CN111252952A - Aeration coagulation device for treating micro-polluted water - Google Patents
Aeration coagulation device for treating micro-polluted water Download PDFInfo
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- CN111252952A CN111252952A CN202010162743.4A CN202010162743A CN111252952A CN 111252952 A CN111252952 A CN 111252952A CN 202010162743 A CN202010162743 A CN 202010162743A CN 111252952 A CN111252952 A CN 111252952A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
The invention discloses an aeration coagulation device for treating micro-polluted water, which mainly comprises a coagulation tank part, a scum removing device part, an aeration pipe network part and a gas generating device part; the coagulation tank part comprises a coagulation tank, and a guide wall and a plurality of partition plates which are vertical are arranged in the coagulation tank along the water flow direction; the scum removing device part comprises a scum scraper and a plurality of scum collecting and discharging grooves; the aeration pipe network part comprises an aeration main pipe and a plurality of stages of aeration branch pipes, and aeration holes are uniformly arranged on the last stage of aeration branch pipe; the gas generating device is composed of an ozone generator, a blower and a gas mixing chamber outside the coagulation tank. The invention can treat micro-polluted water in the coagulation stage, reduce the content of organic matters, carry out primary disinfection and oxidation, reduce the burden of subsequent water treatment, reduce the amount of mud in precipitation, reduce the number of backwashing, prolong the service life of filter materials, reduce the use of a disinfectant and toxic byproducts, and improve the quality of effluent.
Description
Technical Field
The invention relates to the technical field of micro-polluted water treatment, in particular to an aeration coagulation device for treating micro-polluted water.
Background
With the improvement of the industrialization degree of China, the water sources with higher pollution are gradually reduced, but part of water sources of water plants face the condition of micro-pollution of the water sources, although the concentration of pollutants is low, the harm is larger, toxic byproducts can be generated during disinfection, bacteria breeding is caused, and the like. But the slightly polluted water is difficult to treat and has higher cost. The problem of micro-pollution of water sources is another problem of limiting the quality of outlet water of water plants, and particularly the old water plants lack processes for treating micro-polluted water.
Disclosure of Invention
In order to solve the problems, the invention provides an aeration coagulation device for treating micro-polluted water, which can realize the treatment of the micro-polluted water, reduce the burden of subsequent water treatment and improve the quality of outlet water.
The invention adopts the following technical scheme: an aeration coagulation device for treating micro-polluted water is characterized in that: the device mainly comprises a coagulation tank part, a scum removing device part, an aeration pipe network part and a gas generating device part; the coagulation tank part comprises a coagulation tank, one side of the coagulation tank is provided with a water inlet pipe, the other side of the coagulation tank is connected with a sedimentation tank, and a guide wall and a plurality of partition plates which are vertical are arranged in the coagulation tank along the water flow direction; the scum removing device comprises a scum scraper and a plurality of scum collecting and discharging grooves, the working surface of the scum scraper is arranged at the position with the same height as the liquid level of the coagulation tank in the coagulation tank, and the upper surfaces of the scum collecting and discharging grooves are level with the liquid level of the coagulation tank; the aeration pipe network part comprises an aeration main pipe and a plurality of stages of aeration branch pipes, the last stage of aeration branch pipe is close to the coagulation tank and is distributed dispersedly, and aeration holes are uniformly arranged on the last stage of aeration branch pipe; the gas generating device part consists of an ozone generator, a blower and a gas mixing chamber outside the coagulation tank, the ozone generator and the blower are respectively connected to the gas mixing chamber through pipelines, the gas mixing chamber is also provided with a controller for controlling the gas mixing proportion and the aeration intensity, and the output end of the gas mixing chamber is connected with an aeration main pipe of the aeration pipe network part.
Further, the aeration coagulation device for treating the micro-polluted water is characterized in that: the coagulant is filled in the coagulation tank, the corresponding aeration intensity is controlled through the GT value, the coagulant is rapidly and uniformly mixed, the GT value is reduced along the water flow direction, and the aeration intensity is controlled to be reduced.
Further, the aeration coagulation device for treating the micro-polluted water is characterized in that: the baffles in the coagulation tank are alternately arranged one above the other, the whole coagulation tank is divided into a plurality of separation tanks, and the water flow passing openings of the separation tanks are alternately arranged one above the other, so that the full purification of water is facilitated.
Further, the aeration coagulation device for treating the micro-polluted water is characterized in that: the pipe diameters of aeration branch pipes or openings of aeration holes of the aeration pipe network part in the coagulation tank or different separation tanks are different, so that the aeration intensity of each separation tank is convenient to control, the GT value is controlled, and the equipment cost can be saved.
Further, the aeration coagulation device for treating the micro-polluted water is characterized in that: the aeration pipe network part is lower than the liquid level of the coagulation tank, so that the slag scraper is prevented from working, and scum can be removed without dead angles.
Further, the aeration coagulation device for treating the micro-polluted water is characterized in that: the aeration holes on the aeration branch pipes are positioned at a connecting line position of 45 degrees below the axis of the aeration branch pipes horizontally so as to reduce the blockage of the aeration holes, the gas is quickly stirred in the tank to oxidize organic matters, the floating slag with low density is driven by air floatation to float upwards, and volatile organic matters are blown out by a blow-off method.
Further, the aeration coagulation device for treating the micro-polluted water is characterized in that: the aeration pipe network part adopts mixed aeration of air and ozone, and macromolecular organic matters in water are oxidized into micromolecular organic matters, so that the activated carbon adsorption during filtration is facilitated; removing the flocculating constituent with lower density by an air floatation method, and improving the removing effect of the flocculating constituent; will volatilizeAfter the organic matter and ozone are oxidized, partial non-volatile macromolecular organic matter is changed into volatile micromolecular organic matter, and then the volatile micromolecular organic matter is removed by using a blow-off method, and Fe can be removed by ozone2+Oxidation to Fe3+Has the effects of coagulant aid and iron removal.
Further, the aeration coagulation device for treating the micro-polluted water is characterized in that: and an emptying pipe is arranged in the coagulation tank close to the bottom of the tank and used for maintaining and repairing discharged water.
Further, the aeration coagulation device for treating the micro-polluted water is characterized in that: the concrete pool is internally provided with a plurality of sets of mechanical stirring devices, each set of mechanical stirring device comprises a rotating shaft, a paddle board and an impeller, the rotating shaft is arranged in the vertical direction, the paddle board is arranged at the upper end of the rotating shaft, and the impellers are connected with the two ends of the paddle board.
The invention has the beneficial effects that: 1. the micro-polluted water is oxidized by mixing and aerating air and ozone, so that the waste of ozone is avoided, the cost is saved, toxic and harmful byproducts generated during disinfection are reduced, and the effluent quality is improved. 2. The mixed aeration of the blower and the ozone generator is convenient for controlling the gas strength of the blower, so that the aeration strength is easy to control, and each coagulation process is in a better GT value. 3. And (3) performing aeration to oxidize volatile organic compounds and nonvolatile organic compounds by using an air stripping method to generate partial stripping removal of the volatile organic compounds. 4. The aeration uses the air flotation method to separate the flocculating constituents with different densities, the flocculating constituent with small density floats on the liquid surface, and is scraped away, collected and discharged by the slag scraper, so that the flocculating constituent with small density is difficult to precipitate during precipitation, and the flocculating constituent with large density is easier to precipitate during precipitation. 5. The ozone can be used for preliminary disinfection, and the dosage of the disinfectant in the disinfection link is reduced. The ozone can convert Fe2+Oxidation to Fe3+It can play the effect of coagulant aid and can also remove iron. 6. The horizontal downward 45 degrees of aeration hole can alleviate aeration hole and block up, and the aeration pipe is whole to be located below the liquid level, can not influence and scrape sediment machine operation. 6. The aeration coagulation device can reduce flocculating constituents with low density, blow off partial organic matters, oxidize macromolecular organic matters into micromolecular organic matters, reduce filter material burden during filtering and reduce the size of the filter materialThe molecular organic matter is convenient for the adsorption of the active carbon. 7. This aeration coagulation device reforms transform the pond, only needs to add the aeration pipe, scrape sediment machine and gas generating device, and is with low costs, and the transformation of being convenient for needs little occupation of land space except gas generating device, and other do not need extra area basically.
Drawings
FIG. 1 is a schematic sectional view showing the coagulation/aeration apparatus for treating micro-polluted water according to example 1 of the present invention.
FIG. 2 is a schematic side view of an aeration coagulation apparatus for treating micro-polluted water according to example 1 of the present invention.
FIG. 3 is a schematic view showing the structure of aeration holes of the aeration coagulation apparatus for treating micro-polluted water according to example 1 of the present invention.
FIG. 4 is a schematic sectional view showing the coagulation treatment apparatus for aeration of slightly polluted water according to example 2 of the present invention.
Description of reference numerals: 1. the device comprises a coagulation tank, 11, a water inlet pipe, 12, a guide wall, 13, a first partition board, 14, a second partition board, 15, a third partition board, 16, a sedimentation tank, 17, an emptying pipe, 2, a slag scraper, 21, a scum collecting and discharging groove, 3, an aeration main pipe, 31, a primary aeration branch pipe, 32, a secondary aeration branch pipe, 33, a final aeration branch pipe, 34, aeration holes, 4, a gas mixing chamber, 41, a blower, 42, an ozone generator, 43, an air pipe, 44, an ozone pipe, 45, a controller, 5, a rotating shaft, 51, a paddle board, 52 and an impeller.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby clearly defining the scope of the present invention.
Example 1:
as shown in figures 1-3, an aeration coagulation device for treating micro-polluted water mainly comprises a coagulation tank part, a descumming device part, an aeration pipe network part and a gas generation device part.
The coagulation tank part comprises a coagulation tank 1, a water inlet pipe 11 is arranged on one side of the coagulation tank 1, the other side of the coagulation tank is connected with a sedimentation tank 16, and a guide wall 12 and 3 partition plates, a first partition plate 13, a second partition plate 14 and a third partition plate 15 which are vertical are arranged in the coagulation tank 1 along the water flow direction. The guide walls 12, the first partition plates 13, the second partition plates 14 and the third partition plates 15 are alternately arranged one above the other to divide the whole coagulation tank 1 into 3 separation tanks, and water flow passing openings of the separation tanks are alternately arranged one above the other to facilitate the sufficient purification of water. The coagulation tank 1 is connected with an external sedimentation tank 16, and water is treated in the next step.
The scum removing device comprises a scum scraper 2 and 4 scum collecting and discharging grooves 21, the working surface of the scum scraper 2 is arranged at the position which is equal to the liquid level of the coagulation tank in the coagulation tank 1 in height, the upper surface of the scum collecting and discharging grooves 21 is flat with the liquid level of the coagulation tank 1, and the scum collecting and discharging grooves 21 are attached to two sides of a partition plate with a water flow passing opening facing downwards in the partition tank.
The aeration pipe network part comprises an aeration main pipe 3, three stages of aeration branch pipes, a first stage aeration branch pipe 31, a second stage aeration branch pipe 32 and a last stage aeration branch pipe 33, wherein the last stage aeration branch pipe 33 is close to the coagulation tank 1 and is distributed, and aeration holes 34 are uniformly arranged on the last stage aeration branch pipe 33. The aeration pipe network is located below the liquid level in the coagulation tank 1, so that the slag scraper 2 is prevented from working, and the slag scraper 2 can remove scum without dead angles. The aeration holes 34 on the last-stage aeration branch pipe 33 are positioned at a connecting line position of 45 degrees downwards horizontally from the axis of the last-stage aeration branch pipe 33 so as to reduce the blockage of the aeration holes, the gas is quickly stirred in the tank to oxidize organic matters, the floating slag with smaller density is driven by air floatation to float upwards, and volatile organic matters are blown out by a blowing-off method.
The gas generating device part consists of an ozone generator 42, a blower 41 and a gas mixing chamber 4 outside the coagulation tank 1, the ozone generator 42 and the blower 41 are respectively connected to the gas mixing chamber 4 through an ozone pipe 44 and an air pipe 43, the gas mixing chamber 4 is also provided with a controller 45 for controlling the gas mixing proportion and the aeration intensity, and the output end of the gas mixing chamber 4 is connected with the aeration main pipe 3 of the aeration pipe network part.
The coagulating basin 1 is internally provided with a coagulant, the corresponding aeration intensity is controlled through the GT value, the coagulant is rapidly and uniformly mixed, the GT value is reduced along the water flow direction, and the aeration intensity is controlled to be reduced.
The pipe diameters of the aeration branch pipes or the openings of the aeration holes 34 of the aeration pipe network part in the coagulation tank 1 or different separation tanks are different, so that the aeration intensity of each separation tank is convenient to control, the GT value is controlled, and the equipment cost can be saved.
The aeration pipe network part adopts mixed aeration of air and ozone, and macromolecular organic matters in water are oxidized into micromolecular organic matters, so that the activated carbon adsorption during filtration is facilitated; removing the flocculating constituent with lower density by an air floatation method, and improving the removing effect of the flocculating constituent; after the volatile organic compounds and ozone are oxidized, partial non-volatile macromolecular organic compounds are changed into volatile micromolecular organic compounds, and then the volatile micromolecular organic compounds are removed by using a blow-off method, and Fe can be removed by ozone2+Oxidation to Fe3+It can play the effect of coagulant aid and can also remove iron.
An emptying pipe 17 is arranged in the coagulation tank 1 and close to the bottom of the tank, and is used for maintaining and repairing after water is drained.
Example 2:
as shown in figure 4, the aeration coagulation device for treating the micro-polluted water mainly comprises a coagulation tank part, a descumming device part, an aeration pipe network part and a gas generation device part.
The coagulation tank part comprises a coagulation tank 1, wherein 3 sets of mechanical stirring devices are further arranged in the coagulation tank 1, each set of mechanical stirring device comprises a rotating shaft 5, a paddle board 51 and an impeller 52, the rotating shaft 5 is arranged in the vertical direction, the paddle board 51 is arranged at the upper end of the rotating shaft 5, and two ends of the paddle board 51 are connected with the impellers 52. The other structure is the same as that of embodiment 1. Because of the mechanical stirring, the aeration intensity of the aeration device can be greatly reduced. Aeration mainly plays a role in oxidation and preliminary disinfection.
Without being limited thereto, any changes or substitutions that are not thought of through the inventive work are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (9)
1. An aeration coagulation device for treating micro-polluted water is characterized in that: the device mainly comprises a coagulation tank part, a scum removing device part, an aeration pipe network part and a gas generating device part; the coagulation tank part comprises a coagulation tank, one side of the coagulation tank is provided with a water inlet pipe, the other side of the coagulation tank is connected with a sedimentation tank, and a guide wall and a plurality of partition plates which are vertical are arranged in the coagulation tank along the water flow direction; the scum removing device comprises a scum scraper and a plurality of scum collecting and discharging grooves, the working surface of the scum scraper is arranged at the position with the same height as the liquid level of the coagulation tank in the coagulation tank, and the upper surfaces of the scum collecting and discharging grooves are level with the liquid level of the coagulation tank; the aeration pipe network part comprises an aeration main pipe and a plurality of stages of aeration branch pipes, the last stage of aeration branch pipe is close to the coagulation tank and is distributed dispersedly, and aeration holes are uniformly arranged on the last stage of aeration branch pipe; the gas generating device part consists of an ozone generator, a blower and a gas mixing chamber outside the coagulation tank, the ozone generator and the blower are respectively connected to the gas mixing chamber through pipelines, the gas mixing chamber is also provided with a controller for controlling the gas mixing proportion and the aeration intensity, and the output end of the gas mixing chamber is connected with an aeration main pipe of the aeration pipe network part.
2. An aerated concrete unit for the treatment of micro-polluted water according to claim 1, characterized in that: the coagulant is filled in the coagulation tank, the corresponding aeration intensity is controlled through the GT value, the coagulant is rapidly and uniformly mixed, the GT value is reduced along the water flow direction, and the aeration intensity is controlled to be reduced.
3. An aerated concrete unit for the treatment of micro-polluted water according to claim 1, characterized in that: the baffles in the coagulation tank are alternately arranged from top to bottom, the whole coagulation tank is divided into a plurality of separation tanks, and water flow passing openings of the separation tanks are alternately arranged from top to bottom.
4. An aerated concrete unit according to claim 1 or 3 for the treatment of micro-polluted water, characterized in that: the pipe diameters of aeration branch pipes or openings of aeration holes of the aeration pipe network part in the coagulation tank or different separation tanks are different.
5. An aerated concrete unit for the treatment of micro-polluted water according to claim 1, characterized in that: the aeration pipe network part is lower than the liquid level of the coagulation tank.
6. An aerated concrete unit for the treatment of micro-polluted water according to claim 1, characterized in that: and the aeration holes on the aeration branch pipes are positioned on a connecting line of 45 degrees horizontally downwards from the axes of the aeration branch pipes.
7. An aerated concrete unit for the treatment of micro-polluted water according to claim 1, characterized in that: the aeration pipe network part adopts mixed aeration of air and ozone, and macromolecular organic matters in water are oxidized into micromolecular organic matters, so that the activated carbon adsorption during filtration is facilitated; removing the flocculating constituent with lower density by an air floatation method, and improving the removing effect of the flocculating constituent; after the volatile organic compounds and ozone are oxidized, partial non-volatile macromolecular organic compounds are changed into volatile micromolecular organic compounds, and then the volatile micromolecular organic compounds are removed by using a blow-off method, and Fe can be removed by ozone2+Oxidation to Fe3+Has the effects of coagulant aid and iron removal.
8. An aerated concrete unit for the treatment of micro-polluted water according to claim 1, characterized in that: the inside of the coagulation tank is provided with an emptying pipe close to the bottom of the tank.
9. An aerated concrete unit for the treatment of micro-polluted water according to claim 1, characterized in that: the concrete pool is internally provided with a plurality of sets of mechanical stirring devices, each set of mechanical stirring device comprises a rotating shaft, a paddle board and an impeller, the rotating shaft is arranged in the vertical direction, the paddle board is arranged at the upper end of the rotating shaft, and the impellers are connected with the two ends of the paddle board.
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| CN202010162743.4A CN111252952A (en) | 2020-03-10 | 2020-03-10 | Aeration coagulation device for treating micro-polluted water |
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| CN202010162743.4A CN111252952A (en) | 2020-03-10 | 2020-03-10 | Aeration coagulation device for treating micro-polluted water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112607958A (en) * | 2020-11-26 | 2021-04-06 | 安徽海航环保科技有限公司 | Green ecological sewage treatment method |
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2020
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| CN203513318U (en) * | 2013-09-27 | 2014-04-02 | 武汉森泰环保工程有限公司 | Ozone air floatation combination device |
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| CN112607958A (en) * | 2020-11-26 | 2021-04-06 | 安徽海航环保科技有限公司 | Green ecological sewage treatment method |
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