CN213793412U - Distributed biochemical treatment system for kitchen waste - Google Patents

Abstract

The utility model belongs to the technical field of kitchen garbage handles, a distributing type kitchen garbage biochemical treatment system is disclosed. This distributing type kitchen garbage biochemical treatment system includes the refuse treatment system, and the refuse treatment system is including consecutive rubbish temporary storage device, dry dewatering device and biochemical fermenting installation, and dry dewatering device sets to can carry out dry dehydration to the default through the vapor recompression technique to kitchen garbage. Wherein, distributing type kitchen garbage biochemical treatment system is still including the condensate water pipeline that communicates dry dewatering device, biochemical fermentation device and rubbish temporary storage device in proper order to make the condensate water that produces in the dry dewatering device discharge again behind biochemical fermentation device and the rubbish temporary storage device in proper order, with the waste heat recovery who realizes the condensate water. The utility model discloses a distributing type kitchen garbage biochemical treatment system makes kitchen garbage can satisfy its suitable biochemical treatment's conditional requirement when biochemical treatment, can also reduce system's energy consumption, energy saving simultaneously effectively.

Description

Distributed biochemical treatment system for kitchen waste

Technical Field

The utility model belongs to the technical field of kitchen garbage handles, concretely relates to distributing type kitchen garbage biochemical treatment system.

Background

The kitchen waste is complex in components, mainly contains organic substances such as starch, dietary fiber and animal fat, is high in water content, is easy to decay and generates offensive odor, and therefore is difficult to treat. According to the characteristics of the kitchen waste, the necessary pretreatment and then biodegradation treatment (i.e. biochemical treatment) are good treatment modes, the biochemical treatment has two modes of aerobic fermentation and anaerobic fermentation, the aerobic fermentation can generally produce organic fertilizer, and the anaerobic fermentation can generally produce methane. For centralized large-scale kitchen waste treatment, anaerobic fermentation is adopted, and the generated biogas can be further recycled. Because the sources of the kitchen waste are dispersed, higher transportation cost is inevitably brought to centralized treatment, and secondary spilling in the transportation process is caused, so that distributed on-site treatment is a better choice sometimes. Distributed processing generally arranges processing stations near the source of kitchen waste and is located in areas with dense personnel, so that waste processing efficiency is high, energy consumption is low, and safety and reliability are required; secondly, the floor area is required to be small, and no secondary pollution is caused; thirdly, as the operators of the common stations are few, the treatment process is simple in process and convenient to operate. Because the traditional biochemical treatment mode has the problems of long treatment time, complex process and the like no matter anaerobic treatment or aerobic treatment, and the anaerobic treatment mode can also generate flammable and explosive biogas with higher danger, the traditional biochemical treatment mode is not suitable for the treatment of distributed kitchen waste.

At present, the conventional aerobic biochemical treatment is carried out in equipment, the equipment is provided with mechanical stirring and forced heating and ventilation, and the equipment has the greatest characteristic of high treatment speed (generally, the retention time is 1-3 days), and the equipment occupies a small area due to short retention time. For a slightly large-scale device (such as the treatment capacity is more than 2 tons/day), the process generally comprises the steps of crushing, then mechanically extruding and dehydrating, feeding the dehydrated materials into a biochemical bin for aerobic biochemical treatment, and feeding the sewage into a water treatment system.

However, in the biochemical treatment of the kitchen waste in the prior art, because the kitchen waste has complex components, the moisture content of the mechanically dehydrated material can still reach 65-70% generally, and the moisture content suitable for the aerobic treatment is 50-60%, the mechanically dehydrated material is easy to form an anaerobic environment in biochemical equipment, and the aerobic degradation difficulty is high, so that the condition requirement suitable for the biochemical treatment cannot be met. And as the biochemical treatment time is short (generally less than 72 hours), the water content in the kitchen waste cannot be effectively reduced, and simultaneously viruses, pathogenic bacteria and pathogenic microorganisms which may be generated during the storage period of the kitchen waste cannot be well killed, so that harmful substances still exist after the kitchen waste is treated. In addition, the steam of material after the dehydration is usually directly discharged to exhaust-gas treatment system to waste the waste heat in the steam, caused the waste of usable energy.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned whole or partial problem, the utility model aims to provide a distributing type kitchen garbage biochemical treatment system to make kitchen garbage can satisfy its suitable biochemical treatment's condition requirement when biochemical treatment, can also reduce system's energy consumption, energy saving effectively simultaneously.

This distributing type kitchen garbage biochemical treatment system is including being used for carrying out the refuse treatment system of preliminary treatment and aerobic fermentation to kitchen garbage, the refuse treatment system is including consecutive rubbish temporary storage device, dry dewatering device and biochemical fermenting installation, rubbish temporary storage device is used for keeping in kitchen garbage, dry dewatering device sets to can carry out dry dehydration to the default through steam recompression technique to kitchen garbage, biochemical fermenting installation is used for carrying out aerobic biochemical fermentation with kitchen garbage and discharges to outside. Wherein, distributing type kitchen garbage biochemical treatment system is still including the condensate water pipeline that communicates dry dewatering device, biochemical fermentation device and rubbish temporary storage device in proper order to make the condensate water that produces in the dry dewatering device discharge again behind biochemical fermentation device and the rubbish temporary storage device in proper order, with the waste heat recovery who realizes the condensate water.

Further, dry dewatering device includes vacuum dryer, vacuum dryer is including the sealed casing that has steam jacket, first vapour and liquid separator and vapor compressor, be formed with the feed inlet on the sealed casing, the discharge gate, desicator comdenstion water backward flow mouth and steam outlet, be formed with steam inlet and desicator comdenstion water export on the steam jacket, wherein, steam outlet, the gas inlet of first vapour and liquid separator, vapor compressor and steam inlet link to each other in proper order, the liquid outlet of first vapour and liquid separator links to each other with desicator comdenstion water backward flow mouth, desicator comdenstion water export links to each other through condensate water pipeline and biochemical fermentation device's comdenstion water entry.

Furthermore, the drying and dehydrating device also comprises a second gas-liquid separator and a condensate pump, wherein a dryer condensate outlet, the second gas-liquid separator and the condensate pump are sequentially communicated and are communicated with a condensate inlet of the biochemical fermentation device through a condensate pipeline.

Further, biochemical fermentation device includes biochemical storehouse and waste heat recovery device, biochemical storehouse is including the storehouse body, the air-supply line, the blast pipe, waste heat recovery device includes that the evaporimeter trades the hot side and the condenser trades the hot side and links to each other, the blast pipe trades the hot side with the condenser and links to each other, the lower part of the storehouse body is the arc, the arc part of the storehouse body is equipped with the condensate water jacket, the condensate water presss from both sides and is equipped with biochemical storehouse comdenstion water entry and biochemical storehouse comdenstion water export on the jacket, wherein, biochemical storehouse comdenstion water entry passes through the condensate water pipeline and links to each other with dry dewatering device's condensate water pump, in order to receive the comdenstion water that comes from in the dry dewatering device.

Further, the biochemical fermentation device further comprises a gas collection box assembly and a fine filtering device which are arranged outside the wall plate of the bin body, wherein the wall plate is provided with an exhaust hole communicated with the gas collection box assembly, an exhaust pipe is formed on the gas collection box assembly and is connected with the fine filtering device so as to discharge waste gas in the bin body into the waste heat recovery device through the fine filtering device, and the fine filtering device utilizes a multi-stage filter to filter and remove dust of the waste gas.

Further, rubbish temporary storage device includes the casing and sets up the interior coil pipe in the casing, is formed with feed inlet and discharge gate on the casing, and condensate water pipeline and biochemical storehouse comdenstion water export intercommunication are passed through to the one end of interior coil pipe, and the other end is used for linking to each other with effluent disposal system.

Furthermore, the distributed kitchen waste biochemical treatment system further comprises a wastewater treatment system, wherein the wastewater treatment system comprises an oil separating groove and a biological treatment groove, the oil separating groove is connected with a water outlet of the inner coil pipe to receive condensed water in the inner coil pipe, floating oil separated by the oil separating groove is discharged into the drying and dewatering device to be treated, and wastewater in the oil separating groove is discharged into the biological groove to be subjected to biochemical treatment so as to meet the discharge standard of the wastewater.

Further, distributing type kitchen garbage biochemical treatment system still includes exhaust treatment system, and exhaust treatment system includes washing unit, photodissociation unit and active carbon adsorption unit, and biochemical fermentation device exhaust waste gas passes through washing unit, photodissociation unit and active carbon adsorption unit in proper order to satisfy the emission requirement of waste gas.

Further, each device of the garbage temporary storage device, the drying and dehydrating device, the biochemical fermentation device, the wastewater treatment system and the waste gas treatment system is constructed in a prying block mode.

Further, the vacuum dryer is selected from one of a vacuum disc type dryer, a vacuum paddle type dryer or a vacuum rake type dryer, and the steam compressor is a roots compressor or a piston compressor.

The utility model discloses a distributed kitchen garbage biochemical treatment system has the following advantage in several respects:

1) the distributed kitchen waste biochemical treatment system realizes the drying and dehydration of the kitchen waste by the steam recompression technology, on one hand, the evaporated moisture is very clean, and the burden of wastewater treatment is greatly reduced; on the other hand, the drying and dehydration realize the control of the discharged water content of the kitchen waste, the material water entering the biochemical bin is correspondingly reduced, and the material water content is mixed with the material with high water content after biochemical degradation, so that the kitchen waste in the biochemical bin can be always maintained at the ideal water content for biochemical treatment, and the biochemical treatment of the kitchen waste is facilitated;

2) the distributed kitchen waste biochemical treatment system of the utility model can effectively ensure the treatment effect of biochemical fermentation by fermenting the kitchen waste after drying and dewatering through the biochemical fermentation device, so that the kitchen waste fermented by the biochemical fermentation device can effectively avoid generating harmful substances such as viruses, pathogenic bacteria and pathogenic microorganisms, and the like, thereby effectively meeting the emission requirement of the kitchen waste;

3) the utility model discloses a comdenstion water that distributed kitchen garbage biochemical treatment system's steam recompression technique produced can also pass through the condensate water pipeline and discharge behind biochemical fermentation device and the rubbish temporary storage device in proper order to realize the waste heat recovery of comdenstion water, very big saving the energy consumption, avoid causing the waste of heat energy;

4) the distributed kitchen waste biochemical treatment system of the utility model has the advantages that each device is in a prying block form. Therefore, on one hand, the prying block form can meet various requirements of customers; on the other hand, can make the utility model discloses a distributed kitchen garbage biochemical treatment system's entire system equipment is compact, practice thrift the construction that takes up an area of, reduce the scene.

Drawings

Fig. 1 is a system flow chart of a distributed kitchen waste biochemical treatment system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a drying and dewatering device according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a biochemical fermentation apparatus according to an embodiment of the present invention;

FIG. 4 is a view in the A-A direction of the biochemical fermentation device shown in FIG. 3;

FIG. 5 is a schematic view of the exhaust pipe shown in FIG. 3;

FIG. 6 is a schematic structural view of a biological treatment tank according to an embodiment of the present invention.

Detailed Description

For better understanding, the purpose, structure and function of the present invention are described in detail below with reference to the accompanying drawings.

Fig. 1 shows a system flow chart of a distributed kitchen waste biochemical treatment system 100 according to an embodiment of the present invention. As shown in fig. 1, this distributing type kitchen garbage biochemical treatment system 100 is including being used for carrying out the refuse treatment system of preliminary treatment and aerobic fermentation to kitchen garbage, refuse treatment system is including consecutive rubbish temporary storage device, dry dewatering device and biochemical fermenting installation, rubbish temporary storage device is used for keeping in kitchen garbage, dry dewatering device sets to can carry out dry dehydration to the default through steam recompression technique to kitchen garbage, biochemical fermenting installation is used for carrying out aerobic biochemical fermentation with kitchen garbage and handles and discharge to outside. Wherein, distributing type kitchen garbage biochemical treatment system 100 is still including the condensate water pipeline that communicates dry dewatering device, biochemical fermentation device and rubbish temporary storage device in proper order to make the condensate water that produces in the dry dewatering device discharge after can passing through biochemical fermentation device and rubbish temporary storage device in proper order again, with the waste heat recovery who realizes the condensate water.

The utility model discloses distributed kitchen garbage biochemical treatment system 100 includes three system of refuse treatment system, effluent disposal system and exhaust-gas treatment system, and the refuse treatment system includes two units of rubbish preliminary treatment and rubbish biochemical treatment to carry out innoxious, minimizing and resourceful treatment with rubbish. The utility model discloses distributed kitchen garbage biochemical treatment system 100 carries out the preliminary treatment to kitchen garbage through the refuse handling system when using, specifically includes that the raw materials promotes weighing, letter sorting, rubbish is broken and rubbish is kept in. The kitchen waste is lifted to the sorting platform by the aid of the waste lifting machine, the weighing module is mounted on the waste lifting machine, and the kitchen waste is weighed and uploaded to the control system of the distributed kitchen waste biochemical treatment system 100 while being lifted. The sorting is that manual work or machinery is utilized at the letter sorting bench, sorts the inorganic matter kitchen garbage that can not biodegradable, and the kitchen garbage after the letter sorting gets into the rubbish breaker and carries out the breakage, and the shearing breaker can be selected for use in the breakage, and broken particle diameter can be less than 10mm, and its broken purpose makes kitchen garbage carry out drying dehydration and biodegradable more easily. The crushed materials enter a temporary garbage storage device for storage.

The whole treatment is the treatment of the kitchen waste before drying and dehydration, and the waste can be treated to be relatively uniform slurry through the pretreatment. The kitchen waste after pretreatment is dried and dehydrated through the drying and dehydrating device, the drying and dehydrating device is set to achieve drying and dehydrating of the kitchen waste through a vapor recompression technology (MVR process), so that each batch of kitchen waste can be reasonably designed through the drying and dehydrating device and set certain running time to achieve a preset value in a drying and dehydrating mode, the preset value can be set to be 50-60% of the moisture content of each batch of kitchen waste, and the requirement for the optimal moisture content of aerobic biological treatment can be met. Simultaneously, the comdenstion water that steam recompression technique produced can also discharge again through condensate water pipeline behind biochemical fermentation device and the rubbish temporary storage in proper order to realize the waste heat recovery of comdenstion water.

Through the setting, the utility model discloses distributed kitchen garbage biochemical treatment system 100 has the following advantage in several respects:

1) the distributed kitchen waste biochemical treatment system 100 provided by the embodiment of the utility model realizes the drying and dehydration of kitchen waste by the vapor recompression technology (MVR process), can reach the optimal moisture content requirement of aerobic biological treatment, and simultaneously, condensed water generated by the vapor recompression technology can be discharged through a condensed water pipeline after sequentially passing through a biochemical fermentation device and a waste temporary storage device, so as to realize the waste heat recovery of the condensed water, greatly save energy consumption and avoid the waste of heat energy;

2) the utility model discloses distributed kitchen garbage biochemical treatment system 100, kitchen garbage after the dry dehydration again through biochemical fermentation device fermentation treatment can be effective the biochemical fermentation's of assurance treatment effect for kitchen garbage after biochemical fermentation device fermentation treatment can avoid producing harmful substance such as virus, pathogenic bacteria and pathogenic microorganism effectively, thereby makes kitchen garbage can satisfy its emission requirement effectively.

Fig. 2 shows a schematic structural diagram of a drying and dewatering device 10 according to an embodiment of the present invention. As shown in fig. 2, the drying and dewatering device 10 may include a vacuum dryer 1, the vacuum dryer 1 may include a sealed housing 12 having a steam jacket 11, a first gas-liquid separator 13, and a steam compressor 14, the sealed housing 12 may be formed with a feed inlet 121, a discharge outlet 122, a dryer condensed water return port 123, and a steam outlet 124, and the steam jacket 11 may be formed with a steam inlet 111 and a dryer condensed water outlet 112. Wherein, the steam outlet 124, the gas inlet of the first gas-liquid separator 13, the steam compressor 14 and the steam inlet 111 are connected in sequence, the liquid outlet of the first gas-liquid separator 13 is connected with the condensed water return port 123 of the dryer, and the condensed water outlet 112 of the dryer is connected with the condensed water inlet of the biochemical fermentation device 20 (shown in fig. 3) through a condensed water pipeline.

According to the utility model discloses dry dewatering device 10 is when using, kitchen garbage is in sealed casing 12 by feed inlet 121 entering vacuum dryer 1 in turn, under the condition of vapor compressor 14 continuous operation, take out for the negative pressure (about-40 kpa about) in the sealed casing 12, under this negative pressure, the boiling point temperature of the water on the kitchen garbage changes to about 85 ℃, heat rubbish through heating device (not shown in the figure), so that moisture in it is by the flash distillation for steam when reaching this temperature, steam discharges into first vapour and liquid separator 13 through steam outlet 124, discharge into steam inlet 111 after the intensification of a large amount of steam is compressed under vapor compressor 14's effect, heat kitchen garbage in order to get into steam jacket 11, make the moisture in the kitchen garbage evaporate when reaching the boiling point temperature, thereby realize continuous cycle. The steam in the steam jacket 11 after heat exchange is liquefied into condensed water, and the condensed water is discharged from a dryer condensed water outlet 112 to a condensed water inlet of the biochemical fermentation device 20 through a condensed water pipeline.

Through the setting, the utility model discloses dry dewatering device 10 can make kitchen garbage through evaporation drying in succession after, the moisture content reduces gradually to the accessible calculates the weight change of the definite drying time or the whole equipment of confirming (need to install weighing module) and judges dry back material moisture content, arranges the material to the biochemical fermentation device 20 in through discharge gate 122 when reaching the required moisture content of biochemical treatment (50 ~ 60%). Because the utility model discloses dry dewatering device 10 has adopted the mode of vapor compression heating to carry out rubbish drying for in whole kitchen garbage's the dry dehydration process, only need use heating device and start steam compressor 14 time power consumption when initial, need not external steam and other energy sources in addition, thereby make the utility model discloses dry dewatering device 10 can utilize original dumped steam effectively, thereby recoverable latent heat, the increasing heat efficiency. Furthermore, the utility model discloses dry dewatering device 10 is still through the steam liquefaction in the steam jacket 11 after with the heat transfer for the comdenstion water by desiccator comdenstion water export 112 discharge to biochemical fermentation device 20 in, has realized the waste heat recovery of comdenstion water, very big saving the energy consumption, avoid causing the waste of heat energy.

Through statistics, the utility model discloses dry dewatering device 10 evaporates a ton water and foresees to synthesize the power consumption and be 120 ~ 150kwh, is about 20% of direct electrical heating to make the utility model discloses dry dewatering device 10's energy-conserving effect is obvious.

Preferably, as shown in fig. 2, the drying and dehydrating device 10 may further include a second gas-liquid separator 15 and a condensate pump 16, and the dryer condensate outlet 112, the second gas-liquid separator 15, and the condensate pump 16 are sequentially communicated and communicated with the condensate inlet of the biochemical fermentation device 20 through a condensate water pipeline.

Preferably, the vacuum dryer 1 may be selected from one of a vacuum disc type, a vacuum paddle type or a vacuum rake type dryer. The vapor compressor 14 may be a roots compressor or a piston compressor.

Fig. 3 shows a schematic structural diagram of a biochemical fermentation apparatus 20 according to an embodiment of the present invention. As shown in fig. 3, the biochemical fermentation device 20 may include a biochemical chamber 2 and a waste heat recovery device 3, the biochemical chamber 2 may include a chamber body 21, an air inlet pipe 22 and an exhaust pipe 23, the waste heat recovery device 3 includes an evaporator heat exchange side and a condenser heat exchange side, the air inlet pipe 22 is connected to the condenser heat exchange side, the exhaust pipe 23 is connected to the evaporator heat exchange side, as shown in fig. 4, the lower portion of the chamber body 21 is arc-shaped, the arc-shaped portion of the chamber body 21 is provided with a condensed water jacket 24, and the condensed water jacket 24 is provided with a biochemical chamber condensed water inlet 241 and a biochemical chamber condensed water outlet 242. Wherein, the biochemical bin condensed water inlet 241 is connected with the condensed water pump 16 of the drying and dehydrating device 10 through a condensed water pipeline to receive the condensed water from the drying and dehydrating device 10.

According to the utility model discloses biochemical fermentation device 20 is equipped with the comdenstion water at the arc part of the storehouse body 21 and presss from both sides the cover 24 to link to each other its condensate water pump 16 with dry dewatering device 10, like this, combine the above can know, the steam liquefaction's in the steam jacket 11 after the heat transfer comdenstion water can discharge to biochemical fermentation device 20's comdenstion water through dry dewatering device 10 and press from both sides the cover 24 in, thereby can realize the waste heat recovery of comdenstion water effectively. In addition, the working temperature of biochemical treatment is generally 50-60 ℃, so that when the biochemical fermentation device is used for performing biochemical treatment on the kitchen waste, the working temperature of biochemical treatment can be effectively maintained, and viruses, pathogenic bacteria and pathogenic microorganisms which are possibly generated during the storage period of the kitchen waste can be killed better. The waste heat recovery device 3 in this embodiment adopts a heat pump technology, and can convert low-grade heat sources in the exhaust gas into high-grade heat sources to be used for heating the biochemical fermentation device 20, so that the heat of the exhaust gas can be efficiently recovered, and the effects of energy conservation and emission reduction can be achieved.

Preferably, as shown in fig. 3, the waste heat recovery device 3 may include a heat pump circulation system connected by a compressor 31, a condenser 32, a throttle valve 33, and an evaporator 34 through pipes. The waste gas generated by the biochemical fermentation device 20 is introduced into the heat pump circulating system, and is discharged after heat exchange. According to the utility model discloses a, waste heat recovery device 3 is when using, and the inside heat pump working medium that is equipped with of heat pump cycle system, and the high temperature waste gas that biochemical fermentation device 20 produced carries out the heat transfer cooling back at the evaporimeter heat transfer side of evaporimeter 34 and falls into waste gas circuit and condensation water route through vapour and liquid separator. One path of the waste gas path forms a circulating air entering a condenser heat exchange side of the condenser 32, and the other path of the waste gas path is discharged into a waste gas treatment system. The condensate water path is discharged into a wastewater treatment system. The temperature of the waste gas after heat exchange can reach 25 ℃. The heat pump working medium is subjected to heat exchange, is subjected to isobaric evaporation and heat absorption in the evaporator 34, is changed into a gaseous state, and enters the compressor 31 for isentropic compression to obtain high-temperature and high-pressure superheated gas. Then, the working medium of the heat pump is subjected to isobaric condensation and heat release in the condenser 32, the heat is transferred to circulating air, and the circulating air enters the biochemical bin 2 to heat the kitchen waste after the heat exchange is carried out and the temperature of the circulating air can reach more than 60 ℃. The heat pump working medium which emits heat is changed into high-pressure medium-temperature saturated liquid, then the saturated liquid is throttled by the throttle valve 33 to be changed into a mixture of low-temperature low-pressure saturated gas and saturated liquid, and then the saturated liquid enters the evaporator 34 to absorb heat, and the heat recovery purpose is achieved by repeated circulation. Because the strain in the biochemical bin 2 needs to consume certain oxygen for biochemistry, in order to ensure that certain oxygen is supplied in the biochemical bin, a small amount of inlet air is always supplied to the waste heat recovery device 3, and the rest air is circularly dried for use.

Preferably, as shown in fig. 3, the biochemical bin 2 may further include a stirring assembly 25 disposed in the bin body 21, the stirring assembly 25 including a stirrer 251, a stirring shaft 252, and a driving device 253. The stirrer 251 includes a stirring paddle 251a mounted on the stirring shaft 252, a blade 251b is mounted at one end of the stirring paddle 251a, and a driving device 253 connected to the stirring shaft 252 to drive the stirring shaft 252 to rotate. Wherein the adjacent paddles 251a are configured to be arranged to intersect vertically. Through this setting, can make stirring rake 251a stir the kitchen garbage form alternative in biochemical storehouse 2 to make kitchen garbage's biochemical fermentation treatment's effect better.

Still preferably, as shown in fig. 3, the biochemical fermentation device 20 may further include a gas collection tank assembly 26 and a fine filtration device 4 which are disposed outside the wall plate of the bin body 21, the wall plate is provided with an exhaust hole communicated with the gas collection tank assembly 26, the gas collection tank assembly 26 is provided with an exhaust pipe 23, and the exhaust pipe 23 is connected with the fine filtration device 4 so as to exhaust the exhaust gas in the bin body 21 into the waste heat recovery device 3 through the fine filtration device 4. Wherein, the fine filtering device 4 utilizes a multi-stage filter to filter and remove dust from the waste gas. Through this setting, can filter the dust removal to the exhaust waste gas of arranging effectively.

Further preferably, as shown in fig. 3, the fine filtering device 4 may include a three-stage filter 41 and a fan 42 to prevent impurities in the gas from blocking the waste heat recovery device 3, and also to prevent the finally discharged exhaust gas from exceeding the particulate content. Wherein, the filter 41 can be a basket filter, and the filter 41 is provided with filter screens therein, and the filtering precision of each stage can be set to be different, that is, the number of the filter screens from the first stage to the last stage is gradually increased, so that the precision of the filter 41 is gradually increased accordingly. In addition, a differential pressure gauge 43 with a remote transmission function is arranged before and after each stage of filter 41, and when the differential pressure is higher than a set value, the filter 41 is blocked and needs to be cleaned.

Preferably, the biochemical fermentation device 20 may further include a temperature detector 27, a humidity detector 28 and an oxygen concentration monitor 29 disposed in the bin body 21. The temperature detector 27 and the humidity detector 28 are respectively used for monitoring the temperature and the humidity in the bin body 21, and the oxygen concentration monitor 29 is used for monitoring the oxygen content in the bin body 21 so as to adjust the intake air according to the oxygen content value corresponding to the decomposition condition of the kitchen waste.

Preferably, as shown in fig. 4, the air inlet pipe 22 can be configured as a pipe for supplying air into the bin body 21, and is formed with an air inlet 221 and an air inlet slot, the air inlet pipe 22 branches after entering the bin body 21 and is connected to a horizontal pipe 222, and the horizontal pipe 222 is opened with an air inlet slot.

Preferably, as shown in fig. 3 and 5, the header tank assembly 26 may include: the combination installation is at filter screen 261 and the gas collection box 262 outside the relative wallboard of feed inlet 201 of storehouse body 21, and the exhaust hole constructs the square hole of corresponding size that is linked together with gas collection box 262, is equipped with blast pipe 23 above the gas collection box 262, through corresponding closed installation with the waste gas in the storehouse body 21 through filter screen 261 filtration back discharge outside through blast pipe 23, this filter screen 261 is coarse filtration, and the trompil aperture is 2 ~ 3 mm. It is also preferred that the filter mesh 261 be removable to facilitate cleaning thereof. The exhaust pipes 23 are branched outside the bin and are also connected to the gas collection tank 262. Wherein 202 in fig. 3 is a discharge port of the biochemical fermentation device 20.

In a preferred embodiment, the temporary garbage storage device may include a housing (not shown) and an inner coil (not shown) disposed inside the housing, wherein the housing is formed with a feeding port and a discharging port, one end of the inner coil is connected to the condensed water outlet 242 of the biochemical bin through a condensed water pipeline, and the other end is used for connecting to a wastewater treatment system. Through this setting, the comdenstion water in the comdenstion water jacket 24 of biochemical fermentation device 20 can enter into rubbish temporary storage device through interior coil pipe to rubbish to keeping in the rubbish temporary storage device realizes preheating, thereby further realizes waste heat utilization, simultaneously, this setting can also reduce the purpose of discharging to the temperature of the waste water in the effluent disposal system, thereby more does benefit to the follow-up processing to waste water.

Returning to fig. 1, preferably, the distributed kitchen garbage biochemical treatment system 100 may further include a wastewater treatment system, and the wastewater treatment system may include an oil separation tank and a biological treatment tank. Wherein, the oil separating groove links to each other with the delivery port of inner coil pipe to the comdenstion water in the receiving inner coil pipe, the oil slick that the comdenstion water separates through the oil separating groove discharges and handles in drying and dehydrating device 10, and the waste water in the oil separating groove discharges and carries out biochemical treatment in going into biological treatment groove, in order to satisfy the emission standard of waste water. In particular, in combination with the above, it can be seen that the wastewater treated by the wastewater treatment system according to the present invention is the condensate water produced by the garbage pretreatment. The condensed water cooled in the condensed water jacket 24 of the biochemical bin 2 and the inner coil pipe of the garbage temporary storage device is discharged into an oil separating tank, and at the moment, the temperature of the condensed water can be reduced to 30-40 ℃ from about 90 ℃. The waste water is generated by evaporation and is very clean, the Chemical Oxygen Demand (COD) is usually below 5000mg/L, no solid particles exist, and only a trace amount of oil exists, so the waste water is easier to treat. The wastewater enters a biological treatment tank, and the COD in the wastewater is further reduced by utilizing a biological rotating disc treatment technology of high-efficiency filler and bottom aeration, so that the wastewater finally meets the aim of standard discharge.

Fig. 6 shows a schematic structural view of a biological treatment tank 50 according to an embodiment of the present invention. As shown in FIG. 6, the biological treatment tank 50 may comprise a biological tank 51, a biological rotating disk 52, and a rotating disk motor 53. The biological tank 51 is provided with a water inlet 511 and a water outlet 512. Referring to fig. 6, the biological rotating disk 52 is installed on the upper part of the biological tank 51 and can be driven by the rotating disk motor 53 to rotate back and forth at a slow speed, the disk axis of the biological rotating disk 52 is higher than the water surface, and the disk surface of the biological rotating disk 52 is about 40% immersed in the water and about 60% exposed in the air, and the rotating disk of the biological rotating disk 52 is filled with filler. Wastewater enters through the water inlet 511, the disc shaft is driven by the rotary disc motor 53 to rotate, and the disc surface of the biological rotary disc 52 is alternately contacted with the wastewater and air. The disc surface and the filler of the biological rotating disc 52 are covered by a film-shaped object formed by the growth of microorganisms, and the biological film is alternately and fully contacted with the wastewater and the air to continuously obtain pollutants and oxygen, thereby realizing the function of purifying the wastewater. Shear stress is generated between the membrane and the disk surface due to rotation, the weight is increased along with the increase of the thickness of the membrane, and after the weight is increased to a certain degree, the membrane falls off from the disk surface and flows away with water.

Returning to fig. 1, preferably, the distributed kitchen garbage biochemical treatment system 100 may further include a waste gas treatment system, the waste gas treatment system may include a water washing unit, a photolysis unit and an activated carbon adsorption unit, and waste gas discharged from the biochemical fermentation device 20 sequentially passes through the water washing unit, the photolysis unit and the activated carbon adsorption unit to meet the emission requirement of the waste gas. The gas treatment is to purify and deodorize the gas by utilizing the technologies of water washing, UV photolysis and active carbon adsorption, thereby achieving the purpose of standard emission.

According to the utility model discloses a waste gas that exhaust treatment system received uses air and vapor to be given first place to, contains certain foul smell component, uses the ammonia to give first place to usually, secondly has trace carbon disulfide, if stirring ventilation is unsatisfactory, forms anaerobic environment and probably produces hydrogen sulfide, probably has other trace foul smell components except that above-mentioned gas component. Ammonia is a gas that is very soluble in water, and hydrogen sulfide is a gas that is soluble in water. The utility model discloses exhaust treatment system adopts the mode of "washing + UV photodissociation + active carbon adsorption" to deodorize, the washing goes on in the washing tower, it can detach most ammonia and partial hydrogen sulfide, the ammonia that does not detach, hydrogen sulfide, carbon disulfide and other components get into UV photodissociation equipment, UV photodissociation equipment is equipped with the UV fluorescent tube, the UV fluorescent tube can release high energy UV ultraviolet ray beam, this beam can be with the chemical bond fracture of waste gas component on the one hand, make it form the atom or the group of free state, on the other hand can be with the oxygen schizolysis in the waste gas, then the combination produces ozone, ozone participates in the reaction, make the foul smell component finally cracked and oxidized simple stable compound. The waste gas may still contain trace amount of odor components after passing through the UV photolysis equipment, and finally the waste gas is subjected to activated carbon adsorption treatment, and activated carbon is filled in the activated carbon box, so that the residual odor components can be adsorbed by means of the strong specific surface area of the activated carbon. After the treatment, the waste gas can reach the aim of standard emission.

In a preferred embodiment, each module of the temporary garbage storage, the drying and dehydrating device 10, the biochemical fermentation device 20, the wastewater treatment system and the waste gas treatment system may be constructed in the form of a skid. It should be noted that the form of the pry block can be understood as a series of customizations from design to production installation as requested by the user. Through the arrangement, on one hand, the prying block form can meet various requirements of customers; on the other hand, can make the utility model discloses distributed kitchen garbage biochemical treatment system 100's the whole system equipment compactness, practice thrift the construction that takes up an area of, reduce the scene. For example, the temporary garbage storage device, the drying and dehydrating device 10, and the biochemical fermentation device 20 of the garbage disposal system can be individually assembled in a factory in the form of a skid. All facilities needed by the processes of equipment, pipelines, electricity, instruments and the like can be arranged in the prying block, the interior of the system does not need to be installed on site, and the inlet and outlet pipelines and cables are installed only after the equipment is in place.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. The utility model provides a distributing type kitchen garbage biochemical treatment system, its characterized in that, including the refuse treatment system who is used for carrying out preliminary treatment and aerobic fermentation to kitchen garbage, refuse treatment system is including consecutive rubbish temporary storage device, dry dewatering device and biochemical fermenting installation, rubbish temporary storage device is used for keeping in kitchen garbage, dry dewatering device sets up and carries out dry dehydration to the default through steam recompression technique to kitchen garbage, biochemical fermenting installation is used for carrying out the biochemical fermentation of kitchen garbage and discharges to outside, wherein, distributing type kitchen garbage biochemical treatment system is still including communicating in proper order dry dewatering device biochemical fermenting installation and the condensate water pipeline of rubbish temporary storage device to make the comdenstion water that produces in the dry dewatering device can pass through in proper order biochemical fermenting installation with discharge again behind the rubbish temporary storage device, so as to realize the waste heat recovery of the condensed water.

2. The distributed kitchen waste biochemical treatment system according to claim 1, wherein the drying and dehydrating device comprises a vacuum dryer, the vacuum dryer comprises a sealed housing with a steam jacket, a first gas-liquid separator and a steam compressor, a feed inlet, a discharge outlet, a dryer condensate water return port and a steam outlet are formed on the sealed housing, a steam inlet and a dryer condensate water outlet are formed on the steam jacket, wherein the steam outlet, a gas inlet of the first gas-liquid separator, the steam compressor and the steam inlet are sequentially connected, a liquid outlet of the first gas-liquid separator is connected with the dryer condensate water return port, and the dryer condensate water outlet is connected with a condensate water inlet of the biochemical fermentation device through the condensate water pipeline.

3. The distributed kitchen waste biochemical treatment system according to claim 2, wherein the drying and dehydrating device further comprises a second gas-liquid separator and a condensate pump, and the dryer condensate outlet, the second gas-liquid separator and the condensate pump are sequentially communicated and communicated with a condensate inlet of the biochemical fermentation device through the condensate pipeline.

4. The distributed biochemical treatment system for kitchen waste according to claim 3, wherein the biochemical fermentation device comprises a biochemical bin and a waste heat recovery device, the biochemical bin comprises a bin body, an air inlet pipe and an exhaust pipe, the waste heat recovery device comprises an evaporator heat exchange side and a condenser heat exchange side, the air inlet pipe is connected with the condenser heat exchange side, the exhaust pipe is connected with the evaporator heat exchange side, the lower part of the bin body is arc-shaped, a condensed water jacket is arranged on the arc-shaped part of the bin body, a biochemical bin condensed water inlet and a biochemical bin condensed water outlet are arranged on the condensed water jacket, and the biochemical bin condensed water inlet is connected with a condensed water pump of the drying and dewatering device through the condensed water pipeline so as to receive condensed water from the drying and dewatering device.

5. The distributed biochemical treatment system for kitchen waste according to claim 4, wherein the biochemical fermentation device further comprises a gas collection tank assembly and a fine filtration device, the gas collection tank assembly and the fine filtration device are arranged outside a wall plate of the bin body, the wall plate is provided with an exhaust hole communicated with the gas collection tank assembly, an exhaust pipe is formed on the gas collection tank assembly and connected with the fine filtration device so as to discharge waste gas in the bin body into the waste heat recovery device through the fine filtration device, and the fine filtration device utilizes a multi-stage filter to filter and remove dust from the waste gas.

6. The distributed biochemical treatment system for the kitchen waste according to claim 4, wherein the temporary garbage storage device comprises a shell and an inner coil pipe arranged in the shell, a feeding hole and a discharging hole are formed in the shell, one end of the inner coil pipe is communicated with a condensed water outlet of the biochemical bin through a condensed water pipeline, and the other end of the inner coil pipe is connected with a wastewater treatment system.

7. The distributed kitchen waste biochemical treatment system according to claim 6, further comprising a wastewater treatment system, wherein the wastewater treatment system comprises an oil separating tank and a biological treatment tank, wherein the oil separating tank is connected with a water outlet of the inner coil pipe to receive condensed water in the inner coil pipe, floating oil separated by the oil separating tank is discharged into the drying and dewatering device for treatment, and wastewater in the oil separating tank is discharged into the biological tank for biochemical treatment to meet the wastewater discharge standard.

8. The distributed kitchen waste biochemical treatment system according to claim 7, characterized in that, the distributed kitchen waste biochemical treatment system further includes a waste gas treatment system, the waste gas treatment system includes a water washing unit, a photolysis unit and an active carbon adsorption unit, the waste gas discharged by the biochemical fermentation device passes through the water washing unit, the photolysis unit and the active carbon adsorption unit in sequence to satisfy the emission requirement of the waste gas.

9. The distributed biochemical treatment system for kitchen waste according to claim 8, wherein each of the temporary waste storage device, the drying and dehydrating device, the biochemical fermentation device, the wastewater treatment system and the waste gas treatment system is constructed in a form of a skid.

10. The distributed kitchen waste biochemical treatment system according to any one of claims 2 to 9, wherein the vacuum dryer is one selected from a vacuum disc type, a vacuum paddle type or a vacuum rake type dryer, and the vapor compressor is a roots compressor or a piston compressor.

Images