CN218435231U - Denitrification reaction device - Google Patents
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- CN218435231U CN218435231U CN202220601414.XU CN202220601414U CN218435231U CN 218435231 U CN218435231 U CN 218435231U CN 202220601414 U CN202220601414 U CN 202220601414U CN 218435231 U CN218435231 U CN 218435231U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model relates to a denitrification reaction device, denitrification reaction device includes the reactor, have the reaction chamber in the reactor cylinder, be equipped with first baffle in the reaction chamber, the below of first baffle is equipped with anammox sludge bed, the top packing of first baffle has the filler of holding back, it is equipped with the three-phase separator to hold back the filler top, the cylinder lower extreme is equipped with the water inlet, the cylinder upper end is equipped with outlet and gas vent, denitrification reaction device still includes the muffler, preprocessing device includes the treatment chamber, the treatment chamber is used for holding sewage, the treatment chamber has the sewage export, the air inlet, sewage outlet connects water intake pipe, the one end of muffler links to each other with the gas vent, the other end links to each other with the air inlet, from the gas vent combustion gas mainly is nitrogen gas, the combustion gas flows back in preprocessing device through the muffler, thereby play the effect of nitrogen gas exposure to the sewage of treatment intracavity, the content of dissolved oxygen in the reducible sewage, and then strengthen the anaerobic environment in the reactor.
Description
Technical Field
The utility model relates to the technical field of biological treatment of water, waste water or sewage, in particular to a denitrification reaction device.
Background
Since the discovery of the anammox denitrification process in the last 90 th century, the continuous exploration of researchers in the field of environmental protection for more than 20 years has become a popular research in the field of sewage denitrification. The principle is that under the anaerobic condition, the anaerobic ammonia oxidizing bacteria carry out biological denitrification reaction by taking ammonia nitrogen as an electron donor and nitrite nitrogen as an electron donor, and nitrogen and a small amount of nitrate nitrogen are taken as final products. As a new biological denitrification technology, compared with the traditional nitrification and denitrification, the aeration quantity can be reduced by 60 percent, no additional carbon source is needed, and the sludge yield is low.
However, the anaerobic ammonia oxidizing bacteria have long generation period (about 11 days), extremely high requirements on living conditions such as pH, DO, NLR, temperature and the like, and the further engineering of the process is also restricted by the problems of serious sludge loss and the like. At present, UASB reactors are mostly adopted for anaerobic ammonia oxidation research at home and abroad, but the problems of maintaining a good anaerobic environment, avoiding sludge loss, rapidly enriching anaerobic ammonia oxidizing bacteria and the like are difficult to solve in the traditional UASB.
The patent document with the publication number of CN204779031U discloses a high-efficiency denitrification device for treating advanced landfill leachate by using a UASB-anaerobic ammonium oxidation granular sludge composite biomembrane, which comprises a reactor and a water inlet tank, wherein sewage is stored in the water inlet tank, the reactor is a hollow cylinder, a reaction chamber for biological reaction is formed by an inner cavity of the cylinder, a water inlet is formed in the bottom of the cylinder, the water inlet is connected with the water inlet tank through a water inlet pipeline, an exhaust port is formed in the top of the cylinder and is connected with a drain pipe, an anaerobic ammonium oxidation sludge bed is arranged at the lower part of the reaction chamber, a biomembrane layer is arranged at the upper part of the anaerobic ammonium oxidation sludge bed, a three-phase separator is arranged at the upper part of the biomembrane layer, the biomembrane is formed by spherical fillers and can intercept granular sludge floating upwards due to gas production, and after gas is discharged, the granular sludge slides back to the sludge bed under the action of gravity, so that sludge loss is reduced. However, in practical use of such denitrification apparatus, the sewage has dissolved oxygen and enters the reaction chamber along with the sewage from the water inlet, so that the inside of the reaction chamber still has a problem of not strict anaerobic environment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a denitrification reaction device to solve the inside anaerobism effect of current denitrification reaction device problem strict inadequately.
The technical proposal of the denitrification reaction device of the utility model is that:
denitrogenation reaction unit, including reactor and water intake pipe, the reactor includes the cylinder, have the reaction chamber in the cylinder, be equipped with first baffle in the reaction chamber, the below of first baffle is equipped with anammox sludge bed, the top packing of first baffle has the filler of holding back, it is equipped with the three-phase separator to hold back the filler top, the cylinder lower extreme is equipped with the communicating water inlet with anammox sludge bed, the water inlet links to each other with the water intake pipe, the cylinder upper end is equipped with outlet and gas vent, denitrogenation reaction unit still includes the muffler, preprocessing device includes the treatment chamber, the treatment chamber is used for holding sewage, the treatment chamber has the outlet of sewage, the air inlet, sewage outlet connects the water intake pipe, the one end of muffler with the gas vent links to each other, the other end links to each other with the air inlet of treatment chamber, in order to supply the reactor combustion gas treatment chamber to flow back to carry out aeration deoxidation to sewage.
Has the advantages that: sewage enters the reactor from the water inlet, anaerobic ammoxidation reaction is carried out on an anaerobic ammoxidation sludge bed, then the sewage flows upwards into the filler area, the sludge is intercepted, then the sewage flows upwards into the three-phase separator for gas, liquid and solid three-phase separation, after the anaerobic ammoxidation reaction, gas discharged from the gas outlet is mainly nitrogen, and the discharged gas flows back into the pretreatment device through the gas return pipe, so that the effect of nitrogen exposure is achieved on the sewage in the treatment cavity, the content of dissolved oxygen in the sewage can be reduced, the anaerobic environment in the reactor is further enhanced, the rapid propagation of anaerobic ammoxidation bacteria of the anaerobic ammoxidation sludge bed is facilitated, and the treatment effect is improved.
Furthermore, preprocessing device is the aeration treatment case, and the inner chamber of aeration treatment case forms the treatment chamber, the muffler stretches into the treatment chamber downwards from the upper end of aeration treatment case, and the muffler has the end of giving vent to anger that is in the treatment chamber bottom, and the aeration treatment case still includes the outlet pipe, and the outlet pipe is the U-shaped structure, and the opening of U-shaped structure is down, and the outlet pipe is including stretching into the inner of treatment intracavity and the outer end that links to each other with the inlet channel, and the inner of outlet pipe is higher than the end of giving vent to anger of muffler.
Has the advantages that: the U-shaped water outlet pipe is arranged, so that the connection with a water inlet pipeline is convenient, and meanwhile, the inner end of the water outlet pipe is higher than the air outlet end of the air return pipe, which extends into the treatment cavity, so that sewage after aeration and deoxidation can flow out.
Furthermore, a denitrification sludge bed is arranged in the reaction cavity and is positioned between the interception filler and the three-phase separator.
Has the beneficial effects that: because the anaerobic ammonia oxidation sludge bed or the anaerobic ammonia oxidation reaction which occurs under the assistance of the filler area can not completely denitrify, the nitrate nitrogen in the product can not be removed, therefore, the denitrification sludge bed is arranged above the interception filler, so that the nitrate nitrogen is reduced into nitrogen under the action of denitrifying bacteria to complete deep denitrification; simultaneously, carry out degree of depth denitrogenation through the denitrification reaction, can improve exhaust nitrogen gas volume, and then improve the effect of driving oxygen to the sewage aeration nitrogen gas of handling the incasement.
Furthermore, a backflow water outlet is arranged on the cavity wall of the region in which the three-phase separator is arranged in the reaction cavity, a backflow water inlet is arranged on the cavity wall of the region in which the interception filler is arranged in the reaction cavity, and a backflow pipe is connected between the backflow water outlet and the backflow water inlet so as to allow part of liquid separated by the three-phase separator to flow back to the interception filler.
Has the advantages that: because the denitrification of the nitrate nitrogen is incomplete, or the filler with the carbon slow-release performance is inoculated in the denitrification sludge bed area, but the slow-release carbon source is not utilized by denitrifying bacteria, part of liquid separated by the three-phase separator flows back to the filler area, and the denitrification is continuously carried out to improve the denitrification effect.
Further, in the up-down direction, the water outlet is positioned above the return water outlet.
Has the advantages that: the water outlet is arranged above the return water outlet, so that after the water is treated by the three-phase separator, the purified water on the upper layer can be discharged.
Furthermore, a second partition plate is arranged between the denitrification sludge bed and the interception filler, and the second partition plate is provided with pores for fluid to pass through.
Has the beneficial effects that: the baffle with the pores is favorable for stable arrangement of the denitrification sludge bed in the reaction cavity, and meanwhile, the smooth passing of fluid is ensured.
Furthermore, the cavity wall of the area in which the filler is intercepted in the reaction cavity is provided with two sampling ports which are an upper sampling port and a lower sampling port respectively.
Has the advantages that: through setting up one two sample connection on one and under, nitrogen element in the water sample after usable lower sample connection gets through anaerobic ammonia oxidation reaction in the anaerobic ammonia oxidation district changes, and the nitrogen element in the water sample after utilizing the upper sample connection to get through the filler entrapment district changes in order to judge whether take place anaerobic ammonia oxidation reaction in the filler district.
Further, the trapping filler is polyurethane sponge filler.
Has the advantages that: the filler has high void ratio, large specific surface area, large film forming amount and high rejection rate.
Furthermore, a denitrification filler with the carbon slow-release performance is also arranged in the region of the reaction cavity provided with the denitrification sludge bed.
Has the beneficial effects that: the denitrifying filler with the carbon slow-release performance is used as a carrier, so that the denitrifying bacteria can be enriched and grown, and a carbon source can be provided for the denitrifying bacteria.
Drawings
FIG. 1 is a schematic view of the structure of example 1 of a denitrification apparatus.
In the figure: 01. a pipe string; 02. a lower sealing plate; 03. an upper sealing plate; 04. an air return pipe; 101. an anammox zone; 102. a filler zone; 103. a denitrification zone; 104. a three-phase separation zone; 105. a water bath heating zone; 1. an aeration treatment tank; 2. a water inlet; 3. a water bath tube; 4. a first separator; 5. a lower sampling port; 6. an upper sampling port; 7. a backflow water inlet; 8. a gas-collecting channel; 9. a return water outlet; 10. an exhaust port; 11. a water outlet; 12. a water inlet for water bath heating; 13. a water outlet is heated in a water bath; 111. a water outlet pipe; 112. a multi-well plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present in the embodiments of the present invention, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the possible occurrences of the phrases "comprising one of 8230; \8230;" comprising 8230; "etc. does not exclude the presence of additional identical elements in any process, method, article, or apparatus that comprises the element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "provided" should be understood broadly, for example, the object provided may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
The present invention will be described in further detail with reference to examples.
as shown in figure 1, the denitrification reaction device comprises a reactor, a pretreatment device and a water inlet pipeline, wherein the pretreatment device is provided with a treatment cavity, the treatment cavity is used for accommodating sewage, and the sewage enters the reactor through the water inlet pipeline for denitrification reaction.
The reactor comprises a column made of organic glass, the inner diameter of the column is 5cm, and the height of the column is 120cm. Reaction cavity is equipped with in the cylinder, and the cylinder includes hollow column 01 and sets up last shrouding 03, the shrouding 02 down at tubular column 01 upper and lower both ends respectively, and tubular column 01 encloses into reaction cavity with last shrouding 03, lower shrouding 02.
The reaction cavity is divided into four areas, namely an anaerobic ammonia oxidation area 101, a packing area 102, a denitrification area 103 and a three-phase separation area 104 from bottom to top, and the four areas respectively perform different functions. The volume of the anaerobic ammonia oxidation zone 101 is 1/2 of the total volume of the reaction cavity, the volume of the filler zone 102 accounts for 5/24 of the total volume of the reaction cavity, the volume of the denitrification zone 103 accounts for 5/24 of the total volume of the reactor, and the volume of the three-phase separation zone 104 accounts for 1/12 of the total volume.
An anaerobic ammonia oxidation sludge bed is arranged in the anaerobic ammonia oxidation zone 101 to inoculate anaerobic ammonia oxidation floc sludge or particles. The filler area 102 is inoculated with an interception filler which is a polyurethane sponge filler and has large specific surface area, large film forming amount and high interception rate, and the filler area 102 mainly has the functions of intercepting the anaerobic ammonia oxidation floc or granular sludge floating up due to self-reaction gas production or hydraulic scouring of the anaerobic ammonia oxidation area 101, completing film forming to form a biomembrane and assisting the anaerobic ammonia oxidation area 101 to further complete the anaerobic ammonia oxidation reaction. The denitrification area 103 is internally provided with a denitrification sludge bed, the denitrification area 103 is mainly used for deep denitrification, and nitrate nitrogen generated by anaerobic ammonia oxidation reaction under the assistance of the anaerobic ammonia oxidation area 101 or the filler area 102 cannot be removed, so the denitrification area 103 is specially arranged to reduce the nitrate nitrogen into nitrogen under the action of denitrifying bacteria to complete the deep denitrification. After the denitrification sludge is inoculated, denitrification needs a carbon source due to denitrification and denitrifying bacteria also need a carrier for enrichment growth, so that denitrification fillers with the carbon slow-release performance, such as rice, wheat and other biomass fillers subjected to compound modification, are inoculated in the denitrification area 103. The three-phase separation zone 104 is provided with a three-phase separator, and the three-phase separation zone 104 is mainly used for separating gas, liquid and sludge, discharging and refluxing artificial wastewater subjected to anaerobic ammonia oxidation and denitrification and then denitrified.
The reaction cavity is internally provided with a first clapboard 4, the anaerobic ammonia oxidation sludge bed is positioned below the first clapboard 4, the interception filler is positioned above the first clapboard 4, and the anaerobic ammonia oxidation zone 101 and the filler zone 102 are separated by the first clapboard 4. The reaction cavity is also provided with a second clapboard and a third clapboard, the second clapboard is positioned between the denitrification sludge bed and the interception filler so as to separate the filler area 102 from the denitrification area 103, and the third clapboard is positioned between the denitrification sludge bed and the three-phase separator so as to separate the denitrification area 103 from the three-phase separation area 104. The first partition plate 4, the second partition plate and the third partition plate are all perforated partition plates, holes are formed in the perforated partition plates, fluid can pass through the holes, the porosity of each perforated partition plate is 80%, and the diameter of each hole is 0.3cm.
The column 01 of the reactor was made of plexiglass, with an internal diameter of 5cm and a height of 120cm. The lower end of the column body is provided with a water inlet 2 communicated with an anaerobic ammonia oxidation sludge bed, the water inlet 2 is connected with a water inlet pipeline, the upper end of the column body is provided with a water outlet 11 and an exhaust port 10, the water outlet 11 is arranged at the upper end of the tubular column 01, the exhaust port 10 is arranged on the upper sealing plate 03, the three-phase separator comprises a gas collecting hood 8, the upper end of the gas collecting hood 8 is connected with an exhaust pipe, the exhaust pipe is communicated with the exhaust port 10, and the aperture of the exhaust pipe is set to be 0.5-1.0 cm.
A backflow water outlet 9 is arranged on the cavity wall of the three-phase separation zone 104, a backflow water inlet 7 is arranged on the cavity wall of the packing zone 102, and a backflow pipe is connected between the backflow water outlet 9 and the backflow water inlet 7 so as to enable part of liquid separated by the three-phase separator to flow back to the trapped packing position. The slow-release carbon source released by the denitrification area 103 may not be utilized by denitrifying bacteria or nitrate nitrogen denitrification is incomplete, so that the liquid in the three-phase separation area 104 flows back to the top of the filler area 102 by 2-3 cm, and denitrification is continued to improve the denitrification effect. The drain port 11 is located above the return outlet 9 in the vertical direction. The water outlet 11 is arranged 3-4 cm away from the lower side surface of the upper sealing plate 03, and the return water outlet 9 is arranged 4-5 cm away from the lower side surface of the upper sealing plate 03.
The wall of the filling area 102 is provided with two sampling ports, namely an upper sampling port 6 and a lower sampling port 5. By arranging the upper sampling port, the lower sampling port 5 is mainly used for taking the nitrogen change in the water sample after the anaerobic ammonia oxidation reaction in the anaerobic ammonia oxidation area 101, and the upper sampling port 6 is mainly used for taking the nitrogen change in the water sample after the anaerobic ammonia oxidation reaction in the filler area 102 to judge whether the anaerobic ammonia oxidation reaction occurs in the filler area 102.
The bottom of the gas-collecting hood 8 is higher than the third clapboard by 1-2 cm, the gas-collecting hood 8 is in a conical structure, the included angle between the generatrix of the conical structure and the horizontal plane is kept at 15-20 degrees, and the distance between the edge of the gas-collecting hood 8 and the wall surface of the reaction chamber is 0.2-0.5 cm.
Denitrification reaction unit includes water bath heater, and water bath heater includes water bath pipe 3, and 3 covers in the periphery of reactor of water bath pipe, and the space between the cylinder of water bath pipe 3 and reactor constitutes the water bath zone of heating 105, is equipped with water bath heating water inlet 12 and water bath heating delivery port 13 on the water bath pipe 3, and water bath heater includes temperature control switch of control temperature, and control temperature is at 30 1 ℃.
The pretreatment device is an aeration treatment box 1, and the inner cavity of the aeration treatment box 1 forms a treatment cavity. Denitrification reaction unit still includes muffler 04, the treatment chamber has the sewage export, the air inlet, sewage exit linkage water intake pipe, muffler 04's one end links to each other with gas vent 10, the other end links to each other with the air inlet of treatment chamber, aeration treatment case 1 has open upper shed, the upper shed constitutes the air inlet, muffler 04 stretches into in the treatment chamber downwards through aeration treatment case 1's upper shed, and stretch to the position that is close to the treatment chamber bottom, muffler 04 has the end of giving vent to anger that is in the treatment chamber bottom, muffler 04 is used for carrying out aeration deoxidation to sewage with supplying the treatment chamber backward flow of reactor combustion gas.
The aeration treatment tank 1 further comprises a water outlet pipe 111, the water outlet pipe 111 is of a U-shaped structure, the opening of the U-shaped structure faces downwards, the water outlet pipe 111 comprises an inner end extending into the treatment cavity and an outer end connected with the water inlet pipeline, a sewage outlet is formed by an outer end pipe orifice of the water outlet pipe 111, and the inner end of the water outlet pipe 111 is higher than the air outlet end of the air return pipe 04. A perforated plate 112 is also arranged in the aeration treatment box 1, the air return pipe 04 penetrates through the perforated plate 112, and the air outlet end is positioned below the perforated plate 112. The porous plate 112 is arranged, so that the gas coming out of the gas return pipe 04 can be dispersed, and the aeration and deoxidation effects are improved.
When in use, the ammonia nitrogen and nitrite nitrogen containing concentration is 1:1 to 1:1.3, pumping sewage into a reactor from a water inlet 2 through a water inlet pipeline, carrying out anaerobic ammonium oxidation reaction on an anaerobic ammonium oxidation sludge bed, enabling the sewage to flow upwards into a filler area 102, intercepting sludge, enabling the sewage to flow upwards into a three-phase separator for gas, liquid and solid three-phase separation, enabling gas discharged from an exhaust port 10 to be mainly nitrogen after the anaerobic ammonium oxidation reaction, and enabling the discharged gas to flow back into a pretreatment device through an air return pipe 04, so that the sewage in a treatment cavity has the function of nitrogen exposure, the content of dissolved oxygen in the sewage can be reduced, the anaerobic environment in the reactor is further enhanced, the rapid propagation of anaerobic ammonium oxidation bacteria of the anaerobic ammonium oxidation sludge bed is facilitated, and the treatment effect is improved. Carry out degree of depth denitrogenation through the denitrification reaction, can improve exhaust nitrogen gas volume, and then improve the effect of driving oxygen to the sewage aeration nitrogen gas of handling the incasement.
The filler in the filler area 102 can retain the sludge floating up due to hydraulic scouring or gas scouring of the anaerobic ammonium oxidation sludge in the sludge area, so that the loss of the anaerobic ammonium oxidation sludge is avoided; the existence of the filler in the filler area 102 and the existence of the upper denitrification area 103 can ensure that the whole reaction system has better tightness, and is favorable for maintaining a good anaerobic environment to provide conditions for the rapid and effective propagation of the anaerobic ammonium oxidation bacteria; in addition, the filler area 102 also prevents the anaerobic ammonia oxidation sludge in the anaerobic ammonia oxidation area 101 from rushing out to the denitrification area 103 or preventing the denitrification sludge from sliding down to the anaerobic ammonia oxidation sludge area, and plays a role in buffering.
When substrate NH is fed 4 + -N and NO 2 - When N cannot be completely removed in the anammox area 101 and sewage flows through the filler area 102, the sludge retained by the filler can continue to carry out the anammox reaction to further remove NH 4 + -N and NO 2 - N, improving denitrification effect; the existence of the denitrification zone 103 can further remove NO produced in the anammox zone 101 3 - N, further denitrification to achieve the effect of deep denitrification; and because the water flow direction of the reactor is upward flow, the slow-release carbon source released by the slow-release carbon source filler in the denitrification region 103 cannot reversely flow into the anammox region 101, so that the safe growth and propagation of anammox bacteria are ensured.
The lower anaerobic ammonia oxidation zone 101 is responsible for removing most of total nitrogen by anaerobic ammonia oxidation, the middle filler zone 102 is responsible for intercepting anaerobic ammonia oxidation sludge floating upwards due to hydraulic scouring and the like, the upper denitrification zone 103 is responsible for further removing nitrate nitrogen generated by anaerobic ammonia oxidation reaction, the whole process completes deep denitrification, and the reactor has simple structure and saves manufacturing cost; even in the same reactor, the anammox bacteria and the denitrifying bacteria are respectively in the optimal living space and do not interfere with each other, so that the anammox bacteria with extremely low growth rate can be quickly and effectively enriched.
this example differs from example 1 in that in example 1, the pretreatment apparatus is an open aeration treatment tank. In this embodiment, the pretreatment device includes a box body and a cover body, the box body and the cover body enclose an inner cavity, the inner cavity constitutes a treatment cavity, an air inlet pipe and an air outlet pipe are arranged on the cover body in a penetrating manner, the inner end of the air inlet pipe extends into the bottom of the treatment cavity, the outer end of the air inlet pipe is connected with an air return pipe, and the air outlet pipe is connected with an air inlet pipeline.
the difference between the present example and example 1 is that in example 1, an anammox sludge bed, a denitrification sludge bed, and a cut-off filler are provided in the reaction chamber. In the embodiment, the anaerobic ammonia oxidation sludge bed and the interception filler are arranged in the reaction cavity, and the gas after the anaerobic ammonia oxidation reaction is directly discharged from the exhaust port.
Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and 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 the technical solutions described in the foregoing embodiments may be modified without inventive effort, or some technical features may be substituted equally. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Denitrogenation reaction unit, including reactor and water intake pipe, the reactor includes the cylinder, have the reaction chamber in the cylinder, be equipped with first baffle (4) in the reaction chamber, the below of first baffle (4) is equipped with anammox sludge bed, the top packing of first baffle (4) has the filler of holding back, it is equipped with the three-phase separator to hold back the filler top, the cylinder lower extreme is equipped with communicating water inlet (2) with anammox sludge bed, water inlet (2) link to each other with the water intake pipe, the cylinder upper end is equipped with outlet (11) and gas vent (10), the novel gas removal device is characterized by, denitrogenation reaction unit still includes muffler (04), preprocessing device includes the treatment chamber, the treatment chamber is used for holding sewage, the treatment chamber has sewage outlet, the air inlet, sewage outlet connects the water intake pipe, the one end of muffler (04) with gas vent (10) link to each other end links to each other end and the air inlet of treatment chamber, in order to supply the reactor combustion gas to flow back to carry out aeration deoxidation to the treatment chamber to sewage.
2. The denitrification reaction device according to claim 1, wherein the pretreatment device is an aeration treatment tank (1), the inner cavity of the aeration treatment tank (1) forms the treatment cavity, the air return pipe (04) extends downwards into the treatment cavity from the upper end of the aeration treatment tank (1), the air return pipe (04) is provided with an air outlet end at the bottom of the treatment cavity, the aeration treatment tank (1) further comprises an water outlet pipe (111), the water outlet pipe (111) is of a U-shaped structure, the opening of the U-shaped structure faces downwards, the water outlet pipe (111) comprises an inner end extending into the treatment cavity and an outer end connected with a water inlet pipeline, and the inner end of the water outlet pipe (111) is higher than the air outlet end of the air return pipe (04).
3. The denitrification reaction device according to claim 1 or 2, wherein a denitrification sludge bed is further provided in the reaction chamber, and the denitrification sludge bed is located between the retention packing and the three-phase separator.
4. The denitrification reactor according to claim 3 wherein a return water outlet (9) is provided on the wall of the region in the reaction chamber where the three-phase separator is provided, a return water inlet (7) is provided on the wall of the region in the reaction chamber where the retention packing is provided, and a return pipe is connected between the return water outlet (9) and the return water inlet (7) for returning part of the liquid separated by the three-phase separator to the retention packing.
5. The denitrification reaction apparatus according to claim 4, wherein the drain port (11) is located above the return water outlet (9) in the vertical direction.
6. The denitrification reactor according to claim 3, wherein a second partition is provided between the denitrification sludge bed and the retention packing, and the second partition is provided with pores through which the fluid passes.
7. The denitrification reactor according to claim 1 or 2, wherein the wall of the reaction chamber in which the region for trapping the filler is provided with two sampling ports, namely an upper sampling port (6) and a lower sampling port (5).
8. The denitrification reactor as recited in claim 1 or 2, wherein the retention packing is a polyurethane sponge packing.
9. The denitrification reaction apparatus according to claim 1 or 2, wherein a denitrification filler having a carbon-releasing property is further provided in the region where the denitrification sludge bed is provided in the reaction chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220601414.XU CN218435231U (en) | 2022-03-18 | 2022-03-18 | Denitrification reaction device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220601414.XU CN218435231U (en) | 2022-03-18 | 2022-03-18 | Denitrification reaction device |
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| CN218435231U true CN218435231U (en) | 2023-02-03 |
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| CN202220601414.XU Active CN218435231U (en) | 2022-03-18 | 2022-03-18 | Denitrification reaction device |
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