CN213596053U - Coagulation system of landfill leachate - Google Patents
Coagulation system of landfill leachate Download PDFInfo
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- CN213596053U CN213596053U CN202022109313.4U CN202022109313U CN213596053U CN 213596053 U CN213596053 U CN 213596053U CN 202022109313 U CN202022109313 U CN 202022109313U CN 213596053 U CN213596053 U CN 213596053U
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Abstract
The utility model discloses a coagulation system for leachate of a refuse sanitary landfill, which comprises a coagulation tank; the device is characterized in that the coagulation tank is connected with a vertical flow type air flotation tank and a vertical flow type sedimentation tank; and the coagulation tank is provided with a stirring device and a dosing device, the dosing device comprises a PAC dosing device and a PAM dosing device, and the coagulation tank controls the outlet water of the coagulation tank to be conveyed to the vertical flow type air flotation tank or the vertical flow type sedimentation tank through a valve switch. The coagulation tank is connected with the vertical flow sedimentation tank and the vertical flow air floatation tank, sewage firstly enters the coagulation tank and is uniformly stirred with a flocculating agent and a coagulant through a stirring device, and then the sewage can selectively enter the vertical flow sedimentation tank or the vertical flow air floatation tank for solid-liquid separation according to the specific situation of suspended matters in water, so that the treatment efficiency is improved, and the cost is reduced.
Description
Technical Field
The utility model relates to a landfill leachate handles technical field, especially relates to a system of congealing of rubbish health landfill filtration liquid.
Background
The landfill method is widely applied in China due to low treatment cost, but landfill leachate is inevitably generated in the landfill process and after the landfill is finished. The landfill leachate is high-concentration organic wastewater with complex components, contains various toxic and harmful substances, and has the characteristics of high COD (chemical oxygen demand), high ammonia nitrogen and high total nitrogen, wherein the COD concentration is as high as about 10000-20000 mg/L, and the ammonia nitrogen and total nitrogen concentration is as high as about 1500-2000 mg/L. If the treatment is improper, the pollution can be caused to water resources, surrounding soil and atmospheric environment, so that the health of human bodies is threatened, and the significance of sanitary landfill is lost. Therefore, properly treating the leachate generated in the landfill process, and eliminating the influence of the landfill leachate on the environment are the most important measures for preventing secondary pollution.
At present, biochemical treatment of landfill leachate is generally used for pretreatment and advanced treatment of the landfill leachate, and biological denitrification and carbon removal treatment is generally used as a main process due to low cost and good effect. However, the landfill leachate is special wastewater with complex components, high organic matter, high ammonia nitrogen and high salinity, and after ammonia nitrogen and organic matter are removed through the combined treatment of denitrification treatment and an MBR (membrane bioreactor), the landfill leachate still contains a large amount of inorganic matter, so that the treatment requirement of the landfill leachate cannot be met only through the combined treatment of the denitrification treatment and the MBR. A targeted pretreatment system needs to be designed, so that the sewage treatment effect is improved, and the sewage can be discharged to reach the standard.
Disclosure of Invention
To the problem that exists among the prior art, the utility model aims to provide a high efficiency, reliably get rid of the inorganic matter in the landfill leachate, do benefit to the rubbish health landfill leachate's that improves follow-up waste water treatment effect system that congeals of liquid.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
A system for coagulating percolate of a sanitary landfill of garbage comprises a coagulation tank; the device is characterized in that the coagulation tank is connected with a vertical flow type air flotation tank and a vertical flow type sedimentation tank; and the coagulation tank is provided with a stirring device and a dosing device, the dosing device comprises a PAC dosing device and a PAM dosing device, and the coagulation tank controls the outlet water of the coagulation tank to be conveyed to the vertical flow type air flotation tank or the vertical flow type sedimentation tank through a valve switch.
As a further illustration of the above scheme, the PAC dosing apparatus includes a PAC dosing tank, a PAC dosing pipe connecting the PAC dosing tank and the coagulation tank, and a PAC dosing pump provided on the PAC dosing pipe; PAM charge device includes PAM and adds the medicinal cupping, connects PAM add the medicinal cupping with PAM that thoughtlessly congeals the pond adds the pencil, and establishes PAM on the PAM adds the pencil adds the medicine pump.
As a further explanation of the above scheme, two support frames are arranged on the top of the coagulation tank, the stirring devices are arranged on both the support frames, the stirring shaft of the stirring device penetrates through the support frames and enters the coagulation tank, and the stirring shaft is provided with a stirring paddle.
As a further explanation of the above scheme, the vertical flow type air flotation tank comprises an air flotation tank body, a central guide cylinder arranged in the air flotation tank body, a bubble generator arranged at the bottom of the air flotation tank body and a slag scraping machine arranged at the top of the air flotation tank body; the bubble generator is connected with a dissolved air tank, and the dissolved air tank is connected with an air compressor through an air inlet pipe.
As a further explanation of the above scheme, the vertical flow type air flotation tank is connected with the coagulation tank through a vertical flow type air flotation tank water inlet pipe; the water inlet pipe of the vertical flow type air floatation tank is connected with the central guide cylinder, and an air floatation tank water inlet pump and an air floatation tank electromagnetic flow meter are arranged on the water inlet pipe of the vertical flow type air floatation tank.
As a further explanation of the above scheme, the slag scraper comprises a transmission motor, a speed reducer and a transmission plate connected with a transmission shaft of the transmission motor, and soft rubber for scraping slag is arranged at the bottom of the transmission plate; one side of the air flotation tank body is provided with a sludge tank matched with the soft rubber, and the sludge tank is connected with a sludge discharge pipe of the air flotation tank.
As a further explanation of the above scheme, a water collecting tank communicated with the air flotation tank body is arranged at the periphery of the air flotation tank body, and an air flotation tank water outlet pipe is arranged at the bottom of the water collecting tank.
As a further explanation of the above scheme, the vertical sedimentation tank comprises a cylinder body, a sedimentation tank central guide cylinder arranged in the cylinder body, a mud bucket arranged at the bottom of the cylinder body, and a water outlet groove arranged at the periphery of the top of the cylinder body; the bottom of the mud bucket is connected with a mud discharging pipe of a sedimentation tank, and the bottom of the water outlet groove is connected with a water outlet pipe of the sedimentation tank.
As a further explanation of the above scheme, the vertical sedimentation tank is connected with the coagulation tank through a vertical sedimentation tank water inlet pipe; the water inlet pipe of the vertical sedimentation tank is connected with the central guide flow cylinder of the sedimentation tank, and the bottom of the central guide flow cylinder of the sedimentation tank is provided with a sedimentation tank reflecting plate.
The utility model has the advantages that:
firstly, mainly aiming at the leachate of the aged domestic garbage landfill with unbalanced carbon-ammonia ratio, considering the aging and concentration of the leachate, and combining the comprehensive treatment problem of fresh leachate, mixed liquor of kitchen waste and other carbon sources, inorganic substances are efficiently and reliably removed through a coagulation system, and the subsequent wastewater treatment effect is improved; the coagulation tank is connected with the vertical flow sedimentation tank and the vertical flow air floatation tank, sewage firstly enters the coagulation tank and is uniformly stirred with a flocculating agent and a coagulant through a stirring device, and then the sewage can selectively enter the vertical flow sedimentation tank or the vertical flow air floatation tank for solid-liquid separation according to the specific situation of suspended matters in water, so that the treatment efficiency is improved, and the cost is reduced.
And the coagulation tank is connected with an accident tank, so that the sewage in the coagulation tank is emptied when the coagulation tank is maintained and cleaned conveniently, and the collected sewage is conveyed to the water inlet end of the treatment system again in the accident tank.
Drawings
Fig. 1 shows a flow chart of the coagulation system for leachate in a sanitary landfill site.
Fig. 2 is a plan view of the coagulation tank of the coagulation system for leachate in a refuse sanitary landfill.
Fig. 3 shows a cross-sectional view of 1-1 in fig. 2.
Fig. 4 is a schematic structural view of the vertical flow type air flotation tank of the coagulation system for leachate in the refuse sanitary landfill.
Fig. 5 is a plan view of the vertical air flotation tank of the coagulation system for leachate in a refuse sanitary landfill.
Fig. 6 is a schematic structural view of a slag scraping machine of a vertical flow type air flotation tank of a coagulation system of leachate in a refuse sanitary landfill.
Fig. 7 is a schematic structural view of the vertical sedimentation tank of the coagulation system for leachate in a refuse sanitary landfill.
Fig. 8 is a plan view of the vertical sedimentation tank of the coagulation system for leachate in a sanitary landfill site.
Description of reference numerals:
1: a coagulation tank, 2: vertical flow type air flotation tank, 3: vertical sedimentation tank, 4: a medicine adding device.
117: inlet tube, 201: vertical flow air supporting pond inlet tube, 202: vertical sedimentation tank inlet tube, 203: PAM dosing tube, 204: PAC dosing tube, 205: coagulation tank vent pipe, 206: support frame, 207: central draft tube, 208: bubble generator, 209: air flotation tank reflecting plate, 210: intake pipe, 211: sludge discharge pipe of air floatation tank, 212: water outlet pipe of air floatation tank, 213: dissolved air tank, 214: air flotation tank foot frame, 215: soft gum, 216: speed reducer frame, 217: sedimentation tank outlet pipe, 218: outlet tank, 219: sedimentation tank center draft tube, 220: sedimentation tank launching plate, 221: hopper, 222: sedimentation tank sludge discharge pipe, 223: sedimentation tank foot rest, 224: and (4) a cylinder body.
2S 01: stirrer, 2Y 01: electromagnetic flow meter, 3S 01: air flotation tank water inlet pump, 3S 02: slag scraper, 3S 03: air compressor, 3Y 01: air flotation cell electromagnetic flow meter, 4S 01: sedimentation tank water intake pump, 4Y 01: sedimentation tank electromagnetic flowmeter.
Detailed Description
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.
The following description will be further made in conjunction with the accompanying drawings of the specification, so that the technical solution and the advantages of the present invention are clearer and clearer. The embodiments described below are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the invention.
As shown in fig. 1, a coagulation system for leachate of a sanitary landfill site of garbage comprises a coagulation tank 1, and a vertical flow type air flotation tank 2 and a vertical flow type sedimentation tank 3 which are connected with the coagulation tank; the device comprises a coagulation tank 1, and is characterized in that a dosing device 4 and a stirring device are arranged on the coagulation tank 1, the dosing device 4 comprises a PAC dosing device and a PAM dosing device, the coagulation tank 1 is communicated with a vertical flow type air floatation tank 2 and a vertical flow type sedimentation tank 2 through a valve switch, the coagulation tank 1 is communicated with the vertical flow type air floatation tank 2 or the vertical flow type sedimentation tank 3 through a control valve switch, and the two can be communicated with only one of the vertical flow type air floatation tank 2 and the vertical flow type sedimentation. And (3) the sewage enters a coagulation tank, is uniformly stirred with a flocculating agent and a coagulant through a stirring device, and then is discharged into a vertical flow type air flotation tank or a vertical flow type sedimentation tank through valve switching control to remove sludge.
As shown in fig. 2 and 3, the coagulation tank 1 is connected with a dosing device 4, the dosing device 4 includes a PAC dosing pipe 204 and a PAM dosing pipe 203 which are connected to the coagulation tank, the PAC dosing pipe 204 is connected to a PAC dosing tank, the PAM dosing pipe 203 is connected to a PAM dosing tank, and both the PAC dosing pipe 204 and the PAM dosing pipe 203 are provided with dosing pumps; the PAC dosing pipe 204 and the PAM dosing pipe 203 extend into the coagulation tank along the top of the coagulation tank.
Two support frames 206 are arranged at the top of the coagulation tank 1, and a stirrer 2S01 is arranged on each support frame 206; and a stirring shaft of the stirrer penetrates through the support frame 206 and enters the coagulation tank, and a stirring paddle is arranged on the stirring shaft.
The coagulation tank 1 is connected with two coagulation tank emptying pipes 205; the coagulation tank is connected with a water inlet pipe 117 for water inlet, a vertical flow type air flotation tank water inlet pipe 201 for water outlet to the vertical flow type air flotation tank, and a vertical flow type sedimentation tank water inlet pipe 202 for water outlet to the vertical flow type sedimentation tank. An electromagnetic flow meter 2Y01 is arranged on the water inlet pipe 117. And the emptying pipe of the coagulation tank is connected with an accident tank. The accident pool consists of a reinforced concrete side wall and a reinforced concrete bottom plate; the top of the accident pool is provided with a grid cover plate, and the bottom of the accident pool is provided with a pump pit for accommodating a submersible sewage pump. And the water outlet pipe of the accident pool conveys the liquid in the accident pool to the water inlet front end of the refuse sanitary landfill leachate treatment system and then reenters the refuse sanitary landfill leachate treatment system. The water inlet pipe 117 and the coagulation tank vent pipe 205 are arranged at the bottom of the coagulation tank, and the water inlet pipe 117 and the coagulation tank vent pipe 205 are arranged at two ends of the coagulation tank.
Referring to fig. 4 to 6, the vertical flow type air flotation tank 2 includes a tank body, a central guide cylinder 207 disposed in the middle of the tank body, a bubble generator 208 disposed at the bottom of the tank body, and a slag scraper 3S02 disposed at the top of the tank body; the bubble generator is connected with a dissolved air tank 213, the dissolved air tank 213 is connected with an air compressor 3S03 through an air inlet pipe 210, and the bottom of the central guide cylinder 207 is provided with an air flotation tank reflection plate 209.
The slag scraper 3S02 comprises a transmission motor, a speed reducer and a transmission plate connected with a transmission shaft of the transmission motor, and soft rubber 215 is arranged at the bottom of the transmission plate; one side of the air flotation tank body is provided with a sludge tank matched with the soft rubber 215, and the sludge tank is connected with a sludge discharge pipe of the air flotation tank. The transmission motor and the speed reducer are fixedly arranged at the top of the pool body through a speed reducer rack 216. The micro-bubbles released by the bubble generator are adhered to flocs in the sewage to form an air floating body with specific gravity smaller than that of the water, the air floating body rises to the water surface to be condensed into scum, and the scum is scraped into a sludge tank through a scum scraper and then is discharged through a sludge pipe of the floatation tank.
The water inlet pipe 201 of the vertical flow type air floatation tank is connected with the central guide cylinder 207; an air floatation tank water inlet pump 3S01 and an air floatation tank electromagnetic flow meter 3Y01 are arranged on the vertical air floatation tank water inlet pipe 201. The periphery of the air flotation tank body is provided with a water collecting tank communicated with the air flotation tank body, and the bottom of the water collecting tank is provided with an air flotation tank water outlet pipe 212.
The air flotation tank body is fixedly arranged on the ground through an air flotation tank foot rest 214. The dissolved air tank 213 is fixedly arranged on one side of the air flotation tank body through screws.
Referring to fig. 7 and 8, the vertical sedimentation tank includes a cylinder 224, a sedimentation tank central draft tube 219 arranged in the cylinder 224, a mud bucket 221 arranged at the bottom of the cylinder, and a water outlet tank 218 arranged at the periphery of the top of the cylinder; the bottom of the sedimentation tank central guide shell 219 is connected with a sedimentation tank reflection plate 220, the bottom of the mud bucket 221 is provided with a sedimentation tank mud pipe 222, and the water outlet groove 218 is provided with a sedimentation tank water outlet pipe 217. A sedimentation tank water inlet pump 4S01 and a sedimentation tank electromagnetic flowmeter 4Y01 are arranged on the vertical sedimentation tank water inlet pipe 202.
The barrel 224 is fixedly arranged on the ground through three sedimentation tank foot rests 223, and the three sedimentation tank foot rests 223 are uniformly arranged on the periphery of the barrel 224.
The sludge discharge pipe 211 of the air floatation tank and the sludge discharge pipe 222 of the sedimentation tank are connected with filter pressing equipment; the filter pressing equipment comprises a plate-and-frame filter press and a sludge storage tank connected with the plate-and-frame filter press, and the sludge discharge pipe of the air floatation tank and the sludge discharge pipe of the sedimentation tank are connected with the sludge storage tank. And carrying out filter pressing on the sludge by a plate-and-frame filter press to obtain a sludge cake, and then conveying the sludge cake to a designated area for landfill.
The tank body and the cylinder body are welded by SS304 stainless steel plates, and the air flotation tank foot rest 214 and the sedimentation tank foot rest 223 are manufactured by angle steel.
It will be understood by those skilled in the art from the foregoing description of the structure and principles that the present invention is not limited to the specific embodiments described above, and that modifications and substitutions based on the known art are intended to fall within the scope of the invention, which is defined by the claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.
The utility model discloses in, PAC is PolyAluminium Chloride's abbreviation, and PAM is Polyacrylamide's abbreviation.
Claims (9)
1. A system for coagulating percolate of a sanitary landfill of garbage comprises a coagulation tank; the device is characterized in that the coagulation tank is connected with a vertical flow type air flotation tank and a vertical flow type sedimentation tank; and the coagulation tank is provided with a stirring device and a dosing device, the dosing device comprises a PAC dosing device and a PAM dosing device, and the coagulation tank controls the outlet water of the coagulation tank to be conveyed to the vertical flow type air flotation tank or the vertical flow type sedimentation tank through a valve switch.
2. The coagulation system of landfill leachate of claim 1, wherein the PAC dosing apparatus comprises a PAC dosing tank, a PAC dosing pipe connecting the PAC dosing tank and the coagulation basin, and a PAC dosing pump provided on the PAC dosing pipe; PAM charge device includes PAM and adds the medicinal cupping, connects PAM add the medicinal cupping with PAM that thoughtlessly congeals the pond adds the pencil, and establishes PAM on the PAM adds the pencil adds the medicine pump.
3. The system of claim 1, wherein two supporting frames are disposed on the top of the coagulation basin, the stirring device is disposed on both of the supporting frames, the stirring shaft of the stirring device passes through the supporting frames and enters the coagulation basin, and the stirring shaft is provided with a stirring paddle.
4. The system of claim 1, wherein the vertical air flotation tank comprises an air flotation tank body, a central draft tube disposed in the air flotation tank body, a bubble generator disposed at the bottom of the air flotation tank body, and a slag scraper disposed at the top of the air flotation tank body; the bubble generator is connected with a dissolved air tank, and the dissolved air tank is connected with an air compressor through an air inlet pipe.
5. The coagulation system for leachate of sanitary landfill site of garbage according to claim 4, wherein the vertical flow flotation tank is connected with the coagulation tank through a water inlet pipe of the vertical flow flotation tank; the water inlet pipe of the vertical flow type air floatation tank is connected with the central guide cylinder, and an air floatation tank water inlet pump and an air floatation tank electromagnetic flow meter are arranged on the water inlet pipe of the vertical flow type air floatation tank.
6. The coagulation system for leachate of sanitary landfill of garbage according to claim 4, wherein the slag scraper comprises a transmission motor, a speed reducer and a transmission plate connected with a transmission shaft of the transmission motor, and soft glue for scraping slag is arranged at the bottom of the transmission plate; one side of the air flotation tank body is provided with a sludge tank matched with the soft rubber, and the sludge tank is connected with a sludge discharge pipe of the air flotation tank.
7. The system of claim 4, wherein the air flotation tank body is provided with a water collection tank at the periphery thereof, and the water collection tank is communicated with the air flotation tank body, and the water collection tank is provided with an air flotation tank water outlet pipe at the bottom thereof.
8. The coagulation system for leachate of sanitary landfill of garbage according to claim 1, wherein the vertical sedimentation tank comprises a cylinder, a central draft tube of the sedimentation tank arranged in the cylinder, a mud bucket arranged at the bottom of the cylinder, and a water outlet groove arranged at the periphery of the top of the cylinder; the bottom of the mud bucket is connected with a mud discharging pipe of a sedimentation tank, and the bottom of the water outlet groove is connected with a water outlet pipe of the sedimentation tank.
9. The coagulation system for leachate of sanitary landfill site of garbage according to claim 8, wherein the vertical sedimentation tank is connected with the coagulation tank through a water inlet pipe of the vertical sedimentation tank; the water inlet pipe of the vertical sedimentation tank is connected with the central guide flow cylinder of the sedimentation tank, and the bottom of the central guide flow cylinder of the sedimentation tank is provided with a sedimentation tank reflecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022109313.4U CN213596053U (en) | 2020-09-23 | 2020-09-23 | Coagulation system of landfill leachate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022109313.4U CN213596053U (en) | 2020-09-23 | 2020-09-23 | Coagulation system of landfill leachate |
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| CN213596053U true CN213596053U (en) | 2021-07-02 |
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| CN202022109313.4U Active CN213596053U (en) | 2020-09-23 | 2020-09-23 | Coagulation system of landfill leachate |
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| CN (1) | CN213596053U (en) |
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