Garbage penetrating fluid crystallization treatment device

Abstract

The invention provides a garbage penetrating fluid crystallization treatment device which comprises a filter, a pretreatment mechanism and a circulation treatment mechanism, the interior of the filter is connected with a conduction pipe through an output pump, and the conduction pipe is connected with the interior of the pretreatment mechanism in a conduction mode so that penetrating fluid in the filter can be input into the pretreatment mechanism; the pretreatment mechanism is used for carrying out anaerobic pretreatment on penetrating fluid, the circulating treatment mechanism is connected with the output end of the pretreatment mechanism in a conducting mode, the circulating treatment mechanism is used for carrying out circulating anaerobic treatment on the pretreated penetrating fluid, and the outer portions of the pretreatment mechanism and the circulating treatment mechanism are further connected with a chemical adding mechanism in a conducting mode. The dosing mechanism is used for adding an anaerobic modifier into the pretreatment mechanism and the circulating treatment mechanism. Organic pollutants in the garbage penetrating fluid can be effectively removed, the situation that the equipment is blocked due to crystallization in the equipment is reduced, and the treatment efficiency of the garbage penetrating fluid is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a garbage leachate crystallization treatment device. Background Art

[0002] During the treatment of leachate from a garbage power plant, the following problems are common during operation, due to large fluctuations in water quality, complex components, high suspended solids, ammonia nitrogen, salt, COD value, low B / C value, and the presence of animal and vegetable oils, making it difficult for the system to maintain long-term stable and safe operation. Since the most suitable temperature for medium-temperature anaerobic reaction is 30-40℃, the pH value of the reflux leachate rises to the range of 7.5-8.2, causing the micro-fig salt in the leachate to quickly destabilize in the system, forming a black crystalline mixture of magnesium ammonium phosphate hexahydrate, magnesium sulfate, calcium sulfate, calcium carbonate, magnesium carbonate, etc., which blocks the pipe network system of the anaerobic reactor, causing uneven water distribution, biased flow short circuit, and poor hydraulic stirring, reducing the biochemical efficiency of the anaerobic reactor and gradually losing its effective treatment function. For example, crystallization may occur in external water inlet and outlet pipes, circulation main pipes, distributors, distribution pipes, circulation pump impellers, valves, etc., and crystallization may block or even harden the internal distribution water inlet, bottom sludge layer, sludge outlet, filler, three-phase separator, overflow weir, pool wall, etc., causing the UASB system to reduce its processing load and require frequent minor repairs and replacement of the pipe network. The system must be shut down for major repairs and pool cleaning and restart every 2-3 years, incurring large repair and maintenance costs, and facing various maintenance safety and environmental protection pressures. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a garbage leachate crystallization treatment device for solving the problem of blockage caused by crystallization in the leachate treatment process in the prior art.

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention provides a garbage leachate crystallization treatment device, comprising a filter, a pretreatment mechanism and a circulation treatment mechanism, wherein the filter is connected to a conducting pipe through an output pump, and the conducting pipe is connected to the pretreatment mechanism to input the leachate in the filter into the pretreatment mechanism, and the pretreatment mechanism is used to perform anaerobic pretreatment on the leachate, and the circulation treatment mechanism is connected to the output end of the pretreatment mechanism, and the circulation treatment mechanism is used to perform cyclic anaerobic treatment on the leachate after pretreatment, and the pretreatment mechanism and the circulation treatment mechanism are also connected to a dosing mechanism outside, and the dosing mechanism is used to add an anaerobic modifier into the pretreatment mechanism and the circulation treatment mechanism; Among them, the pretreatment mechanism includes a pretreatment tank, a pretreatment reactor is installed inside the pretreatment tank, the top of the pretreatment reactor is conductively connected to the circulation treatment mechanism through a drainer to transport the permeate after pretreatment to the inside of the circulation treatment mechanism, the dosing mechanism includes a first dosing sleeve installed at the top of the side of the pretreatment tank and a second dosing sleeve installed at the bottom of the side, a plurality of groups of first telescopic sleeves conductively connected to the first dosing sleeve are evenly installed at the top of the inner wall of the pretreatment tank, a plurality of groups of second telescopic sleeves conductively connected to the second dosing sleeve are evenly installed at the bottom of the inner wall of the pretreatment tank, and each group of the first telescopic sleeves and the second telescopic sleeves are conductively connected to the end of the dosing nozzle, and the first telescopic sleeve and the second telescopic sleeve are both arranged below the pretreatment reactor.

[0005] In one embodiment of the present invention, a fixing seat is installed at the outer end of the dosing nozzle, one end of the fixing seat is connected to an electric push rod, the end of the electric push rod is fixedly connected to the inner wall of the pretreatment tank through a connecting frame, and the multiple electric push rods are controlled by a controller to achieve synchronous movement to adjust the height of the dosing nozzle.

[0006] In one embodiment of the present invention, a medicine-loading tank arranged outside the pretreatment tank is installed between the first medicine-loading sleeve and the second medicine-loading sleeve, one end of the medicine-loading tank is conductively connected to the first medicine-loading sleeve through a first delivery pipe, and the other end is conductively connected to the second medicine-loading sleeve through a second delivery pipe. The interior of the fixing seat is a hollow structure and is provided with a flow regulating mechanism, and the flow regulating mechanism is used to adjust the output rate of the anaerobic modifier sprayed from the medicine-loading nozzle.

[0007] In one embodiment of the present invention, the flow regulating mechanism includes a collecting box arranged inside the fixed seat, one side of the collecting box is conductively connected to the dosing nozzle, a drainage column is connected to the top of the collecting box, the drainage column is respectively conductively connected to the first delivery pipe and the second delivery pipe at corresponding positions, the first electric lead screw and the second electric lead screw are respectively connected on both sides of the fixed seat, a blocking plate is installed inside the drainage column, a valve port is provided inside the blocking plate, and active grooves conductive with the valve port are provided on both sides of the outside of the drainage column, the first electric lead screw and the second electric lead screw are respectively connected to the first valve plate and the second valve plate inserted into the active groove by metal columns at one end inside, the first valve plate and the second valve plate completely block the active groove when they are fitted together, and the inner wall of the valve port is provided with a sliding groove fitted with the side walls of the first valve plate and the second valve plate.

[0008] In one embodiment of the present invention, a plurality of protrusions are provided on one end of the first valve plate facing the second valve plate, a plurality of grooves corresponding to the protrusions and matching in size are provided on one end of the second valve plate facing the first valve plate, and sealing strips are provided on the inner walls of the grooves, and the movement amplitude of the first electric lead screw each time it rotates is less than two-thirds of the movement amplitude of the second electric lead screw each time it rotates.

[0009] In one embodiment of the present invention, a detection strip is also installed inside the pretreatment tank, and a plurality of sensor groups are installed on the upper and lower surfaces of the detection strip, and the sensor groups include a COD sensor, a pH sensor and a position sensor, the COD sensor is used to detect the COD concentration inside the pretreatment tank, the pH sensor is used to detect the pH value inside the pretreatment tank, and the position sensor is used to detect the position information corresponding to the detection strip at different positions, and the controller is used to receive the detection results of the sensor group, and in combination with the corresponding position information, adjust the length of the electric push rod to change the position of the dosing nozzle, and adjust the first electric lead screw and the second electric lead screw to change the opening size of the valve port.

[0010] In one embodiment of the present invention, the pretreatment reactor includes a first sludge layer arranged at the bottom end of the pretreatment tank and a first three-phase separator arranged at the top end of the pretreatment tank, the first dosing sleeve and the second dosing sleeve are both located between the first sludge layer and the first three-phase separator, a drainage port connected to the drainer is provided at the top of the first three-phase separator, and a first exhaust port is provided on the side of the first three-phase separator.

[0011] In one embodiment of the present invention, the circulation treatment mechanism includes a circulation treatment tank conductively connected to the drainer, a second sludge layer is arranged at the bottom of the circulation treatment tank, a reactor is arranged at the top of the circulation treatment tank, the reactor includes a plurality of lower isolation seats and a plurality of upper isolation seats arranged in parallel installed in the circulation treatment tank, a lower through hole is formed between adjacent lower isolation seats, and an upper through hole is formed between adjacent upper isolation seats, a sealing plate is also installed at the top of the circulation treatment tank, a second three-phase separator is installed at the top of the sealing plate, a plurality of focusing buckets are arranged through the sealing plate, the focusing buckets are correspondingly arranged directly above the upper through hole, the upper isolation seat is correspondingly arranged directly above the lower through hole, the top of the focusing bucket is conductively connected to the second three-phase separator, a drain port is arranged at the top of the second three-phase separator, second exhaust ports are connected to both sides of the second three-phase separator, a circulation pipe is connected to the end of the drain port, and the end of the circulation pipe is inserted into the circulation treatment tank.

[0012] In one embodiment of the present invention, the first telescopic sleeve and the second telescopic sleeve are arranged alternately, the projections of each group of the first telescopic sleeve and the second telescopic sleeve in the direction of the bottom surface of the pretreatment tank along the vertical direction do not overlap, the projections of each of the dosing nozzles in the direction of the bottom surface of the pretreatment tank along the vertical direction do not overlap, and the inner walls of the first dosing sleeve and the second dosing sleeve embedded in the pretreatment tank are set to be arc-shaped.

[0013] As described above, the garbage leachate crystallization treatment device of the present invention has the following beneficial effects: The present invention provides a pretreatment mechanism and a circulation treatment mechanism, utilizes the pretreatment mechanism to perform anaerobic digestion pretreatment on the permeate, reduces the content of organic pollutants therein by biological decomposition, thereby effectively reducing the situation of blockage caused by black crystals, and in the process of pretreatment, detects the parameters of the permeate at different positions inside the pretreatment tank by the dosing mechanism, so as to adjust the position and flow rate of the anaerobic modifier sprayed by the dosing mechanism inside the pretreatment tank according to the detection result, reduces the dosage while ensuring the effect of the anaerobic modifier, saves costs, and cooperates with the circulation treatment mechanism to perform another anaerobic digestion treatment on the permeate after pretreatment, further eliminates the organic pollutants therein, fully prevents the situation of crystallization and blockage of equipment, and improves the treatment efficiency of garbage permeate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is an overall schematic diagram of the garbage leachate crystallization treatment device of the present invention.

[0015] Figure 2 Shown is a top view of a pretreatment tank in the garbage leachate crystallization treatment device of the present invention.

[0016] Figure 3 Shown is a schematic structural diagram of a flow regulating mechanism in the garbage leachate crystallization treatment device of the present invention.

[0017] Figure 4 Shown is a schematic diagram of the internal structure of the drainage column in the garbage leachate crystallization treatment device of the present invention.

[0018] Figure 5 Shown is a schematic diagram of the connection relationship of the controller in the garbage leachate crystallization treatment device of the present invention. DETAILED DESCRIPTION

[0019] The following describes the embodiments of the present invention through specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0021] The garbage leachate crystallization treatment device of the present invention is provided with a pretreatment mechanism and a circulation treatment mechanism, and uses the pretreatment mechanism to perform anaerobic digestion pretreatment on the leachate, reduces the content of organic pollutants therein by biological decomposition, thereby effectively reducing the blockage caused by the occurrence of black crystals, and in the process of pretreatment, the parameters of the leachate at different positions inside the pretreatment tank are detected by the dosing mechanism, so as to adjust the position and flow rate of the anaerobic modifier sprayed by the dosing mechanism inside the pretreatment tank according to the detection result, while ensuring the effect of the anaerobic modifier, reducing the dosage and saving costs, and cooperating with the circulation treatment mechanism to perform another anaerobic digestion treatment on the leachate after pretreatment, further eliminating the organic pollutants therein, fully preventing the occurrence of crystallization, and improving the treatment efficiency of the garbage leachate.

[0022] refer to Figures 1 to 5 The present invention provides a garbage permeate crystallization treatment device, comprising a filter 1, a pretreatment mechanism 2 and a circulation treatment mechanism 3, wherein the filter 1 is connected to a conducting pipe 5 through an output pump 4, and the conducting pipe 5 is connected to the pretreatment mechanism 2 to input the permeate in the filter 1 into the pretreatment mechanism 2, and the pretreatment mechanism 2 is used to perform anaerobic pretreatment on the permeate, and the circulation treatment mechanism 3 is connected to the output end of the pretreatment mechanism 2, and the circulation treatment mechanism 3 is used to perform cyclic anaerobic treatment on the permeate after pretreatment, and the pretreatment mechanism 2 and the circulation treatment mechanism 3 are also connected to the outside with a dosing mechanism 6, and the dosing mechanism 6 is used to add an anaerobic modifier into the pretreatment mechanism 2 and the circulation treatment mechanism 3; Among them, the pretreatment mechanism 2 includes a pretreatment tank 21, a pretreatment reactor 22 is installed inside the pretreatment tank 21, the top of the pretreatment reactor 22 is connected to the circulation treatment mechanism 3 through a drain 23 to transport the permeate after pretreatment to the inside of the circulation treatment mechanism 3, the dosing mechanism 6 includes a first dosing sleeve 61 installed at the top of the side of the pretreatment tank 21 and a second dosing sleeve 62 at the bottom of the side, a plurality of groups of first telescopic sleeves 63 connected to the first dosing sleeve 61 are evenly installed at the top of the inner wall of the pretreatment tank 21, a plurality of groups of second telescopic sleeves 64 connected to the second dosing sleeve 62 are evenly installed at the bottom of the inner wall of the pretreatment tank 21, and each group of the first telescopic sleeves 63 and the second telescopic sleeves 64 are connected to the end of the dosing nozzle 65, and the first telescopic sleeve 63 and the second telescopic sleeve 64 are both arranged below the pretreatment reactor 22.

[0023] In the process of garbage disposal, the permeate generated by the garbage needs to be filtered and purified. In this embodiment, after the initial collection, the garbage permeate is discharged into the filter 1 for filtration to filter out the solid particle impurities therein, and then it is pumped out through the output pump 4 and pumped into the pretreatment mechanism 2 through the conducting pipe 5. The filtered permeate is anaerobic pretreated by the pretreatment mechanism 2 to reduce the precipitation of black crystalline substances, and then the pretreated permeate is output to the circulation treatment mechanism 3 for secondary anaerobic treatment to fully reduce the organic pollutants in the permeate, and avoid the occurrence of black crystals in the subsequent treatment process to block or reduce the system load.

[0024] Furthermore, during the pretreatment of the permeate by the pretreatment mechanism 2, an anaerobic modifier is added into the pretreatment mechanism 2 through the dosing mechanism 6 to improve the breeding environment of the anaerobic biochemical bacteria in the pretreatment mechanism 2, accelerate the efficiency of the anaerobic reaction to remove organic pollutants, and further reduce the generation of crystals.

[0025] In some embodiments, a fixing seat 66 is installed at the outer end of the dosing nozzle 65, and one end of the fixing seat 66 is connected to an electric push rod 67. The end of the electric push rod 67 is fixedly connected to the inner wall of the pretreatment tank 21 through a connecting frame 68. The multiple electric push rods 67 are controlled by a controller 9 to achieve synchronous movement to adjust the height of the dosing nozzle 65.

[0026] In this embodiment, during the process of the dosing mechanism 6 adding medicine to the inside of the pretreatment tank 21, the first telescopic sleeve 63 and the second telescopic sleeve 64 are both pushed by the electric push rod 67 to achieve length adjustment, thereby adjusting the positions of the dosing nozzles 65 at the ends of the first telescopic sleeve 63 and the second telescopic sleeve 64 respectively, so that the dosing nozzles 65 can spray the anaerobic modifier at different positions inside the pretreatment tank 21, so as to improve the nutrient ratio of the anaerobic influent inside the pretreatment tank 21, promote the healthy and high-quality reproduction of the anaerobic bacteria, and accelerate the anaerobic reaction of the permeate to fully remove organic pollutants.

[0027] In some other embodiments, a medicine loading tank 69 arranged outside the pretreatment tank 21 is installed between the first medicine loading sleeve 61 and the second medicine loading sleeve 62. One end of the medicine loading tank 69 is conductively connected to the first medicine loading sleeve 61 through a first delivery pipe 691, and the other end is conductively connected to the second medicine loading sleeve 62 through a second delivery pipe 692. The interior of the fixing seat 66 is a hollow structure and is provided with a flow regulating mechanism 7. The flow regulating mechanism 7 is used to adjust the output rate of the anaerobic modifier sprayed from the medicine loading nozzle 65.

[0028] Since a drug loading tank 69 is installed on the outer wall of the pretreatment tank 21, the drug loading tank 69 is used to load the anaerobic modifier. The anaerobic modifier is respectively input into the first delivery pipe 691 and the second delivery pipe 692 through a power pump (not shown in the figure) inside the drug loading tank 69, and is respectively transported to the first drug adding sleeve 61 and the second drug adding sleeve 62, so as to facilitate the input of the anaerobic modifier into the first telescopic sleeve 63 and the second telescopic sleeve 64, and the anaerobic modifier is uniformly sprayed in various corners inside the pretreatment tank 21 through the drug adding nozzle 65 at the end, so that the anaerobic modifier is uniformly dispersed inside the pretreatment tank 21 after spraying, thereby optimizing and improving the nutrient ratio of anaerobic influent, promoting the healthy and high-quality reproduction of anaerobic bacteria, improving the self-flocculation performance of activated sludge, promoting its granulation and absorption and solidification of slightly soluble metal ions, enhancing the ability to resist the impact of leachate fluctuations, and the biochemical degradation ability of insoluble macromolecules, reducing the load of subsequent sewage treatment and reducing the generation of black crystals.

[0029] Furthermore, when the dosing nozzle 65 sprays the anaerobic modifier, the spraying rate of the dosing nozzle 65 is adjusted by the flow regulating mechanism 7 installed inside the fixing seat 66, so that the spraying rate of the dosing nozzle 65 can be dynamically adjusted according to different parameters inside the pretreatment tank 21, thereby reducing the amount of anaerobic modifier while ensuring the anaerobic reaction treatment effect.

[0030] In some other embodiments, the flow regulating mechanism 7 includes a collecting box 701 arranged inside the fixing seat 66, one side of the collecting box 701 is conductively connected to the dosing nozzle 65, the top of the collecting box 701 is connected to a drainage column 702, the drainage column 702 is conductively connected to the first delivery pipe 691 and the second delivery pipe 692 at the corresponding position, the first electric lead screw 703 and the second electric lead screw 704 are connected to the two sides of the fixing seat 66, a blocking plate 705 is installed inside the drainage column 702, and a valve is arranged inside the blocking plate 705. The first and second electric lead screws 703 and 704 are connected to the movable grooves 707 through the metal pillars 709 at one end and the second valve plates 710 and 711 are connected to the movable grooves 707 through the metal pillars 709 at one end and the first and second valve plates 710 and 711 are connected to the movable grooves 707 respectively. When the first and second valve plates 710 and 711 are fitted together, the movable grooves 707 are completely blocked. The inner wall of the valve mouth 706 is provided with sliding grooves 708 fitted with the side walls of the first and second valve plates 710 and 711.

[0031] In this embodiment, when the flow rate needs to be adjusted, the first electric lead screw 703 and the second electric lead screw 704 are driven to rotate, thereby driving the first valve plate 710 and the second valve plate 711 to move back and forth along the movable groove 707 and the slide groove 708 through the metal column 709, thereby adjusting the position of the first valve plate 710 and the second valve plate 711 at the valve port 706 to adjust the opening size of the valve port 706, so as to adjust the flow rate and flow velocity of the anaerobic modifier entering the dosing nozzle 65.

[0032] Among them, when the first electric lead screw 703 and the second electric lead screw 704 move outward at the same time, the valve opening 706 quickly becomes larger, and the flow rate of the anaerobic modifier entering the dosing nozzle 65 increases rapidly; when the first electric lead screw 703 and the second electric lead screw 704 move inward toward each other at the same time, the valve opening 706 quickly becomes smaller, and the flow rate of the anaerobic modifier entering the dosing nozzle 65 decreases rapidly; when the first electric lead screw 703 and the second electric lead screw 704 move outward or inward at the same time, the change speed of the valve opening 706 is the difference between the two, thereby controlling the change speed of the valve opening 706 to meet different adjustment requirements.

[0033] Furthermore, a plurality of protrusions 712 are provided on one end of the first valve plate 710 facing the second valve plate 711, a plurality of grooves 713 corresponding one-to-one to the protrusions 712 and matching in size are provided on one end of the second valve plate 711 facing the first valve plate 710, and sealing strips 714 are provided on the inner walls of the grooves 713, and the movement amplitude of the first electric screw 703 each time it rotates is less than two-thirds of the movement amplitude of the second electric screw 704 each time it rotates.

[0034] Specifically, by providing mutually matching protrusions 712 and grooves 713, the contact area between the first valve plate 710 and the second valve plate 711 is further increased, and the adjustment range of the valve port 706 is increased, so as to meet different flow rate adjustment requirements.

[0035] And because the movement amplitude of the first electric lead screw 703 each time it rotates is less than two-thirds of the movement amplitude of the second electric lead screw 704 each time it rotates, when the first electric lead screw 703 and the second electric lead screw 704 rotate at the same unit time, the movement amplitude of the first valve plate 710 is two-thirds of the movement amplitude of the second valve plate 711. Under the differential adjustment method, for example, the first valve plate 710 moves inward and the second valve plate 711 moves outward, the movement amplitude of the second valve plate 711 in the valve port 706 can be adjusted by one-third in unit time, thereby achieving refined control of the valve port 706 and facilitating accurate adjustment of the flow rate of the dosing nozzle 65.

[0036] In some further embodiments, a detection strip 8 is also installed inside the pretreatment tank 21, and multiple sensor groups are installed on the upper and lower surfaces of the detection strip 8, and the sensor groups include a COD sensor 81, a pH sensor 82 and a position sensor 83. The COD sensor 81 is used to detect the COD concentration inside the pretreatment tank 21, the pH sensor 82 is used to detect the pH value inside the pretreatment tank 21, and the position sensor 83 is used to detect the position information corresponding to the detection strip 8 at different positions. The controller 9 is used to receive the detection results of the sensor group, and in combination with the corresponding position information, adjust the length of the electric push rod 67 to change the position of the dosing nozzle 65, and adjust the first electric screw 703 and the second electric screw 704 to change the opening size of the valve port 706.

[0037] In order to further improve the adjustment process of the spraying position and flow rate of the dosing nozzle 65, the detection strip 8 installed inside the pretreatment tank 21 is used to detect the COD concentration, pH value and position information inside the pretreatment tank 21 through the COD sensor 81, pH sensor 82 and position sensor 83 on its surface, so that the COD concentration and pH value at different positions inside the pretreatment tank 21 can be detected by the detection strip 8. Since the pH value of the leachate is normally in the range of 5.5-6.5, and the COD value is mostly in the range of 40000-65000 mg / L, when the pH value rises and is greater than 7.0 or the COD value is lower than 30000 mg / L, anaerobic reaction is likely to occur, and SS will be generated, making it very easy for crystallization and fouling to occur inside the pretreatment tank 21, making it difficult to inlet water and requiring frequent maintenance; excessive suspended matter is generated and accumulated, and settles to the bottom of the pool, reducing the effective storage capacity of the regulating pool, and a temporary pool cleaning event occurs; excessive suspended matter enters the anaerobic tank, which also increases the probability of pipe network blockage. At this time, the controller 9 can control the electric push rod 67 to move to the corresponding position according to the position detected by the position sensor 83, so as to move the dosing nozzle 65 to the position detected by the position sensor 83, so that the dosing nozzle 65 can quickly spray the anaerobic modifier at this position, accelerate the reaction of the anaerobic biochemical flora to decompose the organic pollutants, and reduce the organic pollutants therein.

[0038] Furthermore, while controlling the electric push rod 67, the controller 9 can also control the first electric lead screw 703 and the second electric lead screw 704, thereby adjusting the opening size of the valve port 706, so that the dosing nozzle 65 can spray the anaerobic modifier at a faster flow rate at a position where COD and pH do not meet the standards, thereby accelerating the anaerobic reaction of the anaerobic biochemical flora, accelerating the decomposition of organic pollutants in the permeate, and reducing the subsequent occurrence of crystallization.

[0039] Furthermore, the first telescopic sleeve 63 and the second telescopic sleeve 64 are arranged alternately, and the projections of each group of the first telescopic sleeve 63 and the second telescopic sleeve 64 in the vertical direction on the bottom surface direction of the pretreatment tank 21 do not overlap, and the projections of each of the dosing nozzles 65 in the vertical direction on the bottom surface direction of the pretreatment tank 21 do not overlap, so that the active areas of the first telescopic sleeve 63 and the second telescopic sleeve 64 do not overlap, ensuring that the dosing nozzle 65 can be controlled to spray the anaerobic modifier at different positions inside the pretreatment tank 21, and the inner walls of the first dosing sleeve 61 and the second dosing sleeve 62 embedded in the pretreatment tank 21 are set to be arc-shaped, which can prevent the problem of solid suspended matter remaining on the inner walls of the first dosing sleeve 61 and the second dosing sleeve 62.

[0040] In some other embodiments, the pretreatment reactor 22 includes a first sludge layer 221 arranged at the bottom end of the pretreatment tank 21 and a first three-phase separator 222 arranged at the top end of the pretreatment tank 21, the first dosing sleeve 61 and the second dosing sleeve 62 are both located between the first sludge layer 221 and the first three-phase separator 222, the top of the first three-phase separator 222 is provided with a discharge port 223 communicated with the drain 23, and the side of the first three-phase separator 222 is provided with a first exhaust port 224, the circulation treatment mechanism 3 includes a circulation treatment tank 31 connected to the drain 23, the bottom end of the circulation treatment tank 31 is provided with a second sludge layer 32, the top of the circulation treatment tank 31 is provided with a reactor 33, and the reactor 33 includes a plurality of lower partitions arranged in parallel installed inside the circulation treatment tank 31 A separation seat 331 and a plurality of upper isolation seats 332 are arranged in parallel, a lower through hole 333 is formed between adjacent lower isolation seats 331, and an upper through hole 334 is formed between adjacent upper isolation seats 332. A sealing plate 34 is also installed on the top of the circulation treatment tank 31, and a second three-phase separator 35 is installed on the top of the sealing plate 34. A plurality of focusing buckets 335 are arranged through the inside of the sealing plate 34, and the focusing buckets 335 are all arranged correspondingly above the upper through hole 334, and the upper isolation seat 332 is correspondingly arranged correspondingly above the lower through hole 333. The top of the focusing bucket 335 is conductively connected with the second three-phase separator 35, and a drain port 36 is arranged on the top of the second three-phase separator 35. Second exhaust ports 37 are connected on both sides of the second three-phase separator 35. The end of the drain port 36 is connected to a circulation pipe 38, and the end of the circulation pipe 38 is inserted into the circulation treatment tank 31.

[0041] In this embodiment, the pretreatment mechanism 2 and the circulation treatment mechanism 3 are used to realize the cyclic anaerobic biochemical treatment of the permeate, which can purify the organic pollutants in the permeate more thoroughly and fully reduce the blockage caused by the generation of crystallized substances.

[0042] Specifically, after the permeate after preliminary filtration by the filter 1 is input into the pretreatment tank 21 by the conducting pipe 5, since the first sludge layer 221 in the pretreatment tank 21 contains a large amount of anaerobic biochemical bacteria, an anaerobic modifier is added through the dosing mechanism 6, thereby accelerating the anaerobic reaction of the anaerobic biochemical bacteria in the pretreatment tank 21 and accelerating the decomposition of organic pollutants in the permeate. After the decomposed permeate rises, it enters the first three-phase separator 222 for three-phase separation, and the separated sludge falls back to the sludge bed of the first sludge layer 221, and the separated permeate enters the drain 23 through the drain port 223, and the generated gas is discharged through the first exhaust port 224, thereby achieving pretreatment of the permeate. The permeate after pretreatment discharged by the drain 23 enters the circulation treatment tank 31. After the permeate enters the circulation treatment tank 31, the organic pollutants in the permeate are further anaerobically decomposed under the action of the second sludge layer 32. After the decomposition, the sludge suspension is formed and then passed through the reactor 33 for three-phase separation to achieve the three-phase separation of water, gas and fixed suspended matter. Since the three-phase separation adopts the content of the existing technology, this scheme does not involve the improvement of the three-phase separation itself, which will not be repeated here.

[0043] Furthermore, in order to reduce excessive entry of sludge suspended matter into the second three-phase separator 35, a plurality of parallel lower isolation seats 331 and a plurality of parallel upper isolation seats 332 are provided, and lower through holes 333 are formed between adjacent lower isolation seats 331, and upper through holes 334 are formed between adjacent upper isolation seats 332. A sealing plate 34 is also installed on the top of the circulation treatment tank 31, and a plurality of focusing buckets 335 are provided through the inside of the sealing plate 34. The focusing buckets 335 are correspondingly arranged directly above the upper through holes 334, and the top of the focusing bucket 335 is conductively connected to the second three-phase separator 35, so that the sludge suspended matter and gas pass through the lower isolation seat 331 and the upper isolation seat 332 in turn, and then enter the second three-phase separator 35 above the sealing plate 34 through the focusing bucket 335, and the three-phase separation is achieved by the second three-phase separator 35. Since the concentration buckets 335 are all arranged correspondingly above the upper perforations 334, and the upper isolation seats 332 are arranged correspondingly above the lower perforations 333, the suspension after the anaerobic reaction will sequentially pass through the lower perforations 333 between the lower isolation seats 331 and enter the upper perforations 334 between the upper isolation seats 332, thereby increasing the contact time between the suspension and the lower isolation seats 331 and the upper isolation seats 332, accelerating the shedding of solid particles in the suspension and re-precipitation in the second sludge layer 32, thereby reducing the solid matter that needs to be separated by the subsequent second three-phase separator 35. If the liquid does not meet the requirements after separation by the second three-phase separator 35, the treated liquid can be re-discharged into the circulation treatment tank 31 through the circulation pipe 38 connected to the end of the drain port 36 for circulation treatment until the pollutants in the liquid separated by the second three-phase separator 35 are reduced to meet the requirements, and then directly discharged through the drain port 36 for subsequent operations.

[0044] It should be noted that the spontaneous reproduction of anaerobic biochemical bacteria requires the consumption of various nutrient sources and chemical ions. The anaerobic modifier provides a variety of nutrients and nickel-cobalt salts, polysaccharide-like catalytic enzymes, which can optimize and improve the nutrient ratio of anaerobic influent, promote the healthy and high-quality reproduction of anaerobic bacteria, improve the self-flocculation performance of activated sludge, promote its granulation and absorption and solidification of slightly soluble metal ions, enhance its resistance to leachate fluctuation shock and the biochemical degradation capacity of insoluble macromolecules, so that the COD degradation capacity is stabilized at more than 85%. Incremental use can enable the anaerobic system to operate at super-design treatment load.

[0045] Since the anaerobic modifier contains chelating groups, based on the chelation and dispersion theory, the chelating groups of the anaerobic modifier molecules preferentially react with the crystalline ions to form monocyclic, bicyclic and polycyclic chelate suspended solids, which are removed from the system together with the sludge after sedimentation; the chelation effect greatly reduces the supersaturation of the crystalline ions in the leachate, and through the double layer charge effect, disperses the contact of anions (such as CO32-, SO42-, PO43-, SiO32-, etc.), which greatly reduces the probability of forming blocky and dense crystals.

[0046] Moreover, anaerobic modifiers contain a large amount of ionic substances. Based on the interference crystallization theory, the modifier molecules entering the leachate network will be preferentially adsorbed on the network wall with the charge exactly opposite to that carried by the pipe network wall, interfering with the normal growth of crystal nuclei on the network wall, so that the crystal nuclei (grains) can no longer grow in an orderly manner according to the lattice on the pipe wall, and can also cause the crystal structure of the crystal to be distorted and replaced, and can no longer grow into a dense scale layer.

[0047] In some other embodiments, the lower isolation seat 331 located on both sides is configured as an acute triangle with one side in contact with the inner wall of the circulation treatment tank 31, and the upper isolation seat 332 and the lower isolation seat 331 located between the two sides are configured as diagonally arranged diamond structures, thereby reducing the accumulation of suspended objects on the surfaces of the lower isolation seat 331 and the upper isolation seat 332.

[0048] In summary, the garbage leachate crystallization treatment device of the present invention, by setting a pretreatment mechanism and a circulation treatment mechanism, uses the pretreatment mechanism to perform anaerobic digestion pretreatment on the leachate, reduces the content of organic pollutants therein by biological decomposition, thereby effectively reducing the situation of blockage caused by black crystals, and in the process of pretreatment, the parameters of the leachate at different positions inside the pretreatment tank are detected by the dosing mechanism, so as to adjust the position and flow rate of the anaerobic modifier sprayed by the dosing mechanism inside the pretreatment tank according to the detection result, while ensuring the effect of the anaerobic modifier, reducing the dosage and saving costs, and cooperating with the circulation treatment mechanism to perform another anaerobic digestion treatment on the leachate after pretreatment, further eliminating the organic pollutants therein, fully preventing the situation of crystallization and clogging of the equipment, and improving the treatment efficiency of the garbage leachate; therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A garbage leachate crystallization treatment device, characterized in that: The invention comprises a filter (1), a pretreatment mechanism (2) and a circulation treatment mechanism (3), wherein the filter (1) is connected to a conducting pipe (5) via an output pump (4), and the conducting pipe (5) is connected to the inside of the pretreatment mechanism (2) so as to input the permeate in the filter (1) into the inside of the pretreatment mechanism (2), and the pretreatment mechanism (2) is used to perform anaerobic pretreatment on the permeate, and the circulation treatment mechanism (3) is connected to the output end of the pretreatment mechanism (2), and the circulation treatment mechanism (3) is used to perform cyclic anaerobic treatment on the permeate after pretreatment, and the pretreatment mechanism (2) and the circulation treatment mechanism (3) are also connected to a dosing mechanism (6) outside, and the dosing mechanism (6) is used to add an anaerobic modifier into the pretreatment mechanism (2) and the circulation treatment mechanism (3); wherein the pretreatment mechanism (2) comprises a pretreatment tank (21), and the pretreatment tank (21) is provided with a A pretreatment reactor (22) is provided, the top of the pretreatment reactor (22) being conductively connected to the circulation treatment mechanism (3) through a drain (23) so as to transport the permeate after pretreatment to the inside of the circulation treatment mechanism (3); the dosing mechanism (6) comprising a first dosing sleeve (61) mounted at the top of the side surface of the pretreatment tank (21) and a second dosing sleeve (62) mounted at the bottom of the side surface; a plurality of groups of first telescopic sleeves (63) conductively connected to the first dosing sleeve (61) are evenly mounted at the top of the inner wall of the pretreatment tank (21); a plurality of groups of second telescopic sleeves (64) conductively connected to the second dosing sleeve (62) are evenly mounted at the bottom of the inner wall of the pretreatment tank (21); and a dosing nozzle (65) is conductively connected to each end of each group of the first telescopic sleeves (63) and the second telescopic sleeves (64); and the first telescopic sleeves (63) and the second telescopic sleeves (64) are both arranged below the pretreatment reactor (22).

2. The garbage leachate crystallization treatment device according to claim 1, characterized in that: A fixing seat (66) is mounted on the outer end of each of the dosing nozzles (65); one end of the fixing seat (66) is connected to an electric push rod (67); the end of the electric push rod (67) is fixedly connected to the inner wall of the pretreatment tank (21) via a connecting frame (68); a plurality of the electric push rods (67) are controlled by a controller (9) to achieve synchronous movement, so as to adjust the height of the dosing nozzle (65).

3. The garbage leachate crystallization treatment device according to claim 2, characterized in that: A drug loading tank (69) arranged outside the pretreatment tank (21) is installed between the first drug loading sleeve (61) and the second drug loading sleeve (62); one end of the drug loading tank (69) is conductively connected to the first drug loading sleeve (61) via a first delivery pipe (691), and the other end is conductively connected to the second drug loading sleeve (62) via a second delivery pipe (692); the interior of the fixing seat (66) is a hollow structure and is provided with a flow regulating mechanism (7); the flow regulating mechanism (7) is used to adjust the output rate of the anaerobic modifier sprayed from the drug loading nozzle (65).

4. The garbage leachate crystallization treatment device according to claim 3 is characterized in that: The flow regulating mechanism (7) comprises a collecting box (701) arranged inside the fixing seat (66), one side of the collecting box (701) is conductively connected to the dosing nozzle (65), a top of the collecting box (701) is connected to a drainage column (702), the drainage column (702) is conductively connected to the first delivery pipe (691) and the second delivery pipe (692) at corresponding positions, a first electric lead screw (703) and a second electric lead screw (704) are connected to two sides inside the fixing seat (66), a blocking plate (705) is installed inside the drainage column (702), and a valve port (706) is arranged inside the blocking plate (705). ), and movable grooves (707) communicating with the valve port (706) are provided on both sides of the outside of the drainage column (702), and the first electric lead screw (703) and the second electric lead screw (704) are connected to a first valve plate (710) and a second valve plate (711) inserted into the movable groove (707) via metal columns (709) at one end near the inside, respectively, and the movable groove (707) is completely blocked when the first valve plate (710) and the second valve plate (711) are fitted together, and the inner wall of the valve port (706) is provided with a sliding groove (708) fitted with the side walls of the first valve plate (710) and the second valve plate (711).

5. The garbage leachate crystallization treatment device according to claim 4, characterized in that: A plurality of protrusions (712) are provided at one end of the first valve plate (710) facing the second valve plate (711), a plurality of grooves (713) corresponding one-to-one to the protrusions (712) and matching in size are provided at one end of the second valve plate (711) facing the first valve plate (710), and sealing strips (714) are provided on the inner walls of the grooves (713), and the movement amplitude of the first electric lead screw (703) during each rotation is less than two thirds of the movement amplitude of the second electric lead screw (704) during each rotation.

6. The garbage leachate crystallization treatment device according to claim 4, characterized in that: A detection strip (8) is also installed inside the pretreatment tank (21). A plurality of sensor groups are evenly installed on the upper and lower surfaces of the detection strip (8). The sensor groups include a COD sensor (81), a pH sensor (82) and a position sensor (83). The COD sensor (81) is used to detect the COD concentration inside the pretreatment tank (21). The pH sensor (82) is used to detect the pH value inside the pretreatment tank (21). The position sensor (83) is used to detect position information corresponding to different positions of the detection strip (8). The controller (9) is used to receive the detection results of the sensor group and, in combination with the corresponding position information, adjust the length of the electric push rod (67) to change the position of the dosing nozzle (65), and adjust the first electric lead screw (703) and the second electric lead screw (704) to change the opening size of the valve port (706).

7. The garbage leachate crystallization treatment device according to claim 1, characterized in that: The pretreatment reactor (22) comprises a first sludge layer (221) arranged at the bottom end of the pretreatment tank (21) and a first three-phase separator (222) arranged at the top end of the pretreatment tank (21); the first dosing sleeve (61) and the second dosing sleeve (62) are both located between the first sludge layer (221) and the first three-phase separator (222); a drain port (223) communicating with the drain (23) is arranged at the top end of the first three-phase separator (222); and a first exhaust port (224) is arranged at the side of the first three-phase separator (222).

8. The garbage leachate crystallization treatment device according to claim 1, characterized in that: The circulation treatment mechanism (3) comprises a circulation treatment tank (31) which is electrically connected to the drain (23); a second sludge layer (32) is arranged at the bottom of the circulation treatment tank (31); a reactor (33) is arranged at the top of the circulation treatment tank (31); the reactor (33) comprises a plurality of lower isolation seats (331) and a plurality of upper isolation seats (332) which are arranged in parallel and which are installed in the circulation treatment tank (31); lower through holes (333) are formed between adjacent lower isolation seats (331); upper through holes (334) are formed between adjacent upper isolation seats (332); a sealing plate (34) is also installed at the top of the circulation treatment tank (31); the sealing plate ( A second three-phase separator (34) is installed at the top, a plurality of focusing buckets (335) are arranged through the sealing plate (34), the focusing buckets (335) are arranged correspondingly just above the upper through hole (334), the upper isolation seat (332) is arranged correspondingly just above the lower through hole (333), the top of the focusing bucket (335) is conductively connected to the second three-phase separator (35), a drain outlet (36) is arranged at the top of the second three-phase separator (35), the second three-phase separator (35) is connected to second exhaust outlets (37) on both sides, the end of the drain outlet (36) is connected to a circulation pipe (38), and the end of the circulation pipe (38) is inserted into the circulation treatment tank (31).

9. The garbage leachate crystallization treatment device according to claim 1, characterized in that: The first telescopic sleeves (63) and the second telescopic sleeves (64) are arranged alternately, the projections of each group of the first telescopic sleeves (63) and the second telescopic sleeves (64) in the vertical direction on the bottom surface of the pretreatment tank (21) do not overlap, the projections of each of the dosing nozzles (65) in the vertical direction on the bottom surface of the pretreatment tank (21) do not overlap, and the inner walls of the first dosing sleeves (61) and the second dosing sleeves (62) embedded in the pretreatment tank (21) are arranged to be arc-shaped.

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