CN214167696U - Landfill leachate fully-quantized processing device - Google Patents
Landfill leachate fully-quantized processing device Download PDFInfo
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- CN214167696U CN214167696U CN202022404664.8U CN202022404664U CN214167696U CN 214167696 U CN214167696 U CN 214167696U CN 202022404664 U CN202022404664 U CN 202022404664U CN 214167696 U CN214167696 U CN 214167696U
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Abstract
The utility model belongs to the technical field of landfill leachate treatment, and discloses a full-quantitative treatment device for landfill leachate, which comprises a dielectric barrier discharge catalytic treatment integrated device, a SBR-MBR biochemical treatment device and a PLC control device; the dielectric barrier discharge and catalysis treatment integrated device is communicated with the SBR-MBR biochemical treatment device through a water conveying pipeline, and the PLC control device is respectively connected with the dielectric barrier discharge and catalysis treatment integrated device and the SBR-MBR biochemical treatment device through a connecting circuit; the medium blocking discharge catalytic treatment integrated device decomposes the organic pollutants which are difficult to be biochemically degraded in the landfill leachate, improves the biodegradability of the landfill leachate, and the SBR-MBR biochemical treatment device can decompose COD and BOD in the biochemical landfill leachate5And nitrogen and phosphorus are removed, so that concentrated solution cannot be generated in the whole process, full-quantitative treatment of the landfill leachate is realized, and the method has the advantages of low investment, low operating cost and the like.
Description
Technical Field
The utility model belongs to the technical field of landfill leachate handles, especially, relate to a landfill leachate quantifys processing apparatus entirely.
Background
The landfill leachate is high-concentration wastewater which is formed by deducting the saturated water holding capacity of garbage and a soil covering layer from water contained in the garbage in a garbage landfill, rain, snow and water entering the landfill and other water and passing through the garbage layer and the soil covering layer. The waste water is affected by various factors such as garbage components, landfill time, climate conditions and the like, so that the composition of the waste water is very complex, the organic pollutants are various, and the waste water generally has the characteristics of high COD, high ammonia nitrogen and high salinity. In addition, most landfill leachate contains various heavy metal ions, and the nutrition proportion of microorganisms such as C, N, P and the like is seriously disordered, so that the landfill leachate has poor biodegradability, large water quality change, deep color and odor. These characteristics make the treatment of landfill leachate a very troublesome problem.
The construction of landfill leachate treatment plants in China begins in the 90 s of the 20 th century, and the treatment of landfill leachate goes through three stages. The first stage is as follows: in the early stage of the 90 s in the 20 th century, the treatment process mainly refers to a treatment method of urban sewage, and mainly adopts a pretreatment and aerobic biological treatment process (such as a flocculation method, a precipitation method and an activated sludge method); and a second stage: in the middle and later stages of the 20 th century 90 s, along with the further understanding of people on the water quality characteristics of landfill leachate, deamination measures are taken in consideration of the water quality uniqueness of the leachate, such as high-concentration ammonia nitrogen, high-concentration organic matters and the like, the adopted treatment process is generally 'pretreatment + anaerobic biological treatment + aerobic biological treatment', and the treatment target of the treatment process mostly reaches the requirement of entering an urban sewage treatment plant, namely the three-level standard of table 1 in the 'domestic garbage landfill pollution control standard' (GB 16889-1997); and a third stage: after 2000 years, newly-built percolate treatment plants are generally far away from urban areas, percolate is not conditionally discharged into urban sewage pipe networks, the discharge standard is strict, the requirement reaches the secondary or even primary discharge standard shown in table 1 in the domestic garbage landfill pollution control Standard (GB16889-1997), the discharge requirement cannot be met by the process of 'pretreatment + anaerobic biological treatment + aerobic biological treatment', and people begin to try to adopt the process of 'pretreatment + biological treatment + advanced treatment'. In 2008, China came out of a stricter 'domestic garbage landfill pollution control standard' (GB16889-2008), standards stipulate that existing and newly-built domestic garbage landfill sites are provided with relatively complete sewage treatment facilities, and leachate can be directly discharged after being treated to reach a discharge limit value stipulated by the standards, so that upgrading and transformation of the prior art and research, development and industrial application of new technologies are further promoted.
The currently running landfill leachate treatment engineering generally adopts a process of pretreatment, biological treatment and advanced treatment, wherein the process of pretreatment, biological treatment and double-membrane (nanofiltration and reverse osmosis) treatment becomes a mainstream combined process. The process solves the problem of advanced treatment of a large amount of refractory substances and toxic substances contained in the leachate, and the effluent has good quality and can reach the discharge standard. However, the process has a fatal weakness in the technology, namely that the water yield of the process is less than 75%, and a concentrated solution with the concentration of more than 25% can be generated, wherein the concentrated solution is wastewater with higher salt content, chromaticity, ammonia nitrogen, total nitrogen and COD, and the treatment difficulty is higher. For the concentrated solution generated by double-membrane treatment, the concentrated solution is returned to a landfill site to make pollutants return to the landfill leachate again, but the system is finally paralyzed along with the continuous accumulation of the pollutants; some methods are evaporative crystallization, but the investment and the operation cost are too large, and the actual operation is not feasible. In addition, the adoption of the double-membrane treatment also has the defects of easy membrane pollution, blockage, complex operation management, large investment, high operating cost and the like.
Through the above analysis, the problems and defects of the prior art are as follows: the double-membrane treatment has low water yield, can generate concentrated solution with higher treatment difficulty, and has the defects of easy membrane pollution, blockage, complex operation management, large investment, high operating cost and the like due to the double-membrane treatment.
The difficulty in solving the above problems and defects is: the adoption of the double-membrane treatment process inevitably produces concentrated solution, so that the full-scale treatment of the landfill leachate cannot be realized, which is a technical bottleneck that the process cannot break through; the membrane pollution and blockage are the problems that in the membrane filtration process, particles, colloidal particles or solute macromolecules in water and a membrane are subjected to physicochemical interaction or mechanical action to cause the membrane pore size to be reduced or blocked due to adsorption and deposition on the surface or in membrane pores, so that the membrane generates an irreversible change phenomenon of permeation flow and separation characteristics, the service life of the membrane can be prolonged only through frequent and complicated cleaning processes, the operation and management are complex, the investment is large, the operation cost is high and the like, and the process cannot overcome the problems.
The significance of solving the problems and the defects is as follows: if the method can replace 'double membranes' in the 'advanced treatment' process to realize the full-scale up-to-standard discharge of the landfill leachate, the problem of concentrated solution is avoided, and the problems of membrane pollution and blockage are avoided, so that the treatment cost of the landfill leachate is greatly reduced, and the health and the sufficient development of the landfill treatment industry in China are promoted.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists, the utility model provides a landfill leachate quantifys processing apparatus entirely.
The utility model discloses a realize like this, a landfill leachate full quantization processing apparatus is provided with:
the device comprises a dielectric barrier discharge and catalysis treatment integrated device, an SBR-MBR biochemical treatment device and a PLC control device;
the integrated device for dielectric barrier discharge and catalytic treatment is communicated with the SBR-MBR biochemical treatment device through a water conveying pipeline, and the PLC control device is respectively connected with the integrated device for dielectric barrier discharge and catalytic treatment and the SBR-MBR biochemical treatment device through a connecting circuit;
further, the dielectric barrier discharge catalysis treatment integrated device is provided with a reaction tank, a discharge catalysis reactor is arranged in the reaction tank, a catalyst filling layer is filled at the lower side of the discharge catalysis reactor in the reaction tank, the reaction tank is communicated with a gas-liquid separation tank through a water conveying pipeline, and the gas-liquid separation tank is communicated with a tail gas quencher through a gas conveying pipeline;
the discharge catalytic reactor is communicated with an air source through an air conveying pipeline, and the air source is connected with the PLC control device through a connecting circuit;
the discharge catalytic reactor is connected with a high-voltage power supply through a connecting circuit, and the high-voltage power supply is connected with the PLC control device through the connecting circuit;
further, the reaction tank comprises a reaction tank body, a reaction tank body flange, a flange silica gel pad and a reaction tank base; the upper end of the reaction tank body is provided with a reaction tank body flange, and a flange silica gel pad is padded on the reaction tank body flange; the lower end of the reaction tank body is fixed on a reaction tank base, a water inlet and a water outlet are formed in the middle of the reaction tank base, and a reaction tank water inlet control valve and a reaction tank water outlet control valve are respectively installed on the water inlet and the water outlet;
further, the discharge catalytic reactor comprises a reactor fixing frame, a discharge tube, a medium tube, an upper fixing disc, a lower fixing disc, an upper fixing disc air hole, a lower fixing disc air hole, an air inlet air chamber top cover air hole, an air outlet air chamber bottom cover, an air outlet air chamber bottom cover air hole, an aeration disc, a stainless steel connecting tube, a catalyst supporting net, a high-voltage wire, a conducting layer and a grounding wire;
the reactor fixing frame is provided with a coaxial stainless steel round pipe and a stainless steel fixing frame flange, the stainless steel fixing frame flange is arranged at the upper end of the coaxial stainless steel round pipe and used for fixing the discharge catalytic reactor in the reaction tank body, and the surface of the stainless steel fixing frame flange is provided with a drain hole;
an upper fixing disc and a lower fixing disc are fixed at the upper end and the lower end of the inside of the coaxial stainless steel round tube respectively through threads, a discharge tube is clamped between the upper fixing disc and the lower fixing disc, and a medium tube is sleeved on the outer side of the discharge tube;
the upper fixing disc air hole and the lower fixing disc air hole are communicated with a gap between the discharge tube and the medium tube;
an air inlet chamber top cover is fixed at the inner upper end of the coaxial stainless steel round pipe through threads, an air inlet chamber is clamped between the air inlet chamber top cover and the upper fixed disk, an air inlet chamber top cover air hole is formed in the air inlet chamber top cover, and the air inlet chamber top cover air hole is communicated with an air source through an air conveying pipeline; the lower end of the inner part of the coaxial stainless steel round pipe is fixedly provided with an air outlet air chamber bottom cover through threads, an air outlet air chamber is clamped between the air outlet air chamber bottom cover and the lower fixing disc, air outlet air chamber bottom cover air holes are formed in the air outlet air chamber bottom cover, the lower ends of the air outlet air chamber bottom cover air holes are communicated with the aeration disc through stainless steel connecting pipes, and the aeration disc is located on the lower side of the catalyst support net.
Further, the SBR-MBR biochemical treatment device is an integrated SBR-MBR biochemical treatment device, and the integrated SBR-MBR biochemical treatment device consists of an integrated SBR-MBR reaction tank, an immersed MBR membrane component, an MBR pump and a sludge treatment device;
the integrated SBR-MBR reaction tank is provided with a water inlet and a sludge discharge port, and is also provided with an SBR blower, an SBR aeration disc and an SBR sludge discharge pump;
the water inlet of the integrated SBR-MBR reaction tank is respectively communicated with a water discharge control valve of a gas-liquid separation tank and a water discharge control valve of the reaction tank of the medium barrier discharge catalysis treatment integrated device; the SBR blast air is used for oxygenating the integrated SBR-MBR reaction tank through an SBR aeration disc arranged at the bottom of the integrated SBR-MBR reaction tank, and an SBR sludge discharge pump is communicated with a sludge discharge port of the integrated SBR-MBR reaction tank and is used for periodically discharging residual sludge in the MBR reaction tank;
the immersed MBR membrane module is immersed in the integrated SBR-MBR reaction tank, and a drain pipe of the immersed MBR membrane module is communicated with an MBR pump and is used for discharging supernatant in the integrated SBR-MBR reaction tank;
the membrane used by the immersed MBR membrane module is a hollow fiber membrane, a flat membrane, a ceramic membrane and the like;
the sludge treatment device is used for treating excess sludge discharged from the integrated SBR-MBR reaction tank and consists of a sludge tank, a dosing tank, a stirrer and a filter press; the sludge pond is provided with mud entry, dosing port and row mud mouth, and mud entry and SBR sludge discharge pump intercommunication, dosing port and dosing tank intercommunication, agitator are arranged in the sludge pond for mixed medicament and excess sludge, row mud mouth links to each other with the pressure filter.
Further, the SBR-MBR biochemical treatment device is a split SBR-MBR biochemical treatment device, and the split SBR-MBR biochemical treatment device consists of a SBR reaction tank, an MBR pump, an external MBR membrane component and a sludge treatment device;
the SBR reaction tank is provided with an SBR water inlet and an SBR sludge discharge port, and is also provided with an SBR blower, an SBR aeration disc, an SBR decanter and an SBR sludge discharge pump;
the water inlet of the SBR is respectively communicated with a water discharge control valve of a gas-liquid separation tank and a water discharge control valve of a reaction tank of the dielectric barrier discharge catalysis treatment integrated device; the SBR blower charges oxygen into the SBR reaction tank through an SBR aeration disc arranged at the bottom of the SBR reaction tank; the SBR decanter is arranged in the SBR reaction tank, a water outlet of the SBR decanter is sequentially communicated with the MBR pump and the external MBR membrane component through a water conveying pipeline, supernatant in the SBR reaction tank is injected into a water inlet of the external MBR membrane component through the MBR pump by the SBR decanter, and water treated by the external MBR membrane is discharged from a water outlet of the external MBR membrane component; the SBR sludge discharge port is sequentially connected with a SBR sludge discharge pump and a sludge treatment device through a sludge discharge pipeline and is used for periodically discharging residual sludge in the SBR reaction tank;
the membrane used by the external MBR membrane component is a tubular membrane or a column type hollow fiber membrane;
the sludge treatment device is used for treating residual sludge discharged from the SBR reaction tank and consists of a sludge tank, a medicine adding tank, a stirrer and a filter press; the sludge pond is provided with mud entry, dosing port and row mud mouth, and mud entry and SBR sludge discharge pump intercommunication, dosing port and dosing tank intercommunication, agitator are arranged in the sludge pond for mixed medicament and excess sludge, row mud mouth links to each other with the pressure filter.
Further, the PLC controlling means outside is provided with air supply control switch, tail gas quencher control switch, reaction tank water intake control valve control switch, gas-liquid separation pond drainage control switch, high voltage power supply control switch, SBR air blower control switch, MBR pump control switch, SBR sludge discharge pump control switch, sludge treatment device operation switch and reaction tank drainage control valve control switch.
Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are: the utility model discloses a dielectric barrier discharge catalytic treatment integrated device does not receive the influence of factors such as quality of water, water yield, can effectively decompose the difficult biochemical degradation organic pollutant in landfill leachate, improves landfill leachate's biodegradability, COD, BOD among SBR-MBR biochemical treatment device the landfill leachate that can be biochemical, SBR-MBR biochemical treatment device5And nitrogen and phosphorus are removed, concentrated solution cannot be generated in the whole process, full-scale treatment of the landfill leachate is realized, the technical short plate of membrane treatment of the landfill leachate is effectively solved, the method has the advantages of small investment, low operating cost and the like, the PLC control device realizes the operation of the whole process, and the operation and the management are simple and reliable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a schematic diagram of the connection of the full-scale treatment device for landfill leachate provided by the embodiment of the utility model.
Fig. 2 is a schematic connection diagram of the integrated device for dielectric barrier discharge catalytic treatment according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a discharge catalytic reactor according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an upper fixing tray provided in an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a lower fixing tray according to an embodiment of the present invention.
In the figure: 1. a dielectric barrier discharge catalytic treatment integrated device; 101. a reaction tank; 101-1, a reaction tank body; 101-2, a reaction tank body flange; 101-3, flange silica gel pad; 101-4, a reaction tank base; 101-5 parts of water inlet; 101-6 and a water outlet; 102. a discharge catalytic reactor; 102-1-1, coaxial stainless steel round pipes; 102-1-2, stainless steel fixing frame flange; 102-1-3, a drain hole; 102-2, a discharge tube; 102-3, a medium pipe; 102-4, an upper fixed disc; 102-5, a lower fixed disc; 102-6, fixing air holes on the disc; 102-7, lower fixing disc air holes; 102-8, a top cover of the air inlet air chamber; 102-9, an air inlet chamber; 102-10, air inlet air chamber top cover air holes; 102-11, an air outlet air chamber bottom cover; 102-12, an air outlet chamber; 102-13, air holes at the bottom cover of the air outlet chamber; 102-14, an aeration disc; 102-15, stainless steel connecting pipes; 102-16, catalyst supporting net; 102-17, high-voltage line; 102-18, a conductive layer; 102-19, a grounding wire; 103. a catalyst; 104. a high voltage power supply; 105. a gas source; 106. a gas-liquid separation tank; 107. a tail gas quencher; 2. SBR-MBR biochemical treatment device; 201. an integrated SBR-MBR reaction tank; 202. an immersed MBR membrane component; 203. an MBR pump; 204. a sludge treatment unit; 3. a PLC control device; 301. an air source control switch; 302. a tail gas quencher control switch; 303. the control switch of the water inlet control valve of the reaction tank; 304. a drainage control switch of the gas-liquid separation tank; 305. a high voltage power supply control switch; 306. a SBR blower control switch; 307. an MBR pump control switch; 308. a control switch of the SBR dredge pump; 309. the sludge treatment device runs a switch; 310. the control switch of the drainage control valve of the reaction tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
To the problem that prior art exists, the utility model provides a landfill leachate quantifys processing apparatus entirely, it is right to combine the figure below the utility model discloses do detailed description.
As shown in figures 1 to 5, the embodiment of the utility model provides a landfill leachate full-quantization processing device, including dielectric barrier discharge catalysis processing integrated device 1, SBR-MBR biochemical treatment device 2 and PLC controlling means 3.
The dielectric barrier discharge catalysis treatment integrated device 1 is composed of a reaction tank 101, a discharge catalysis reactor 102, a catalyst 103, a high-voltage power supply 104, a gas source 105, a gas-liquid separation tank 106 and a tail gas quencher 107.
The reaction tank body 101-1 of the reaction tank 101 is a plexiglass circular tube with the height of 200cm, the inner diameter of 26cm and the wall thickness of 0.5cm, and is fixed at 316 through a flange and a silica gel pad#The reaction tank base 101-4 is made of stainless steel, the reaction tank base 101-4 is provided with a water inlet 101-5 and a water outlet 101-6, the water inlet 101-5 and the water outlet 101-6 are respectively provided with a reaction tank water inlet control valve and a reaction tank water outlet control valve, the reaction tank water inlet control valve and the reaction tank water outlet control valve are electromagnetic valves, and switches are controlled by a PLC control device 3.
The discharge catalytic reactor 102 comprises a reactor fixing frame 102-1, a discharge tube 102-2, a medium tube 102-3, an upper fixing disc 102-4, a lower fixing disc 102-5, an upper fixing disc air hole 102-6, a lower fixing disc air hole 102-7, an air inlet air chamber top cover 102-8, an air inlet air chamber 102-9, an air inlet air chamber top cover air hole 102-10, an air outlet air chamber bottom cover 102-11, an air outlet air chamber 102-12, an air outlet air chamber bottom cover air hole 102-13, an aeration disc 102-14, a stainless steel connecting tube 102-15, a catalyst support net 102-16, a high-voltage wire 102-17, a conductive layer 102-18 and a grounding wire 102-19. The coaxial stainless steel circular tube 102-1-1 of the reactor fixing frame 102-1 is 316#The stainless steel round tube is 120cm in length, 12cm in outer diameter, 0.5cm in wall thickness, the middle part of the tube wall, which is 15cm away from the upper end and the lower end of the coaxial stainless steel round tube 102-1-1, is hollowed, the hollowing rate is 80%, and the inner walls of the upper end and the lower end of the coaxial stainless steel round tube 102-1-1 are respectively hollowedThe vehicle is provided with an internal thread with the length of 15cm, the upper end of a coaxial stainless steel round pipe 102-1-1 is provided with a stainless steel fixing frame flange 102-1-2 used for fixing the reactor fixing frame 102-1 in the reaction tank 101, and the stainless steel fixing frame flange 102-1-2 is provided with 2 drain holes 102-1-3; the discharge tube 102-2 is a coaxial quartz glass circular tube with thick middle part and thin two ends, the total length is 100cm, the wall thickness is 0.3cm, the outer diameters of the two ends are 6cm, the length is 15cm, the middle outer diameter is 10cm, the length is 70cm, and a conductive layer 102-18 with 0.01cm is coated on the outer wall of the middle part of the discharge tube 102-2; the medium tube 102-3 is a coaxial quartz glass circular tube with the length of 95cm, the inner diameter of 10.3cm and the wall thickness of 0.3 cm. As shown in fig. 2, 3, 4 and 5, the discharge tube 102-2 and the medium tube 102-3 are fixed in the coaxial stainless steel circular tube 102-1-1 of the reactor holder 102-1 by the upper fixing disk 102-4 and the lower fixing disk 102-5, and the discharge tube 102-2, the medium tube 102-3 and the coaxial stainless steel circular tube 102-1-1 are kept coaxial, and the air gap distance between the outer wall of the middle part of the discharge tube 102-2 and the inner wall of the medium tube 102-3 is 0.3 cm; 8 upper fixed disk air holes 102-6 and lower fixed disk air holes 102-7 are respectively arranged on the upper fixed disk 102-4 and the lower fixed disk 102-5 and are used for gas to enter an air gap between the discharge tube 102-2 and the medium tube 102-3; the cylindrical air inlet chamber top cover 102-8 is screwed to the upper end of a coaxial stainless steel circular tube 102-1-1 of the reactor fixing frame 102-1 through the outer wall threads of the cylindrical air inlet chamber top cover, an air inlet chamber 102-9 is formed between the cylindrical air inlet chamber top cover 102-8 and the upper fixing disc 102-4, and 4 air inlet chamber top cover air holes 102-10 are formed in the air inlet chamber top cover 102-8 and used for allowing air to enter the air inlet chamber 102-9; the cylindrical air outlet chamber bottom cover 102-11 is screwed to the lower end of the coaxial stainless steel circular tube 102-1-1 of the reactor fixing frame 102-1 through the outer wall threads of the cylindrical air outlet chamber bottom cover, an air outlet chamber 102-12 is formed between the cylindrical air outlet chamber bottom cover and the lower fixing disc 102-5, and 1 air outlet chamber bottom cover air hole 102-13 for air to enter the aeration disc 102-14 is formed in the air outlet chamber bottom cover 102-11; the air holes 102-13 of the bottom cover of the air outlet chamber are communicated with the aeration disc 102-14 through a stainless steel connecting pipe 102-15 with the outer diameter of 2.5cm and the length of 50 cm; the catalyst supporting net 102-16 is a hollow coaxial cylindrical barrel with the inner diameter of 2.5cm, the outer diameter of 26cm and the height of 30cm, and is fixed between a stainless steel connecting pipe 102-15 which is 5cm above the aeration disc 102-14 and the inner wall of the reaction tank 101; the aeration discs 102-14 are hemispherical microporous titanium aeration discs with the diameter of 15cm and the pore diameter of 0.22-100 mu m; one end of the high voltage line 102-17 is connected toThe secondary air inlet chamber penetrates through the top cover 102-8 of the air inlet chamber, the air inlet chamber 102-9 and the upper fixed disc 102-4 to be connected with the conductive layer 102-18 on the outer wall of the discharge tube 102-2, and the other end of the secondary air inlet chamber is connected with the high-voltage output end of the high-voltage power supply 104; one end of the grounding wire 102-19 is simultaneously connected with the coaxial stainless steel circular tube 102-1-1 and the low-voltage output end of the high-voltage power supply 104, and the other end is grounded.
The catalyst support 102-16 was filled with 3kg of a catalyst 103, which was purchased from Shandong Shanghan Ruan environmental science and technology Co.
The high-voltage power supply 104 is an alternating-current power supply, has an output frequency of 6kHz and an adjustable output voltage of 0-20 kV, and is purchased from Dai-lian-good ocean science and technology Limited.
The gas source 105 adopts liquid oxygen, the gas pressure is 0.04MPa, and the gas flow is 1m3/h。
The gas-liquid separation tank 106 is a cylindrical stainless steel tank having an inner diameter of 60cm and a height of 150 cm.
The tail gas quencher 107 is purchased from ozone high-tech limited, Shuimei, Beijing Shanmei.
The SBR-MBR biochemical treatment device 2 is integrated and comprises an integrated SBR-MBR reaction tank 201, an immersed MBR membrane module 202, an MBR pump 203 and a sludge treatment unit 204, wherein the SBR biochemical treatment process comprises four stages of water inlet, aeration, standing and water drainage, and the time of each stage is 2h, 6h, 1h and 1 h.
The integrated SBR-MBR reaction tank 201 is an organic glass tank with the inner diameter of 26cm and the height of 100cm, is provided with a water inlet and a sludge discharge port, and is simultaneously provided with an SBR blower and an SBR aeration disc; the water inlet is respectively communicated with a water discharge control valve of a gas-liquid separation tank 106 and a water discharge control valve of a reaction tank 101 of the dielectric barrier discharge catalysis treatment integrated device 1; the SBR blower is an ACO-012 type electromagnetic oxygenation air pump, the flow rate is 143L/min, 1 SBR aeration disc arranged at the bottom of the integrated SBR-MBR reaction tank 201 is used for oxygenating the integrated SBR-MBR reaction tank 201, and the dissolved oxygen in the water is maintained to be more than 2 mg/L; the immersed MBR membrane module 202 is immersed in the SBR-MBR reaction tank 201, a drain pipe of the immersed MBR membrane module 202 is communicated with an MBR pump 203 and is used for draining water in the integrated SBR-MBR reaction tank 201, and the membrane used by the immersed MBR membrane module 202 is a ceramic membrane and is purchased from Jiangsu New-Tech Membrane science and technology company Limited.
In this embodiment, the sludge treatment apparatus 204 is not used because the sludge production amount is small.
The utility model discloses when using, when the manual control mode through PLC controlling means 3 realized this process flow, specific step is as follows:
s1, after the circuit, the water path and the gas path are connected, 3kg of catalyst 103 is filled in a catalyst support net 102-16, a gas source control switch 301 and a tail gas quencher control switch 302 of a PLC control device 3 are sequentially started, gas in a gas source 105 is introduced into a discharge catalytic reactor 102 of a dielectric barrier discharge catalytic treatment integrated device 1, the gas is discharged from a water discharge hole 102-1-3 of a reactor fixing frame 102-1 through a reaction tank 101 and enters a gas-liquid separation tank 106, and finally the gas is discharged from an exhaust port 106-2 of the gas-liquid separation tank 106 and passes through a tail gas quencher 107;
s2, starting a control switch 303 of a water inlet control valve 101-7 of a reaction tank 101 and a control switch 304 of a water discharge control valve 106-4 of a gas-liquid separation tank 106 of the PLC control device 3, and injecting the landfill leachate after the pretreatment and biological treatment into the reaction tank 101 of the dielectric barrier discharge catalytic treatment integrated device 1 at a flow rate of 50L/h;
s3, after the reaction tank 101 is filled with water, a high-voltage power supply control switch 305 of the PLC control device 3 is turned on, the high-voltage power supply 104 inputs energy into the discharge catalytic reactor 102, the discharge catalytic reactor 102 discharges to treat the landfill leachate, and meanwhile, the SBR biochemical treatment process enters a water inlet stage;
s4, after the water inlet stage of the SBR biochemical treatment process is completed, starting an SBR blower control switch 306 of the PLC control device 3, oxygenating the integral SBR-MBR reaction tank 201, maintaining the dissolved oxygen in the water at more than 2mg/L, starting an aeration stage of the SBR biochemical treatment process, after the aeration stage is completed, closing the SBR blower control switch 306 of the PLC control device 3, starting a standing stage of the SBR biochemical treatment process, after the standing stage is completed, starting an MBR pump 203 control switch 307 of the PLC control device 3 to drain water, after the water drainage stage is completed, closing an MBR pump 203 control switch 307 of the PLC control device 3, repeatedly and circularly operating the water inlet, aeration, standing and MBR water drainage processes of the SBR biochemical treatment process, when the integral SBR-MBR reaction tank 201 needs to drain sludge, starting an SBR sludge pump control switch 308 of the PLC control device 3 to drain sludge, and after the sludge discharge is finished, the control switch 308 of the SBR sludge discharge pump 205-5 of the PLC control device 3 is closed.
This embodiment is gone on in certain landfill leachate factory in certain city of a certain province, and landfill leachate stoste gets into after "preliminary treatment + biochemical treatment" technology the utility model discloses the device, as shown in table 1, getting into the utility model discloses in the main quality of water index before the device, colourity, CODCrThe number of the flora of ammonia nitrogen, total phosphorus and excrement coliform is higher than the discharge standard specified in the pollution control Standard of municipal solid waste landfill (GB16889-2008), particularly the chromaticity and CODCrIs far higher than the discharge standard, and other water quality indexes, such as suspended matters, heavy metals and the like are all below the discharge standard. And after the whole process is stable in operation, periodically collecting a drainage water sample for analysis, wherein the main indexes of the specific drainage water sample are shown in table 1.
TABLE 1 Main Water quality index before and after treatment by the device of the utility model
As can be seen from Table 1, the main water quality indexes of the landfill leachate before entering the device are all higher than the discharge standard, after the landfill leachate is treated by the device, the main water quality indexes are below the discharge standard, and the effluent quality is very stable. It can be seen through this embodiment that this device does not produce the concentrate, has effectively solved the landfill leachate and has adopted the technical short board that "two membranes" were handled, realizes the full quantification of landfill leachate discharge up to standard, has advantages such as operation management is simple, the investment is little, the working costs is low simultaneously, can replace "two membranes" in the current technology "advanced treatment" process.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.
Claims (8)
1. The utility model provides a landfill leachate quantifys processing apparatus entirely, its characterized in that, landfill leachate quantifys processing apparatus entirely is provided with:
the device comprises a dielectric barrier discharge and catalysis treatment integrated device, an SBR-MBR biochemical treatment device and a PLC control device;
the integrated device for dielectric barrier discharge and catalytic treatment is communicated with the SBR-MBR biochemical treatment device through a water conveying pipeline, and the PLC control device is respectively connected with the integrated device for dielectric barrier discharge and catalytic treatment and the SBR-MBR biochemical treatment device through a connecting circuit;
the dielectric barrier discharge catalysis treatment integrated device is provided with a reaction tank, a discharge catalysis reactor is arranged in the reaction tank, a catalyst filling layer is filled at the lower side of the discharge catalysis reactor in the reaction tank, the reaction tank is communicated with a gas-liquid separation tank through a water conveying pipeline, and the gas-liquid separation tank is communicated with a tail gas quencher through a gas conveying pipeline;
the discharge catalytic reactor is communicated with an air source through an air conveying pipeline, and the air source is connected with the PLC control device through a connecting circuit;
the discharging catalytic reactor is connected with a high-voltage power supply through a connecting circuit, and the high-voltage power supply is connected with the PLC control device through the connecting circuit.
2. The apparatus for the full-scale treatment of landfill leachate according to claim 1, wherein the reaction tank comprises a reaction tank body, a reaction tank body flange, a flange silica gel pad and a reaction tank base; the upper end of the reaction tank body is provided with a reaction tank body flange, and a flange silica gel pad is padded on the reaction tank body flange; the lower end of the reaction tank body is fixed on a reaction tank base, a water inlet and a water outlet are formed in the middle of the reaction tank base, and a reaction tank water inlet control valve and a reaction tank water outlet control valve are respectively installed on the water inlet and the water outlet.
3. The apparatus for the full-scale treatment of landfill leachate according to claim 1, wherein the discharge catalytic reactor is provided with a reactor fixing frame, the reactor fixing frame is provided with a coaxial stainless steel circular tube and a stainless steel fixing frame flange, the stainless steel fixing frame flange is installed at the upper end of the coaxial stainless steel circular tube and used for fixing the discharge catalytic reactor in the reaction tank body, and the surface of the stainless steel fixing frame flange is provided with a drain hole;
an upper fixing disc and a lower fixing disc are fixed at the upper end and the lower end of the inside of the coaxial stainless steel round tube respectively through threads, a discharge tube is clamped between the upper fixing disc and the lower fixing disc, and a medium tube is sleeved on the outer side of the discharge tube;
the upper fixing disc air hole and the lower fixing disc air hole are formed in the upper fixing disc and the lower fixing disc respectively, and are communicated with a gap between the discharge tube and the medium tube.
4. The apparatus for the full-scale treatment of landfill leachate according to claim 3, wherein the top cover of the air inlet chamber is fixed at the inner upper end of the coaxial stainless steel round pipe through threads, an air inlet chamber is clamped between the top cover of the air inlet chamber and the upper fixed disk, the top cover of the air inlet chamber is provided with air holes of the top cover of the air inlet chamber, and the air holes of the top cover of the air inlet chamber are communicated with an air source through air pipelines; the lower end of the inner part of the coaxial stainless steel round pipe is fixedly provided with an air outlet air chamber bottom cover through threads, an air outlet air chamber is clamped between the air outlet air chamber bottom cover and the lower fixing disc, air outlet air chamber bottom cover air holes are formed in the air outlet air chamber bottom cover, the lower ends of the air outlet air chamber bottom cover air holes are communicated with the aeration disc through stainless steel connecting pipes, and the aeration disc is located on the lower side of the catalyst support net.
5. The apparatus of claim 1, wherein the SBR-MBR biochemical treatment device is an integrated SBR-MBR biochemical treatment device, and the integrated SBR-MBR biochemical treatment device consists of an integrated SBR-MBR reaction tank, an immersed MBR membrane module, an MBR pump and a sludge treatment device;
the integrated SBR-MBR reaction tank is provided with a water inlet and a sludge discharge port, and is also provided with an SBR blower, an SBR aeration disc and an SBR sludge discharge pump;
the water inlet of the integrated SBR-MBR reaction tank is respectively communicated with a water discharge control valve of a gas-liquid separation tank and a water discharge control valve of the reaction tank of the medium barrier discharge catalysis treatment integrated device; the SBR blast air is used for oxygenating the integrated SBR-MBR reaction tank through an SBR aeration disc arranged at the bottom of the integrated SBR-MBR reaction tank, and an SBR sludge discharge pump is communicated with a sludge discharge port of the integrated SBR-MBR reaction tank;
and the immersed MBR membrane module is immersed in the integrated SBR-MBR reaction tank, and a drain pipe of the immersed MBR membrane module is communicated with the MBR pump.
6. The apparatus of claim 1, wherein the SBR-MBR biochemical treatment apparatus is a separate SBR-MBR biochemical treatment apparatus, and the separate SBR-MBR biochemical treatment apparatus comprises a SBR reaction tank, an MBR pump, an external MBR membrane assembly and a sludge treatment apparatus;
the SBR reaction tank is provided with an SBR water inlet and an SBR sludge discharge port, and is also provided with an SBR blower, an SBR aeration disc, an SBR decanter and an SBR sludge discharge pump;
the water inlet of the SBR is respectively communicated with a water discharge control valve of a gas-liquid separation tank and a water discharge control valve of a reaction tank of the dielectric barrier discharge catalysis treatment integrated device; the SBR blower charges oxygen into the SBR reaction tank through an SBR aeration disc arranged at the bottom of the SBR reaction tank; the SBR decanter is arranged in the SBR reaction tank, and a water outlet of the SBR decanter is sequentially connected with the MBR pump and the external MBR membrane component through a water conveying pipeline; the SBR sludge discharge port is connected with a SBR sludge discharge pump and a sludge treatment device in sequence through a sludge discharge pipeline.
7. The apparatus for the quantitative processing of landfill leachate according to claim 5, wherein the sludge processing apparatus is provided with a sludge tank, a dosing tank, a stirrer and a filter press; the sludge pond is provided with mud entry, dosing port and row mud mouth, and mud entry and SBR sludge discharge pump intercommunication, dosing port and dosing tank intercommunication, the agitator is arranged in the sludge pond, and the row mud mouth links to each other with the pressure filter.
8. The apparatus of any one of claims 1 to 7, wherein an air source control switch, a tail gas quencher control switch, a water inlet control valve control switch, a gas-liquid separation tank drainage control switch, a high voltage power supply control switch, an SBR blower control switch, an MBR pump control switch, an SBR sludge discharge pump control switch, a sludge treatment apparatus operation switch and a reaction tank drainage control valve control switch are arranged outside the PLC control device.
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| CN202022404664.8U CN214167696U (en) | 2020-10-26 | 2020-10-26 | Landfill leachate fully-quantized processing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112142271A (en) * | 2020-10-26 | 2020-12-29 | 西北农林科技大学 | Full-quantitative treatment system, method and application of landfill leachate |
| CN115520940A (en) * | 2022-10-14 | 2022-12-27 | 常州大学 | Electrocatalytic oxidation reactor for enhancing oxygen utilization |
-
2020
- 2020-10-26 CN CN202022404664.8U patent/CN214167696U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112142271A (en) * | 2020-10-26 | 2020-12-29 | 西北农林科技大学 | Full-quantitative treatment system, method and application of landfill leachate |
| CN115520940A (en) * | 2022-10-14 | 2022-12-27 | 常州大学 | Electrocatalytic oxidation reactor for enhancing oxygen utilization |
| CN115520940B (en) * | 2022-10-14 | 2024-03-19 | 常州大学 | Electrocatalytic oxidation reactor for enhanced oxygen utilization |
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