CN111732280A - Sewage purification process and equipment for producing green environment-friendly PET bottle flakes - Google Patents
Sewage purification process and equipment for producing green environment-friendly PET bottle flakes Download PDFInfo
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- CN111732280A CN111732280A CN202010617630.9A CN202010617630A CN111732280A CN 111732280 A CN111732280 A CN 111732280A CN 202010617630 A CN202010617630 A CN 202010617630A CN 111732280 A CN111732280 A CN 111732280A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/38—Polymers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- 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
Abstract
The technical scheme of the invention is realized as follows: a sewage purification process for producing green environment-friendly PET bottle flakes comprises the following steps: sewage conveying, precipitation and impurity removal, flotation removal treatment, biological purification and recycling; through new sewage purification technology, the sewage purification effect to PET bottle piece production usefulness is good, purify completely, and can directly utilize after purifying, be convenient for recycle.
Description
Technical Field
The invention relates to the field of resource regeneration, in particular to a sewage purification process and equipment for producing green and environment-friendly PET bottle flakes.
Background
The chemical formula of the polyethylene terephthalate is-OCH 2-CH2OCOC6H4 CO-English name: polyethylene terephthalate, abbreviated as PET, is a high polymer and is obtained by carrying out dehydration condensation reaction on ethylene terephthalate; the ethylene terephthalate is obtained by esterification reaction of terephthalic acid and ethylene glycol; PET is a milky white or pale yellow, highly crystalline polymer with a smooth and glossy surface; the high-temperature-resistant and high-frequency-resistant composite material has excellent physical and mechanical properties in a wider temperature range, the long-term use temperature can reach 120 ℃, the electrical insulation property is excellent, even under high temperature and high frequency, the electrical property is still good, but the corona resistance is poor, and the creep resistance, the fatigue resistance, the friction resistance and the dimensional stability are good.
The general process flow of the recovery production of PET bottle flakes in China is as follows: unpacking, floating, rinsing, washing, dehydrating and drying; can see that some PET bottle pieces recovery in-process from foretell process flow need wash many times, and the demand of water is great in abluent in-process, and be mingled with many clocks of discarded object in the PET bottle piece of retrieving, these discarded object and water mix and form a large amount of sewage, direct discharge can cause water pollution, harm environment, the event needs to carry out purification treatment to the produced sewage of PET bottle piece recovery production, current processing to PET bottle piece production sewage is comparatively not good, can't satisfy the requirement to sewage cyclic utilization.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a sewage purification process and equipment for producing green and environment-friendly PET bottle flakes.
The technical scheme of the invention is realized as follows: a sewage purification process for producing green environment-friendly PET bottle flakes comprises the following steps:
s1 sewage conveying: firstly, conveying sewage generated by cleaning PET bottle chips to sewage purification equipment for treatment;
s2 precipitation and impurity removal: introducing the sewage into a primary sedimentation tank, continuously introducing the sewage into a secondary sedimentation tank for secondary sedimentation after primary sedimentation, and removing impurities with high quality in the sewage after the impurities in the sewage are left in the primary sedimentation tank and the secondary sedimentation tank through sedimentation;
s3 float removing treatment: the sewage after precipitation and impurity removal enters a floating removal tank, impurities floating on the surface of the sewage are removed through a slag scraping assembly in the floating removal tank, and small particle impurities are adsorbed through an adsorption block;
s4 biological purification: the sewage after the flotation treatment enters an ecological pool, firstly, the sewage is filtered again through a first filter screen to remove impurities in the sewage, then, small particle impurities are adsorbed again through an adsorption plate to be removed, and then, the sewage is biologically purified through phytoplankton to absorb and decompose chemical pollutants in the sewage;
s5 recycling: the sewage after biological purification treatment is discharged from the ecological pool for recycling.
In addition, the invention also discloses a sewage purification device for producing the green and environment-friendly PET bottle flakes, which is characterized in that: include one-level sedimentation tank, second grade sedimentation tank, remove and float pond and ecological pool according to purifying the order, one-level sedimentation tank, second grade sedimentation tank, remove and float pond and ecological pool and connect gradually, the second grade sedimentation tank through first conveyer pipe with remove and float the pond intercommunication, remove and float the pond and communicate through second conveyer pipe and ecological pool.
Preferably: a sewage inlet pipe is arranged on one side of the primary sedimentation tank, one end of the sewage inlet pipe penetrates into the primary sedimentation tank and is communicated with the primary sedimentation tank, sewage enters the primary sedimentation tank through the sewage inlet pipe, a slow flow component is arranged in the primary sedimentation tank and comprises a slow flow cylinder arranged in the primary sedimentation tank, the slow flow cylinder is arranged on the side wall of the primary sedimentation tank close to the sewage inlet pipe, the sewage inlet pipe sequentially penetrates through the side wall of the primary sedimentation tank and the side wall of the slow flow cylinder to be communicated with the inner cavity of the slow flow cylinder, a plurality of flow slowing plates which are uniformly arranged at intervals and have wavy outer surfaces are arranged in the flow slowing cylinder, each flow slowing plate is vertically arranged in the flow slowing cylinder, connecting wires are arranged at the upper end and the lower end of each flow slowing plate, the upper end and the lower end of each slow flow plate are fixed on the inner side wall of the slow flow cylinder through connecting wires, and water through holes are formed in the side wall, far away from the sewage inlet pipe, of the slow flow cylinder; an overflow groove communicated with the secondary sedimentation tank is formed in the side wall of the primary sedimentation tank, which is far away from the sewage inlet pipe; sewage enters the slow flow cylinder from the sewage inlet pipe and is buffered by the slow flow plate.
Preferably: a sewage discharge assembly is arranged in the secondary sedimentation tank, and the sewage discharge mechanism comprises a sewage storage mechanism and a lifting mechanism for controlling the sewage storage mechanism to lift; store up dirty mechanism including album dirty board and setting up the bottom plate at album dirty board lower extreme, album dirty board and bottom plate all with the lateral wall case contact of second grade sedimentation tank, album dirty board and bottom plate interval set up, collect and form between dirty board and the bottom plate and store up dirty chamber, collect and be connected through the rubber column between dirty board and the bottom plate, the dirty board upper end of collection is provided with the dirty mound of drawing that a plurality of even intervals set up, the dirty board of collection is provided with into dirty mouthful between each draws dirty mound.
Preferably: the lower end of the bottom plate is provided with a vent groove, the side wall of the secondary sedimentation tank is provided with a vent hole, the vent hole is communicated with the vent groove, and a rubber plug capable of opening and closing the vent hole is arranged on the vent hole; the dirt collecting plate is also provided with a scraper which is in contact with the inner wall of the secondary sedimentation tank.
Preferably: the floating removal tank is internally provided with a slag scraping assembly, and the slag scraping assembly comprises a slag scraping roller arranged in the floating removal tank and a slag scraping motor which is arranged on the outer side wall of the floating removal tank and can control the slag scraping roller to rotate; the output end of the slag scraping motor penetrates into the side wall of the floating pool and is fixedly connected with the slag scraping roller, the surface of the slag scraping roller is provided with a plurality of slag scraping plates which are uniformly arranged around the circumferential direction of the slag scraping roller, and the slag scraping plates are of a net structure.
Preferably: the floating pond is internally provided with a blowing assembly, the blowing assembly comprises a compressor arranged on one side of the floating pond, a gas pipe arranged on the output end of the compressor, a bubble generating assembly arranged in the floating pond and a bubble secondary shaping cover sleeved outside the bubble generating assembly, the bubble generating assembly comprises a blowing pipe communicated with the gas pipe, a plurality of blowing holes are formed in the blowing pipe at intervals, a rubber diaphragm is fixed on the outer ring of the blowing pipe through a hoop, a plurality of blowing micropores are formed in the rubber diaphragm, and the diameter of each blowing hole is larger than that of each blowing micropore; the bubble secondary setting cover comprises a cover cylinder sleeved outside the bubble generating assembly, and the cover cylinder is provided with a gas distribution hole.
Preferably: remove to float and be provided with the stirring subassembly in the pond, the stirring subassembly is removing the agitator motor who floats bottom of the pool portion and setting up and is removing the rotation axis that floats in the pond and receive agitator motor control rotation, be provided with the stirring frame on the rotation axis, the last adsorption block that is installed of stirring frame, adsorption block surface sets up to honeycomb.
Preferably: the second conveying pipe is installed on the left side of the ecological pool, a first filter screen, an adsorption plate and a second filter screen are sequentially arranged in the ecological pool from left to right, and the first filter screen, the adsorption plate and the second filter screen divide the interior of the ecological pool into a filtering area, an adsorption area, a culture area and a water outlet area; the adsorption plate is provided with a through hole for water flow to pass through, the right side of the ecological pool is provided with a circulating pipe, and the circulating pipe is communicated with the water outlet area.
Preferably: phytoplankton is cultured in the culture area, and the coverage of the phytoplankton in the culture area is controlled to be 100-180%.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, by means of precipitation impurity removal, floatation removal treatment and precipitation purification, floating materials and precipitates in the sewage are removed separately, and the sewage is purified in all directions by means of adsorption and biological purification, so that the sewage is completely purified, has a good purification effect and can be recycled after purification;
(2) through the arrangement of the first-level sedimentation tank, the slow flow component in the first-level sedimentation tank, the second-level sedimentation tank and the sewage discharge mechanism in the second-level sedimentation tank, sewage is subjected to multiple times of fractional sedimentation, the effect of sedimentation treatment is guaranteed, water flow impact is controlled, the sludge, impurities and sewage are controlled to be remixed, and the stability of sedimentation and impurity removal is guaranteed.
(3) Through removing the setting of scraping the sediment subassembly in superficial pond and rather than, scrape out floating the impurity in the sewage, stir sewage through the subassembly of blowing and stirring subassembly simultaneously, guarantee to scrape the sediment edulcoration completely, guarantee the purification of sewage to assist and adsorb impurity with the absorption piece, further improve sewage purification effect.
(4) Through the setting of ecological pond, get rid of once more through the particle impurity of filter screen and adsorption plate in to sewage earlier to decompose the absorption through the harmful chemical substance of phytoplankton in to sewage, further improve sewage purification effect, but guarantee sewage recycling behind the processing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic structural diagram of a primary sedimentation tank according to the present invention;
FIG. 3 is a schematic structural diagram of a secondary sedimentation tank according to the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 3;
FIG. 5 is a schematic structural view of a float removing tank according to the present invention;
FIG. 6 is a schematic structural view of a slag scraping roller in the invention;
FIG. 7 is a schematic structural view of a bubble secondary sizing cap according to the present invention;
FIG. 8 is a schematic view of the structure of the bubble generating module according to the present invention;
FIG. 9 is a schematic structural view of an ecological pond according to the present invention;
the examples in the figure are: 1. a first-level sedimentation tank, a second-level sedimentation tank, a floating removal tank, a 4 ecological tank, a 5 sewage inlet pipe, a 6 sewage delivery pipe, a first delivery pipe, a 7 sewage delivery pipe, a second delivery pipe, a 8 sewage delivery pipe, a 9 sewage delivery pipe, a slow flow component, a 91 sewage delivery cylinder, a 92 sewage delivery plate, a 93 sewage delivery line, a 94 sewage delivery hole, a 10 overflow groove, a 11 sewage storage mechanism, a 110 rubber plug, a 111 sewage collection plate, a 112 sewage collection plate, a bottom plate, a 113 sewage storage cavity, a 114 sewage column, a 115 sewage diversion pier, a 116 sewage inlet, a 117 sewage outlet, a vent groove, a 118 vent hole, a 119, a scraper blade, a 12 lifting mechanism, a 13 sewage scraping component, a 131, a sewage scraping roller, a 132 sewage scraping motor, a 133 sewage scraping plate, a 14 sewage blowing component, a 141 compressor, a 142 micropore air pipe, a 143, an air blowing pipe, a 144 air blowing hole, a 145 rubber diaphragm, 146, a blowing air, 147 air, a cover cylinder, a 148, an air distribution hole, a 15 stirring component, stirring motor 152, rotation axis, 153, stirring frame, 154, adsorption piece, 16, first filter screen, 17, adsorption plate, 18, second filter screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in figure 1, the invention discloses a sewage purification process for producing green environment-friendly PET bottle flakes, which comprises the following steps:
s1 sewage conveying: firstly, conveying sewage generated by cleaning PET bottle chips to sewage purification equipment for treatment;
s2 precipitation and impurity removal: introducing the sewage into a primary sedimentation tank, continuously introducing the sewage into a secondary sedimentation tank for secondary sedimentation after primary sedimentation, and removing impurities with high quality in the sewage after the impurities in the sewage are left in the primary sedimentation tank and the secondary sedimentation tank through sedimentation;
s3 float removing treatment: the sewage after precipitation and impurity removal enters a floating removal tank, impurities floating on the surface of the sewage are removed through a slag scraping assembly in the floating removal tank, and small particle impurities are adsorbed through an adsorption block;
s4 biological purification: the sewage after the flotation treatment enters an ecological pool, firstly, the sewage is filtered again through a first filter screen to remove impurities in the sewage, then, small particle impurities are adsorbed again through an adsorption plate to be removed, and then, the sewage is biologically purified through phytoplankton to absorb and decompose chemical pollutants in the sewage;
s5 recycling: the sewage after biological purification treatment is discharged from the ecological pool for recycling, and the purified sewage can be conveyed to cleaning equipment or a primary sedimentation tank for reuse.
The invention has the beneficial effects that: removing bottle flake scraps and various precipitable impurities contained in the sewage through various precipitation treatments, removing floating impurities such as label scraps and the like in the sewage through a floatation removing treatment, simultaneously completely removing particle impurities in the sewage by assisting filtration and adsorption, and finally absorbing and decomposing chemical pollutants in the sewage by using plants through biological purification; the floating materials and the sediments in the sewage are removed separately, and the sewage is purified in all directions by adsorption and biological purification, so that the sewage is completely purified, the purification effect is good, and the sewage can be recycled after purification.
Example 2
As shown in fig. 2 to 9, the invention discloses a sewage purification device for producing green and environment-friendly PET bottle flakes, which comprises a primary sedimentation tank 1, a secondary sedimentation tank 2, a floatation removing tank 3 and an ecological tank 4 according to a purification sequence, wherein the primary sedimentation tank 1, the secondary sedimentation tank 2, the floatation removing tank 3 and the ecological tank 4 are sequentially connected and communicated with each other, the secondary sedimentation tank 2 is communicated with the floatation removing tank 3 through a first conveying pipe 6, and the floatation removing tank 3 is communicated with the ecological tank 4 through a second conveying pipe 7.
In this embodiment, a sewage inlet pipe 5 is installed at one side of the first-stage sedimentation tank 1, one end of the sewage inlet pipe 5 penetrates into the first-stage sedimentation tank 1 and is communicated with the first-stage sedimentation tank 1, sewage enters the first-stage sedimentation tank 1 through the sewage inlet pipe 5, a slow flow component 9 is arranged in the first-stage sedimentation tank 1, the slow flow component 9 comprises a slow flow cylinder 91 arranged in the first-stage sedimentation tank 1, the slow flow cylinder 91 is installed on a side wall close to the sewage inlet pipe 5 in the first-stage sedimentation tank 1, the sewage inlet pipe 5 penetrates into a side wall of the first-stage sedimentation tank 1 and a side wall of the slow flow cylinder 91 in sequence and is communicated with an inner cavity of the slow flow cylinder 91, three slow flow plates 92 which are arranged at even intervals and have wavy outer surfaces are arranged in the slow flow cylinder 91, each slow flow plate 92 is vertically arranged in the slow flow cylinder 91, connecting wires 93 are arranged at the upper and lower ends, the connecting line 93 is arranged to limit the movement of the buffer plates 92 so as to avoid the deviation of the buffer plates 92, the upper end and the lower end of each buffer plate 92 are fixed on the inner side wall of the buffer cylinder 91 through the connecting line 93, and the side wall of the buffer cylinder 91 far away from the sewage inlet pipe 5 is provided with a water through hole 94; the side wall of the primary sedimentation tank 1 far away from the sewage inlet pipe 5 is provided with an overflow groove 10 communicated with the secondary sedimentation tank 2; the sewage enters the slow flow cylinder 91 from the sewage inlet pipe 5 and is buffered by the buffer flow plate 92.
Through the technical scheme, sewage enters into the one-level sedimentation tank from the sewage inlet tube, at first, enter into inside the unhurried current case, sewage at first strikes on the unhurried current board, the polylith unhurried current board is along with rivers make a round trip to rock and unload the power, and reduce the straight line impact of rivers through the wavy inclined plane on the unhurried current board, the sewage through unloading the power steadily flows into the inside of one-level sedimentation tank from the water hole of crossing on the unhurried current section of thick bamboo, sewage deposits in the one-level sedimentation tank through sediment back impurity, the sewage on upper strata flows out from the overflow launder and enters into the secondary sedimentation tank, the rivers impact force that produces when avoiding sewage to enter into the one-level sedimentation tank is big, cause the influence.
In this embodiment, a sewage discharging assembly is arranged in the secondary sedimentation tank 2, and the sewage discharging mechanism comprises a sewage storage mechanism 11 and a lifting mechanism 12 for controlling the lifting of the sewage storage mechanism 11; the lifting mechanism 12 is a lifter, the dirt storage mechanism 11 comprises a dirt collecting plate 111 and a bottom plate 112 arranged at the lower end of the dirt collecting plate 111, the dirt collecting plate 111 and the bottom plate 112 are both contacted with the side wall box of the secondary sedimentation tank 2, the dirt collecting plate 111 and the bottom plate 112 are arranged at intervals, a dirt storage cavity 113 is formed between the dirt collecting plate 111 and the bottom plate 112, the dirt collecting plate 111 and the bottom plate 112 are connected through a rubber column 114, and the upper end and the lower end of the rubber column 114 are respectively bonded and fixed with the dirt collecting plate 111 and the bottom plate 112; the dirty board 111 upper end of collection is provided with a plurality of even intervals and sets up draws dirty mounds 115, draw dirty mound 115 and collection dirty board 111 integrated into one piece, the dirty board 111 of collection is provided with into dirty mouthful 116 between each draws dirty mound 115.
Through the technical scheme, after partial impurities are removed by the sewage through the sedimentation of the primary sedimentation tank, the sewage flows into the secondary sedimentation tank through the overflow tank, the impurity precipitation treatment is carried out again in the secondary sedimentation tank, the impurities are precipitated towards the strips in the secondary sedimentation tank and are firstly contacted with the sewage collecting plate, the sludge impurities flow through the sewage guide pier and enter the sewage storage cavity through the sewage inlet, and the sludge impurities are difficult to escape into the sewage storage cavity and are mixed with the upper-layer sewage again, so that the purification effect of the sewage is ensured, and the impurities in the sewage are prevented from being mixed with the sewage again after being precipitated; the sludge impurity stored in the sludge storage cavity is cleaned by the movement of the sewage storage mechanism driven by the lifting mechanism, and the effect of depositing and removing impurities is ensured.
In this embodiment, a vent groove 117 is formed at the lower end of the bottom plate 112, a vent hole 118 is formed on the side wall of the secondary sedimentation tank 2, the vent hole 118 is communicated with the vent groove 117, and a rubber plug 110 capable of opening and closing the vent hole 118 is arranged on the vent hole 118; the dirt collecting plate 111 is also provided with a scraper 119, and the scraper 119 is in contact with the inner wall of the secondary sedimentation tank 2.
Through above-mentioned technical scheme, the setting of air vent and air channel guarantees that there is gaseous below to get into and reduces the convenient lift of traction force when elevating system control stores up dirty mechanism and goes up and down, and the rubber buffer guarantees opening and close of air vent, and the setting of scraper blade is scraped the inside wall of second grade sedimentation tank when elevating system pulling stores up dirty mechanism and goes up, strikes off the impurity that adsorbs on the lateral wall, plays certain clean effect, guarantees the stability of second grade sedimentation tank work.
In the embodiment, a slag scraping assembly 13 is arranged in the floatation removing pool 3, and the slag scraping assembly 13 comprises a slag scraping roller 131 arranged in the floatation removing pool 3 and a slag scraping motor 132 which is arranged on the outer side wall of the floatation removing pool 3 and can control the rotation of the slag scraping roller 131; the output of scraping sediment motor 132 penetrates and removes superficial 3 lateral walls in pond and scraping sediment roller 131 fixed connection, it is provided with a plurality of scrapers 133 around the even setting of scraping sediment roller 131 circumference to scrape sediment roller 131 surface, scrapers 133 welded fastening is on scraping sediment roller 131, scrapes 133 for the network structure that can supply sewage to pass through, scrapers 133 can just penetrate inside the water with sewage contact, the other end of scraping 133 extends and removes the superficial 3 outsides in pond.
According to the technical scheme, after secondary sedimentation, sewage is removed from the secondary sedimentation tank through the tertiary belt of the first conveying pipe, the slag scraping roller is driven to rotate through the slag scraping motor, the slag scraping roller drives the slag scraping plate on the slag scraping roller to rotate, the slag scraping plate rotates on the upper layer of the sewage to scrape off impurities floating in the sewage, and the impurities are driven by the slag scraping plate to be driven to the outside of the floating removal tank along with the rotation of the slag scraping roller to be discharged; remove through scraping the showy impurity of sediment subassembly in to the sewage, guarantee the stable of floater in the sewage and get rid of.
In this embodiment, an air blowing assembly 14 is arranged in the flotation tank 3, the air blowing assembly 14 includes a compressor 141 arranged on one side of the flotation tank 3, an air pipe 142 arranged on an output end of the compressor 141, a bubble generating assembly arranged in the flotation tank 3, and a bubble secondary shaping cover sleeved outside the bubble generating assembly, the bubble generating assembly includes an air blowing pipe 143 communicated with the air pipe 142, a plurality of air blowing holes 144 are arranged on the air blowing pipe 143 at intervals, a rubber membrane 145 is fixed on an outer ring of the air blowing pipe 143 through a hoop, a plurality of air blowing micropores 146 are arranged on the rubber membrane 145, and a diameter of the air blowing hole 144 is larger than a diameter of the air blowing micropores 146; the bubble secondary setting cover comprises a cover cylinder 147 sleeved outside the bubble generating assembly, and the cover cylinder 147 is provided with a gas distribution hole 148.
According to the technical scheme, when the flotation removing treatment is carried out, the blowing assembly is opened, the compressor is started to convey outside air to the blowing pipe of the bubble generating assembly through the air conveying pipe, the air is conveyed between the blowing pipe and the rubber membrane through the blowing hole, when the pressure reaches a certain value, the rubber membrane is supported by the air, the protrusion is arched, the blowing micropores are expanded to be circular holes, and the air is discharged from the blowing micropores in the form of bubbles; meanwhile, the secondary setting cover wraps the bubble generating assembly, and after bubbles are discharged from the bubble generating assembly, the bubbles are discharged in a more uniform and finer mode through the air distribution holes in the cover cylinder, so that the discharged bubbles are more stable, and the coverage area is wider; mix sewage in removing superficial pond through the bubble, guarantee that showy impurity upwards floats, guarantee to get rid of the completion of showy impurity in the sewage, improve the purifying effect of sewage.
In this embodiment, it is provided with stirring subassembly 15 to remove to float 3 internal stirring subassembly 15, stirring subassembly 15 is removing the agitator motor 151 of floating 3 bottoms and setting up and removing the rotatory rotation axis 152 of agitator motor 151 control in floating 3, agitator motor 151's output penetrates and removes floating 3 internal and rotation axis 152 welding, the welding has stirring frame 153 on the rotation axis 152, install on the stirring frame 153 and adsorb piece 154, adsorb piece 154 and its bonding on stirring frame 153 for the active carbon, adsorb piece 154 surface and set up to honeycomb, and increase area of contact is convenient for store the absorption of impurity.
Through above-mentioned technical scheme, through the setting of stirring subassembly, drive rotation axis rotation through agitator motor to drive stirring frame and adsorption block and rotate, further stir sewage, make the showy impurity that adsorbs in the bottom of the pool portion upwards float, reinforcing sewage purification effect adsorbs impurity through adsorbing the piece simultaneously, carries out certain absorption to the impurity in the sewage and gets rid of.
In this embodiment, the second conveying pipe is installed on the left side of the ecological pool 4, a first filter screen 16, an adsorption plate 17 and a second filter screen 18 are sequentially arranged in the ecological pool 4 from left to right, and the first filter screen 16, the adsorption plate 17 and the second filter screen 18 divide the interior of the ecological pool 4 into a filtering area, an adsorption area, a culture area and a water outlet area; the adsorption plate 17 is provided with a through hole for water flow to pass through, the circulating pipe 8 is installed on the right side of the ecological pool, and the circulating pipe 8 is communicated with the water outlet area.
In this embodiment, phytoplankton is cultivated in the cultivation area, the coverage of the phytoplankton in the cultivation area is controlled to be 100-180%, and the coverage of the phytoplankton in the cultivation area is controlled to be 100-180%, so that the best effect of the phytoplankton in purifying sewage can be ensured, and in this embodiment, the coverage of the phytoplankton in the cultivation area is controlled to be 150%.
Through the technical scheme, sewage is in removing the floating treatment back from removing the floating pond and entering into the ecological pool through the second conveyer pipe, at first filter screen filters sewage, detach the foreign particle who exists in the sewage, then adsorb the tiny impurity of sewage through the adsorption plate, sewage passes the through-hole of adsorption plate and enters into the breed district in, floating plants decomposes the absorption of harmful chemical substance in the sewage in the district through breeding, improve sewage purification effect, wherein the setting of second filter screen is in order to prevent that phytoplankton from entering into the play pool, sewage after the processing passes the second filter screen and enters into play pool and carry out cyclic utilization through the circulating pipe.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A sewage purification process for producing green environment-friendly PET bottle flakes comprises the following steps:
s1 sewage conveying: firstly, conveying sewage generated by cleaning PET bottle chips to sewage purification equipment for treatment;
s2 precipitation and impurity removal: introducing the sewage into a primary sedimentation tank, continuously introducing the sewage into a secondary sedimentation tank for secondary sedimentation after primary sedimentation, and removing impurities with high quality in the sewage after the impurities in the sewage are left in the primary sedimentation tank and the secondary sedimentation tank through sedimentation;
s3 float removing treatment: the sewage after precipitation and impurity removal enters a floating removal tank, impurities floating on the surface of the sewage are removed through a slag scraping assembly in the floating removal tank, and small particle impurities are adsorbed through an adsorption block;
s4 biological purification: the sewage after the flotation treatment enters an ecological pool, firstly, the sewage is filtered again through a first filter screen to remove impurities in the sewage, then, small particle impurities are adsorbed again through an adsorption plate to be removed, and then, the sewage is biologically purified through phytoplankton to absorb and decompose chemical pollutants in the sewage;
s5 recycling: the sewage after biological purification treatment is discharged from the ecological pool for recycling.
2. The sewage purification device for the production of green PET bottle flakes according to claim 1, which is characterized in that: include one-level sedimentation tank, second grade sedimentation tank, remove and float pond and ecological pool according to purifying the order, one-level sedimentation tank, second grade sedimentation tank, remove and float pond and ecological pool and connect gradually, the second grade sedimentation tank through first conveyer pipe with remove and float the pond intercommunication, remove and float the pond and communicate through second conveyer pipe and ecological pool.
3. The sewage purification device for the production of green PET bottle flakes according to claim 2, which is characterized in that: a sewage inlet pipe is installed on one side of the primary sedimentation tank, a slow flow component is arranged in the primary sedimentation tank, the slow flow component comprises a slow flow cylinder arranged in the primary sedimentation tank, the slow flow cylinder is installed on the side wall, close to the sewage inlet pipe, in the primary sedimentation tank, the sewage inlet pipe sequentially penetrates through the side wall of the primary sedimentation tank and the side wall of the slow flow cylinder to be communicated with the inner cavity of the slow flow cylinder, a plurality of slow flow plates which are uniformly arranged at intervals and have wavy outer surfaces are arranged in the slow flow cylinder, each slow flow plate is vertically arranged in the slow flow cylinder, connecting wires are arranged at the upper end and the lower end of each slow flow plate, the upper end and the lower end of each slow flow plate are fixed on the inner side wall of the slow flow cylinder through the connecting wires, and water through holes; and an overflow groove communicated with the secondary sedimentation tank is formed in the side wall of the primary sedimentation tank, which is far away from the sewage inlet pipe.
4. The sewage purification device for the production of green PET bottle flakes according to claim 2, which is characterized in that: a sewage discharge assembly is arranged in the secondary sedimentation tank, and the sewage discharge mechanism comprises a sewage storage mechanism and a lifting mechanism for controlling the sewage storage mechanism to lift; store up dirty mechanism including album dirty board and setting up the bottom plate at album dirty board lower extreme, album dirty board and bottom plate all with the lateral wall case contact of second grade sedimentation tank, album dirty board and bottom plate interval set up, collect and form between dirty board and the bottom plate and store up dirty chamber, collect and be connected through the rubber column between dirty board and the bottom plate, the dirty board upper end of collection is provided with the dirty mound of drawing that a plurality of even intervals set up, the dirty board of collection is provided with into dirty mouthful between each draws dirty mound.
5. The sewage purification device for the production of green PET bottle flakes according to claim 4, which is characterized in that: the lower end of the bottom plate is provided with a vent groove, the side wall of the secondary sedimentation tank is provided with a vent hole, the vent hole is communicated with the vent groove, and a rubber plug capable of opening and closing the vent hole is arranged on the vent hole; the dirt collecting plate is also provided with a scraper which is in contact with the inner wall of the secondary sedimentation tank.
6. The sewage purification device for the production of green PET bottle flakes according to claim 2, which is characterized in that: the floating removal tank is internally provided with a slag scraping assembly, and the slag scraping assembly comprises a slag scraping roller arranged in the floating removal tank and a slag scraping motor which is arranged on the outer side wall of the floating removal tank and can control the slag scraping roller to rotate; the output end of the slag scraping motor penetrates into the side wall of the floating pool and is fixedly connected with the slag scraping roller, the surface of the slag scraping roller is provided with a plurality of slag scraping plates which are uniformly arranged around the circumferential direction of the slag scraping roller, and the slag scraping plates are of a net structure.
7. The sewage purification device for the production of green PET bottle flakes according to claim 6, which is characterized in that: the floating pond is internally provided with a blowing assembly, the blowing assembly comprises a compressor arranged on one side of the floating pond, a gas pipe arranged on the output end of the compressor, a bubble generating assembly arranged in the floating pond and a bubble secondary shaping cover sleeved outside the bubble generating assembly, the bubble generating assembly comprises a blowing pipe communicated with the gas pipe, a plurality of blowing holes are formed in the blowing pipe at intervals, a rubber diaphragm is fixed on the outer ring of the blowing pipe through a hoop, a plurality of blowing micropores are formed in the rubber diaphragm, and the diameter of each blowing hole is larger than that of each blowing micropore; the bubble secondary setting cover comprises a cover cylinder sleeved outside the bubble generating assembly, and the cover cylinder is provided with a gas distribution hole.
8. The sewage purification device for the production of green PET bottle flakes according to claim 6, which is characterized in that: remove to float and be provided with the stirring subassembly in the pond, the stirring subassembly is removing the agitator motor who floats bottom of the pool portion and setting up and is removing the rotation axis that floats in the pond and receive agitator motor control rotation, be provided with the stirring frame on the rotation axis, the last adsorption block that is installed of stirring frame, adsorption block surface sets up to honeycomb.
9. The sewage purification device for the production of green PET bottle flakes according to claim 2, which is characterized in that: the second conveying pipe is installed on the left side of the ecological pool, a first filter screen, an adsorption plate and a second filter screen are sequentially arranged in the ecological pool from left to right, and the first filter screen, the adsorption plate and the second filter screen divide the interior of the ecological pool into a filtering area, an adsorption area, a culture area and a water outlet area; the adsorption plate is provided with a through hole for water flow to pass through, the right side of the ecological pool is provided with a circulating pipe, and the circulating pipe is communicated with the water outlet area.
10. The sewage purification device for the production of green PET bottle flakes according to claim 9, characterized in that: phytoplankton is cultured in the culture area, and the coverage of the phytoplankton in the culture area is controlled to be 100-180%.
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