CN214400001U - System for comprehensive treatment of household garbage and domestic sewage - Google Patents

Abstract

The utility model provides a system for comprehensively treating domestic garbage and domestic sewage, wherein a garbage sorting device, a garbage crushing device and a solid-liquid separation device are communicated in sequence; the solid-liquid separation device is simultaneously communicated with the mixed fuel boiler and the input end of the grease separation device; the sedimentation tank is respectively communicated with the input ends of the anaerobic fermentation device and the oil separation device; the outlet end of the grease separation device is sequentially communicated with the water storage device, the purification device and the mixed fuel boiler; the steam outlet of the mixed fuel boiler is connected with a high-pressure steam turbine generator, and the flue gas outlet is communicated with a waste heat steam boiler; the flue gas outlet of the high-pressure steam turbine generator is communicated with the input end of the waste heat steam boiler; waste heat steam boiler's input still communicates purifier, and exhanst gas outlet intercommunication anaerobic fermentation device, low pressure turbo generator in steam outlet intercommunication, this utility model can carry out effectual integrated treatment to domestic waste and domestic sewage, and the marsh gas calorific value high-usage practices thrift the cost, practices thrift the water source, furthest's improvement resourceization comprehensive utilization efficiency.

Description

System for comprehensive treatment of household garbage and domestic sewage

Technical Field

The utility model relates to an environmental protection technology field especially relates to a system for domestic waste and domestic sewage integrated processing.

Background

With the rapid development of economy, the living standard and the living quality of people are greatly improved, so that the generated domestic garbage and domestic sewage are increased day by day, and the requirements of garbage treatment and sewage treatment are continuously improved.

In the prior art, the treatment of the domestic garbage and the domestic sewage is in a separated mode, which is not beneficial to saving land and controlling cost and is not beneficial to the comprehensive utilization of energy.

The household garbage is solid waste generated in daily life of residents or activities for providing services for daily life, and is one of main components of the solid waste. The components of the composite mainly comprise kitchen wastes, waste paper, waste plastics, waste fabrics, waste metals, waste glass ceramic fragments, excrement, waste furniture and the like. At present, two modes of landfill and incineration power generation are mainly adopted for garbage treatment in China. At present, the garbage disposal is relatively lagged, the proportion of the landfill disposal exceeds 85 percent, and the garbage incineration power generation can greatly reduce the landfill, save a large amount of land resources and simultaneously reduce the atmospheric pollution of the landfill to underground water and the surrounding environment of a landfill site. The combustion improver is added according to the waste heat value during the common waste incineration, so that the waste incineration operation cost is greatly increased.

In recent years, the discharge amount of industrial wastewater in China is reduced year by year, the discharge amount of domestic sewage in cities and towns is increased year by year, the traditional sewage treatment technology has more serious problems, such as insufficient capital, high cost, low efficiency, low comprehensive utilization degree of resources and the like, common sewage treatment and sludge treatment are separately carried out, sewage is directly used as greening water for discharge after being treated, the utilization degree of purified water is not high, sludge after being treated can be subjected to anaerobic fermentation treatment to generate biogas, the biogas has the characteristics of efficiency creation, energy saving, safety, environmental protection and the like, is a distributed energy source with wide distribution and low price, but the biogas has low heat value utilization rate when being used, and is easy to cause heat waste.

Therefore, the system for comprehensively treating the domestic garbage and the domestic sewage is urgently needed to be invented, the domestic garbage and the domestic sewage can be effectively comprehensively treated, the land resource can be saved, the treatment cost can be reduced, the resource waste can be reduced, the utilization rate of the methane heat value can be improved, and the comprehensive utilization degree of the resource can be furthest improved.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a system for domestic waste and domestic sewage integrated processing to solve above-mentioned technical problem.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a system for domestic waste and domestic sewage integrated treatment, includes rubbish sorting device, rubbish reducing mechanism, solid-liquid separation equipment, sedimentation tank, grease separator, water storage device, purifier, anaerobic fermentation device, sediment liquid separator, hybrid fuel boiler, high pressure turbo generator, exhaust-heat steam boiler and well low pressure turbo generator:

the garbage sorting device, the garbage crushing device and the solid-liquid separation device are communicated in sequence; the outlet end of the solid-liquid separation device is simultaneously communicated with the mixed fuel boiler and the input ends of the grease separation device; the outlet end of the sedimentation tank is respectively communicated with the input ends of the anaerobic fermentation device and the oil separation device; the gas outlet end of the anaerobic fermentation device is communicated with the mixed fuel boiler, a slag-liquid outlet is communicated with the slag-liquid separation device, the slag-liquid separation device is also communicated with the water storage device, and the outlet end of the grease separation device is sequentially communicated with the water storage device, the purification device and the mixed fuel boiler; the steam outlet of the mixed fuel boiler is communicated with the high-pressure steam turbine generator, and the flue gas outlet is communicated with the waste heat steam boiler; the high-pressure steam turbine generator is communicated with the waste heat steam boiler; the waste heat steam boiler is also communicated with the purification device, the anaerobic fermentation device and the medium and low pressure steam turbine generator, the medium and low pressure steam turbine generator is communicated with a cooling tower, and the cooling tower is connected with the water purification tank.

The mixed fuel boiler comprises a first cavity, a second cavity, a third cavity and a fourth cavity, wherein the first cavity, the second cavity and the third cavity are sequentially arranged from top to bottom, the fourth cavity is annularly enclosed outside the second cavity, a water tank is arranged inside the first cavity, the lower part of the water tank is communicated with the fourth cavity through a pipeline, the upper part of the water tank penetrates through the top of the first cavity and is provided with a steam outlet, the steam outlet is communicated with the high-pressure turbine generator, the upper part of the first cavity is provided with a flue gas outlet, the flue gas outlet is communicated with the exhaust-heat steam boiler, the fourth cavity is provided with a water inlet, the water inlet is communicated with the purifying device, the second cavity penetrates through the fourth cavity and is obliquely and downwards provided with a feed inlet, the feed inlet is communicated with the solid-liquid separating device, and the lower part of the third cavity is provided with a vent hole, the vent hole is communicated with the anaerobic fermentation device, a combustor is arranged in the third accommodating cavity, and a discharge hole is formed in the bottom of the third accommodating cavity.

The domestic garbage is rich in combustible materials, the domestic sewage is treated by the garbage sorting device, the garbage crushing device and the solid-liquid separation device, the separated solid garbage is put into the mixed fuel boiler for combustion, the domestic sewage is rich in organic materials, the domestic sewage is introduced into the sedimentation tank to enable cement to be clarified and separate out sewage and sludge, the sewage is purified by the grease separation device, the water storage device and the purification device and then introduced into the mixed fuel boiler for heating to generate steam, the generated steam is introduced into the high-pressure steam turbine generator for acting to generate electric energy, and the sludge rich in organic materials is fermented by the anaerobic fermentation device to generate methane which is introduced into the mixed fuel boiler for mixed combustion with the solid garbage to provide heat energy; the flue gas with heat discharged by the mixed fuel boiler and the high-pressure steam turbine generator is introduced into the waste heat steam boiler to exchange heat with the water introduced by the purification device to generate low-temperature steam, and is introduced into the middle-low pressure steam turbine generator to do work to generate electric energy, and the flue gas after the waste heat steam boiler exchanges heat is discharged;

domestic garbage, domestic sewage and precipitated sludge are effectively treated at the same place, sludge is fermented to obtain marsh gas, the marsh gas is used as a combustion improver for solid garbage combustion, the solid garbage is combusted in a mixed fuel boiler, marsh slag is recycled as a fertilizer, and the treated purified water is used for generating steam, so that the domestic garbage and the domestic sewage are effectively treated, the marsh gas heat value is reasonably utilized, the system is compact in structure, and waste of water resources and heat is avoided.

Furthermore, a first partition plate is arranged between the first containing cavity and the second containing cavity, a second partition plate is arranged between the second containing cavity and the third containing cavity, the first partition plate and the second partition plate are filter plates, and the water tank is fixedly arranged on the first partition plate. The arrangement enables gases such as methane and the like to enter the second containing cavity through the partition plate to serve as combustion improver of solid garbage, smoke and heat generated by combustion can enter the first containing cavity, falling ash in the second containing cavity can enter the third containing cavity and be discharged, and the first partition plate also plays a supporting role in the water tank.

Furthermore, the waste heat steam boiler comprises a water storage cavity, a heating cavity and an exhaust cavity, the water storage cavity, the heating cavity and the exhaust cavity are sequentially arranged from top to bottom, the water storage cavity is communicated with the purification device, the upper part of the water storage cavity is communicated with the medium-low pressure steam turbine generator, and the heating cavity is communicated with the high-pressure steam turbine generator and the mixed fuel boiler; the exhaust cavity is communicated with the heating cavity. The waste heat in the system is fully absorbed by the waste heat steam boiler through the arrangement, the heat value of the system is effectively utilized, and the heat waste is avoided.

Further, the heating intracavity is fixed and is provided with a plurality of heat exchange tubes, the inner tube and the outer tube that the heat exchange tube was established including the cover, the inner tube with set up the intermediate layer between the outer tube, inner tube bottom shutoff, the top with water storage chamber intercommunication, the outer tube top with heating chamber intercommunication, the bottom with exhaust chamber intercommunication. This setting makes the flue gas flow through the intermediate layer and carries out the heat transfer to the water of inner tube, can fully carry out the heat exchange.

Furthermore, a plurality of groups of fins extend radially on the outer tube. Used for improving the heat exchange efficiency.

Further, solid-liquid separation equipment includes hopper, bottom plate, backup pad, waterlogging caused by excessive rainfall board, push rod and fixed plate, the perpendicular bottom plate setting of backup pad encloses out the waterlogging caused by excessive rainfall chamber, the backup pad top is provided with the hopper, the vertical setting of fixed plate is outside the waterlogging caused by excessive rainfall chamber, the push rod passes the fixed setting on the fixed plate of backup pad one end, the other end is connected with the waterlogging caused by excessive rainfall board, the waterlogging caused by excessive rainfall board sets up in the waterlogging caused by excessive rainfall intracavity portion, the push rod can stretch out and draw back the drive waterlogging caused by excessive rainfall board linear motion. This setting makes rubbish fall into the waterlogging caused by excessive rainfall chamber from the hopper, promotes the waterlogging caused by excessive rainfall board extrusion waterlogging caused by excessive rainfall by the push rod and carries out solid-liquid separation.

Furthermore, a water collecting pipe is vertically inserted into one end of the bottom plate, a discharge hole is formed in the other end of the bottom plate, and a conveying belt is arranged on the lower portion of the bottom plate in parallel to the bottom plate. This setting makes the liquid after the separation discharge through the collector pipe, and the solid after the separation drops to the conveyer belt through the discharge gate and exports, and conveyor sets up with solid-liquid separation device is integrative, transports efficiency and improves to practice thrift manufacturing cost.

Furthermore, the draining board is provided with a plurality of, and is adjacent draining board upper portion is provided with a plurality of connecting rods, the connecting rod is articulated to be connected, can stretch out and draw back and make adjacent draining board apart from the extension or shorten. A plurality of waterlogging caused by excessive rainfall board set up and make by extruded rubbish quantity increase, and extrusion waterlogging caused by excessive rainfall efficiency improves.

Furthermore, a plurality of water tanks are arranged on the bottom plate in a staggered mode in a transverse and vertical mode and close to one end of the water collecting pipe, at least one water tank is communicated with the water collecting pipe, and the water collecting pipe is used for guiding the extruded liquid and is beneficial to collecting the liquid into the water collecting pipe to be discharged.

Further, purifier includes the filter, adopts the membrane filtration technique, for one or several kinds in micro-filtration membrane filtration technique, milipore filter filtration technique or the nanofiltration membrane filtration technique, should set up and can play purification, softening and degerming effect to sewage, and sewage obtains effectual processing.

A system for domestic waste and domestic sewage integrated processing, compare with prior art and have following advantage:

(1) the system for comprehensively treating the domestic garbage and the domestic sewage can integrate the domestic garbage and the domestic sewage into one system for comprehensive treatment, saves land resources, utilizes the solid garbage obtained after treatment to mix and burn as a combustion improver, generates purified water into steam to do work to generate electric energy by the heat of burning, effectively utilizes the heat value of the methane, can reduce the treatment cost, and improves the comprehensive utilization efficiency of recycling to the maximum extent;

(2) the system for comprehensively treating the domestic garbage and the domestic sewage adopts the mixed fuel boiler, the lower cavity enables the solid garbage and the methane to be mixed and combusted, the upper cavity is used as a steam generating device, the outer cavity can fully preheat water, the structural layout is reasonable, the heat insulation performance is good, the heat is reasonably utilized, the treated sewage is utilized to generate steam, the water resource is reasonably utilized, and the resource waste is avoided;

(3) a system that domestic waste and domestic sewage integrated treatment, the flue gas waste heat that mixed fuel boiler and high-pressure turbo generator in the system produced retrieves to be used for once more in the production electric energy, more play the energy saving, improve the effect of resourceful comprehensive utilization efficiency.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of a system for comprehensive treatment of domestic garbage and domestic sewage according to the present invention;

FIG. 2 is a schematic structural view of a system for comprehensive treatment of domestic garbage and domestic sewage according to an embodiment of the present invention;

FIG. 3 is a structural diagram of a solid-liquid separation apparatus according to an embodiment of the present invention;

FIG. 4 is a top view of a bottom plate of a solid-liquid separator according to an embodiment of the present invention;

FIG. 5 is a block diagram of a hybrid fuel boiler according to an embodiment of the present invention;

FIG. 6 is a structural diagram of a waste heat steam boiler according to an embodiment of the present invention;

FIG. 7 is an enlarged view of E in FIG. 6 according to the present invention;

fig. 8 is an enlarged view of F in fig. 6 according to the present invention.

Description of reference numerals:

1. a sedimentation tank; 2. a first variable frequency pump; 3. a garbage crushing device; 4. a solid-liquid separation device; 41. a hopper; 42. a support plate; 43. a base plate; 431. a water collection pipe; 432. a water tank; 433. a discharge hole; 44. a draining board; 45. a pillar; 46. a conveyor belt; 47. a connecting rod; 48. a fixing plate; 49. a push rod; 5. a grease separation device; 6. a grease storage device; 7. A water storage device; 8. a mixed fuel boiler; 81. a first cavity; 811. a flue gas outlet; 82. A second cavity; 821. a feed inlet; 822. a first vent; 83. a third cavity; 831. a discharge port; 84. a water tank; 841. a first steam outlet; 85. a fourth cavity; 851. A water pipe; 852. a water inlet; 86. a first separator; 87. a second separator; 88. a burner; 881. a second vent; 9. an induced draft fan; 10. a waste heat steam boiler; 101. a second steam outlet; 102. a water storage cavity; 103. a water inlet pipe; 104. a heat exchange pipe; 1041. an inner tube; 1042. an outer tube; 1044. plugging; 105. a heating cavity; 106. an air inlet pipe; 107. An exhaust chamber; 109. an air outlet; 11. a high pressure steam turbine generator; 12. a medium and low pressure steam turbine generator; 13. a cooling tower; 14. a clear water tank; 15. a second variable frequency pump; 16. a purification device; 17. a third variable frequency pump; 18. a fertilizer storage device; 19. a slag-liquid separation device; 20. A first slurry pump; 21. an anaerobic fermentation device; 22. and a second slurry pump.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The descriptions in the present application referring to "first", "second", "upper", "lower", "left", "right", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, the definition of "first" or "second" feature may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments can be combined with each other, but it is necessary to be able to realize that the technical solutions in the embodiments can be combined with each other on the basis of the realization of a person having ordinary skill in the art, and all that is required by the present invention is within the protection scope of the present invention.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The system comprises a garbage sorting device, a garbage crushing device, a solid-liquid separation device, a sedimentation tank, an oil separation device, a water storage device, a purification device, an anaerobic fermentation device, a slag-liquid separation device, a mixed fuel boiler, a high-pressure steam turbine generator, a waste heat steam boiler and a medium-low pressure steam turbine generator, wherein the garbage sorting device, the garbage crushing device, the solid-liquid separation device, the sedimentation tank, the oil separation device, the water storage device, the purification device, the anaerobic fermentation device, the slag-liquid separation device, the mixed fuel boiler, the high-pressure steam turbine generator, the waste heat steam boiler and the medium-low pressure steam turbine generator are arranged in the system:

after the domestic garbage is sorted and crushed by the garbage sorting device and the garbage crushing device, the domestic garbage is treated by the solid-liquid separation device, solid garbage is put into the mixed fuel boiler for combustion, domestic sewage is introduced into the sedimentation tank to separate sewage and sludge, the sewage is subjected to grease separation by the grease separation device and enters the water storage device, the sewage is purified by the purification device and then is introduced into the mixed fuel boiler for heating to generate steam, the steam generated by the mixed fuel boiler is introduced into the high-pressure turbine generator for acting to generate electric energy, and the sludge is fermented by the anaerobic fermentation device to generate biogas which is introduced into the mixed fuel boiler for mixed combustion with the solid garbage to provide heat energy; the flue gas with heat discharged by the high-pressure steam turbine generator is introduced into the waste heat steam boiler for heat exchange, the water introduced into the waste heat steam boiler by the purification device absorbs the heat to generate low-temperature steam, the low-pressure steam turbine generator is introduced to work to generate electric energy, the flue gas after the heat is exchanged by the waste heat steam boiler is discharged, and a part of the flue gas enters the anaerobic fermentation device and is beneficial to the fermentation process due to the residual heat of the flue gas; the liquid separated by the solid-liquid separation device is introduced into the grease separation device, and the separated liquid has grease due to the fact that part of wet garbage is mixed in the household garbage, and can be further separated and recycled; the anaerobic fermentation device is communicated with the residue-liquid separation device, biogas slurry separated by the residue-liquid separation device is introduced into the water storage device, the arrangement avoids waste of biogas slurry, and biogas residue is introduced into the fertilizer collection device; the high-pressure steam turbine generator is communicated with an oil cooler, the medium-low pressure steam turbine generator is communicated with a cooling tower, preferably, the grease separation device and the slag-liquid separation device are centrifugal machines, and separation is carried out by utilizing different specific gravities of substances.

The specific embodiment is shown in fig. 2, the system for the comprehensive treatment of domestic garbage and domestic sewage comprises a garbage crushing device 3, a solid-liquid separation device 4, a sedimentation tank 1, an oil separation device 5, a water storage device 7 and a purification device 16, the system comprises an anaerobic fermentation device 21, a slag-liquid separation device 19, a mixed fuel boiler 8, a high-pressure steam turbine generator 11, a waste heat steam boiler 10 and a medium-low pressure steam turbine generator 12, wherein a garbage crushing device 3 is connected with the input end of a solid-liquid separation device 4, the output end of the solid-liquid separation device 4 is respectively connected with a grease separation device 5 and the mixed fuel boiler 8, the upper part of a sedimentation tank 1 is communicated with a water storage device 7, the lower part of the sedimentation tank 1 is communicated with the anaerobic fermentation device 21, the sedimentation tank 1 can separate sewage from sludge, the sewage enters the water storage device 7 through the upper part of the sedimentation tank 1, and the sludge enters the anaerobic fermentation device 21 through the lower part of the sedimentation tank 1;

further, a first variable frequency pump 2 and a grease separation device 5 are arranged between the sedimentation tank 1 and the water storage device 7, the inlet end of the first variable frequency pump 2 is communicated with the upper part of the sedimentation tank 1, the outlet end of the first variable frequency pump is communicated with the inlet end of the grease separation device 5, the outlet end of the grease separation device 5 is communicated with the water storage device 7 and is also communicated with a grease storage device 6, a second slurry pump 22 is arranged between the sedimentation tank 1 and the anaerobic fermentation device 21, and the second slurry pump 22 pumps sludge into the anaerobic fermentation device 21;

further, the water storage device 7 is communicated with a purification device 16, the purification device 16 is communicated with a clean water tank 14, the sewage is filtered by the purification device 16 to form purified water and is stored in the clean water tank 14, preferably, the purification device 16 comprises a filter, adopts a membrane filtration technology, is one or more of a micro-filtration membrane filtration technology, an ultrafiltration membrane filtration technology or a nanofiltration membrane filtration technology, and is used for purifying and sterilizing the sewage;

further, an air outlet at the upper part of the anaerobic fermentation device 21 is communicated with the mixed fuel boiler 8, preferably, an air storage device is connected between the anaerobic fermentation device 21 and the mixed fuel boiler 8, a slag-liquid outlet at the bottom of the anaerobic fermentation device 21 is communicated with an inlet end of a slag-liquid separation device 19, an outlet end of the slag-liquid separation device 19 is respectively communicated with the fertilizer storage device 18 and the sedimentation tank 1, a first slag-liquid pump 20 is arranged between the anaerobic fermentation device 21 and the slag-liquid separation device 19 and used for extracting slag liquid, an outlet end of the slag-liquid separation device 19 is also communicated with the water storage device 7, a third variable frequency pump 17 is arranged between the slag-liquid separation device and the water storage device, the slag-liquid separation device 19 separates solid and liquid after anaerobic fermentation, the liquid is extracted to the water storage device 7 through the third variable frequency pump 17 and is subjected to purification treatment, and the solid is stored in the fertilizer storage device 18 and collected as fertilizer;

further, the bottom of the mixed fuel boiler 8 is communicated with an anaerobic fermentation device 21, the top of the mixed fuel boiler 8 is communicated with a high-pressure steam turbine generator 11 and a waste heat steam boiler 10, the middle of the mixed fuel boiler is communicated with a clean water tank 14 and a solid-liquid separation device 4, solid garbage separated by the solid-liquid separation device 4 and methane generated by the anaerobic fermentation device 21 are input into the mixed fuel boiler 8 to be combusted, so that steam generated by water in the clean water tank 14 enters the high-pressure steam turbine generator 11 to generate electric energy, flue gas with waste heat enters the waste heat steam boiler 10 to carry out heat exchange, the middle and the bottom of the mixed fuel boiler 8 are simultaneously communicated with an induced draft fan 9, and air is introduced to support combustion;

further, the middle part of the waste heat steam boiler 10 is communicated with a mixed fuel boiler 8 and a high-pressure steam turbine generator 11 to absorb the waste heat of the flue gas, the upper part of the waste heat steam boiler is communicated with a clean water tank 14, the top part of the waste heat steam boiler 10 is communicated with a medium-low pressure steam turbine generator 12, a second variable frequency pump 15 is arranged between the waste heat steam boiler 10 and the clean water tank 14 and used for pumping water in the clean water tank 14, the flue gas of the waste heat steam boiler 10 is discharged through the bottom part, one part of the flue gas is introduced into an anaerobic fermentation device 21 to provide temperature for fermentation, and the other part of the flue gas is discharged from a position D;

further, the medium-low pressure steam turbine generator 12 is also communicated with a cooling tower 13, the cooling tower 13 is communicated with a clean water tank 14, and purified water is used for cooling the medium-low pressure steam turbine generator 12, so that reasonable utilization of water resources can be ensured; the high-pressure steam turbine generator 11 adopts an oil cooling mode due to large power, so that the cooling effect is better.

Preferably, as shown in fig. 3 and 4, the solid-liquid separation device 4 includes a hopper 41, a support plate 42, a bottom plate 43, a pillar 45, a conveyor belt 46, a push rod 49, a draining plate 44, a connecting rod 47 and a fixing plate 48, the pillar 45 is disposed at the lower portion of the bottom plate 43, the conveyor belt 46 is disposed at the middle portion of the pillar 45, the conveyor belt 46 is disposed parallel to the length direction of the bottom plate 43 for conveying the separated solid waste, the support plate 42 is vertically disposed at the upper portion of the bottom plate 43, a draining cavity (the support plate is not shown in the direction perpendicular to the paper) is enclosed by the support plate 42, the hopper 41 is fixedly disposed at the top portion of the support plate 42, the hopper 41 discharges materials to the draining cavity, the fixing plate 48 is vertically fixed on the bottom plate 43 and disposed at the right side of the draining cavity, the push rod 49 is disposed at the middle portion of the right support plate 42, one end of the push rod 49 is fixed on the fixing plate 48 and extends and retracts along the length direction of the bottom plate 43, one end of the push rod 49 away from the fixing plate 48 is fixedly connected with the draining plate 44, the draining board 44 can play a draining role by being pressed with the supporting board 42 at one side, more than two draining boards 44 are arranged, the upper ends of every two adjacent draining boards 44 are hinged by a plurality of connecting rods 47, so as to realize the telescopic function, so that the distance between the draining plates 44 is extended or shortened to play a role of squeezing and draining, the quantity of the garbage squeezed is increased by arranging a plurality of draining plates 44, the squeezing efficiency is higher, one end of the optimized bottom plate 43 is provided with a water collecting pipe 431 for discharging the separated liquid, the other end is provided with a discharge hole 433, the discharge hole 433 is a through hole for discharging the separated solid garbage, a plurality of water tanks 432 are also arranged on the bottom plate 43 at one end close to the water collecting pipe 431, the water tanks 432 are arranged in a staggered manner in the transverse and vertical directions, at least one water tank 432 passes through the water collecting pipe 431, and the cross section of each water tank 432 is semicircular or square, so that the water tanks play a role in guiding and are used for collecting extruded liquid to the water collecting pipe 431 for discharge; in this embodiment, push rod 49 drives draining board 44 and moves left, the distance shortens between draining board 44, the extrusion waterlogging caused by excessive rainfall, liquid gets into the water catch pipe 431 that basin 432 gathered right side bottom plate 43 and set up and flows out, solid waste between draining board 44 transports left side discharge opening 433, rubbish drops to and carries away on the conveyer belt 46 through discharge opening 433, discharge opening 433 can set up at the inside left side of draining cavity, also can set up in draining cavity left side outside, if set up in draining cavity left side outside, then be provided with the opening on the left side backup pad 42, can make draining board 44 stretch out through the opening, release solid waste to discharge opening 433, it is preferred, push rod 49 is driven by cylinder or motor.

Preferably, as shown in fig. 5, the mixed fuel boiler 8 is cylindrical and includes a first cavity 81, a second cavity 82, a third cavity 83 and a fourth cavity 85, the first cavity 81, the second cavity 82 and the third cavity 83 are sequentially arranged from top to bottom, the fourth cavity 85 is annularly enclosed outside the second cavity 82, a water tank 84 is arranged inside the first cavity 81, a first steam outlet 841 is arranged at the top of the water tank 84, the first steam outlet 841 extends to the outside through the top wall of the first cavity 81 and is communicated with the high pressure steam turbine generator 11 to deliver steam, the lower part of the water tank 84 is communicated with the upper part of the fourth cavity 85 through a water pipe 851, the water tank 84 is not communicated with the inside of the first cavity 81, and a flue gas outlet 811 is arranged at the top of the first cavity 81 and is communicated with the waste heat steam boiler 10; a feed inlet 821 is obliquely and downwards arranged at the upper part of the second cavity 82, the feed inlet 821 penetrates through the outer wall of the second cavity 82 and the fourth cavity 85 to be communicated with the solid-liquid separation device 4, so that solid garbage can be conveniently and downwards scattered by gravity after being fed, agglomeration is avoided in the scattering process, the solid garbage can be fully combusted, and a first vent 822 is arranged at the bottom of the second cavity 82 to introduce air for combustion supporting; a first partition plate 86 is arranged between the second cavity 82 and the first cavity 81, the water tank 84 is placed on the first partition plate 86, the first partition plate 86 is a filter plate and is made of heat conducting materials, smoke entering the first cavity 81 can be primarily filtered, excessive fly ash is prevented from entering the first cavity 81, and the heat conducting effect is good; a second vent port 881 is arranged on the side of the third cavity 83 in a penetrating manner and is used for introducing air and biogas mixed gas, a burner 88 is arranged in the third cavity 83 and burns the introduced mixed gas, a second partition plate 87 is arranged between the third cavity 83 and the second cavity 82, the second partition plate 87 is a filter plate and can enable the mixed gas to pass through the second cavity 82 and be mixed with solid garbage for burning, on the other hand, large solid garbage is prevented from entering the third cavity 83 to block the burner 88, only falling ash can pass through, a funnel-shaped discharge port 831 is also arranged at the bottom of the third cavity 83 and is used for cleaning the falling ash, a water inlet 852 is arranged at the bottom of the fourth cavity 85 and is communicated with the clean water tank 14, the fourth cavity 85 can preheat water by utilizing the heat of the second cavity 82 and can cool the furnace wall, preferably, the fourth cavity 85 is simultaneously enclosed outside the first cavity 81 and the second cavity 82, while being capable of absorbing heat of the first receiving chamber 81;

the induced draft fan 9 works, the air and biogas mixed gas enters the burner 88 through the second vent port 881, the burner 88 works, the biogas and air mixed gas is burnt, the solid waste which falls into the upper part of the second clapboard 87 from the feed inlet 821 is ignited, the solid waste continuously falls, the biogas and air mixed gas is used as combustion improver to be mixed and burnt with the solid waste, meanwhile, the first vent port 822 is communicated with air to support combustion, the water in the water inlet 852 enters the fourth containing cavity 85 to absorb the heat of the furnace wall for preheating, the preheated water enters the water tank 84 through the water pipe 851, the water tank 84 is heated in the second containing cavity 82 to generate steam, the steam is discharged through the first steam outlet 841, the flue gas burnt in the second containing cavity 82 enters the first containing cavity 81 through the first clapboard 86 and is discharged through the flue gas outlet 811;

further, as shown in fig. 6, 7 and 8, the waste heat steam boiler 10 includes a water storage cavity 102, a heating cavity 105 and an exhaust cavity 107, the water storage cavity 102, the heating cavity 105 and the exhaust cavity 107 are sequentially arranged from top to bottom, an upper partition is arranged between the water storage cavity 102 and the heating cavity 105, a lower partition is arranged between the heating cavity 105 and the exhaust cavity 107, a second steam outlet 101 is arranged at the top of the water storage cavity 102, the second steam outlet 101 is communicated with the medium-low pressure steam turbine generator 12, a water inlet pipe 103 is arranged at the side part, the water inlet pipe 103 is communicated with the clean water tank 14, an air inlet pipe 106 is arranged at the lower part of the heating cavity 105, the air inlet pipe 106 is communicated with the high-pressure steam turbine generator 11 and the mixed fuel boiler 8, a plurality of heat exchange pipes 104 are fixedly arranged in the heating cavity 105, the heat exchange pipes 104 include an inner pipe 1041 and an outer pipe 1042 which are sleeved, an interlayer is arranged between the inner pipe 1041 and the outer pipe 1042, so as to enable flue gas to circulate, the bottom end of the inner tube 1041 is provided with a plug 1044, the upper part of the inner tube 1041 is fixedly embedded at an upper partition plate, the top end is open and is communicated with the water storage cavity 102, the lower part of the outer tube 1042 is fixedly embedded at a lower partition plate, a gap is reserved between the top end of the outer tube 1042 and the upper partition plate, the top end is open and is communicated with the heating cavity 105, the bottom end is open and is communicated with the exhaust cavity 107, flue gas can enter an interlayer from the top of the outer tube 1042 and enters the exhaust cavity 107 from the bottom end of the outer tube 1042, and a plurality of groups of fins are radially extended and arranged on the outer tube 1042; water is introduced into the water storage cavity 102 from the water inlet pipe 103, the water enters the inner pipe 1041 of the heat exchange pipe 104, the flue gas is introduced into the heat exchange cavity 105 from the air inlet pipe 106 and enters the interlayer through the top end of the outer pipe 1042 at the upper part of the heat exchange pipe 104 to exchange heat with the water of the inner pipe 1041, and the flue gas after heat exchange is discharged from the bottom end of the interlayer, enters the exhaust cavity 107 and is discharged from the air outlet 109. The generated steam rises into the top of the water storage cavity 102 from the inner pipe 1041 and enters the medium and low pressure steam turbine generator 12 through the second steam outlet 101 to do work.

The working principle of the comprehensive treatment system for domestic garbage and domestic sewage is as follows: the household garbage is conveyed from the position B to a garbage crushing device 3 after passing through a garbage sorting device, the garbage is crushed and then enters a solid-liquid separation device 4, the solid garbage is put into a mixed fuel boiler 8 after solid-liquid separation treatment for combustion to provide heat, and the separated liquid is introduced into a grease separation device 5 and is converged into the sewage to be treated; domestic sewage enters a sedimentation tank 1 through a position A, standing sedimentation is carried out, sludge at the bottom of the sedimentation tank 1 enters an anaerobic fermentation device 21 through a second slurry pump 22 to carry out anaerobic fermentation to generate methane, sewage at the upper part of the sedimentation tank 1 is pumped into a grease separation device 5 through a first variable frequency pump 2, separated grease enters a grease storage device 6 to be collected, the separated sewage enters a water storage device 7 and is filtered by a purification device 16 to enter a water purification tank 14, water in the water purification tank is pumped out through a second variable frequency pump 15, one part of the separated grease is introduced into a water tank 84 of a mixed fuel boiler 8 to absorb heat to generate steam, the other part of the separated grease is introduced into a water storage cavity 102 of a waste heat steam boiler 10 to absorb heat to generate steam, and water in the water purification tank 14 is also introduced into a cooling tower 13 to cool a medium-low pressure generator turbine 12; steam in the mixed fuel boiler 8 applies work to the high-pressure steam turbine generator 11 to generate electric energy, steam in the waste heat steam boiler 10 applies work to the medium-low pressure steam turbine generator 12 to generate electric energy, and flue gas generated by combustion of the mixed fuel boiler 8 and flue gas generated by the high-pressure steam turbine generator 11 enter a heating cavity 105 of the waste heat steam boiler 10 to provide heat; biogas generated by the anaerobic fermentation device 21 is introduced into a third containing cavity 83 of the mixed fuel boiler 8 for combustion, a part of smoke discharged by the waste heat steam boiler 10 is introduced into the anaerobic fermentation device 21 for auxiliary fermentation, a part of smoke is discharged into the atmosphere through a position D, when the moisture of the anaerobic fermentation device 21 is insufficient, a part of purified water filtered by a filter is introduced into the anaerobic fermentation device 21, slag liquid fermented by the anaerobic fermentation device 21 is pumped into a slag-liquid separation device 19 from the bottom by a first slag-liquid pump 20 for separation, the separated biogas slag is stored in a fertilizer storage device 18 to be used as fertilizer, and the separated biogas liquid is pumped into a water storage device 7 by a third variable frequency pump 17; the induced draft fan 9 introduces air from the position C into the second accommodating cavity 82 and the third accommodating cavity 83 of the mixed fuel boiler 8 respectively for supporting combustion.

It is worth saying that the inlet end of the garbage crushing device 3 is connected with a garbage sorting device for sorting garbage which is burned to generate a large amount of toxic gas such as metal garbage, a pretreatment device is connected between the anaerobic fermentation device 21 and the sedimentation tank 1, the pretreatment device is either a hydrolysis device or a heat treatment device, the anaerobic fermentation process is facilitated, the gas production efficiency is improved, and other parts needing control valves are in the prior art and are not described again.

Above-mentioned embodiment can make domestic waste and domestic sewage obtain comprehensive utilization to obtain effective processing in same place, can practice thrift land resource, marsh gas after the processing generates electricity, the natural pond sediment is retrieved as fertilizer, the purified water after the processing absorbs heat production steam power generation and can cool off, the heat after the exchange obtains rational utilization, this system structure is compact, has avoided water resource and thermal waste, makes the resource obtain the maximize rational utilization.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (10)

1. The utility model provides a system for domestic waste and domestic sewage integrated processing which characterized in that: including rubbish sorting device, rubbish reducing mechanism, solid-liquid separation equipment, sedimentation tank, grease separator, water storage device, purifier, anaerobic fermentation device, sediment liquid separator, mixed fuel boiler, high pressure turbo generator, exhaust-heat steam boiler and medium and low pressure turbo generator:

the garbage sorting device, the garbage crushing device and the solid-liquid separation device are communicated in sequence; the outlet end of the solid-liquid separation device is simultaneously communicated with the mixed fuel boiler and the input ends of the grease separation device; the outlet end of the sedimentation tank is respectively communicated with the input ends of the anaerobic fermentation device and the oil separation device; the gas outlet end of the anaerobic fermentation device is communicated with the mixed fuel boiler, a slag-liquid outlet is communicated with the slag-liquid separation device, the slag-liquid separation device is also communicated with the water storage device, and the outlet end of the grease separation device is sequentially communicated with the water storage device, the purification device and the mixed fuel boiler; the steam outlet of the mixed fuel boiler is communicated with the high-pressure steam turbine generator, and the flue gas outlet is communicated with the waste heat steam boiler; the high-pressure steam turbine generator is communicated with the waste heat steam boiler; the waste heat steam boiler is also communicated with the purification device, the anaerobic fermentation device and the medium and low pressure steam turbine generator, the medium and low pressure steam turbine generator is communicated with a cooling tower, and the cooling tower is connected with a water purification tank;

the mixed fuel boiler comprises a first cavity, a second cavity, a third cavity and a fourth cavity, wherein the first cavity, the second cavity and the third cavity are sequentially arranged from top to bottom, the fourth cavity is annularly enclosed outside the second cavity, a water tank is arranged inside the first cavity, the lower part of the water tank is communicated with the fourth cavity through a pipeline, the upper part of the water tank penetrates through the top of the first cavity and is provided with a steam outlet, the steam outlet is communicated with the high-pressure turbine generator, the upper part of the first cavity is provided with a flue gas outlet, the flue gas outlet is communicated with the exhaust-heat steam boiler, the fourth cavity is provided with a water inlet, the water inlet is communicated with the purifying device, the second cavity penetrates through the fourth cavity and is obliquely and downwards provided with a feed inlet, the feed inlet is communicated with the solid-liquid separating device, and the lower part of the third cavity is provided with a vent hole, the vent hole is communicated with the anaerobic fermentation device, a combustor is arranged in the third accommodating cavity, and a discharge hole is formed in the bottom of the third accommodating cavity.

2. The system for the integrated treatment of domestic waste and domestic sewage according to claim 1, wherein: a first partition plate is arranged between the first containing cavity and the second containing cavity, a second partition plate is arranged between the second containing cavity and the third containing cavity, the first partition plate and the second partition plate are filter plates, and the water tank is fixedly arranged on the first partition plate.

3. The system for the integrated treatment of domestic waste and domestic sewage according to claim 1, wherein: the waste heat steam boiler comprises a water storage cavity, a heating cavity and an exhaust cavity, wherein the water storage cavity, the heating cavity and the exhaust cavity are sequentially arranged from top to bottom, the water storage cavity is communicated with the purification device, the upper part of the water storage cavity is communicated with the medium-low pressure steam turbine generator, and the heating cavity is communicated with the high-pressure steam turbine generator and the mixed fuel boiler; the exhaust cavity is communicated with the heating cavity.

4. The system for the integrated treatment of domestic waste and domestic sewage according to claim 3, wherein: the heating intracavity is fixed and is provided with a plurality of heat exchange tubes, inner tube and outer tube that the heat exchange tube was established including the cover, the inner tube with set up the intermediate layer between the outer tube, inner tube bottom shutoff, the top with water storage chamber intercommunication, the outer tube top with heating chamber intercommunication, the bottom with the chamber intercommunication of exhausting.

5. The system for the integrated treatment of domestic waste and domestic sewage according to claim 4, wherein: and a plurality of groups of fins extend radially on the outer tube.

6. The system for the integrated treatment of domestic waste and domestic sewage according to claim 1, wherein: the solid-liquid separation device comprises a hopper, a bottom plate, a supporting plate, a draining plate, a push rod and a fixing plate, wherein the supporting plate is perpendicular to the bottom plate and is provided with a draining cavity, the hopper is fixedly arranged at the top of the supporting plate, the fixing plate is vertically arranged outside the draining cavity, the push rod penetrates through one end of the supporting plate and is fixedly arranged on the fixing plate, the other end of the supporting plate is connected with the draining plate, the draining plate is arranged inside the draining cavity, and the push rod can stretch and drive the draining plate to move linearly.

7. The system for the integrated treatment of domestic waste and domestic sewage according to claim 6, wherein: the water collecting pipe is vertically inserted into one end of the bottom plate, the discharge hole is formed in the other end of the bottom plate, and the conveying belt is arranged on the lower portion of the bottom plate in parallel to the bottom plate.

8. The system for the integrated treatment of domestic waste and domestic sewage according to claim 6, wherein: the draining board is provided with a plurality of, and is adjacent draining board upper portion is provided with a plurality of connecting rods, the connecting rod is articulated to be connected, can stretch out and draw back and make adjacent draining board apart from extension or shorten.

9. The system for the integrated treatment of domestic waste and domestic sewage according to claim 7, wherein: a plurality of water tanks are arranged on the bottom plate in a staggered mode in the transverse direction and the vertical direction and close to one end of the water collecting pipe, and at least one water tank is communicated with the water collecting pipe.

10. The system for the integrated treatment of domestic waste and domestic sewage according to claim 1, wherein: the purification device comprises a filter, adopts a membrane filtration technology and is one or more of a microfiltration membrane filtration technology, an ultrafiltration membrane filtration technology or a nanofiltration membrane filtration technology.

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