CN113620515B

CN113620515B - Kitchen garbage collection vehicle washes effluent treatment, recovery unit

Info

Publication number: CN113620515B
Application number: CN202110881892.0A
Authority: CN
Inventors: 王文标; 李勇; 幸响付; 毛勇先; 李石磊; 王陆军; 佘凤胜; 张立志
Original assignee: Shanghai Hones Environmental Protection Technology Co ltd
Current assignee: Shanghai Hones Environmental Protection Technology Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-04-12
Anticipated expiration: 2041-08-02
Also published as: CN113620515A

Abstract

The invention discloses a kitchen waste collecting vehicle flushing wastewater treatment and recovery device, which relates to the technical field of wastewater treatment, and is characterized in that a coagulation tank, a flocculation tank, a primary sedimentation tank, an anoxic tank, a first aerobic tank, a second aerobic tank, an MBR membrane tank, a grid, a sludge tank, a spiral-stacked dehydrator, a clear water tank and a matched dosing system are integrated into the same device, so that the device is compact in structure, small in occupied area and low in cost, the cost is obviously reduced compared with that of a traditional water treatment facility, the traditional facility is high in cost and large in occupied area, takes a long time for temporary building, is not convenient enough, and is not suitable for treating the flushing wastewater of a kitchen waste collecting vehicle with a small water amount The washing wastewater treatment efficiency is high, the treatment effect is good, and the reduction of sludge and the recycling of sewage are realized.

Description

Kitchen garbage collection vehicle washes effluent treatment, recovery unit

Technical Field

The invention relates to the field of wastewater treatment, in particular to a device for treating and recovering flushing wastewater of a kitchen waste collection vehicle.

Background

After carrying out waste classification collection and processing certainly, kitchen garbage collection vehicle is behind the uninstallation rubbish, before returning the parking center, need wash the vehicle, produces from this and washes waste water. The concentration of the flushing wastewater is not as high as that of the kitchen waste extrusion wastewater, but is far higher than the quality of domestic sewage, so that the wastewater cannot be directly subjected to nano-tube treatment, and the treatment difficulty is high.

In addition, the kitchen waste collecting vehicle parked in one parking lot is generally 20-30About 5-10m of wastewater is produced per day³The water quantity is small, and if traditional treatment facilities are built for treatment, the treatment is not economical, and for the wastewater, a corresponding treatment method and a corresponding treatment device are not available at present, so that the problem that the kitchen waste collection vehicle washes the wastewater is a problem in the sewage treatment technology.

Therefore, a kitchen waste collecting vehicle washing wastewater treatment and recovery device which is low in cost, small in occupied space, convenient to use and good in wastewater treatment effect is urgently needed to solve the problems.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a device for treating and recovering the flushing wastewater of a kitchen waste collection vehicle, which comprises the following steps: through with coagulating basin, flocculation basin, preliminary sedimentation tank, oxygen deficiency pond, first good oxygen pond, second good oxygen pond, MBR membrane cisterna, grid, sludge impoundment, fold spiral shell hydroextractor, clean water basin, supporting medicine system integration to same device in, solved and still lacked corresponding processing method and device at present, lead to kitchen garbage collection vehicle to wash the problem that waste water is difficult to solve.

The purpose of the invention can be realized by the following technical scheme:

a kitchen waste collecting vehicle washing wastewater treatment and recovery device comprises a coagulation tank, a flocculation tank, a primary sedimentation tank, an anoxic tank, a first aerobic tank, a second aerobic tank, an MBR membrane tank, a grid, a sludge tank, a spiral-stacked dewaterer, a clear water tank and a matched dosing system, wherein the coagulation tank and the flocculation tank are arranged at one end of the clear water tank, the primary sedimentation tank is arranged at one end of the coagulation tank and the flocculation tank, which is far away from the clear water tank, the anoxic tank is arranged at one end of the primary sedimentation tank, the first aerobic tank is arranged at one end of the anoxic tank, which is far away from the primary sedimentation tank, the second aerobic tank is arranged at one side of the first aerobic tank, the MBR membrane tank is arranged at one end of the second aerobic tank, one side of the MBR membrane tank is connected with the primary sedimentation tank and the anoxic tank, a membrane module is installed in the MBR membrane tank, and the sludge tank is arranged at one end of the MBR membrane tank, which is far away from the second aerobic tank, install the grid on the sludge impoundment, one side and the pond of coagulating, the clean water basin of sludge impoundment are connected, the one end in sludge impoundment, clean water basin is provided with the equipment room, one side of equipment room is provided with supporting medicine system, response retrieval and utilization water pump, the opposite side of equipment room is provided with the switch board, folds spiral shell hydroextractor.

As a further scheme of the invention: the clean water tank is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is communicated to the grating, and the grating is connected to the inner cavity of the coagulation tank through a pipeline.

As a further scheme of the invention: supporting medicine system includes first medicine storage tank, second medicine storage tank, third medicine storage tank, fourth medicine storage tank, fifth medicine storage tank, NaClO is stored to the inner chamber of first medicine storage tank, citric acid is stored to the inner chamber of second medicine storage tank, PAM-is stored to the inner chamber of third medicine storage tank, PAC is stored to the inner chamber of fourth medicine storage tank, PAM + is stored to the inner chamber of fifth medicine storage tank.

As a further scheme of the invention: the utility model discloses a sewage treatment device, including coagulation tank, flocculation tank, MBR membrane tank, first water hole of crossing is seted up to the position that coagulation tank, flocculation tank junction are close to the top, flocculation tank, the first position that sinks the tank junction and be close to the middle part have been seted up the second and have crossed the water hole, and the first position that sinks the tank junction and be close to the top has been seted up the third and has crossed the water hole, the water pipe is installed to the position that anoxic tank, first good oxygen tank junction are close to the top, the first good oxygen tank, the second good oxygen tank junction have been seted up the fourth and have crossed the water hole near the position of bottom, the second is good oxygen tank, MBR membrane tank junction has been close to the position of top and has been seted up the fifth and has crossed the water hole, the mud back flow is installed to the junction in MBR membrane tank, oxygen deficiency pond.

As a further scheme of the invention: install in the sludge impoundment and fold the spiral shell and advance the dredge pump, fold the output that the spiral shell advances the dredge pump and communicate to the input that folds the spiral shell hydroextractor through the pipeline, install sedimentation tank mud pipe in the primary sedimentation tank, install MBR membrane cisterna mud pipe in the MBR membrane cisterna, sedimentation tank mud pipe, MBR membrane cisterna mud pipe all communicate to the sludge impoundment.

As a further scheme of the invention: the utility model discloses a sewage treatment device, including equipment room, clear water pond, MBR membrane cisterna fan, aeration pipe, MBR membrane cisterna fan, aeration pipe intercommunication a plurality of aeration pipe, install the aeration pipe ball valve on the aeration pipe, a plurality of the aeration pipe is arranged in first good oxygen pond, the good oxygen pond respectively, MBR membrane cisterna fan intercommunication membrane cisterna stirring trachea, membrane cisterna stirring trachea communicates MBR membrane cisterna, MBR membrane cisterna intercommunication membrane cisterna mud discharging trachea, just sink the pond intercommunication and just sink mud discharging trachea, anoxia pond intercommunication anoxia stirring trachea, membrane cisterna mud discharging trachea, just sink mud discharging trachea, anoxia stirring trachea and all communicate aerobic pond fan, all install the solenoid valve on membrane cisterna mud discharging trachea, just sink mud discharging trachea, anoxia stirring trachea.

As a further scheme of the invention: the device is characterized in that one end of the device room close to the clean water tank is provided with a backwashing water pump, one end of the device room close to the clean water tank is provided with a water production pump, the backwashing water pump and the water production pump are communicated to the MBR membrane tank through pipelines, a backwashing electric valve and an electromagnetic flowmeter are arranged on the pipeline communicated with the backwashing water pump, and the pipeline communicated with the water production pump is provided with a water production electric valve, a water production pressure sensor and an electromagnetic flowmeter.

As a further scheme of the invention: the kitchen waste collecting vehicle flushing wastewater treatment and recovery device comprises the following flushing wastewater treatment and recovery processes:

the method comprises the following steps: washing the kitchen waste collecting vehicle by using clean water or recycled water from a clean water tank, and enabling washing wastewater to enter an adjusting tank after passing through a coarse grating;

step two: the flushing wastewater regulated by the regulating tank enters a coagulation tank through a grid, the grid slag enters a sludge tank, PAC is added into the coagulation tank, the flushing wastewater is coagulated in the coagulation tank and then enters a flocculation tank through a first water passing hole, PAM-is added, the flushing wastewater is flocculated in the flocculation tank and then enters a primary sedimentation tank through a second water passing hole, the flushing wastewater enters an anoxic tank through a third water passing hole, and the flocculated sedimentation enters the sludge tank through a sedimentation tank sludge discharge pipe;

step three: the flushing wastewater is subjected to microbial treatment in the anoxic tank, is subjected to organic matter adsorption and degradation and denitrification, then enters the first aerobic tank through the water pipe, is communicated with the second aerobic tank through the fourth water through hole, is blown into the first aerobic tank and the second aerobic tank through the aerobic tank fan, is subjected to aerobic microbial treatment, and enters the MBR membrane tank through the fifth water through hole after being subjected to organic matter adsorption and degradation and ammonia nitrogen adsorption;

step four: the flushing wastewater is filtered by an MBR membrane module in an MBR membrane tank and then pumped into a clean water tank to be discharged or reused for flushing the kitchen waste collection vehicle, part of sludge in the MBR membrane tank flows back to the anoxic tank, and the rest sludge is discharged to the sludge tank;

step five: sewage in the sludge pond overflows to the equalizing basin, and mud is carried to folding spiral shell hydroextractor through folding spiral shell mud feeding pump, adds PAM +, mud outward transport after folding spiral shell mud feeding pump dehydration before carrying to folding spiral shell hydroextractor, and the filtrating of wherein deviating from gets into the equalizing basin.

The invention has the beneficial effects that:

the invention relates to a kitchen waste collecting vehicle flushing wastewater treatment and recovery device, which flushes a kitchen waste collecting vehicle by using clean water or reuse water from a clean water tank, the flushing wastewater enters an adjusting tank after passing through a coarse grid, the flushing wastewater adjusted by the adjusting tank enters a coagulation tank through the grid, grid slag enters a sludge tank, PAC is added into the coagulation tank, the flushing wastewater enters a flocculation tank through a first water through hole after coagulation in the coagulation tank, PAM is added, the flushing wastewater enters a primary sedimentation tank through a second water through hole after flocculation in the flocculation tank, the flushing wastewater enters an anoxic tank through a third water through hole, flocculation precipitation enters the sludge tank through a sedimentation tank sludge discharge pipe, the flushing wastewater is treated by microorganisms in the anoxic tank, adsorbed, degraded and denitrified by denitrification, and then enters a first aerobic tank through a water pipe, the first aerobic tank, The second aerobic tank is communicated through a fourth water passing hole, oxygen is blown into the first aerobic tank and the second aerobic tank through an aerobic tank fan, flushing wastewater is treated by aerobic microorganisms, is absorbed and degraded by organic matters and ammonia nitrogen and then enters an MBR membrane tank through a fifth water passing hole, the flushing wastewater is filtered by an MBR membrane module in the MBR membrane tank and then is pumped into a clean water tank for discharging or reusing for flushing a kitchen waste collection vehicle, part of sludge in the MBR membrane tank flows back to an anoxic tank, the rest sludge is discharged to a sludge tank, sewage in the sludge tank overflows to a regulating tank, the sludge is conveyed to a spiral shell stacking dehydrator through a spiral shell stacking sludge inlet pump, PAM + is added before being conveyed to the spiral shell stacking dehydrator, the sludge is dewatered by a spiral shell stacking inlet pump and then is transported outside, and the separated filtrate enters the regulating tank;

this wash waste water treatment, recovery unit is through with the coagulating basin, the flocculation basin, just sink the pond, the oxygen deficiency pond, first good oxygen pond, the good oxygen pond of second, the MBR membrane cisterna, the grid, the sludge impoundment, fold spiral shell hydroextractor, the clean water basin, supporting medicine system is integrated to same device, compact structure, small in floor area, low cost, more traditional water treatment facility cost obviously reduces, traditional facility is the native pond of building, and is with high costs, it is big to take up an area of, build consuming time for a long time temporarily, it is convenient inadequately, be not suitable for the little kitchen garbage collection vehicle of water yield to wash the processing of waste water, but the device can ask to transport to the place of use to install immediately after the production, need not to build temporarily, save time, and can move along with the aversion of transfer station, realize reuse. Therefore, the device has the advantages of compact arrangement, low investment cost, low operating cost, convenient operation and operation maintenance, high treatment efficiency of flushing wastewater, good treatment effect, and realization of sludge reduction and sewage recycling.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a kitchen waste collection vehicle washing wastewater treatment and recovery device in the invention;

FIG. 2 is a side view of the kitchen garbage collection vehicle washing wastewater treatment and recovery device of the invention;

FIG. 3 is a schematic view of the internal structures of a first aerobic tank and a second aerobic tank in the invention;

FIG. 4 is a process flow diagram for treating and recycling the kitchen waste collecting vehicle washing wastewater.

In the figure: 101. a water inlet pipe; 102. a water outlet pipe; 103. a coagulation tank; 104. a flocculation tank; 105. a primary sedimentation tank; 106. an anoxic tank; 107. a first aerobic tank; 108. a second aerobic tank; 109. an MBR membrane tank; 110. an MBR membrane module; 111. a grid; 112. a sludge tank; 113. a stack screw mud pump; 114. a control cabinet; 115. a spiral shell stacking dehydrator; 116. a first drug storage tank; 117. a second drug storage tank; 118. a third drug storage tank; 119. a fourth medicine storage tank; 120. a fifth medicine storage tank; 121. an induction reuse water pump; 122. a membrane pool stirring air pipe; 123. a sludge discharge pipe of the membrane pool; 124. primarily settling a sludge gas discharging pipe; 125. an anoxic stirring gas pipe; 126. an aeration main pipe; 127. an electromagnetic valve; 128. an aerobic pool fan; 129. an MBR membrane tank fan; 130. backwashing the water pump; 131. backwashing the electric valve; 132. a water production pump; 133. a water production pressure sensor; 134. an electromagnetic flow meter; 135. a water production electric valve; 136. a sedimentation tank sludge discharge pipe; 137. a sludge discharge pipe of the MBR membrane tank; 138. an aeration pipe; 139. an aeration pipe ball valve; 140. a clean water tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1 to 4, the present embodiment is a kitchen waste collection vehicle washing wastewater treatment and recovery device, which includes a coagulation tank 103, a flocculation tank 104, a primary sedimentation tank 105, an anoxic tank 106, a first aerobic tank 107, a second aerobic tank 108, an MBR membrane tank 109, a grid 111, a sludge tank 112, a spiral-stacked dehydrator 115, a clear water tank 140, and a matching drug adding system, wherein the coagulation tank 103 and the flocculation tank 104 are disposed at one end of the clear water tank 140, the primary sedimentation tank 105 is disposed at one end of the coagulation tank 103 and the flocculation tank 104, the anoxic tank 106 is disposed at one end of the primary sedimentation tank 105, which is far away from the coagulation tank 103 and the flocculation tank 104, the first aerobic tank 107 is disposed at one end of the anoxic tank 106, which is far away from the primary sedimentation tank 105, the second aerobic tank 108 is disposed at one side of the first aerobic tank 107, the membrane tank 109 is disposed at one end of the second aerobic tank 108, and one side of the MBR membrane tank 109, which is far away from the primary sedimentation tank 105, the MBR tank 105, the sludge tank 112, and the sludge tank 112, are disposed at least one end of the MBR membrane tank 104, The oxygen deficiency pond 106 is connected, install MBR membrane module 110 in the MBR membrane cisterna 109, the one end of keeping away from the good oxygen pond 108 of second of MBR membrane cisterna 109 is provided with sludge impoundment 112, install grid 111 on the sludge impoundment 112, one side and the pond 103 that thoughtlessly congeals, the clean water basin 140 of sludge impoundment 112 are connected, the one end of sludge impoundment 112, clean water basin 140 is provided with the equipment room, one side of equipment room is provided with supporting medicine system, response retrieval and utilization water pump 121, the opposite side of equipment room is provided with switch board 114, folds spiral shell hydroextractor 115.

The clean water tank 140 is provided with a water inlet pipe 101 and a water outlet pipe 102, the water inlet pipe 101 is communicated with a grating 111, and the grating 111 is connected to the inner cavity of the coagulation tank 103 through a pipeline.

Supporting medicine system includes first medicine storage tank 116, second medicine storage tank 117, third medicine storage tank 118, fourth medicine storage tank 119, fifth medicine storage tank 120, NaClO is stored to the inner chamber of first medicine storage tank 116, citric acid is stored to the inner chamber of second medicine storage tank 117, PAM is stored to the inner chamber of third medicine storage tank 118-, PAC is stored to the inner chamber of fourth medicine storage tank 119, PAM + is stored to the inner chamber of fifth medicine storage tank 120.

The utility model discloses a sewage treatment device, including coagulation tank 103, flocculation tank 104, flocculation tank 105, aerobic tank 107, MBR membrane pool 109, the junction of MBR membrane pool 109, flocculation tank 104, the junction of primary sedimentation tank 105 has seted up the second near the position at middle part and has crossed the water hole, the junction of primary sedimentation tank 105, anoxic tank 106 has seted up the third near the position at top and has crossed the water hole, the position that anoxic tank 106, first aerobic tank 107 junction are close to the top is installed the water pipe, the position that first aerobic tank 107, second aerobic tank 108 are close to the bottom has seted up the fourth and has crossed the water hole, the position that second aerobic tank 108, MBR membrane pool 109 junction are close to the top has seted up the fifth and has crossed the water hole, the mud back flow is installed to the junction of MBR membrane pool 109, anoxic tank 106.

The sludge tank 112 is internally provided with a stack snail sludge inlet pump 113, the output end of the stack snail sludge inlet pump 113 is communicated to the input end of the stack snail dehydrator 115 through a pipeline, the primary sedimentation tank 105 is internally provided with a sedimentation tank sludge discharge pipe 136, the MBR membrane tank 109 is internally provided with an MBR membrane tank sludge discharge pipe 137, and the sedimentation tank sludge discharge pipe 136 and the MBR membrane tank sludge discharge pipe 137 are communicated to the sludge tank 112; the primary sedimentation tank 105 and the MBR membrane tank 109 are periodically discharged into a sludge tank 112 through air stripping, and sludge in the sludge tank 112 is dewatered by a screw-overlapping dewatering machine 115 and then is treated together with the extruded garbage.

An aerobic pool fan 128 and an MBR membrane pool fan 129 are arranged at one end of the equipment room close to the clean water pool 140, the aerobic pool fan 128 is communicated with the aeration main pipe 126, the aeration main pipe 126 is communicated with a plurality of aeration pipes 138, the aeration pipe 138 is provided with an aeration pipe ball valve 139, a plurality of aeration pipes 138 are respectively positioned in the first aerobic tank 107 and the second aerobic tank 108, the MBR membrane tank fan 129 is communicated with a membrane tank stirring air pipe 122, the membrane tank stirring air pipe 122 is communicated with the MBR membrane tank 109, the MBR membrane tank 109 is communicated with a membrane tank sludge discharge air pipe 123, the primary sedimentation tank 105 is communicated with a primary sedimentation sludge discharge air pipe 124, the anoxic tank 106 is communicated with an anoxic stirring air pipe 125, the membrane tank sludge discharge air pipe 123, the primary sedimentation sludge discharge air pipe 124 and the anoxic stirring air pipe 125 are communicated with an aerobic tank fan 128, the membrane tank sludge discharge air pipe 123, the primary sedimentation sludge discharge air pipe 124 and the anoxic stirring air pipe 125 are all provided with electromagnetic valves 127; the aerobic pool fan 128 continuously supplies air to the first aerobic pool 107 and the second aerobic pool 108, and the operation time of the aerobic pool fan 128 can be adjusted according to the quality of inlet water; simultaneously, air sources are provided for the membrane pool sludge discharge air pipe 123, the primary sedimentation sludge discharge air pipe 124 and the anoxic stirring air pipe 125, and the membrane pool sludge discharge air pipe, the primary sedimentation sludge discharge air pipe and the anoxic stirring air pipe intermittently run; the MBR membrane tank fan 129 provides aeration to the MBR membrane modules 110, slowing down membrane fouling.

A backwashing water pump 130 is installed at one end of the equipment room close to the clean water tank 140, a water production pump 132 is installed at one end of the equipment room close to the clean water tank 140, the backwashing water pump 130 and the water production pump 132 are both communicated to the MBR membrane tank 109 through pipelines, a backwashing electric valve 131 and an electromagnetic flow meter 134 are installed on the pipeline communicated with the backwashing water pump 130, and a water production electric valve 135, a water production pressure sensor 133 and an electromagnetic flow meter 134 are installed on the pipeline communicated with the water production pump 132; the water production pump 132 is a water production suction pump of an MBR membrane, the backwashing water pump 130 is a backwashing water pump 130 of the MBR membrane, and the water production electric valve 135, the water production pressure sensor 133 and the electromagnetic flow meter 134 of the pipeline are respectively matched with water production and backwashing for use; the MBR membrane module 110 is backwashed to remove stains attached to the MBR membrane module 110, inorganic substances remaining on the MBR membrane module 110 can be removed using citric acid, and organic substances remaining on the MBR membrane module 110 can be removed using NaClO.

Referring to fig. 1 to 4, the working process of the kitchen waste collecting vehicle washing wastewater treatment and recovery device in the embodiment is as follows:

the method comprises the following steps: washing the kitchen waste collection vehicle by using clean water or recycled water from a clean water tank 140, and enabling washing wastewater to enter an adjusting tank after passing through a coarse grating;

step two: the flushing wastewater regulated by the regulating tank enters the coagulation tank 103 through the grating 111, the grating slag enters the sludge tank 112, PAC is added into the coagulation tank 103, the flushing wastewater enters the flocculation tank 104 through a first water passing hole after being coagulated in the coagulation tank 103, PAM-is added, the flushing wastewater enters the primary sedimentation tank 105 through a second water passing hole after being flocculated in the flocculation tank 104, the flushing wastewater enters the anoxic tank 106 through a third water passing hole, and the flocculated sediment enters the sludge tank 112 through the sedimentation tank sludge discharge pipe 136;

step three: the washing wastewater is subjected to microbial treatment in the anoxic tank 106, is subjected to organic matter adsorption, degradation and denitrification, then enters the first aerobic tank 107 through a water pipe, the first aerobic tank 107 and the second aerobic tank 108 are communicated through a fourth water through hole, oxygen is blown into the first aerobic tank 107 and the second aerobic tank 108 through the aerobic tank fan 128, the washing wastewater is subjected to aerobic microbial treatment, and is subjected to organic matter adsorption, degradation and ammonia nitrogen adsorption, and then enters the MBR membrane tank 109 through a fifth water through hole;

step four: the flushing wastewater is filtered by an MBR membrane module 110 in an MBR membrane tank 109 and then pumped into a clean water tank 140 for discharging or reusing for flushing the kitchen waste collection vehicle, part of sludge in the MBR membrane tank 109 flows back to the anoxic tank 106, and the rest sludge is discharged to a sludge tank 112;

step five: sewage in the sludge tank 112 overflows to the adjusting tank, sludge is conveyed to the screw-overlapping dehydrator 115 through the screw-overlapping sludge inlet pump 113, PAM + is added before the sludge is conveyed to the screw-overlapping dehydrator 115, the sludge is transported out after being dehydrated by the screw-overlapping sludge inlet pump 113, and the dehydrated filtrate enters the adjusting tank.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Claims

1. A kitchen waste collection vehicle washing wastewater treatment and recovery device is characterized by comprising a coagulation tank (103), a flocculation tank (104), a primary sedimentation tank (105), an anoxic tank (106), a first aerobic tank (107), a second aerobic tank (108), an MBR membrane tank (109), a grid (111), a sludge tank (112), a spiral-wound water extractor (115), a clear water tank (140) and a matched dosing system, wherein the coagulation tank (103) and the flocculation tank (104) are arranged at one end of the clear water tank (140), the primary sedimentation tank (105) is arranged at one end of the coagulation tank (103) and the flocculation tank (104) far away from the clear water tank (140), the anoxic tank (106) is arranged at one end of the primary sedimentation tank (103) far away from the coagulation tank (103) and the flocculation tank (104), the first aerobic tank (107) is arranged at one end of the anoxic tank (106) far away from the primary sedimentation tank (105), the second aerobic tank (108) is arranged at one side of the first aerobic tank (107), an MBR membrane tank (109) is arranged at one end of the second aerobic tank (108), one side of the MBR membrane tank (109) is connected with the primary sedimentation tank (105) and the anoxic tank (106), an MBR membrane module (110) is installed in the MBR membrane tank (109), a sludge tank (112) is arranged at one end, away from the second aerobic tank (108), of the MBR membrane tank (109), a grid (111) is installed on the sludge tank (112), one side of the sludge tank (112) is connected with the coagulation tank (103) and the clean water tank (140), an equipment room is arranged at one end of the sludge tank (112) and the clean water tank (140), a matched dosing system and an induction recycling water pump (121) are arranged at one side of the equipment room, and a control cabinet (114) and a screw-overlapping dehydrator (115) are arranged at the other side of the equipment room;

the kitchen waste collecting vehicle flushing wastewater treatment and recovery device comprises the following flushing wastewater treatment and recovery processes:

the method comprises the following steps: washing the kitchen waste collection vehicle by using clean water or reuse water from a clean water tank (140), wherein the washing wastewater enters an adjusting tank after passing through a coarse grating;

step two: the flushing wastewater regulated by the regulating tank enters a coagulation tank (103) through a grating (111), the grating slag enters a sludge tank (112), PAC is added into the coagulation tank (103), the flushing wastewater enters a flocculation tank (104) through a first water passing hole after being coagulated in the coagulation tank (103), PAM-is added, the flushing wastewater enters a primary sedimentation tank (105) through a second water passing hole after being flocculated in the flocculation tank (104), the flushing wastewater enters an anoxic tank (106) through a third water passing hole, and the flocculation sedimentation enters the sludge tank (112) through a sedimentation tank sludge discharge pipe (136);

step three: the method comprises the following steps that flushing wastewater is subjected to microbial treatment in an anoxic tank (106), adsorbed, degraded and denitrified and then enters a first aerobic tank (107) through a water pipe, the first aerobic tank (107) and a second aerobic tank (108) are communicated through a fourth water through hole, oxygen is blown into the first aerobic tank (107) and the second aerobic tank (108) through an aerobic tank fan (128), the flushing wastewater is subjected to aerobic microbial treatment, and the flushing wastewater is subjected to adsorption, degradation of organic matters and ammonia nitrogen and then enters an MBR membrane tank (109) through a fifth water through hole;

step four: the washing wastewater is filtered by an MBR membrane module (110) in an MBR membrane tank (109) and then pumped into a clean water tank (140) to be discharged or reused for washing the kitchen waste collection vehicle, part of sludge in the MBR membrane tank (109) flows back to an anoxic tank (106), and the rest sludge is discharged to a sludge tank (112);

step five: sewage in the sludge pool (112) overflows to the adjusting pool, sludge is conveyed to the screw-stacking dewaterer (115) through the screw-stacking sludge inlet pump (113), PAM + is added before the sludge is conveyed to the screw-stacking dewaterer (115), the sludge is dewatered by the screw-stacking sludge inlet pump (113) and then is transported outwards, and the removed filtrate enters the adjusting pool.

2. The kitchen waste collection vehicle washing wastewater treatment and recovery device according to claim 1, wherein a water inlet pipe (101) and a water outlet pipe (102) are installed on the clean water tank (140), the water inlet pipe (101) is communicated to the grating (111), and the grating (111) is connected to the inner cavity of the coagulation tank (103) through a pipeline.

3. The kitchen waste collection vehicle washing wastewater treatment and recovery device according to claim 1, wherein the matched dosing system comprises a first drug storage tank (116), a second drug storage tank (117), a third drug storage tank (118), a fourth drug storage tank (119) and a fifth drug storage tank (120), NaClO is stored in the inner cavity of the first drug storage tank (116), citric acid is stored in the inner cavity of the second drug storage tank (117), PAM is stored in the inner cavity of the third drug storage tank (118), PAC is stored in the inner cavity of the fourth drug storage tank (119), and PAM + is stored in the inner cavity of the fifth drug storage tank (120).

4. The kitchen waste collection vehicle washing wastewater treatment and recovery device according to claim 1, it is characterized in that a first water through hole is arranged at the position close to the top of the joint of the coagulation tank (103) and the flocculation tank (104), a second water passing hole is arranged at the position close to the middle part of the joint of the flocculation tank (104) and the primary sedimentation tank (105), a third water passing hole is arranged at the position close to the top part of the joint of the primary sedimentation tank (105) and the anoxic tank (106), a water pipe is arranged at the position close to the top of the joint of the anoxic tank (106) and the first aerobic tank (107), a fourth water through hole is arranged at the position close to the bottom of the joint of the first aerobic tank (107) and the second aerobic tank (108), a fifth water through hole is arranged at the position close to the top of the joint of the second aerobic tank (108) and the MBR membrane tank (109), and a sludge return pipe is arranged at the joint of the MBR membrane tank (109) and the anoxic tank (106).

5. The kitchen waste collection vehicle washing wastewater treatment and recovery device according to claim 1, wherein a stack snail sludge inlet pump (113) is installed in the sludge tank (112), the output end of the stack snail sludge inlet pump (113) is communicated to the input end of the stack snail dehydrator (115) through a pipeline, a sedimentation tank sludge discharge pipe (136) is installed in the primary sedimentation tank (105), an MBR membrane tank sludge discharge pipe (137) is installed in the MBR membrane tank (109), and both the sedimentation tank sludge discharge pipe (136) and the MBR membrane tank sludge discharge pipe (137) are communicated to the sludge tank (112).

6. The kitchen waste collection vehicle washing wastewater treatment and recovery device according to claim 1, wherein an aerobic tank fan (128) and an MBR membrane tank fan (129) are installed at one end of the equipment room close to the clean water tank (140), the aerobic tank fan (128) is communicated with an aeration main pipe (126), the aeration main pipe (126) is communicated with a plurality of aeration pipes (138), the aeration pipes (138) are provided with aeration pipe ball valves (139), the aeration pipes (138) are respectively located in a first aerobic tank (107) and a second aerobic tank (108), the MBR membrane tank fan (129) is communicated with a membrane tank stirring air pipe (122), the membrane tank stirring air pipe (122) is communicated with an MBR membrane tank (109), the membrane tank (109) is communicated with a membrane tank sludge air discharge pipe (123), the primary settling tank (105) is communicated with a primary settling sludge discharge air pipe (124), the anaerobic tank (106) is communicated with an anaerobic stirring air pipe (125), the membrane tank sludge air discharging pipe (123), the primary sedimentation sludge air discharging pipe (124) and the anaerobic stirring air pipe (125) are communicated to an aerobic tank fan (128), and electromagnetic valves (127) are mounted on the membrane tank sludge air discharging pipe (123), the primary sedimentation sludge air discharging pipe (124) and the anaerobic stirring air pipe (125).

7. The kitchen waste collection vehicle washing wastewater treatment and recovery device according to claim 1, wherein a backwashing water pump (130) is installed at one end of the equipment room close to the clean water tank (140), a water production pump (132) is installed at one end of the equipment room close to the clean water tank (140), the backwashing water pump (130) and the water production pump (132) are both communicated to the MBR membrane tank (109) through pipelines, a backwashing electric valve (131) and an electromagnetic flow meter (134) are installed on the pipeline communicated with the backwashing water pump (130), and a water production electric valve (135), a water production pressure sensor (133) and an electromagnetic flow meter (134) are installed on the pipeline communicated with the water production pump (132).