CN211141641U - Municipal administration sewage advanced treatment system - Google Patents
Municipal administration sewage advanced treatment system Download PDFInfo
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- CN211141641U CN211141641U CN201921562838.4U CN201921562838U CN211141641U CN 211141641 U CN211141641 U CN 211141641U CN 201921562838 U CN201921562838 U CN 201921562838U CN 211141641 U CN211141641 U CN 211141641U
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Abstract
The utility model discloses a municipal sewage advanced treatment system, which comprises a biological denitrification filter and a biological filter bed, wherein the biological denitrification filter is sequentially provided with a denitrification preparation area, a first modified biological filler area and a denitrification water outlet area from bottom to top; the biological filter bed is sequentially provided with a biological filter bed preparation area, a second modified biological filler area and a filter brick area from top to bottom, and the denitrification water outlet area is communicated with the biological filter bed preparation area through a drop aeration unit. The surfaces of the biological filler particles are provided with a multi-polar surface treatment layer, so that the growth of microorganisms is promoted while impurities in water are adsorbed, and the quality of effluent is improved under the combined action of the biological denitrification filter and the biological filter bed; the adopted equipment is simple equipment without large, complex or imported equipment, and the full-automatic operation reduces the labor cost, so that the investment cost and the operation cost are reduced; no complex and vulnerable instruments and equipment and no complex connection mode exist, so that the system runs stably and reliably.
Description
Technical Field
The utility model relates to a sewage treatment system, concretely relates to municipal administration sewage advanced treatment system.
Background
At present, the advanced treatment process of municipal sewage generally adopts a V-shaped filter tank, a fiber rotary disc filter tank, a deep bed denitrification filter tank and the like. The conventional advanced treatment process mainly aims at the treatment of conventional pollution indexes such as SS, COD, chromaticity, total nitrogen and the like. However, the effluent quality is unstable, and the biggest problem is that when the existing advanced treatment technology is upgraded from primary B to primary A, a large amount of added carbon sources and phosphorus removal agents are required to be added, the operation cost is too high, a large burden is brought to the operation of a sewage treatment plant, and the advanced treatment technology is unacceptable to many water plants. The dissolved oxygen in the effluent is too low, which is unfavorable for receiving water.
The traditional V-shaped filter tank has large floor area and high automatic control requirement, most of valves are pneumatic valves, the equipment is various, a back washing fan and a water pump need to be matched, the energy consumption is high, the civil engineering structure is complex, the construction difficulty is high, and the engineering cost is very high.
The fiber rotary disc filter tank has short service life, needs to be replaced for about 3 years, increases the operation cost, needs regular acid cleaning in actual operation, has higher maintenance cost and poorer impact load resistance, is not easy to recover after being blocked, causes frequent back washing and affects the operation stability of the process.
The deep bed denitrification filter only has a certain removal rate on TN under the condition of an external carbon source, and the effluent suspended matter is high. In addition, the deep bed denitrification filter tank is easy to form air resistance, is not beneficial to denitrification and also destroys the structure of the filter bed; because the filter material is deeper, the head loss is greater.
Therefore, the utility model provides a municipal wastewater advanced treatment system solves the above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims at providing a municipal administration sewage advanced treatment system is poor in order to solve the play water quality that current prior art exists, move unstability, investment cost and running cost high problem.
(II) technical scheme
In order to solve the technical problem, the utility model provides a municipal sewage advanced treatment system which comprises a biological denitrification filter and a biological filter bed, wherein the biological denitrification filter comprises a denitrification preparation area, a first modified biological filler area and a denitrification water outlet area, and the denitrification preparation area, the first modified biological filler area and the denitrification water outlet area are sequentially arranged from bottom to top; the biological filter bed comprises a biological filter bed preparation area, a second modified biological filler area and a filter brick area, the biological filter bed preparation area, the second modified biological filler area and the filter brick area are sequentially arranged from top to bottom, and the denitrification water outlet area is communicated with the biological filter bed preparation area through a drop aeration unit.
Preferably, the water drop aeration unit comprises a water outlet weir and a water flowing channel, the denitrification water outlet area is communicated with the biological filter bed preparation area through the water flowing channel, and the water outlet weir is arranged on the water flowing channel.
Preferably, the water drop aeration unit further comprises a first water distribution weir, the water outlet weir is located on the outer wall of the denitrification water outlet area and integrally formed with the denitrification water outlet area, the first water distribution weir is arranged on the outer wall of the biological filter bed preparation area and integrally formed with the biological filter bed preparation area, and the first water distribution weir and the water outlet weir are communicated through the water flowing channel.
Preferably, the water outlet weir comprises a water outlet weir pool and a water outlet weir dam arranged in the water outlet weir pool, the water outlet weir dam divides the water outlet weir pool into a backwashing drainage pool and a water outlet weir drop pool, and the incoming water is subjected to primary water drop through the water outlet weir dam; and a backwashing drainage valve is arranged at the bottom of the backwashing drainage pool, and the height of the water outlet weir is higher than that of the water outlet position of the denitrification water outlet area.
Preferably, the first water distribution weir comprises a water distribution weir pool and a first water distribution weir dam in the water distribution weir pool, the first water distribution weir dam divides the water distribution weir pool into a water distribution channel and a water drop tank, water in the water distribution channel is subjected to secondary water drop through the first water distribution weir dam, and the height of the first water distribution weir dam is higher than that of the water inlet of the biological filter bed preparation area.
Preferably, the inner wall of the preparation area of the biological filter bed is provided with a second water distribution weir, the wall of the preparation area of the biological filter bed is provided with an overflow channel, the water drop tank is communicated with the second water distribution weir through the overflow channel, and water in the water drop tank flows to the second water distribution weir through the overflow channel; and the weir wall of the second water distribution weir is provided with a second water distribution weir, and water of the second water distribution weir flows to the second modified biological filler region through the second water distribution weir for the third water drop.
Preferably, the surfaces of the biological filler particles in the first modified biological filler area and the second modified biological filler area are multi-polar surface treatment layers; the diameter of biological filler particles in the first modified biological filler area is 5-8 mm, and the diameter of biological filler particles in the second modified biological filler area is 1-5 mm.
Preferably, the system also comprises a sewage supply pool and a reservoir, wherein the denitrification preparation area is communicated with the sewage supply pool, and a water inlet pump is arranged between the denitrification preparation area and the sewage supply pool; the filter brick area is communicated with the water storage tank.
Preferably, the device also comprises an instruction input module, a central processing controller, a display module, a clock module and a storage module, wherein the instruction input module, the display module, the clock module and the storage module are respectively connected with the central processing controller; a filter plate or a filter brick is arranged in the denitrification preparation area.
(III) advantageous effects
The above technical scheme of the utility model has following advantage:
(1) the utility model provides a municipal administration sewage advanced treatment system includes biological denitrification filtering pond and biological filter bed, biological denitrification filtering pond has set gradually denitrification preparation district from bottom to top, first modification biofilm carrier district and denitrification play water zone, biological filter bed top-down has set gradually biological filter bed preparation district, the modified biofilm carrier district of second and filter brick district, denitrification play water zone and biological filter bed preparation district pass through drop aeration unit intercommunication, setting through drop aeration unit, the drop aeration can be carried out to the coming water, combine the setting through two modified biofilm carrier districts, water treatment effect has obtained very big promotion.
Specifically, after the sewage and sewage supply tank is lifted to the denitrification preparation area, sewage uniformly flows into the first modified biological filler area, is purified for the first time in the first modified biological filler area and then flows to the denitrification water outlet area, water in the denitrification water outlet area flows to the biological filter bed through the drop aeration unit, and the oxygen content in the water is improved after the sewage undergoes two drop processes in the drop aeration unit; the water in the biological filter bed preparation area flows to the second modified biological filler area through the third water drop, the height of the third water drop is larger than that of the first two water drops, so that the oxygen content in the water is greatly improved, and the microorganisms in the second modified biological filler area further purify the sewage by using the oxygen in the water, so that the purification effect of the water is greatly improved.
(2) The utility model discloses the surface of the biofilm carrier granule in well first modified biofilm carrier district and the second modified biofilm carrier district is multipolarity surface treatment layer, such processing makes the molecule/atom on filler surface have a large amount of charges, a large amount of charges can adsorb the pollutant in the aquatic, can make filler surface simultaneously, inside forms a large amount of holes of different sizes, a large amount of holes can provide good environment for the growth of microorganism, the mass propagation of microorganism is favorable to the organic matter and the inorganic matter of fully consuming aquatic. Based on it can adsorb aquatic pollutant, provides good growing environment for the microorganism simultaneously, can impel the efficiency that the microorganism consumed aquatic pollution to improve greatly, the biochemical reaction that originally needs long time to accomplish can accomplish in short time. Therefore, the modified filler plays a role similar to a catalyst, and finally the biological denitrification filter can fully utilize residual COD in water as a carbon source to remove nitrogen in water, so that the amount of an external carbon source is reduced; and the hardness of the modified filler is greatly enhanced, so that the service life is prolonged.
The biological filler particle diameter in the first modification biological filler district is 5 ~ 8mm, the great biological filler particle of diameter is chooseed for use in this region, the porosity is also bigger when the granule surface adhesion area is big, when the biological denitrification filtering pond carries out the backwash, choose for use the great microorganism filler particle of diameter to guarantee that the biological denitrification filtering pond is in reasonable operation cycle operation, avoid excessive backwash to cause the loss of microorganism, ensure that the efficiency of denitrification can not receive very big influence, the stability of system operation also can be guaranteed simultaneously.
The diameter of biological filler particles in the second modified biological filler zone is 1-5 mm, the specific surface area of the biological filler particles with the diameter of 1-5 mm is larger, water flows out from the denitrification water outlet zone, the oxygen content in the water is enabled to be more than 4 mg/L (under the condition of water temperature of 25 ℃) after three times of water dropping, the two aspects are combined, the microorganisms in the second modified biological filler zone can fully utilize the oxygen in the water to further fully consume COD, ammonia nitrogen and the like in the water, and the quality of the outlet water is fully ensured after two times of purification.
(3) The equipment adopted in the utility model is simple equipment without large, complex or imported equipment, and the full-automatic operation reduces the labor cost, thereby reducing the investment cost and the operation cost; the utility model discloses in do not have complicated fragile instrument and equipment, also do not have complicated connected mode for this system operation is reliable and stable.
Drawings
FIG. 1 is a schematic structural view of the municipal sewage advanced treatment system of the utility model;
FIG. 2 is a schematic view of the first water dropping structure of the water dropping aeration unit in the municipal sewage advanced treatment system of the utility model;
FIG. 3 is a schematic diagram of a second water dropping structure of a water dropping aeration unit in the municipal sewage advanced treatment system of the utility model;
FIG. 4 is a schematic diagram of a third water dropping structure of the water dropping aeration unit in the municipal sewage advanced treatment system of the utility model;
FIG. 5 is a schematic view of the control principle of the control device in the municipal sewage advanced treatment system of the present invention;
FIG. 6 is a top view of the first drop in the municipal sewage advanced treatment system of the present invention;
FIG. 7 is the second drop and the third drop plan view in the municipal sewage advanced treatment system.
In the figure: 1. a sewage supply tank; 2. a water inlet pump; 3. a biological denitrification filter; 4. a denitrification preparation zone; 5. a first modified biological filler zone; 6. a denitrification water outlet zone; 7. filtering the plate; 8. a biological filter bed; 9. a biological filter bed preparation area; 10. a second modified biological filler zone; 11. a filter block area; 12. backwashing the drain valve; 13. a reservoir; 14. an effluent weir; 15. a first water distribution weir; 16. a second water distribution weir; 17. a central control processor; 18. an instruction input module; 19. a display module; 20. a clock module; 21. a storage module; 22. an overflow channel; 23. a water distribution channel; 24. a drop pool; 25. Backwashing the drainage pool; 26. the effluent weir falls the pond.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-7, the utility model provides a municipal wastewater advanced treatment system, which comprises a biological denitrification filter 3 and a biological filter bed 8, wherein the biological denitrification filter 3 is provided with a denitrification preparation area 4, a first modified biological filler area 5 and a denitrification water outlet area 6 from bottom to top in sequence, the denitrification preparation area 4 provides wastewater for the first modified biological filler area 5, and the wastewater flows to the denitrification water outlet area 6 after being purified for the first time by the first modified biological filler area 5; the biological filter bed 8 is sequentially provided with a biological filter bed preparation area 9, a second modified biological filler area 10 and a filter brick area 11 from top to bottom, the biological filter bed preparation area 9 receives the incoming water from the denitrification water outlet area 6, the incoming water flows into the second modified biological filler area 10 again, the sewage is purified again in the second modified biological filler area 10, and the purified water is finally collected by the filter brick area 11; the denitrification water outlet zone 6 is communicated with the biological filter bed preparation zone 9 through a drop aeration unit, and the oxygen content of the sewage in the water is greatly improved in the drop flowing process of the drop aeration unit, so that the purification effect of the sewage in the second modified biological filler zone 10 is improved.
In the above embodiment, the sewage in the denitrification preparation area 4 uniformly enters the first modified biological filler area 5, a large amount of microorganisms in the first modified biological filler area can fully react with pollutants in the water, so that the sewage is purified for the first time, the water after the first purification flows to the denitrification water outlet area 6, the biological filter bed preparation area 9 receives the incoming water from the denitrification water outlet area 6, in the process, the oxygen content in the water is greatly increased after the sewage passes through the two water drops in the water drop aeration unit, meanwhile, after the sewage passes through the third water drop in the biological filter bed preparation area 9, the oxygen content in the water is further increased, and the microorganisms in the second modified biological filler area can fully utilize the oxygen in the water to digest the pollutants.
Specifically, the water drop aeration unit comprises an effluent weir 14, a flowing water channel and a first water distribution weir 15, wherein the effluent weir 14 and the first water distribution weir 15 are arranged on the flowing water channel, the effluent weir 14 is communicated with the first water distribution weir 15 through the flowing water channel, the effluent weir 14 is positioned on the outer wall of the denitrification effluent area 6 and is integrally formed with the denitrification effluent area 6, and the first water distribution weir 15 is arranged on the outer wall of the biological filter bed preparation area 9 and is integrally formed with the biological filter bed preparation area 9; the denitrification water outlet area 6 is communicated with the biological filter bed preparation area 9 through a water flowing channel. The effluent weir 14 comprises an effluent weir pool and an effluent weir dam arranged in the effluent weir pool, the effluent weir dam divides the effluent weir pool into a backwashing drainage pool 25 and an effluent weir water drop pool 26, when water overflows from the denitrification effluent area 6 and the backwashing drainage pool 25, the water is subjected to first water drop through the effluent weir dam to increase the oxygen content in the water,
the air lock is easily formed in the deep bed denitrification filter, and in order to prevent the biological denitrification filter 3 from being blocked, the height of the water outlet weir dam is higher than the height of the water outlet of the denitrification water outlet area 6, the backwashing water discharge tank 25 is provided with a backwashing water discharge valve 12 at the bottom, and the biological denitrification filter 3 is cleaned by injecting water into the backwashing water discharge valve 12, so that the blockage of the biological denitrification filter 3 is avoided.
Specifically, the first distribution weir 15 includes a distribution weir pool and a first distribution weir dam in the distribution weir pool, the first distribution weir dam divides the distribution weir pool into a distribution channel 23 and a drop pool 24, as shown in fig. 3, the height of the first distribution weir dam is higher than the height of the water inlet of the biological filter bed preparation area 9, water flows to the distribution channel 23 through the flow channel after first drop, and when water in the distribution channel 23 overflows, water drops for the second time through the first distribution weir dam.
The inner wall of the biological filter bed preparation area 9 is provided with a second water distribution weir 16, the wall of the biological filter bed preparation area 9 is provided with an overflowing channel 22, the water drop pool 24 is communicated with the second water distribution weir 16 through the overflowing channel 22, water in the water drop pool 24 flows to the second water distribution weir 16 through the overflowing channel 22, the wall of the second water distribution weir 16 is provided with a second water distribution weir, when the water in the second water distribution weir 16 overflows, the water flows to the second modified biological filler area 10 through the second water distribution weir for the third time of water drop, the height difference of the third time of water drop is the largest compared with the first two times of water drop, the design is beneficial to the reaction of microorganisms and pollutants in the second modified biological filler area, the three times of water drop process can enable dissolved oxygen in the water to be maintained above 4 mg/L (under the condition of water temperature of 25 ℃), so that the aeration cost is reduced, the flow is simplified, and the dual functions of water drop and biological filler fully ensure the quality of water outlet.
Specifically, the surfaces of the biological fillers in the first modified biological filler area 5 and the second modified biological filler area 10 are multi-polar surface treatment layers, and the fillers in the first modified biological filler area 5 are subjected to surface modification treatment, so that the hardness of the fillers is greatly enhanced, the service life of the fillers is prolonged, and molecules/atoms on the surfaces are provided with a large amount of charges, so that pollutants in sewage can be adsorbed in a large amount; when the surface of the filler is modified, various gaps with different sizes are formed on the surface and inside of the filler, and a large number of gaps provide a good environment for the growth of microorganisms. Based on it can adsorb aquatic pollutant, provides good growing environment for the microorganism simultaneously, can impel the efficiency that the microorganism consumed aquatic pollution to improve greatly, the biochemical reaction that originally needs long time to accomplish can accomplish in short time. Therefore, the modified filler plays a role similar to a catalyst, and finally, the biological denitrification filter can fully utilize residual COD in water as a carbon source to remove nitrogen in water, so that the amount of an external carbon source is reduced. On the basis of the actually established experimental project, even no external carbon source is added, the excellent denitrification effect is still realized.
Aiming at the setting position and the reaction characteristic of the biological denitrification filter 3, the filler with the particle diameter of 5-8 mm is selected in a targeted manner, the particles with larger diameters can enable the attachment area of microorganisms to be large, meanwhile, the porosity is larger, when repeated backwashing is carried out, the filler with the diameter range is selected to ensure that the biological denitrification filter 3 runs in a reasonable running period, the microorganism loss caused by excessive backwashing is avoided, and therefore the reaction efficiency is influenced, and after the modified filler is used, the total phosphorus in water can be removed under the condition that a phosphorus removal agent is not added.
According to the characteristics of the combined process, a drop aeration mode is developed, and can enable dissolved oxygen in water to be maintained above 4 mg/L (at the temperature of 25 ℃) without an external aeration device, so that the microorganisms in the second modified biological filler zone 10 can reduce COD (chemical oxygen demand) and ammonia nitrogen by utilizing the dissolved oxygen in the water, and in addition, according to the reaction characteristics of the biological filter bed 8, the diameter of filler particles in the second modified biological filler zone 10 is 1-5 mm, the specific surface area of the filler particles with the diameter of 1-5 mm is larger, the microorganisms can contact pollutants in a larger area, and after three drops, the microorganisms can more effectively utilize oxygen in the water to fully react with the pollutants, so that the purification efficiency and the quality of discharged water are further ensured.
Specifically, the utility model also comprises a sewage supply pool 1 and a reservoir 13, the denitrification preparation area 4 is communicated with the sewage supply pool 1, a water inlet pump 2 is arranged between the denitrification preparation area 4 and the sewage supply pool 1, the water inlet pump 2 is connected with a central control processor 17 for controlling the water inlet amount, and the water inlet pump 2 continuously lifts the sewage in the sewage supply pool 1 into the denitrification preparation area 4; the filter brick area 11 is communicated with the reservoir 13, the water purified by the second modified biological filler area 10 is collected by the filter brick area, finally the water flows to the reservoir 13 from the filter brick area, and the arrangement of the water inlet pump 2 ensures the efficiency of sewage treatment to a great extent.
Specifically, the utility model discloses still include instruction input module 18 among the municipal administration sewage advanced treatment system, central processing unit 17, display module 19, clock module 20 and storage module 21, instruction input module 18, display module 19, clock module 20 and storage module 21 all are connected with central processing unit 17, central control unit 17 is connected with intake pump 2, carry out instruction input through instruction input module 18, look over the system running state in time through display module 19, in order to carry out real-time record to the system through clock module 20, with storage system operating data through storage module 21, adopt central control unit 17 can coordinate and effectual promotion sewage treatment's going on.
Specifically, be provided with filter plate 7 between denitrification preparation area 4 and the first modified biofilm carrier district 5, sewage passes through even entering into the first modified biofilm carrier district 5 of water distribution effect of filter plate 7 for sewage treatment work is steady goes on, also can guarantee to a certain extent that sewage treatment is abundant, and this filter plate 7 also can be replaced with the filter brick.
In order to further understand the treatment system, the utility model provides a method for advanced treatment of municipal sewage, which comprises the following steps:
s1: lifting the sewage from the sewage supply tank to a denitrification preparation area through a water inlet pump;
s2: the sewage uniformly enters a first modified biological filler area in a denitrification preparation area under the action of water distribution of a filter plate;
s3: enabling the sewage to be purified for the first time through the first modified biological filler area and flow to the denitrification water outlet area, and when water in the denitrification water outlet area and the backwashing water drainage tank overflows, performing first water drop through the water outlet weir dam;
s4: the water after the first water drop continues to flow to the first water distribution weir, and when the water in the water distribution channel overflows, the water drops for the second time through the first water distribution weir dam and flows to the water drop pool;
s5: after the second water drop, the sewage flows to a second water distribution weir arranged on the inner wall of the biological filter bed preparation area through the overflowing channel, and when the water overflows from the second water distribution weir, the third water drop is carried out through a second water distribution weir dam of the second water distribution weir so as to improve the concentration of dissolved oxygen in the incoming water;
s6: after the third water drop, the sewage is purified again through the biological filler particles in the second modified biological filler area, and then flows out of the second modified biological filler area and is collected by the filter brick area.
The following examples are the actual procedure of the project in Xinjiang by the Applicant, with a daily throughput of 12000m3The method specifically comprises the following steps:
step a), the effluent of the upstream secondary sedimentation tank enters an outer pipeline of the biological denitrification filter tank through lifting;
step b), water in an outer pipeline of the biological denitrification filter uniformly enters a denitrification preparation area at the bottom of the four-grid biological denitrification filter;
step c), the water entering the denitrification preparation area uniformly enters a filling area (a first modified biological filling area in the application) through a filter plate, the filling height of the filling area is 2-3.5 m, and the full reaction of pollutants and microorganisms can be ensured;
d) finally leading the effluent of the filling zone to flow to a denitrification effluent zone, and leading the water in the denitrification effluent zone to flow to the biological filter bed in a water drop mode (the first water drop in the application);
step e) the water inlet distribution weir (the first distribution weir in the application) of the biological filter bed carries out drop water distribution on the incoming water again, and the concentration of dissolved oxygen in the incoming water is further improved;
step f), uniformly entering a preparation area of 4-grid biological filter beds after water drop and water distribution (in the actual treatment, four biological filter beds are arranged for improving the efficiency, and the biological filter beds are single grids in the application);
step g), water entering a preparation area of the single-lattice biological filter bed falls into a filler area for the third time through a water distribution weir (a second water distribution weir in the application) of the water entering the preparation area of the single-lattice biological filter bed, and finally pollutants in the water are further removed through the filler in the filler area;
and h) collecting the effluent of the filling area through a filter brick area, and discharging the effluent out of the system.
In this embodiment, all the devices are domestic devices. The project is a full-automatic operation system, and an external carbon source adding system and a phosphorus removal agent adding system are designed in a matching way. However, in the formal operation of the project, the two sets of systems are not started.
In this embodiment, the test method adopted is:
turbidity: on-line turbidimeter
Total phosphorus: national standard law
Total nitrogen: national standard law
Ammonia nitrogen: national standard law
COD: hash instrumentation and national standards. And comparing the national standard with a Hash instrument in the early stage, and analyzing by using the Hash instrument after finding out the correlation.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a municipal administration sewage advanced treatment system which characterized in that: the biological denitrification filter comprises a biological denitrification filter (3) and a biological filter bed (8), wherein the biological denitrification filter (3) comprises a denitrification preparation area (4), a first modified biological filler area (5) and a denitrification water outlet area (6), and the denitrification preparation area (4), the first modified biological filler area (5) and the denitrification water outlet area (6) are sequentially arranged from bottom to top; the biological filter bed (8) comprises a biological filter bed preparation area (9), a second modified biological filler area (10) and a filter brick area (11), the biological filter bed preparation area (9), the second modified biological filler area (10) and the filter brick area (11) are sequentially arranged from top to bottom, and the denitrification water outlet area (6) is communicated with the biological filter bed preparation area (9) through a drop aeration unit.
2. The municipal sewage advanced treatment system of claim 1, wherein: the water drop aeration unit comprises a water outlet weir (14) and a water flowing channel, the denitrification water outlet area (6) is communicated with the biological filter bed preparation area (9) through the water flowing channel, and the water outlet weir (14) is arranged on the water flowing channel.
3. The municipal sewage advanced treatment system of claim 2, wherein: the drop aeration unit further comprises a first water distribution weir (15), wherein the water outlet weir (14) is positioned on the outer wall of the denitrification water outlet area and integrally formed with the denitrification water outlet area (6), the first water distribution weir (15) is arranged on the outer wall of the biological filter bed preparation area (9) and integrally formed with the biological filter bed preparation area (9), and the first water distribution weir (15) and the water outlet weir (14) are communicated through the water flowing channel.
4. The municipal sewage advanced treatment system of claim 2, wherein: the water outlet weir (14) comprises a water outlet weir pool and a water outlet weir dam arranged in the water outlet weir pool, the water outlet weir dam divides the water outlet weir pool into a backwashing drainage pool (25) and a water outlet weir drop pool (26), and incoming water is subjected to primary water drop through the water outlet weir dam; and a backwashing drainage valve (12) is arranged at the bottom of the backwashing drainage pool (25), and the height of the water outlet weir dam is higher than that of the water outlet position of the denitrification water outlet area (6).
5. The municipal sewage advanced treatment system of claim 3, wherein: first distribution weir (15) including join in marriage the weir pond with first distribution weir dam in the distribution weir pond, first distribution weir dam will join in marriage the weir pond and separate for distribution channel (23) and drop pond (24), water in distribution channel (23) carries out the secondary drop through first distribution weir dam, and first distribution weir dam highly is higher than the height of biological filter bed preparation area (9) department of intaking.
6. The municipal sewage advanced treatment system of claim 5, wherein: a second water distribution weir (16) is arranged on the inner wall of the biological filter bed preparation area (9), an overflowing channel (22) is formed in the wall of the biological filter bed preparation area (9), the water drop pool (24) is communicated with the second water distribution weir (16) through the overflowing channel (22), and water in the water drop pool (24) flows to the second water distribution weir (16) through the overflowing channel (22); the weir wall of the second water distribution weir (16) is provided with a second water distribution weir, and the water of the second water distribution weir (16) flows to the second modified biological filler region (10) through the second water distribution weir for the third water drop.
7. The municipal sewage advanced treatment system according to any one of claims 1 to 6, wherein: the surfaces of the biological filler particles in the first modified biological filler area (5) and the second modified biological filler area (10) are multi-polar surface treatment layers; the diameter of the biological filler particles in the first modified biological filler area (5) is 5-8 mm, and the diameter of the biological filler particles in the second modified biological filler area (10) is 1-5 mm.
8. The municipal sewage advanced treatment system of claim 1, wherein: the device is characterized by also comprising a sewage supply pool (1) and a water storage pool (13), wherein the denitrification preparation area (4) is communicated with the sewage supply pool (1), and a water inlet pump (2) is arranged between the denitrification preparation area (4) and the sewage supply pool (1); the filter block area (11) is communicated with the water storage tank (13).
9. The municipal sewage advanced treatment system of claim 1, wherein: the intelligent control system is characterized by further comprising an instruction input module (18), a central processing controller (17), a display module (19), a clock module (20) and a storage module (21), wherein the instruction input module (18), the display module (19), the clock module (20) and the storage module (21) are respectively connected with the central processing controller (17); a filter plate or a filter brick (7) is arranged in the denitrification preparation area (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110451645A (en) * | 2019-09-19 | 2019-11-15 | 境友环保科技（北京）有限公司 | A kind of municipal wastewater advanced treatment system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110451645A (en) * | 2019-09-19 | 2019-11-15 | 境友环保科技（北京）有限公司 | A kind of municipal wastewater advanced treatment system and method |
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