CN114085013B - A multistage preprocessing device for kitchen garbage high concentration waste water - Google Patents
A multistage preprocessing device for kitchen garbage high concentration waste water Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/30—Aerobic and anaerobic processes
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Abstract
The application relates to the technical field of kitchen waste and wastewater treatment, in particular to a multistage pretreatment device for high-concentration wastewater of kitchen waste, which comprises a pretreatment tank, a biochemical tank and an MBR (membrane bioreactor) filter tank which are sequentially connected along the sewage treatment direction, wherein the biochemical tank is connected with a deodorization mechanism for removing odor; the rigid coupling has first baffle in the preliminary treatment pond, and first baffle separates the inner space in preliminary treatment pond for collecting pit and primary filter, is provided with stone mechanism in the primary filter, and stone mechanism can fill the hydrophobic oleophylic filtering material layer in waste water surface shop, has seted up the oil drain port on the first baffle, and oil drain port department is provided with the gate that is used for the switch. The application has the advantage that the effect of kitchen waste wastewater treatment is greatly improved.
Description
Technical Field
The application relates to the technical field of kitchen waste wastewater treatment, in particular to a multistage pretreatment device for kitchen waste high-concentration wastewater.
Background
With the improvement of urbanization level, the acceleration of life rhythm of people, the increase of mobile population and other factors, the food production industry is rapidly developed, so that a large amount of kitchen waste is generated, and a certain amount of kitchen waste wastewater is inevitably generated in the process of collecting, transporting and treating the kitchen waste.
At present, kitchen waste wastewater is simply filtered and not thoroughly treated, even is not treated in regions with weak monitoring strength individually, and is directly discharged into a water body.
Disclosure of Invention
In order to improve present kitchen garbage waste water treatment's current situation, this application provides a multistage preprocessing device for kitchen garbage high concentration waste water.
The application provides a multistage preprocessing device for kitchen garbage high concentration waste water adopts following technical scheme:
a multistage pretreatment device for high-concentration wastewater of kitchen waste comprises a pretreatment tank, a biochemical tank and an MBR (membrane bioreactor) filter tank which are sequentially connected along the sewage treatment direction, wherein the biochemical tank is connected with a deodorization mechanism for removing odor;
the rigid coupling has first baffle in the preliminary treatment pond, and first baffle separates the inner space in preliminary treatment pond for collecting pit and primary filter, is provided with stone mechanism in the primary filter, and stone mechanism can fill the hydrophobic oleophylic filtering material layer in waste water surface shop, has seted up the oil drain port on the first baffle, and oil drain port department is provided with the gate that is used for the switch.
By adopting the technical scheme, the pretreatment tank can be used for carrying out oil-water separation on the kitchen waste wastewater, so that the possibility of blockage in the subsequent treatment process is reduced; the biochemical pool can decompose organic matters in the kitchen waste wastewater, and simultaneously can remove odor through a deodorization mechanism in the decomposition process; MBR filtering ponds can further filter the kitchen garbage waste water after the biochemical treatment, adopts the mode of multilevel processing, handles more thoroughly, has improved kitchen garbage waste water treatment's effect greatly.
And a filter screen is arranged at the position above the spreading device in the primary filter tank.
Through adopting above-mentioned technical scheme, the setting of filter screen for impurity to in the waste water is intercepted, realizes just straining.
Preferably, the spreading mechanism comprises a lead screw, a guide rod, a spreading box and a motor, wherein the lead screw is rotatably connected to two opposite inner side walls of the primary filter, the spreading box is fixedly connected to the two opposite inner side walls of the primary filter and is parallel to the lead screw, the spreading box is in threaded connection with the lead screw and is in sliding fit with the guide rod, the motor is installed on the outer side wall of the primary filter and is connected with one end of the lead screw, a hydrophobic oleophylic filter material is filled in the spreading box, and a discharge hole is formed in the bottom of the spreading box.
Through adopting above-mentioned technical scheme, the in-process of stone box reciprocating motion in the primary filter, the filter material discharges through the discharge opening, and then forms the hydrophobic oleophylic filter bed on the surface of waste water for the grease in the kitchen garbage waste water constantly assembles and forms the grease layer towards the hydrophobic oleophylic filter bed.
Preferably, the spreading box is arranged along the length or width direction of the primary filter tank, one side of the spreading box, which is far away from the discharge hole, is hinged with a cover plate, and small vibration motors are respectively installed on the two sides of the spreading box along the length direction of the spreading box.
Through adopting above-mentioned technical scheme, small-size shock dynamo's setting, the filter material of being convenient for is discharged from the discharge opening, realizes even blanking, reduces the possibility that the filter material blockked up the discharge opening simultaneously.
Preferably, the bottom of the material spreading box is provided with a switch assembly for opening or closing the discharge hole; the switch assembly comprises L-shaped supporting plates which are fixedly connected to two ends of the bottom of the spreading box respectively and are arranged oppositely, a baffle which slides on the L-shaped supporting plates and is attached to the bottom of the spreading box, and an electric push rod which is installed on one side, far away from the discharge hole, of the L-shaped supporting plate, a piston rod of the electric push rod is fixedly connected with the end portion of the baffle through an ear plate, and a discharge hole corresponding to the discharge hole is processed in the baffle.
Through adopting above-mentioned technical scheme, the setting of switch module mainly used prevents to spread the magazine and leak the material under non-operating condition.
Preferably, the gate includes the door plant that is located the collecting tank and with first baffle sliding fit to and install the cylinder on first baffle upper edge, and the piston rod of cylinder passes through the angle steel and is connected with the door plant.
Through adopting above-mentioned technical scheme, when the rubbish waste water in kitchen in the primary filter is in the stationary flow state, open the door plant through the cylinder for grease is together followed the filter material and is got into in the collecting tank through the oil drain port, realizes the separation of profit.
Preferably, the top in biochemical pond is closed, and the rigid coupling has the second baffle that separates biochemical pond inner space for anaerobism pond and aerobic tank in the biochemical pond, and the position that the second baffle is close to the top is equipped with first overflow weir, is connected with external communicating pipe between preliminary filter and the anaerobism pond, installs sewage solenoid valve and sewage pump on communicating pipe in proper order.
By adopting the technical scheme, when the liquid level in the primary filter tank is higher than the liquid level in the anaerobic tank, the sewage can flow into the anaerobic tank only by opening the sewage electromagnetic valve; when the liquid level in the primary filter tank is lower than the liquid level in the anaerobic tank, a sewage pump needs to be started at the same time to provide power for sewage conveying.
Preferably, the deodorization mechanism includes external deodorization case, branch pipe, one end and two spinal branch union couplings that communicate with anaerobism pond and aerobic tank respectively, and the other end stretches into the main pipe of deodorization incasement to and install the air exhauster in the main pipe.
Through adopting above-mentioned technical scheme, when opening the air exhauster, the foul smell gets into the deodorization incasement through branch pipe, person in charge in proper order and purifies.
Preferably, the deodorization box comprises an acid removal chamber, a first conveying pipe, an alkali removal chamber, a second conveying pipe, an adsorption chamber and an exhaust pipe, wherein the acid removal chamber is filled with an alkaline solution, the alkali removal chamber is filled with an acidic solution, and the adsorption chamber is filled with activated carbon;
one end of the main pipe, which is far away from the branch pipe, extends into the lower part of the liquid level of the acid removing chamber;
one end of the first conveying pipe is communicated with the acid removing chamber and is positioned above the liquid level, the other end of the first conveying pipe is communicated with the alkali removing chamber and is positioned below the liquid level, one end of the second conveying pipe is communicated with the alkali removing chamber and is positioned above the liquid level, and the other end of the second conveying pipe is communicated with the adsorption chamber and is embedded in the activated carbon; the exhaust pipe is connected with the position of the adsorption chamber above the activated carbon.
By adopting the technical scheme, when the odor passes through the acid removing chamber, acidic substances carried in the odor are neutralized with the alkaline solution, so that the acidic substances are removed; when the odor passes through the alkali removing chamber, the alkaline substances carried in the odor are neutralized with the acidic solution, so that the alkaline substances are removed; finally, the air is discharged into the atmosphere after the adsorption treatment of the active carbon, and the deodorization effect is greatly improved through a multi-stage filtration mode.
Preferably, a third partition plate and a fourth partition plate which divide the inner space of the MBR filter tank into an MBR tank, an equipment room and a clean water tank are fixedly connected in the MBR filter tank, a wall plate is shared between the MBR tank and the aerobic tank, and a second overflow weir is arranged on the wall plate;
install the MBR membrane module in the MBR pond, the upper and lower both ends of MBR membrane module all are connected with integrated water pipe, are provided with the suction pump in the equipment room, and the water inlet of suction pump passes through raceway and two sets of integrated water pipe intercommunication, through going out water piping connection between the delivery port of suction pump and the clean water basin.
By adopting the technical scheme, water entering the MBR tank enters the clear water tank through the integrated water pipe, the water conveying pipe and the water outlet pipe in sequence under the action of the water pump after being filtered by the MBR membrane component, and the discharge standard is ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of a multistage pretreatment apparatus according to an embodiment of the present application;
FIG. 2 is a front perspective view showing an internal structure of the pretreatment tank;
FIG. 3 is a plan view showing the connection between the biochemical tank and the deodorizing mechanism;
FIG. 4 is a sectional view showing a detailed structure of the deodorization mechanism;
fig. 5 is a front perspective view showing the internal structure of the MBR filtration tank.
Description of reference numerals: 1. a pretreatment tank; 11. a first separator; 111. an oil discharge port; 12. a collection tank; 13. a primary filter tank; 14. filtering with a screen; 2. a biochemical pool; 21. an anaerobic tank; 22. an aerobic tank; 23. a second separator; 3. an MBR filter tank; 31. an MBR tank; 32. a device room; 33. a clean water tank; 34. a third partition plate; 35. a fourth separator; 37. an MBR membrane module; 38. an integrated water pipe; 39. a water pump; 391. a water delivery pipe; 392. a water outlet pipe; 4. a material spreading mechanism; 41. a lead screw; 42. a guide bar; 43. laying a material box; 44. a slider; 45. a drive motor; 46. a small-sized vibration motor; 47. an L-shaped pallet; 48. a baffle plate; 49. an electric push rod; 5. a gate; 51. a door panel; 52. a cylinder; 53. angle steel; 6. a communicating pipe; 61. a sewage solenoid valve; 62. a sewage pump; 7. a deodorizing mechanism; 71. a branch pipe; 72. a main pipe; 73. an acid removal chamber; 74. a first delivery pipe; 75. an alkali removal chamber; 76. a second delivery pipe; 77. an adsorption chamber; 78. and (4) exhausting the gas.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a multistage preprocessing device for kitchen garbage high concentration waste water. Referring to fig. 1, the multistage pretreatment apparatus includes a pretreatment tank 1, a biochemical tank 2, and an MBR filtration tank 3, which are sequentially connected in a sewage treatment direction; the pretreatment tank 1 is mainly used for carrying out oil-water separation on the kitchen waste wastewater so as to facilitate subsequent filtration treatment; the biochemical pool 2 is mainly used for hydrolyzing and fermenting organic matters in the kitchen waste wastewater; the MBR filter tank 3 is mainly used for filtering the kitchen waste wastewater after the biochemical treatment so as to meet the discharge standard.
Referring to fig. 2, the top of the pretreatment tank 1 is open, a first partition plate 11 is fixedly connected in the pretreatment tank 1, and the first partition plate 11 divides the inner space of the pretreatment tank 1 into a collection tank 12 and a primary filter tank 13; filter screen 14 and stone mechanism 4 have set gradually from top to bottom in the preliminary filter 13, and wherein filter screen 14 is detachable, conveniently clears up or changes as required, and filter screen 14's setting, mainly used carry out the preliminary filtration to kitchen garbage waste water, filter the great wastes material of size.
The spreading mechanism 4 comprises screw rods 41 which are rotatably connected to two opposite inner side walls of the primary filter 13, and guide rods 42 which are fixedly connected to the two opposite inner side walls of the primary filter 13 and are parallel to the screw rods 41, the screw rods 41 and the guide rods 42 are equal in height, the screw rods 41 are arranged close to the first partition plate 11, one ends of the screw rods 41 penetrate through the side walls of the primary filter 13 to the outside, and the guide rods 42 are arranged close to the biochemical pool 2; the spreading mechanism 4 further comprises a spreading box 43, the spreading box 43 is arranged along the length direction or the width direction of the primary filter tank 13, two ends of the spreading box 43 are respectively and fixedly connected with a sliding block 44, one sliding block 44 is sleeved on the lead screw 41 and is in threaded connection with the lead screw 41, the other sliding block 44 is sleeved on the guide rod 42 and is in sliding connection with the guide rod 42, a driving motor 45 is installed on the outer side wall of the primary filter tank 13, the output end of the driving motor 45 is connected with one end, extending out of the side wall of the primary filter tank 13, of the lead screw 41 to the outside, and when the driving motor 45 is started, the spreading box 43 reciprocates along the guide rod 42 under the action of threaded transmission.
Referring to fig. 2, the discharge opening has been seted up to the inside cavity and the bottom of stone box 43, it has the apron to articulate in one side of the discharge opening is kept away from at stone box 43, stone box 43 intussuseption is filled with granule or massive hydrophobic oleophilic type filter material, the density of filter material is less than water, install small-size shock dynamo 46 respectively in stone box 43 along self length direction's both sides, stone box 43 reciprocating motion's in primary filter 13 in-process, the filter material discharges through the discharge opening under small-size shock dynamo 46's effect, and then form hydrophobic oleophilic filter material layer on the surface of waste water, make the grease in the kitchen garbage waste water constantly assemble towards hydrophobic oleophilic filter material layer and form the grease layer.
An oil discharge port 111 is formed in the first partition plate 11, the height of the oil discharge port 111 is the same as the height of a liquid level after steady flow in the primary filter tank 13, a gate 5 for opening and closing is arranged at the oil discharge port 111, the gate 5 comprises a door plate 51 which is positioned in the collection tank 12 and is in sliding fit with the first partition plate 11, and an air cylinder 52 which is installed on the upper edge of the first partition plate 11, a piston rod of the air cylinder 52 is connected with the door plate 51 through an angle steel 53, when kitchen waste water in the primary filter tank 13 is in a steady flow state, the door plate 51 is opened through the air cylinder 52, so that grease along with a filter material enters the collection tank 12 through the oil discharge port 111, and oil-water separation is realized.
Referring to fig. 2, in order to prevent the spreading box 43 from leaking in the non-working state, a switch assembly for opening or closing the discharge hole is provided at the bottom of the spreading box 43; the switch assembly comprises L-shaped supporting plates 47 which are fixedly connected to two ends of the bottom of the material paving box 43 respectively and are oppositely arranged, a baffle plate 48 which slides on the L-shaped supporting plates 47 and is attached to the bottom of the material paving box 43, and an electric push rod 49 which is installed on one side, far away from the discharge hole, of the L-shaped supporting plate 47, a piston rod of the electric push rod 49 is fixedly connected with the end part of the baffle plate 48 through an ear plate, a discharge hole corresponding to the discharge hole is processed in the baffle plate 48, and the discharge hole are arranged in a staggered mode in a non-working state; in operation, the baffle 48 is driven by the electric push rod 49 to move, so that the discharge hole is aligned with the discharge hole and discharge is carried out.
Referring to fig. 2 and 3, the top of the biochemical pool 2 is closed, a second partition 23 for dividing the internal space of the biochemical pool 2 into an anaerobic pool 21 and an aerobic pool 22 is fixedly connected in the biochemical pool 2, a first overflow weir is arranged at a position of the second partition 23 close to the top, and wastewater after anaerobic treatment can enter the aerobic pool 22 through the first overflow weir. An external communicating pipe 6 is connected between the primary filter tank 13 and the anaerobic tank 21, a sewage electromagnetic valve 61 and a sewage pump 62 are sequentially installed on the communicating pipe 6, and when the liquid level in the primary filter tank 13 is higher than the liquid level in the anaerobic tank 21, the sewage electromagnetic valve 61 is opened to enable the sewage to flow into the anaerobic tank 21; when the liquid level in the primary filter tank 13 is lower than the liquid level in the anaerobic tank 21, the sewage pump 62 needs to be started at the same time to provide power for sewage conveying.
When the wastewater enters the anaerobic tank 21, the anaerobic microorganisms hydrolyze, acidify and methanize the organic matters, so that the removal rate of COD is improved, and the organic matters with high molecular weight and difficult degradation are converted into the organic matters with low molecular weight and easy degradation; when the wastewater enters the aerobic tank 22, aerobic microorganisms carry out biological metabolism in the presence of oxygen, so that organic matters are further degraded.
Referring to fig. 3 and 4, in order to purify the odor generated in the biochemical treatment process, a deodorization mechanism 7 is arranged outside the biochemical tank 2, the deodorization mechanism 7 comprises an external deodorization tank, branch pipes 71 respectively communicated with the anaerobic tank 21 and the aerobic tank 22, a main pipe 72 with one end connected with the two branch pipes 71 and the other end extending into the deodorization tank, and an exhaust fan (not shown in the figure) arranged in the main pipe 72, and when the exhaust fan is started, the odor enters the deodorization tank through the branch pipes 71 and the main pipe 72 in sequence to be purified.
More specifically, the deodorization tank comprises an acid removal chamber 73, a first delivery pipe 74, an alkali removal chamber 75, a second delivery pipe 76, an adsorption chamber 77 and an exhaust pipe 78, wherein the acid removal chamber 73 contains an alkaline solution, the alkaline solution can be caustic soda and sodium hypochlorite solution, the alkali removal chamber 75 contains an acidic solution, the acidic solution can be hydrochloric acid, and the adsorption chamber 77 contains activated carbon; one end of the main pipe 72 far away from the branch pipe 71 extends into the position below the liquid level of the acid removing chamber 73; one end of the first delivery pipe 74 is communicated with the acid removing chamber 73 and is positioned above the liquid level, the other end of the first delivery pipe 74 is communicated with the alkali removing chamber 75 and is positioned below the liquid level, one end of the second delivery pipe 76 is communicated with the alkali removing chamber 75 and is positioned above the liquid level, and the other end of the second delivery pipe 76 is communicated with the adsorption chamber 77 and is embedded in the activated carbon; the exhaust pipe 78 is connected to the adsorption chamber 77 at a position above the activated carbon.
When the odor passes through the acid removing chamber 73, acidic substances carried in the odor are neutralized with the alkaline solution, so that the acidic substances are removed; when the odor passes through the alkali removal chamber 75, the alkaline substances carried in the odor are neutralized with the acidic solution, so that the alkaline substances are removed; finally, the waste gas is discharged into the atmosphere after being adsorbed by active carbon.
Referring to fig. 5, a third partition plate 34 and a fourth partition plate 35 which divide the internal space of the MBR filtration tank 3 into an MBR tank 31, an equipment room 32 and a clean water tank 33 are fixedly connected in the MBR filtration tank 3, a wall plate is shared between the MBR tank 31 and the aerobic tank 22, a second overflow weir is arranged on the wall plate, and wastewater after aerobic treatment can enter the MBR tank 31 through the second overflow weir; an MBR membrane module 37 is installed in the MBR tank 31, the upper end and the lower end of the MBR membrane module 37 are both connected with integrated water pipes 38, a water suction pump 39 is arranged in the equipment room 32, a water inlet of the water suction pump 39 is communicated with the two groups of integrated water pipes 38 through a water pipe 391, a water outlet of the water suction pump 39 is connected with the clean water tank 33 through a water outlet pipe 392, and water entering the MBR tank 31 is filtered by the MBR membrane module 37 and then sequentially enters the clean water tank 33 through the integrated water pipes 38, the water pipe 391 and the water outlet pipe 392 under the action of the water suction pump 39. In order to ensure the filtering effect of the MBR membrane module 37, a back-flushing mechanism connected to the integrated water pipe 38 is further provided in the equipment room 32 for cleaning the MBR membrane module 37, so as to ensure that the MBR membrane module 37 can operate stably for a long time.
The implementation principle of the embodiment of the application is as follows: firstly, the baffle 48 is driven by the electric push rod 49 to move, so that the discharge holes are aligned with the discharge holes, then the driving motor 45 and the small-sized vibration motor 46 are started, so that the spreading box 43 reciprocates and discharges materials through the discharge holes, and the discharged filter materials form a hydrophobic oleophilic filter material layer on the surface of the primary filter tank 13.
Secondly, injecting the kitchen waste wastewater from the primary filter 13, wherein in the injection process, the filter screen 14 intercepts waste in the wastewater, and along with the injection of the wastewater, a hydrophobic oleophylic filter material layer floats on the water surface and continuously adsorbs grease in the kitchen waste wastewater to form a grease layer; when the wastewater in the primary filter 13 is in a steady flow state, the door plate 51 is opened through the air cylinder 52, so that the grease enters the collecting tank 12 along with the filter material through the oil outlet 111, and the oil-water separation is realized.
The separated wastewater is conveyed into the biochemical pool 2 through a sewage pump 62, anaerobic treatment and aerobic treatment are carried out in sequence, organic matters in the wastewater are degraded, and simultaneously odor generated in the biochemical treatment process is purified through a deodorization mechanism 7; the biochemically treated wastewater enters the MBR tank 31 in an overflow manner, is filtered by the MBR membrane module 37, and then sequentially enters the clean water tank 33 through the integrated water pipe 38, the water conveying pipe 391 and the water outlet pipe 392 under the action of the water pump 39.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A multi-stage pretreatment device for high-concentration wastewater of kitchen waste is characterized by comprising a pretreatment tank (1), a biochemical tank (2) and an MBR (membrane bioreactor) filter tank (3) which are sequentially connected along the sewage treatment direction, wherein the biochemical tank (2) is connected with a deodorization mechanism (7) for removing odor;
the top of the pretreatment tank (1) is open, a first partition plate (11) is fixedly connected in the pretreatment tank (1), the first partition plate (11) divides the inner space of the pretreatment tank (1) into a collection tank (12) and a primary filter tank (13), a paving mechanism (4) is arranged in the primary filter tank (13), the paving mechanism (4) can pave and fill a hydrophobic oleophylic filter material layer on the surface of wastewater, an oil discharge port (111) is formed in the first partition plate (11), and a gate (5) for opening and closing is arranged at the oil discharge port (111);
the spreading mechanism (4) comprises lead screws (41) rotatably connected to two opposite inner side walls of the primary filter tank (13), guide rods (42) fixedly connected to the two opposite inner side walls of the primary filter tank (13) and parallel to the lead screws (41), a spreading box (43) in threaded connection with the lead screws (41) and in sliding fit with the guide rods (42), and a driving motor (45) installed on the outer side wall of the primary filter tank (13) and connected with one end of each lead screw (41), hydrophobic and oleophylic filter materials are filled in the spreading box (43), and discharge holes are formed in the bottom of the spreading box (43); two sides of the material laying box (43) along the length direction are respectively provided with a small vibration motor (46);
the top in biochemical pond (2) is closed, and the rigid coupling has second baffle (23) for separating biochemical pond (2) inner space for anaerobism pond (21) and good oxygen pond (22) in biochemical pond (2), and second baffle (23) are close to the position at top and are equipped with first overflow weir, are connected with external communicating pipe (6) between preliminary filter (13) and anaerobism pond (21), install sewage solenoid valve (61) and sewage pump (62) on communicating pipe (6) in proper order.
2. The multistage pretreatment device for high-concentration wastewater of kitchen waste according to claim 1, characterized in that: and a filter screen (14) is arranged in the primary filter tank (13) and above the spreading device.
3. The multistage pretreatment device for high-concentration wastewater of kitchen waste according to claim 1, characterized in that: the material spreading box (43) is arranged along the length or width direction of the primary filter tank (13), and one side, far away from the discharge hole, of the material spreading box (43) is hinged with a cover plate.
4. The multistage pretreatment device for high-concentration wastewater of kitchen waste according to claim 3, characterized in that: the bottom of the material spreading box (43) is provided with a switch component for opening or closing the discharge hole; the switch component comprises L-shaped supporting plates (47) which are respectively fixedly connected to two ends of the bottom of the material paving box (43) in a relative arrangement mode, a baffle plate (48) which slides on the L-shaped supporting plates (47) and is attached to the bottom of the material paving box (43), and an electric push rod (49) which is installed on one side, away from the discharge hole, of the L-shaped supporting plate (47), a piston rod of the electric push rod (49) is fixedly connected with the end portion of the baffle plate (48) through an ear plate, and a discharge hole corresponding to the discharge hole is processed in the baffle plate (48).
5. The multistage pretreatment device for high-concentration wastewater of kitchen waste according to claim 1, characterized in that: the gate (5) comprises a door plate (51) which is positioned in the collecting tank (12) and is in sliding fit with the first partition plate (11), and an air cylinder (52) which is arranged on the upper edge of the first partition plate (11), wherein a piston rod of the air cylinder (52) is connected with the door plate (51) through an angle steel (53).
6. The multistage pretreatment device for high-concentration wastewater of kitchen waste according to claim 1, characterized in that: the deodorization mechanism (7) comprises an external deodorization box, branch pipes (71) respectively communicated with the anaerobic tank (21) and the aerobic tank (22), a main pipe (72) with one end connected with the two branch pipes (71) and the other end extending into the deodorization box, and an exhaust fan arranged in the main pipe (72).
7. The multistage pretreatment device for high-concentration wastewater of kitchen waste according to claim 6, characterized in that: the deodorization box comprises an acid removal chamber (73), a first delivery pipe (74), an alkali removal chamber (75), a second delivery pipe (76), an adsorption chamber (77) and an exhaust pipe (78), wherein the acid removal chamber (73) is filled with alkaline solution, the alkali removal chamber (75) is filled with acidic solution, and the adsorption chamber (77) is filled with activated carbon;
one end of the main pipe (72) far away from the branch pipe (71) extends into the lower part of the liquid level of the acid removing chamber (73);
one end of a first conveying pipe (74) is communicated with the acid removing chamber (73) and is positioned above the liquid level, the other end of the first conveying pipe (74) is communicated with the alkali removing chamber (75) and is positioned below the liquid level, one end of a second conveying pipe (76) is communicated with the alkali removing chamber (75) and is positioned above the liquid level, and the other end of the second conveying pipe (76) is communicated with the adsorption chamber (77) and is embedded in the activated carbon; an exhaust pipe (78) is connected to the adsorption chamber (77) at a position above the activated carbon.
8. The multistage pretreatment device for high-concentration wastewater of kitchen waste according to claim 1, characterized in that: a third partition plate (34) and a fourth partition plate (35) which divide the internal space of the MBR filter tank (3) into an MBR tank (31), an equipment room (32) and a clean water tank (33) are fixedly connected in the MBR filter tank (3), a wall plate is shared between the MBR tank (31) and the aerobic tank (22), and a second overflow weir is arranged on the wall plate;
an MBR membrane module (37) is installed in the MBR tank (31), the upper end and the lower end of the MBR membrane module (37) are connected with integrated water pipes (38), a water suction pump (39) is arranged in the equipment room (32), a water inlet of the water suction pump (39) is communicated with the two groups of integrated water pipes (38) through a water conveying pipe (391), and a water outlet of the water suction pump (39) is connected with the clean water tank (33) through a water outlet pipe (392).
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| CN114873836A (en) * | 2022-03-14 | 2022-08-09 | 河南沃克曼建设工程有限公司 | Kitchen slurry oil extraction system and processing method |
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