CN210457824U - Lifting baffling type enhanced denitrification and denitrification composite filter - Google Patents
Lifting baffling type enhanced denitrification and denitrification composite filter Download PDFInfo
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- CN210457824U CN210457824U CN201920710248.5U CN201920710248U CN210457824U CN 210457824 U CN210457824 U CN 210457824U CN 201920710248 U CN201920710248 U CN 201920710248U CN 210457824 U CN210457824 U CN 210457824U
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Abstract
The utility model provides a lifting baffling type enhanced denitrification and denitrification composite filter, which comprises two or more groups of subunits, wherein each subunit comprises a denitrification main zone, a facultative reaction zone and a fine filtration zone; the facultative reaction zone is arranged outside the denitrification main zone, and the fine filtering zone is arranged outside the facultative reaction zone; a lower overflowing hole is arranged at the lower position of the wall part between the facultative reaction zone and the denitrification main zone; an upper overflowing hole is arranged at the upper position of the wall part between the fine filtering area and the facultative reaction area; the filter tank also comprises a water inlet component arranged at the top of the denitrification main zone and a water outlet component arranged at the bottom of the fine filtering zone; wherein the filter chamber is also internally provided with a filter material and a pebble supporting layer positioned at the lower part of the filter material; and a support filter layer is arranged below the pebble bearing layer, and is a filter brick or a support filter plate embedded with a filter head water distribution piece. The filter tank gives consideration to the characteristics of space mixing and plug flow type double flow state, and can ensure high-efficiency denitrification rate.
Description
Technical Field
The utility model relates to a sewage treatment field, in particular to a combined filter of denitrification denitrogenation is reinforceed to lift baffling formula.
Background
In the field of sewage treatment in the prior art, municipal sewage or industrial wastewater often faces the difficult problem of reaching TN (total nitrogen), and in the existing biochemical secondary denitrification technology or denitrification filter for advanced treatment, especially when an external carbon source is added for denitrification, COD (Chemical Oxygen Demand)/SS (Suspended Solids) multi-index stable reaching of high-efficiency denitrification rate and effluent TN/COD (Chemical Oxygen Demand)/SS (Suspended Solids) is difficult to guarantee due to the fact that a quantitative carbon source cannot be refined and COD penetration exceeds the standard or SS penetration exceeds the standard due to the fact that a filter material biological membrane falls off. In addition, the operation of the biological filters is complex, the energy consumption and the medicine consumption are high, the cooperativity is poor, and the stable standard reaching of the effluent is difficult to ensure.
SUMMERY OF THE UTILITY MODEL
In order to solve or alleviate the problem that the denitrogenation filtering pond among the prior art is difficult to guarantee efficient denitrogenation efficiency and the many stable indexes of play water, the utility model provides a denitrification denitrogenation composite filter is reinforceed to lift baffling formula.
In order to achieve the above purpose, the utility model adopts the following scheme:
the composite filter tank of some embodiments of the present invention comprises two or more groups of sub-units, wherein each sub-unit comprises a denitrification main zone, a facultative reaction zone and a fine filtration zone; the facultative reaction zone is arranged outside the denitrification main zone, and the fine filtering zone is arranged outside the facultative reaction zone; a lower overflowing hole for overflowing is arranged at a lower position of a wall part between the facultative reaction zone and the denitrification main zone; an upper overflowing hole for overflowing is arranged at the upper position of the wall part between the fine filtering area and the facultative reaction area; the filter tank also comprises a water inlet component arranged at the top of the denitrification main zone and a water outlet component arranged at the bottom of the fine filtering zone, wherein filter materials and a pebble supporting layer positioned at the lower part of the filter materials are distributed in the denitrification main zone, the facultative reaction zone and the fine filtering zone; and a support filter layer is arranged below the pebble bearing layer, and is a filter brick or a support filter plate embedded with a filter head water distribution piece.
In some embodiments of the present invention, the filtering material of the denitrification main zone is one or more of ceramsite, polystyrene filtering material and sulfur-containing filtering material; the filter material of the facultative reaction zone is one or more of ceramsite and polystyrene filter material; the filter material of the fine filtering area is one or more of silica sand, quartz sand and volcanic rock.
In some embodiments of the present invention, the filter chamber is further provided with a gas supply unit, including: the air pipe is arranged in the filter tank in a penetrating way; and gas distribution branch pipes which respectively extend to the denitrification main zone, the facultative reaction zone and the fine filtering zone are respectively connected from the air pipeline. The air distribution branch pipes are arranged on the upper portion of the supporting and filtering layer and at the bottom of the filtering material, and the air pipeline is further provided with a connected pressure relief pipeline.
In some embodiments of the present invention, the filter chamber is further provided with a backwash water intake part, including: the backwashing water pump and the backwashing water inlet pipeline extend out of the backwashing water pump; and the backwashing water inlet branch pipe extends to the bottoms of the denitrification main zone, the facultative reaction zone and the fine filtering zone from the backwashing water inlet pipeline. And a backwashing water inlet main valve is arranged on the backwashing water inlet pipeline, and a backwashing water inlet branch valve is arranged on the backwashing water inlet branch pipe.
In some embodiments of the present invention, the filter tank is further provided with a backwashing water discharging component located at an upper portion of the filter tank, the backwashing water discharging component comprises a backwashing water discharging pipeline penetrating through the denitrification main zone, the facultative reaction zone and the fine filtration zone, and a valve is arranged on the backwashing water discharging pipeline.
The utility model discloses some embodiments, the part of intaking include certainly the filtering pond outside extends to water intake pipe on denitrification main district upper portion with be located water distribution device at the end of water intake pipe, be provided with the valve on the water intake pipe.
In some embodiments of the present invention, the water outlet component includes a water outlet pipe extending from the bottom of the fine filtering area to the outside of the filter tank, and the water outlet pipe is provided with a valve.
The utility model discloses some embodiments, the filtering pond still is provided with the unloading part, include and wear to establish the drain pipe of the bottom of denitrification main zone, facultative reaction district and smart filtering area, drain pipe certainly the inside extension in filtering pond reaches the outside in filtering pond, still be provided with the valve on the drain pipe.
The utility model discloses some embodiments, the filtering pond still is provided with outer carbon source and adds medicine part, outer carbon source adds medicine part setting and is in the upper portion of denitrification main district or with the part of intaking is connected.
The utility model discloses a hierarchical compound filtering pond of lift baffling formula, the beneficial effect that can obtain includes at least:
the filter tank is provided with a three-stage composite filter bed system of a denitrification main zone, a facultative reaction zone and a fine filtering zone and is provided with filter materials with different performances so as to play the overlapping function of different reaction mechanisms such as biochemistry and materialization and ensure the high-efficiency denitrification rate and the stable standard reaching of the multiple indexes of the effluent TN/COD/SS.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:
fig. 1 is a schematic structural diagram of a filter according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the gas supply unit according to an embodiment of the present invention;
fig. 3 is a schematic diagram showing the composition of a backwash drainage member according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of the vent unit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.
In order to solve or alleviate the problem that the denitrogenation filtering pond among the prior art is difficult to guarantee efficient denitrogenation efficiency and the many stable indexes of play water, the utility model provides a denitrification denitrogenation composite filter is reinforceed to lift baffling formula.
Fig. 1 is a schematic structural diagram of a filter according to an embodiment of the present invention, as shown in fig. 1, in some embodiments, the composite filter of the present invention includes two or more groups of sub-units.
In some embodiments of the present invention, the single denitrification main zone 1, the facultative reaction zone 2 and the fine filtration zone 3 form a tank body series, i.e. a subunit, and the tank body may include more than two sets of subunits. As shown in fig. 1, the filter comprises two sets of cell bodies. Multiple filter body series are arranged, and when a single series is backwashed, the continuous water passing function of the filter is still ensured.
Each subunit comprises a denitrification main zone 1, a facultative reaction zone 2 and a fine filtration zone 3. The filter also comprises a water inlet component 5 arranged at the top of the denitrification main zone 1 and a water outlet component arranged at the bottom of the fine filtering zone 3. Wherein the facultative reaction zone 2 is arranged outside the denitrification main zone 1, and the fine filtration zone 3 is arranged outside the facultative reaction zone 2.
In some embodiments of the present invention, a lower overflowing hole 451 for overflowing is provided at a lower position of the wall portion between the facultative reaction zone 2 and the denitrification main zone 1; an upper overflowing hole 452 for overflowing is provided at a position above the wall between the fine filtering section 3 and the facultative reaction section 2.
According to the staged composite filter tank of the embodiment of the present invention, the water to be treated flows down from the upper part of the denitrification main zone 1 to the bottom from the water inlet part 5, and flows through the lower overflowing hole 451 on the same wall to the facultative reaction zone 2; the bottom in the facultative reaction zone 2 rises to the upper part and flows to the fine filtering zone 3 through the upper overflowing hole 452 of the common wall; and is discharged at the bottom in the fine filtering zone 3. The utility model discloses a hierarchical compound filtering pond has compromise the hybrid in space and has pushed away the two fluid state characteristics of STREAMING through the hydraulic power flow state that the tertiary lift in turn.
In the embodiment, the denitrification main zone 1 and the fine filtering zone 3 both adopt a down-flow type overflowing mode, the filtering material system can better play multiple functions of biological reaction and physical filtering interception, when the suspended matters of the instant water are higher, the air-water combined backwashing can better perform backwashing on the dirt intercepted on the surface layer of the filtering material, and the biological and filtering performances of the system can be quickly recovered; the facultative reaction zone 2 can further strengthen the removal of organic matters, reducing substances and the like, and avoid the risk of effluent exceeding the standard caused by the rebound of pollutants such as effluent COD (chemical oxygen demand) and the like due to excessive addition of external carbon sources.
In some embodiments of the present invention, the water inlet unit 5 includes a water inlet pipe 51 extending from the outside of the filter tank to the upper portion of the denitrification main zone 1 and a water distribution device 53 located at the end of the water inlet pipe 51, the water inlet pipe 51 is provided with a valve, and the valve can be a main water inlet valve 52 or a water inlet valve 521. In the embodiment of FIG. 1, the water inlet line 51 is branched into two branches, each branch corresponding to the top of two series of the denitrification main zone 1.
In some embodiments of the present invention, the water outlet member 6 comprises a water outlet pipe 61 extending from the bottom of the fine filtering area 3 to the outside of the filter, and the water outlet pipe is provided with a valve. The valve can be a water outlet main valve 62 or a water outlet water valve 621. In the embodiment of fig. 1, the outlet conduit 61 branches into two branches, corresponding to the bottoms of the two series of fine filtering sections 3.
In the utility model discloses some embodiments, still lay filter material (41/42/43), and be located in the inside of denitrification main zone 1, facultative reaction district 2 and smart filtering district 3 the cobble supporting layer and the support filter layer of filter material lower part. The supporting filter layer can adopt filter bricks with water distribution structures or supporting filter plates with filter head water distribution pieces embedded inside, and when the filter bricks are adopted, the filter head water distribution pieces are omitted. The pebble supporting layer is used for intercepting large-particle impurities such as suspended substance colloid and the like in water besides the supporting function, thereby playing a role in filtering. The support filter layer plays the dual functions of bearing the filter material layer for filtering and back flushing for water (gas) distribution in the filter. The position of the pebble supporting layer and the support and filtration layer may be as shown at 44 in figure 1, located approximately immediately below the filter chamber.
In some embodiments of the present invention, the filter material 41 of the denitrification main zone 1 may be one or more of a ceramsite, a polystyrene filter material, and a sulfur-containing filter material; the filter material 43 in the facultative reaction zone 2 can be one or more of ceramsite and polystyrene filter material; the filtering material 43 in the fine filtering area 3 may be one or more of silica sand, quartz sand and volcanic rock. According to different reactions in different regions, filter materials with different performances are preferably adopted to exert the overlapping function of different reaction mechanisms such as biochemistry, materialization and the like, and also to strengthen the denitrification effect and ensure the stability of multiple indexes of the effluent TN/COD/SS to reach the standard.
The denitrification main zone 1 can also be called as a denitrification reaction zone, and is used as a denitrification main reaction zone, a certain volume of filter material 41 is filled in the denitrification main reaction zone, and the filter material 41 can adopt filter materials with certain technical specifications such as ceramsite, polystyrene and the like or filter materials containing sulfur (such as sulfur, pyrite, sulfur and limestone, sulfur and zeolite, and sulfur-carbon composite granules). The facultative reaction zone 2 may also be referred to as a denitrification/nitrification facultative reaction zone, and serves as a facultative nitrification zone for secondary denitrification or enhanced aerobic removal of residual organic carbon sources and ammonia nitrogen. The area is filled with a certain volume of filter material 42, which can be ceramsite, polystyrene and other filter materials with certain technical specifications. The fine filtering area 3 is used as a suspended matter or turbidity fine filtering and removing area, and a certain volume of filter material 43 is filled in the fine filtering area, and can adopt filter materials such as silica sand, quartz sand, volcanic rock and the like. The grain sizes of the filter materials 41 and 42 can be selected to be 2-5 mm, and the height of the filter material layer is 1.0-2.5 m; the grain size of the filter material 43 can be 1.5-3 mm, and the height of the filter material layer is 0.5-2 m.
In some embodiments of the present invention, the filter chamber is further provided with a gas supply component 7, and the gas supply component 7 can be disposed between the support filter layer and the filter material, so as to take aeration and gas washing functions into account, and perform a good denitrification nitrogen-expelling and gas-releasing function. As shown in fig. 1 and 2, the air supply unit 7 includes a blower 71, an air pipe 72 extending from the blower 71 to the inside of the filter, and an air distribution pipe 75 extending from the air pipe 72 to the denitrification main zone 1, the facultative reaction zone 2 and the fine filtration zone 3, respectively. Wherein, the air pipeline 72 is provided with an air main valve 73, each air distribution branch pipe 75 is provided with an air branch valve (731/732/733), and the air distribution branch pipes 75 are arranged at the upper part of the support filter layer and the bottom of the filter material (41/42/43). An outlet relief line 74 is also provided in the air line 72. The air supply part 7 is used for aeration oxygenation or air washing and also has the function of denitrification nitrogen-driving air release of the filter. The air main valve 73 and the air branch valve are convenient for controlling air supply of each area, and the pressure relief pipeline 74 plays a role in pressure relief and equipment protection.
In some embodiments of the present invention, the filter chamber is further provided with a backwash water inlet unit 8, which comprises a backwash water pump 81 and a backwash water inlet pipe 82 extending from the backwash water pump 81, and a backwash water inlet branch pipe extending to the bottom of the denitrification main zone 1, the facultative reaction zone 2 and the fine filtration zone 3 is connected from the backwash water inlet pipe 82. Wherein, a backwash water inlet main valve 83 is arranged on the backwash water inlet pipeline 82, and a backwash water inlet branch valve (831/832/833) is arranged on the backwash water inlet branch pipe. As shown in FIG. 1, for example, the backwash water inlet manifold provided with the backwash water inlet valve 831 corresponds to the bottom of the denitrification main zone 1, the backwash water inlet manifold provided with the backwash water inlet valve 832 corresponds to the bottom of the facultative reaction zone 2, and the backwash water inlet manifold provided with the backwash water inlet valve 833 corresponds to the bottom of the fine filtration zone 3. Valves are arranged on the backwashing water inlet pipeline 82 and the backwashing water inlet branch pipe, so that the backwashing water supply state and the water quantity of each region can be conveniently regulated and controlled. In specific implementation, because the bottom of the fine filtering area 3 is provided with the water outlet pipeline 61, a backwashing water inlet branch pipe provided with a backwashing water inlet branch valve 833 can be connected to the water outlet pipeline 61, so that the number of water gaps at the bottom of the filter tank is reduced.
In some embodiments of the present invention, as shown in fig. 1 and 3, the filter is further provided with a backwash water discharge part 11 located at the upper part of the filter, including backwash water discharge pipes penetrating the denitrification main zone 1, the facultative reaction zone 2 and the fine filtration zone 3, and valves (a/b/c) are provided on the backwash water discharge pipes so as to discharge backwash water of each zone.
In some embodiments of the present invention, as shown in fig. 1, the filter tank may further be provided with a vent unit 9, including a vent pipe passing through the bottom of the denitrification main zone 1, the facultative reaction zone 2 and the fine filtration zone 3, the vent pipe extends from the inside of the filter tank to the outside of the filter tank, the vent pipe in each zone is further provided with a valve for rapidly venting the sewage to be treated in each zone in the filter tank in case of emergency.
In some embodiments of the present invention, as shown in fig. 1, the filter chamber is further provided with an external carbon source dosing part 10, the external carbon source dosing part 10 is disposed on the upper portion of the denitrification main zone 1 or connected to the water inlet part 5. The external carbon source dosing part 10 can adopt an organic carbon source or a sulfur-containing autotrophic electron donor to realize the heterotrophic/sulfur-autotrophic denitrification nitrogen removal function.
According to the utility model discloses a hierarchical compound filtering pond, the beneficial effect that can obtain at least includes:
1) the filter tank takes the characteristics of space mixing and plug flow type double flow states into consideration through three-level alternate lifting hydraulic flow states.
2) The filter can realize the heterotrophic/sulfur autotrophic enhanced denitrification function through an organic carbon source or a sulfur-containing autotrophic electron donor.
3) The filter is provided with a three-stage composite filter bed system of a denitrification main zone, a facultative reaction zone and a fine filtering zone and is provided with filter materials with different performances so as to play the overlapping function of different reaction mechanisms such as biochemistry, materialization and the like.
4) The denitrification main zone and the fine filtering zone both adopt a down-flow type overflowing mode, the filter material system can well play multiple functions of biological reaction and physical filtering interception, when the suspended matters in the incoming water are higher, backwashing can be better performed on the dirt intercepted on the surface layer of the filter material through air-water combined backwashing, and the biological and filtering performances of the system can be quickly recovered; the facultative reaction zone can further strengthen the removal of organic matters, reducing substances and the like, and avoids the risk of effluent exceeding the standard caused by the rebound of pollutants such as effluent COD (chemical oxygen demand) and the like due to excessive addition of external carbon sources.
5) The filter is internally provided with a gas supply component at the bottom of the filter material and at the upper part of the filter plate, thereby playing a good role in denitrification nitrogen removal and gas release or nitrification ammonia removal.
6) The filter can be provided with a plurality of filter body series, and when a single series is backwashed, the continuous water passing function of the filter is still ensured.
In the description herein, references to the description of the term "one embodiment," "a particular embodiment," "some embodiments," "for example," "an example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The sequence of steps involved in the embodiments is for illustrative purposes, and the sequence of steps is not limited and may be adjusted as desired.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A lifting baffling type enhanced denitrification and denitrification composite filter is characterized by comprising two or more groups of sub-units, wherein each sub-unit comprises a denitrification main zone, a facultative reaction zone and a fine filtration zone;
the facultative reaction zone is arranged outside the denitrification main zone, and the fine filtering zone is arranged outside the facultative reaction zone;
a lower overflowing hole for overflowing is arranged at a lower position of a wall part between the facultative reaction zone and the denitrification main zone;
an upper overflowing hole for overflowing is arranged at the upper position of the wall part between the fine filtering area and the facultative reaction area;
the filter tank also comprises a water inlet component arranged at the top of the denitrification main zone and a water outlet component arranged at the bottom of the fine filtering zone;
wherein, the denitrification main zone, the facultative reaction zone and the fine filtering zone are internally provided with a filter material and a pebble supporting layer positioned at the lower part of the filter material;
and a support filter layer is arranged below the pebble bearing layer, and is a filter brick or a support filter plate embedded with a filter head water distribution piece.
2. The composite filter tank of claim 1, wherein the filter material of the denitrification main zone is one of ceramsite, polystyrene filter material and sulfur-containing filter material;
the filter material in the facultative reaction zone is one of ceramsite and polystyrene filter material;
the filter material of the fine filtering area is one of silica sand, quartz sand and volcanic rock;
the filtering materials in the denitrification zone and the facultative reaction zone have the particle size of 2-5 mm and the height of the filtering material layer of 1.0-2.5 m; the grain size of the filter material in the fine filtering area can be 1.5-3 mm, and the height of the filter material layer is 0.5-2 m.
3. A composite filter according to claim 2, wherein the filter is further provided with a gas supply unit comprising:
the air pipe is arranged in the filter tank in a penetrating way;
gas distribution branch pipes which respectively extend to the denitrification main zone, the facultative reaction zone and the fine filtering zone are respectively connected from the air pipeline;
the air distribution branch pipes are arranged on the upper portion of the supporting and filtering layer and at the bottom of the filtering material, and the air pipeline is further provided with a connected pressure relief pipeline.
4. A composite filter according to claim 3, wherein the filter is further provided with a backwash water inlet member comprising:
the backwashing water pump and the backwashing water inlet pipeline extend out of the backwashing water pump;
a backwashing water inlet branch pipe which extends to the bottoms of the denitrification main zone, the facultative reaction zone and the fine filtration zone is connected from the backwashing water inlet pipeline;
and a backwashing water inlet main valve is arranged on the backwashing water inlet pipeline, and a backwashing water inlet branch valve is arranged on the backwashing water inlet branch pipe.
5. The composite filter according to claim 4, wherein the filter is further provided with a backwashing water discharge component positioned at the upper part of the filter, the backwashing water discharge component comprises backwashing water discharge pipelines which are arranged in the denitrification main zone, the facultative reaction zone and the fine filtration zone in a penetrating way, and valves are arranged on the backwashing water discharge pipelines.
6. The composite filter according to claim 1, wherein the water inlet component comprises a water inlet pipeline extending from the outside of the filter to the upper part of the main denitrification area and a water distribution device positioned at the tail end of the water inlet pipeline, and a valve is arranged on the water inlet pipeline.
7. The composite filter according to claim 1, wherein the water outlet component comprises a water outlet pipeline extending from the bottom of the fine filtering area to the outside of the filter, and a valve is arranged on the water outlet pipeline.
8. The composite filter according to claim 1,
the filter is also provided with an emptying component which comprises emptying pipelines arranged at the bottoms of the denitrification main zone, the facultative reaction zone and the fine filtration zone in a penetrating way, the emptying pipelines extend to the outside of the filter from the inside of the filter, and valves are also arranged on the emptying pipelines;
the filter is also provided with an outer carbon source dosing part, and the outer carbon source dosing part is arranged at the upper part of the denitrification main zone or is connected with the water inlet part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920710248.5U CN210457824U (en) | 2019-05-17 | 2019-05-17 | Lifting baffling type enhanced denitrification and denitrification composite filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920710248.5U CN210457824U (en) | 2019-05-17 | 2019-05-17 | Lifting baffling type enhanced denitrification and denitrification composite filter |
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| CN210457824U true CN210457824U (en) | 2020-05-05 |
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| CN201920710248.5U Active CN210457824U (en) | 2019-05-17 | 2019-05-17 | Lifting baffling type enhanced denitrification and denitrification composite filter |
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| CN (1) | CN210457824U (en) |
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