CN106380031B - Aeration oxygenation type lake water body purification method - Google Patents
Aeration oxygenation type lake water body purification method Download PDFInfo
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- CN106380031B CN106380031B CN201610845866.1A CN201610845866A CN106380031B CN 106380031 B CN106380031 B CN 106380031B CN 201610845866 A CN201610845866 A CN 201610845866A CN 106380031 B CN106380031 B CN 106380031B
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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
- C02F7/00—Aeration of stretches of water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- C02F2303/02—Odour removal or prevention of malodour
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses an aeration and oxygenation type purification method of lake water, which comprises the following steps of 1) filtering sewage; 2) aeration treatment of sewage: 3) flocculation and separation of sludge: 4) and (5) disinfecting the sludge. The invention has simple structure and strong practicability, comprehensively treats the lake sewage through the filter tank, the aeration tank, the sedimentation tank and the disinfection tank, effectively improves the treatment quality of the sewage, and increases the dissolved oxygen content in the sewage through the aeration tank, thereby improving the self-purification capacity of the lake sewage.
Description
Technical Field
The invention relates to a method for purifying an aeration and oxygenation type lake water body.
Background
In the formation and development of cities, lakes are used as important resources and environmental carriers, which are related to urban survival, restrict urban development and are important factors influencing urban style and beautifying urban environment. The urban lake has various ecological functions of supplying water sources, providing greenbelts, protecting the environment, carrying traffic, education and the like. Showing irreplaceable significance in the aspects of city construction and city space development expansion. With the acceleration of urbanization pace in China, the land on two sides of the lake is developed and utilized, the function of the urban lake is damaged, a large amount of industrial and domestic sewage is directly discharged into rivers without being treated, so that the water pollution of the lake is caused, the water quality is deteriorated, and the ecological environment of the lake is damaged.
An important index for measuring the water quality condition of the lake is the dissolved oxygen content, and the growth of aquatic organisms and the self-cleaning capacity of a river channel are directly influenced by the dissolved oxygen content. The higher the dissolved oxygen content is, the normal aquatic growth of the lake is ensured, the aerobic bacterial group is active, and the lake water quality is better. In the prior art, the treatment of the lake sewage generally adopts simple filtration and disinfection treatment, and although the water quality of the lake can be relieved to a certain extent in a short period, the long-term treatment of the water quality of the lake is not facilitated. And the sewage is treated by simply adopting filtration and disinfection, and the treatment quality of the final sewage is general.
Disclosure of Invention
The invention aims to provide a technical scheme of an aeration and oxygenation type lake water body purification method aiming at the defects in the prior art, lake sewage is comprehensively treated by a filter tank, an aeration tank, a sedimentation tank and a disinfection tank, the treatment quality of the sewage is effectively improved, and meanwhile, the dissolved oxygen content in the sewage is increased by the aeration tank, so that the self-purification capacity of the lake water is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
an aeration and oxygenation type lake water body purification method is characterized in that: the method comprises the following steps: a
1) And (3) filtering the sewage:
a. the water pump sucks sewage in the lake, and the sewage is conveyed into the water inlet of the filter tank through the sewage conveying pipe, and the amount and the sewage treatment speed of the sewage entering the filter tank are controlled through a flow control valve on the water inlet of the filter tank;
b. the sewage entering the filtering tank firstly enters a primary filtering chamber for filtering, and suspended matters and impurity particles in the sewage are filtered and removed through the filtering action of a filtering screen;
c. the sewage treated by the primary filtering chamber enters an oil stain filtering chamber, oil stains in the sewage are filtered under the double filtering action of the filler and the filtering film on the oil stain filtering plate, and meanwhile, the oil stain collecting box above the oil stain filtering chamber sucks the filtered oil stains on the oil stain filtering plate through the adsorption pipe, so that the oil stains are prevented from being adhered to the oil stain filtering plate, the oil stain filtering efficiency of the subsequent sewage is influenced, and the eutrophication pollution of the water body caused by the oil stains is effectively prevented;
d. the sewage treated by the oil stain filtering chamber enters an aeration tank through a sewage conveying pipe;
2) aeration treatment of sewage:
a. sewage is conveyed to a water inlet of an aeration tank through a sewage conveying pipeline, and the amount of the sewage entering the aeration tank is controlled through a flow control valve on the water inlet of the aeration tank, so that the sewage treatment efficiency is guaranteed, and the sewage treatment quality is improved;
b. the sewage entering the aeration tank firstly enters the water drop chamber for water drop oxygenation treatment, the sewage enters the water distributor in the water drop chamber through the water inlet of the aeration tank and is sprayed onto the water drop tray through spray holes in the water distributor, and the contact area of the sewage and air is increased through the water drop tray, so that the dissolved oxygen content in the water is higher, and the odor of the water is effectively inhibited;
c. the sewage treated by the drop chamber enters the aeration chamber to be aerated, so that the oxygen content in the water is further improved, the transparency and the water quality of the water are improved, the treated water quality is better in effect, aeration branch pipes are uniformly laid at the bottom of the aeration chamber, aerators are uniformly arranged on the aeration branch pipes, air is conveyed to the aerators in a bubble form by the aeration branch pipes through aeration equipment, and then the air enters the sewage through the aerators, meanwhile, a baffle plate in the aeration chamber performs a certain buffering and blocking effect on the sewage, the contact time of the sewage and the air is prolonged, the oxygen content in the sewage is effectively increased, the sewage in the aeration chamber is in a violent stirring state, and the sewage treatment efficiency is improved;
d. the back flushing device in the aeration chamber regularly performs scouring and cleaning operation on the aeration branch pipes and the aerators, prevents the aeration branch pipes and the aerators from being blocked by sludge impurities in sewage to influence the aeration effect and the aeration time of the sewage, and when the back flushing device works, the back flushing valve is opened to enable the back flushing pump to convey clean water into the aeration branch pipes and the aerators through the back flushing pipes so as to scour the insides of the back flushing pump;
e. the sewage treated by the aeration chamber enters a sedimentation tank through a sewage conveying pipeline;
3) flocculation and separation of sludge:
a. conveying the sewage in the aeration chamber into a sedimentation tank through a sewage conveying pipe, firstly entering a flocculation chamber for flocculation treatment, opening a flocculation chemical box switch valve on the outer side wall of the flocculation chamber when the sewage enters the flocculation chamber, connecting a flocculation chemical box with a spray lance through a chemical conveying pipe, and spraying the flocculation chemical into the sewage through the spray lance;
b. when the flocculation reagent box is used for throwing the flocculation reagent, the stirrer at the bottom of the flocculation chamber is opened, sewage in the flocculation chamber is stirred through the dual stirring frame, the stirring motor drives the stirring shaft to rotate through the motor shaft, the stirring shaft drives the dual stirring frame to rotate, and the sewage and the flocculation reagent are uniformly mixed through the stirring action of the first stirring frame, the second stirring frame and the stirring rod on the dual stirring frame, so that the sedimentation efficiency of sludge is improved, and the sludge can be conveniently separated at the later stage;
b. the sewage treated by the flocculation chamber enters a settling chamber for settling treatment, the sludge in the sewage is separated from the sewage after the settling treatment of the settling chamber, the sludge is discharged from a sludge outlet at the bottom of a settling tank, and the sewage is discharged from a water outlet at the upper part of the settling tank and enters a disinfection tank for disinfection treatment;
4) and (3) disinfection treatment of sewage:
sewage in the sedimentation chamber is discharged from the outlet and is carried out final disinfection processing in the disinfection pond, and the disinfection pole sprays disinfectant in the disinfection pond, kills harmful pathogenic microorganism in the sewage through disinfectant to make the quality of water of handling better.
Further, in step b of step 2), when sewage enters the drop chamber, the rotating device is turned on, the rotating motor drives the fixed shaft to rotate through the motor shaft, so as to drive the drop plate on the fixed shaft to rotate, so that the drop plate not only has the functions of dropping and oxygenating the sewage, but also has the function of stirring the sewage, and the sewage treatment effect is further improved.
Further, in the step 4), the disinfectant is one or a mixture of more than one of peracetic acid, hydrogen peroxide or peroxyglutaric acid.
Further, in step 4), when sewage entered into the disinfection pond, the stirring rod in the disinfection pond stirred the sewage in the disinfection pond to make the contact of sewage and disinfectant more abundant, thereby improve the disinfection effect of sewage, stirring cylinder passes through the rotation that the piston rod drove the (mixing) shaft, and the (mixing) shaft drives the rotation of stirring rod again, thereby stirs mixing action to the sewage in the disinfection pond.
Further, a water drop chamber and an aeration chamber are arranged in the aeration tank, the bottom of the water drop chamber is communicated with the bottom of the aeration chamber, a water drop device is arranged in the water drop chamber and comprises a water drop plate, a fixed shaft and a rotating device, the water drop plate is fixed on the fixed shaft, a water distributor is arranged above the water drop plate, spray holes are uniformly formed in the water distributor, the left end of the water distributor is communicated with a water inlet of the aeration tank, a water outlet is formed in the top end of the aeration chamber, the aeration chamber is internally provided with an aeration device which comprises an aeration main pipe, fixed pipes, aeration branch pipes and an aerator, the aeration chamber extends out of the upper end of the aeration main pipe and is connected with aeration equipment, the lower end of the aeration main pipe is connected with the fixed pipes, the aeration branch pipes are positioned between the two fixed pipes, the aeration branch pipes are uniformly arranged at the bottom of the aeration chamber, the aerator is uniformly arranged on, the baffling board is located the right side of delivery port, drop the design of room through inside drop dish, effectively increase the area of contact of sewage and air, thereby improve the oxygen content of sewage, the design of combining the water-locator again can make the sewage more comprehensive with the contact of drop dish, rotary device's design can drive the rotation of drop dish, not only improve the area of contact of sewage and drop dish, and can stir sewage again, thereby make the treatment effect of sewage better, aeration equipment passes through aeration branch pipe and aerator, make the air get into sewage with the form of tiny bubble, not only increase the oxygen content in the sewage, can also make the sewage in the aeration tank be in violent stirring state, improve sewage treatment efficiency, make the organic pollutant in the sewage obtain the degradation.
Furthermore, the water dropping plate comprises a first water dropping plate, a second water dropping plate and a third water dropping plate, the radiuses of the first water dropping plate, the radiuses of the second water dropping plate and the radiuses of the third water dropping plate are sequentially increased from top to bottom, water dropping stones are arranged inside the first water dropping plate, the second water dropping plate and the third water dropping plate, water leakage holes are uniformly formed in the surfaces of the first water dropping plate, the second water dropping plate and the third water dropping plate, through the size design of the first water dropping plate, the second water dropping plate and the third water dropping plate, the whole water dropping plate is in a step shape, the oxygen increasing effect of the water dropping plate is further improved, the structural design is more reasonable, the contact area between water and air is further increased through the design of the water dropping stones, the content of dissolved oxygen in the water is higher, the water dropping effect of the water dropping plate is more obvious, and the water leakage holes can be prevented from being deposited in the water dropping plate.
Further, rotary device includes rotating electrical machines and adapter sleeve, and the rotating electrical machines is connected with adapter sleeve's upper end through the rotation axis, and adapter sleeve's lower extreme is connected with the fixed axle, drives the rotation of fixed axle through the rotating electrical machines to make the drop effect of sewage better, can carry out the stirring effect to sewage moreover, make the oxygenation effect of sewage better.
Furthermore, the baffling board includes first baffling board and second baffling board, and first baffling board and baffling board all are "Z" form, and first baffling board is located the left side of second baffling board, and the design of first baffling board and second baffling board shape can be so that the baffling effect of baffling board better to the contact time of extension sewage and air ensures the aeration oxygenation effect of sewage.
Further, still be provided with the recoil device in the aeration chamber, the recoil device includes recoil pipe and recoil valve, the recoil valve is located the recoil pipe, the recoil pipe communicates with each other through fixed pipe and aeration branch pipe, the recoil pipe extends the aeration chamber and is connected with the recoil pump, the design of recoil device can regularly carry out cleaning operation to aeration branch pipe and aerator, avoid the silt impurity in the sewage to cause the jam of aeration branch pipe and aerator, influence the aeration effect of sewage, the design of recoil valve can make the recoil device use more automatic.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the sewage firstly enters the filter tank, suspended matters and large-particle impurities in the sewage are filtered through the primary filtering chamber, then the oil stain of the sewage is removed through the oil stain filtering chamber, eutrophication pollution of the water body caused by the oil stain is effectively prevented, the treatment effect of the sewage is improved, the sewage treated by the filter tank enters the aeration tank again to be subjected to oxygenation treatment, the dissolved oxygen content in the sewage is effectively improved through dual oxygenation treatment of the water drop chamber and the aeration chamber, the stinking of water is effectively inhibited, the transparency and the water quality of the water are improved, the treated water quality is better, the sewage subjected to oxygenation treatment enters the sedimentation tank again to be subjected to flocculation sedimentation treatment, sludge in the sewage is removed, and finally the sewage is subjected to disinfection treatment by the disinfection tank to remove peculiar smell in the water, so that the quality after the sewage treatment is better.
The invention has simple structure and strong practicability, comprehensively treats the lake sewage through the filter tank, the aeration tank, the sedimentation tank and the disinfection tank, effectively improves the treatment quality of the sewage, and increases the dissolved oxygen content in the sewage through the aeration tank, thereby improving the self-purification capacity of the lake sewage.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of the method for purifying a lake water body by aeration and oxygenation;
FIG. 2 is a schematic view of the structure of an aeration tank according to the present invention;
fig. 3 is a schematic structural diagram of the first drop tray of the present invention.
In the figure: 1-a water drop chamber; 2-an aeration chamber; 3-a first drop tray; 4-a second drop tray; 5-a third drop tray; 6, fixing a shaft; 7-aeration pipe distribution; 8-an aerator; 9-a water inlet of an aeration tank; 10-a water outlet; 11-aeration main pipe; 12-a stationary tube; 13-spraying holes; 14-water leakage holes; 15-a rotating electrical machine; 16-a connection sleeve; 17-a rotating shaft; 18-a first baffle plate; 19-a second baffle plate; 20-backflushing the pipe; 21-a recoil valve; 22-water distributor.
Detailed Description
As shown in figures 1 to 3, the method for purifying an aeration and oxygenation type lake water body of the invention comprises the following steps:
1) and (3) filtering the sewage:
a. the water pump sucks sewage in the lake, and the sewage is conveyed into the water inlet of the filter tank through the sewage conveying pipe, and the amount and the sewage treatment speed of the sewage entering the filter tank are controlled through a flow control valve on the water inlet of the filter tank;
b. the sewage entering the filtering tank firstly enters a primary filtering chamber for filtering, and suspended matters and impurity particles in the sewage are filtered and removed through the filtering action of a filtering screen;
c. the sewage treated by the primary filtering chamber enters an oil stain filtering chamber, oil stains in the sewage are filtered under the double filtering action of the filler and the filtering film on the oil stain filtering plate, and meanwhile, the oil stain collecting box above the oil stain filtering chamber sucks the filtered oil stains on the oil stain filtering plate through the adsorption pipe, so that the oil stains are prevented from being adhered to the oil stain filtering plate, the oil stain filtering efficiency of the subsequent sewage is influenced, and the eutrophication pollution of the water body caused by the oil stains is effectively prevented;
d. the sewage treated by the oil stain filtering chamber enters an aeration tank through a sewage conveying pipe;
2) aeration treatment of sewage:
a. sewage is conveyed to a water inlet of an aeration tank through a sewage conveying pipeline, and the amount of the sewage entering the aeration tank is controlled through a flow control valve on the water inlet of the aeration tank, so that the sewage treatment efficiency is guaranteed, and the sewage treatment quality is improved;
b. when the sewage enters the water drop chamber, the rotating device is started, the rotating motor drives the fixed shaft to rotate through the rotating shaft, so that the water drop plate on the fixed shaft is driven to rotate, the water drop plate not only plays a role in water drop oxygenation, but also plays a role in stirring the sewage, and the sewage treatment effect is further improved;
c. the sewage treated by the drop chamber enters the aeration chamber to be aerated, so that the oxygen content in the water is further improved, the transparency and the water quality of the water are improved, the treated water quality is better in effect, aeration branch pipes are uniformly laid at the bottom of the aeration chamber, aerators are uniformly arranged on the aeration branch pipes, air is conveyed to the aerators in a bubble form by the aeration branch pipes through aeration equipment, and then the air enters the sewage through the aerators, meanwhile, a baffle plate in the aeration chamber performs a certain buffering and blocking effect on the sewage, the contact time of the sewage and the air is prolonged, the oxygen content in the sewage is effectively increased, the sewage in the aeration chamber is in a violent stirring state, and the sewage treatment efficiency is improved;
d. the back flushing device in the aeration chamber regularly performs scouring and cleaning operation on the aeration branch pipes and the aerators, prevents the aeration branch pipes and the aerators from being blocked by sludge impurities in sewage to influence the aeration effect and the aeration time of the sewage, and when the back flushing device works, the back flushing valve is opened to enable the back flushing pump to convey clean water into the aeration branch pipes and the aerators through the back flushing pipes so as to scour the insides of the back flushing pump;
e. the sewage treated by the aeration chamber enters a sedimentation tank through a sewage conveying pipeline;
3) flocculation and separation of sludge:
a. conveying the sewage in the aeration chamber into a sedimentation tank through a sewage conveying pipe, firstly entering a flocculation chamber for flocculation treatment, opening a flocculation chemical box switch valve on the outer side wall of the flocculation chamber when the sewage enters the flocculation chamber, connecting a flocculation chemical box with a spray lance through a chemical conveying pipe, and spraying the flocculation chemical into the sewage through the spray lance;
b. when the flocculation reagent box is used for throwing the flocculation reagent, the stirrer at the bottom of the flocculation chamber is opened, sewage in the flocculation chamber is stirred through the dual stirring frame, the stirring motor drives the stirring shaft to rotate through the rotating shaft, the stirring shaft drives the dual stirring frame to rotate, and the sewage and the flocculation reagent are uniformly mixed through the stirring action of the first stirring frame, the second stirring frame and the stirring rod on the dual stirring frame, so that the sedimentation efficiency of sludge is improved, and the sludge can be conveniently separated at the later stage;
b. the sewage treated by the flocculation chamber enters a settling chamber for settling treatment, the sludge in the sewage is separated from the sewage after the settling treatment of the settling chamber, the sludge is discharged from a sludge outlet at the bottom of a settling tank, and the sewage is discharged from a water outlet at the upper part of the settling tank and enters a disinfection tank for disinfection treatment;
4) and (3) disinfection treatment of sewage:
sewage in the drip chamber is discharged from the outlet and is carried out final disinfection processing in the disinfection pond, the disinfection pole sprays disinfectant in the disinfection pond, harmful pathogenic microorganism in with the sewage kills through disinfectant, thereby make the quality of water of processing better, disinfectant is peracetic acid, one or more than one mixture in hydrogen peroxide or the peroxy glutaric acid, when sewage enters into the disinfection pond, the stirring rod in the disinfection pond stirs the sewage in the disinfection pond, thereby make the contact of sewage and disinfectant more abundant, thereby improve the disinfection effect of sewage, stirring cylinder passes through the rotation that the piston rod drove the (mixing) shaft, the (mixing) shaft drives the rotation of stirring rod again, thereby stir the mixing effect to the sewage in the disinfection pond.
The invention has simple structure and strong practicability, comprehensively treats the lake sewage through the filter tank, the aeration tank, the sedimentation tank and the disinfection tank, effectively improves the treatment quality of the sewage, and increases the dissolved oxygen content in the sewage through the aeration tank, thereby improving the self-purification capacity of the lake sewage.
The sewage firstly enters the filter tank, suspended matters and large-particle impurities in the sewage are filtered through the primary filtering chamber, then the oil stain of the sewage is removed through the oil stain filtering chamber, eutrophication pollution of the water body caused by the oil stain is effectively prevented, the treatment effect of the sewage is improved, the sewage treated by the filter tank enters the aeration tank again to be subjected to oxygenation treatment, the dissolved oxygen content in the sewage is effectively improved through dual oxygenation treatment of the water drop chamber and the aeration chamber, the stinking of water is effectively inhibited, the transparency and the water quality of the water are improved, the treated water quality is better, the sewage subjected to oxygenation treatment enters the sedimentation tank again to be subjected to flocculation sedimentation treatment, sludge in the sewage is removed, and finally the sewage is subjected to disinfection treatment by the disinfection tank to remove peculiar smell in the water, so that the quality after the sewage treatment is better.
A drop water chamber 1 and an aeration chamber 2 are arranged in the aeration tank, the bottom of the drop water chamber 1 is communicated with the bottom of the aeration chamber 2, a drop device is arranged in the drop water chamber 1 and comprises drop plates, a fixed shaft 6 and a rotating device, the drop plates comprise a first drop plate 3, a second drop plate 4 and a third drop plate 5, the radiuses of the first drop plate 3, the second drop plate 4 and the third drop plate 5 are sequentially increased from top to bottom, drop stones are arranged in the first drop plate 3, the second drop plate 4 and the third drop plate 5, water leakage holes 14 are uniformly formed in the surfaces of the first drop plate 3, the second drop plate 4 and the third drop plate 5, the whole drop plate is in a step shape, the oxygen increasing effect of sewage is further improved, the drop plate with a structure is designed, the drop stone contact area is further reasonably designed, and the air contact area with the drop stones is further increased, the content of dissolved oxygen in water is higher, the water dropping effect of the water dropping chamber 1 is more obvious, the design of the water leakage holes 14 can prevent sewage from being deposited in the water dropping plate, the water dropping plate is fixed on the fixed shaft 6, the rotating device comprises a rotating motor 15 and a connecting sleeve 16, the rotating motor 15 is connected with the upper end of the connecting sleeve 16 through a rotating shaft 17, the lower end of the connecting sleeve 16 is connected with the fixed shaft 6, the rotating motor 15 drives the fixed shaft 6 to rotate, the water dropping effect of the sewage is better, the sewage can be stirred, the oxygen increasing effect of the sewage is better, a water distributor 22 is arranged above the water dropping plate, spray holes 13 are uniformly formed in the water distributor 22, and the left end of the water distributor 22 is communicated with the water inlet 9 of the aeration tank.
The top of aeration chamber 2 is provided with delivery port 10, be provided with aeration equipment in aeration chamber 2, aeration equipment includes aeration main 11, fixed pipe 12, aeration branch pipe 7 and aerator 8, aeration chamber 2 is extended to aeration main 11's upper end and is connected with aeration equipment, aeration main 11's lower extreme is connected with fixed pipe 12, aeration branch pipe 7 is located between two fixed pipes 12, aeration branch pipe 7 evenly sets up in the bottom of aeration chamber 2, aerator 8 evenly sets up on aeration branch pipe 7, the top of aerator 8 is provided with the baffling board, the baffling board is located the right side of delivery port 10, the baffling board includes first baffling board 18 and second baffling board 19, first baffling board 18 and baffling board all are "Z" form, first baffling board 18 is located the left side of second baffling board 19, the design of first baffling board 18 and the 19 shapes of second baffling board can make the baffling effect of baffling board better, thereby prolonging the contact time of sewage and air and ensuring the aeration and oxygenation effects of the sewage, the drop water chamber 1 can effectively increase the contact area of the sewage and the air through the design of the internal drop water plate, thereby improving the oxygen content of the sewage, the design of the water distributor 22 can ensure that the sewage and the drop water plate are contacted more comprehensively, the design of the rotating device can drive the drop water plate to rotate, not only the contact area of the sewage and the drop water plate is improved, but also the sewage can be stirred, thereby ensuring better treatment effect of the sewage, the aeration device can ensure that the air enters the sewage in a fine bubble form through the aeration branch pipe 7 and the aerator 8, not only the oxygen content in the sewage is increased, but also the sewage in the aeration tank can be in a stirring state, the sewage treatment efficiency is improved, organic pollutants in the sewage are degraded, the back flushing device is also arranged in the aeration chamber 2, the backflushing device comprises a backflushing pipe 20 and a backflushing valve 21, the backflushing valve 21 is located on the backflushing pipe 20, the backflushing pipe 20 is communicated with the aeration branch pipe 7 through the fixed pipe 12, the backflushing pipe 20 extends out of the aeration chamber 2 to be connected with the backflushing pump, the design of the backflushing device can regularly clean the aeration branch pipe 7 and the aerator 8, the phenomenon that the aeration branch pipe 7 and the aerator 8 are blocked due to sludge impurities in sewage to affect the aeration effect of the sewage is avoided, and the backflushing valve 21 can enable the backflushing device to be used more automatically.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple variations, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are within the scope of the present invention.
Claims (5)
1. An aeration and oxygenation type lake water body purification method is characterized in that: the method comprises the following steps:
1) and (3) filtering the sewage:
a. the water pump sucks sewage in the lake, and the sewage is conveyed into the water inlet of the filter tank through the sewage conveying pipe, and the amount and the sewage treatment speed of the sewage entering the filter tank are controlled through a flow control valve on the water inlet of the filter tank;
b. the sewage entering the filtering tank firstly enters a primary filtering chamber for filtering, and suspended matters and impurity particles in the sewage are filtered and removed through the filtering action of a filtering screen;
c. the sewage treated by the primary filtering chamber enters an oil stain filtering chamber, oil stains in the sewage are filtered under the double filtering action of the filler and the filtering film on the oil stain filtering plate, and meanwhile, the oil stain collecting box above the oil stain filtering chamber sucks the filtered oil stains on the oil stain filtering plate through the adsorption pipe, so that the oil stains are prevented from being adhered to the oil stain filtering plate, the oil stain filtering efficiency of the subsequent sewage is influenced, and the eutrophication pollution of the water body caused by the oil stains is effectively prevented;
d. the sewage treated by the oil stain filtering chamber enters an aeration tank through a sewage conveying pipe;
2) aeration treatment of sewage:
a. sewage is conveyed to a water inlet of an aeration tank through a sewage conveying pipeline, the amount of the sewage entering the aeration tank is controlled through a flow control valve on the water inlet of the aeration tank, so that the sewage treatment efficiency is guaranteed, and meanwhile, the sewage treatment quality is improved Water leakage holes are uniformly arranged on the surfaces of the second water dropping plate and the third water dropping plate, a water distributor is arranged above the water dropping plate, the water distributor is uniformly provided with spray holes, the left end of the water distributor is communicated with the water inlet of the aeration tank, the top end of the aeration chamber is provided with a water outlet, the aeration chamber is internally provided with an aeration device, the aeration device comprises an aeration main pipe, a fixed pipe, an aeration branch pipe and an aerator, the upper end of the aeration main pipe extends out of the aeration chamber to be connected with aeration equipment, the lower end of the aeration main pipe is connected with the fixed pipe, the aeration branch pipes are positioned between the two fixed pipes and are uniformly arranged at the bottom of the aeration chamber, the aerators are uniformly arranged on the aeration branch pipes, and a baffle plate is arranged above the aerators and is positioned on the right side of the water outlet;
b. when the sewage enters the water drop chamber, the rotating device is started, the rotating motor drives the fixed shaft to rotate through the rotating shaft, so that the water drop plate on the fixed shaft is driven to rotate, the water drop plate not only plays a role in water drop oxygenation, but also plays a role in stirring the sewage, and the sewage treatment effect is further improved;
c. the sewage treated by the drop chamber enters the aeration chamber to be aerated, so that the oxygen content in the water is further improved, the transparency and the water quality of the water are improved, the treated water quality is better in effect, aeration branch pipes are uniformly laid at the bottom of the aeration chamber, aerators are uniformly arranged on the aeration branch pipes, air is conveyed to the aerators in a bubble form by the aeration branch pipes through aeration equipment, and then the air enters the sewage through the aerators, meanwhile, a baffle plate in the aeration chamber performs a certain buffering and blocking effect on the sewage, the contact time of the sewage and the air is prolonged, the oxygen content in the sewage is effectively increased, the sewage in the aeration chamber is in a violent stirring state, and the sewage treatment efficiency is improved;
d. the back flushing device in the aeration chamber regularly performs scouring and cleaning operation on the aeration branch pipes and the aerators, prevents the aeration branch pipes and the aerators from being blocked by sludge impurities in sewage to influence the aeration effect and the aeration time of the sewage, and when the back flushing device works, the back flushing valve is opened to enable the back flushing pump to convey clean water into the aeration branch pipes and the aerators through the back flushing pipes so as to scour the insides of the back flushing pump;
e. the sewage treated by the aeration chamber enters a sedimentation tank through a sewage conveying pipeline;
3) flocculation and separation of sludge:
a. the sewage in the aeration chamber is conveyed into the sedimentation tank through the sewage conveying pipe, firstly enters the flocculation chamber for flocculation treatment, and when the sewage enters the flocculation chamber, the flocculation chemical box on the outer side wall of the flocculation chamber
The switch valve is opened, the flocculation reagent box is connected with the spray lance through the medicine feeding pipe, and the flocculation reagent is sprayed into the sewage through the spray lance;
b. when the flocculation reagent box is used for throwing the flocculation reagent, the stirrer at the bottom of the flocculation chamber is opened, sewage in the flocculation chamber is stirred through the dual stirring frame, the stirring motor drives the stirring shaft to rotate through the motor shaft, the stirring shaft drives the dual stirring frame to rotate, and the sewage and the flocculation reagent are uniformly mixed through the stirring action of the first stirring frame, the second stirring frame and the stirring rod on the dual stirring frame, so that the sedimentation efficiency of sludge is improved, and the sludge can be conveniently separated at the later stage;
c. the sewage treated by the flocculation chamber enters a settling chamber for settling treatment, the sludge in the sewage is separated from the sewage after the settling treatment of the settling chamber, the sludge is discharged from a sludge outlet at the bottom of a settling tank, and the sewage is discharged from a water outlet at the upper part of the settling tank and enters a disinfection tank for disinfection treatment;
4) and (3) disinfection treatment of sewage:
sewage in the drip chamber is discharged from the outlet and is carried out final disinfection processing in the disinfection pond, the disinfection pole sprays disinfectant in the disinfection pond, harmful pathogenic microorganism in with the sewage kills through disinfectant, thereby make the quality of water of handling better, when sewage enters into the disinfection pond, stirring rod in the disinfection pond stirs the sewage in the disinfection pond, thereby make sewage more abundant with disinfectant's contact, thereby improve the disinfection of sewage, stirring cylinder passes through the rotation that the piston rod drove the (mixing) shaft, the (mixing) shaft drives the rotation of stirring rod again, thereby stir the mixed action to sewage in the disinfection pond.
2. The method for purifying the lake water body by aeration and oxygenation according to claim 1, which is characterized in that: in the step 4), the disinfectant is one or more of peroxyacetic acid, hydrogen peroxide or peroxyglutaric acid.
3. The method for purifying the lake water body by aeration and oxygenation according to claim 1, which is characterized in that: the rotating device comprises a rotating motor and a connecting sleeve, the rotating motor is connected with the upper end of the connecting sleeve through a rotating shaft, and the lower end of the connecting sleeve is connected with the fixed shaft.
4. The method for purifying the lake water body by aeration and oxygenation according to claim 1, which is characterized in that: the baffle plate comprises a first baffle plate and a second baffle plate, the first baffle plate and the baffle plate are Z-shaped, and the first baffle plate is positioned on the left side of the second baffle plate.
5. The method for purifying the lake water body by aeration and oxygenation according to claim 1, which is characterized in that: the aeration chamber is also internally provided with a backflushing device, the backflushing device comprises a backflushing pipe and a backflushing valve, the backflushing valve is positioned on the backflushing pipe, the backflushing pipe is communicated with the aeration branch pipe through the fixing pipe, and the backflushing pipe extends out of the aeration chamber and is connected with a backflushing pump.
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| CN106976991B (en) * | 2017-04-07 | 2020-03-20 | 常州大学 | River pollutant removing device |
| CN107352712B (en) * | 2017-08-13 | 2020-11-27 | 齐鲁工业大学 | Energy-concerving and environment-protective type sewage treatment device based on water pump protection |
| CN109422368A (en) * | 2017-08-22 | 2019-03-05 | 江苏佳鑫环保工程有限公司 | A kind of sewage treatment cleaning equipment that environment protecting is good |
| CN107867781B (en) * | 2017-10-30 | 2020-05-29 | 浙江鑫直建筑有限公司 | Lake water body purification device and treatment method thereof |
| CN108203196A (en) * | 2017-12-16 | 2018-06-26 | 朱浩奇 | A kind of municipal sewage treatment purifier |
| CN108558089B (en) * | 2018-02-07 | 2023-11-24 | 浙江工商职业技术学院 | Lake water purification device and treatment method thereof |
| CN108218084A (en) * | 2018-02-07 | 2018-06-29 | 浙江工商职业技术学院 | A kind of urban sewage treatment system and its processing method |
| CN113371904B (en) * | 2021-07-08 | 2024-01-23 | 宜昌市水利水电勘察设计院有限公司 | Biological slow filtering purification system and purification method for rural domestic sewage |
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