CN213803120U - Plateau sewage treatment denitrogenation spiral-flow type biochemical reaction device and equipment thereof - Google Patents
Plateau sewage treatment denitrogenation spiral-flow type biochemical reaction device and equipment thereof Download PDFInfo
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- CN213803120U CN213803120U CN202022952982.8U CN202022952982U CN213803120U CN 213803120 U CN213803120 U CN 213803120U CN 202022952982 U CN202022952982 U CN 202022952982U CN 213803120 U CN213803120 U CN 213803120U
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Abstract
The utility model provides a biochemical reaction device of plateau sewage treatment denitrification spiral-flow type and equipment thereof, wherein, the biochemical reaction device comprises a tank body, an aerator and a central guide cylinder, the upper end of the tank body is provided with a water outlet pipe, the lower end of the tank body is provided with a water inlet pipe, the water outlet pipe is provided with a return pipe, and the return pipe is communicated with the lower end in the tank body; the aerator is flatly laid in the middle of the tank body, and the tank body is divided into an upper aerobic zone and a lower anoxic zone by the aerator; an aeration fan is arranged outside the tank body and is connected with the aerator through a guide pipe; the central guide cylinder is arranged in the tank body and is arranged in the middle area below the aerator. The utility model discloses simple structure, denitrogenation are efficient, oxygenate efficiently, take up an area of province, the investment is low, engineering construction cycle is short and the practicality is strong, very is fit for using in plateau district.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, especially, relate to a biochemical reaction unit of plateau sewage treatment denitrogenation spiral-flow type and equipment thereof.
Background
Along with the development of industrial and agricultural production and the improvement of the living standard of people, the discharge amount of nitrogen-containing organic matters is increased sharply, and in order to solve the problem, a large number of wastewater biological treatment projects are emerged continuously, although the organic matter pollution is well restrained; however, the discharged water of the secondary treatment has high ammonia nitrogen and total nitrogen, and is still a serious environmental pollution source. The harm of nitrogen pollution is great, nitrogen enters a water body, not only can induce eutrophication of the water body to cause disorder of an aquatic ecosystem, but also can consume dissolved oxygen to cause oxygen deficiency of the water body and influence oxygen transfer of fish gills to cause death of fish; the chlorine gas is processed to generate chloramine, which affects the chlorination and disinfection treatment. Therefore, cost effective control of nitrogen contamination is imperative.
There are many methods for denitrification of wastewater, including physical, chemical and biological methods. In contrast, the biological denitrification technology has the advantages of low investment, simple operation, easy treatment of generated secondary pollutants and the like, but most of the existing denitrification bioreactors have the problems of complex structure, high operation cost and high requirement on professional degree of operators.
In addition, the problem of oxygenation in high-altitude environments is also an important problem which always influences the standard discharge of the effluent, and the shortage of land is also a way for intensive construction.
SUMMERY OF THE UTILITY MODEL
In view of the deficiency of the prior art, the utility model discloses a biochemical reaction unit of plateau sewage treatment denitrogenation spiral-flow type and equipment thereof, its simple structure, denitrogenation are efficient, oxygenate efficiently, account for the province, investment is low, engineering construction cycle is short and the practicality is strong, is particularly suitable for using in plateau district.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a biochemical reaction device of plateau sewage treatment denitrogenation spiral-flow type includes:
the upper end of the tank body is provided with a water outlet pipe, the lower end of the tank body is provided with a water inlet pipe, the water outlet pipe is provided with a return pipe, and the return pipe is communicated with the lower end in the tank body;
the aerator is flatly laid in the middle of the tank body, and the tank body is divided into an upper aerobic zone and a lower anoxic zone by the aerator; an aeration fan is arranged outside the tank body and is connected with the aerator through a guide pipe;
the central guide flow cylinder is arranged in the tank body and is arranged in the middle area below the aerator.
As a further description of the above technical solution: and the backflow pipe is provided with a circulating backflow pump, and the circulating backflow pump is used for pushing the rotational flow of the water body in the tank body to lift.
As a further description of the above technical solution: the connection outlet of the backflow pipe and the tank body is a first outlet, the connection outlet of the water inlet pipe and the tank body is a second outlet, the first outlet and the second outlet are tangent to the inner circular surface of the tank body, and the first outlet and the second outlet are in the clockwise direction or the anticlockwise direction.
As a further description of the above technical solution: the lower end of the tank body is also provided with a mud discharge and air release pipe and a sand discharge pipe.
As a further description of the above technical solution: and the tank body is provided with a dissolved oxygen meter, a pH meter and a thermometer which are used for monitoring the water body data in the tank body in real time.
As a further description of the above technical solution: the aerator is made of an ultrafiltration membrane or a microfiltration membrane and comprises a plurality of aeration nozzles which are distributed at equal intervals.
As a further description of the above technical solution: the lower end of the central guide cylinder is a horn-shaped opening.
As a further description of the above technical solution: the tank body is made by rolling steel plates, or is made by processing HDPE impermeable films, or is made by piling reinforced concrete.
The biochemical reaction equipment comprises a solid-liquid separation tank and a plurality of biochemical reaction devices, wherein the solid-liquid separation tank is communicated with one biochemical reaction device, and the biochemical reaction devices are sequentially communicated with the other biochemical reaction devices in series.
As a further description of the above technical solution: the number of the biochemical reaction devices is 2-4.
As a further description of the above technical solution: the solid-liquid separation tank is a horizontal flow sedimentation tank or a vertical flow sedimentation tank or an inclined plate type sedimentation tank.
As a further description of the above technical solution: the solid-liquid separation tank is used for carrying out solid-liquid separation in a mode of arranging a membrane bioreactor under liquid.
As a further description of the above technical solution: the biochemical reaction device connected with the solid-liquid separation tank is a first biochemical reaction device, the solid-liquid separation tank is communicated with the tank body of the first biochemical reaction device through a water inlet pipe, and the water inlet pipes of the tank bodies of the other biochemical reaction devices are communicated with the water outlet pipe of the tank body connected in series.
The utility model discloses following beneficial effect has:
1. the utility model discloses in, through setting up the circulating pump and entering the inlet tube and the back flow of jar body along tangential direction, form whirl and ascending mobile energy, realized in the reactor activated sludge's suspension state and activated sludge the intensive mixing of microorganism and pollutant in the sewage, and then degrade organic pollutant, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen and phosphate etc. in the sewage and get rid of, realize the high-efficient purification of sewage.
2. The utility model discloses in, through setting up the aerator in jar body middle part, the air is good oxygen because gravity action rebound forms upper portion, the state of lower part oxygen deficiency to form a set of spiral-flow type AO reaction unit, according to the raw water quality of water of difference, processing purpose and requirement, the high difference of packing layer, the shared proportion in good oxygen district, anaerobic zone also changes thereupon, multiunit spiral-flow type AO reaction unit combines together, has formed good short-cut nitrification and denitrification condition, has efficient sewage denitrification efficiency.
3. The utility model provides a pair of biochemical reaction equipment of plateau sewage treatment denitrogenation spiral-flow type, simple structure, denitrogenation are efficient, oxygenate efficiently, take up an area of province, the investment is low, engineering construction cycle is short and the practicality is strong, especially adapted uses in plateau district. The biochemical reaction device is a spiral-flow biochemical reaction device, so that the volume load of the biochemical reaction device is improved, the biochemical reaction device can be operated efficiently, and the defects that the existing efficient biochemical reactor is complex in structure, high in investment and high in requirement on the professional degree of operators are overcome.
Drawings
FIG. 1 is a schematic structural view of a rotational flow type biochemical reaction apparatus for denitrification in plateau sewage treatment provided by the present invention;
FIG. 2 is a top view of the rotational flow type biochemical reactor for denitrification in plateau sewage treatment provided by the present invention;
FIG. 3 is the utility model provides a pair of biochemical reaction equipment of plateau sewage treatment denitrogenation spiral-flow type's structural schematic.
Wherein: 1-tank body; 2-a solid-liquid separation tank; 3-water inlet pipe; 4-water outlet pipe; 5-a return pipe; 6-circulating reflux pump; 7-an aerator; 8-an aeration fan; 9-a flow guide pipe; 10-a central draft tube; 11-sludge discharge and emptying pipe; 12-a sand discharge pipe; 13-dissolved oxygen meter; 14-a pH meter; 15-a thermometer; 16-air nozzle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-2, a biochemical reaction device of a denitrification rotational flow type for plateau sewage treatment comprises a tank body 1, an aerator 7 and a central guide cylinder 10, wherein a water outlet pipe 4 is arranged at the upper end of the tank body 1, a water inlet pipe 3 is arranged at the lower end of the tank body 1, a return pipe 5 is arranged on the water outlet pipe 4, and the return pipe 5 is communicated with the inner lower end of the tank body 1; the aerator 7 is flatly laid in the middle of the tank body 1, and the tank body 1 is divided into an upper aerobic zone and a lower anoxic zone by the aerator 7; an aeration fan 8 is arranged outside the tank body 1, and the aeration fan 8 is connected with an aerator 7 through a guide pipe 9; the central guide shell 10 is arranged in the tank body 1, and the central guide shell 10 is arranged in the middle area below the aerator 7. The aerator 7 is arranged in the middle of the tank body 1, the air moves upwards under the action of gravity to form an upper aerobic state and a lower anoxic state, so that a group of spiral-flow type A/O reaction devices are formed, the packing layers have different heights according to different raw water qualities and treatment purposes and requirements, the proportion of the aerobic zone to the anaerobic zone is changed accordingly, and the multiple groups of spiral-flow type A/O reaction devices are combined to form good short-cut nitrification and denitrification conditions and have high-efficiency sewage denitrification efficiency.
In this embodiment, the return pipe 5 is provided with a circulating reflux pump 6, and the circulating reflux pump 6 is used for pushing the rotational flow of the water body in the tank body 1 to lift; the outlet of being connected of back flow 5 and jar body 1 is first export, the outlet of being connected of inlet tube 3 and jar body 1 is the second export, first export and second export all are tangent with jar internal circular surface of body 1, just first export and second export all are in clockwise or anticlockwise, form whirl and ascending mobile energy, have realized the suspended state of activated sludge in the reactor and the intensive mixing of microorganism and pollutant in the sewage in the activated sludge, and then degrade organic pollutant, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen and phosphate etc. in the sewage and get rid of, realize the high-efficient purification of sewage.
In this embodiment, the lower end of the tank body 1 is further provided with a sludge discharge and emptying pipe 11 and a sand discharge pipe 12, so that dirt can be discharged conveniently.
In this embodiment, the tank body 1 is provided with a dissolved oxygen meter 13, a pH meter 14 and a thermometer 15 for monitoring the data of the water in the tank body in real time, so that an operator can know the dissolved oxygen content, the pH value and the temperature of the water in the tank body 1 in real time.
In this embodiment, the aerator 7 is made of an ultrafiltration membrane or a microfiltration membrane, and includes a plurality of aeration nozzles 16 distributed at equal intervals, so as to ensure oxygenation efficiency and capacity at high altitude.
In this embodiment, the lower end of the central guide shell 10 is a trumpet-shaped opening, so as to facilitate the discharge of sludge.
In this embodiment, the tank body 1 is made by rolling steel plates, or is made by processing HDPE impermeable films, or is made by stacking reinforced concrete.
The utility model provides a biochemical reaction equipment of plateau sewage treatment denitrogenation spiral-flow type, includes solid-liquid separation pond 2 and a plurality of above-mentioned biochemical reaction unit, solid-liquid separation pond and one of them biochemical reaction unit intercommunication, this biochemical reaction unit and the rest of the biochemical reaction unit is established ties the intercommunication in proper order.
In this embodiment, the number of the biochemical reaction devices is 2-4; the solid-liquid separation tank 2 is a horizontal flow sedimentation tank or a vertical flow sedimentation tank or an inclined plate type sedimentation tank; the solid-liquid separation tank 2 is a separation tank for performing solid-liquid separation by arranging a membrane bioreactor under liquid.
In this embodiment, the biochemical reaction device connected to the solid-liquid separation tank 2 is a first biochemical reaction device, the solid-liquid separation tank is communicated with the tank body 1 of the first biochemical reaction device through a water inlet pipe 3, and the water inlet pipes 3 of the tank bodies 1 of the remaining biochemical reaction devices are communicated with the water outlet pipe 4 of the tank body 1 connected in series.
The utility model discloses the theory of operation as follows:
firstly, an aeration fan 8 is started, aeration air starts to move upwards in an aerator 7 arranged in the middle of a tank body 1 under the action of gravity, an aerobic aeration zone is formed at the upper part of the aerator 7, an anoxic zone is formed at the lower part of the aerator 7, and a rotational flow type A/O treatment unit is formed.
The high ammonia nitrogen inflow and the reflux liquid treated by the solid-liquid separation tank 2 are lifted by the circulating reflux pump 6 and enter the cylindrical tank body 1 along the tangent line, the liquid is guided by the central guide cylinder 10 under the action of the rotational flow, the suspension state of the activated sludge in the reactor and the sufficient mixing of microorganisms in the activated sludge and pollutants in the sewage are realized, the organic pollutants, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen phosphate and the like are degraded and removed, and the sewage is efficiently purified.
High ammonia nitrogen inflow enters the circular tank body 1 along the tangent water inlet pipe in a rotational flow mode, ammonia nitrogen is oxidized into nitrate nitrogen by microorganisms after aeration, and the nitrate nitrogen enters the anoxic zone through the circulating reflux pump through the reflux pipe to be subjected to efficient denitrification.
The design scale of the domestic sewage treatment plant designed and operated by adopting the cyclone biochemical reactor in the embodiment is 8000m3The water quality of inlet water is as follows: COD is 286mg/L, ammonia nitrogen is 35mg/L, and total nitrogen is 55 mg/L; the effluent quality is as follows: COD is less than or equal to 20mg/L, ammonia nitrogen is less than or equal to 0.5mg/L, and total nitrogen is less than or equal to 10 mg/L. The specification of the reaction equipment is phi 12 multiplied by 11m, and the three-stage setting is realized. Solid-liquid separation is carried out in a mode of arranging a membrane bioreactor under liquid. The investment per ton of water is about 2000 yuan, the cost per ton of water treatment is about 0.80 yuan, and the construction period is about 45 days. Therefore, the utility model provides a spiral-flow type biological reaction equipment has shown area province, engineering investment is low, construction cycle is short, denitrogenation is efficient, the technical advantage that the working costs is low.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (10)
1. The utility model provides a biochemical reaction unit of plateau sewage treatment denitrogenation spiral-flow type which characterized in that includes:
the upper end of the tank body is provided with a water outlet pipe, the lower end of the tank body is provided with a water inlet pipe, the water outlet pipe is provided with a return pipe, and the return pipe is communicated with the lower end in the tank body;
the aerator is flatly laid in the middle of the tank body, and the tank body is divided into an upper aerobic zone and a lower anoxic zone by the aerator; an aeration fan is arranged outside the tank body and is connected with the aerator through a guide pipe;
the central guide flow cylinder is arranged in the tank body and is arranged in the middle area below the aerator.
2. The biochemical reactor of claim 1, wherein the return pipe is provided with a recirculation return pump.
3. The biochemical reaction device of plateau sewage treatment denitrification rotational flow type of claim 1, wherein the outlet of the return pipe connected to the tank is a first outlet, the outlet of the inlet pipe connected to the tank is a second outlet, the first outlet and the second outlet are both tangent to the inner circular surface of the tank, and the first outlet and the second outlet are both in clockwise direction or counterclockwise direction.
4. The rotational flow type biochemical reaction device for denitrification in plateau sewage treatment according to claim 1, wherein a sludge discharge vent pipe and a sand discharge pipe are further arranged at the lower end of the tank body.
5. The biochemical reaction device of the plateau sewage treatment denitrification rotational flow type according to claim 1, wherein the tank body is provided with a dissolved oxygen meter, a pH meter and a thermometer for monitoring water data in the tank body in real time.
6. The biochemical reaction device of the plateau sewage treatment denitrification rotational flow type of claim 1, wherein the aerator is made of an ultrafiltration membrane or a microfiltration membrane, and comprises a plurality of aeration nozzles distributed at equal intervals.
7. The biochemical reactor of claim 1, wherein the central draft tube has a flared opening at a lower end thereof.
8. A biochemical reaction device of a denitrification rotational flow type for plateau sewage treatment, which is characterized by comprising a solid-liquid separation tank and a plurality of biochemical reaction devices as set forth in any one of claims 1 to 7, wherein the solid-liquid separation tank is communicated with one of the biochemical reaction devices, and the biochemical reaction devices are sequentially communicated with the rest of the biochemical reaction devices in series.
9. The rotational flow type biochemical reaction device for denitrification in plateau sewage treatment according to claim 8, wherein the number of the biochemical reaction devices is 2-4.
10. The biochemical reaction equipment of the plateau sewage treatment denitrification rotational flow type according to claim 8, wherein the solid-liquid separation tank is a horizontal flow sedimentation tank, a vertical flow sedimentation tank or a slant plate sedimentation tank.
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| CN112573658A (en) * | 2020-12-08 | 2021-03-30 | 西藏大学 | Plateau sewage treatment denitrogenation spiral-flow type biochemical reaction device and equipment thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112573658A (en) * | 2020-12-08 | 2021-03-30 | 西藏大学 | Plateau sewage treatment denitrogenation spiral-flow type biochemical reaction device and equipment thereof |
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