] 3. A water quality observation and sampling mechanism consisting of a transparent observation tube and an inspection window is used. The transparent observation tube is convenient for observing the water quality flowing into the anaerobic tank, and the inspection window is convenient for sampling sewage after connecting to an external pipeline. The inspection window is composed of a window body, a water-permeable plate, a water-permeable hole, a limit column, a sealing plate and a spring. The sealing plate seals the open end of the window body through the limit column and the spring, so that when an external object presses against the sealing plate, the sealing plate is separated from the open end of the window body, so that the sewage inside the transparent observation tube flows out through the window body, thereby realizing sewage sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 It is a partial cross-sectional structural diagram of the present invention;

[0026] Figure 3 It is a cross-sectional structural diagram of the anaerobic tank in the present invention;

[0027] Figure 4 for Figure 2 The enlarged structure diagram at A in the middle;

[0028] Figure 5 It is the structural diagram of the pressure controller in the present invention;

[0029] Figure 6 It is the structural diagram of the biological attachment bed in the present invention.

[0030] Figure numerals: 1. anaerobic tank; 2. guide spiral plate; 3. biological attachment bed; 31. rubber column; 32. silicone strip; 33. iron rod; 34. magnet; 4. pressure controller; 41. control module; 42. pressure gauge; 43. pressure probe; 5. negative pressure air pump; 6. support frame; 7. liquid inlet pipe; 8. drainage pipe; 9. liquid outlet pipe; 10. transparent observation tube; 11. inspection window; 111. window body; 112. water-permeable plate; 113. water-permeable hole; 114. limit column; 115. sealing plate; 116. spring; 12. slag discharge pipe; 13. slag collecting pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Embodiment 1

[0032] See also Figure 1-6 The present invention provides a technical solution: an anaerobic treatment device for resource utilization of rural domestic sewage, comprising: a tank body, an anaerobic treatment mechanism and a negative pressure mechanism, an anaerobic treatment device composed of the tank body, an anaerobic treatment mechanism and a negative pressure mechanism, so that the negative pressure mechanism forms a negative pressure in the tank body, thereby facilitating anaerobic organisms to attach to the anaerobic treatment mechanism in the anaerobic tank 1 to treat rural domestic sewage, so that the rural domestic sewage can be utilized as a resource after anaerobic treatment.

[0033] The tank body comprises a plurality of anaerobic tanks 1 distributed at equal intervals, and a drainage pipe 8 installed between two adjacent anaerobic tanks 1. A liquid inlet pipe 7 for liquid inlet is installed on the lower end side surface of the anaerobic tank 1 located at the front of the tank body, and a liquid outlet pipe 9 for liquid discharge is installed on the upper end side surface of the anaerobic tank 1 located at the rear of the tank body. A filter element is installed in the liquid outlet pipe 9. A slag discharge mechanism is also provided at the lower end of the anaerobic tank 1. A water quality observation sampling mechanism for sampling is also provided on the side surface of the anaerobic tank 1. The tank body consists of the anaerobic tank 1. , a drainage pipe 8, a liquid outlet pipe 9, a slag discharge mechanism and a water quality observation and sampling mechanism. The drainage pipe 8 arranged between the plurality of adjacent anaerobic tanks 1 facilitates the rural domestic sewage to flow through the plurality of anaerobic tanks 1 in sequence through the drainage pipe 8 for anaerobic treatment. The liquid outlet pipe 9 installed at the upper end of the anaerobic tank 1 at the tail of the tank body is provided with a filter element, which facilitates the sewage to be filtered before it flows out of the tank body through the liquid outlet pipe 9. The water quality observation and sampling mechanism facilitates the observation and sampling of water quality through the water quality observation and sampling mechanism.

[0034] The anaerobic treatment mechanism includes a spiral guide spiral plate 2 welded on the inner surface of an anaerobic tank 1, and a biological attachment bed 3 for anaerobic attachment is installed in a hole opened on the surface of the guide spiral plate 2; the anaerobic treatment mechanism is composed of the guide spiral plate 2 and the biological attachment bed 3, and the guide spiral plate 2 is spiral, thereby increasing the distribution of the biological attachment bed 3 on the guide spiral plate 2, making it convenient for the spiral guide spiral plate 2 to extend the path of the sewage in the anaerobic tank 1, thereby improving the efficiency of anaerobic treatment of the sewage in the anaerobic tank 1.

[0035] The negative pressure mechanism includes a negative pressure air pump 5 for exhausting gas installed at the upper end of the anaerobic tank 1. A pressure controller 4 for pressure monitoring is also installed at the upper end of the anaerobic tank 1, and the pressure controller 4 is electrically connected to the negative pressure air pump 5. The negative pressure mechanism composed of the pressure controller 4 and the negative pressure air pump 5 facilitates the pressure controller 4 to monitor the air pressure at the top of the anaerobic tank 1, and the negative pressure air pump 5 exhausts the gas at the top of the anaerobic tank 1 after being energized, so as to maintain the negative pressure inside the anaerobic tank 1.

[0036] Specifically, the biological attachment bed 3 includes a rubber column 31 arranged on the surface of the guide spiral plate 2, and a silicone strip 32 bonded and fixed to the edge of the rubber column 31. An iron rod 33 is also fixed in the hole opened on the surface of the guide spiral plate 2. Both ends of the iron rod 33 are inserted into the hole opened at the end of the rubber column 31. A magnet 34 magnetically fixed to the iron rod 33 is also fixed in the hole opened at the end of the rubber column 31. The biological attachment bed 3 installed on the surface of the guide spiral plate 2 is distributed in a spiral array.

[0037] In this embodiment, a biological attachment bed 3 composed of a rubber column 31, a silicone strip 32, an iron rod 33 and a magnet 34 is provided, and both ends of the iron rod 33 installed in the holes opened on the surface of the guide spiral plate 2 are fixed in the holes opened at the ends of the rubber column 31 by the magnet 34, thereby facilitating the installation of the biological attachment bed 3 on the guide spiral plate 2, and the silicone strip 32 bonded and fixed to the edge of the rubber column 31 facilitates anaerobic organisms to attach to the surface of the silicone strip 32 to perform anaerobically treatment on the sewage.

[0038] Specifically, the pressure controller 4 includes a control module 41 installed on the upper end of the anaerobic tank 1 , a pressure probe 43 provided at the monitoring end of the control module 41 extends into the interior of the anaerobic tank 1 , and a pressure gauge 42 is also installed on the control module 41 .

[0039] In this embodiment, the pressure controller 4 is convenient for monitoring the pressure inside the anaerobic tank 1 .

[0040] Specifically, the water quality observation and sampling mechanism includes a transparent observation tube 10 for observing water quality installed in the middle of the anaerobic tank 1, and an inspection window 11 for sampling is arranged in the middle of the transparent observation tube 10. The inspection window 11 includes a window body 111 fixedly installed on the transparent observation tube 10, and a water-permeable plate 112 arranged at the connection between the window body 111 and the transparent observation tube 10. A water-permeable hole 113 is opened on the surface of the water-permeable plate 112, and a limiting column 114 is movably installed in the hole opened in the middle of the water-permeable plate 112. A sealing plate 115 for sealing the open end of the window body 111 is fixed to the end of the limiting column 114, and a spring 116 is connected to the outer shell of the limiting column 114, and the two ends of the spring 116 are respectively fixed between the water-permeable plate 112 and the sealing plate 115.

[0041] In this embodiment, a water quality observation and sampling mechanism consisting of a transparent observation tube 10 and an inspection window 11 is provided, and the transparent observation tube 10 is convenient for observing the quality of water flowing into the anaerobic tank 1, and the inspection window 11 is convenient for sewage sampling after an external pipeline is connected, and the inspection window 11 is composed of a window 111, a water-permeable plate 112, a water-permeable hole 113, a limiting column 114, a sealing plate 115 and a spring 116, and the sealing plate 115 cooperates with the limiting column 114 and the spring 116 to seal the open end of the window 111, so that when a foreign object presses against the sealing plate 115, the sealing plate 115 is separated from the open end of the window 111, so that the sewage in the transparent observation tube 10 flows out through the window 111, thereby realizing sewage sampling.

[0042] Specifically, the slag discharge mechanism includes a slag discharge pipe 12 installed at the lower end of the anaerobic tank 1 , a slag collecting pipe 13 is installed at the end of the slag discharge pipe 12 , and a valve for slag discharge is installed on the slag discharge pipe 12 .

[0043] In this embodiment, the residue at the bottom of the anaerobic tank 1 is discharged through the slag discharge mechanism.

[0044] Specifically, a support frame 6 for supporting is welded to the lower end of the anaerobic tank 1 , and the support frame 6 is also welded to the liquid inlet pipe 7 .

[0045] In this embodiment, the support frame 6 is convenient for supporting the anaerobic tank 1 . Embodiment 2

[0046] See also Figure 1-6 The present invention provides another technical solution: an anaerobic treatment method for rural domestic sewage resource utilization, comprising the following steps:

[0047] Step 1: anaerobic bacteria cultivation;

[0048] Step 2, anaerobic sewage treatment: sewage injection; parameter setting; sewage discharge; slag discharge.

[0049] Specifically, in step one, the anaerobic bacteria cultivation includes the following raw materials: 20% pond sludge, 1% trypsin, 0.5% yeast extract, 0.5% sodium chloride, 5% kitchen leftovers, 0.04% cysteine, 0.5% hemin chloride, 72.46% meat extract, and the sealed anaerobic fermentation time is 20 hours.

[0050] Specifically, the parameter settings in step 2 include sewage injection of 5 L / s, the volume of the anaerobic tank 1 of 10000 L, and the internal pressure of the anaerobic tank 1 of 0.02-0.05 MPa.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An anaerobic treatment device for resource utilization of rural domestic sewage, characterized in that: include: A tank body, the tank body comprising a plurality of anaerobic tanks (1) distributed at equal intervals, and a drainage pipe (8) installed between two adjacent anaerobic tanks (1), a liquid inlet pipe (7) for inletting liquid is installed on the lower end side surface of the anaerobic tank (1) located at the front of the tank body, a liquid outlet pipe (9) for draining liquid is installed on the upper end side surface of the anaerobic tank (1) located at the rear of the tank body, a filter element is installed in the liquid outlet pipe (9), a slag discharge mechanism is also provided at the lower end of the anaerobic tank (1), and a water quality observation sampling mechanism for sampling is also provided on the side surface of the anaerobic tank (1); An anaerobic treatment mechanism, the anaerobic treatment mechanism comprising a spiral guide spiral plate (2) welded on the inner surface of an anaerobic tank (1), wherein a biological attachment bed (3) for anaerobic bacteria to attach is installed in a hole provided on the surface of the guide spiral plate (2); A negative pressure mechanism, the negative pressure mechanism comprising a negative pressure air pump (5) for exhausting gas installed at the upper end of the anaerobic tank (1), a pressure controller (4) for pressure monitoring also installed at the upper end of the anaerobic tank (1), and the pressure controller (4) is electrically connected to the negative pressure air pump (5); The biological attachment bed (3) comprises a rubber column (31) arranged on the surface of the guide spiral plate (2), and a silicone strip (32) bonded and fixed to the edge of the rubber column (31); an iron rod (33) is also fixed in the hole opened on the surface of the guide spiral plate (2); both ends of the iron rod (33) are inserted into the hole opened at the end of the rubber column (31); a magnet (34) fixed to the iron rod (33) by magnetic attraction is also fixed in the hole opened at the end of the rubber column (31); the biological attachment bed (3) installed on the surface of the guide spiral plate (2) is distributed in a spiral array; The pressure controller (4) comprises a control module (41) mounted on the upper end of the anaerobic tank (1), a pressure probe (43) arranged at the monitoring end of the control module (41) extending into the interior of the anaerobic tank (1), and a pressure gauge (42) is also mounted on the control module (41); The water quality observation and sampling mechanism comprises a transparent observation tube (10) installed in the middle of the anaerobic tank (1) for observing water quality, and an inspection window (11) for sampling is provided in the middle of the transparent observation tube (10).

2. The anaerobic treatment device for resource utilization of rural domestic sewage according to claim 1 is characterized by: The inspection window (11) comprises a window body (111) fixedly mounted on a transparent observation tube (10), and a water-permeable plate (112) arranged at the connection between the window body (111) and the transparent observation tube (10); a water-permeable hole (113) is provided on the surface of the water-permeable plate (112); a limit column (114) is movably installed in a hole provided in the middle of the water-permeable plate (112); a sealing plate (115) for sealing the open end of the window body (111) is fixed at the end of the limit column (114); a spring (116) is connected to the outer shell of the limit column (114), and the two ends of the spring (116) are respectively fixed between the water-permeable plate (112) and the sealing plate (115).

3. The anaerobic treatment device for resource utilization of rural domestic sewage according to claim 1 is characterized by: The slag discharge mechanism comprises a slag discharge pipe (12) installed at the lower end of the anaerobic tank (1), a slag collecting pipe (13) is installed at the end of the slag discharge pipe (12), and a valve for slag discharge is installed on the slag discharge pipe (12).

4. The anaerobic treatment device for resource utilization of rural domestic sewage according to claim 3 is characterized by: A support frame (6) for supporting is welded to the lower end of the anaerobic tank (1), and the support frame (6) is also welded to the liquid inlet pipe (7).

5. A method for treating rural domestic sewage using an anaerobic treatment device for resource utilization according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: anaerobic bacteria cultivation; Step 2, anaerobic sewage treatment: sewage injection; parameter setting; sewage discharge; slag discharge.

6. A processing method according to claim 5, characterized in that: In step one, the anaerobic bacteria culture includes the following raw materials: 20% pond sludge, 1% tryptone, 0.5% yeast extract, 0.5% sodium chloride, 5% kitchen leftovers, 0.04% cysteine, 0.5% hemin chloride, 72.46% meat extract, and the sealed anaerobic fermentation time is 20 hours.

7. A processing method according to claim 6, characterized in that: The parameter settings in step 2 include sewage injection of 5 L / s, the volume of the anaerobic tank (1) of 10,000 L, and the internal pressure of the anaerobic tank (1) of 0.02-0.05 MPa.

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