CN112159036B - Multi-section jet aeration reactor and application thereof in treatment of viscose fiber wastewater - Google Patents
Multi-section jet aeration reactor and application thereof in treatment of viscose fiber wastewater Download PDFInfo
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- CN112159036B CN112159036B CN202011022122.2A CN202011022122A CN112159036B CN 112159036 B CN112159036 B CN 112159036B CN 202011022122 A CN202011022122 A CN 202011022122A CN 112159036 B CN112159036 B CN 112159036B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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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
- C02F7/00—Aeration of stretches of water
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Abstract
The invention discloses a multi-section jet aeration reactor and application thereof in viscose fiber wastewater treatment, belonging to the technical field of sewage treatment. The multi-section jet aeration reactor specifically comprises a biological selection area, a multi-stage aerobic aeration area, an aerobic sedimentation area and a multi-section jet aeration element arranged in the multi-stage aerobic aeration area, wherein the biological selection area, the multi-stage aerobic aeration area and the aerobic sedimentation area are sequentially connected in series. The reactor has the advantages of simple treatment process flow, few treatment structures, high transfer efficiency of dissolved oxygen (more than 30 percent), few operating equipment in an aerobic zone and the like, and greatly reduces the capital cost, the operating energy consumption and the maintenance cost. In addition, the invention adopts the jet aerator to solve the industrial problems that the biochemical aeration system is easy to scale and block the aerator, and the like, thereby having advantages in viscose fiber wastewater treatment and good application prospect.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a multi-section jet aeration reactor and application thereof in viscose fiber wastewater treatment.
Background
In recent years, the scale of artificial fiber products prepared by using cheap and abundant natural fibers such as bamboo, wood, cotton and the like as raw materials through series processes such as hydrolysis, cooking, bleaching, acid treatment, alkali bath and the like is getting larger and larger, and huge economic benefits are brought to the society. However, the environmental pressure caused by the scale-up will also increase, and the pollution situation is becoming more severe, wherein the viscose fiber wastewater with high suspended matter, high chroma, high COD and BOD, and high zinc generated in the production process is the most prominent. The direct discharge of such waste water not only destroys the surrounding ecological environment, but also affects the living environment and health of the surrounding residents. Therefore, the search for a proper method for treating the wastewater has important significance on the green sustainable development of the viscose industry.
Among them, the aerobic biochemical treatment process is favored in the viscose fiber wastewater treatment process due to its advantages of good treatment effect, high stability, low operation cost, etc. Meanwhile, in the operation process of the aerobic biochemical treatment process, aeration and oxygenation operations are usually required. Aeration can not only contact liquid in the pool with air to oxygenate, but also stir the liquid to accelerate the transfer of oxygen in the air to the liquid. In addition, the suspension in the tank can be prevented from sinking, and the contact of organic matters in the tank with microorganisms and dissolved oxygen is enhanced, so that the organic matters in the wastewater are fully oxidized and decomposed. However, with the large-scale and intensive development of viscose fiber industry, wastewater generated by the production of the viscose fiber is not only changed in the amount of wastewater, but also changed in the composition and concentration, and mass transfer and heat transfer caused by the increase of water treatment capacity are also changed. Therefore, aiming at the development characteristics of the viscose fiber industry and the characteristics of generated wastewater and combining the advantages of aerobic biochemical treatment process treatment, the novel multi-section jet aeration reactor for treating the viscose fiber wastewater has good application prospect.
Disclosure of Invention
Aiming at the technical problem, the invention provides a multi-section jet aeration reactor and application thereof in viscose fiber wastewater treatment.
The technical scheme of the invention is as follows: the multi-section jet aeration reactor comprises a biological selection area, a multi-stage aerobic aeration area, an aerobic sedimentation area and a multi-section jet aeration element which are sequentially connected in series, wherein the multi-section jet aeration element is arranged in the multi-stage aerobic aeration area;
a biological selection stirrer is arranged in the biological selection area; the multi-stage aerobic aeration zone is formed by connecting a plurality of aeration reaction zones in series end to end, and each aeration reaction zone is connected with a common waste gas treatment element through a connecting pipe; the bottom end of the aerobic sedimentation zone is connected with the biological selection zone, a sludge reflux pump is arranged at the joint, and an aerobic sedimentation sludge scraper is arranged in the aerobic sedimentation zone;
the multi-section jet aeration element comprises a plurality of jet aerators arranged in each aeration reaction zone, a self-aeration fan connected with each jet aerator, a plurality of biological jet circulating pumps which are in one-to-one correspondence with the aeration reaction zones and are connected with each jet aerator in the corresponding aeration reaction zone, the jet aerator comprises a mixed reaction main body, the upper end of which is provided with an air connector, the lower end of which is provided with a waste water connector, the side wall of which is evenly provided with a plurality of downward-inclined jet pipes along the circumferential direction, and jet nozzles arranged at the tail ends of the jet pipes, the fluidic nozzle both ends are equipped with joint ring respectively and wherein one end corresponds the joint ring is located the fluidic tube and with fluidic tube inner wall sliding connection, the fluidic nozzle lateral wall is around being equipped with the filter screen, and fluidic tube port department just surrounds being equipped with annular doctor-bar in the fluidic nozzle outside, the inside buffer spring who is connected with the joint ring that is equipped with of fluidic tube.
Furthermore, the biological selection area is provided with a spraying dosing element, the spraying dosing element comprises a position adjusting frame, a temporary storage cylinder, a plurality of dispersion spraying cylinders and a rotating motor, wherein the position adjusting frame is arranged on a fixed element outside one end of the position adjusting frame, the other end of the position adjusting frame is provided with a fixed ferrule, the side wall of the temporary storage cylinder is provided with a clamping ring which can be clamped at the upper end of the fixed ferrule, the upper end of the temporary storage cylinder is provided with an adding opening, the plurality of dispersion spraying cylinders are uniformly distributed on the periphery of the temporary storage cylinder and are communicated with the temporary storage cylinder along the circumferential direction, the side wall of the temporary storage cylinder is provided with a gear ring, the output shaft of the rotating motor is connected with a driving gear which is meshed with the gear ring, each dispersion spraying cylinder side wall is uniformly provided with a plurality of spraying openings along the circumferential direction, when nutrient salt or other medicines are required to be added into the biological selection area, the medicines in the temporary storage cylinder enter each dispersion spraying cylinder and are uniformly sprayed into sewage in the biological selection area through the corresponding spraying openings, at this moment, the motor drive driving gear is rotated in the start-up, drives a section of thick bamboo of keeping in simultaneously and takes place to rotate, stirs sewage and liquid medicine, and both mix with higher speed, and the rotation of cooperation biological selection mixer simultaneously avoids appearing the medicine and sprays the dead angle, improves the sewage treatment effect.
Further, a section of thick bamboo of keeping in all is equipped with solenoid valve and electron flowmeter with the junction of each dispersion spray drum, and a section of thick bamboo lateral wall of keeping in is equipped with the liquid level scale, through the medicine liquid level in the liquid level scale visual display section of thick bamboo of keeping in, and the convenient in time replenishment guarantees to add sufficient dose in the biological selection district, adds the dose in the biological selection district through solenoid valve and electron flowmeter accurate control, avoids adding too much messenger's water and causes secondary pollution.
Furthermore, each aeration reaction zone is provided with an air regulating valve which can be regulated according to the actual water quality of inlet water and outlet water, so that the actually required reaction residence time of the anoxic and aerobic functional zones can be redistributed as required, and the sewage treatment effect is improved.
Furthermore, a plurality of scum fishing elements are also arranged in the aerobic sedimentation zone, each scum fishing element comprises a mounting frame, a driving motor, a mounting loop bar and a fishing barrel, the mounting frame is arranged at the upper end of the aerobic sedimentation zone, the bottom end of the mounting frame is provided with a threaded rod along the horizontal direction, the driving motor drives the threaded rod to rotate, the mounting loop bar is sleeved outside the threaded rod and is in threaded connection with the threaded rod, the fishing barrel is connected with the bottom end of the mounting loop bar, the joint of the fishing barrel is provided with an electric telescopic rod, the bottom end of the fishing barrel is provided with a connecting port, the connecting port is connected with a containing box, the left side and the right side of the connecting port are symmetrically hinged with two splicing plates, the bottom end of each splicing plate is provided with a folding frame connected with the inner wall of the containing box, a hydraulic rod is arranged between every two adjacent folding frames, the driving motor drives the threaded rod to rotate, so that the mounting loop bar moves left and right on the threaded rod to complete the adjustment of the fishing position, when fishing is needed, through adjusting electric telescopic handle's extension and flexible and utilize the salvage of salvage section of thick bamboo completion dross, when accomplishing a salvage back, compress through starting two hydraulic stems, make two splice plate downward sloshines of symmetric distribution open, make the dross of salvaging fall to holding the incasement, then, start two hydraulic stems and extend, make two splice plate downward sloshines open the level concatenation will hold the case shutoff back, salvage next time, salvage the component through a plurality of dross and accomplish the salvage of different positions department dross, hold the dross that the case made the salvage and temporarily save wherein through the setting, conveniently in time clear up the salvage section of thick bamboo, reduce the number of times of artificial clearance salvage section of thick bamboo, improve dross salvage efficiency.
Further, the service area of the jet aerator is 9m2The distance between the bottom of the jet nozzle and the bottom of the tank is 500-750mm, and the service area of the jet aerator is controlled to be 9m2Left and right, the oxygen utilization rate can reach the best, and the sewage dissolved oxygen efficiency is improved.
Further, the multi-section jet aeration reactor can be applied to treatment of viscose waste water.
Further, air connection mouth and waste water connector department all are equipped with the dispersion impeller, just the dispersion impeller lateral wall evenly is equipped with a plurality of dispersion lugs, and every dispersion lug lateral wall is equipped with a plurality of dispersion holes, and a plurality of dispersion holes through corresponding on the dispersion lug will get into waste water and air in the mixed reaction main part and break up into the micromolecule, then both mix in the mixed reaction main part, and the oxygen in the micromolecule air after mixing is fully dissolved in rivers, improves sewage dissolved oxygen efficiency and biochemical treatment effect.
The working principle of the multi-section jet aeration reactor is as follows:
(1) viscose fiber wastewater firstly enters a biological selection area, nutrient salt and medicines are added into the biological selection area through a spraying and dosing element, sewage and the added nutrient salt and medicines are uniformly stirred through a biological selection stirrer, insoluble organic matters are hydrolyzed into soluble organic matters by utilizing the nutrient salt and the medicines, macromolecular organic matters are decomposed into micromolecular substances, and meanwhile, filamentous bacterium expansion can be effectively inhibited, and the sedimentation performance of activated sludge is improved;
(2) the water flow treated by the biological selection area naturally enters a multi-stage aerobic aeration area, specifically sequentially passes through each aeration reaction area, and through the multi-stage aerobic biodegradation of each aeration reaction area, most organic pollutants in a water body are removed and inorganic pollutants in waste water are further removed, so that the reaction efficiency of microorganisms is improved, when the water flow passes through each aeration reaction area, the water flow in the corresponding aeration reaction area is pumped into a waste water connecting port of each jet aerator in the aeration reaction area through a biological jet circulation pump, external air is pumped into an air connecting port of each jet aerator in the aeration reaction area through a self-aeration fan, the water flow and the air are uniformly mixed in a mixed reaction main body and are sprayed out through each jet pipe and corresponding jet nozzles, and under the combined action of the impact force of the air flow and the water flow when the jet nozzles are sprayed, the clamping ring positioned in the jet pipe compresses the buffer spring, so that the jet nozzle extends out of the jet pipe and is sprayed to the aeration reaction area through the filter screen to complete aeration operation, when the buffer spring recovers elasticity, the jet nozzle can be contracted into the jet pipe, and in the process, the annular scraping sheet can scrape off a blockage outside the filter screen to prevent blockage;
(3) the water flow treated by the plurality of aeration reaction areas flows into the aerobic sedimentation area to carry out mud-water separation, the supernatant of the aerobic sedimentation area automatically flows to the next-stage treatment structure, part of the precipitated sludge is pumped to the biological selection area through the sludge reflux pump, and the rest part of the sludge is discharged to the external sludge concentration tank.
The invention provides a multi-section jet aeration reactor and application thereof in viscose fiber wastewater treatment, and has the following beneficial effects:
(1) the wastewater treatment process flow is simple, the treatment structure is few, the capital cost is greatly saved, the dissolved oxygen transfer efficiency is up to more than 30%, the energy consumption is saved, no operation equipment and no subsequent maintenance cost are arranged in the aerobic aeration area except the jet aerator, no other operation equipment and no subsequent maintenance cost are arranged in the multistage aerobic aeration area except the jet aerator, and the jet aerator is adopted to solve the industrial problems that the biochemical aeration system in the viscose fiber industry is easy to scale and block the aerator and the like.
(2) The tank capacity of the biological selection area accounts for 4-8% of the total tank capacity of the biological selection area and the multi-stage aerobic aeration area, and by arranging the biological selection area, filamentous bacterium expansion can be effectively inhibited, the sedimentation performance of activated sludge is improved, and the problems that biochemical tanks in the viscose industry are easy to expand by sludge filamentous bacteria and have poor sedimentation performance are solved; insoluble organic matters can be hydrolyzed into soluble organic matters, and macromolecular organic matters are decomposed into micromolecular substances, so that the sewage is more suitable for the subsequent reaction of the aerobic aeration zone, and the load of the subsequent aerobic aeration zone is reduced.
(3) The invention utilizes the mixed liquid effluent of the multi-stage aerobic aeration zone as the circulating water of the jet aerator, the circulating water is sprayed and reflows to the front end of the system, the system has certain total nitrogen removal function, the aerobic aeration reaction zone is divided into a plurality of sections of reaction zones, and aerobic tanks in different zones can form different biological strains, thereby improving the reaction efficiency.
(4) When the jet aerator is used, the clamping ring in the jet pipe can compress the buffer spring to enable the jet nozzle to extend out of the jet pipe, when the jet aerator is not used, the buffer spring recovers elasticity to enable the jet nozzle to be contracted into the jet pipe, meanwhile, the annular scraping sheet can scrape impurities outside the jet nozzle, and meanwhile, the annular scraping sheet can seal the filter screen to prevent the jet aerator from being blocked and scaled.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a partial top view of the present invention;
FIG. 3 is a schematic view of the structure of the spray dosing member of the present invention;
FIG. 4 is a schematic view of the construction of the dross fishing element of the invention;
FIG. 5 is an enlarged view of the invention at B of FIG. 4;
FIG. 6 is a schematic view of the external structure of the jet aerator of the present invention;
FIG. 7 is a schematic view of the internal structure of the jet aerator of the present invention;
FIG. 8 is an enlarged view taken at A of FIG. 7 in accordance with the present invention;
fig. 9 is a schematic structural view of a dispersion board of the present invention.
Wherein, 1-biological selection area, 10-biological selection stirrer, 11-spraying dosing element, 110-position adjusting frame, 1101-fixed ferrule, 111-temporary storage barrel, 1110-snap ring, 1111-adding port, 1112-gear ring, 1113-liquid level scale, 112-dispersed spraying barrel, 1120-spraying port, 113-rotating motor, 1130-driving gear, 114-electromagnetic valve, 115-electronic flowmeter, 2-multi-stage aerobic aeration area, 20-aeration reaction area, 200-air regulating valve, 21-waste gas treatment element, 3-aerobic sedimentation area, 30-sludge reflux pump, 31-aerobic sedimentation mud scraper, 32-scum salvaging element, 320-mounting frame, 3200-threaded rod, 321-driving motor, etc, 322-installing a loop bar, 323-fishing barrel, 3230-electric telescopic rod, 3231-discharge port, 3232-connecting port, 3233-containing box, 3234-splicing plate, 3235-folding frame, 3236-hydraulic rod, 4-multi-section jet aeration element, 40-jet aerator, 400-mixing reaction main body, 4000-air connecting port, 4001-waste water connecting port, 4002-jet pipe, 4003-annular scraping blade, 4004-buffer spring, 4005-dispersion disc, 4006-dispersion bump, 4007-dispersion hole, 401-jet nozzle, 4010-clamping ring, 4011-filter screen, 41-self-aeration fan and 42-biological jet circulating pump.
Detailed Description
Example 1
The multi-section jet aeration reactor shown in fig. 1 and 2 comprises a biological selection zone 1, a multi-stage aerobic aeration zone 2, an aerobic sedimentation zone 3 and a multi-section jet aeration element 4 arranged in the multi-stage aerobic aeration zone 2 which are sequentially connected in series;
a biological selection stirrer 10 is arranged in the biological selection area 1; the multi-stage aerobic aeration zone 2 is formed by connecting five aeration reaction zones 20 in series end to end, and each aeration reaction zone 20 is connected with a common waste gas treatment element 21 through a connecting pipe; the bottom end of the aerobic sedimentation zone 3 is connected with the biological selection zone 1, a sludge reflux pump 30 is arranged at the connection part, and an aerobic sedimentation mud scraper 31 is arranged in the aerobic sedimentation zone 3;
as shown in FIGS. 6 and 7, the multi-stage jet aeration element 4 comprises four jet aerators 40 arranged in each aeration reaction zone 20, a self-aeration fan 41 connected with each jet aerator 40, and a self-aeration reaction zone connected with the aeration reaction zone20 one-to-one and with the 5 biological efflux circulating pumps 42 that each efflux aerator 40 in corresponding aeration reaction zone 20 is connected, efflux aerator 40 includes the mixed reaction main part 400 that the upper end is equipped with air connector 4000 and the lower extreme is equipped with waste water connector 4001 and lateral wall evenly is equipped with 5 efflux pipe 4002 of downward sloping along circumference, locate the terminal efflux nozzle 401 of each efflux pipe 4002, as shown in fig. 8, efflux nozzle 401 both ends are equipped with joint ring 4010 respectively and wherein the joint ring 4010 that one end corresponds is located efflux pipe 4002 and with efflux pipe 4002 inner wall sliding connection, efflux nozzle 401 lateral wall is around being equipped with filter screen 4011, efflux pipe 4002 port department and around being equipped with annular doctor-bar 4003 in efflux nozzle 401 outside department, efflux pipe 4002 is inside to be equipped with the buffer spring 4004 who is connected with joint ring 4010, the service area of efflux aerator 40 is 9m2The distance between the bottom of the jet nozzle 401 and the bottom of the tank is 750mm, and the service area of the jet aerator 40 is controlled to be about 9m, so that the oxygen utilization rate can be optimal, and the dissolved oxygen efficiency of the sewage is improved.
The working principle of the multi-section jet aeration reactor of the embodiment is as follows:
(1) viscose fiber wastewater firstly enters a biological selection area 1, sewage and added nutrient salt and medicines are uniformly stirred by a biological selection stirrer 10, insoluble organic matters are hydrolyzed into soluble organic matters, macromolecular organic matters are decomposed into micromolecular substances, and meanwhile, filamentous bacterium expansion can be effectively inhibited, and the sedimentation performance of activated sludge is improved;
(2) the water flow treated by the biological selection zone 1 naturally enters the multi-stage aerobic aeration zones 2, specifically sequentially passes through each aeration reaction zone 20, removes most organic pollutants in the water body and further removes inorganic pollutants in the wastewater through the multi-stage aerobic biodegradation of each aeration reaction zone 20, improves the reaction efficiency of microorganisms, when the water flow passes through each aeration reaction zone 20, the water flow in the corresponding aeration reaction zone 20 is pumped into the wastewater connecting ports 4001 of each jet aerator 40 in the aeration reaction zone 20 through the biological jet circulation pump 42, the external air is pumped into the air connecting ports 4000 of each jet aerator 40 in the aeration reaction zone 20 through the self-aeration fan 41, the water flow and the air are uniformly mixed in the mixed reaction main body 400 and are sprayed out through each jet pipe 4002 and the corresponding jet nozzle 401, in the process of the ejected jet nozzle 401, under the combined action of the impact force of air flow and water flow, the clamping ring 4010 positioned in the jet pipe 4002 compresses the buffer spring 4004, so that the jet nozzle 401 extends out of the jet pipe 4002 and is ejected to the aeration reaction area 20 through the filter screen 4011 to complete aeration operation, when the buffer spring 4004 recovers elasticity, the jet nozzle 401 retracts into the jet pipe 4002, and in the process, the annular scraping blade 4003 scrapes off the blockage outside the filter screen 4011 to prevent blockage;
(3) the water flow treated by the plurality of aeration reaction zones 20 flows into the aerobic sedimentation zone 3 for mud-water separation, the supernatant of the aerobic sedimentation zone 3 automatically flows to the next-stage treatment structure, the precipitated sludge is partially pumped to the biological selection zone 1 by the sludge reflux pump 30, the rest sludge is discharged to an external sludge concentration tank, and in the process, the sludge on the inner wall of the aerobic sedimentation zone 3 is scraped by the aerobic sedimentation sludge scraper 31.
Example 2
This embodiment is substantially the same as embodiment 1 except that:
as shown in fig. 3, a spraying and dosing element 11 is disposed on the biological selection area 1, the spraying and dosing element 11 includes a position adjusting bracket 110 having an external fixing element at one end and a fixing collar 1101 at the other end, a temporary storage cylinder 111 having a snap ring 1110 capable of being snapped on the upper end of the fixing collar 1101 at the side wall and an adding port 1111 at the upper end, 5 dispersing and spraying cylinders 112 uniformly distributed on the periphery of the temporary storage cylinder 111 along the circumferential direction and connected to the temporary storage cylinder 111 in a penetrating manner, a rotating motor 113, a gear ring 1112 on the side wall of the temporary storage cylinder 111, a driving gear 1130 engaged with the gear ring 1112 connected to the output shaft of the rotating motor 113, 10 spraying ports 1120 uniformly disposed on the side wall of each dispersing and spraying cylinder 112 along the circumferential direction, when nutritive salt or other medicines are required to be added into the biological selection area 1, the medicines in the temporary storage cylinder 111 can be added into each dispersing and spraying cylinder 112 through the adding port 1111, and evenly spray everywhere in the sewage in the biological selection district 1 through corresponding spraying port 1120, at this moment, start to rotate motor 113 and drive driving gear 1130, drive a section of thick bamboo 111 of keeping in simultaneously and take place to rotate, stir sewage and liquid medicine, mix with higher speed both, cooperate the rotation of biological selection mixer 10 simultaneously, avoid appearing the medicine and spray the dead angle, improve sewage treatment effect.
Example 3
This embodiment is substantially the same as embodiment 2 except that:
as shown in fig. 3, the junction of the temporary storage cylinder 111 and each dispersed spraying cylinder 112 is provided with an electromagnetic valve 114 and an electronic flowmeter 115, the side wall of the temporary storage cylinder 111 is provided with a liquid level scale 1113, the liquid level of the medicine in the temporary storage cylinder 111 is visually displayed through the liquid level scale 1113, timely supplement is facilitated, sufficient medicine amount is added into the biological selection area 1, the medicine amount is accurately controlled to be added into the biological selection area 1 through the electromagnetic valve 114 and the electronic flowmeter 115, and secondary pollution caused by excessive addition of water is avoided.
Example 4
This example is substantially the same as example 3, except that:
as shown in fig. 4, 3 scum fishing elements 32 are further arranged in the aerobic sedimentation zone 3, each scum fishing element 32 comprises a mounting frame 320 arranged at the upper end of the aerobic sedimentation zone 3 and provided with a threaded rod 3200 at the bottom end thereof in the horizontal direction, a driving motor 321 for driving the threaded rod 3200 to rotate, a mounting loop bar 322 sleeved outside the threaded rod 3200 and in threaded connection with the threaded rod 3200, a fishing barrel 323 connected with the bottom end of the mounting loop bar 322 and provided with an electric telescopic rod 3230 at the connection part thereof, as shown in fig. 5, a connecting port 3232 is arranged at the bottom end of the fishing barrel 323, a containing box 3233 is connected at the connecting port 3232, two splicing plates 3234 are symmetrically hinged at the left side and the right side of the connecting port 3232, a folding frame 3235 connected with the inner wall of the containing box 3233 is arranged at the bottom end of each splicing plate 3234, a hydraulic rod 3236 is arranged between two adjacent folding frames 3235, the threaded rod 3200 is driven by the driving motor 321 to rotate, so that the mounting loop bar 322 moves left and right on the threaded rod 3200 to complete the adjustment of the fishing position, when needs are salvaged, through adjusting the extension of electric telescopic handle 3230 and flexible and utilize salvage section of thick bamboo 323 to accomplish the salvage of dross, after accomplishing a salvage, through starting two hydraulic stem 3236 compressions, make two splice plate 3234 downward slopping of symmetric distribution open, make the dross of salvaging fall to holding in the case 3233, then, start two hydraulic stem 3236 extensions, make two splice plate 3234 downward slopping open the level concatenation will hold the case 3233 shutoff after, salvage next time, accomplish the salvage of dross of different positions department through a plurality of dross salvaging elements 32, make the dross of salvaging temporarily save wherein through setting up holding case 3233, conveniently in time clear up salvage section of thick bamboo 323, reduce the number of times of people for clearing up salvage section of thick bamboo 323, improve salvage dross efficiency.
Example 5
This example is substantially the same as example 4, except that:
as shown in fig. 9, the air connection port 4000 and the wastewater connection port 4001 are both provided with a dispersion plate 4005, the side wall of the dispersion plate 4005 is uniformly provided with 8 dispersion protrusions 4006, the side wall of each dispersion protrusion 4006 is provided with 4 dispersion holes 4007, wastewater and air entering the mixing reaction body 400 are scattered into small molecules through the corresponding 4 dispersion holes 4007 on the dispersion protrusions 4006, then the two are mixed in the mixing reaction body 400, and oxygen in the mixed small molecule air is fully dissolved in water flow, so that the wastewater dissolved oxygen efficiency and the biochemical treatment effect are improved.
Claims (4)
1. The multi-section jet aeration reactor is characterized by comprising a biological selection area (1), a multi-stage aerobic aeration area (2), an aerobic sedimentation area (3) and a multi-section jet aeration element (4) which are sequentially connected in series, wherein the multi-stage aerobic aeration area (2) is arranged in the multi-stage aerobic aeration area;
a biological selection stirrer (10) is arranged in the biological selection area (1); the multi-stage aerobic aeration zone (2) is formed by connecting a plurality of aeration reaction zones (20) end to end in series, and each aeration reaction zone (20) is connected with a common waste gas treatment element (21) through a connecting pipe; the bottom end of the aerobic sedimentation zone (3) is connected with the biological selection zone (1), a sludge reflux pump (30) is arranged at the connection part, and an aerobic sedimentation sludge scraper (31) is arranged in the aerobic sedimentation zone (3);
the multi-section jet aeration element (4) comprises a plurality of jet aerators (40) arranged in each aeration reaction zone (20), a self-aeration fan (41) connected with each jet aerator (40), a plurality of biological jet circulation pumps (42) which correspond to the aeration reaction zones (20) one by one and are connected with each jet aerator (40) in the corresponding aeration reaction zone (20), wherein each jet aerator (40) comprises a mixing reaction main body (400) of which the upper end is provided with an air connector (4000) and the lower end is provided with a wastewater connector (4001) and the side wall is uniformly provided with a plurality of downward-inclined jet pipes (4002) along the circumferential direction, and jet nozzles (401) arranged at the tail ends of the jet pipes (4002), clamping rings (4010) are respectively arranged at the two ends of each jet nozzle (401), and the clamping rings (4010) corresponding to one end are positioned in the jet pipes (4002) and are in sliding connection with the inner walls of the jet pipes (4002), a filter screen (4011) is wound on the side wall of the jet nozzle (401), an annular scraping blade (4003) is arranged at the port of the jet pipe (4002) and around the outer part of the jet nozzle (401), and a buffer spring (4004) connected with a clamping ring (4010) is arranged inside the jet pipe (4002);
the biological selection area (1) is provided with a spraying and dosing element (11), the spraying and dosing element (11) comprises a position adjusting frame (110) with one end being externally fixed and the other end being provided with a fixed ferrule (1101), a temporary storage cylinder (111) with a side wall being provided with a snap ring (1110) capable of being clamped at the upper end of the fixed ferrule (1101) and an addition port (1111) at the upper end, a plurality of dispersing and spraying cylinders (112) which are uniformly distributed at the periphery of the temporary storage cylinder (111) along the circumferential direction and are communicated with the temporary storage cylinder (111), and a rotating motor (113), the side wall of the temporary storage cylinder (111) is provided with a gear ring (1112), an output shaft of the rotating motor (113) is connected with a driving gear (1130) meshed with the gear ring (1112), and the side wall of each dispersing and spraying cylinder (112) is uniformly provided with a plurality of spraying ports (1120) along the circumferential direction;
the connection part of the temporary storage cylinder (111) and each dispersed spraying cylinder (112) is provided with an electromagnetic valve (114) and an electronic flowmeter (115), and the side wall of the temporary storage cylinder (111) is provided with a liquid level scale (1113);
still be equipped with a plurality of dross fishing elements (32) in aerobic sedimentation district (3), dross fishing elements (32) are including locating installation frame (320), the drive that aerobic sedimentation district (3) upper end and bottom were equipped with threaded rod (3200) along the horizontal direction threaded rod (3200), threaded rod (3200) pivoted driving motor (321), cover the threaded rod (3200) outside and with threaded rod (3200) threaded connection's installation loop bar (322), with installation loop bar (322) bottom is connected and the junction is equipped with a fishing barrel (323) of electric telescopic handle (3230), fishing barrel (323) bottom is equipped with connector (3232), connector (3232) department is connected with and holds case (3233), and connector (3232) left and right sides symmetry articulates there are two splice plates (3234), and every splice plate (3234) bottom is equipped with hold the folding leg (3235) of case (3233) inner wall connection, a hydraulic rod (3236) is arranged between every two adjacent folding frames (3235).
2. A multi-sectional jet aeration reactor according to claim 1, wherein an air regulating valve (200) is provided at each of said aeration reaction zones (20).
3. A multi-stage jet aeration reactor according to claim 1, characterized in that the jet aerator (40) has a service area of 9m2The distance between the bottom of the jet nozzle (401) and the bottom of the pool is 500-750 mm.
4. A multi-section jet aeration reactor according to claim 1, characterized in that the snap-in ring (4010) is also threadably connectable to the inner wall of the jet pipe (4002).
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