CN210176678U - Landfill leachate treatment system - Google Patents
Landfill leachate treatment system Download PDFInfo
- Publication number
- CN210176678U CN210176678U CN201920762021.5U CN201920762021U CN210176678U CN 210176678 U CN210176678 U CN 210176678U CN 201920762021 U CN201920762021 U CN 201920762021U CN 210176678 U CN210176678 U CN 210176678U
- Authority
- CN
- China
- Prior art keywords
- tank
- membrane
- water
- pump
- main pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a landfill leachate processing system, this system include that filtration liquid equalizing basin, oxygen deficiency pond, good oxygen pond, flocculation and precipitation pond, first middle water tank, sand filter, the middle water tank of second, core formula filter, one-level DTRO membrane system, second grade DTRO membrane system, concentrate pond, PAM dissolve the medication dosing device and PAC dissolve the medication dosing device. The utility model discloses the working costs is low, and the treatment effect is good, and operation control is simple.
Description
Technical Field
The utility model relates to a sewage treatment field, in particular to landfill leachate treatment system.
Background
With the increase of urban population, the enlargement of urban scale and the improvement of the living standard of residents in China, the yield of urban domestic garbage in China is increased sharply. By 2017, the annual output of domestic municipal refuse in China reaches 4 hundred million tons, and the domestic municipal refuse is increased by 8-10% per year and approaches the level of industrially developed countries. Landfill is the main mode of garbage disposal in China. Whether the landfill leachate is treated and discharged after reaching the standard is one of important indexes for judging whether a landfill site is a standard landfill site or not.
At the initial stage of landfill, because the organic matter of filtration liquid, ammonia nitrogen concentration are lower, the biodegradability is better, but along with the extension of landfill time, landfill leachate's concentration is higher and higher, the composition is more and more complicated, the biodegradability reduces, and the range of variation is big, the change rule is complicated for the processing degree of difficulty is bigger and bigger. The method is characterized in that the method adopts the combination of two-stage biochemical treatment, ammonia stripping-biochemical treatment, split MBR membrane treatment and other methods in the treatment of landfill leachate in China, so that the investment and operation cost is high, the stable operation cannot be ensured, and the treatment difficulty of the aging liquid with longer landfill time is very high. At present, no practical technology capable of economically and effectively solving the problem of landfill leachate treatment exists internationally.
In order to solve the problem, the applicant provides a combined treatment process with the emission standard reaching the pollution control standard of domestic refuse landfills (GB 16889-2008), aiming at refuse sanitary landfills of different scales in domestic large and medium-sized cities.
Disclosure of Invention
In order to solve the problem existing in the background technology, the utility model provides a rational in infrastructure, the working costs is low, and the treatment effect is good, and operation control is simpler, the wide landfill leachate processing system of range of application.
The utility model adopts the following technical scheme:
the garbage leachate treatment system comprises a leachate regulating tank, an anoxic tank, an aerobic tank, a flocculation reaction precipitation system, a first intermediate water tank, a sand filter, a second intermediate water tank, a core filter, a first-stage DTRO membrane system, a second-stage DTRO membrane system, a concentrate tank, a PAM (polyacrylamide) solution dosing device and a PAC (polyaluminium chloride) solution dosing device; the water outlet end of the percolate adjusting tank is connected to the input end of the anoxic tank, the output end of the anoxic tank is connected to the input end of the aerobic tank, the output end of the aerobic tank is connected to the input end of the flocculation reaction sedimentation system, the output end of the flocculation reaction sedimentation system is connected to the input end of the first intermediate water tank, the output end of the first intermediate water tank is connected to the input end of the sand filter, the output end of the sand filter is connected to the input end of the second intermediate water tank, the output end of the second intermediate water tank is connected to the core filter, the output end of the core filter is connected to the primary DTRO membrane system, the permeate end of the primary DTRO membrane system is connected to the secondary DTRO membrane system, the concentrate end of the primary DTRO membrane system is connected to the concentrate tank, and the permeate end of the secondary DTRO membrane system is connected to an external, the concentrated solution end of the second-stage DTRO membrane system is connected to the second intermediate water tank, and the output ends of the PAC chemical dissolving and feeding device and the PAM chemical dissolving and feeding device are both connected to the flocculation reaction precipitation system; a liquid level sensor is arranged in the percolate adjusting tank; and liquid level sensors are also arranged at the bottom of the first middle water tank and the second middle water tank.
The landfill leachate processing system, wherein: the processing system also comprises a PLC control unit; the PLC control unit comprises an upper computer, a 16-road network switch, a membrane processing PLC, an MCC control cabinet, an online monitoring system and field monitoring equipment; the upper computer, the membrane processing PLC and the field monitoring equipment are all connected with the 16-way switch through RJ45 communication lines, and the 16-way switch is connected with an optical fiber transceiver through an RJ45 communication line and is connected with a public network through the optical fiber transceiver; the online monitoring system and the MCC control cabinet are electrically connected with the membrane processing PLC through a circuit; the liquid level sensor arranged inside the percolate adjusting tank and the liquid level sensors arranged at the bottoms of the first middle water tank and the second middle water tank are electrically connected with the MCC control cabinet through lines; the PAC dissolving and dosing device and the PAM dissolving and dosing device are electrically connected with the MCC control cabinet through lines.
The landfill leachate processing system, wherein: the flocculation reaction sedimentation system comprises a flocculation sedimentation tank and a reaction tank arranged on the front side of the flocculation sedimentation tank; the input end of the reaction tank is connected with the output end of the aerobic tank, the output end of the reaction tank is connected with the input end of the flocculation sedimentation tank, and the upper dosing end of the reaction tank is connected with the output ends of the PAC dosing device and the PAM dosing device; a sludge discharge valve is arranged at the bottom of the flocculation sedimentation tank and is connected to the concentrated solution tank through the sludge discharge valve; and a mechanical stirrer is arranged in the flocculation sedimentation tank and is electrically connected with the MCC control cabinet through a circuit.
The landfill leachate processing system, wherein: a submersible sewage pump is connected between the water outlet end of the percolate adjusting tank and the input end of the anoxic tank; a sand filter water inlet pump is connected between the output end of the first intermediate water tank and the input end of the sand filter; a filtering water inlet pump is connected between the output end of the second intermediate water tank and the core type filter; the sand filtration water inlet pump and the filtration water inlet pump are electrically connected with the MCC control cabinet through lines; the output end of the core type filter is connected to the primary DTRO membrane system through a membrane high-pressure plunger pump and a pressurizing circulating pump; and pressure sensors are arranged on water inlet pipelines of the high-pressure plunger pump and the pressurization circulating pump and are electrically connected with the MCC control cabinet through lines.
The landfill leachate processing system, wherein: the wall of the anoxic tank is provided with a flow pushing device which is electrically connected with the PLC control unit; aeration devices are uniformly arranged in the aerobic tank and connected to an external Roots blower; a dissolved oxygen analyzer is also arranged in the aerobic tank; the dissolved oxygen analyzer and the Roots blower are electrically connected with the MCC control cabinet through lines; the Roots blower is arranged beside the aerobic tank and is provided with a sound insulation device, and the air volume of the Roots blower is controlled by the oxygen dissolving analyzer in a linkage manner; a backwashing water pump is also connected between the sand filter and the second intermediate water tank; the backwashing water pump is electrically connected with the MCC control cabinet through a circuit, the inlet of the backwashing water pump is connected with the second intermediate water tank, and the outlet of the backwashing water pump is connected with the sand filter; and a centrifugal pump is arranged outside the concentrated solution tank and is electrically connected with the MCC control cabinet through a line.
The landfill leachate processing system, wherein: the primary DTRO membrane system and the secondary DTRO membrane system are both membrane column assemblies formed by connecting more than one vertically-installed membrane column in parallel; each membrane column is mainly formed by connecting a membrane shell, a fastening bolt, an upper flange, a lower flange, a flow guide disc, a membrane, an O-shaped sealing ring, a lip-shaped sealing ring, a central supporting rod, a fastening nut, a water inlet main pipe, a permeate main pipe and a concentrate main pipe;
the fastening bolt is installed on the inner side of the membrane shell, the upper flange is sleeved at the upper end of the fastening bolt in a matching manner, the lower flange is sleeved at the lower end of the fastening bolt in a matching manner, the flow guide disc is provided with a plurality of flow guide discs which are uniformly sleeved on the fastening bolt between the upper flange and the lower flange, the membrane is also provided with a plurality of flow guide discs which are respectively sleeved on the fastening bolt between the adjacent flow guide discs, the flow guide discs and the fastening bolt are in sealing connection through the O-shaped sealing ring, the flow guide disc at the lower end of the fastening bolt is in sealing connection with the lower flange through the lip-shaped sealing ring, and the central support rod is sleeved on the fastening bolt which penetrates out of the outer side of the upper flange and is locked and fixed through the fastening nut;
the lower flange is provided with a water inlet, a water outlet and a concentrated liquid outlet; the membrane column is characterized in that the water inlets of the lower flanges are connected through the water inlet main pipe, the water outlets of the lower flanges are connected through the permeate main pipe, and the concentrate water outlets of the lower flanges are connected through the concentrate main pipe.
The landfill leachate processing system, wherein: the water inlet main pipe is connected with the water inlet through threads, the permeate main pipe is connected with the water outlet through threads, and the concentrate main pipe is connected with the concentrate water outlet through threads; the pressure-resistant grades of the water inlet main pipe and the concentrated solution main pipe are both more than 10 MPa.
Has the advantages that:
the utility model discloses landfill leachate processing system structural design is simple, reasonable, easily controls, and the treatment cost is low, only fairly foreign technical method's 70-80%, can also extensively be used for various high concentration organic pollution's sewage treatment in-process, especially to the processing process of landfill leachate. The process is simple, and comprises two biochemical treatment steps of anoxic treatment and aerobic treatment, so that main high-concentration organic pollutants in the garbage leachate are removed, the cleaning frequency of a membrane system is reduced, a physicochemical coagulation precipitation treatment method is adopted, a quartz sand filter is adopted to filter pollutants which are difficult to be treated by a biochemical method, and a two-stage disc tube type reverse osmosis treatment technology is adopted subsequently, so that the leachate treated by the process reaches the pollution control standard of a domestic garbage landfill (GB 16889-2008 discharge standard).
Drawings
FIG. 1 is a schematic diagram of the overall structure connection of the landfill leachate treatment system of the utility model;
FIG. 2 is a schematic structural diagram of membrane columns adopted by a primary DTRO membrane system and a secondary DTRO membrane system of the landfill leachate treatment system of the utility model;
FIG. 3 is a schematic view of the pipeline connection between the primary DTRO membrane system and the secondary DTRO membrane system of the landfill leachate treatment system of the present invention;
FIG. 4 is a schematic flow diagram of the landfill leachate treatment system of the present invention;
fig. 5 is the utility model discloses landfill leachate processing system's PLC the control unit's connection schematic block diagram.
Detailed Description
As shown in fig. 1 to 3, the utility model discloses landfill leachate treatment system, including leachate equalizing basin 1, oxygen deficiency pond 2, good oxygen pond 3, flocculation reaction sedimentation system 4, water tank 5 in the middle of the first, sand filter 6, water tank 7 in the middle of the second, core filter 8, one-level DTRO membrane system 9, second grade DTRO membrane system 10, concentrate pond 11, PAM dissolve medication dosing device 12, PAC dissolve medication dosing device 13 and PLC the control unit 14.
The water outlet end of the leachate adjusting tank 1 is connected to the input end of the anoxic tank 2 through an underflow pump, the output end of the anoxic tank 2 is connected to the input end of the aerobic tank 3, the output end of the aerobic tank 3 is connected to the input end of the flocculation reaction sedimentation system 4, the output end of the flocculation reaction sedimentation system 4 is connected to the input end of the first intermediate water tank 5, the output end of the first intermediate water tank 5 is connected to the input end of the sand filter 6 through a sand filtration water inlet pump, the output end of the sand filter 6 is connected to the input end of the second intermediate water tank 7, the output end of the second intermediate water tank 7 is connected to a core filter 8 through a filtration water inlet pump, the output end of the core filter 8 is connected to a first-stage DTRO membrane system 9 through a membrane high-pressure plunger pump and a pressurizing circulating pump, the permeate end of the first-stage DTRO membrane system 9 is connected to a second-stage DTRO membrane system 10, and, the permeate end of the second-stage DTRO membrane system 10 is connected to an external clear water discharge tank, the concentrate end of the second-stage DTRO membrane system 10 is connected to the second intermediate water tank 7, and the output ends of the PAC dosing device 12 and the PAM dosing device 13 are both connected to the dosing end of the flocculation reaction sedimentation system 4.
Wherein, the sand filtration water inlet pump and the filtration water inlet pump are both electrically connected with the PLC control unit 14; pressure sensors are installed on water inlet pipelines of the high-pressure plunger pump and the pressurizing circulating pump, and the pressure sensors are electrically connected with the PLC control unit 14.
The percolate adjusting tank 1 is internally provided with a liquid level sensor which is electrically connected with a PLC control unit 14.
The wall of the anoxic pond 2 is provided with a flow pushing device which is electrically connected with the PLC control unit 14.
Aeration devices are uniformly arranged in the aerobic tank 3, and an external Roots blower supplies air sources to the aeration devices; the Roots blower is arranged beside the aerobic tank 3 and is provided with a sound insulation device; the aerobic tank 3 is also internally provided with a dissolved oxygen analyzer; the dissolved oxygen analyzer and the Roots blower of the aerobic tank 3 are electrically connected with the PLC control unit 14, and the air volume of the Roots blower is controlled by the dissolved oxygen analyzer of the aerobic tank 3 in a linkage manner.
The flocculation reaction sedimentation system 4 comprises a flocculation sedimentation tank and a reaction tank arranged on the front side of the flocculation sedimentation tank; a mud valve is arranged at the bottom of the flocculation sedimentation tank and is connected to an external concentrated solution tank 11 through the mud valve, a mechanical stirrer is arranged in the flocculation sedimentation tank and is electrically connected with a PLC (programmable logic controller) control unit 14; the input end of the reaction tank is connected with the output end of the aerobic tank 3, the output end of the reaction tank is connected with the input end of the flocculation sedimentation tank, and the upper medicine adding end of the reaction tank is connected with the output ends of the PAC dissolving and medicine adding device 12 and the PAM dissolving and medicine adding device 13.
A backwashing water pump is also connected between the sand filter 6 and the second intermediate water tank 7; the backwashing water pump is electrically connected with the PLC control unit 14, the inlet of the backwashing water pump is connected with the second intermediate water tank 7, and the outlet of the backwashing water pump is connected with the sand filter 6.
The bottom of the first intermediate water tank 5 is provided with a liquid level sensor electrically connected with a PLC control unit 14.
The bottom of the second intermediate water tank 7 is also mounted with a level sensor electrically connected to a PLC control unit 14.
This core formula filter 8's filter core quantity is decided by the flow of intaking, the filter core precision is 10 um.
As shown in fig. 2 and 3, the primary DTRO membrane system 9 and the secondary DTRO membrane system 10 are membrane column assemblies formed by connecting more than one vertically installed membrane columns in parallel; the single membrane column is mainly formed by connecting a membrane shell 001, a fastening bolt 002, an upper flange 003, a lower flange 004, a flow guide disc 005, a membrane 006, an O-shaped sealing ring 007, a lip-shaped sealing ring 008, a central supporting rod 009, a fastening nut 010, a water inlet 011, a water outlet 012, a concentrated solution water outlet 013, a water inlet main pipe 014, a permeate main pipe 015 and a concentrated solution main pipe 016.
The fastening bolt 002 is installed inside the membrane shell 001, the upper flange 003 is sleeved at the upper end of the central support rod 009 in a matching manner, the lower flange 004 is sleeved at the lower end of the central support rod 009 in a matching manner, the baffle plate 005 is provided with a plurality of baffle plates which are uniformly sleeved on the central support rod 009 between the upper flange 003 and the lower flange 004, the membrane 006 is also provided with a plurality of baffle plates which are respectively sleeved on the central support rod 009 between the adjacent baffle plates 005, the baffle plate 005 and the central support rod 009 are connected in a sealing manner through an O-shaped seal ring 007, the lower flange 004 and the baffle plate 005 at the lower end of the central support rod 009 are connected in a sealing manner through a lip-shaped seal ring 008, and the central support rod 009 is sleeved on the fastening bolt 002 which penetrates out of the outer side of the upper flange; the lower flange 004 is provided with a water inlet 011, a water outlet 012 and a concentrated liquid outlet 013. The water inlets 011 of the adjacent membrane columns are connected through a water inlet main pipe 014, the water outlets 012 of the adjacent membrane columns are connected through a permeate main pipe 015, and the concentrated solution water outlets 013 of the adjacent membrane columns are connected through a concentrated solution main pipe 016.
The water inlet main pipe 014 is in threaded connection with the water inlet 011 of the membrane column, the permeate main pipe 015 is also in threaded connection with the water outlet 012 of the membrane column, and the concentrate main pipe 016 is also in threaded connection with the concentrate water outlet 013 of the membrane column. The pressure-resistant grades of the water inlet main pipe 014 and the concentrate main pipe 016 are both more than 10 MPa.
The concentrated solution tank 11 is externally provided with a centrifugal pump which is electrically connected with a PLC control unit 14.
The PAC and PAM dissolved drug dosing devices 12 and 13 are both electrically connected to a PLC control unit 14.
As shown in fig. 5, the PLC control unit 14 includes an upper computer 141, a 16-network switch 142, a membrane processing PLC143, an MCC control cabinet 144, an online monitoring system 145, and an on-site monitoring device 146.
The upper computer 141, the membrane processing PLC143 and the field monitoring equipment 146 are all connected with a 16-way switch 142 through RJ45 communication lines, and the 16-way switch 142 is connected with an optical fiber transceiver through an RJ45 communication line and is connected with a public network through the optical fiber transceiver; the on-line monitoring system 145 is electrically connected to the membrane processing PLC 143.
This MCC switch board 144 one end is passed through circuit electricity and is connected the membrane and handle PLC143, and the other end is connected sand filtration intake pump, pressure sensor, the plug flow device of oxygen deficiency pond 2, the dissolved oxygen analysis appearance, roots's fan, mechanical agitator, backwash water pump, the level sensor in the water tank 5 in the middle of the first and the level sensor in the water tank 7 in the middle of the second through the circuit electricity respectively.
The online monitoring system 145 comprises a PH online detector, a COD online detector, an ammonia nitrogen online monitor and a total phosphorus online detector; the PH on-line detector, the COD on-line detector, the ammonia nitrogen on-line monitor and the total phosphorus on-line detector mainly detect the water quality of the water outlet metering tank and are respectively installed in a detection room near the water outlet detection tank.
The on-site monitoring device 146 mainly includes an on-site web camera and a circuit remote monitoring device.
The utility model discloses a PLC the control unit's line connection and control principle as follows:
a sand filtration water inlet pump, a pressure sensor, a flow pushing device of the anoxic pond 2, a dissolved oxygen analyzer of the aerobic pond 3, a Roots blower, a mechanical stirrer, a backwashing water pump, a liquid level sensor in the first intermediate water tank 5 and a liquid level sensor in the second intermediate water tank 7 are all electrically connected with the MCC control cabinet 144 through circuits, then, the MCC control cabinet 144 is electrically connected with the membrane processing PLC143 through a circuit, the membrane processing PLC143 is connected with the upper computer 141 through a 16-network switch 142 through a network, the upper computer 141 is connected with the on-site monitoring device 146, the upper computer 141 receives various data and signals of the on-site monitoring device 146, then the sand filtration water inlet pump, the pressure sensor, the flow pushing device of the anoxic pond 2, the dissolved oxygen analyzer of the aerobic pond 3, the Roots blower, the mechanical stirrer, the backwashing water pump, the liquid level sensor in the first intermediate water tank 5 and the liquid level sensor in the second intermediate water tank 7 are controlled on line in real time to act.
As shown in fig. 1 and fig. 4, the garbage leachate treatment system of the present invention has the following specific operation steps:
(1) homogenizing and uniformly adjusting the water quality and the water quantity of the landfill leachate in a leachate adjusting tank 1 so as to convey the landfill leachate to the next step for treatment through a submersible sewage pump;
(2) sending the percolate with uniform homogeneity and quantity in the percolate adjusting tank 1 into an anoxic tank through a submerged sewage pump, arranging a plug flow device in the anoxic tank 2, carrying out anaerobic biological treatment at the temperature higher than 10 ℃, and controlling the retention time to be 2-4d according to the concentration of pollutants;
(3) overflowing effluent in the anoxic tank 2 automatically flows into the aerobic tank 3, aeration devices are uniformly arranged in the aerobic tank 3, a dissolved oxygen analyzer is arranged in the aerobic tank 3, and dissolved oxygen is controlled to be 2-4mg/L, so that the number of aerobic microorganisms in the aerobic tank 3 is increased, and most pollutants in percolate are degraded;
(4) sending the effluent after aerobic treatment in the aerobic tank 3 into a reaction tank of a flocculation reaction sedimentation system 4, adding a proper amount of flocculation reagents PAC (polyaluminium chloride) and PAM (polyacrylamide) into the reaction tank to achieve a good flocculation effect, and performing free sedimentation in a flocculation sedimentation tank of the flocculation reaction sedimentation system 4;
(5) overflowing the supernatant of the flocculation sedimentation tank into a preset first intermediate water tank 5, pumping the percolate in the first intermediate water tank 5 into a sand filter 6, wherein the sand filter 6 can intercept suspended particles above 50um in the percolate, and the effluent of the sand filter 6 is connected into a second intermediate water tank 7;
(6) the effluent of the second intermediate water tank 7 is conveyed to a core type filter 8 with the filtering precision of 10um by a centrifugal pump, and the filtering precision can be selected according to the concentration of pollutants;
(7) discharging the effluent treated by the core filter 8 into a primary DTRO (digital terrestrial ro) membrane system 9, wherein the number of membrane columns of the primary DTRO membrane system 9 is determined according to the daily treatment scale, then discharging the effluent filtered by the primary DTRO membrane system 9 into a secondary DTRO membrane system 10 under the pressurization of a high-pressure plunger pump, and discharging the concentrated solution treated by the secondary DTRO membrane system 10 into a preset concentrated solution tank 11;
(8) directly discharging water which reaches the pollution control standard of a domestic garbage landfill (GB 16889-2008) after the two-stage DTRO membrane system 10 is filtered, and discharging the concentrated solution discharged by the two-stage DTRO membrane system 10 into the previous second intermediate water tank 7 so as to improve the water yield by circulating filtration;
(9) and finally, recharging the percolate in the concentrated solution tank 11 to a landfill site by using a centrifugal pump.
The utility model discloses think about rationally, the working costs is low, and the treatment effect is good, and operation control is simpler, and the range of application is wide.
Claims (7)
1. The utility model provides a landfill leachate processing system which characterized in that: the treatment system comprises a percolate adjusting tank, an anoxic tank, an aerobic tank, a flocculation reaction sedimentation system, a first intermediate water tank, a sand filter, a second intermediate water tank, a core filter, a primary DTRO (draw-down reverse osmosis) membrane system, a secondary DTRO membrane system, a concentrated solution tank, a PAM (polyacrylamide) solution dosing device and a PAC (polyaluminium chloride) solution dosing device;
the water outlet end of the percolate adjusting tank is connected to the input end of the anoxic tank, the output end of the anoxic tank is connected to the input end of the aerobic tank, the output end of the aerobic tank is connected to the input end of the flocculation reaction sedimentation system, the output end of the flocculation reaction sedimentation system is connected to the input end of the first intermediate water tank, the output end of the first intermediate water tank is connected to the input end of the sand filter, the output end of the sand filter is connected to the input end of the second intermediate water tank, the output end of the second intermediate water tank is connected to the core filter, the output end of the core filter is connected to the primary DTRO membrane system, the permeate end of the primary DTRO membrane system is connected to the secondary DTRO membrane system, the concentrate end of the primary DTRO membrane system is connected to the concentrate tank, and the permeate end of the secondary DTRO membrane system is connected to an external, the concentrated solution end of the second-stage DTRO membrane system is connected to the second intermediate water tank, and the output ends of the PAC chemical dissolving and feeding device and the PAM chemical dissolving and feeding device are both connected to the flocculation reaction precipitation system;
a liquid level sensor is arranged in the percolate adjusting tank; and liquid level sensors are also arranged at the bottom of the first middle water tank and the second middle water tank.
2. The landfill leachate treatment system of claim 1, wherein: the processing system also comprises a PLC control unit; the PLC control unit comprises an upper computer, a 16-road network switch, a membrane processing PLC, an MCC control cabinet, an online monitoring system and field monitoring equipment; the upper computer, the membrane processing PLC and the field monitoring equipment are all connected with the 16-way switch through RJ45 communication lines, and the 16-way switch is connected with an optical fiber transceiver through an RJ45 communication line and is connected with a public network through the optical fiber transceiver; the online monitoring system and the MCC control cabinet are electrically connected with the membrane processing PLC through a circuit;
the liquid level sensor arranged inside the percolate adjusting tank and the liquid level sensors arranged at the bottoms of the first middle water tank and the second middle water tank are electrically connected with the MCC control cabinet through lines; the PAC dissolving and dosing device and the PAM dissolving and dosing device are electrically connected with the MCC control cabinet through lines.
3. The landfill leachate treatment system of claim 2, wherein: the flocculation reaction sedimentation system comprises a flocculation sedimentation tank and a reaction tank arranged on the front side of the flocculation sedimentation tank;
the input end of the reaction tank is connected with the output end of the aerobic tank, the output end of the reaction tank is connected with the input end of the flocculation sedimentation tank, and the upper dosing end of the reaction tank is connected with the output ends of the PAC dosing device and the PAM dosing device;
a sludge discharge valve is arranged at the bottom of the flocculation sedimentation tank and is connected to the concentrated solution tank through the sludge discharge valve; and a mechanical stirrer is arranged in the flocculation sedimentation tank and is electrically connected with the MCC control cabinet through a circuit.
4. The landfill leachate treatment system of claim 2, wherein: a submersible sewage pump is connected between the water outlet end of the percolate adjusting tank and the input end of the anoxic tank;
a sand filter water inlet pump is connected between the output end of the first intermediate water tank and the input end of the sand filter; a filtering water inlet pump is connected between the output end of the second intermediate water tank and the core type filter; the sand filtration water inlet pump and the filtration water inlet pump are electrically connected with the MCC control cabinet through lines;
the output end of the core type filter is connected to the primary DTRO membrane system through a membrane high-pressure plunger pump and a pressurizing circulating pump; and pressure sensors are arranged on water inlet pipelines of the high-pressure plunger pump and the pressurization circulating pump and are electrically connected with the MCC control cabinet through lines.
5. The landfill leachate treatment system of claim 2, wherein: the wall of the anoxic tank is provided with a flow pushing device which is electrically connected with the PLC control unit;
aeration devices are uniformly arranged in the aerobic tank and connected to an external Roots blower; a dissolved oxygen analyzer is also arranged in the aerobic tank; the dissolved oxygen analyzer and the Roots blower are electrically connected with the MCC control cabinet through lines; the Roots blower is arranged beside the aerobic tank and is provided with a sound insulation device, and the air volume of the Roots blower is controlled by the oxygen dissolving analyzer in a linkage manner;
a backwashing water pump is also connected between the sand filter and the second intermediate water tank; the backwashing water pump is electrically connected with the MCC control cabinet through a circuit, the inlet of the backwashing water pump is connected with the second intermediate water tank, and the outlet of the backwashing water pump is connected with the sand filter;
and a centrifugal pump is arranged outside the concentrated solution tank and is electrically connected with the MCC control cabinet through a line.
6. The landfill leachate treatment system of claim 1, wherein: the primary DTRO membrane system and the secondary DTRO membrane system are both membrane column assemblies formed by connecting more than one vertically-installed membrane column in parallel; each membrane column is mainly formed by connecting a membrane shell, a fastening bolt, an upper flange, a lower flange, a flow guide disc, a membrane, an O-shaped sealing ring, a lip-shaped sealing ring, a central supporting rod, a fastening nut, a water inlet main pipe, a permeate main pipe and a concentrate main pipe;
the fastening bolt is installed on the inner side of the membrane shell, the upper flange is sleeved at the upper end of the fastening bolt in a matching manner, the lower flange is sleeved at the lower end of the fastening bolt in a matching manner, the flow guide disc is provided with a plurality of flow guide discs which are uniformly sleeved on the fastening bolt between the upper flange and the lower flange, the membrane is also provided with a plurality of flow guide discs which are respectively sleeved on the fastening bolt between the adjacent flow guide discs, the flow guide discs and the fastening bolt are in sealing connection through the O-shaped sealing ring, the flow guide disc at the lower end of the fastening bolt is in sealing connection with the lower flange through the lip-shaped sealing ring, and the central support rod is sleeved on the fastening bolt which penetrates out of the outer side of the upper flange and is locked and fixed through the fastening nut;
the lower flange is provided with a water inlet, a water outlet and a concentrated liquid outlet; the membrane column is characterized in that the water inlets of the lower flanges are connected through the water inlet main pipe, the water outlets of the lower flanges are connected through the permeate main pipe, and the concentrate water outlets of the lower flanges are connected through the concentrate main pipe.
7. The landfill leachate treatment system of claim 6, wherein: the water inlet main pipe is connected with the water inlet through threads, the permeate main pipe is connected with the water outlet through threads, and the concentrate main pipe is connected with the concentrate water outlet through threads; the pressure-resistant grades of the water inlet main pipe and the concentrated solution main pipe are both more than 10 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920762021.5U CN210176678U (en) | 2019-05-24 | 2019-05-24 | Landfill leachate treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920762021.5U CN210176678U (en) | 2019-05-24 | 2019-05-24 | Landfill leachate treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210176678U true CN210176678U (en) | 2020-03-24 |
Family
ID=69834706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920762021.5U Active CN210176678U (en) | 2019-05-24 | 2019-05-24 | Landfill leachate treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210176678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117136A (en) * | 2019-05-24 | 2019-08-13 | 湖北山鼎环境科技股份有限公司 | Garbage percolation liquid treating system and method |
-
2019
- 2019-05-24 CN CN201920762021.5U patent/CN210176678U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117136A (en) * | 2019-05-24 | 2019-08-13 | 湖北山鼎环境科技股份有限公司 | Garbage percolation liquid treating system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103613252B (en) | Device and process for treating photovoltaic organic wastewater | |
| CN107324539B (en) | Diversified medical environment-friendly type balanced wastewater treatment system | |
| CN110117136A (en) | Garbage percolation liquid treating system and method | |
| CN112794571B (en) | Landfill leachate treatment system | |
| CN106007104A (en) | Mobile unpowered drinking water device and method for treating drinking water by using device | |
| CN206915885U (en) | A kind of integrated sewage treating apparatus | |
| CN104556474A (en) | Water purification process and device of water supply plant | |
| CN210176678U (en) | Landfill leachate treatment system | |
| CN215161380U (en) | External anaerobic MBR device | |
| CN201309875Y (en) | Recycling device of biological pharmaceutical wastewater | |
| CN203904107U (en) | Treatment system for industrial wastewater of water supply plant | |
| CN113003757A (en) | Integrated rural water supply treatment device and method | |
| CN215592773U (en) | Integrated rural water supply treatment device | |
| CN202543003U (en) | Landfill leachate treatment device | |
| CN214088160U (en) | White spirit effluent disposal system | |
| CN202072579U (en) | Automatic sludge discharging device | |
| CN204714629U (en) | A kind of pharmacy wastewater treatment equipment | |
| CN208151108U (en) | A kind of intermediate water reuse system for recirculated cooling water | |
| CN102976564B (en) | Continuous rural domestic waste water treating device | |
| CN206720990U (en) | A kind of hospital wastewater integral intelligent processing unit | |
| CN201850185U (en) | Domestic water treatment device | |
| CN108101270A (en) | A kind of intermediate water reuse system and processing method for recirculated cooling water | |
| CN209957457U (en) | Novel leachate low-consumption membrane biological reaction system | |
| CN218596200U (en) | Water supply treatment system for water plant | |
| CN220723852U (en) | Integrated MBR sewage treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |