CN115321763A - Landfill leachate treatment system and solid-liquid separation device thereof - Google Patents
Landfill leachate treatment system and solid-liquid separation device thereof Download PDFInfo
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- CN115321763A CN115321763A CN202211237463.0A CN202211237463A CN115321763A CN 115321763 A CN115321763 A CN 115321763A CN 202211237463 A CN202211237463 A CN 202211237463A CN 115321763 A CN115321763 A CN 115321763A
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- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 238000000926 separation method Methods 0.000 title claims abstract description 18
- 238000004062 sedimentation Methods 0.000 claims abstract description 70
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 239000012528 membrane Substances 0.000 claims abstract description 14
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 241000207965 Acanthaceae Species 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 23
- 239000012535 impurity Substances 0.000 abstract description 17
- 230000001112 coagulating effect Effects 0.000 abstract description 16
- 239000010865 sewage Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 9
- 238000003911 water pollution Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 230000020477 pH reduction Effects 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 7
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- 229910052757 nitrogen Inorganic materials 0.000 description 3
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the technical field of sewage treatment, in particular to a solid-liquid separation device for landfill leachate treatment, which comprises a conveying hole belt, wherein a sedimentation tank box body is arranged below the conveying hole belt, an overflow flat cylinder penetrates through one side of the sedimentation tank box body, one end of the overflow flat cylinder extends into the conveying hole belt, a plurality of main U-shaped pipes which are uniformly distributed penetrate through the other side of the sedimentation tank box body, and one ends of the main U-shaped pipes extend between the conveying hole belt and the sedimentation tank box body. The invention also discloses a landfill leachate treatment system, the landfill leachate reaches the specified water pollution discharge concentration limit value after being treated, the sewage is circularly precipitated through the solid-liquid separation device, clear water flows away along the overflowing flat cylinder, sludge impurities are uniformly and flatly laid on the closed-loop filter membrane cloth, and the closed-loop filter membrane cloth is conveyed along with the conveying hole belt, so that the sludge impurities are smoothly conveyed to the collection device and efficiently collected by the collection device, and the stable development of a coagulating sedimentation process is ensured.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a landfill leachate treatment system and a solid-liquid separation device thereof.
Background
The landfill leachate treatment process in the prior art specifically comprises the steps that the landfill leachate automatically flows into a regulating tank through an original pipeline to be subjected to homogeneous and uniform regulation; the leachate enters a coagulating sedimentation treatment unit through a regulating reservoir lifting pump, and a coagulant and a flocculating agent are pumped into the coagulating sedimentation treatment unit to remove a large amount of pollutants such as suspended matters, heavy metals, total phosphorus and the like; the supernatant of the coagulating sedimentation automatically flows into an intermediate water tank, then the wastewater is pumped into a high-efficiency catalytic oxidation tower for oxidation pretreatment, and the biodegradability of the wastewater can be effectively improved through the combined action of a catalyst and an oxidant; the high-efficiency catalytic oxidation effluent automatically flows into a hydrolysis acidification tank, and residual refractory macromolecular organic matters in the leachate can be decomposed into micromolecular organic matters, so that the subsequent biochemical burden can be reduced; the effluent of the anaerobic sedimentation tank automatically flows into a two-stage A/O + MBR system, ammonia nitrogen is converted into nitrate under the action of nitrobacteria and denitrifying bacteria, nitrate nitrogen is converted into nitrogen, the aim of denitrification is fulfilled, most organic matters in the sewage are removed simultaneously, the effluent reaches the requirement of taking over, and the effluent is discharged into a sewage plant for further deepening treatment.
The coagulating sedimentation and the sludge generated by the biochemical system are discharged into a sludge concentration tank together for sedimentation, the supernatant automatically flows into a biochemical regulating tank, the concentrated sludge is pumped into a sludge dewatering room for dewatering treatment, the press filtrate automatically flows into the biochemical regulating tank, and the mud cake is transported outside.
After being treated, the landfill leachate can only reach the grade standard of 'water quality standard of sewage discharged into urban sewer' (CJ 343-2010), and is connected into a Qingshan sewage treatment plant, and the designed inlet water quality is shown in the following table:
according to the requirements of environmental protection and regulation in the Ministry of America and Zhen City, the landfill leachate after treatment must reach the limit value of water pollution emission concentration specified in the pollution control Standard of domestic refuse landfill (GB 16889-2008), and the prior art and the process cannot reach the new limit value of water pollution emission concentration. Through comparison tests, the invention provides an advanced treatment process of 'biochemical regulation + coagulating sedimentation + hydrolytic acidification + anaerobic sedimentation + secondary A/O + MBR + multi-element synergistic catalytic oxidation + activated carbon adsorption' in consideration of the condition of field equipment waste.
Disclosure of Invention
The invention aims to provide a landfill leachate treatment system and a solid-liquid separation device thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a landfill leachate handles solid-liquid separation equipment, includes the conveyer hole area, the below in conveyer hole area is provided with the sedimentation tank box, one side of sedimentation tank box is run through and is spilled over the flat section of thick bamboo, spills over in flat section of thick bamboo one end extends to the conveyer hole area, and the opposite side of sedimentation tank box runs through the main U type pipe that has a plurality of evenly distributed, the one end of main U type pipe extends to between conveyer hole area and the sedimentation tank box, and is provided with a plurality of evenly distributed's unit valve on the main U type pipe between conveyer hole area and the sedimentation tank box, the both ends position in conveyer hole area all is provided with the side frame, and two side frame opposite direction set up, the inside in conveyer hole area is covered with closed loop filter membrane cloth, and closed loop filter membrane cloth is fixed to adhere on the inner wall in conveyer hole area, runs through collection device in the conveyer hole area, and collection device fixes the one end at the sedimentation tank box, and the bottom both sides in conveyer hole area all are provided with the silt baffle, and the silt baffle is fixed on the sedimentation tank box.
The silt baffle includes interception board and a plurality of evenly distributed's of interception board one side fixed connection internal stay, and internal stay one end on the silt baffle is fixed on the sedimentation tank box, the side frame includes conveying roller, V type frame and limit wheel, and two side frame cooperations are propped up the conveyer hole area, make the conveyer hole area present flat hexagonal prism frame form, the both ends position of conveying roller all is connected with V type frame, V type frame is fixed on the sedimentation tank box, all is provided with two limit wheels on every V type frame, and wherein the middle part of V type frame is provided with a limit wheel, and the one end of V type frame is provided with another limit wheel, and the other end of V type frame is provided with the conveying roller, and the conveyer hole area is closed loop rubber area, and sets up a plurality of evenly distributed's through-hole on the rubber area.
The edge wheel comprises a T-shaped disk body and a short shaft fixed in the middle of the T-shaped disk body, the T-shaped disk body of the edge wheel props the edge of the inner wall of the conveying hole belt, the short shaft on the edge wheel is movably sleeved in a through hole formed in the V-shaped frame, the two ends of the conveying roller are respectively provided with the short shaft, the short shaft at the end part of the conveying roller is movably sleeved in the through hole formed in the V-shaped frame, and one corner section of the conveying hole belt is propped in the conveying roller.
The collecting device comprises a screw rod, a T-shaped sliding block, a mud pushing disc, a short plate, a sliding rail column, an L-shaped position control plate and a long J-shaped arc plate, wherein the L-shaped position control plate is fixed at both ends of the sliding rail column, the L-shaped position control plate is fixed on the outer wall of the sedimentation tank box body, the screw rod is distributed below the sliding rail column in parallel, the end part of the screw rod is movably sleeved in a through hole formed in the L-shaped position control plate, the screw rod penetrates through a threaded hole formed in the mud pushing disc, the T-shaped sliding block is fixed on one side of the mud pushing disc, the T-shaped sliding block is arranged in a T-shaped sliding groove formed in the sliding rail column in a matching manner, the long J-shaped arc plate is covered below the screw rod, and a plurality of uniformly distributed short plates are fixed between the long J-shaped arc plate and the sliding rail column.
The unit valve is including collecting shell, locating rack and integrated piece, one side fixedly connected with of main U type pipe collects the shell, collects the L type pipe that the shell includes funnel casing and funnel casing bottom intercommunication, collects L type pipe one end and main U type pipe intercommunication on the shell, and the funnel casing top of collecting the shell is fixed with the integrated piece, and the delivery port area is supported to the integrated piece upper end, is fixed with the locating rack on collecting the main U type pipe of shell one side, and the locating rack is fixed on the sedimentation tank box.
The integrated part includes horizontal fulcrum shaft, indulges fulcrum shaft, T type grillage, dish gear, pinion, turbofan, framed panel, first spring, guide post and braked wheel, set up the through-hole on the middle part plate body of gear, and the activity has cup jointed in the through-hole and indulges the fulcrum shaft, the one end fixedly connected with braked wheel of horizontal fulcrum shaft, braked wheel upper end shore delivery hole area, indulge the fulcrum shaft upper end through setting up two bevel gear realization to the diversion transmission of horizontal fulcrum shaft, horizontal fulcrum shaft activity cup joints in the through-hole of seting up on T type grillage, indulges the bottom fixedly connected with dish gear of fulcrum shaft, one side meshing of dish gear is connected with the pinion, pinion fixed cover is on the turbofan.
The turbofan includes a plurality of evenly distributed's that axis and well axle one end fixed ring established leaf plate, the pinion housing is epaxial in the turbofan, and the through-hole of seting up on T type grillage is cup jointed in the axis top activity of turbofan, the framed bent includes the diaphragm that drum and drum both sides are all connected, the drum fixed cover of framed bent is outside collecting the shell, the through-hole has all been fixed to have seted up at the both ends of framed bent, and the guide post has been run through in the through-hole activity, the cover has first spring on the guide post, the top and the T type grillage fixed connection of guide post, first spring-supported is between T type grillage and guide post, the turbofan sets up the apical opening position at the collection shell.
A landfill leachate treatment system comprises the following steps:
the method comprises the following steps: the leachate of the refuse landfill automatically flows into a collecting well through the original pipeline and then enters a regulating tank through a lift pump for carrying out homogeneous and uniform regulation;
step two: the leachate enters a coagulating sedimentation treatment unit through a regulating reservoir lifting pump, and a coagulant and a flocculating agent are pumped into the coagulating sedimentation treatment unit to remove a large amount of pollutants such as suspended matters, heavy metals, total phosphorus and the like; the supernatant of the coagulating sedimentation automatically flows into an intermediate water tank, then the wastewater is pumped into a hydrolysis acidification tank, and the effluent of the acidification tank automatically flows into an anaerobic sedimentation tank;
step three: the effluent of the anaerobic sedimentation tank automatically flows into a two-stage A/O + MBR system, ammonia nitrogen is converted into nitrate and nitrate nitrogen is converted into nitrogen under the action of nitrifying bacteria and denitrifying bacteria, so that the aim of denitrification is fulfilled, and most organic matters in the sewage are removed;
step four: MBR effluent enters a produced water discharge tank, is lifted to a high-efficiency catalytic oxidation tower through a pump, and can effectively purify water quality through the combined action of a catalyst and an oxidant;
step five: the effluent of the catalytic oxidation tower enters a high-efficiency directional filtering unit to further remove pollutants in water, so that the requirement of a connecting pipe is met;
step six: the coagulating sedimentation and the sludge generated by the biochemical system are discharged into a sludge concentration tank together for sedimentation, the supernatant automatically flows into a biochemical regulating tank, the concentrated sludge is pumped into a sludge dewatering room for dewatering treatment, and the sludge cake is treated according to the standard;
step seven: waste gas in the regulating tank, the hydrolysis acidification tank, the anaerobic sedimentation tank and the two-stage A/O + MBR system is subjected to negative pressure collection and then is subjected to purification treatment of water washing, dehumidification and activated carbon adsorption.
Compared with the prior art, the invention has the beneficial effects that:
1. the landfill leachate of the invention reaches the limit value of water pollution discharge concentration specified in the pollution control Standard of domestic refuse landfill (GB 16889-2008) after being treated, and can be connected to a sewage treatment plant.
2. According to the invention, sewage circulating type precipitation is realized through the solid-liquid separation device, clear water flows away along the overflowing flat cylinder, sludge impurities are uniformly and flatly laid on the closed-loop filter membrane cloth, and the closed-loop filter membrane cloth is conveyed along with the conveying hole belt, so that the sludge impurities are smoothly conveyed to the collecting device and are efficiently collected by the collecting device, and the stable development of a coagulating precipitation process is ensured.
Drawings
Fig. 1 is a flow chart of a landfill leachate treatment process before modification.
FIG. 2 is a flow chart of the landfill leachate treatment process of the present invention.
FIG. 3 is a schematic structural view of a solid-liquid separation apparatus.
FIG. 4 is a schematic view of the structure of a main U-shaped tube.
Fig. 5 is a schematic structural diagram of a tank body of the sedimentation tank.
FIG. 6 is a graph of a unit valve position profile.
Fig. 7 is a side frame structure diagram.
Fig. 8 is a schematic view of the structure of the collecting device.
Fig. 9 is a schematic view of a unit valve structure.
Fig. 10 is a schematic view of the structure of the integrated part.
FIG. 11 is a data chart of daily test of the leachate treatment conditioning tank and hydrolysis acidification tank in 12 months of 2021.
FIG. 12 is a daily test data chart of the primary AO tank and the MBR membrane effluent tank for leachate treatment at 12 months in 2021.
Fig. 13 is a data chart of daily detection of an external drainage basin after treatment by an activated carbon canister at the end of the leachate treatment system in 12 months in 2021.
FIG. 14 is a data chart of daily tests of the leachate treatment conditioning tank and the hydrolysis acidification tank in 2022 months at 6.
FIG. 15 is a data chart of daily measurements of the first-stage AO tank and MBR membrane effluent tank for leachate treatment at 6 months of 2022.
Fig. 16 is a data chart of daily detection data of an external drainage pool after treatment by an activated carbon tank at the end of the leachate treatment system in 2022 months after treatment.
In the figure: the device comprises a conveying hole belt 1, a sedimentation tank box body 2, an overflow flat barrel 3, a main U-shaped pipe 4, a unit valve 5, a side frame 6, a closed-loop filter membrane cloth 7, a collecting device 8, a sludge baffle 9, a conveying roller 10, a V-shaped frame 11, a side wheel 12, a screw rod 13, a T-shaped slide block 14, a mud pushing disc 15, a short plate 16, a sliding rail column 17, an L-shaped position control plate 18, a long J-shaped arc plate 19, a collecting shell 20, a positioning frame 21, an integrated part 22, a transverse support shaft 23, a longitudinal support shaft 24, a T-shaped plate frame 25, a disc gear 26, a pinion 27, a turbine fan 28, a frame plate 29, a first spring 30, a guide column 31 and a brake wheel 32.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art without creative efforts based on the technical solutions of the present invention belong to the protection scope of the present invention.
Referring to fig. 1 to 16, the present invention provides a technical solution: a solid-liquid separation device for landfill leachate treatment comprises a conveying hole belt 1, a sedimentation tank box body 2 is arranged below the conveying hole belt 1, an overflow flat barrel 3 penetrates through one side of the sedimentation tank box body 2, one end of the overflow flat barrel 3 extends into the conveying hole belt 1, a plurality of main U-shaped pipes 4 which are uniformly distributed penetrate through the other side of the sedimentation tank box body 2, one ends of the main U-shaped pipes 4 extend between the conveying hole belt 1 and the sedimentation tank box body 2, a plurality of unit valves 5 which are uniformly distributed are arranged on the main U-shaped pipes 4 between the conveying hole belt 1 and the sedimentation tank box body 2, two end positions of the conveying hole belt 1 are respectively provided with a closed-loop filtering membrane side frame cloth 7, the closed-loop filtering membrane cloth 7 is fixedly adhered to the inner wall of the conveying hole belt 1, a collection device 8 penetrates through the conveying hole belt 1, the collecting device 8 is fixed at one end of the sedimentation tank box body 2, the two sides of the bottom of the conveying hole belt 1 are both provided with sludge baffles 9, the sludge baffles 9 are fixed on the sedimentation tank box body 2, as can be understood by referring to fig. 7, one end of a conveying roller 10 is externally connected to a driving mechanism in the prior art, the conveying roller 10 rotates to drive the conveying hole belt 1 to convey, the whole solid-liquid separation device is a device for coagulating sedimentation, after the biochemical regulating tank is treated, a coagulant is put into liquid, then the liquid is injected into the conveying hole belt 1 through a pipeline and then falls into the sedimentation tank box body 2, the coagulated impurities are laid on the conveying hole belt 1 on the upper surface of the sedimentation tank box body 2, then, clear water separated from the impurities is upwards, the clear water flows to the next process along with overflowing the flat cylinder 3, the sludge impurities move under the conveying hole belt 1, when the sludge moves to the corner of the conveying hole belt 1 on one side of the collecting device 8, the sludge slips and is collected by the collecting device 8.
The sludge baffle 9 comprises a blocking plate and a plurality of uniformly distributed inner supporting columns fixedly connected to one side of the blocking plate, one end of each inner supporting column on the sludge baffle 9 is fixed to the sedimentation tank box 2, the side frame 6 comprises a conveying roller 10, a V-shaped frame 11 and side wheels 12, the conveying hole belt 1 is supported by the cooperation of the two side frames 6, the conveying hole belt 1 is made to be in a flat hexagonal prism frame shape, the two ends of the conveying roller 10 are connected with the V-shaped frames 11, the V-shaped frames 11 are fixed to the sedimentation tank box 2, each V-shaped frame 11 is provided with two side wheels 12, one side wheel 12 is arranged in the middle of each V-shaped frame 11, the other end of each V-shaped frame 11 is provided with another side wheel 12, the other end of each V-shaped frame 11 is provided with the conveying roller 10, each conveying hole belt 1 is a closed-loop rubber belt, and a plurality of uniformly distributed through holes are formed in the rubber belts.
The limit wheel 12 includes the fixed minor axis in T type disk body and T type disk body middle part, and the T type disk body shore conveyer belt 1's of limit wheel 12 inner wall edge, and the minor axis activity on the limit wheel 12 cup joints in the through-hole of seting up on V type frame 11, and the both ends of conveying roller 10 all set up the minor axis, and the minor axis activity of conveying roller 10 tip cup joints in the through-hole of seting up on V type frame 11, props a dog-ear section of conveyer belt 1 in the conveying roller 10.
The collecting device 8 comprises a screw rod 13, a T-shaped sliding block 14, a mud pushing disc 15, a short plate 16, a sliding rail column 17, an L-shaped position control plate 18 and a long J-shaped arc plate 19, the two ends of the sliding rail column 17 are both fixed with the L-shaped position control plate 18, the L-shaped position control plate 18 is fixed on the outer wall of the sedimentation tank box body 2, the screw rod 13 is distributed below the sliding rail column 17 in parallel, the end part of the screw rod 13 is movably sleeved in a through hole formed in the L-shaped position control plate 18, the screw rod 13 penetrates through a threaded hole formed in the mud pushing disc 15, the T-shaped sliding block 14 is fixed on one side of the mud pushing disc 15, the T-shaped sliding block 14 is arranged in a T-shaped sliding groove formed in the sliding rail column 17 in a matched mode, the long J-shaped arc plate 19 is covered below the screw rod 13, a plurality of short plates 16 which are uniformly distributed are fixed between the long J-shaped arc plate 19 and the sliding rail column 17, the mud is understood by referring to the long J-shaped arc plate 19, after enough impurities are gathered in the long J-shaped arc plate 19, the sludge pushing disc 13 controls the mud pushing disc 15, impurities which are arranged in the existing external connection end part of the screw rod 13, and the existing long-type arc plate driving mechanism, and the existing technology of the long-arc-type mechanism is controlled by an external connection mechanism, and the long-type arc plate 13.
The manifold 22 comprises a transverse support shaft 23, a longitudinal support shaft 24, a T-shaped plate frame 25, a plate gear 26, a pinion 27, a turbine fan 28, a frame plate 29, a first spring 30, a guide column 31 and a brake wheel 32, wherein a through hole is formed in the middle plate body of the plate gear 26, the longitudinal support shaft 24 is movably sleeved in the through hole, the brake wheel 32 is fixedly connected to one end of the transverse support shaft 23, the upper end of the brake wheel 32 supports the conveying hole belt 1, the upper end of the longitudinal support shaft 24 realizes direction change transmission of the transverse support shaft 23 by arranging two bevel gears, the transverse support shaft 23 is movably sleeved in the through hole formed in the T-shaped plate frame 25, the plate gear 26 is fixedly connected to the bottom of the longitudinal support shaft 24, the pinion 27 is connected to one side of the plate gear 26 in a meshing manner, and the pinion 27 is fixedly sleeved on the turbine fan 28.
The turbofan 28 comprises a central shaft and a plurality of blades which are evenly distributed and are fixedly and annularly arranged at one end of the central shaft, the pinion 27 is sleeved on the central shaft of the turbofan 28, the top end of the central shaft of the turbofan 28 is movably sleeved in a through hole formed in the T-shaped plate frame 25, the frame plate 29 comprises a cylinder and transverse plates which are connected with two sides of the cylinder, the cylinder of the frame plate 29 is fixedly sleeved outside the collecting shell 20, two ends of the frame plate 29 are fixedly provided with through holes, guide columns 31 movably penetrate through the through holes, first spring plates 30 are sleeved on the guide columns 31, the top ends of the guide columns 31 are fixedly connected with the T-shaped plate frame 25, the first springs 30 are supported between the T-shaped plate frame 25 and the guide columns 31, the turbofan 28 is arranged at the top opening position of the collecting shell 20, as can be understood by referring to figures 6, 9 and 10, in the conveying process of the conveying hole belt 1, the first springs 30 elastically support the T-shaped plate frame 25 to further control the transverse supporting shaft 23, the transverse supporting shaft 23 drives the brake wheel 32, the upper end of the brake wheel 32 supports against the conveying hole belt 1, so that the conveying hole belt 1 drives the brake wheel 32, the brake wheel 32 rotates to control the transverse supporting shaft 23, the transverse supporting shaft 23 drives the longitudinal supporting shaft 24, the longitudinal supporting shaft 24 drives the disc gear 26, the disc gear 26 drives the pinion 27, the rotating speed is increased, the pinion 27 controls the turbine fan 28, the turbine fan 28 rotates to cause water flow to flow downwards, so that sludge impurities fall and are attached to the closed-loop filtering film cloth 7 in an auxiliary mode, the sludge impurities in the liquid are accelerated to precipitate and fall, water on the upper surface of the sedimentation tank body 2 is subjected to suction from the unit valve 5, the water flow falls, the sludge impurities are filtered during the closed-loop filtering film cloth 7, the sludge impurities are intercepted, if the sludge impurities are attached to the part of the closed-loop filtering film cloth 7 and are few, the natural permeability is strong, the influence of the suction from the unit valve 5 is large, so that the falling of the sludge impurities is accelerated, supplementary silt impurity evenly tiles in closed loop filter membrane cloth 7 top like this, with higher speed sewage deposits, and the silt impurity after the tiling is carried collection device 8 back, can be collected by collection device 8 is even, promotes the collection operating mass of mud, and pours into from the rivers of 28 whereabouts of turbine fan and collect the shell 20, assembles main U type pipe 4 afterwards in, pours into the surface department of sedimentation tank box 2 again, realizes the circulation of water and deposits.
A landfill leachate treatment system comprises the following steps:
the method comprises the following steps: the leachate of the refuse landfill automatically flows into a collecting well through the original pipeline and then enters a regulating tank through a lift pump for carrying out homogeneous and uniform regulation;
step two: the leachate enters a coagulating sedimentation treatment unit through a regulating reservoir lifting pump, and a coagulant and a flocculating agent are pumped into the coagulating sedimentation treatment unit to remove a large amount of pollutants such as suspended matters, heavy metals, total phosphorus and the like; the supernatant of the coagulating sedimentation automatically flows into an intermediate water tank, then the wastewater is pumped into a hydrolysis acidification tank, and the effluent of the acidification tank automatically flows into an anaerobic sedimentation tank;
step three: the effluent of the anaerobic sedimentation tank automatically flows into a two-stage A/O + MBR system, ammonia nitrogen is converted into nitrate and nitrate nitrogen is converted into nitrogen under the action of nitrifying bacteria and denitrifying bacteria, so that the aim of denitrification is fulfilled, and most organic matters in the sewage are removed;
step four: MBR effluent enters a produced water discharge tank, is lifted to a high-efficiency catalytic oxidation tower through a pump, and can effectively purify water quality through the combined action of a catalyst and an oxidant;
step five: the effluent of the catalytic oxidation tower enters a high-efficiency directional filtering unit to further remove pollutants in water, so that the requirement of a connecting pipe is met;
step six: the coagulating sedimentation and the sludge generated by the biochemical system are discharged into a sludge concentration tank together for sedimentation, the supernatant automatically flows into a biochemical regulating tank, the concentrated sludge is pumped into a sludge dewatering room for dewatering treatment, and the sludge cake is treated according to the standard;
step seven: waste gas in the regulating tank, the hydrolysis acidification tank, the anaerobic sedimentation tank and the two-stage A/O + MBR system is subjected to negative pressure collection and then is subjected to purification treatment of water washing, dehumidification and activated carbon adsorption.
After being treated, the landfill leachate of the invention reaches the water pollution emission concentration limit value specified in the table below of the pollution control Standard of domestic refuse landfill (GB 16889-2008), the landfill leachate is accessed to a sewage treatment plant, and the water quality of the influent water is shown in the following table:
fig. 11 to 16 are graphs of data of the beneficial effects of the method of the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a landfill leachate handles solid-liquid separation equipment, includes delivery port area (1), its characterized in that: the lower part of conveyer belt (1) is provided with sedimentation tank box (2), one side of sedimentation tank box (2) is run through and is spilled over flat section of thick bamboo (3), spills over flat section of thick bamboo (3) one end and extends to in the conveyer belt (1), and the opposite side of sedimentation tank box (2) is run through and is had a plurality of evenly distributed's main U type pipe (4), the one end of main U type pipe (4) extends to between conveyer belt (1) and sedimentation tank box (2), and is provided with a plurality of evenly distributed's unit valve (5) on main U type pipe (4) between conveyer belt (1) and the sedimentation tank box (2), the both ends position of conveyer belt (1) all is provided with side frame (6), and two side frame (6) opposite direction set up, the inside of conveyer belt (1) is covered with closed loop filter membrane cloth (7), and closed loop filter membrane cloth (7) fixed adhesion is on the inner wall of conveyer belt (1), and run through collection device (8) in conveyer belt (1), and collection device (8) are fixed in the one end of sedimentation tank box (2), and the baffle (9) are fixed in the both sides of sedimentation tank box (2), and sedimentation tank box (9) are provided with the baffle (9).
2. The solid-liquid separation device for landfill leachate treatment according to claim 1, wherein: silt baffle (9) are including intercepting board and a plurality of evenly distributed's of intercepting board one side fixed connection internal stay post, and internal stay post one end on silt baffle (9) is fixed on sedimentation tank box (2), side frame (6) are including conveying roller (10), V type frame (11) and limit wheel (12), and two side frame (6) cooperations are propped up conveying hole area (1), make conveying hole area (1) present flat hexagonal prism frame form, the both ends position of conveying roller (10) all is connected with V type frame (11), V type frame (11) are fixed on sedimentation tank box (2), all are provided with two limit wheels (12) on every V type frame (11), and wherein the middle part of V type frame (11) is provided with one limit wheel (12), and the one end of V type frame (11) is provided with another limit wheel (12), and the other end of V type frame (11) is provided with conveying roller (10), and conveying hole area (1) are closed loop rubber area, and set up a plurality of evenly distributed's through-hole on the rubber area.
3. The solid-liquid separation device for landfill leachate treatment according to claim 2, wherein: the edge wheel (12) comprises a T-shaped disk body and a short shaft fixed in the middle of the T-shaped disk body, the T-shaped disk body of the edge wheel (12) props the inner wall edge of the conveying hole belt (1), the short shaft on the edge wheel (12) is movably sleeved in a through hole formed in the V-shaped frame (11), the short shaft is arranged at two ends of the conveying roller (10), the short shaft at the end of the conveying roller (10) is movably sleeved in the through hole formed in the V-shaped frame (11), and one corner folding section of the conveying hole belt (1) is propped in the conveying roller (10).
4. The solid-liquid separation device for landfill leachate treatment according to claim 1, wherein: the collecting device (8) comprises a lead screw (13), a T-shaped sliding block (14), a mud pushing disc (15), short plates (16), a sliding rail column (17), an L-shaped position control plate (18) and a long J-shaped arc plate (19), wherein the L-shaped position control plate (18) is fixed at each of two ends of the sliding rail column (17), the L-shaped position control plate (18) is fixed on the outer wall of the sedimentation tank box body (2), the lead screw (13) is distributed in parallel below the sliding rail column (17), the end part of the lead screw (13) is movably sleeved in a through hole formed in the L-shaped position control plate (18), the lead screw (13) penetrates through a threaded hole formed in the mud pushing disc (15), the T-shaped sliding block (14) is fixed on one side of the mud pushing disc (15), the T-shaped sliding block (14) is arranged in a T-shaped sliding groove formed in the sliding rail column (17) in a matched mode, the long J-shaped arc plate (19) is covered below the lead screw (13), and a plurality of short plates (16) which are uniformly distributed between the long J-shaped arc plate (19) and the sliding rail column (17).
5. The solid-liquid separation device for landfill leachate treatment according to claim 1, wherein: unit valve (5) are including collecting shell (20), locating rack (21) and integrated part (22), shell (20) are collected to one side fixedly connected with of main U type pipe (4), collect shell (20) including the L type pipe of funnel casing and funnel casing bottom intercommunication, collect L type pipe one end and main U type pipe (4) intercommunication on shell (20), the funnel casing top of collecting shell (20) is fixed with integrated part (22), integrated part (22) upper end supports delivery port area (1), be fixed with locating rack (21) on main U type pipe (4) of collecting shell (20) one side, locating rack (21) are fixed on sedimentation tank box (2).
6. The solid-liquid separation device for landfill leachate treatment according to claim 5, wherein: the integrated part (22) comprises a transverse support shaft (23), a longitudinal support shaft (24), a T-shaped plate frame (25), a plate gear (26), a pinion (27), a turbine fan (28), a frame plate (29), a first spring (30), guide columns (31) and brake wheels (32), through holes are formed in the middle plate body of the plate gear (26), the longitudinal support shaft (24) is movably sleeved in the through holes, the brake wheels (32) are fixedly connected to one end of the transverse support shaft (23), the upper end of each brake wheel (32) supports against a conveying hole belt (1), the upper end of the longitudinal support shaft (24) realizes turning transmission of the transverse support shaft (23) through two bevel gears, the transverse support shaft (23) is movably sleeved in the through holes formed in the T-shaped plate frame (25), the plate gear (26) is fixedly connected to the bottom of the longitudinal support shaft (24), one side of the plate gear (26) is meshed with the pinion (27), and the pinion (27) is fixedly sleeved on the turbine fan (28).
7. The solid-liquid separation device for landfill leachate treatment according to claim 6, wherein: turbine fan (28) include a plurality of evenly distributed's that axis and well axle one end fixed ring established acanthus, pinion (27) cover is epaxial in turbine fan (28), and the axis top activity of turbine fan (28) cup joints in the through-hole of seting up on T type panel rack (25), frame plate (29) include the diaphragm that drum and drum both sides are all connected, the drum fixed cover of frame plate (29) is outside collecting shell (20), the both ends of frame plate (29) have all fixedly seted up the through-hole, and the activity runs through has guide post (31) in the through-hole, the cover has first spring (30) on guide post (31), the top and the T type panel rack (25) fixed connection of guide post (31), first spring (30) support between T type panel rack (25) and guide post (31), turbine fan (28) set up the top opening position of collecting shell (20).
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| CN202211237463.0A CN115321763A (en) | 2022-10-11 | 2022-10-11 | Landfill leachate treatment system and solid-liquid separation device thereof |
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| CN202211237463.0A CN115321763A (en) | 2022-10-11 | 2022-10-11 | Landfill leachate treatment system and solid-liquid separation device thereof |
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Application publication date: 20221111 |