CN111732280B - 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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- CN111732280B CN111732280B CN202010617630.9A CN202010617630A CN111732280B CN 111732280 B CN111732280 B CN 111732280B CN 202010617630 A CN202010617630 A CN 202010617630A CN 111732280 B CN111732280 B CN 111732280B
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- 239000010865 sewage Substances 0.000 title claims abstract description 204
- 238000000746 purification Methods 0.000 title claims abstract description 45
- 239000012535 impurity Substances 0.000 claims abstract description 60
- 238000011282 treatment Methods 0.000 claims abstract description 19
- 238000001556 precipitation Methods 0.000 claims abstract description 11
- 238000005188 flotation Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000004064 recycling Methods 0.000 claims abstract description 8
- 238000004062 sedimentation Methods 0.000 claims description 111
- 238000007790 scraping Methods 0.000 claims description 47
- 238000007667 floating Methods 0.000 claims description 44
- 239000002893 slag Substances 0.000 claims description 43
- 238000007664 blowing Methods 0.000 claims description 37
- 238000001179 sorption measurement Methods 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 7
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- 238000000034 method Methods 0.000 claims description 6
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- 231100000719 pollutant Toxicity 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 229920000139 polyethylene terephthalate Polymers 0.000 description 18
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- 238000011084 recovery Methods 0.000 description 3
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
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Classifications
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Floating Material (AREA)
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 (PET) is a high polymer and is obtained by the dehydration condensation reaction of 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 and 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, removing floating: 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 subjected to the flotation removal treatment enters an ecological pool, firstly, the sewage is filtered again through a first filter screen to remove impurities in the sewage, then, the 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, the following components are used: a sewage inlet pipe is installed 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 flow slowing assembly is arranged in the primary sedimentation tank and comprises a flow slowing barrel arranged in the primary sedimentation tank, the flow slowing barrel is installed on the side wall, close to the sewage inlet pipe, of the primary sedimentation tank, the sewage inlet pipe sequentially penetrates into the side wall of the primary sedimentation tank, the side wall of the flow slowing barrel is communicated with the inner cavity of the flow slowing barrel, a plurality of flow slowing plates which are evenly arranged at intervals and are wavy in outer surface are arranged in the flow slowing barrel, each flow slowing plate is vertically arranged in the flow slowing barrel, 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 flow slowing plate are fixed on the inner side wall of the flow slowing barrel through the connecting wires, and water passing holes are formed in the side wall, far away from the sewage inlet pipe, of each flow slowing barrel; 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, the following components are used: 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 the bottom plate of setting at album dirty board lower extreme, the dirty board of collection all contacts with the lateral wall case of second grade sedimentation tank with the bottom plate, the dirty board of collection sets up with the bottom plate interval, collects and forms between dirty board and the bottom plate and store up dirty chamber, collect and pass through rubber column connection 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 dirt mound of drawing.
Preferably, the following components are used: 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 removal device comprises a floating removal pool, a bubble generation assembly and a bubble secondary shaping cover, wherein a blowing assembly is arranged in the floating removal pool and comprises a compressor, a gas pipe, a bubble generation assembly and a bubble secondary shaping cover, the compressor is arranged on one side of the floating removal pool, the gas pipe is arranged on the output end of the compressor, the bubble generation assembly is arranged in the floating removal pool, the bubble secondary shaping cover is sleeved outside the bubble generation assembly, the bubble generation 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 the blowing holes is larger than that of the blowing micropores; 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 following components are used: 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 view of the structure of the primary sedimentation tank of 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 figures are: 1. the device comprises a primary sedimentation tank, a secondary sedimentation tank, a 3 flotation removal tank, a 4 ecological tank, a 5 sewage inlet pipe, a 6 sewage inlet pipe, a first conveying pipe, a 7 sewage inlet pipe, a second conveying pipe, a 8 circulating pipe, a 9 sewage inlet pipe, a slow flow component, a 91 sewage inlet cylinder, a 92 sewage inlet plate, a 93 sewage inlet pipe, a connecting wire, a 94 sewage outlet hole, a 10 overflow groove, 11 sewage storage mechanism, 110, a rubber plug, 111 sewage collection plate, 112 sewage collection plate, a bottom plate, 113 sewage storage cavity, 114, a rubber column, 115, a sewage guide pier, 116, a sewage inlet, 117, a vent groove, 118, a vent hole, 119, a scraper, 12, a lifting mechanism, 13, a slag scraping component, 131, a slag scraping roller, 132, a slag scraping motor, 133, a slag scraping plate, 14, a blowing component, 141, a compressor, 142, a gas pipe, 143, a gas blowing pipe, 144, a gas blowing hole, 145, a rubber membrane, 146, a blowing gas film, 147, a cover cylinder, 148, a cloth hole, 15, a stirring component, 151, a stirring motor, a rotating shaft, a 153, a stirring frame, a filter screen, a 16, a second filter screen, a 17 and a 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, removing floating: 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: bottle piece scraps and various precipitable impurities contained in the sewage are removed through various precipitation treatments, floating impurities such as label scraps in the sewage are removed through the floatation removal treatment, meanwhile, particle impurities in the sewage are completely removed through filtration and adsorption, and finally, chemical pollutants in the sewage are absorbed and decomposed by 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 present invention discloses a sewage purification apparatus 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 connected in sequence and are communicated with each other, the secondary sedimentation tank 2 is communicated with the floatation removing tank 3 through a first delivery pipe 6, and the floatation removing tank 3 is communicated with the ecological tank 4 through a second delivery pipe 7.
In this embodiment, a sewage inlet pipe 5 is installed at one side of the primary sedimentation tank 1, one end of the sewage inlet pipe 5 penetrates into the primary sedimentation tank 1 and is communicated with the primary sedimentation tank 1, sewage enters the primary sedimentation tank 1 through the sewage inlet pipe 5, a slow flow component 9 is arranged in the primary sedimentation tank 1, the slow flow component 9 comprises a slow flow cylinder 91 arranged in the primary sedimentation tank 1, the slow flow cylinder 91 is installed on the side wall, close to the sewage inlet pipe 5, in the primary sedimentation tank 1, the sewage inlet pipe 5 penetrates into the side wall of the primary sedimentation tank 1 and the side wall of the slow flow cylinder 91 in sequence and is communicated with the 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 of each slow flow plate 92, the connecting wires 93 are hemp ropes, the connecting wires 93 limit the movement of the slow flow plates 92 to avoid the slow flow plates 92 from deviating from the side wall of the slow flow cylinder 91, and the upper and lower ends of each slow flow plate 92 are fixed on the inner side wall of the slow flow cylinder 91 through the connecting wires 93, and a water inlet pipe 94 is provided with a water hole 94 far away from the sewage inlet pipe 91; 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 sedimentation effect of rivers fluctuation by a wide margin in the one-level sedimentation tank, keep the stability that the one-level sedimentation tank depositd.
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 the entering to reduce traction force and conveniently goes up and down in the below 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 scrapes 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; scrape the output of sediment motor 132 and penetrate and remove 3 lateral walls in superficial pond and scrape sediment roller 131 fixed connection, it is provided with a plurality of scum boards 133 around scraping the even setting of sediment roller 131 circumference to scrape sediment roller 131 surface, scum board 133 welded fastening is on scraping sediment roller 131, scum board 133 is the network structure that can supply sewage to pass through, inside scum board 133 can just penetrate the water with sewage contact, the other end of scum board 133 extends and removes 3 outsides in superficial 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; get rid of through scraping the showy impurity of sediment subassembly in to the sewage, guarantee that the stability of floater in the sewage is got 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 bubbles are discharged more stably, 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 controlling the coverage of the phytoplankton in the cultivation area to be 100-180% ensures that the phytoplankton can purify sewage most effectively, in this embodiment, the coverage of the phytoplankton in the cultivation area is controlled to be 150%.
Through the technical scheme, sewage enters into the ecological pool through the second conveyer pipe from removing the superficial pond after removing the floating treatment, at first filter the sewage through first filter screen, 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 district of breeding, floating plants decomposes the absorption of harmful chemical substance in the sewage in the district of 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 (6)
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, removing floating: 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 subjected to the flotation removal treatment enters an ecological pool, firstly, the sewage is filtered again through a first filter screen to remove impurities in the sewage, then, the 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;
the purification equipment in the purification process comprises a primary sedimentation tank, a secondary sedimentation tank, a floating removal tank and an ecological tank according to a purification sequence, wherein the primary sedimentation tank, the secondary sedimentation tank, the floating removal tank and the ecological tank are sequentially connected, the secondary sedimentation tank is communicated with the floating removal tank through a first conveying pipe, and the floating removal tank is communicated with the ecological tank through a second conveying pipe; a sewage discharge assembly is arranged in the secondary sedimentation tank and comprises a sewage storage mechanism and a lifting mechanism for controlling the sewage storage mechanism to lift; 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 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;
the sewage storage mechanism comprises a sewage collection plate and a bottom plate arranged at the lower end of the sewage collection plate, the sewage collection plate and the bottom plate are both contacted with a side wall box of the secondary sedimentation tank, the sewage collection plate and the bottom plate are arranged at intervals, a sewage storage cavity is formed between the sewage collection plate and the bottom plate, the sewage collection plate and the bottom plate are connected through a rubber column, and the upper end and the lower end of the rubber column are respectively bonded and fixed with the sewage collection plate and the bottom plate; the upper end of the sewage collecting plate is provided with a plurality of sewage guide piers which are uniformly arranged at intervals, and a sewage inlet is formed between the sewage guide piers of the sewage collecting plate;
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 sewage collecting plate is also provided with a scraper which is in contact with the inner wall of the secondary sedimentation tank;
in step S2, the method further includes the steps of:
after partial impurities in sewage are removed through the sedimentation of the primary sedimentation tank, the sewage flows into the secondary sedimentation tank through the overflow groove, the sedimentation and impurity removal treatment is carried out again in the secondary sedimentation tank, the impurities are precipitated in the secondary sedimentation tank and are contacted with the sewage collecting plate, the sludge impurities enter the sewage storage cavity through the sewage inlet after being drained through the sewage draining pier, and the sludge impurities stored in the sewage storage cavity are cleaned through the movement of the sewage storage mechanism driven by the lifting mechanism;
wherein, store up dirty mechanism lift at elevating system control, open the air vent for the air vent of below gets into gaseous traction force that reduces the lift, and opening and close of rubber buffer control air vent, and the scraper blade scrapes the inside wall of second grade sedimentation tank when elevating system pulling stores up dirty mechanism and rises, scrapes off the impurity of adsorbing on the lateral wall.
2. The sewage purification process for the production of green and environment-friendly PET bottle flakes as claimed in claim 1, wherein: 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.
3. The sewage purification process for the production of green and environment-friendly PET bottle flakes as claimed in claim 2, wherein: 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.
4. The sewage purification process for the production of green and environment-friendly PET bottle flakes as claimed in claim 2, wherein: 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.
5. The process for purifying sewage in the production of green and environment-friendly PET bottle flakes as claimed in claim 1, wherein: 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.
6. The sewage purification process for the production of green and environment-friendly PET bottle flakes as claimed in claim 5, wherein: phytoplankton is cultured in the culture area, and the coverage of the phytoplankton in the culture area is controlled to be 100 to 180 percent.
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| CN112374623A (en) * | 2020-11-10 | 2021-02-19 | 无锡工源环境科技股份有限公司 | Oil refining wastewater oil stain separation device using air floatation method |
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Effective date of registration: 20240717 Address after: Room 201, Building 2, No. 36 Yulong Road, Qujiang District, Quzhou City, Zhejiang Province, China 324000 Patentee after: Quzhou Tongheng Recycling Technology Development Co.,Ltd. Country or region after: China Address before: No. 36, Yulong Road, Qujiang District, Quzhou City, Zhejiang Province Patentee before: Zhejiang TONGHENG Environmental Protection Technology Co.,Ltd. Country or region before: China |