CN117645337A - Advection type air floatation system and process based on sewage treatment - Google Patents
Advection type air floatation system and process based on sewage treatment Download PDFInfo
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- CN117645337A CN117645337A CN202311749629.1A CN202311749629A CN117645337A CN 117645337 A CN117645337 A CN 117645337A CN 202311749629 A CN202311749629 A CN 202311749629A CN 117645337 A CN117645337 A CN 117645337A
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- 239000010865 sewage Substances 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000005273 aeration Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000007921 spray Substances 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000010802 sludge Substances 0.000 claims description 40
- 238000001914 filtration Methods 0.000 claims description 28
- 238000007599 discharging Methods 0.000 claims description 23
- 150000001875 compounds Chemical class 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 15
- 239000004576 sand Substances 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 10
- 238000007790 scraping Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 7
- 239000013049 sediment Substances 0.000 claims description 7
- 239000012466 permeate Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 238000012958 reprocessing Methods 0.000 claims description 2
- 239000003651 drinking water Substances 0.000 description 10
- 235000020188 drinking water Nutrition 0.000 description 10
- 238000010992 reflux Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 241000220317 Rosa Species 0.000 description 7
- 210000003437 trachea Anatomy 0.000 description 6
- 238000005188 flotation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- C02F1/001—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
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- 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)
- Physical Water Treatments (AREA)
Abstract
The invention relates to the technical field of sewage treatment, and discloses a advection type air floatation system and a process thereof based on sewage treatment, wherein the advection type air floatation system comprises a treatment tank; according to the invention, the high aeration assembly is arranged, when the air floatation scum treatment is carried out, the first rotary roller rotates and can drive the composite wheel to rotate under the action of the first driving belt wheel and the first belt, then the composite wheel is meshed with the driven gear to drive the movable pipe to rotate, the movable branch pipe and the movable head are utilized to slowly stir sewage in the treatment tank, and the aeration opening started on the movable head is utilized to carry out aeration, so that the fluidity of the sewage is increased; under the action of the liquid pump, sewage inside the treatment tank and the filter tank is respectively sucked by the first water suction pipe and the second water suction pipe, then water is supplied to the tubular spray head through the water supply pipe, the water is circulated to the inside of the treatment tank through the tubular spray head, and meanwhile, the filter screen plate is washed and cleaned.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a advection type air floatation system and a advection type air floatation process based on sewage treatment.
Background
The air flotation machine works on the principle that tiny bubbles are generated by injecting high-pressure water dissolution gas into sewage, and then the tiny bubbles are injected into the sewage. These micro-bubbles will adsorb suspended matter in the sewage and, due to the buoyancy of the bubbles, float the suspended matter up to the sewage surface. Then, suspended matters floating on the surface of the sewage can be salvaged out, so that the effects of removing and purifying suspended matters in the sewage are realized. The method can effectively remove suspended matters in the sewage, improve the water quality and achieve the aim of purifying the sewage. Meanwhile, the air floatation machine can be also used for treating industrial wastewater and domestic sewage, and is very effective sewage treatment equipment. The existing air floatation system of the air floatation machine has the following problems when in use:
in the current air flotation system of the air flotation machine, tiny bubbles dissolved in high-pressure water are often utilized, and the bubbles are injected into sewage in an aeration mode. These micro-bubbles will adsorb suspended substances in the sewage, making them bubble buoyant, thus floating the suspended substances up to the water surface. Subsequently, suspended matter floating on the water surface can be removed, thereby achieving the purpose of purifying sewage.
However, in the practical use process, when sewage treatment is performed, the sewage treatment efficiency is low by simply introducing micro-bubble aeration for sewage air floatation treatment, and the sewage generally contains a large amount of sediment which is accumulated in a treatment tank and is difficult to treat, so that a advection type air floatation system and a process for sewage treatment are provided, and the problems are needed to be solved.
Disclosure of Invention
The invention aims to provide a advection type air floatation system and a process thereof for sewage treatment so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a advection type air floatation system based on sewage treatment and a process thereof comprise a treatment tank, wherein one end of the treatment tank is fixedly connected with a water inlet pipe, the other end of the treatment tank is fixedly connected with a sewage discharge pipe, the inner side of one end of the treatment tank is fixedly connected with a sewage discharge inner plate, and the treatment tank is provided with
The sewage disposal assembly is arranged at the top of the treatment tank, a fixed belt is movably arranged between the first rotary roller and the second rotary roller by arranging the first rotary roller, the second rotary roller and a driving motor, a plurality of scraping plates are fixed on the outer side of the fixed belt, the driving motor drives the first rotary roller to rotate, and then the fixed belt fixed on the first rotary roller and the second rotary roller drives the scraping plates to scrape scum floating on the surface of the treatment tank;
the high aeration assembly is arranged on the inner side and the outer side of the treatment tank, the Gao Baoqi assembly is provided with a movable pipe, a movable branch pipe, a movable head and an aeration port, gas is introduced into the movable pipe when the high aeration assembly is used, then the movable head is discharged through the movable branch pipe, aeration is discharged through the aeration port, and meanwhile the movable pipe can drive the movable head at one end of the movable branch pipe to rotate under the driving action of a driving motor of the pollution discharge assembly, and a large amount of bubbles are generated when the liquid passes through the aeration port by utilizing the impact of the aeration port and the liquid in the treatment tank, so that the air floatation efficiency is improved;
the sludge treatment assembly is arranged at the inner side and the bottom of one end of the treatment tank, the sludge treatment assembly is provided with a buffer tank, a filtering top plate and a filter box, sewage discharged into the treatment tank through a water inlet pipe firstly enters the buffer tank, then permeates into the treatment tank through the filtering top plate, and sludge remained in the buffer tank is discharged into the filter box for filtering treatment;
the reflux assembly is arranged on the outer side of the treatment tank, the reflux assembly is provided with a liquid pump, the liquid pump is utilized to suck the treatment tank and the filter tank, then the reflux assembly is arranged in the treatment tank through a pipeline reflux passage, the mobility of sewage in the treatment tank is improved, the generation of sediment is reduced, and meanwhile, the arranged filter top plate can be flushed, so that the sludge blockage is prevented.
Optionally, the high aeration subassembly still includes dissolved air tank, air compressor, the interface of ventilating, driven gear, composite wheel, first driving pulley and first belt, dissolved air tank and air compressor fixed mounting reprocess pond one side, dissolved air tank input and air compressor output fixed mounting have first trachea, dissolved air tank output fixed mounting have the second trachea the cover of second trachea one end is equipped with the fixed cap, the interface of ventilating is seted up in processing pond one side, movable tube one end is rotated and is connected in the interface inboard of ventilating, fixed cap and the interface of ventilating adopt screw engagement to fix second trachea one end at the interface one end of ventilating, driven gear fixed mounting is at movable tube one end, composite wheel rotates and is connected in processing pond inboard, first driving pulley fixed mounting is at first rotatory roller one end outer wall, first belt movable mounting is between composite wheel and first driving pulley.
Optionally, the movable pipe rotates to be connected in the treatment tank inboard, movable branch pipe one end fixed connection is at the movable pipe outer wall, movable head fixed connection is at movable pipe one end, the aeration mouth runs through in movable head axle center department.
Optionally, the compound wheel meshes with driven gear, first driving pulley matches with the compound wheel through the setting of first belt.
Optionally, the first rotatory roller and the second rotatory roller rotate and connect at the treatment tank top, driving motor fixed mounting is in treatment tank top one side, driving motor output shaft one end and first rotatory roller one end phase-match.
Optionally, the sludge treatment subassembly still includes blowdown screw rod, second driving pulley and mud pipe, blowdown screw rod rotates to be connected in the buffer tank bottom, second driving pulley fixed mounting is in first rotatory roller one end, mud pipe one end is linked together with the inboard bottom of buffer tank, the mud pipe other end is linked together with filter tank one side top, blowdown screw rod one end fixed mounting has driven pulleys, movable mounting has the second belt between driven pulleys and the second driving pulley, the second driving pulley passes through the setting and the driven pulleys phase-match of second belt.
Optionally, the inboard fixed mounting of rose box has the collection funnel, the collection funnel is located mud pipe output bottom, the inboard fixedly connected with filter screen plate of rose box, filter sand has been seted up at the filter screen plate top, rose box one side fixed mounting has fixing bolt, fixing bolt one end fixed mounting has flower shape fixation nut, the collection funnel passes through under the cooperation effect of fixing bolt and flower shape fixation nut fixed mounting at the rose box inboard.
Optionally, the backward flow subassembly still includes backward flow house steward, fixed head, first drinking-water pipe, second drinking-water pipe, delivery pipe, tubular shower nozzle, drain pipe and valve, backward flow house steward fixed connection is in treatment tank one end bottom, fixed head fixed mounting is in backward flow house steward one end, first drinking-water pipe fixed mounting is between liquid pump and fixed head, second drinking-water pipe fixed mounting is between rose box and first drinking-water pipe, delivery pipe one end fixed mounting is at the liquid pump output, tubular shower nozzle input fixed mounting is at the delivery pipe output, delivery pipe one end fixed mounting is in fixed head one end, valve fixed mounting is in the drain pipe middle part.
Optionally, first drinking-water pipe one end is linked together with the return manifold through the setting of fixed head, first drinking-water pipe other end fixed mounting is in the liquid pump suction end, second drinking-water pipe one end is linked together with first drinking-water pipe inboard, the second drinking-water pipe other end is linked together with the inboard bottom of rose box, tubular shower nozzle output is located the filtration roof top, drain pipe one end is through the setting of fixed head and return manifold assorted.
A process based on a horizontal flow type air floatation system for sewage treatment specifically comprises the following steps:
step one: firstly, sewage is discharged into a buffer tank through a water inlet pipe, then, when the sewage passes through the top of the buffer tank, the sewage permeates into a treatment tank through a filtering top plate, and when the sewage reaches a certain height, sewage treatment is started;
step two: then, under the action of an air compressor and a dissolved air tank, the first air pipe and the second air pipe are utilized to ventilate the movable pipe, so that the inside of the treatment tank is aerated to carry out air floatation treatment, then the driving motor drives the first rotary roller to rotate, then the fixed belt is driven to move, and then scum generated on the surface of the treatment tank is scraped into a sewage inner plate by utilizing a scraping plate and then discharged through the sewage pipe;
step three: when the scum is processed, the first rotary roller rotates and can drive the composite wheel to rotate under the action of the first driving belt wheel and the first belt, then the composite wheel is meshed with the driven gear to drive the movable pipe to rotate, the movable branch pipe and the movable head are utilized to slowly stir sewage in the processing pool, and the aeration opening started on the movable head is utilized to perform aeration, so that the mobility of the sewage is increased, the precipitation of sewage is avoided, the coverage area of aeration micro bubbles is increased, and the efficiency of sewage air floatation processing is improved;
step four: meanwhile, when the first rotating roller rotates, the second driving belt wheel and the second belt are utilized to drive the driven belt wheel to rotate, then the sewage discharging screw is driven to rotate, residual sludge filtered by the filtering top plate is pushed to the sludge discharging pipe by the sewage discharging screw, then the sludge is discharged into a collecting funnel arranged in the filter box from one end of the sludge discharging pipe, filtered by a net structure at the bottom of the collecting funnel, filtered sewage is further filtered by filtering sand, and finally flows to the bottom of the filter box through the filtering net plate;
step five: finally, sewage in the treatment tank and filtered sewage at the bottom of the filter tank are pumped by the first water pumping pipe and the second water pumping pipe under the action of the liquid pump, the sewage in the treatment tank and the filter tank is pumped by the first water pumping pipe and the second water pumping pipe respectively, then water is supplied to the tubular spray head through the water supply pipe, the water is circulated to the inside of the treatment tank through the tubular spray head, the filter screen plate is washed and cleaned, and redundant sewage is discharged through the water drainage pipe after the work is completed.
The invention has at least the following beneficial effects:
(1) According to the scheme, the high aeration assembly is arranged, specifically, when the air floatation scum treatment is carried out, the first rotary roller rotates and can drive the composite wheel to rotate under the action of the first driving belt wheel and the first belt, then the composite wheel is meshed with the driven gear to drive the movable pipe to rotate, the movable branch pipe and the movable head are utilized to slowly stir sewage in the treatment tank, and meanwhile, the aeration is carried out by utilizing the aeration opening started on the movable head, so that the fluidity of the sewage is increased, the sewage precipitation is avoided, the coverage area of aeration tiny bubbles is improved, and the efficiency of the air floatation treatment of the sewage is improved;
(2) According to the scheme, the sludge treatment assembly is arranged, specifically, when the first rotary roller rotates, the second driving belt pulley and the second belt are utilized to drive the driven belt pulley to rotate, then the sewage discharge screw is driven to rotate, residual sludge filtered by the filtering top plate is pushed to the sludge discharge pipe by the sewage discharge screw, then the residual sludge is discharged into the collecting hopper arranged in the filter box from one end of the sludge discharge pipe, is filtered through the net structure at the bottom of the collecting hopper, and then filtered sewage is further filtered through filtering sand, finally flows to the bottom of the filter box through the filtering net plate, and timely treats and purifies the sludge, so that the sludge is conveniently treated, and the working efficiency is further improved;
(3) According to the scheme, the reflux assembly is arranged, specifically, under the action of the liquid pump, sewage inside the treatment tank and the filter tank is respectively sucked by the first water suction pipe and the second water suction pipe, then water is supplied to the tubular spray head through the water supply pipe, the tubular spray head circulates to the inside of the treatment tank, and meanwhile, the filter screen plate is washed and cleaned, so that sediment can be effectively prevented from sinking, the sewage mobility is further improved, and the sewage treatment effect is improved;
(4) This scheme is through setting up blowdown subassembly, and is specific, utilizes driving motor to drive first rotatory roller and rotates, then drives the fixed band activity, then utilizes the dross that the scraper blade produced on the surface of the treatment tank to scrape into blowdown inner panel, then is being discharged through the blow off pipe, and each part of drive motor accessible first rotatory roller through belt drive simultaneously, each part intercommunication cooperation, simple structure facilitates the use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art
FIG. 1 is a schematic view of the front side structure of the present invention;
FIG. 2 is a schematic view of the rear side structure of the present invention;
FIG. 3 is an exploded view of the front side partial structure of the present invention;
FIG. 4 is a right side schematic view of the present invention;
FIG. 5 is a right side partial structural cross-sectional view of the present invention;
FIG. 6 is a left side partial structural cross-sectional view of the present invention;
FIG. 7 is a rear partial structural cross-sectional view of the present invention;
FIG. 8 is an exploded view of the front bottom partial structure of the present invention;
FIG. 9 is a schematic view of the outside structure of the movable pipe according to the present invention;
FIG. 10 is a schematic view of the composite wheel structure of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a treatment pool; 101. a water inlet pipe; 102. a blow-down pipe; 103. a sewage disposal inner plate; 201. a first rotating roller; 202. a second rotating roller; 203. a fixing belt; 204. a scraper; 205. a driving motor; 301. a dissolved air tank; 302. an air compressor; 303. a first air tube; 304. a second air pipe; 305. a fixing cap; 306. a ventilation interface; 307. a movable tube; 3071. a movable branch pipe; 308. a movable head; 309. an aeration port; 310. a driven gear; 312. a compound wheel; 313. a first driving pulley; 314. a first belt; 401. a buffer pool; 402. a sewage discharging screw; 403. a driven pulley; 404. a second driving pulley; 405. a second belt; 406. a mud pipe; 407. a filter box; 408. a collection funnel; 409. a filter screen plate; 410. filtering sand; 411. a fixing bolt; 412. a flower-shaped fixing nut; 413. a filter top plate; 501. a liquid pump; 502. a return header; 503. a fixed head; 504. a first water suction pipe; 505. a second water suction pipe; 506. a water supply pipe; 507. a tubular spray head; 508. a drain pipe; 509. and (3) a valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-10, the invention provides a advection type air floatation system and a process based on sewage treatment, comprising a treatment tank 1, wherein one end of the treatment tank 1 is fixedly connected with a water inlet pipe 101, the other end of the treatment tank 1 is fixedly connected with a sewage discharge pipe 102, the inner side of one end of the treatment tank 1 is fixedly connected with a sewage discharge inner plate 103, and the treatment tank 1 is provided with.
The high aeration assembly is arranged on the inner side and the outer side of the treatment tank 1, and is provided with a movable pipe 307, a movable branch pipe 3071, a movable head 308 and an aeration port 309, when the high aeration assembly is used, gas is introduced into the movable pipe 307, then the movable head 308 is discharged through the movable branch pipe 3071, aeration is discharged through the aeration port 309, and simultaneously the movable pipe 307 can drive the movable head 308 at one end of the movable branch pipe 3071 to rotate under the driving action of a driving motor 205 of the pollution discharge assembly, and a large amount of bubbles are generated by the liquid passing through the aeration port 309 by utilizing the impact of the aeration port 309 and the liquid in the treatment tank 1, so that the air floatation efficiency is improved;
in some embodiments, referring to the figures, the high aeration assembly further comprises a dissolved air tank 301, an air compressor 302, a ventilation interface 306, a driven gear 310, a compound wheel 312, a first driving pulley 313 and a first belt 314, wherein the dissolved air tank 301 and the air compressor 302 are fixedly arranged on one side of the reprocessing pool 1, a first air pipe 303 is fixedly arranged at the input end of the dissolved air tank 301 and the output end of the air compressor 302, a second air pipe 304 is fixedly arranged at the output end of the dissolved air tank 301, a fixed cap 305 is sleeved at one end of the second air pipe 304, the ventilation interface 306 is arranged on one side of the processing pool 1, one end of the movable pipe 307 is rotatably connected on the inner side of the ventilation interface 306, one end of the second air pipe 304 is fixed on one end of the ventilation interface 306 by adopting screw engagement of the fixed cap 305 and the ventilation interface 306, driven gear 310 fixed mounting is in movable tube 307 one end, compound wheel 312 rotates to be connected in the treatment tank 1 inboard, first driving pulley 313 fixed mounting is at first rotatory roller 201 one end outer wall, first belt 314 movable mounting is between compound wheel 312 and first driving pulley 313, movable tube 307 rotates to be connected in treatment tank 1 inboard, movable branch 3071 one end fixed connection is at movable tube 307 outer wall, movable head 308 fixed connection is at movable tube 307 one end, aeration port 309 runs through in movable head 308 axle center department, compound wheel 312 meshes with driven gear 310, first driving pulley 313 matches with compound wheel 312 through the setting of first belt 314.
It should be noted that, setting up high aeration assembly and can improve the coverage rate of microbubble, increase the mobility of the inside sewage of treatment tank 1, avoid suspended particles in the sewage to produce the sediment, thereby improve the treatment effeciency to suspended particles in the sewage, through the effect of air compressor 302 and dissolved air tank 301 that sets up, utilize first trachea 303 and second trachea 304 to ventilate to movable tube 307, make the inside aeration of treatment tank 1 carry out the air supporting processing, simultaneously under the cooperation of blowdown assembly, the driving motor 205 of blowdown assembly drives the rotatory in-process of first rotatory roller 201, can drive the rotation of first driving pulley 313 of installing in first rotatory roller 201 one end, then first driving pulley 313 is rotatory through the first belt 314 of setting, then compound wheel 312 and driven gear 310 mesh, drive movable tube 307 rotates, and utilize movable branch 3071 and movable head 308 to slowly stir the sewage in the treatment tank 1, utilize the aeration port 309 that starts on the movable head 308 to aerate, with the mobility of increase the sewage, avoid the sediment, the coverage area of tiny bubble sewage has been improved, sewage air supporting processing efficiency.
The sewage disposal assembly is arranged at the top of the treatment tank 1, a fixed belt 203 is movably arranged between the first rotary roller 201 and the second rotary roller 202 through the arrangement of a first rotary roller 201, a second rotary roller 202 and a driving motor 205, a plurality of scraping plates 204 are fixed on the outer side of the fixed belt 203, the first rotary roller 201 is driven to rotate through the driving motor 205, and then the fixed belt 203 fixed on the first rotary roller 201 and the second rotary roller 202 drives the scraping plates 204 to scrape floating slag floating on the surface of the treatment tank 1;
in some embodiments, referring to fig. 1, 2, 3 and 4, the first rotating roller 201 and the second rotating roller 202 are rotatably connected to the top of the treatment tank 1, the driving motor 205 is fixedly installed on one side of the top of the treatment tank 1, and one end of the output shaft of the driving motor 205 is matched with one end of the first rotating roller 201.
It should be noted that, through setting up the blowdown subassembly, blowdown subassembly can in time discharge the dross that produces in the processing pond 1, simultaneously the driving motor 205 of blowdown subassembly is used as total drive part for each part communicates the cooperation each other, through the driving motor 205 of setting up, driving motor 205 work can drive the first rotatory roller 201 rotation of setting up, then drive the fixed band 203 activity, then utilize scraper blade 204 to scrape into blowdown inner panel 103 to the dross that processing pond 1 surface produced, then discharge through blow off pipe 102, when driving motor 205 drives first rotatory roller 201 rotation simultaneously, through belt drive, can drive other subassemblies work, each part communicates the cooperation each other, and a structure is simple, facilitate the use
The sludge treatment assembly is arranged at the inner side and the bottom of one end of the treatment tank 1, sewage discharged into the treatment tank 1 through the water inlet pipe 101 firstly enters the buffer tank 401, then permeates into the treatment tank 1 through the filter top plate 413, and sludge remained in the buffer tank 401 is discharged into the filter box 407 for filtering treatment;
in some embodiments, referring to fig. 5, 6, 7 and 8, the sludge treatment assembly further includes a sewage draining screw 402, a second driving pulley 404 and a sludge discharging tube 406, the sewage draining screw 402 is rotatably connected to the bottom of the buffer tank 401, the second driving pulley 404 is fixedly installed at one end of the first rotating roller 201, one end of the sludge discharging tube 406 is communicated with the bottom of the inner side of the buffer tank 401, the other end of the sludge discharging tube 406 is communicated with the top of one side of the filter box 407, a driven pulley 403 is fixedly installed at one end of the sewage draining screw 402, a second belt 405 is movably installed between the driven pulley 403 and the second driving pulley 404, the second driving pulley 404 is matched with the driven pulley 403 through the arrangement of the second belt 405, a collecting funnel 408 is fixedly installed at the inner side of the filter box 407, the collecting funnel 408 is located at the bottom of the output end of the sludge discharging tube 406, a filter screen 409 is fixedly connected to the inner side of the filter box 409, a filter sand 410 is provided at the top of the filter box 409, a fixing bolt 411 is fixedly installed at one side of the filter box 407, a flower-shaped fixing nut 412 is fixedly installed at one end of the fixing bolt 411, and the collecting funnel 408 is fixedly installed at the inner side of the filter box 407 under the cooperation of the flower-shaped fixing nut 412.
It should be noted that, through setting up sludge treatment subassembly, can in time handle the mud that is difficult to get rid of in the sewage, conveniently filter the processing efficiency of equipment to sewage can be further improved, in the in-process of work, first rotatory roller 201 is rotatory, can be with the cooperation effect of second driving pulley 404 and the second belt 405 of setting, it is rotatory to drive driven pulley 403, then it is rotatory to drive blowdown screw 402, the mud that remains after filtering through filter roof 413 is pushed to dredge pipe 406 by blowdown screw 402, then in the collection funnel 408 of the inside setting of filter box 407 is discharged from dredge pipe 406 one end, filter through the network structure of collection funnel 408 bottom, then the sewage of filtering carries out further filtration through filter sand 410, finally flow to the filter box 407 bottom through filter screen 409, wherein filter screen 409 and the network structure of collection funnel 408 bottom can adopt fine gauze, it can to prevent that mud and the filter sand 410 of setting from down, filter sand 410 can be used as filter material through its tiny granule and porous structure, can filter sewage water and remain in the filth.
The reflux component is arranged on the outer side of the treatment tank 1, and the reflux component pumps the treatment tank 1 and the filter box 407 by the liquid pump 501 through the liquid pump 501, and then the reflux component improves the fluidity of sewage in the treatment tank 1 and reduces the generation of sediment through the pipeline reflux channel treatment tank 1, and simultaneously can flush the arranged filter top plate 413 so as to prevent sludge blockage;
in some embodiments, referring to fig. 1, 2, 3, and 4, the reflow assembly further includes a reflow manifold 502, a fixing head 503, a first water suction pipe 504, a second water suction pipe 505, a water supply pipe 506, a tubular nozzle 507, a water drain 508, and a valve 509, wherein the reflow manifold 502 is fixedly connected to the bottom of one end of the processing tank 1, the fixing head 503 is fixedly installed at one end of the reflow manifold 502, the first water suction pipe 504 is fixedly installed between the liquid pump 501 and the fixing head 503, the second water suction pipe 505 is fixedly installed between the filter box 407 and the first water suction pipe 504, one end of the water supply pipe 506 is fixedly installed at the output end of the liquid pump 501, the input end of the tubular nozzle 507 is fixedly installed at the output end of the water supply pipe 506, one end of the water drain 508 is fixedly installed at one end of the fixing head 503, the valve 509 is fixedly installed in the middle of the water drain 508, one end of the first water suction pipe 504 is fixedly installed at the suction end of the liquid pump 501 through the setting of the fixing head 503, one end of the second water suction pipe 505 is communicated with the inner side of the first water suction pipe 504, the other end of the second water suction pipe 505 is communicated with the inner bottom of the filter box 407, one end of the tubular nozzle 507, one end of the output end of the tubular nozzle 507 is fixedly installed at the output end 413 of the top of the filter box 507 is located at the output end of the output of the filter head 507, which is matched with the water inlet of the setting of the main pipe 503 through the fixing head 503.
It should be noted that, through having set up the reflux subassembly, can be by a wide margin increase the mobility of sewage, effectively prevent the precipitate sinking, improve the treatment effect to sewage, through the liquid pump 501 that sets up, utilize first suction pipe 504 and second suction pipe 505 to suck the inside sewage of treatment tank 1 and rose box 407 respectively, then the water supply is supplied to tubular shower nozzle 507 through delivery pipe 506, circulate to the inside of treatment tank 1 through tubular shower nozzle 507, wash the clearance to filter screen 409 simultaneously, reduce the maintenance number of times of filter screen 409, reduce maintenance cost.
The working flow and principle of the invention are as follows: when in use, firstly sewage is discharged into the buffer tank 401 through the water inlet pipe 101, then when the sewage passes through the top of the buffer tank 401, the sewage is permeated into the treatment tank 1 through the filtering top plate 413, sewage treatment is started when the sewage reaches a certain height, then under the action of the air compressor 302 and the dissolved air tank 301, the first air pipe 303 and the second air pipe 304 are utilized to ventilate the movable pipe 307, so that the air flotation treatment is carried out in the treatment tank 1, then the driving motor 205 drives the first rotary roller 201 to rotate, then drives the fixed belt 203 to move, then the scum generated on the surface of the treatment tank 1 is scraped into the inner blowdown plate 103 by the scraping plate 204, then discharged through the sewage discharge pipe 102, the first rotary roller 201 rotates while the scum is treated, the compound wheel 312 is driven to rotate under the action of the first driving pulley 313 and the first belt 314, then the compound wheel 312 is meshed with the driven gear 310 to drive the movable pipe 307 to rotate, the movable branch pipe 3071 and the movable head 308 are utilized to slowly stir sewage in the treatment tank 1, the aeration is carried out by utilizing the aeration port 309 started on the movable head 308 to increase the fluidity of the sewage, prevent sewage from precipitating, improve the coverage area of aeration tiny bubbles, improve the efficiency of sewage air floatation treatment, and drive the second driving belt wheel 404 to rotate when the first rotating roller 201 rotates, the second driving belt wheel 404 and the second belt 405 are utilized to drive the driven belt wheel 403 to rotate, then the sewage discharging screw 402 is driven to rotate, the residual sludge filtered by the filtering top plate 413 is pushed to the sludge discharging pipe 406 by the sewage discharging screw 402, then the sludge is discharged into the collecting funnel 408 arranged in the filter box 407 from one end of the sludge discharging pipe 406, and is filtered by the net structure at the bottom of the collecting funnel 408, the filtered sewage is further filtered by the filter sand 410, finally flows to the bottom of the filter box 407 through the filter screen 409, then under the action of the liquid pump 501, the sewage in the treatment tank 1 and the filter box 407 is pumped by the first pumping pipe 504 and the second pumping pipe 505 respectively, then water is supplied to the tubular spray nozzle 507 through the water supply pipe 506, and is circulated to the inside of the treatment tank 1 through the tubular spray nozzle 507, meanwhile, the filter screen 409 is washed and cleaned, and after the work is completed, the redundant sewage is discharged through the water discharge pipe 508.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Advection type air supporting system based on sewage treatment is used, characterized by, including handling pond (1), handling pond (1) one end fixedly connected with inlet tube (101), handling pond (1) other end fixedly connected with blow off pipe (102), handling pond (1) one end inboard fixedly connected with blowdown inner panel (103), handling pond (1) is provided with
The sewage disposal assembly is arranged at the top of the treatment pool (1), a fixed belt (203) is movably arranged between the first rotary roller (201) and the second rotary roller (202) through the arrangement of the first rotary roller (201), the second rotary roller (202) and a driving motor (205), a plurality of scraping plates (204) are fixed on the outer side of the fixed belt (203), the driving motor (205) drives the first rotary roller (201) to rotate, and then the fixed belt (203) fixed on the first rotary roller (201) and the second rotary roller (202) drives the scraping plates (204) to scrape scum floating on the surface of the treatment pool (1);
the high aeration assembly is arranged on the inner side and the outer side of the treatment tank (1), the Gao Baoqi assembly is provided with a movable pipe (307), a movable branch pipe (3071), a movable head (308) and an aeration port (309), gas is introduced into the movable pipe (307) when the high aeration assembly is used, then the movable head (308) is discharged through the movable branch pipe (3071), aeration is discharged through the aeration port (309), and meanwhile the movable pipe (307) can drive the movable head (308) at one end of the movable branch pipe (3071) to rotate under the driving action of a driving motor (205) of the sewage disposal assembly, and a large amount of bubbles are generated by the liquid passing through the aeration port (309) by utilizing the impact of the aeration port (309) and the liquid in the treatment tank (1), so that the air floatation efficiency is improved;
the sludge treatment assembly is arranged at the inner side and the bottom of one end of the treatment tank (1), and the sludge treatment assembly is provided with a buffer tank (401), a filtering top plate (413) and a filter box (407), sewage discharged into the treatment tank (1) through a water inlet pipe (101) firstly enters the buffer tank (401), then permeates into the treatment tank (1) through the filtering top plate (413), and then the sludge remained in the buffer tank (401) is discharged into the filter box (407) for filtering treatment;
the backflow component is arranged on the outer side of the treatment tank (1), the backflow component is used for sucking the treatment tank (1) and the filter box (407) through the liquid pump (501), then the flow of sewage in the treatment tank (1) is improved through the pipeline back flow channel treatment tank (1), generation of sediment is reduced, and meanwhile the arranged filter top plate (413) can be flushed, so that sludge blockage is prevented.
2. A advection-type air floatation system for sewage treatment according to claim 1, wherein: the high aeration assembly further comprises a dissolved air tank (301), an air compressor (302), a ventilation interface (306), a driven gear (310), a composite wheel (312), a first driving pulley (313) and a first belt (314), wherein the dissolved air tank (301) and the air compressor (302) are fixedly arranged on one side of the reprocessing pool (1), the input end of the dissolved air tank (301) and the output end of the air compressor (302) are fixedly provided with a first air pipe (303), the output end of the dissolved air tank (301) is fixedly provided with a second air pipe (304) and one end of the second air pipe (304) is sleeved with a fixing cap (305), one end of the ventilation interface (306) is arranged on one side of the processing pool (1), one end of the movable pipe (307) is rotatably connected on the inner side of the ventilation interface (306), one end of the second air pipe (304) is fixedly arranged on one end of the ventilation interface (306) through threaded engagement, one end of the driven gear (310) is fixedly arranged on one end of the movable pipe (307), one end of the composite wheel (312) is rotatably connected on the inner side of the processing pool (1), one end of the first driving pulley (201) is fixedly arranged on one end of the first driving pulley (201), the first belt (314) is movably mounted between the compound wheel (312) and the first drive pulley (313).
3. A advection-type air floatation system for sewage treatment according to claim 1, wherein: the movable pipe (307) is rotationally connected to the inner side of the treatment tank (1), one end of the movable branch pipe (3071) is fixedly connected to the outer wall of the movable pipe (307), the movable head (308) is fixedly connected to one end of the movable pipe (307), and the aeration port (309) penetrates through the axis of the movable head (308).
4. A advection-type air floatation system for sewage treatment according to claim 2, wherein: the compound wheel (312) is meshed with the driven gear (310), and the first driving belt wheel (313) is matched with the compound wheel (312) through the arrangement of a first belt (314).
5. A advection-type air floatation system for sewage treatment according to claim 1, wherein: the first rotating roller (201) and the second rotating roller (202) are rotatably connected to the top of the treatment tank (1), the driving motor (205) is fixedly arranged on one side of the top of the treatment tank (1), and one end of an output shaft of the driving motor (205) is matched with one end of the first rotating roller (201).
6. A advection-type air floatation system for sewage treatment according to claim 1, wherein: the sludge treatment assembly further comprises a sewage discharging screw (402), a second driving belt wheel (404) and a sludge discharging pipe (406), the sewage discharging screw (402) is rotationally connected to the bottom of the buffer pool (401), the second driving belt wheel (404) is fixedly arranged at one end of the first rotating roller (201), one end of the sludge discharging pipe (406) is communicated with the bottom of the inner side of the buffer pool (401), the other end of the sludge discharging pipe (406) is communicated with the top of one side of the filter box (407), a driven belt wheel (403) is fixedly arranged at one end of the sewage discharging screw (402), a second belt (405) is movably arranged between the driven belt wheel (403) and the second driving belt wheel (404), and the second driving belt wheel (404) is matched with the driven belt wheel (403) through the arrangement of the second belt (405).
7. A advection-type air floatation system for sewage treatment according to claim 1, wherein: the filter box (407) inboard fixed mounting has collection funnel (408), collection funnel (408) are located mud pipe (406) output bottom, filter box (407) inboard fixedly connected with filter screen plate (409), filter sand (410) have been seted up at filter screen plate (409) top, filter box (407) one side fixed mounting has fixing bolt (411), fixing bolt (411) one end fixed mounting has flower fixation nut (412), collection funnel (408) are through fixing bolt (411) and flower fixation nut's cooperation under fixed mounting in filter box (407) inboard.
8. A advection-type air floatation system for sewage treatment according to claim 1, wherein: the backflow assembly further comprises a backflow main (502), a fixing head (503), a first water suction pipe (504), a second water suction pipe (505), a water supply pipe (506), a tubular spray head (507), a water discharge pipe (508) and a valve (509), wherein the backflow main (502) is fixedly connected to one end bottom of the treatment pool (1), the fixing head (503) is fixedly arranged at one end of the backflow main (502), the first water suction pipe (504) is fixedly arranged between the liquid pump (501) and the fixing head (503), the second water suction pipe (505) is fixedly arranged between the filtering box (407) and the first water suction pipe (504), one end of the water supply pipe (506) is fixedly arranged at the output end of the liquid pump (501), the input end of the tubular spray head (507) is fixedly arranged at the output end of the water supply pipe (506), one end of the water discharge pipe (508) is fixedly arranged at one end of the fixing head (503), and the valve (509) is fixedly arranged at the middle part of the water discharge pipe (508).
9. A advection-type air floatation system for sewage treatment according to claim 8, wherein: the utility model discloses a filter device, including filter box (407), filter head (413), drain pipe (508), first suction pipe (504) one end is linked together with return manifold (502) through the setting of fixed head (503), first suction pipe (504) other end fixed mounting is at liquid pump (501) suction end, second suction pipe (505) one end is linked together with first suction pipe (504) inboard, second suction pipe (505) other end is linked together with filter box (407) inboard bottom, tubular shower nozzle (507) output is located filter head (413) top, drain pipe (508) one end is through the setting of fixed head (503) and return manifold (502) assorted.
10. The process based on a horizontal flow type air floatation system for sewage treatment according to claim 1, which is characterized by comprising the following steps:
step one: firstly, sewage is discharged into a buffer tank (401) through a water inlet pipe (101), then when the sewage passes through the top of the buffer tank (401), the sewage permeates into a treatment tank (1) through a filtering top plate (413), and when the sewage reaches a certain height, sewage treatment is started;
step two: then, under the action of an air compressor (302) and a dissolved air tank (301), a first air pipe (303) and a second air pipe (304) are utilized to ventilate a movable pipe (307) so that aeration inside a treatment tank (1) is subjected to air floatation treatment, then a driving motor (205) drives a first rotating roller (201) to rotate, then a fixed belt (203) is driven to move, and then scum generated on the surface of the treatment tank (1) is scraped into a sewage inner plate (103) by a scraping plate (204) and then discharged through a sewage pipe (102);
step three: when the scum is processed, the first rotary roller (201) rotates and drives the compound wheel (312) to rotate under the action of the first driving belt wheel (313) and the first belt (314), then the compound wheel (312) is meshed with the driven gear (310) to drive the movable pipe (307) to rotate, the movable branch pipe (3071) and the movable head (308) are utilized to slowly stir the sewage in the processing pool (1), and the aeration opening (309) started on the movable head (308) is utilized to perform aeration so as to increase the mobility of the sewage, prevent the sewage from precipitating, improve the coverage area of aeration tiny bubbles and improve the efficiency of sewage air floatation processing;
step four: meanwhile, when the first rotating roller (201) rotates, the second driving belt wheel (404) and the second belt (405) are utilized to drive the driven belt wheel (403) to rotate, then the sewage discharging screw (402) is driven to rotate, residual sludge filtered by the filtering top plate (413) is pushed to the sludge discharging pipe (406) by the sewage discharging screw (402), and then is discharged into a collecting funnel (408) arranged in the filtering box (407) from one end of the sludge discharging pipe (406), filtered by a net structure at the bottom of the collecting funnel (408), filtered sewage is further filtered by filtering sand (410), and finally flows to the bottom of the filtering box (407) by the filtering net plate (409);
step five: finally, under the action of a liquid pump (501), the sewage in the treatment tank (1) and the sewage filtered out from the bottom of the filter tank (407) are pumped by utilizing a first pumping pipe (504) and a second pumping pipe (505) respectively, then water is supplied to a tubular spray head (507) through a water supply pipe (506), the sewage is circulated into the treatment tank (1) through the tubular spray head (507), the filter screen plate (409) is washed and cleaned, and after the work is finished, the redundant sewage is discharged through a drain pipe (508).
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118062933A (en) * | 2024-03-12 | 2024-05-24 | 临沂市泓润环境检测有限公司 | Air supporting device for jet sewage treatment |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080308479A1 (en) * | 2007-06-13 | 2008-12-18 | Toyofumi Miyazaki | Biological treatment and filtration system equipment |
CN211847503U (en) * | 2020-03-23 | 2020-11-03 | 南京江岛环境科技研究院有限公司 | Urban sewage treatment device |
CN215310422U (en) * | 2021-06-15 | 2021-12-28 | 青岛华睿宏达环保有限公司 | Sludge treatment tank |
CN218025501U (en) * | 2022-07-21 | 2022-12-13 | 上海森态泽源环保有限公司 | Advection formula air supporting device based on sewage treatment usefulness |
CN117023748A (en) * | 2023-09-21 | 2023-11-10 | 宜兴市艾瑞泽环保科技有限公司 | Flocculation clarification sewage treatment system for sewage treatment |
-
2023
- 2023-12-18 CN CN202311749629.1A patent/CN117645337A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080308479A1 (en) * | 2007-06-13 | 2008-12-18 | Toyofumi Miyazaki | Biological treatment and filtration system equipment |
CN211847503U (en) * | 2020-03-23 | 2020-11-03 | 南京江岛环境科技研究院有限公司 | Urban sewage treatment device |
CN215310422U (en) * | 2021-06-15 | 2021-12-28 | 青岛华睿宏达环保有限公司 | Sludge treatment tank |
CN218025501U (en) * | 2022-07-21 | 2022-12-13 | 上海森态泽源环保有限公司 | Advection formula air supporting device based on sewage treatment usefulness |
CN117023748A (en) * | 2023-09-21 | 2023-11-10 | 宜兴市艾瑞泽环保科技有限公司 | Flocculation clarification sewage treatment system for sewage treatment |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118062933A (en) * | 2024-03-12 | 2024-05-24 | 临沂市泓润环境检测有限公司 | Air supporting device for jet sewage treatment |
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