CN109760231B - Environment-friendly waste plastic film regeneration treatment equipment and process - Google Patents
Environment-friendly waste plastic film regeneration treatment equipment and process Download PDFInfo
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- CN109760231B CN109760231B CN201910077322.9A CN201910077322A CN109760231B CN 109760231 B CN109760231 B CN 109760231B CN 201910077322 A CN201910077322 A CN 201910077322A CN 109760231 B CN109760231 B CN 109760231B
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Filtration Of Liquid (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses an environment-friendly waste plastic film regeneration treatment device and process, wherein the device comprises a material shredding dry screen module, a crushed aggregates cleaning module, a powerful decontamination device, a regeneration treatment module and an environment-friendly treatment module; the regeneration treatment module comprises a regeneration granulation module and a slurry filtering module; the environment-friendly treatment module comprises a sewage treatment module and an exhaust gas treatment module; the process comprises the following steps: the material is torn and decomposed into crushed aggregates by the material tearing dry sieve module; putting crushed aggregates into an crushed aggregate cleaning module for cleaning; the powerful decontamination device separates the plastic from the adherends; the regeneration treatment modules respectively carry out recovery treatment; the sewage generated by the powerful decontamination device is sequentially conveyed to a sewage precipitation module and a sewage treatment module; the waste gas treatment module is used for purifying the waste gas generated by the regeneration granulation module; and recycling the treated clean water. The invention not only can recycle the paper-plastic material, but also can not produce secondary pollution, and is more environment-friendly.
Description
Technical Field
The invention relates to the field of recycling and environmental protection of resource regenerated nonmetallic material wastes, in particular to environment-friendly waste plastic film regeneration treatment equipment and technology.
Background
The recycling of waste plastics plays a role in the field of comprehensive utilization of resource recovery and recycling, wherein the plastic film has a large proportion. Removal of plastic film contaminants to be regenerated is an indispensable important element of regeneration. The plastic film has wide application, and the film thickness is less than or equal to 0.3mm; common garbage bags, paper-plastic composite bags (coated paper), agricultural films, packaging films, express bags, edible fungus nutrition bags and the like are not enumerated; the pollutants comprise residues used in the front section, pollutants on the surface of the back transportation and recovery process, wood fiber composite with paper, used straws and soil for planting and breeding, self-adhesive paper labels and the like.
The existing paper-plastic composite material regeneration treatment technology has the following defects that the combination degree of the treatment process flow and sewage and waste gas purification treatment is not high, and the paper-plastic separation effect is generally achieved.
Disclosure of Invention
The invention aims to overcome the problems, and provides an environment-friendly waste plastic film regeneration treatment device which can recycle and treat paper-plastic composite materials, does not generate secondary pollution and is more environment-friendly.
Another object of the present invention is to provide a process of an environment-friendly waste plastic film recycling apparatus.
The aim of the invention is achieved by the following technical scheme:
An environment-friendly waste plastic film regeneration treatment device comprises a material shredding and drying screen module for shredding and drying materials, a material cleaning module for cleaning and removing impurities from crushed materials after shredding and drying screens, a powerful decontamination device for separating plastics and adherents, a regeneration treatment module for carrying out regeneration treatment on the separated materials, and an environment-friendly treatment module for treating pollutants generated in the material recycling treatment process;
wherein the material shredding dry screen module, the crushed aggregates cleaning module and the powerful decontamination device are connected in sequence; the regeneration treatment module comprises a regeneration granulation module for carrying out regeneration treatment on the plastics separated by the powerful decontamination device and a slurry filtering module for filtering the slurry separated by the powerful decontamination device;
The environment-friendly treatment module comprises a sewage treatment module for treating sewage generated by the crushed aggregates cleaning module and sewage generated by the powerful decontamination device, and an exhaust gas treatment module for treating exhaust gas generated by the regeneration granulation module; the sewage generated by the powerful decontamination device comprises sewage separated by the powerful decontamination device and separated by the plastic before entering the regeneration granulation module, and sewage generated by the slurry filtering module, wherein the two types of sewage are pretreated by the sewage precipitation module and then enter the sewage treatment module for treatment, and clear water obtained after the treatment of the sewage treatment module is conveyed to the crushed aggregates cleaning module or/and the powerful decontamination device for repeated use.
According to a preferred scheme, a water adding crushing module is further arranged between the material shredding dry screen module and the crushed aggregates cleaning module.
In a preferred embodiment of the present invention, an oil and slag removal module is disposed between the crushed aggregates cleaning module and the sewage treatment module, and the oil and slag removal module includes a cleaning tank, a slag discharging device disposed in the cleaning tank for discharging the sediments and the scum out of the cleaning tank, an oil discharging device for discharging the oil in the sewage out of the cleaning tank, and a water discharging device for discharging the treated sewage out of the cleaning tank, wherein the cleaning tank is divided into an oil and slag removal area and a water discharging area along a flow direction of the sewage, and a third water inlet is disposed at one end of the cleaning tank, and is communicated with the oil and slag removal area; a partition piece is arranged between the oil removal and slag removal area and the drainage area, the partition piece comprises a first partition plate and a second partition plate which are vertically arranged along the sewage flowing direction, a first notch is formed in the lower end of the first partition plate, a second notch is formed in the upper end of the second partition plate, and the first notch and the second notch are communicated;
the deslagging device, the oil discharging device and the drainage device are sequentially arranged along the flowing direction of sewage, wherein the deslagging device and the oil discharging device are arranged in the oil removing deslagging area; the drainage device is arranged in the drainage area.
Preferably, the upper end of the first partition plate is higher than the maximum water level of the sewage in the washing tank.
Preferably, the cleaning tank is further provided with a sand settling area between the third water inlet and the oil removal deslagging area, the sand settling area is communicated with the third water inlet, a third partition plate is arranged between the sand settling area and the oil removal deslagging area, and the third partition plate is vertically arranged.
Preferably, the height of the third partition plate is identical to the height of the third water inlet.
Preferably, the slag discharging device is a mechanical grid sewage draining machine and is used for blocking the scum and the sediment and sending the scum and the sediment out of the cleaning tank.
Preferably, the oil discharging device comprises a steel belt oil scraping machine.
Preferably, the water draining device comprises a pump and a water draining pipe, wherein the pump is arranged in a water draining area of the cleaning tank and is communicated with one end of the water draining pipe, and the other end of the water draining pipe is communicated with the outside.
Preferably, the oil discharging device further comprises a cloth bag oil removing device, the cleaning pool is further provided with an oil re-separation area at a position corresponding to the cloth bag oil removing device, and the oil re-separation area is separated from the drainage area through a fourth partition plate; the water inlet end of the cloth bag deoiling device is communicated with the drain pipe, and the water outlet end of the cloth bag deoiling device is communicated with the oil re-separation area.
Further, the height of the fourth partition is greater than the maximum height of the sewage in the washing tank.
In a preferred scheme of the invention, a dehydration module for removing sewage in the material is arranged between the crushed aggregates cleaning module and the powerful decontamination device, and a first regulating tank is arranged between the dehydration module and the sewage treatment module; the sewage generated in the dehydration module and the sewage generated in the oil removal and slag separation module firstly enter the first regulating tank and then enter the sewage treatment module.
In a preferred scheme of the invention, the powerful decontamination device comprises an outer cylinder, a rotating shaft arranged in the outer cylinder and a driving device for driving the rotating shaft to rotate; the outer surface of the rotating shaft is provided with a plurality of protruding teeth, each tooth extends along the axial direction of the rotating shaft, and the plurality of teeth are distributed along the circumferential direction of the rotating shaft; the outer cylinder is divided into an upper semicircular area and a lower semicircular area at a semicircular position in the horizontal direction, and the upper semicircular area is provided with a plurality of first water inlets; drain holes are uniformly distributed on the lower semicircular area; the inner wall of the outer cylinder is provided with protruding teeth, gaps are reserved between the teeth on the rotating shaft and the teeth on the outer cylinder, and the teeth on the outer cylinder are shaped like Laifu wires; along the conveying direction of the materials, a feeding port is arranged above the front end of the outer cylinder, and a plastic film discharging port is arranged below the rear end of the outer cylinder.
In a preferred embodiment of the present invention, the slurry filtering module is one or more of a vibrating screen, a filter screen, a plate-and-frame filter press, and a belt filter press, and is disposed below the drain hole.
In a preferred embodiment of the present invention, the plastic film discharge opening is provided at a distal end of the outer tube, the plurality of water discharge holes are provided at a front end of the outer tube, and the plastic film discharge opening is provided at a rear end of the outer tube.
In a preferred embodiment of the present invention, the plurality of first water inlets are provided at an upper end of the outer tube along an axial direction of the outer tube.
In a preferred embodiment of the present invention, the driving device includes a separate driving motor and a synchronous transmission mechanism, wherein the rotating shaft is rotatably connected to the outer cylinder through a transmission shaft, and a bearing is disposed on the outer cylinder at a position contacting the transmission shaft; the synchronous transmission mechanism comprises a driving synchronous wheel, a driven synchronous wheel and a synchronous belt, wherein the driving synchronous wheel is arranged on a main shaft of the separation driving motor, the driven synchronous wheel is arranged at a position, extending out of the outer cylinder, in the transmission shaft, and the synchronous belt surrounds the driving synchronous wheel and the driven synchronous wheel.
According to a preferred scheme of the invention, a funnel-shaped collecting hopper is further arranged on the outer wall of the outer cylinder, and the lower end of the funnel-shaped collecting hopper is communicated with the feeding port; the upper end of the funnel-shaped collecting port is communicated with the drain hole on the lower semicircular area, and the lower end of the funnel-shaped collecting port is communicated with the feed port of the slurry filtering module.
The invention is characterized in that the sewage precipitation module comprises an administration mechanism for administering the medicament, a mixing area for mixing the medicament with the sewage, a coagulation area for coagulating the medicament with impurities in the sewage, a precipitation area for precipitating flocculate, a water collecting area for collecting supernatant effluent and the like; is arranged in a frame consistent with the external dimension of the container; the mixing zone comprises a medicine mixing tank and a turbulent stirring mechanism arranged in the medicine mixing tank, wherein a second water inlet used for leading sewage into the medicine mixing tank and a water outlet used for leading sewage mixed with the medicament to the coagulation zone are arranged in the medicine mixing tank; the second water inlet is arranged at the upper end of the side wall of the medicine mixing tank and is tangential to the inner wall of the medicine mixing tank; the bottom of the sedimentation zone is provided with a discharge outlet for discharging sediment; the medicine mixing tank, the coagulation area, the sedimentation area and the water collecting area are sequentially connected along the water flow direction; the dosing mechanism is arranged above the medicine mixing tank.
In a preferred embodiment of the present invention, the administration mechanism is a quantitative feeding mechanism, and a weight meter or a volume meter is provided. Because the medicines are classified into different types and have different forms, such as liquid, powder and the like, different quantitative feeding forms are selected according to the selected medicine form: the powder medicament should use the quantitative feeding mechanism with weight meter, the liquid medicament should use the quantitative feeding mechanism with volume meter.
In a preferred embodiment of the present invention, the mixing zone includes a medicine dissolving zone and a medicine mixing zone; the two medicine mixing tanks are respectively a first medicine mixing tank and a second medicine mixing tank, the inner cavity of the first medicine mixing tank forms the medicine dissolving area, and the inner cavity of the second medicine mixing tank forms the medicine mixing area;
The second water inlet is arranged on the first medicine mixing tank, and the water outlet is arranged on the second medicine mixing tank; an intermediate channel which is communicated with each other is arranged between the bottoms of the two medicine mixing tanks; the dosing mechanism is arranged above the first medicine mixing tank. Through the structure, sewage enters from the second water inlet on the first medicine mixing tank, enters into the other medicine mixing tank from the middle channel, and finally flows to the coagulation area from the water outlet of the second medicine mixing tank; in the process, the mixing time of the sewage and the medicament can be prolonged, so that the sewage and the medicament are mixed more fully, and impurities are quickly and efficiently condensed; in addition, the serial flow structure enables sewage flowing into the mixing area to flow out completely, and the existence of dead flowing angles is avoided.
According to a preferred scheme of the invention, the turbulent stirring mechanism comprises a turbulent plate and a turbulent driving mechanism for driving the turbulent plate to rotate, the turbulent driving mechanism comprises a turbulent driving motor and a belt synchronous assembly, the belt synchronous assembly comprises an intermediate connecting shaft, a belt wheel and a belt wound between the belt wheels, the belt wheel comprises a driving belt wheel and a driven belt wheel, and the driving belt wheel is arranged on an output shaft of the turbulent driving motor; the upper end of the intermediate connecting shaft is fixedly connected with the driven belt wheel, and the lower end of the intermediate connecting shaft extends into the medicine mixing tank; the spoiler is transversely fixed on the middle connecting shaft.
Preferably, the bottom end of the intermediate connecting shaft is rotatably connected to a fixed connecting seat fixed on the inner wall of the medicine mixing tank, so that the spoiler can be ensured to stably rotate around the intermediate connecting shaft without shaking.
Preferably, the belt is wound between a driving belt wheel of the turbulence driving motor and two driven belt wheels respectively positioned on intermediate connecting shafts in the two medicine mixing tanks; the diameter of the driven pulley positioned in the medicine dissolving area is smaller than that of the driven pulley positioned in the medicine mixing area; therefore, a turbulent flow driving motor can be commonly used, and under the driving of the driving wheel, the rotation speed of the turbulent flow plate positioned in the medicine dissolving area is faster than that of the turbulent flow plate positioned in the medicine mixing area, so that the medicines are fully dissolved in sewage and then fully mixed.
In a preferred scheme of the invention, two parallel coagulation channels are arranged in the coagulation zone, and the coagulation channels are a first coagulation channel and a second coagulation channel respectively; the head end of the first coagulation channel is connected with the water outlet, and the tail end of the first coagulation channel is connected with the tail end of the second coagulation channel; the head end of the second coagulation channel is communicated with the sedimentation zone. Through the curved coagulation channel, the water becomes slowly turbulent, so that impurities in the sewage are sufficiently coagulated to remove the impurities.
According to a preferred scheme of the invention, a water distribution area is arranged between the coagulation area and the precipitation area, and a vertically arranged water distribution plate is arranged in the water distribution area; the water distribution plate is provided with a plurality of water distribution holes which are transversely and uniformly arranged. When the water distribution holes are formed, sewage with condensate entering the precipitation zone can be split into a plurality of small flat and uniform water flows so as to be settled.
Preferably, the water distribution holes are arranged in two rows and staggered up and down, so that the number of the water distribution holes can be increased, and the structural strength of the position of the water distribution plate provided with the water distribution holes is ensured.
In a preferred embodiment of the present invention, a honeycomb inclined tube is disposed in the precipitation zone to improve precipitation efficiency.
In a preferred scheme of the invention, two collecting areas are arranged at the middle bottom of the sedimentation area; the bottoms of the medicine mixing tank, the coagulation area and the collection area are respectively provided with a discharge outlet through which condensate generated in the flowing process of sewage can be discharged.
The lower ends of the collecting area and the coagulation area are of inverted triangle structures; the outlet at the bottom of the medicine mixing tank is arranged on the middle channel. So that the agglomerates can be automatically packed together for later disposal.
In a preferred embodiment of the invention, an overflow weir plate is arranged between the sedimentation zone and the water collection zone by a lifting structure, and the top of the overflow weir plate is a tooth-shaped overflow part formed by a plurality of teeth which are arranged in a straight line.
In a preferred scheme of the invention, the waste gas treatment module comprises a waste gas absorption condensation module and a waste gas purification module, wherein the waste gas absorption condensation module comprises an absorption condensation tank, the inner cavity of the absorption condensation tank forms a condensation chamber, the lower end of the condensation chamber is provided with a waste gas inlet and a gas distribution pipe, and the upper end of the condensation chamber is provided with a waste gas outlet; the cooling coil for cooling is arranged in the condensing chamber, the solution supplementing inlet is arranged on the absorption condensing tank, and the solution in the condensing chamber and the waste gas to be treated are subjected to contact condensation and gas washing treatment.
Preferably, the absorption condensing tank is provided with an overflow port, the solution is conveyed to the condensing chamber by a pump, the conveying pipeline of the solution is provided with a jet device for sucking and mixing waste gas to be treated, the tail end of the conveying pipeline of the solution is connected with a gas distribution pipe in the condensing chamber, and the gas inlet of the gas distribution pipe forms the solution supplementing inlet. During operation, the solution is accelerated by a pump, and the waste gas to be treated is sucked and mixed by an ejector; and enters the condenser through a gas distribution pipe at the bottom of the condenser.
In a preferred scheme of the invention, the upper part of the condensing chamber is provided with a solution supply pipe for spraying solution, and the solution sprayed by the solution supply pipe is dispersed in the tank and fully and directly contacts with waste gas to be treated from bottom to top for cooling and scrubbing.
Preferably, a packing or a column plate for increasing the contact opportunity of the gas and the liquid is arranged in the condensation chamber, so that a more efficient treatment effect can be achieved.
Preferably, the solution is stored in a regulating reservoir provided with a regulating water outlet.
Preferably, the concentration on-line detection and distribution system is arranged in the adjusting water tank and comprises a concentration on-line detection probe, a controller and a dispensing device, wherein the concentration on-line detection probe is arranged in the adjusting water tank and is connected with a signal input end of the controller, and the dispensing device is connected with a signal output end of the controller.
Preferably, the exhaust gas outlet is provided at the top of the cooling chamber.
Preferably, a gas-liquid separation device is arranged between the solution level in the absorption condensing tank and the exhaust gas outlet. The gas-liquid separation device is composed of demisting filler, a group plate and the like, and can achieve more efficient treatment effect by arranging the gas-liquid separation device.
The invention relates to a preferable scheme, wherein the sewage treatment module comprises a sewage regulating tank, a biochemical treatment device, a precipitation filtration device and an activated sludge regulating and distributing tank, wherein the sewage water inlet end of the sewage regulating tank introduces sewage through a pipeline, the sewage water outlet end of the sewage regulating tank is connected with the sewage water inlet end of the biochemical treatment device through a pipeline, and the activated sludge inlet end of the activated sludge regulating and distributing tank is connected with the activated sludge outlet end of the precipitation filtration device through a pipeline; the clear water discharge end of the precipitation filtering device is connected with the clear water inlet end of the recycling adjusting tank through a pipeline.
Preferably, the sewage regulating tank comprises a sewage buffer tank and a preaeration tank communicated with the sewage buffer tank through a pipeline, wherein a filter screen is arranged on the sewage buffer tank, activated sludge is arranged at the bottom of the preaeration tank, and an exhaust gas outlet of the exhaust gas purifying module is communicated with the preaeration tank through a gas transmission pipe.
The waste gas purification module comprises a biological film absorption tower, a water vapor separation device and an active carbon adsorption device, wherein an air inlet for waste gas to enter is formed in the biological film absorption tower, the top of the biological film absorption tower is connected with a sediment discharge end in a sediment filtering device through a pipeline, and an active sludge discharge outlet at the bottom of the biological film absorption tower is connected with an active sludge inlet end of a biochemical treatment device through a pipeline; the air inlet of the water-steam separation device is connected with the air outlet of the biomembrane absorption tower through a pipeline, and the air outlet of the water-steam separation device is connected with the air inlet of the activated carbon absorption device through a pipeline.
Through the structure, not only can the sediment with activity generated in the sewage treatment module be used in the biological membrane absorption tower, but also clean air generated in the waste gas purification module can be used in the sewage treatment module, and the sediment and the clean air have a co-cooperation relationship, and the respective products are used in the treatment process of the other side, so that the environmental protection performance is better.
Preferably, the pipeline between the sewage buffer tank and the preaeration tank is in an n shape. Therefore, impurities in the sewage buffer tank can be effectively prevented from entering the preaeration tank through the pipeline, and the principle is as follows: the sewage is filtered by the filter screen from top to bottom and then the impurities in the sewage gradually subsides, and the sewage enters the preaeration tank, so that the sewage firstly reaches the lowest end of the n-shaped pipeline positioned on one side of the sewage buffer tank, then flows upwards along the pipeline and flows transversely, and then is discharged from the lower end of the pipeline positioned on one side of the preaeration tank to enter the preaeration tank.
In a preferred scheme of the invention, a gas collecting hood is arranged above the biochemical treatment device, and one end of the gas collecting hood is connected with a gas inlet on the biomembrane absorption tower through a gas pipe.
In a preferred embodiment of the present invention, the biochemical treatment devices and the biological film treatment devices are multiple groups, and the multiple groups of biochemical treatment devices or the multiple groups of biological film treatment devices are arranged in parallel. When the sewage treatment device works, the biochemical treatment devices and the waste gas purification modules can simultaneously carry out the treatment tasks of multiple groups of sewage and waste gas, so that the sewage treatment device is suitable for the requirements of large-scale sewage and waste gas treatment.
A process applied to the environment-friendly waste plastic film regeneration treatment equipment comprises the following steps:
(1) Placing the material to be treated into a material shredding and dry sieving module, and shredding and decomposing the material shredding and dry sieving module into small-volume crushed aggregates;
(2) Putting crushed aggregates into a crushed aggregate cleaning module, and cleaning materials by the crushed aggregate cleaning module; removing the adhering residue;
(3) The cleaned material enters a powerful decontamination device, the powerful decontamination device separates plastic from paper, and a slurry filtering module and a regeneration granulating module are used for respectively recycling the material and the plastic which are easy to form slurry;
(4) The crushed aggregates cleaning module in the step (2) is conveyed into a sewage treatment module through a pipeline;
(5) The sewage generated in the slurry filtering module and the regeneration granulating module in the step (3) is led to a sewage precipitation module and then led to a sewage treatment module;
(6) The waste gas generated in the extrusion granulation process of the regeneration granulation module in the step (3) is led into a waste gas treatment module, and the waste gas treatment module carries out purification treatment to reach the emission standard;
(7) And recycling clear water obtained after the sewage treatment module is treated into the crushed aggregates cleaning module and/or the powerful decontamination device through a pipeline.
In the step (1), the material shredding and dry sieving module comprises a shredding module and a dry sieving module, wherein the shredding module tears and breaks the incoming material into small crushed aggregates, and the dry sieving module performs dry sieving; the material after the dry screening is further crushed by a water adding crushing module.
And after the material shredding and dry sieving module tears and decomposes the recovered material, the crushed aggregates are dry-sieved by the dry sieving device, and impurities are removed by sieving.
In a preferred embodiment of the present invention, in the step (3), the separation method of the powerful decontamination device comprises: after being infiltrated, the material to be treated is fed into the gap between the outer cylinder with the drain hole and the toothed object and the rotating shaft with the toothed object from the feed inlet, and rotates at a high speed along with the rotating shaft with the toothed object, and the material is repeatedly rubbed by the relative motion of the toothed object of the outer cylinder and the toothed object of the rotating shaft, so that the substances which are adhered to the plastic film and are easy to form slurry are all rubbed into slurry, and the plastic film is not easy to break because of being easy to deform and shearing force to the plastic film is not formed in the rubbing process; injecting a large amount of cleaning water into the outer cylinder through a first water inlet on the outer cylinder, taking away the slurry by water flow, and draining Kong Daizou through a lower semicircular area of the outer cylinder; the plastic film is pushed to the plastic film discharging port of the lower semicircle area of the outer barrel to be discharged due to the Laifu line structure of the tooth-shaped object at the inner side of the outer barrel; separation of the plastic film from the adhesive mass which is liable to form a slurry is achieved.
In the step (4), the sewage generated by the crushed aggregates cleaning module is firstly led into the oil and slag removal module and then is conveyed to the sewage treatment module; the processing method of the oil and slag removal module comprises the following steps: after sewage enters the cleaning pool, sediment with higher density than water is deposited at the bottom of the cleaning pool, and oil quality and scum with lower density than water float on the water surface; the scum, sediment and oil in the sewage move into the slag discharging device along with the sewage, the sewage and the oil in the sewage pass through the filtering holes of the slag discharging device to continue to move forwards, the scum and sediment in the sewage cannot pass through the filtering holes of the slag discharging device, and then the scum and sediment are discharged out of the cleaning pool by the slag discharging device; the oil quality in the sewage moves into an oil discharge device along with the sewage, and the oil discharge device discharges the oil quality to the outside of the cleaning pool; the sewage continues to move to the drainage area, and is conveyed to the sewage precipitation module by the drainage device.
In a preferred embodiment of the present invention, in the step (5), the treatment method of the sewage precipitation module comprises: introducing sewage into a medicine mixing tank, and adding a medicament into the medicine mixing tank, so that the sewage and the medicament are fully mixed, then entering a coagulation area, combining and condensing the sewage and the medicament in the coagulation area to form flocks, connecting adjacent flocks to form flocks with net capturing effect on impurity suspended matters in water, then entering a sedimentation area, settling the flocks downwards in the sedimentation area, selecting a machine to discharge, collecting separated clear water in a water collecting area, and recycling the clear water into a crushed aggregates cleaning module and a powerful decontamination device by a pipeline in the water collecting area.
In the step (4), the sewage is conveyed into a sewage regulating tank, and is pre-aerated and mixed with activated sludge and sewage to be treated, so that homogenization is realized; pumping the sewage after pre-aeration into a biochemical treatment device to realize aerobic biochemical treatment, precipitation and facultative anaerobic biochemical treatment; and (5) feeding the clear water obtained after precipitation and filtration into a recycling regulating tank.
In a preferred embodiment of the present invention, in step (6), steam and exhaust gas generated by the regeneration granulation module during extrusion granulation are led to the exhaust gas absorption condensation module, and the exhaust gas absorption condensation module pretreats the exhaust gas: is sucked into the condenser by power; the refrigerant flows in a cooling coil pipe for cooling in the condenser, and takes away heat brought by the waste gas in a non-direct contact mode with the waste gas; the solution in the condenser is directly contacted and mixed with the waste gas, and the waste gas is subjected to gas washing treatment in a contact condensation mode with the waste gas to be treated, so that the pollutant content of the waste gas is reduced.
Preferably, the exhaust gas treated in the exhaust gas absorption condensation module is led into the exhaust gas purification module; introducing activated sludge into a biomembrane absorption tower, and forming a biomembrane on the surface of a filler arranged in the tower; the waste gas is fully contacted with the biological film through the biological film absorption tower, and the biological film effectively absorbs organic matters in the waste gas; the absorbed waste gas is subjected to water removal through a water-gas separation device, and is adsorbed by activated carbon and then discharged after reaching the standard.
Further, leading active sediment generated by a sediment filtering device in the sewage treatment module into a biological membrane absorption tower; the activated sludge discharged from the bottom of the biomembrane absorption tower and the water removed by the water-gas separation device are returned to the biochemical treatment device of the sewage treatment module for treatment.
Compared with the prior art, the invention has the following beneficial effects:
1. the regeneration treatment equipment of the invention not only can recycle and recycle substances which are easy to form slurry, such as plastic films, papers and the like, but also can purify sewage and waste gas generated in the treatment process, thereby being more environment-friendly.
2. The function units of the process flow of the invention have clear, smooth and reasonable actions; the method is beneficial to process implementation, reduces the transportation energy consumption of materials among units, reduces the compactness of complete equipment and saves the working space; automation of convenient control; through subsequent pulp recovery and other procedures, the comprehensive utilization of resources can be realized to the maximum extent.
3. The process flow of the invention considers the main process and the environmental protection measures at the same time; the diffusion process water of pollutants such as residues, adherents and the like is effectively reduced through procedures such as shredding, bag breaking, dry screening and the like; reduces the sewage treatment difficulty and the treatment cost, and is convenient for recycling reclaimed water.
Drawings
FIG. 1 is a process flow diagram of an environment-friendly waste plastic film recycling treatment device in the invention.
Fig. 2 is a schematic structural view of the oil and slag removal module in fig. 1.
Fig. 3 is a schematic view of the powerful decontamination device and slurry filtration module of fig. 1.
Fig. 4 is an exploded view of the power decontamination device of fig. 1, with the drive device and the collection hopper hidden.
Fig. 5 is a schematic diagram of a front view of the sewage precipitation module of fig. 1.
Fig. 6 is a schematic top view of the sewage precipitation module of fig. 1.
Fig. 7 is a schematic side view of the drug-dissolving and mixing regions of fig. 5.
FIG. 8 is a side view of the water distribution plate of FIG. 5
FIG. 9 is a side view of the overflow weir plate of FIG. 5
Fig. 10 is a schematic diagram of an embodiment of the exhaust absorption condensing module of fig. 1.
Fig. 11 is a schematic diagram of another embodiment of the exhaust absorption condensing module of fig. 1.
Fig. 12 is a process flow diagram of the co-operation of the exhaust gas purification module and the sewage treatment module of fig. 1.
Detailed Description
In order that those skilled in the art will well understand the technical solutions of the present invention, the following describes the present invention further with reference to examples and drawings, but the embodiments of the present invention are not limited thereto.
Example 1
Referring to fig. 1, the recycling apparatus for waste plastic film in this embodiment includes a material shredding and drying screen module for shredding and drying the recovered material, a scrap cleaning module for cleaning and removing impurities from the shredded and dried scraps, a powerful decontamination device for separating the adherends such as plastic and paper which are liable to be pasty, a recycling module for recycling the separated material, and an environment-friendly processing module for processing the pollutants generated during the recycling process of the material; wherein the material shredding dry screen module, the crushed aggregates cleaning module and the powerful decontamination device are connected in sequence; the regeneration processing module comprises a regeneration granulation module for performing regeneration processing on the plastics separated by the powerful decontamination device and a slurry filtering module 11b for filtering substances which are easy to form slurry, such as paper and the like separated by the powerful decontamination device; the environment-friendly treatment module comprises a sewage treatment module for treating sewage generated by the crushed aggregates cleaning module and sewage generated by the powerful decontamination device, and an exhaust gas treatment module for treating exhaust gas generated by the regeneration granulation module; the sewage generated by the powerful decontamination device comprises sewage separated by the powerful decontamination device and separated by the plastic before entering the regeneration granulation module, and sewage generated by the slurry filtering module 11b, wherein the two types of sewage are pretreated by the sewage precipitation module and then enter the sewage treatment module for treatment, clear water obtained after the treatment of the sewage treatment module is conveyed to the crushed aggregates cleaning module or/and the powerful decontamination device for repeated use, and substances, such as paper, which are easy to form slurry are further recycled.
Referring to fig. 1, a water adding crushing module is further arranged between the material shredding dry screen module and the crushed aggregates cleaning module. The sieved material is further crushed by a water crusher; the water is added for crushing, and meanwhile, the friction is carried out on the surface of the material, so that the separation effect of the surface adherends is promoted. The water in the water adding crushing module can be recycled water treated by the sewage treatment module.
Referring to fig. 1-2, an oil and slag removal module is arranged between the crushed aggregates cleaning module and the sewage treatment module, the oil and slag removal module comprises a cleaning tank 1a, a slag discharging device 2a arranged in the cleaning tank 1a and used for discharging sediments out of the cleaning tank 1a, an oil discharging device 3a used for discharging oil in sewage out of the cleaning tank 1a, and a water discharging device used for discharging treated sewage out of the cleaning tank 1a, wherein the cleaning tank 1a is divided into an oil and slag removal area 1-2a and a water discharging area 1-3a along the flowing direction of the sewage, one end of the cleaning tank 1a is provided with a third water inlet 1-1a, and the third water inlet 1-1a is communicated with the oil and slag removal area 1-2 a; a partition piece is arranged between the oil removal and slag removal area 1-2a and the drainage area 1-3a, the partition piece comprises a first partition plate 7a and a second partition plate 8a which are vertically arranged along the sewage flowing direction, a first notch is formed in the lower end of the first partition plate 7a, a second notch is formed in the upper end of the second partition plate 8a, and the first notch and the second notch are communicated.
The deslagging device 2a, the oil discharging device 3a and the drainage device are sequentially arranged along the flowing direction of sewage, wherein the deslagging device 2a and the oil discharging device 3a are arranged in the oil and slag removing areas 1-2a; the drainage means are arranged in the drainage areas 1-3a.
In operation, the sewage from the crushed aggregates cleaning module enters the cleaning tank 1a through the third water inlet 1-1a in the cleaning tank 1a, and the sewage is layered in the cleaning tank 1a, wherein the sediment with a density greater than that of water is deposited at the bottom of the cleaning tank 1a, and the oil quality and the scum with a density less than that of water float on the water surface. When the scum, sediment and oil in the sewage move to the slag discharging device 2a along with the sewage, the sewage and the oil in the sewage can move forward through the filtering holes of the slag discharging device 2a, and the scum and sediment in the sewage cannot pass through the filtering holes of the slag discharging device 2a, so that the slag discharging device 2a can drive the scum and sediment to move, and the scum and sediment can be discharged out of the cleaning tank 1a.
When the oil quality in the sewage moves to the oil discharging device 3a along with the sewage, since the oil quality has a density smaller than that of the sewage, the oil quality floats on the upper surface of the sewage, and the oil quality of the portion is discharged to the outside of the washing tank 1a through the oil discharging device 3 a.
After that, the sewage continues to move to the drainage area 1-3a, and as the first partition 7a and the second partition 8a are provided between the drainage area 1-3a and the oil and slag removing area 1-2a, the sewage first enters between the first partition 7a and the second partition 8a from the first notch at the lower end of the first partition 7a, and then enters the drainage area 1-3a from the second notch at the upper end of the second partition 8 a. In this process, since the sludge in the sewage has a density greater than that of the sewage, the sludge is deposited at the bottom of the space between the first and second partition plates 7a and 8a by the gravity thereof, thereby preventing the sludge from entering the drainage areas 1 to 3a. The sewage reaching the drainage areas 1-3a is conveyed to the sewage treatment module by the drainage device.
Referring to fig. 2, the upper end of the first partition 7a is higher than the maximum level of sewage in the washing tank 1 a. The purpose is to ensure that sewage must pass through the first notch at the lower end of the first partition plate 7a and flow out of the second notch at the upper end of the second partition plate 8a, so that the sediment remained in the sewage can be deposited at the bottoms of the first partition plate 7a and the second partition plate 8a, and the sediment can be separated again.
Referring to fig. 2, the cleaning tank 1a is further provided with a sand settling zone 1-4a between the third water inlet 1-1a and the oil and slag removing zone 1-2a, the sand settling zone 1-4a is communicated with the third water inlet 1-1a, a third partition 9a is arranged between the sand settling zone 1-4a and the oil and slag removing zone 1-2a, and the third partition 9a is vertically arranged. Thus, the sewage entering from the third water inlet 1-1a can enter the sand settling zone 1-4a at first, and the density of the sediment is far greater than that of the sewage, so that the sediment can be deposited at the bottom of the sand settling zone 1-4a, and the sewage can continuously enter the oil and slag removing zone 1-2a through the sand settling zone 1-4a, so that the sediment in the sewage is separated.
Referring to fig. 2, the third partition 9a has a height equal to or smaller than that of the third water inlet 1-1a, so that it is possible to ensure that sewage smoothly enters the oil and slag removing area 1-2a, thereby avoiding that the water level of the sand settling area 1-4a is higher than that of the third water inlet 1-1a, thereby causing that the water pressure of the sand settling area 1-4a is too high to make the sewage smoothly move from the third water inlet 1-1a to the oil and slag removing area 1-2a.
Referring to fig. 2, the slag discharging device 2a is a mechanical grid sewage draining machine for blocking the dross and the sediment, and sending the dross and the sediment out of the cleaning tank 1a. The specific structure of the mechanical grid sewage draining machine can be implemented by referring to the existing mechanical grid sewage draining machines on the market.
Referring to fig. 2, the oil discharging device 3a is a steel belt oil scraper. The steel belt oil scraper can adopt the existing steel belt oil scraper in the market.
Referring to fig. 2, the drainage apparatus includes a pump 4a and a drain pipe 6a, wherein the pump 4a is installed at a drain area 1-3a of the washing tub 1a and communicates with one end of the drain pipe 6a, and the other end of the drain pipe 6a communicates with the next treatment device. Thus, the pump 4a conveys the sewage in the drainage areas 1-3a to the next treatment apparatus through the drainage pipe 6a to complete the next process.
Referring to fig. 2, the oil discharging device 3a further comprises a cloth bag oil removing device 5a, the cleaning pool 1a is further provided with an oil re-separation area 1-5a at a position corresponding to the cloth bag oil removing device 5a, and the oil re-separation area 1-5a is separated from the drainage area 1-3a by a fourth partition board 10 a; the water inlet end of the cloth bag deoiling device 5a is communicated with the drain pipe 6a, and the water outlet end of the cloth bag deoiling device 5a is communicated with the oil quality re-separation area 1-5 a. Thus, the pump 4a conveys the sewage of the drainage areas 1-3a to the cloth bag degreasing device 5a, and removes the residual oil in the sewage by the cloth bag degreasing device 5a, thereby reducing or even completely removing the oil in the sewage.
Referring to fig. 2, the height of the fourth partition plate 10a is greater than the maximum height of sewage in the washing tank 1 a. The purpose is to prevent sewage from the drainage zone 1-3a from entering the oily re-separation zone 1-5a.
In the drawings, fig. 8 is a horizontal plane.
Referring to fig. 1, a dehydration module for removing sewage in materials is arranged between the crushed aggregates cleaning module and the powerful decontamination device, and a first adjusting tank is arranged between the dehydration module and the sewage treatment module; the sewage generated in the dehydration module and the sewage generated in the oil removal and slag separation module firstly enter the first regulating tank and then enter the sewage treatment module.
Referring to fig. 3 to 4, the powerful decontamination device comprises an outer cylinder 1b, a rotating shaft 2b arranged in the outer cylinder 1b, and a driving device for driving the rotating shaft 2b to rotate; the outer surface of the rotating shaft 2 is provided with a plurality of protruding teeth 3b, each tooth 3b extends along the axial direction of the rotating shaft 2b, and the plurality of teeth 3b are distributed along the circumferential direction of the rotating shaft 2 b; the outer cylinder 1b is divided into an upper semicircular area 1-1b and a lower semicircular area 1-2b at a semicircular position in the horizontal direction, and the upper semicircular area 1-1b is provided with a plurality of first water inlets 7b; drain holes 5b are uniformly distributed on the lower semicircular area 1-2b (the drain holes 5b can be referred to as fig. 4, and each grid in fig. 4 can represent one drain hole 5 b); the inner wall of the outer cylinder 1b is provided with protruding teeth 4b, gaps are reserved between the teeth 3b on the rotating shaft 2b and the teeth 4b on the outer cylinder 1b, and the teeth 4b on the outer cylinder 1b are shaped like Laifu wires; along the conveying direction of the materials, a feeding port is arranged above the front end of the outer cylinder 1b, and a plastic film discharging port 6b is arranged below the rear end.
During operation, materials to be treated are fed into gaps between the outer cylinder 1b with the drain holes 5b and the toothed objects 4b and the rotating shaft 2b with the toothed objects 3b through the feed inlet after being soaked, and rotate along with the rotating shaft 2b with the toothed objects 3b at a high speed, the materials are subjected to powerful repeated kneading by the relative motion of the toothed objects 4b of the outer cylinder 1b and the toothed objects 3b of the rotating shaft 2b, so that the materials adhered to the plastic film, including the materials which are easy to form slurry, such as paper melted and pressed on the plastic surface, can be kneaded into slurry, and the plastic film is not easy to break because of easy deformation, and shearing force to the plastic film is not formed in the kneading process; a large amount of cleaning water is injected into the outer cylinder 1b through the first water inlet 7b on the outer cylinder 1b, and the slurry is carried away by the water flow and carried away through the water discharge holes 5b of the lower semicircular area 1-2b of the outer cylinder 1 b; the plastic film is pushed to the plastic film discharge openings 6b of the lower semicircle area 1-2b of the outer cylinder 1b to be discharged due to the Laifu line structure of the teeth 4b at the inner side of the outer cylinder 1 b; the separation of the plastic film and the adhesive is realized.
Referring to fig. 3-4, the slurry filtering module 11b is one or more of a vibrating screen or a filter screen or a plate-and-frame filter press or a belt filter press, and is disposed below the drain hole 5 b.
Referring to fig. 3 to 4, the first water inlet 7b is provided in plurality, and the plurality of first water inlets 7b are provided at an upper end of the outer tub 1b along an axial direction of the outer tub 1 b. The first water inlets 7b in this embodiment are seven.
Referring to fig. 3 to 4, the driving device comprises a separation driving motor 8b and a synchronous transmission mechanism 9b, wherein the rotating shaft 2b is rotatably connected to the outer cylinder 1b through a transmission shaft, and the outer cylinder 1b is provided with a bearing at a position contacting with the transmission shaft; the synchronous transmission mechanism 9b comprises a driving synchronous wheel, a driven synchronous wheel and a synchronous belt, wherein the driving synchronous wheel is arranged on a main shaft of the separation driving motor 8b, the driven synchronous wheel is arranged at a position, extending out of the outer cylinder 1b, in the transmission shaft, and the synchronous belt is wound on the driving synchronous wheel and the driven synchronous wheel.
Referring to fig. 3-4, a funnel-shaped collecting hopper 10b is further arranged on the outer wall of the outer barrel 1b, and the lower end of the funnel-shaped collecting hopper 10b is communicated with the feeding port.
Referring to fig. 3 to 4, the powerful decontamination apparatus further includes a water tank 12b for collecting the washing water separated by the slurry filtration module 11b, a collection tank 13b for collecting the slurry material such as pulp separated by the slurry filtration module 11b, and a water recycling device for feeding the washing water in the water tank 12b to the first water inlet 7b of the outer tub 1b, the water recycling device including a transfer pump 14b and a water pipe 15b for connecting the water tank 12b and the first water inlet 7b, wherein the transfer pump 14b is provided in the water tank 12b and communicates with the water pipe 15 b.
Referring to fig. 3 to 4, a funnel-shaped collecting port 16b is further provided on the outer wall of the outer tub 1b, the upper end of the funnel-shaped collecting port 16b is communicated with the drain hole 5b on the lower semicircular area 1-2b, and the lower end of the funnel-shaped collecting port 16b is communicated with the feed port of the slurry filtering module 11 b.
Referring to fig. 1, the wet plastics obtained from the powerful decontamination device are required to be dehydrated before entering the regeneration granulation module, the dehydrated sewage enters the sewage precipitation module for treatment, and the dry plastic film enters the regeneration granulation module for granulation treatment.
Referring to fig. 5 to 9, the sewage precipitation module includes a dosing mechanism for dosing a medicine, a mixing zone for mixing the medicine and sewage, a coagulation zone 3c for agglomerating the medicine with impurities in the sewage, a precipitation zone 5c for precipitating flocculates, and a water collecting zone 6c for collecting clear water, which are provided in a frame conforming to the external dimensions of the container; the mixing zone comprises a medicine mixing tank and a turbulent stirring mechanism arranged in the medicine mixing tank, wherein a second water inlet 7c for leading sewage into the medicine mixing tank and a water outlet 8c for leading sewage mixed with the medicament to the coagulation zone 3c are arranged in the medicine mixing tank; the second water inlet 7c is arranged at the upper end of the side wall of the medicine mixing tank and is tangential to the inner wall of the medicine mixing tank; the bottom of the sedimentation zone 5c is provided with a discharge outlet 17c for discharging sediment; along the direction of water flow, the medicine mixing tank, the coagulation zone 3c, the sedimentation zone 5c and the water collecting zone 6c are sequentially connected; the dosing mechanism is arranged above the medicine mixing tank. The working principle of the sewage precipitation module in this embodiment is: when in operation, sewage (the sewage generated by the powerful decontamination device) is connected into the medicine mixing tank from the second water inlet 7c of the medicine mixing tank, and meanwhile, the medicine is thrown into the medicine mixing tank through the medicine feeding mechanism so as to be dissolved and mixed in the sewage; the inner wall of the second water inlet 7c is tangent to the inner wall of the medicine mixing tank, so that sewage enters the tank in a mode of being tangent to the inner wall of the medicine mixing tank, and can rapidly move downwards along the inner wall in a spiral manner to form turbulence, and then the sewage is fully mixed with the medicine under the turbulence action of the turbulence stirring mechanism; after being mixed with the chemical, the wastewater enters a coagulation zone 3c, and in the coagulation zone 3c, the wastewater and the chemical are combined and coagulated to form flocks, and adjacent flocks are further combined to form flocks with net capturing effect on suspended matters (impurities) in the water; then enters a sedimentation zone 5c, in the sedimentation zone 5c, flocculates are precipitated downwards, the flocculate is discharged from the machine, and the separated clean water is collected in a water collecting zone 6 c.
The administration mechanism in this embodiment is a quantitative feeding mechanism, and is provided with a weight meter or a volume meter. Because the medicines are classified into different types and have different forms, such as liquid, powder and the like, different quantitative feeding forms are selected according to the selected medicine form: the powder medicament should use the quantitative feeding mechanism with weight meter, the liquid medicament should use the quantitative feeding mechanism with volume meter.
Referring to fig. 5-9, the mixing zone includes a drug dissolution zone 1c and a drug mixing zone 2c; the two medicine mixing tanks are respectively a first medicine mixing tank and a second medicine mixing tank, the inner cavity of the first medicine mixing tank forms the medicine dissolving area 1c, and the inner cavity of the second medicine mixing tank forms the medicine mixing area 2c; the second water inlet 7c is arranged on the first medicine mixing tank, and the water outlet 8c is arranged on the second medicine mixing tank; an intermediate channel 9c which is communicated with each other is arranged between the bottoms of the two medicine mixing tanks; the dosing mechanism is arranged above the first medicine mixing tank. Through the structure, sewage enters from the second water inlet 7c on the first medicine mixing tank, enters into the other medicine mixing tank from the middle channel 9c, and finally flows to the coagulation zone 3c from the water outlet 8c of the second medicine mixing tank; in the process, the mixing time of the sewage and the medicament can be prolonged, so that the sewage and the medicament are mixed more fully, and impurities are quickly and efficiently condensed; in addition, the serial flow structure enables sewage flowing into the mixing area to flow out completely, and the existence of dead flowing angles is avoided.
Referring to fig. 5-9, the spoiler stirring mechanism comprises a spoiler 10c and a spoiler driving mechanism for driving the spoiler 10c to rotate, the spoiler driving mechanism comprises a spoiler driving motor 11 and a belt synchronous assembly, the belt 13c synchronous assembly comprises an intermediate connecting shaft 12c, a belt pulley and a belt 13c wound between the belt pulleys, the belt pulley comprises a driving belt pulley and a driven belt pulley, and the driving belt pulley is arranged on an output shaft of the spoiler driving motor 11; the upper end of the intermediate connecting shaft 12c is fixedly connected with the driven belt wheel, and the lower end of the intermediate connecting shaft extends into the medicine mixing tank; the spoiler 10c is fastened transversely to the intermediate connecting shaft 12 c. Under the driving of the turbulence driving motor 11, the intermediate connecting shaft 12c drives the turbulence plate 10c to rotate, so that sewage can be wound and moved, and the sewage and the medicament are fully mixed.
Referring to fig. 5 to 9, the bottom end of the intermediate connecting shaft 12c is rotatably connected to the fixed connecting seat 14c, and the fixed connecting seat 14c is fixed to the inner wall of the mixing tank, so that the spoiler 10c can be ensured to stably rotate around the intermediate connecting shaft 12c without shaking.
Referring to fig. 5 to 9, the belt 13c is wound between the driving pulley of the turbulence driving motor 11 and two driven pulleys respectively positioned on the intermediate connecting shafts 12c in the two mixing tanks; the diameter of the driven pulley in the medicine dissolving area 1c is smaller than that of the driven pulley in the medicine mixing area 2 c; thus, a turbulent flow driving motor 11 can be commonly used, and under the driving of the driving wheel, the rotation speed of the turbulent plate positioned in the medicine dissolving area 1c is faster than that of the turbulent plate positioned in the medicine mixing area 2c, so that the medicines can be fully dissolved in the sewage and then fully mixed
Referring to fig. 5-9, two parallel coagulation channels are arranged in the coagulation zone 3c, and the coagulation channels are a first coagulation channel and a second coagulation channel respectively; the head end of the first coagulation channel is connected with the water outlet 8c, and the tail end of the first coagulation channel is connected with the tail end of the second coagulation channel; the head end of the second coagulation channel leads to a precipitation zone 5c. Through the curved coagulation channel, the water becomes slowly turbulent, so that impurities in the sewage are sufficiently coagulated to remove the impurities.
Referring to fig. 5-9, a water distribution area 4c is arranged between the coagulation area 3c and the precipitation area 5c, and a vertically arranged water distribution plate 15c is arranged in the water distribution area 4 c; the water distribution plate 15c is provided with a plurality of water distribution holes 15-1c which are transversely and uniformly arranged. When passing through the water distribution hole 15-1c, the sewage with condensate entering the sedimentation zone 5c can be split into a plurality of small water flows which are flat and uniform so as to be settled at rest.
Referring to fig. 5-9, the water distribution holes 15-1c are arranged in two rows and staggered up and down, so that the number of the water distribution holes 15-1c can be increased, and the structural strength of the portion of the water distribution plate 15c provided with the water distribution holes 15-1c is ensured.
Referring to fig. 5-9, a honeycomb chute 16c is provided in the settling zone 5c, which is commercially available to increase settling efficiency.
Referring to fig. 5-9, two collecting areas are arranged at the middle bottom of the sedimentation area 5 c; the bottoms of the medicine mixing tank, the coagulation zone 3c and the collecting zone are respectively provided with the discharge outlet 17c, and the condensate generated in the flowing process of the sewage can be discharged through the discharge outlet 17 c.
Referring to fig. 5-9, the lower ends of the collecting area and the coagulation area 3c are both in an inverted triangle structure; the outlet 17c at the bottom of the mixing tank is arranged in the intermediate channel 9 c. So that the agglomerates can be automatically packed together for later disposal.
Referring to fig. 5-9, an overflow weir 18c is arranged between the settling zone 5c and the water collecting zone 6c by a lifting structure, and the top of the overflow weir 18c is a tooth-shaped overflow portion formed by a plurality of teeth arranged in a straight line.
Referring to fig. 1 and 10, the exhaust gas treatment module comprises an exhaust gas absorption condensation module and an exhaust gas purification module, wherein the exhaust gas absorption condensation module comprises an absorption condensation tank 1d, the inner cavity of the absorption condensation tank 1d forms a condensation chamber, the lower end of the condensation chamber is provided with an exhaust gas inlet 2d and a gas distribution pipe 3d, the upper end of the condensation chamber is provided with an exhaust gas outlet 4d, and the exhaust gas outlet 4d is arranged at the top of the cooling chamber; the cooling coil 5d for cooling is arranged in the condensing chamber, the solution supplementing inlet is arranged on the absorption condensing tank 1d, and the solution in the condensing chamber and the waste gas to be treated are subjected to contact condensation and gas washing treatment. When the waste gas absorption condensation module works, waste gas rich in organic volatile matters, acid or alkaline and other gases and high-temperature water vapor is subjected to condensation treatment through direct contact; specifically, high-temperature waste gas is in direct contact with low-temperature solution and is fully mixed, and heat of the waste gas and entrained substances in the process are transferred into the solution through a gas-liquid interface; the refrigerant coil takes heat away in a non-contact mode; the waste gas pollutants enter the waste gas purification module to be removed, so that the dual effects of temperature reduction and harmful substance treatment are realized, part of harmful substances in the waste gas are removed, and the load of a subsequent treatment process is reduced.
An overflow port 6d is arranged on the absorption condensing tank 1d, the solution is conveyed to the condensing chamber by a pump 7-3d, a jet device 7-1d for sucking and mixing waste gas to be treated (the waste gas enters the jet device from an air inlet pipe 7-2 d) is arranged on a conveying pipeline 7d of the solution, the tail end of the conveying pipeline 7d of the solution is connected with an air distribution pipe 3d in the condensing chamber, and an air inlet of the air distribution pipe 3d forms the solution supplementing inlet. During operation, the solution is accelerated by the pump 7-3d, and the waste gas to be treated is sucked and mixed by the ejector 7-1 d; and enters the condenser through a gas distribution pipe 3d at the bottom of the condenser. And a filler or a tower plate for increasing the contact opportunity of the gas and the liquid is arranged in the condensation chamber, so that a more efficient treatment effect can be achieved. The solution is stored in a regulating water tank 8d, and a regulating water outlet 8-1d is arranged on the regulating water tank 8 d.
Referring to fig. 1 and 10, a concentration online detection and adjustment system is arranged in the adjusting water tank 8d, and comprises a concentration online detection probe 9d, a controller 10d and a dispensing device 11d, wherein the concentration online detection probe 9d is arranged in the adjusting water tank 8d and is connected with a signal input end of the controller 10d, and the dispensing device 11d is connected with a signal output end of the controller 10 d. The purpose of this arrangement is that the alkali ions in the treatment liquid are continuously consumed due to the neutralization reaction with the treatment liquid when the waste gas containing the acidic substances is subjected to the contact treatment, and the concentration online detection probe 9d transmits the concentration data to the controller 10d in real time after the online detection and distribution system is arranged, and then the controller 10d transmits the concentration data to the dispensing device 11d, so that the dispensing device 11d (consisting of a dispensing box or a dispensing tank) can supplement the concentration requirement of the solution of the adjusting water according to the pH value measured by the pH value detection device as required, so as to achieve the ideal absorption treatment effect.
Referring to fig. 1 and 10, a gas-liquid separation device 12d is provided between the solution level in the absorption condensation tank 1d and the exhaust gas outlet 4 d. The gas-liquid separation device 12d is composed of demister packing, a plate assembly, or the like, and by providing the gas-liquid separation device 12d, a more efficient treatment effect can be achieved.
Referring to fig. 1 and 12, the sewage treatment module comprises a sewage regulating tank, a biochemical treatment device, a precipitation filtration device and an activated sludge regulating and distributing tank, wherein the sewage inlet end of the sewage regulating tank introduces sewage through a pipeline, the sewage outlet end of the sewage regulating tank is connected with the sewage inlet end of the biochemical treatment device through a pipeline, and the activated sludge inlet end of the activated sludge regulating and distributing tank is connected with the activated sludge outlet end of the precipitation filtration device through a pipeline; the clear water discharge end of the precipitation filtering device is connected with the clear water inlet end of the recycling adjusting tank through a pipeline.
The sewage regulating tank comprises a sewage buffer tank and a preaeration tank communicated with the sewage buffer tank through a pipeline, wherein a filter screen is arranged on the sewage buffer tank, activated sludge is arranged at the bottom of the preaeration tank, and an exhaust gas outlet 4d of the exhaust gas purification module is communicated with the preaeration tank through a gas transmission pipe. During operation, carry sewage to the sewage buffer tank in, sewage buffer tank is arranged in filtering and impurity precipitation to the sewage that gets into in the preaeration tank earlier, utilize the filter screen to filter great volumetric solid, utilize the mode of precipitation to let sediment etc. sediment impurity subside to the bottom of the pool, after filtration and sediment's sewage reach the preaeration tank, exhaust gas vent 4d of exhaust purification module passes through the gas-supply pipe behind with preaeration tank intercommunication, and the clean air after the processing that exhaust purification module produced reaches the preaeration tank after carrying through the gas-supply pipe, because contain oxygen in the waste gas, can be for the supply oxygen of the activated sludge in the preaeration tank for sewage carries out the decomposition preliminary treatment of microorganism earlier before getting into biochemical treatment device, on the one hand can improve the treatment effect of sewage, on the other hand utilizes the clean air that exhaust purification module produced to the activated sludge oxygen suppliment again, has both reduced the use of relevant oxygen supply equipment, can filter the waste gas again simultaneously, consequently has design benefit, low treatment cost, advantage that treatment effect is good.
Referring to fig. 1 and 12, the exhaust gas purification module comprises a biological film absorption tower, a water vapor separation device and an activated carbon adsorption device, wherein an air inlet for the exhaust gas to enter is formed in the biological film absorption tower, the top of the biological film absorption tower is connected with a sediment discharge end in a sediment filtering device through a pipeline, and an activated sludge discharge outlet at the bottom of the biological film absorption tower is connected with an activated sludge inlet end of a biochemical treatment device through a pipeline; the air inlet of the water-steam separation device is connected with the air outlet of the biomembrane absorption tower through a pipeline, and the air outlet of the water-steam separation device is connected with the air inlet of the activated carbon absorption device through a pipeline. When the device works, activated sludge in the activated sludge regulating and distributing tank enters a biological film absorption tower, and a biological film is formed on the surface of a filler arranged in the tower; the waste gas is fully contacted with the biological film through the biological film absorption tower, and the biological film effectively absorbs organic matters in the waste gas; the activated sludge discharged from the bottom of the biomembrane absorption tower returns to the biochemical treatment device for treatment; the absorbed waste gas is subjected to water removal through a water-gas separation device, and is adsorbed by activated carbon and then discharged after reaching the standard.
Through the structure, not only can the sediment with activity generated in the sewage treatment module be used in the biological membrane absorption tower, but also clean air generated in the waste gas purification module can be used in the sewage treatment module, and the sediment and the clean air have a co-cooperation relationship, and the respective products are used in the treatment process of the other side, so that the environmental protection performance is better.
Referring to fig. 1 and 12, the pipeline between the sewage buffer tank and the preaeration tank is in an n shape. Therefore, impurities in the sewage buffer tank can be effectively prevented from entering the preaeration tank through the pipeline, and the principle is as follows: the sewage is filtered by the filter screen from top to bottom and then the impurities in the sewage gradually subsides, and the sewage enters the preaeration tank, so that the sewage firstly reaches the lowest end of the n-shaped pipeline positioned on one side of the sewage buffer tank, then flows upwards along the pipeline and flows transversely, and then is discharged from the lower end of the pipeline positioned on one side of the preaeration tank to enter the preaeration tank.
Referring to fig. 1 and 12, a gas collecting hood is arranged above the biochemical treatment device, and one end of the gas collecting hood is connected with a gas inlet on the biomembrane absorption tower through a gas pipe. The purpose of this arrangement is that when the biochemical treatment device is treating sewage, the microorganism decomposes the organic matter and produces waste gas, and this waste gas can enter into the waste gas purification module through gas-supply pipe and air inlet and be handled in unison to need not add other waste gas purification module.
Referring to fig. 1 and 12, the biochemical treatment devices and the biological film treatment devices are arranged in a parallel manner among the biochemical treatment devices or among the biological film treatment devices. When the sewage treatment device works, the biochemical treatment devices and the waste gas purification modules can simultaneously carry out the treatment tasks of multiple groups of sewage and waste gas, so that the sewage treatment device is suitable for the requirements of large-scale sewage and waste gas treatment.
Referring to fig. 1, the above-mentioned environmental protection type waste plastic film regeneration treatment equipment has the following working principle:
During operation, the materials to be treated are placed in a material shredding and drying screen module, the materials are shredded and decomposed into small-volume crushed aggregates by the material shredding and drying screen module, the crushed aggregates are further crushed by the water adding crushing module, then enter the crushed aggregates cleaning module (see the cleaning method of the flexible fragments and the special rinsing tank disclosed by the authorized publication number CN 104148326B), and the materials are fully unfolded by the crushed aggregates cleaning module, so that impurities (stones, sand, wood blocks and the like) mixed in the materials are cleaned, residues adhered to the surfaces of the materials are removed, and the purity of the materials easy to form slurry such as recycled paper is improved; the washed material then enters a powerful decontamination device, and the plastic, paper and other substances which are easy to form slurry are separated by the powerful decontamination device, so that the materials are respectively recycled and utilized by the regeneration granulation module and the slurry filtering module 11 b.
Further, after separating the substances easily slurried such as paper from the plastic, the washing water in the pulp is filtered out by the pulp filtering module 11b, thereby obtaining pulp of high purity. And the plastic is dehydrated firstly, and then extruded and granulated by a regeneration granulating module so as to realize regeneration of the plastic. Wherein, in the water that is deviate from in washing water after filtering and the plastics, carry a small amount of short fiber and impurity, lead into the sewage precipitation module at first, carry out sedimentation treatment (deposit recoverable use such as clamp plate) by sewage precipitation module, and then lead into the sewage treatment module with the washing water in the crushed aggregates wiper mechanism (collectively sewage), carry out thorough processing to sewage by sewage treatment module, then with the clear water recycling after the processing in crushed aggregates wiper module and the powerful decontamination plant. In addition, a large amount of water vapor and volatile organic waste gas can be generated in the regeneration granulation process, and then the waste gas treatment module is used for carrying out innocent treatment, and then the waste gas is discharged after reaching the standard. The treatment equipment is suitable for the regeneration treatment of paper-plastic composite materials such as woven bags, beverage boxes, garbage bags, cartons wound with sealing tapes, papermaking tailings, edible fungus nutrition bags and the like, and ensures that the treatment process does not produce secondary pollution. The method not only can not produce secondary pollution, but also saves water resources, and has better environmental protection.
Referring to fig. 1, the process of the environment-friendly waste plastic film recycling apparatus in this embodiment includes the steps of:
(1) The material to be treated is placed in a material shredding and dry sieving module, and the material shredding and dry sieving module comprises a shredding module and a dry sieving module, wherein the shredding module is used for shredding and decomposing the material into small-size crushed aggregates. Shredding the incoming material into strips of dimensions about length x width = 20 x 5 mm; the shredded plastic film exposes residues wrapped by the original bag, so that screening is convenient. The dry screen module adopts a dry screen mode, namely, water is not added for screening; the mesh screen can be a rotary screen, a vibrating screen and the like; the solid residues, mud and other adherent substances are removed by screening by the mesh screen, so that the solid waste is conveniently disposed. Two sieves with the water content of the incoming materials less than or equal to 10% can be used; a vibrating screen is preferably used for the water content of > 10%. Dust is generated in the dry sieving process and is treated by a negative pressure dust collection and bag-type dust collector.
Crushing by adding water, and crushing the sieved material by a water crusher; the water is added for crushing, and meanwhile, the friction is carried out on the surface of the material, so that the separation effect of the surface adherends is promoted.
(2) The crushed aggregates are put into the crushed aggregate cleaning module, and the crushed aggregate cleaning module (see the cleaning method of the flexible aggregates and the special rinsing tank disclosed in the authorized publication number CN 104148326B) cleans the material.
(3) The washed material is fed into a powerful decontamination device, and the substances such as plastics and paper which are easy to form slurry are separated by the powerful decontamination device, and the substances such as paper which are easy to form slurry and plastics are respectively recovered by a pulp filtering module 11b and a regeneration granulating module.
(4) The crushed aggregates cleaning module in the step (2) is conveyed into the sewage treatment module through a pipeline.
(5) The sewage generated in the slurry filtering module 11b and the regeneration granulating module in the step (3) is firstly led to the sewage precipitation module and then led to the sewage treatment module.
(6) And (3) the waste gas generated in the extrusion granulation process of the regeneration granulation module in the step (3) is led to a waste gas treatment module, and the waste gas treatment module carries out purification treatment so as to reach the emission standard.
(7) And recycling clear water obtained after the sewage treatment module is treated into the crushed aggregates cleaning module and the powerful decontamination device through a pipeline.
Example 2
Referring to fig. 11, the present embodiment is different from embodiment 1 in that a solution supply pipe 13d for spraying a solution is provided at the upper portion of the condensing chamber, and the solution sprayed from the solution supply pipe 13d is dispersed in a tank and sufficiently and directly contacts with the exhaust gas to be treated from bottom to top to perform cooling and scrubbing.
The foregoing is illustrative of the present invention, and is not to be construed as limiting thereof, but rather as various changes, modifications, substitutions, combinations, and simplifications which may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The environment-friendly waste plastic film regeneration treatment equipment is characterized by comprising a material shredding and drying screen module for shredding and drying materials, a material cleaning module for cleaning and removing impurities from crushed materials after shredding and drying screens, a powerful decontamination device for separating plastic and adherends which are easy to form slurry, a regeneration treatment module for carrying out regeneration treatment on the separated materials and an environment-friendly treatment module for treating pollutants generated in the material recycling treatment process;
Wherein the material shredding dry screen module, the crushed aggregates cleaning module and the powerful decontamination device are connected in sequence; the regeneration treatment module comprises a regeneration granulation module for carrying out regeneration treatment on the plastics separated by the powerful decontamination device and a slurry filtering module for filtering the substances easy to form slurry separated by the powerful decontamination device;
the environment-friendly treatment module comprises a sewage treatment module for treating sewage generated by the crushed aggregates cleaning module and sewage generated by the powerful decontamination device, and an exhaust gas treatment module for treating exhaust gas generated by the regeneration granulation module; the sewage generated by the powerful decontamination device comprises sewage separated by the powerful decontamination device and separated by plastic before entering the regeneration granulation module, and sewage generated by the slurry filtering module, wherein the sewage generated by the powerful decontamination device is pretreated by the sewage precipitation module and then enters the sewage treatment module for treatment, and clear water obtained after the treatment of the sewage treatment module is conveyed to the crushed aggregates cleaning module or/and the powerful decontamination device for repeated use;
The sewage treatment module comprises a sewage regulating tank, a biochemical treatment device, a sedimentation filtration device and an activated sludge regulating and distributing tank, wherein the sewage inlet end of the sewage regulating tank introduces sewage through a pipeline, the sewage discharge end of the sewage regulating tank is connected with the sewage inlet end of the biochemical treatment device through a pipeline, and the activated sludge inlet end of the activated sludge regulating and distributing tank is connected with the activated sludge discharge end of the sedimentation filtration device through a pipeline; the clear water discharge end of the precipitation filtering device is connected with the clear water inlet end of the recycling adjusting tank through a pipeline; the sewage regulating tank comprises a sewage buffer tank and a preaeration tank communicated with the sewage buffer tank through a pipeline, wherein a filter screen is arranged on the sewage buffer tank, and activated sludge is arranged at the bottom of the preaeration tank; the pipeline between the sewage buffer tank and the preaeration tank is n-shaped;
The sewage precipitation module comprises a dosing mechanism for dosing the medicament, a mixing area for mixing the medicament with the sewage, a coagulation area for agglomerating the medicament with impurities in the sewage, a precipitation area for precipitating flocculate and a water collecting area for collecting supernatant effluent; is arranged in a frame consistent with the external dimension of the container; the mixing zone comprises a medicine mixing tank and a turbulent stirring mechanism arranged in the medicine mixing tank, wherein a second water inlet used for leading sewage into the medicine mixing tank and a water outlet used for leading sewage mixed with the medicament to the coagulation zone are arranged in the medicine mixing tank; the second water inlet is arranged at the upper end of the side wall of the medicine mixing tank and is tangential to the inner wall of the medicine mixing tank; the bottom of the sedimentation zone is provided with a discharge outlet for discharging sediment; the medicine mixing tank, the coagulation area, the sedimentation area and the water collecting area are sequentially connected along the water flow direction; the medicine dispensing mechanism is arranged above the medicine mixing tank;
The mixing area comprises a medicine dissolving area and a medicine mixing area; the two medicine mixing tanks are respectively a first medicine mixing tank and a second medicine mixing tank, the inner cavity of the first medicine mixing tank forms the medicine dissolving area, and the inner cavity of the second medicine mixing tank forms the medicine mixing area; the second water inlet is arranged on the first medicine mixing tank, and the water outlet is arranged on the second medicine mixing tank; an intermediate channel which is communicated with each other is arranged between the bottoms of the two medicine mixing tanks; the dosing mechanism is arranged above the first medicine mixing tank;
Two parallel coagulation channels are arranged in the coagulation zone, and the coagulation channels are a first coagulation channel and a second coagulation channel respectively; the head end of the first coagulation channel is connected with the water outlet, and the tail end of the first coagulation channel is connected with the tail end of the second coagulation channel; the head end of the second coagulation channel is communicated with a precipitation zone; a water distribution area is arranged between the coagulation area and the precipitation area, and a vertically arranged water distribution plate is arranged in the water distribution area; the water distribution plate is provided with a plurality of water distribution holes which are transversely and uniformly arranged; the water distribution holes are arranged in two rows and are staggered up and down; the middle bottom of the sedimentation zone is provided with two collection zones; the bottoms of the medicine mixing tank, the coagulation area and the collection area are provided with the discharge outlet; the lower ends of the collecting area and the coagulation area are of inverted triangle structures; the outlet at the bottom of the medicine mixing tank is arranged on the middle channel; an overflow weir plate arranged through a lifting structure is arranged between the sedimentation area and the water collecting area, and the top of the overflow weir plate is a tooth-shaped overflow part formed by a plurality of teeth which are arranged in a straight line;
The waste gas treatment module comprises a waste gas absorption condensation module and a waste gas purification module, the waste gas absorption condensation module comprises an absorption condensation tank, the inner cavity of the absorption condensation tank forms a condensation chamber, the lower end of the condensation chamber is provided with a waste gas inlet and a gas distribution pipe, and the upper end of the condensation chamber is provided with a waste gas outlet; a cooling coil pipe for cooling is arranged in the condensation chamber, a solution supplementing inlet is arranged on the absorption condensation tank, and the solution in the condensation chamber and the waste gas to be treated are subjected to contact condensation and gas washing treatment; the absorption condensing tank is provided with an overflow port, the solution is conveyed to the condensing chamber by a pump, a jet device for sucking and mixing waste gas to be treated is arranged on a solution conveying pipeline, the tail end of the solution conveying pipeline is connected with a gas distribution pipe in the condensing chamber, and a gas inlet of the gas distribution pipe forms a solution supplementing inlet; an exhaust outlet of the exhaust purification module is communicated with the preaeration tank through an air pipe;
The waste gas purification module comprises a biological film absorption tower, a water vapor separation device and an active carbon adsorption device, wherein an air inlet for waste gas to enter is formed in the biological film absorption tower, the top of the biological film absorption tower is connected with a sediment discharge end in the sediment filtering device through a pipeline, and an active sludge discharge outlet at the bottom of the biological film absorption tower is connected with an active sludge inlet end of the biochemical treatment device through a pipeline; the air inlet of the water-steam separation device is connected with the air outlet of the biomembrane absorption tower through a pipeline, and the air outlet of the water-steam separation device is connected with the air inlet of the activated carbon absorption device through a pipeline.
2. The apparatus according to claim 1, wherein an oil and slag removal module is provided between the crushed aggregates cleaning module and the sewage treatment module, the oil and slag removal module including a cleaning tank, a slag discharging device provided in the cleaning tank for discharging the sediments and the scum out of the cleaning tank, an oil discharging device for discharging the oil in the sewage out of the cleaning tank, and a water discharging device for discharging the treated sewage out of the cleaning tank, wherein the cleaning tank is divided into an oil and slag removal area and a water discharging area along a flow direction of the sewage, wherein one end of the cleaning tank is provided with a third water inlet, and the third water inlet is communicated with the oil and slag removal area; a partition piece is arranged between the oil removal and slag removal area and the drainage area, the partition piece comprises a first partition plate and a second partition plate which are vertically arranged along the sewage flowing direction, a first notch is formed in the lower end of the first partition plate, a second notch is formed in the upper end of the second partition plate, and the first notch and the second notch are communicated;
the deslagging device, the oil discharging device and the drainage device are sequentially arranged along the flowing direction of sewage, wherein the deslagging device and the oil discharging device are arranged in the oil removing deslagging area; the drainage device is arranged in the drainage area.
3. The apparatus for recycling waste plastic film according to claim 1, wherein the powerful decontamination device comprises an outer cylinder, a rotating shaft arranged in the outer cylinder, and a driving device for driving the rotating shaft to rotate; the outer surface of the rotating shaft is provided with a plurality of protruding teeth, each tooth extends along the axial direction of the rotating shaft, and the plurality of teeth are distributed along the circumferential direction of the rotating shaft; the outer cylinder is divided into an upper semicircular area and a lower semicircular area at a semicircular position in the horizontal direction, and the upper semicircular area is provided with a plurality of first water inlets; drain holes are uniformly distributed on the lower semicircular area; the inner wall of the outer cylinder is provided with protruding teeth, gaps are reserved between the teeth on the rotating shaft and the teeth on the outer cylinder, and the teeth on the outer cylinder are shaped like Laifu wires; along the conveying direction of the materials, a feeding port is arranged above the front end of the outer cylinder, and a plastic film discharging port is arranged below the rear end of the outer cylinder.
4. A process applied to the apparatus for recycling waste plastic film according to any one of claims 1 to 3, characterized by comprising the steps of:
(1) Placing the material to be treated into a material shredding and dry sieving module, and shredding and decomposing the material shredding and dry sieving module into small-volume crushed aggregates;
(2) Putting crushed aggregates into a crushed aggregate cleaning module, and cleaning materials by the crushed aggregate cleaning module; removing the adhering residue;
(3) The cleaned materials enter a powerful decontamination device, the powerful decontamination device separates the plastics and the substances which are easy to form slurry, and the slurry filtering module and the regeneration granulating module respectively recycle the substances and the plastics which are easy to form slurry;
(4) The crushed aggregates cleaning module in the step (2) is conveyed into a sewage treatment module through a pipeline;
(5) The sewage generated in the slurry filtering module and the regeneration granulating module in the step (3) is led to a sewage precipitation module and then led to a sewage treatment module;
(6) The waste gas generated in the extrusion granulation process of the regeneration granulation module in the step (3) is led into a waste gas treatment module, and the waste gas treatment module carries out purification treatment to reach the emission standard;
(7) And recycling clear water obtained after the sewage treatment module is treated into the crushed aggregates cleaning module and/or the powerful decontamination device through a pipeline.
5. The process of the environmental protection type waste plastic film recycling apparatus according to claim 4, wherein in the step (5), the sewage precipitation module is treated by: introducing sewage into a medicine mixing tank, and adding a medicament into the medicine mixing tank, so that the sewage and the medicament are fully mixed, then entering a coagulation area, combining and condensing the sewage and the medicament in the coagulation area to form flocks, connecting adjacent flocks to form flocks with net capturing effect on impurity suspended matters in water, then entering a sedimentation area, settling the flocks downwards in the sedimentation area, selecting a machine to discharge, collecting separated clear water in a water collecting area, and recycling the clear water into a crushed aggregates cleaning module and a powerful decontamination device by a pipeline in the water collecting area.
6. The process of the recycling apparatus for waste plastic film in accordance with claim 4, wherein in step (6), water vapor and exhaust gas generated in the process of extrusion granulation by the recycling granulation module are led to the exhaust gas absorption condensation module, and the exhaust gas is pretreated by the exhaust gas absorption condensation module: is sucked into the condenser by power; the refrigerant flows in a cooling coil pipe for cooling in the condenser, and takes away heat brought by the waste gas in a non-direct contact mode with the waste gas; the solution in the condenser is directly contacted and mixed with the waste gas, and the waste gas is subjected to gas washing treatment in a contact condensation mode with the waste gas to be treated, so that the pollutant content of the waste gas is reduced.
7. The process of the recycling apparatus for waste plastic film in environment friendly manner as claimed in claim 6, wherein the waste gas treated in the waste gas absorbing and condensing module is introduced into the waste gas purifying module; introducing activated sludge into a biomembrane absorption tower, and forming a biomembrane on the surface of a filler arranged in the tower; the waste gas is fully contacted with the biological film through the biological film absorption tower, and the biological film effectively absorbs organic matters in the waste gas; the absorbed waste gas is subjected to moisture removal through a water-gas separation device, and is subjected to active carbon adsorption and then discharged after reaching standards;
Introducing active sediment generated by a sediment filtering device in the sewage treatment module into a biological membrane absorption tower; the activated sludge discharged from the bottom of the biomembrane absorption tower and the water removed by the water-gas separation device are returned to the biochemical treatment device of the sewage treatment module for treatment.
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| CN112474738B (en) * | 2020-11-19 | 2024-02-09 | 广东致顺化工环保设备有限公司 | Fine classification process and system for recycling resident garbage |
| DE102022104008A1 (en) * | 2022-02-21 | 2023-08-24 | Krones Aktiengesellschaft | Process and system for shredding and cleaning used plastic |
| CN114833963B (en) * | 2022-07-04 | 2022-09-02 | 烟台亮彩塑料科技有限公司 | Melting granulation device with self-cleaning function |
| TWI846351B (en) * | 2023-02-24 | 2024-06-21 | 潤輝科技有限公司 | Plastic dehumidification and drying device |
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