CN210814082U - Desanding and descaling device in landfill leachate anaerobic treatment system - Google Patents

Desanding and descaling device in landfill leachate anaerobic treatment system Download PDF

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Publication number
CN210814082U
CN210814082U CN201921424475.8U CN201921424475U CN210814082U CN 210814082 U CN210814082 U CN 210814082U CN 201921424475 U CN201921424475 U CN 201921424475U CN 210814082 U CN210814082 U CN 210814082U
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sand
scale
water
water inlet
treatment system
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刘超
史昕龙
安淼
王声东
陈善平
邰俊
张瑞娜
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Ruoshui Shanghai Environmental Technology Co ltd
Shanghai Environmental Sanitation Engineering Design Institute Co ltd
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Ruoshui Shanghai Environmental Technology Co ltd
Shanghai Environmental Sanitation Engineering Design Institute Co ltd
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Abstract

The utility model relates to a degritting scale removal device among landfill leachate anaerobic treatment system, wherein: the water inlet flow guide part is connected with a water inlet pipe section provided with a hydraulic sand washing mixer; the sand-water separation part is provided with a rotational flow paddle type stirrer; the effluent collecting part is provided with an effluent triangular weir and an effluent annular collecting tank; the sand scale discharge part is provided with a screw press conveyor and a sand-water separation discharge pipe. The water flow enters into the circular cylinder and the conical cylinder for hydraulic cyclone sand removal, and the sand scale settles and is gathered into the sand scale collecting hopper under the action of the cyclone paddle type stirrer. The water flow flows upwards through the diversion inclined plate or the inclined pipe, and the ascending effluent is discharged out of the system through the clear liquid outlet pipe after being collected. The sand and scale are conveyed and lifted by the screw press conveyor, pressed and dehydrated, and fine sand and scale blocks are discharged out of the system. The utility model discloses collect sand washing, sand setting and sand-water separation functional design into integrated equipment, realize that filtration liquid anaerobic treatment system does not shut down and clears up and high-efficient steady operation.

Description

Desanding and descaling device in landfill leachate anaerobic treatment system
Technical Field
The utility model relates to a landfill leachate treatment technical field and relevant waste water treatment equipment field especially relate to the sand discharging of domestic waste incineration factory filtration liquid anaerobic treatment system and the desliming scale removing device of the inorganic deposit of discharge.
Background
At present, the garbage classification and collection system in China is not sound, and domestic garbage is easy to mix into inorganic garbage such as fine sand generated by road cleaning; the landfill leachate itself contains high inorganic salts, and these inorganic substances will eventually enter the landfill leachate treatment system. The waste leachate generated by domestic waste incineration plants in China is generally treated by an anaerobic and nitrification and denitrification membrane bioreactor matched with a corresponding subsequent advanced treatment process, and the treated effluent meets corresponding discharge standards. Because the hydraulic retention time and the sludge retention time of the anaerobic treatment system in the flow are both longer, fine sand is easy to accumulate in the system, and the reactor and the pipeline are blocked. On the other hand, the pH value in the anaerobic treatment system is generally alkaline, the calcium and magnesium ion concentration in the landfill leachate is extremely high, inorganic sediments are easily formed, scaling of equipment and blockage of pipelines are caused, and the normal operation of the system is not favorable.
Therefore, the landfill leachate needs to discharge solids such as fine sand, formed inorganic scale deposit and the like in the anaerobic system out of the system in time. The conventional method for removing sand and scale in the anaerobic system is to dredge and replace the anaerobic system after the anaerobic system is stopped and emptied, so that the system is easy to restart and run for too long time, and the requirement of the treatment system on uninterrupted operation cannot be met.
At present, the other treatment method adopts sand setting and sand removing methods in the traditional sewage treatment process, most of the traditional methods adopt a sand setting tank, a sand-water separator and the like, but the equipment of the traditional sewage treatment process is directly applied to a landfill leachate anaerobic treatment system for removing sand and scale, and the following defects exist:
1. the inorganic solids in the anaerobic system have small particle sizes and cannot be effectively removed by the traditional method.
2. A large amount of anaerobic sludge adheres to the surfaces of fine sand and inorganic solid dirt in an anaerobic system, the sludge on the solid surface is difficult to clean by using a traditional method, and the directly discharged fine sand and inorganic matters contain sludge, so that secondary environmental pollution and serious odor are easily caused, and the sludge loss of the anaerobic system is easily caused.
3. The traditional sewage treatment process mostly adopts a sand setting and sand removing split type design, namely, a sand setting device and a sand-water separation device are separately arranged, and the occupied area is large.
4. The traditional sewage treatment process has the disadvantages of large quantity of sand washing, sand setting and sand-water separation configured equipment, high failure rate and easy blockage after long-term operation of a sand extracting device.
In view of the above, those skilled in the art have made an effort to develop a device for discharging sand and inorganic deposits, which can maintain the leachate anaerobic treatment system to be empty without shutdown, can efficiently remove fine sand and scale blocks, and can realize efficient and stable operation of the leachate anaerobic treatment system, so as to solve the problems of the above treatment methods.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a degritting scale removal device among landfill leachate anaerobic treatment system, to wash sand, sand setting and sand-water separation functional design set become integrated equipment, it is empty to aim at can realizing keeping filtration liquid anaerobic treatment system not to stop the transport, realize that the high efficiency of fine sand and dirt piece is got rid of, realize filtration liquid anaerobic treatment system's high-efficient steady operation, the long-term operation accumulation fine sand of current filtration liquid anaerobic treatment system and inorganic dirt piece have been solved, lead to easily stopping up the siltation, reduce the treatment efficiency, shorten anaerobic treatment system's life scheduling problem, fine practical application is worth.
The technical solution of the utility model is as follows:
a sand and scale removing device in a landfill leachate anaerobic treatment system comprises a frame, a hydraulic sand washing mixer, a water inlet flow guide part, a sand-water separation part, a water outlet collection part, a sand scale discharge part and a connecting pipeline;
the water inlet flow guide part is a circular cylinder, the circular cylinder is arranged on the rack, the water inlet flow guide part is connected with the water inlet pipe section, and the water inlet pipe section is provided with a hydraulic sand washing mixer; the middle part in the circular cylinder of the water inlet diversion part is provided with a diversion inclined plate or an inclined pipe;
the sand-water separation part is a conical barrel, the circular barrel part of the conical barrel is arranged below the water inlet flow guide part and is connected with the bottom of the circular barrel, the top of the sand-water separation part is provided with a rotational flow paddle type stirrer, the rotational flow paddle type stirrer consists of a downward vertical shaft with a spiral line body and a horizontal shaft, the horizontal shaft is arranged at the bottom end of the downward vertical shaft, a plurality of inclined blades are uniformly distributed on the horizontal shaft, the horizontal shaft is positioned in the middle of the conical barrel of the sand-water separation part, and a sand scale collection hopper and a sand setting separation control valve are arranged at the outlet at the bottom of the conical barrel;
the outlet water collecting part is arranged above the sand-water separating part, the outlet water collecting part is provided with an outlet water triangular weir and an outlet water annular collecting tank, the outlet water triangular weir is arranged at the top of the circular cylinder of the inlet water guide part and is arranged above the flow guide inclined plate or inclined pipe, the outlet water annular collecting tank is arranged on the outer ring of the circular cylinder and is connected with a clear liquid outlet pipe, the outlet water which is guided by the flow guide inclined plate or inclined pipe and rises overflows through the outlet water triangular weir, flows into the outlet water annular collecting tank and is discharged out of the system through the clear liquid outlet pipe to enter the inlet water or circulation pipeline of the anaerobic leachate treatment system;
the sand and scale discharging part is arranged below the sand and scale collecting hopper at the outlet of the conical cylinder body of the sand and water separating part, the sand and scale discharging part is provided with a screw press conveyor and a sand and water separating and discharging pipe, the screw press conveyor is installed in an inclined manner in a sealing manner, the power part of the screw press conveyor is positioned on the ground, the conveying part of the screw press conveyor extends upwards in an inclined manner, and the outlet part of the screw press conveyor is positioned at the top of the upper part; the spiral squeezing conveyor is provided with a spiral emptying valve, a sand and scale separation liquid level control valve and a sensor positioned at the outlet part of the spiral squeezing conveyor, after a sand and scale collecting hopper at the bottom of the sand and water separation part collects fine sand and scale blocks, the sensor of the sand and scale discharge part senses that no sand and scale blocks fall at the outlet part of the spiral squeezing conveyor, the spiral emptying valve, the sand and scale separation control valve and the sand and scale separation liquid level control valve are operated, the sand and scale are conveyed and lifted by an inclined spiral body of the spiral squeezing conveyor, squeezed and dewatered, the fine sand and scale blocks are discharged out of the system, and the discharged water is connected into a water inlet or a circulation pipeline of the leachate anaerobic treatment system through a sand and water separation discharge pipe.
The hydraulic sand washing mixer is provided with double Y-shaped flow guide devices which are connected in series.
The hydraulic sand washing mixer is provided with a front valve and a rear valve respectively at the front and the rear of the arrangement position of the water inlet pipe section.
And a middle position water outlet pipe is arranged on the conical cylinder of the sand-water separation part, a middle position air release valve is arranged on the middle position water outlet pipe, and the middle position water outlet pipe is connected with a clear liquid water outlet pipe.
The sand and scale removing device is provided with a programmable control device in a matching way, synchronously controls the on and off of the sand setting separation control valve, the spiral emptying valve and the sand and scale separation liquid level control valve, and the operation of the spiral squeezing conveyor, and realizes the sequencing batch automatic operation of the sand and scale discharge part.
The circular cylinder of the water inlet diversion part is internally provided with a diversion plate, the distance between the diversion plate and the circular cylinder is 5-15 mm, and the diversion length of the diversion plate is 0.3-0.5 times of the cylinder diameter.
The angle of the connection between the circular cylinder of the water inlet diversion part and the conical cylinder of the sand-water separation part is 15-30 degrees.
The height of the diversion inclined plate or inclined pipe area of the water inlet diversion part is 0.6-1.0 m, and the installation inclination angle is 60-75 degrees.
According to the utility model discloses a degritting scale removal device among landfill leachate anaerobic treatment system assembles into integrated equipment with sand washing, sand setting and sand-water separation functional design, can realize keeping filtration liquid anaerobic treatment system and do not stop the clear air, realizes that the high efficiency of fine sand and dirt piece is got rid of, realizes filtration liquid anaerobic treatment system's high-efficient steady operation.
By adopting the sand and scale removing device in the garbage leachate anaerobic treatment system, the integration of sand washing, sand setting and sand removing functions can be realized, and the device has the advantages of simple structure, reasonable design, occupied area saving, convenient operation and use, low operation and maintenance cost and the like; the stable desanding and descaling of a leachate anaerobic treatment system can be realized, and the risk of anaerobic sludge loss is avoided; the operating efficiency and the service life of the anaerobic treatment system are improved.
Adopt the utility model discloses a degritting scaling device can produce higher effect of getting rid of to the fine sand and the dirt piece that accumulate after the long-time operation of filtration liquid anaerobic treatment system, can get rid of the fine sand that the particle diameter is greater than 0.2mm in the anaerobic system. The device realizes the continuous operation of effluent of cyclone desanding and descaling, and the sequencing batch operation of sand discharge improves the operation stability of the equipment. The monitoring device that this device can optimize set up can realize the automatic control operation through PLC, improves automatic operation work efficiency, has ensured fine treatment effect. The device can not cause sludge loss of an anaerobic system while realizing the functions of sand and scale removal.
Drawings
FIG. 1 is a schematic structural diagram of a desanding and descaling device in an anaerobic treatment system for landfill leachate of the present invention.
Reference numerals:
1 is a water inlet pipe section, 2 is a front valve, 3 is a hydraulic sand washing mixer, 4 is a rear valve, 5 is a water inlet flow guide part, 6 is a sand-water separation part, 7 is a rotational flow paddle type stirrer, 8 is a middle position emptying valve, 9 is a flow guide inclined plate or inclined pipe, 10 is a water outlet triangular weir, 11 is a water outlet collection part, 12 is a clear liquid outlet pipe, 13 is a sand setting separation control valve, 14 is a sand scale discharge part, 15 is a screw press conveyor, 16 is a screw emptying valve, 17 is a sand scale separation liquid level control valve, and 18 is a sand-water separation discharge pipe.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1, the utility model provides a degritting and scaling device in landfill leachate anaerobic treatment system, it mainly comprises frame, water conservancy sand washing blender 3, water inlet water conservancy diversion portion 5, sand-water separation portion 6, play water collection portion 11, sand dirt discharge portion 14 and connecting tube.
The water inlet guide part 5 is a circular cylinder which is arranged on the frame. The water inlet flow guide part 5 is connected with the water inlet pipe section 1, and the water inlet pipe section 1 is provided with the hydraulic sand washing mixer 3 through a flange. The hydraulic sand washing mixer 3 is provided with a double-Y-shaped flow guide device which is connected in series, the ratio of the length of a Y-shaped flow guide body to the pipe diameter of a water inlet pipe is 2: 1-2.5: 1, and the middle angle of the Y-shaped flow guide body is 30-45 degrees. The hydraulic sand washing mixer 3 is provided with a front valve 2 and a rear valve 4 at the front and rear positions of the arrangement position of the water inlet pipe section 1. The circular cylinder of the water inlet diversion part 5 is internally provided with a diversion plate, the distance between the diversion plate and the circular cylinder is 5-15 mm, and the diversion length of the diversion plate is 0.3-0.5 times of the cylinder diameter. The middle part in the circular cylinder of the water inlet diversion part 5 is provided with a diversion inclined plate or inclined pipe 9, the height of the diversion inclined plate or inclined pipe 9 area is 0.6-1.0 m, the installation inclination angle is 60-75 degrees, and the distance between the inclined plates or the pipe diameter is about 50-150 mm.
The sand-water separation part 6 is a conical cylinder, and the circular cylinder part of the conical cylinder is arranged below the water inlet guide part 5 and is connected with the bottom of the circular cylinder. The angle of the connection between the circular cylinder of the water inlet diversion part 5 and the conical cylinder of the sand-water separation part 6 is 15-30 degrees. A rotational flow paddle type stirrer 7 is installed at the top of the sand-water separation part 6. The cyclone paddle type stirrer 7 is composed of a downward hanging shaft with a spiral line body and a horizontal shaft, wherein the length of the downward hanging shaft is 3-5 m, the horizontal shaft is installed at the bottom end of the downward hanging shaft, and the horizontal shaft is located in the middle of a conical barrel of the sand-water separation part 6. A plurality of inclined blades are uniformly distributed on the horizontal shaft, the diameter of each blade is 0.95-0.98 times of the diameter of the bottom of the sand-water separation part 6, and the distance between the top end of each blade and the wall of the groove is determined according to the critical granularity of the material and is generally not less than 10 mm. And a sand and dirt collecting hopper and a sand setting separation control valve 13 are arranged at the outlet of the bottom of the conical cylinder body. A middle position water outlet pipe is arranged on the conical cylinder body of the sand-water separation part 6, a middle position air release valve 8 is arranged on the middle position water outlet pipe, and the middle position water outlet pipe is connected with a clear liquid water outlet pipe 12.
The effluent collecting section 11 is located above the sand-water separating section 6. The effluent collecting part 11 is provided with an effluent triangular weir 10 and an effluent annular collecting tank. The water outlet triangular weir 10 is arranged at the top of the circular cylinder of the water inlet flow guide part 5 and is positioned above the flow guide inclined plate or inclined pipe 9. The water outlet annular collecting tank is arranged on the outer ring of the round cylinder and is connected with a clear liquid outlet pipe 12. The effluent which is guided to rise by the diversion inclined plate or inclined pipe 9 overflows through the effluent triangular weir 10, flows into the effluent annular collecting tank, is discharged out of the system through the clear liquid outlet pipe 12, and enters the water inlet or circulation pipeline of the leachate anaerobic treatment system.
The sand and scale discharging part 14 is arranged below the sand and scale collecting hopper at the outlet of the conical cylinder of the sand-water separating part 6. The sand discharge section 14 is equipped with a screw press conveyor 15 and a sand-water separation discharge pipe 18. The screw press conveyor 15 is installed inclinedly in a sealed manner, the power part of the screw press conveyor 15 is located on the ground, the conveying part of the screw press conveyor 15 extends obliquely upward, and the outlet part of the screw press conveyor 15 is located on the top of the upper side. The screw press conveyor 15 is provided with a screw blow-down valve 16, a sand and dirt separation level control valve 17 and a sensor at the outlet portion of the screw press conveyor 15. After the sand and scale collecting hopper at the bottom of the sand and water separating part 6 collects fine sand and scale blocks, the sensor of the sand and scale discharging part 14 senses that no sand and scale blocks fall at the outlet part of the screw press conveyor 15, the screw emptying valve 16, the sand settling separation control valve 13 and the sand and scale separation liquid level control valve 17 are operated, sand and scale are conveyed and lifted through the inclined spiral body of the screw press conveyor 15, the fine sand and scale blocks are discharged out of the system, and meanwhile, drainage is connected into a water inlet or a circulation pipeline of the leachate anaerobic treatment system through the sand and water separating and discharging pipe 18.
The utility model discloses a supporting installation programmable control device of degritting scaling device among landfill leachate anaerobic treatment system, the switch of synchronous control sand setting separation control valve 13, spiral atmospheric valve 16 and sand and dirt separation liquid level control valve 17 to and the operation of screw press conveyer 15, realize the automatic operation of the preface batch formula of sand and dirt discharge portion 14.
As shown in figure 1, the utility model provides an implementation process of degritting and scaling device in landfill leachate anaerobic treatment system, which is as follows:
the water flow mixed with the mixture is discharged from a water outlet or a sludge outlet at the bottom of the anaerobic system and enters the water inlet pipe section 1 and the hydraulic sand washing mixer 3, the friction cleaning of the mixture is enhanced by utilizing the hydraulic turbulence effect in the hydraulic sand washing mixer 3, and the anaerobic sludge and organic matters adhered to the surface of the fine sand and scale block are removed.
The rivers behind the hydraulic sand washing blender 3 enter into the circular cylinder of the water inlet guiding part 5 of hydraulic cyclone desanding and the conical cylinder of the sand-water separation part 6 through the tangential entry, through the deflector groove in the cylinder body, let the rivers can flow along circular cylinder and conical cylinder and form hydraulic cyclone, the great fine sand of proportion and dirt piece subside under the action of gravity to gather in the sand dirt collecting hopper along the bottom ramp of sand-water separation part 6 under the effect of whirl paddle agitator 7.
Water flows upwards through a diversion inclined plate or an inclined pipe 9 arranged in the middle of the circular cylinder of the water inlet diversion part 5, and the sedimentation of fine sand or scale blocks is accelerated under the action of the diversion inclined plate or the inclined pipe 9, so that the effect of sand and scale removal is improved. The rising effluent overflows through an effluent triangular weir 10, enters an effluent annular collecting tank positioned at the outer ring of the circular cylinder, is discharged out of the system through a clear liquid outlet pipe 12 after being collected, and enters the water inlet or circulating pipeline of the leachate anaerobic treatment system.
After the sand and scale collecting hopper at the bottom of the sand-water separation part 6 collects fine sand and scale blocks, when no sand and scale blocks fall down, the operation of the screw press conveyor 15 is firstly closed, and the screw emptying valve 16 is opened for emptying and then closed through the inductor arranged at the outlet of the sand and scale discharge part 14. Then, the sand setting separation control valve 13 is opened to fill the deposited sand water and the scale block into the sand and scale discharge part 14, and then the sand setting separation control valve 13 is closed. And then the sand and scale separation liquid level control valve 17 is opened, and the screw part of the screw press conveyor 15 is closed after the water level is balanced. The screw press conveyor 15 is then started to perform the separation operation, and the operation is performed again after the discharge of the discharge port is not monitored. Finally, the fine sand and scale blocks are discharged out of the system through sealed oblique spiral conveying lifting and squeezing dewatering, and meanwhile, the discharged water is connected into a water inlet or circulating pipeline of a leachate anaerobic treatment system through a sand-water separation discharge pipe 18.
By adopting the sand and scale removing device in the garbage leachate anaerobic treatment system, the integration of sand washing, sand setting and sand removing functions can be realized, and the device has the advantages of simple structure, reasonable design, occupied area saving, convenient operation and use, low operation and maintenance cost and the like; the stable desanding and descaling of a leachate anaerobic treatment system can be realized, and the risk of anaerobic sludge loss is avoided; the operating efficiency and the service life of the anaerobic treatment system are improved.
Of course, those skilled in the art should recognize that the above-described embodiments are merely illustrative of the present invention and are not intended to be limiting, and that changes, modifications, etc. to the above-described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.

Claims (8)

1. The utility model provides a degritting scale removal device among landfill leachate anaerobic treatment system which characterized in that: the device comprises a frame, a hydraulic sand washing mixer (3), a water inlet flow guide part (5), a sand-water separation part (6), a water outlet collection part (11), a sand scale discharge part (14) and a connecting pipeline;
the water inlet flow guide part (5) is a circular cylinder, the circular cylinder is arranged on the rack, the water inlet flow guide part (5) is connected with the water inlet pipe section (1), and the water inlet pipe section (1) is provided with the hydraulic sand washing mixer (3); the middle part in the circular cylinder of the water inlet diversion part (5) is provided with a diversion inclined plate or an inclined pipe (9);
the sand-water separation part (6) is a conical barrel, the circular barrel part of the conical barrel is arranged below the water inlet guide part (5) and is connected with the bottom of the circular barrel, the top of the sand-water separation part (6) is provided with a rotational flow paddle type stirrer (7), the rotational flow paddle type stirrer (7) consists of a downward vertical shaft with a spiral line body and a horizontal shaft, the horizontal shaft is arranged at the bottom end of the downward vertical shaft, a plurality of inclined paddles are uniformly distributed on the horizontal shaft, the horizontal shaft is positioned in the middle of the conical barrel of the sand-water separation part (6), and a sand scale collection hopper and a sand setting separation control valve (13) are arranged at the outlet of the bottom of the conical barrel;
the device is characterized in that the effluent collecting part (11) is positioned above the sand-water separating part (6), the effluent collecting part (11) is provided with an effluent triangular weir (10) and an effluent annular collecting tank, the effluent triangular weir (10) is arranged at the top of the circular cylinder of the water inlet flow guiding part (5) and positioned above the flow guiding inclined plate or inclined pipe (9), the effluent annular collecting tank is arranged on the outer ring of the circular cylinder and connected with a clear liquid outlet pipe (12), effluent which is guided by the flow guiding inclined plate or inclined pipe (9) and rises overflows through the effluent triangular weir (10), flows into the effluent annular collecting tank and is discharged out of the system through the clear liquid outlet pipe (12) to enter a water inlet or circulating pipeline of the leachate anaerobic treatment system;
the sand and scale discharging part (14) is arranged below a sand and scale collecting hopper at the outlet of the conical barrel of the sand and water separating part (6), the sand and scale discharging part (14) is provided with a screw press conveyor (15) and a sand and water separating and discharging pipe (18), the screw press conveyor (15) is obliquely arranged in a sealing manner, the power part of the screw press conveyor (15) is positioned on the ground, the conveying part of the screw press conveyor (15) extends upwards in an inclined manner, and the outlet part of the screw press conveyor (15) is positioned at the top of the upper part; the spiral squeezing conveyor (15) is provided with a spiral emptying valve (16), a sand and scale separation liquid level control valve (17) and a sensor positioned at the outlet part of the spiral squeezing conveyor (15), when a sand and scale collecting hopper at the bottom of the sand and water separation part (6) collects fine sand and scale blocks, the sensor of the sand and scale discharge part (14) senses that no sand and scale blocks fall at the outlet part of the spiral squeezing conveyor (15), the spiral emptying valve (16), a sand setting separation control valve (13) and the sand and scale separation liquid level control valve (17) are operated, sand and scale are conveyed and lifted through an inclined spiral body of the spiral squeezing conveyor (15), squeezed and dehydrated, the fine sand and scale blocks are discharged out of the system, and drainage is connected into water inlet or circulation pipelines of the leachate anaerobic treatment system through a sand and water separation discharge pipe (18).
2. The device for removing sand and scale in the anaerobic treatment system of landfill leachate according to claim 1, wherein: the hydraulic sand washing mixer (3) is provided with double Y-shaped flow guide devices which are connected in series.
3. The device for removing sand and scale in the anaerobic treatment system of landfill leachate according to claim 1, wherein: the hydraulic sand washing mixer (3) is provided with a front valve (2) and a rear valve (4) at the front and rear positions of the arrangement position of the water inlet pipe section (1).
4. The device for removing sand and scale in the anaerobic treatment system of landfill leachate according to claim 1, wherein: a middle position water outlet pipe is arranged on the conical barrel of the sand-water separation part (6), a middle position emptying valve (8) is arranged on the middle position water outlet pipe, and the middle position water outlet pipe is connected with a clear liquid water outlet pipe (12).
5. The device for removing sand and scale in the anaerobic treatment system of landfill leachate according to claim 1, wherein: the sand and scale removing device is provided with a programmable control device in a matched manner, and synchronously controls the on and off of a sand setting separation control valve (13), a spiral emptying valve (16) and a sand and scale separation liquid level control valve (17) and the operation of a spiral squeezing conveyor (15), so that the sequencing batch automatic operation of a sand and scale discharge part (14) is realized.
6. The device for removing sand and scale in the anaerobic treatment system of landfill leachate according to claim 1, wherein: the circular cylinder of the water inlet diversion part (5) is internally provided with a diversion plate, the distance between the diversion plate and the circular cylinder is 5-15 mm, and the diversion length of the diversion plate is 0.3-0.5 times of the cylinder diameter.
7. The device for removing sand and scale in the anaerobic treatment system of landfill leachate according to claim 1, wherein: the angle of the connection between the circular cylinder of the water inlet diversion part (5) and the conical cylinder of the sand-water separation part (6) is 15-30 degrees.
8. The device for removing sand and scale in the anaerobic treatment system of landfill leachate according to claim 1, wherein: the height of the diversion inclined plate or inclined pipe (9) area of the water inlet diversion part (5) is 0.6-1.0 m, and the installation inclination angle is 60-75 degrees.
CN201921424475.8U 2019-08-29 2019-08-29 Desanding and descaling device in landfill leachate anaerobic treatment system Active CN210814082U (en)

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CN201921424475.8U CN210814082U (en) 2019-08-29 2019-08-29 Desanding and descaling device in landfill leachate anaerobic treatment system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114607018A (en) * 2022-05-12 2022-06-10 莱阳市春帆漆业有限责任公司 Garbage leachate treatment equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114607018A (en) * 2022-05-12 2022-06-10 莱阳市春帆漆业有限责任公司 Garbage leachate treatment equipment
CN114607018B (en) * 2022-05-12 2022-07-29 莱阳市春帆漆业有限责任公司 Garbage leachate treatment equipment

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