CN115488134A - Kitchen waste carbon source conversion cooperative treatment device and method applied to sewage treatment plant - Google Patents
Kitchen waste carbon source conversion cooperative treatment device and method applied to sewage treatment plant Download PDFInfo
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- CN115488134A CN115488134A CN202211019254.9A CN202211019254A CN115488134A CN 115488134 A CN115488134 A CN 115488134A CN 202211019254 A CN202211019254 A CN 202211019254A CN 115488134 A CN115488134 A CN 115488134A
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- 239000010806 kitchen waste Substances 0.000 title claims abstract description 62
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 40
- 239000010865 sewage Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 title description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000003756 stirring Methods 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000002195 synergetic effect Effects 0.000 claims abstract description 10
- 239000008399 tap water Substances 0.000 claims description 24
- 235000020679 tap water Nutrition 0.000 claims description 24
- 239000012670 alkaline solution Substances 0.000 claims description 19
- 238000011001 backwashing Methods 0.000 claims description 19
- 244000005700 microbiome Species 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 9
- 239000010813 municipal solid waste Substances 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 239000004793 Polystyrene Substances 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 239000012295 chemical reaction liquid Substances 0.000 claims description 4
- 238000011278 co-treatment Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 description 10
- 230000007613 environmental effect Effects 0.000 description 9
- 239000010802 sludge Substances 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000010791 domestic waste Substances 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/38—Stirring or kneading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
- B01F27/906—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms with fixed axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/96—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with openwork frames or cages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/11—Maintenance of mixers using fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/60—Biochemical treatment, e.g. by using enzymes
- B09B3/65—Anaerobic treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/70—Kitchen refuse; Food waste
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a device and a method for converting kitchen waste into a carbon source for cooperative treatment in a sewage treatment plant, which comprises the following steps: the device comprises a tank body, a feed inlet, a detection module, a water outlet and a stirring device; the feed inlet sets up on jar the body, detection module sets up on jar inside wall of the body, agitating unit sets up on jar the body, just agitating unit's one end inserts jar internally, the delivery port sets up the below at jar body. According to the invention, the waste liquid generated by the synergistic treatment of the kitchen waste is used as a supplementary carbon source of the sewage treatment plant, so that the operation cost of the sewage treatment plant is reduced.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a device and a method for converting kitchen waste into a carbon source for cooperative treatment in a sewage treatment plant.
Background
The rapidly developed catering industry brings great benefits to the economy of China and brings a great amount of kitchen waste, the requirement for collecting, transporting and treating the kitchen waste in various regions is increased rapidly, the local kitchen treatment capacity is limited, and the actual treatment requirement cannot be met. Research using organic matter as an external carbon source for sewage treatment plants has been carried out for two decades and many literatures have verified the effectiveness of common carbon sources (acetic acid, ethanol and glucose), but the high cost of these carbon sources makes them difficult to be applied in practice.
In patent document with publication number CN111036643A, a method for coprocessing kitchen waste, domestic waste and sludge in sewage plants is disclosed, solid-phase materials after solid-liquid separation of the kitchen waste are subjected to a domestic waste incineration step, so that the solid-phase materials of the kitchen waste and the domestic waste are incinerated together to generate power; selectively mixing oil-water mixed liquor obtained after solid-liquid separation of the kitchen waste with sludge, effectively controlling the heat value and the fluidity of the sludge mixture, and ensuring smooth drying and incineration of the sludge; the heat value of the sludge is improved, the consumption of sludge drying incineration natural gas can be saved, and the energy-saving effect is achieved; simultaneously, solve the problem that kitchen cabinet and domestic waste mixed fermentation grease lead to the leachate membrane to block up, moreover, the aqueous phase biodegradability behind the kitchen cabinet waste liquid phase separation grease is good, is favorable to carrying out the coprocessing with domestic waste's leachate.
In view of the above-mentioned related arts, the inventors believe that the high cost of the carbon source makes it difficult to be applied in practice, and therefore, a new technical solution is required to improve the above-mentioned technical problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device and a method for converting kitchen waste into a carbon source for cooperative treatment in a sewage treatment plant.
The invention provides a synergistic treatment device for converting kitchen waste into a carbon source, which is applied to a sewage treatment plant, and comprises: the device comprises a tank body, a feed inlet, a detection module, a water outlet and a stirring device;
the feed inlet sets up on jar body, detection module sets up on jar internal side wall of body, agitating unit sets up on jar body, just agitating unit's one end is inserted jar internally, the delivery port sets up the below at jar body.
Preferably, the tank body is also provided with a tap water inlet, a back flushing port, a condensed water outlet, a steam inlet and an alkaline solution inlet;
the tap water inlet is arranged on one side of the feed port, the height of the horizontal plane of the tap water inlet is lower than that of the horizontal plane of the feed port, the alkaline solution inlet is arranged on one side of the feed port, which is far away from the tap water inlet, the steam inlet is arranged on the side wall of the tank body, and the condensed water outlet is arranged below the tank body; the back washing port is arranged below one end of the stirring device inserted into the tank body.
Preferably, an insulating layer is arranged on the outer side wall of the tank body.
Preferably, a heating layer is arranged between the outer side wall of the tank body and the heat preservation layer.
Preferably, the heat insulation layer is a polystyrene heat insulation plate.
The invention also provides a method for converting kitchen waste into carbon source for cooperative treatment in a sewage treatment plant, which applies the device for converting kitchen waste into carbon source for cooperative treatment in the sewage treatment plant, and comprises the following steps:
step S1: selecting automatic control or manual control through PLC program control;
step S2: when manual control is selected, the automatic system is closed, and the valves and the stirring device are manually selected to start and stop;
and step S3: when automatic control is selected, the main program is started to circulate, the spiral conveyor is started, the pretreated kitchen waste enters the tank body from the feeding hole through the spiral conveyor, and the preset feeding time is set;
and step S4: when the preset feeding time is reached, closing the spiral conveyor, stopping feeding, and opening a stirring device, wherein the stirring device consists of a motor and a stirrer, and the stirring speed is controlled by controlling the rotating speed of the motor;
step S5: decomposing the kitchen waste in the tank by microorganisms, opening a water outlet valve after the microorganisms react with the kitchen waste for a period of time, and discharging a reaction liquid for synergistic treatment of the kitchen waste for adding an external carbon source in a sewage treatment plant;
step S6: setting preset time, and closing a water outlet valve when the preset time is reached;
step S7: and arranging an emergency stop button, and when the emergency stop button is pressed, stopping the operation of all the switches, the valves and the stirring device.
Preferably, the detection module comprises a temperature detector, a PH detector and a humidity detector, and is used for monitoring the conditions of temperature, PH and humidity in the tank in real time and reflecting data on the LED display screen; when the temperature is lower than the preset temperature, the steam inlet valve is opened to heat the tank body, the steam inlet valve is closed after heating, and the heat preservation layer preserves the heat of the tank body; when the PH value is lower than the preset value, the alkaline solution inlet valve is opened, and after a certain time, the alkaline solution inlet valve is closed; and when the humidity is lower than the preset value, the valve of the tap water inlet is opened, and the valve of the tap water inlet is closed after the preset time is added.
Preferably, the temperature detector, the PH detector and the humidity detector are connected to the PLC through an EM235 analog quantity extension module, after the main program is started, when preset time is reached, the condensed water time relay acts, the condensed water outlet valve is opened, and the condensed water outlet valve is closed after preset time.
Preferably, after the main program is started, when the preset time is reached, the back washing time relay acts, the back washing port valve is opened, the tank body is back washed for a period of time, and when the preset time is reached, the back washing port valve is closed.
Preferably, the preset time is set, the opening and closing of the screw conveyor are controlled, the kitchen waste automatically enters the tank body from the feeding hole, and the opening and closing of the water outlet valve are controlled.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the waste liquid generated by the synergistic treatment of the kitchen waste is used as a supplementary carbon source of the sewage treatment plant, so that the operation cost of the sewage treatment plant is reduced;
2. the invention provides a reaction place with proper conditions for anaerobic catalytic reaction of kitchen waste, the kitchen waste is fully degraded into a carbon source required by a sewage plant by microorganisms by controlling temperature, humidity, PH and stirring speed, and an automatic flushing device is designed, so that the blocking frequency of kitchen waste treatment equipment is reduced, the operating risk of personnel is reduced, the automation degree of the equipment is improved, and high-efficiency operation is realized;
3. according to the invention, by controlling factors influencing the decomposition rate of the kitchen waste, a good reaction environment is provided for microorganisms, the kitchen waste is decomposed into an external carbon source of a sewage treatment plant, the treatment cost of the sewage treatment plant is reduced, and the equipment is automatically operated, so that the operation risk of workers is reduced, the abrasion of the equipment is reduced, the service life of the equipment is prolonged, and the working efficiency is improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a structural diagram of a kitchen waste co-processing device according to the present invention;
FIG. 2 is a schematic diagram of a PLC control system of the present invention;
FIG. 3 is a circuit diagram of the PLC hardware of the present invention;
FIG. 4 is a flow chart of a main program of the PLC of the present invention;
FIG. 5 is a flow chart of a PLC reaction condition control subroutine of the present invention;
wherein:
condensed water outlet 8 of feed inlet 1
Tap water inlet 2 heat insulation layer 9
Stirrer 5 manhole 12
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the invention.
Example 1:
the invention provides a synergistic treatment device for converting kitchen waste into a carbon source, which is applied to a sewage treatment plant, and comprises: the device comprises a tank body 4, a feed inlet 1, a detection module 3, a water outlet 7 and a stirring device; the feed inlet 1 is arranged on the tank body 4, the detection module 3 is arranged on the inner side wall of the tank body 4, the stirring device is arranged on the tank body 4, one end of the stirring device is inserted into the tank body 4, and the water outlet 7 is arranged below the tank body 4.
The tank body 4 is also provided with a tap water inlet 2, a back flushing port 6, a condensed water outlet 78, a steam inlet 11 and an alkaline solution inlet 14; the tap water inlet 2 is arranged at one side of the feed port 1, the height of the horizontal plane of the tap water inlet 2 is lower than that of the horizontal plane of the feed port 1, the alkaline solution inlet 14 is arranged at one side of the feed port 1 far away from the tap water inlet 2, the steam inlet 11 is arranged on the side wall of the tank body 4, and the condensed water outlet 78 is arranged below the tank body 4; the back washing opening 6 is arranged below one end of the stirring device inserted into the tank body 4.
The outer side wall of the tank body 4 is provided with a heat-insulating layer 9; a heating layer 10 is arranged between the outer side wall of the tank body 4 and the heat preservation layer 9; the heat preservation layer 9 is a polystyrene heat preservation plate.
The invention also provides a method for converting kitchen waste into carbon source for cooperative treatment in a sewage treatment plant, which applies the device for converting kitchen waste into carbon source for cooperative treatment in the sewage treatment plant, and the method comprises the following steps:
step S1: selecting automatic control or manual control through PLC program control;
step S2: when manual control is selected, the automatic system is closed, and the valves and the stirring device are manually selected to start and stop;
and step S3: when automatic control is selected, the main program cycle is started, the spiral conveyor is opened, the pretreated kitchen waste enters the tank body 4 from the feeding hole 1 through the spiral conveyor, and the preset feeding time is set;
and step S4: when the preset feeding time is reached, closing the spiral conveyor, stopping feeding, and opening a stirring device, wherein the stirring device consists of a motor 13 and a stirrer 5, and the stirring speed is controlled by controlling the rotating speed of the motor 13;
step S5: decomposing the kitchen waste in the tank by microorganisms, opening a valve of a water outlet 7 after the microorganisms react with the kitchen waste for a period of time, and discharging the kitchen waste synergistic treatment reaction liquid for adding an external carbon source in a sewage treatment plant;
step S6: setting preset time, and closing a valve of the water outlet 7 when the preset time is reached;
step S7: and arranging an emergency stop button, and when the emergency stop button is pressed, stopping the operation of all the switches, the valves and the stirring device.
The detection module 3 comprises a temperature detector, a PH detector and a humidity detector, and the detection module 3 monitors the temperature, PH and humidity conditions in the tank in real time and reflects data on an LED display screen; when the temperature is lower than the preset temperature, the valve of the steam inlet 11 is opened to heat the tank body 4, the valve of the steam inlet 11 is closed after heating, and the heat preservation layer 9 is used for preserving the heat of the tank body 4; when the PH value is lower than the preset value, the valve of the alkaline solution inlet 14 is opened, and the valve of the alkaline solution inlet 14 is closed after a certain time; when the humidity is lower than the preset value, the valve of the tap water inlet 2 is opened, and the valve of the tap water inlet 2 is closed after the preset time is added.
The temperature detector, the PH detector and the humidity detector are connected to the PLC through the EM235 analog quantity extension module, after the main program is started, when preset time is reached, the condensed water time relay acts, the valve of the condensed water outlet 78 is opened, and after the preset time, the valve of the condensed water outlet 78 is closed; after the main program is started, when the preset time is reached, the back washing time relay acts, the valve of the back washing port 6 is opened, the tank body 4 is back washed for a period of time, and when the preset time is reached, the valve of the back washing port 6 is closed; and (3) setting preset time, controlling the opening and closing of the screw conveyor, enabling the kitchen waste to automatically enter the tank body 4 from the feed inlet 1, and controlling the opening and closing of the valve of the water outlet 7.
Example 2:
example 2 is a preferred example of example 1, and the present invention will be described in more detail.
To the influence of temperature to microorganism anaerobism catalytic efficiency, join in marriage the temperature detector, detect jar internal temperature 4 to design jar 4 heat preservation 9 and zone of heating 10 of body, when the temperature is less than preset temperature, open the steam valve, with high-temperature steam injection device zone of heating 10, the jar internal temperature rapid heating up this moment, at the outer increase heat preservation 9 of jar body 4, insulation material uses the polystyrene heated board, can prevent that the heat from running off, keeps jar internal temperature invariant. The installation time relay controls the condensed water discharge frequency and the discharge time generated by the heating layer 10, after the device is started, the time relay acts after a certain time, the condensed water outlet valve is opened, the condensed water is discharged, after a period of time, the time relay acts to close the condensed water outlet valve, and the timed and quantitative discharge of the condensed water is realized.
Through a large amount of experiments, under neutral environment, kitchen garbage decomposition rate is faster, and kitchen garbage is most slightly acidic, only needs to add a small amount of alkaline solution can improve the decomposition rate of microorganism to kitchen garbage, to PH to the influence of microbial reaction, disposes the PH detector, detects the interior PH value of jar body 4, when decomposition liquid PH is less than the default, opens alkaline solution inlet valve voluntarily, adjusts decomposition liquid PH for PH maintains at neutrality in the jar.
To the influence of ambient humidity on the growth of microorganisms, a humidity detector is arranged to detect the ambient humidity in the tank, and when the humidity in the tank is lower than a preset value, a valve of a tap water inlet 2 is opened to increase the humidity in the tank.
Aiming at the influence of the stirring parameters on the catalytic efficiency of the kitchen waste, the stirring speed of the stirring device is controlled by controlling the rotating speed of the motor 13, so that the kitchen waste is fully decomposed by microorganisms.
Aiming at the problem that the kitchen waste co-processing device is easy to block, the tank body 4 is designed to avoid stirring dead angles, the back washing device is designed, the time relay is installed to control washing time and washing frequency, and the tank body 4 is automatically washed.
The invention relates to a synergistic treatment device for converting kitchen waste into an external carbon source for sewage treatment of a sewage treatment plant. The device consists of a feed inlet 1, a tap water inlet 2, a detection module 3, a tank body 4, a stirrer 5, a back flushing port 6, a water outlet 7, a condensate water outlet 78, a heat preservation layer 9, a heating layer 10, a steam inlet 11, a manhole 12, a motor 13 and an alkaline solution inlet 14.
And the automatic control or the manual control is selected through PLC program control, when the manual control is selected, the automatic system is closed, and the valves and the stirring device are manually selected to be started and stopped. When selecting automatic control, get into the main program circulation, screw conveyer opens, and the kitchen garbage after the preliminary treatment gets into jar body 4 through screw conveyer from feed inlet 1, sets up and predetermines the feeding time, and after reaching predetermineeing the feeding time, close screw conveyer, stop the feeding, open agitating unit, agitating unit comprises motor 13 and agitator 5, through control motor 13 rotational speed, controls stirring rate. At the moment, the microorganisms decompose the kitchen waste in the tank, after the microorganisms react with the kitchen waste for a period of time, the valve of the water outlet 7 is opened, and the kitchen waste synergistic treatment reaction liquid is discharged for adding an external carbon source in a sewage treatment plant. And setting preset time, and closing the valve of the water outlet 7 when the preset time is reached. And arranging an emergency stop button, and when the emergency stop button is pressed, stopping the operation of all the switches, the valves and the stirring device.
According to the PLC hardware circuit schematic diagram shown in fig. 3, the temperature detector, the PH detector, the humidity detector is connected to the PLC through the EM235 analog quantity extension module, SB0 is the total button of scram in the diagram, SA1 is the total contactor start button, SA2 is the manual/automatic switching button, KT1 is the comdenstion water time relay, the main program starts the back, when reaching the preset time, the comdenstion water time relay moves, comdenstion water delivery port 78 valve is opened, close comdenstion water delivery port 78 valve after a period of time, realize that the 10 comdenstion water of zone of heating is discharged regularly and quantitatively. KT2 is a back washing time relay, after the main program is started, when the preset time is reached, the back washing time relay acts, the valve of the back washing port 6 is opened, the back washing of the tank body 4 is carried out for a period of time, and when the preset time is reached, the valve of the back washing port 6 is closed, so that the timed back washing of the tank body 4 is realized, and the water outlet 7 is prevented from being blocked. KT3 is main program time relay, sets up the time of predetermineeing, controls screw conveyer switching, makes kitchen garbage automatic follow feed inlet 1 get into jar body 4 to the switching of control delivery port 7 valve.
In fig. 3, KM1 is a condensate water outlet 78 valve, KM2 is a back flush port 6 valve, KM31 is a screw conveyer switch, KM32 is a water outlet 7 valve, KM33 is a motor 13 switch coil, KM4 is a steam inlet 11 valve, KM5 is an alkaline solution inlet 14 valve, KM6 is a tap water inlet 2 valve, and an LED is an LED display screen capable of displaying detection data of the detection module 3.
The utility model provides a be applied to sewage treatment plant kitchen garbage commentaries on classics carbon source coprocessing device, includes feed inlet 1, delivery port 7, agitating unit, detection module 3 to and little biological reaction environmental condition adjusts the execution module, through the environmental condition factor of control influence microorganism reaction rate, thereby improves microorganism reaction rate, improves the conversion efficiency that kitchen garbage turns into the carbon source. Automatic feeding, stirring and water discharging of the kitchen waste are controlled through a program, and a manual/automatic switching button is arranged. Through program control, when the environmental conditions are higher than the preset value, the corresponding environmental condition adjusting execution module is controlled by the program to be opened and closed, and the reaction environmental conditions for decomposing the kitchen waste by the microorganisms are adjusted, so that the reaction is carried out under the optimal environmental conditions. The tank body 4 is designed, so that dead angles of stirring are avoided, the kitchen waste can react more fully and is not easy to block, the backwashing device is designed, and the backwashing period is controlled by the time relay, so that the tank body 4 is backwashed regularly. In order to control the environmental temperature of microorganisms, when the tank body 4 is subjected to heating treatment, steam is added into the heating layer 10, a small amount of condensed water is produced in the process, a condensed water outlet is arranged, and the opening and closing of a valve are controlled through a time relay, so that the timed and quantitative discharge of the condensed water is realized. In order to ensure the temperature in the tank body 4 to be kept, a heat insulation layer 9 is designed, and the heat insulation layer 9 adopts a polystyrene heat insulation plate to prevent temperature loss.
Those skilled in the art will understand this embodiment as a more specific description of embodiment 1.
It is well within the knowledge of a person skilled in the art to implement the system and its various devices, modules, units provided by the present invention in a purely computer readable program code means that the same functionality can be implemented by logically programming method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a be applied to sewage treatment plant kitchen garbage commentaries on classics carbon source coprocessing device which characterized in that includes: the device comprises a tank body (4), a feed inlet (1), a detection module (3), a water outlet (7) and a stirring device;
the feed inlet (1) is arranged on the tank body (4), the detection module (3) is arranged on the inner side wall of the tank body (4), the stirring device is arranged on the tank body (4), one end of the stirring device is inserted into the tank body (4), and the water outlet (7) is arranged below the tank body (4).
2. The device applied to the cooperative treatment of the carbon source transferred from the kitchen waste of the sewage treatment plant according to the claim 1, wherein the tank body (4) is further provided with a tap water inlet (2), a back flushing port (6), a condensed water outlet (8), a steam inlet (11) and an alkaline solution inlet (14);
the tap water inlet (2) is arranged on one side of the feed port (1), the height of the horizontal plane of the tap water inlet (2) is lower than that of the horizontal plane of the feed port (1), the alkaline solution inlet (14) is arranged on one side, away from the tap water inlet (2), of the feed port (1), the steam inlet (11) is arranged on the side wall of the tank body (4), and the condensed water outlet (8) is arranged below the tank body (4); the back washing port (6) is arranged below one end of the stirring device inserted into the tank body (4).
3. The device applied to the co-treatment of converting kitchen waste into carbon source in the sewage treatment plant according to claim 1, is characterized in that an insulating layer (9) is arranged on the outer side wall of the tank body (4).
4. The device applied to the co-processing of the carbon source transferred from the kitchen waste of the sewage treatment plant according to the claim 3 is characterized in that a heating layer (10) is arranged between the outer side wall of the tank body (4) and the insulating layer (9).
5. The device applied to the co-treatment of converting the kitchen waste into the carbon source for the sewage treatment plant according to claim 4, wherein the heat insulation layer (9) is a polystyrene heat insulation plate.
6. The method for converting the kitchen waste into the carbon source and cooperatively processing the kitchen waste into the carbon source for the sewage treatment plant is characterized by applying the device for converting the kitchen waste into the carbon source and cooperatively processing the carbon source for the sewage treatment plant as claimed in any one of claims 1 to 5, and the method comprises the following steps:
step S1: selecting automatic control or manual control through PLC program control;
step S2: when manual control is selected, the automatic system is closed, and the valves and the stirring device are manually selected to start and stop;
and step S3: when automatic control is selected, the circulation of a main program is started, a spiral conveyor is opened, the kitchen waste after pretreatment enters a tank body (4) from a feeding hole (1) through the spiral conveyor, and the preset feeding time is set;
and step S4: when the preset feeding time is reached, closing the spiral conveyor, stopping feeding, and opening a stirring device, wherein the stirring device consists of a motor (13) and a stirrer (5), and the stirring speed is controlled by controlling the rotating speed of the motor (13);
step S5: the kitchen waste is decomposed by the microorganisms in the tank, and after the microorganisms react with the kitchen waste for a period of time, a valve at a water outlet (7) is opened, and the reaction liquid for the synergistic treatment of the kitchen waste is discharged and used for adding an external carbon source in a sewage treatment plant;
step S6: setting preset time, and closing a valve of the water outlet (7) when the preset time is reached;
step S7: and arranging an emergency stop button, and when the emergency stop button is pressed, stopping the operation of all the switches, the valves and the stirring device.
7. The method applied to the cooperative treatment of the carbon source transferred from the kitchen waste of the sewage treatment plant according to the claim 6, wherein the detection module (3) comprises a temperature detector, a PH detector and a humidity detector, the detection module (3) monitors the temperature, the PH and the humidity in the tank in real time, and the data are reflected on an LED display screen; when the temperature is lower than the preset temperature, the valve of the steam inlet (11) is opened to heat the tank body (4), the valve of the steam inlet (11) is closed after heating, and the heat insulation layer (9) insulates the tank body (4); when the PH value is lower than the preset value, the valve of the alkaline solution inlet (14) is opened, and the valve of the alkaline solution inlet (14) is closed after a certain time; when the humidity is lower than the preset value, the valve of the tap water inlet (2) is opened, and the valve of the tap water inlet (2) is closed after the preset time is added.
8. The method for converting kitchen waste into a carbon source and cooperatively processing the kitchen waste into the carbon source for the sewage treatment plant according to claim 7, wherein the temperature detector, the pH detector and the humidity detector are connected to a PLC through an EM235 analog quantity extension module, after a main program is started, when a preset time is reached, a condensed water time relay is operated, a valve of a condensed water outlet (8) is opened, and after the preset time is reached, the valve of the condensed water outlet (8) is closed.
9. The method for converting kitchen waste into carbon source and co-processing the same as in claim 7, wherein after the main program is started, when a preset time is reached, the back flush time relay is actuated, the valve of the back flush port (6) is opened, the tank body (4) is back flushed for a period of time, and when the preset time is reached, the valve of the back flush port (6) is closed.
10. The method for converting kitchen waste into carbon source for the synergistic treatment of sewage treatment plant according to claim 7, wherein the preset time is set to control the opening and closing of the screw conveyor, so that the kitchen waste automatically enters the tank body (4) from the feeding hole (1) and the opening and closing of the valve of the water outlet (7) are controlled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211019254.9A CN115488134A (en) | 2022-08-24 | 2022-08-24 | Kitchen waste carbon source conversion cooperative treatment device and method applied to sewage treatment plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211019254.9A CN115488134A (en) | 2022-08-24 | 2022-08-24 | Kitchen waste carbon source conversion cooperative treatment device and method applied to sewage treatment plant |
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| CN103834560A (en) * | 2014-03-25 | 2014-06-04 | 清华大学 | Acid producing fermentation tank for treating kitchen wastes and producing carbon source |
| CN213254173U (en) * | 2020-06-16 | 2021-05-25 | 亳州学院 | Magnetic stirring liquid preparation tank |
| CN113019611A (en) * | 2021-04-14 | 2021-06-25 | 东莞职业技术学院 | Kitchen waste treatment device and method and storage medium |
| WO2022062616A1 (en) * | 2020-09-24 | 2022-03-31 | 北京工业大学 | Method and equipment for implementing advanced nitrogen removal and sludge reduction of old landfill leachate by using sludge fermentation carbon source |
| CN216738256U (en) * | 2021-12-10 | 2022-06-14 | 江苏峰科环保科技有限公司 | Heating device used for cooking kitchen waste slurry and having fast temperature rise |
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2022
- 2022-08-24 CN CN202211019254.9A patent/CN115488134A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834560A (en) * | 2014-03-25 | 2014-06-04 | 清华大学 | Acid producing fermentation tank for treating kitchen wastes and producing carbon source |
| CN213254173U (en) * | 2020-06-16 | 2021-05-25 | 亳州学院 | Magnetic stirring liquid preparation tank |
| WO2022062616A1 (en) * | 2020-09-24 | 2022-03-31 | 北京工业大学 | Method and equipment for implementing advanced nitrogen removal and sludge reduction of old landfill leachate by using sludge fermentation carbon source |
| CN113019611A (en) * | 2021-04-14 | 2021-06-25 | 东莞职业技术学院 | Kitchen waste treatment device and method and storage medium |
| CN216738256U (en) * | 2021-12-10 | 2022-06-14 | 江苏峰科环保科技有限公司 | Heating device used for cooking kitchen waste slurry and having fast temperature rise |
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