CN217498846U - Autotrophic denitrification advanced denitrification sewage treatment device - Google Patents
Autotrophic denitrification advanced denitrification sewage treatment device Download PDFInfo
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- CN217498846U CN217498846U CN202221599168.5U CN202221599168U CN217498846U CN 217498846 U CN217498846 U CN 217498846U CN 202221599168 U CN202221599168 U CN 202221599168U CN 217498846 U CN217498846 U CN 217498846U
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Abstract
The application discloses autotrophic denitrification degree of depth denitrogenation sewage treatment plant, including nitrifying pond and autotrophic denitrification pond, nitrify the pond in and be equipped with the nitration filling layer, nitrify the filling layer and can change the ammonia nitrogen in the sewage into nitrate nitrogen, nitrify and be equipped with on the pond and nitrify the water inlet and nitrify the delivery port, nitrify the water inlet and nitrify the delivery port and be located respectively nitrify the both sides of filling layer, be equipped with the denitrification water inlet on the autotrophic denitrification pond, nitrify the delivery port with the denitrification water inlet links to each other. The application can convert ammonia nitrogen in the sewage to be treated into nitrate nitrogen, solves the problem of poor ammonia nitrogen treatment effect of the autotrophic denitrification technology, and meets the sewage treatment requirement of deep denitrification.
Description
Technical Field
The application belongs to the field of sewage treatment equipment, and more particularly relates to an autotrophic denitrification advanced nitrogen removal sewage treatment device.
Background
The total nitrogen content in water is one of important indexes for measuring water quality, and the definition of the total nitrogen is the total amount of various forms of inorganic and organic nitrogen in water. At present, the treatment technology for total nitrogen in sewage is still applied most widely by the traditional activated sludge method, but the process defects are gradually revealed along with the improvement of the discharge standard, and the traditional activated sludge method is difficult to realize deep removal of the total nitrogen. From the critical value of water eutrophication, the water eutrophication is likely to be caused if the nitrogen content in the water is higher than 0.2-0.3 mg/L, and the total nitrogen standard of water quality purification plants in China is mostly 15mg/L, and the discharge concentration of the nitrogen is far higher than the index of water eutrophication.
In order to improve the quality of the water environment, the tail water of a water quality purification plant needs to be subjected to advanced treatment, particularly the advanced treatment of the total nitrogen in the tail water. The Beijing City has implemented a new standard from 31 days 12 months 12 in 2015, which requires that the total nitrogen standard of the existing Beijing sewage treatment plant is increased to below 8 mg/L. Therefore, advanced treatment of effluent from sewage treatment plants has become a necessary trend, and development of new economic and feasible advanced treatment technology of total nitrogen is urgently needed.
In recent years, a plurality of brand new denitrification processes are developed at home and abroad, a new way is provided for the denitrification treatment of wastewater, and the autotrophic microorganism denitrification method is one of the processes; the autotrophic microorganism denitrification method has the characteristics of no need of additional carbon source, low operation cost, small sludge production, simple microorganism culture and domestication and the like, and becomes a hotspot of recent research. Research finds that the autotrophic denitrification technology has good denitrification effect on sewage mainly containing nitrate nitrogen, but has poor denitrification effect on sewage mainly containing ammonia nitrogen, thereby influencing the deep denitrification effect of the autotrophic denitrification sewage treatment device.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that autotrophic denitrification sewage treatment plant among the above-mentioned prior art can't carry out degree of depth denitrogenation to sewage, this application provides an autotrophic denitrification degree of depth denitrogenation sewage treatment plant, including nitrifying pond and autotrophic denitrification pond, nitrify the pond in and be equipped with the nitration filling layer, nitrify the filling layer and can change the ammonia nitrogen in the sewage into nitrate nitrogen, nitrify and be equipped with on the pond and nitrify the water inlet and nitrify the delivery port, nitrify the water inlet and nitrify the delivery port and be located respectively nitrify the both sides of filling layer, be equipped with the denitrification water inlet on the autotrophic denitrification pond, nitrify the delivery port with the denitrification water inlet links to each other.
As the further improvement of this application, nitrify and be equipped with on the pond and nitrify the water inlet and nitrify the air inlet, nitrify and be connected with the inlet tube of nitrifying on the water inlet, nitrify and be connected with the intake pipe of nitrifying on the air inlet, nitrify and be equipped with first water pump on the inlet tube, nitrify and be equipped with first air pump in the intake pipe.
As the further improvement of this application, nitrify the water inlet and nitrify the air inlet and be located respectively nitrify the below of filling layer, nitrify and be equipped with first filter plate in the pond, first filter plate sets up nitrify the water inlet and nitrify between the filling layer, the array is equipped with a plurality of first filter heads on the first filter plate.
As a further improvement of the application, a first shunt pipe is arranged in the nitrification tank, two ends of the first shunt pipe are respectively connected with the nitrification water inlet and the nitrification air inlet, and a plurality of first through holes are equidistantly distributed on the first shunt pipe; the water inlet pipe is provided with a first water valve, the first water valve is arranged between the first water pump and the nitrification water inlet, the nitrification air inlet pipe is provided with a first air valve, and the first air valve is arranged between the first air pump and the nitrification air inlet.
As a further improvement of the application, a denitrification structure is arranged in the autotrophic denitrification tank, a denitrification water outlet is arranged on the autotrophic denitrification tank, and the denitrification structure is arranged between the denitrification water inlet and the denitrification water outlet; the denitrification structure includes deoxidization filling layer and denitrogenation filling layer, the deoxidization filling layer sets up between denitrification water inlet and the denitrogenation filling layer, be equipped with the baffle between deoxidization filling layer and the denitrogenation filling layer, the array is equipped with a plurality of second through-holes on the baffle.
As the further improvement of this application, be equipped with the deodorization filling layer in the autotrophic denitrification pond, the deodorization filling layer sets up the denitrogenation filling layer with between the denitrification delivery port.
As the further improvement of this application, be connected with the denitrification inlet tube on the denitrification water inlet, be equipped with second water pump and second water valve on the denitrification inlet tube, the second water valve sets up the second water pump with between the denitrification water inlet.
As a further improvement of the application, a second filter plate is arranged in the autotrophic denitrification tank, the second filter plate is arranged between the denitrification water inlet and the deoxidization filling layer, and a plurality of second filter heads are arranged on the second filter plate in an array manner; and a second shunt pipe is arranged in the autotrophic denitrification tank, one end of the second shunt pipe is connected with the denitrification water inlet, and a plurality of third through holes are distributed on the second shunt pipe at equal distances.
As a further improvement of the application, a back-washing air inlet, a back-washing water inlet and a back-washing water outlet are arranged on the autotrophic denitrification tank, the back-washing air inlet is arranged below the denitrification structure, the back-washing air inlet is connected with one end of the second shunt pipe, which is far away from the denitrification water inlet, and the back-washing water inlet is arranged above the partition plate; the backwashing water inlet is connected with a backwashing water inlet pipe, the backwashing water inlet pipe is provided with a second air pump and a second air valve, the second air valve is arranged between the second air pump and the backwashing water inlet, the backwashing water inlet is connected with a backwashing water inlet pipe, the backwashing water inlet pipe is provided with a third water pump and a third water valve, and the third water valve is arranged between the third water pump and the backwashing water inlet.
As the further improvement of this application, still include middle water tank, be equipped with the water tank delivery port on the middle water tank, nitrify the delivery port with middle water tank links to each other, the water tank delivery port with the denitrification water inlet links to each other.
Compared with the prior art, the beneficial effect of this application is:
this application is through setting up the nitrification tank to set up in the nitrification tank and nitrify the filling layer, can convert the ammonia nitrogen in the pending sewage into nitrate nitrogen, and then carry out denitrification treatment through the autotrophic denitrification pond again, solved the not good problem of autotrophic denitrification technique to ammonia nitrogen treatment effect, satisfy the sewage treatment requirement of degree of depth denitrogenation.
Specifically, a nitrification tank is arranged in front of the autotrophic denitrification tank, sewage to be treated flows through the nitrification tank for nitrification treatment, ammonia nitrogen in the sewage can be converted into nitrate nitrogen through a nitrification filling layer, and the sewage treated by the nitrification tank is subjected to denitrification treatment by the autotrophic denitrification tank, so that the total nitrogen content of the sewage treated by the autotrophic denitrification tank is greatly reduced, and the deep denitrification of the sewage is realized.
Drawings
In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic diagram of the structure of a nitrification tank in the embodiment of the present application;
FIG. 3 is a schematic diagram of the structure of an autotrophic denitrification tank in the present application.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1-3, an autotrophic denitrification advanced nitrogen removal sewage treatment device comprises an intermediate water tank 1, a nitrification tank 2 and an autotrophic denitrification tank 3, wherein the bottom end of the intermediate water tank 1 is provided with a water tank water outlet 101, the nitrification tank 2 is provided with a nitrification water inlet 201 and a nitrification water outlet 202, the nitrification water outlet 202 is connected with the intermediate water tank 1 through a pipeline, the autotrophic denitrification tank 3 is provided with a denitrification water inlet 31, and the water tank water outlet 101 is connected with the denitrification water inlet 31; when the device works, sewage to be treated flows into the nitrification tank 2 from the water inlet 21 of the nitrification tank, then flows into the intermediate water tank 1 from the nitrification water outlet 202, then flows into the denitrification water inlet 31 from the water outlet 101 of the water tank, and then flows into the autotrophic denitrification tank 3, and the intermediate water tank 1 is used for storing and precipitating water. In other embodiments, the intermediate water tank 1 may not be required, and the nitrification water outlet 202 and the denitrification water inlet 31 may be connected by a pipeline.
A nitrification filling layer 4 is arranged in the nitrification tank 2, the nitrification filling layer 4 is arranged between the nitrification water inlet 201 and the nitrification water outlet 202, and the nitrification water inlet 201 is arranged below the nitrification filling layer 4; the nitrifying filling layer 4 is a porous ceramsite filter material, so that nitrifying bacteria can be attached and grow; when the nitrifying water treatment device works, sewage to be treated enters the nitrifying tank 2 from the nitrifying water inlet 201 and flows through the nitrifying filling layer 4, nitrifying bacteria in the nitrifying filling layer 4 can convert ammonia nitrogen in the sewage into nitrate nitrogen, the nitrified sewage is discharged out of the nitrifying tank 2 through the nitrifying water outlet 202, and at the moment, most of total nitrogen in water flowing out of the nitrifying water outlet 202 exists in the form of nitrate nitrogen; the nitrified water flows into the autotrophic denitrification tank 3 after passing through the intermediate water tank 1, and the autotrophic denitrification tank 3 converts nitrate nitrogen in the water into nitrogen, so that the deep denitrification of the sewage is realized.
The nitrification tank 2 is provided with a nitrification air inlet 203, the nitrification water inlet 201 is connected with a nitrification water inlet pipe 5, the nitrification air inlet 203 is connected with a nitrification air inlet pipe 6, the nitrification water inlet pipe 5 is provided with a first water pump 7 and a first water valve 8, and the first water valve 8 is arranged between the first water pump 7 and the nitrification water inlet 201. The nitrification air inlet pipe 6 is provided with a first air pump 9 and a first air valve 10, the first air valve 10 is arranged between the first air pump 9 and the nitrification air inlet 203, and the first air pump 9 is arranged to convey more oxygen into the nitrification tank 2, so that the oxygen content in the sewage entering the nitrification tank 2 is improved, the nitrification reaction of the sewage in the nitrification tank 2 is sufficient, and the conversion efficiency of ammonia nitrogen and nitrate nitrogen is improved.
When the nitrifying water tank works, the first water valve 8, the first water pump 7, the first air valve 10 and the first air pump 9 are opened, sewage to be treated is pumped into the nitrifying tank 2 by the first water pump 7, meanwhile, air is pumped into the nitrifying tank 2 by the first air pump 9, so that the oxygen content of the sewage entering the nitrifying tank 2 is improved, after the sewage enters the nitrifying filling layer 4 under the condition of oxygen enrichment, nitrification reaction can be fully performed, ammonia nitrogen in the sewage is converted into nitrate nitrogen, and the nitrate nitrogen is discharged out of the nitrifying tank 2 through the nitrifying water outlet 202.
In order to ensure that sewage entering the nitrification tank 2 uniformly enters the nitrification filling layer 4, a first filter plate 11 is arranged in the nitrification tank 2, the first filter plate 11 is arranged between the nitrification water inlet 201 and the nitrification filling layer 4, and a plurality of first filter heads 12 are arranged on the first filter plate 11 in an array manner; and a first shunt pipe 13 is arranged in the nitrification tank 2, two ends of the first shunt pipe 13 are respectively connected with the nitrification water inlet 201 and the nitrification air inlet 203, and a plurality of first through holes 131 are distributed on the first shunt pipe 13 at equal distances. During operation, sewage to be treated is pumped into the first shunt pipe 13 by the first water pump 7, fresh air is pumped into the first shunt pipe 13 by the first air pump 9, water and air are mixed in the first shunt pipe 13, then flow out of the first through hole 131, and enter the nitrification filling layer 4 through the first filter head 12 to perform nitrification reaction.
The autotrophic denitrification tank 3 is provided with a denitrification water outlet 32, the autotrophic denitrification tank 3 is internally provided with a denitrification structure, the denitrification structure is arranged between a denitrification water inlet 31 and the denitrification water outlet 32, and the denitrification water inlet 31 is arranged at the bottom end of the autotrophic denitrification tank 3. The denitrification structure includes deoxidization filling layer 14 and denitrogenation filling layer 15, and deoxidization filling layer 14 sets up between denitrification water inlet 31 and denitrogenation filling layer 15, is equipped with baffle 16 between deoxidization filling layer 14 and the denitrogenation filling layer 15, and the array is equipped with a plurality of second through-holes 161 on the baffle 16. The denitrification water inlet 31 is connected with a denitrification water inlet pipe 17, one end of the denitrification water inlet pipe 17 is connected with the water tank water outlet 101, the other end of the denitrification water inlet pipe 17 is connected with the denitrification water inlet 31, the denitrification water inlet pipe 17 is provided with a second water pump 18 and a second water valve 19, and the second water valve 19 is arranged between the second water pump 18 and the denitrification water inlet 31.
When the device works, water treated by the nitrification tank 2 enters the intermediate water tank 1, the second water pump 18 and the second water valve 19 are opened, the second water pump 18 pumps the water into the autotrophic denitrification tank 3, and the water firstly enters the deoxygenation filling layer 14, so that the oxygen content in the inlet water is reduced, and the inhibition effect of dissolved oxygen on autotrophic denitrification nitrogen removal is avoided; then enters the denitrification filling layer 15 through the second through hole 161 on the partition plate 16, provides an electron donor for the autotrophic denitrification process through the denitrification filling layer 15, converts nitrate nitrogen in the sewage into nitrogen, realizes the purpose of deep denitrification, and discharges the denitrified water out of the autotrophic denitrification tank 3 through the denitrification water outlet 32.
The deoxidization filling layer 14 is granular high-reducibility zero-valent iron and is used for reducing dissolved oxygen in water entering a denitrification structure and providing an anoxic condition for autotrophic denitrification, a first feeding port 33 is arranged on the autotrophic denitrification tank 3, and the first feeding port 33 is connected with the deoxidization filling layer 14 and arranged at the upper end of the deoxidization filling layer 14 and is used for adding the zero-valent iron to the deoxidization filling layer 14; the denitrification filling layer 15 is granular pyrite-coupled autotrophic denitrification filler, on one hand, an attached growth carrier is provided for autotrophic denitrification bacteria, on the other hand, an electron donor is provided for autotrophic denitrification reaction, a second feeding port 34 is arranged on the autotrophic denitrification tank 3, the second feeding port 34 is connected with the denitrification filling layer 15 and arranged at the upper end of the denitrification filling layer 15 and used for adding denitrification filler to the denitrification filling layer 15; the partition 16 is used to prevent the oxygen-removing filling layer 14 and the denitrification filling layer 15 from mixing, and ensure that the influent water is firstly subjected to oxygen removal and then to autotrophic denitrification reaction.
When the autotrophic denitrification advanced nitrogen removal sewage treatment device works normally, the first feeding port 33 and the second feeding port 34 are covered by the blocking cover, and when fillers need to be added, the corresponding blocking cover is opened again for adding.
In order to ensure that water entering the autotrophic denitrification tank 3 can uniformly enter the denitrification structure, a second filter plate 20 is arranged in the autotrophic nitrification tank 3, the second filter plate 20 is arranged between a denitrification water inlet 31 and the deoxygenation filling layer 14, and a plurality of second filter heads 21 are arranged on the second filter plate 20 in an array manner; and a shunt pipe 22 is arranged in the autotrophic denitrification tank 3, one end of the second shunt pipe 22 is connected with a denitrification water inlet 31, and a plurality of third through holes 221 are distributed on the second shunt pipe 22 at equal distances. When the device works, the second water pump 18 pumps water in the middle water tank 1 into the second shunt pipe 22, then the water flows out of the autotrophic denitrification tank 3 from the third through hole 221, and then enters the deoxidizing filling layer 14 through the second filter head 21 to be deoxidized.
A deodorization filling layer 23 is arranged in the autotrophic denitrification tank 3, and the deodorization filling layer 23 is arranged between the denitrification filling layer 15 and the denitrification water outlet 32; the deodorization filling layer 23 is granular magnesium hydroxide filler, the magnesium hydroxide is a weakly alkaline material, the hydrogen sulfide in the treated water body is removed through neutralization, the concentration of the odor of the effluent after autotrophic denitrification is reduced, and simultaneously, the sulfate generated in the autotrophic denitrification process can be neutralized to balance the pH value of the effluent. During operation, water subjected to autotrophic denitrification by the denitrification filling layer 15 enters the deodorization filling layer 23 to react with the deodorization filling layer 23, so that odor in the water is reduced, and then the water is discharged out of the autotrophic denitrification tank 3 through the denitrification water outlet 32.
After the autotrophic denitrification tank 3 runs for a period of time, the filter tank needs to be backwashed, so as to remove impurities trapped in a denitrification structure. The autotrophic denitrification tank 3 is provided with a back-flushing air inlet 35, a back-flushing water inlet 36 and a back-flushing water outlet 37, the back-flushing air inlet 35 is arranged below the denitrification structure, the back-flushing air inlet 35 is connected with one end of the second shunt pipe 22 far away from the denitrification water inlet 31, and the back-flushing water inlet 36 is arranged above the partition plate 16; the backwashing air inlet 35 is connected with a backwashing air inlet pipe 24, the backwashing air inlet pipe 24 is provided with a second air pump 25 and a second air valve 26, the second air valve 26 is arranged between the second air pump 25 and the backwashing air inlet 35, the backwashing water inlet 36 is connected with a backwashing water inlet pipe 27, the backwashing water inlet pipe 27 is provided with a third water pump 28 and a third water valve 29, and the third water valve 29 is arranged between the third water pump 28 and the backwashing water inlet 36; the back flush water outlet 37 is arranged above the deodorization filling layer 23, and the back flush water outlet 37 is covered by a sealing cover during normal operation.
Before the autotrophic denitrification tank 3 is subjected to backwashing, the second water valve 19 is closed, and a blocking cover on the backwashing water outlet 37 is opened; during backwashing, the second air valve 26 is firstly opened, the second air pump 25 is started, air enters the second shunt pipe 22 from the backwashing air inlet 35, enters the autotrophic denitrification tank 3 through the third through hole 221, sequentially enters the deoxidizing filling layer 14, the denitrifying filling layer 15 and the deodorizing filling layer 23 through the second filter head 21, and finally flows out from the backwashing water outlet 37; then, an external water source is connected to the backwashing water inlet pipe 27, the third water valve 29 is opened, the third water pump 28 is started to carry out air-water combined backwashing, and after the air-water combined backwashing is finished, the second air valve 26 and the second air pump 25 are closed and water washing is carried out independently; the backwash wastewater is discharged through the backwash discharge port 37 and stored and disposed of accordingly.
The autotrophic denitrification advanced nitrogen removal sewage treatment device has the working process as follows:
the first water valve 8, the first water pump 7, the first air valve 10 and the first air pump 9 are opened, sewage to be treated is pumped into the first shunt pipe 13 by the first water pump 7, meanwhile, air is pumped into the first shunt pipe 13 by the first air pump 9, water and air are mixed in the first shunt pipe 13, so that the oxygen content in the sewage is increased, then the sewage flows out of the first through hole 131, the sewage enters the nitrification filling layer 4 through the first filter head 12 under the condition of oxygen enrichment, nitrification reaction can be sufficiently generated, ammonia nitrogen in the sewage is converted into nitrate nitrogen, the nitrate nitrogen is discharged out of the nitrification tank 2 through the nitrification water outlet 202, and the nitrate nitrogen flows into the middle water tank 1.
The second water pump 18 and the second water valve 19 are opened, the second water pump 18 pumps the water in the middle water tank 1 into the second shunt pipe 22, then the water flows out of the autotrophic denitrification tank 3 from the third through hole 221, and then the water enters the deoxygenation filling layer 14 through the second filter head 21 to be deoxygenated, so that the dissolved oxygen in the water entering the denitrification structure is reduced, and an anoxic condition is provided for autotrophic denitrification; then, the deoxidized water enters the denitrification filling layer 15 through the second through hole 161, and the denitrification filling layer 15 provides an electron donor for the autotrophic denitrification process, so that nitrate nitrogen in the sewage is converted into nitrogen, and the purpose of deep denitrification is achieved; the denitrified water flows into the deodorization filling layer 23 again to react with the deodorization filling layer 23, so that the odor in the water is reduced, and then the denitrified water is discharged out of the autotrophic denitrification tank 3 through the denitrification water outlet 32. Thus completing a round of sewage deep denitrification and deodorization treatment process.
After denitrification and deodorization are carried out for a period of time, the autotrophic denitrification tank needs to be subjected to back washing treatment; closing the second water valve 19 and opening a blocking cover on the back flush water outlet 37; during backwashing, the second air valve 26 is firstly opened, the second air pump 25 is started, air enters the second shunt pipe 22 from the backwashing air inlet 35, enters the autotrophic denitrification tank 3 through the third through hole 221, sequentially enters the deoxidizing filling layer 14, the denitrifying filling layer 15 and the deodorizing filling layer 23 through the second filter head 21, and finally flows out from the backwashing water outlet 37; then, an external water source is connected to the backwashing water inlet pipe 27, the third water valve 29 is opened, the third water pump 28 is started to carry out air-water combined backwashing, and after the air-water combined backwashing is finished, the second air valve 26 and the second air pump 25 are closed and water washing is carried out independently; the backwash wastewater is discharged through the backwash discharge port 37 and stored and disposed of accordingly.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of providing a more thorough understanding of the present disclosure. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (10)
1. An autotrophic denitrification advanced nitrogen removal sewage treatment device is characterized in that: including nitrifying pond and autotrophic denitrification pond, nitrify the pond in be equipped with and nitrify the filling layer, nitrify the filling layer and can change the ammonia nitrogen in the sewage into nitrate nitrogen, nitrify and be equipped with on the pond and nitrify the water inlet and nitrify the delivery port, nitrify the water inlet and nitrify the delivery port and be located respectively nitrify the both sides of filling layer, be equipped with the denitrification water inlet on the autotrophic denitrification pond, nitrify the delivery port with the denitrification water inlet links to each other.
2. The autotrophic denitrification advanced nitrogen removal sewage treatment plant according to claim 1, wherein: nitrify and be equipped with on the pond and nitrify the water inlet and nitrify the air inlet, nitrify and be connected with on the water inlet and nitrify the inlet tube, nitrify and be connected with on the air inlet and nitrify the intake pipe, nitrify and be equipped with first water pump on the inlet tube, nitrify and be equipped with first air pump in the intake pipe.
3. The autotrophic denitrification advanced nitrogen removal sewage treatment plant according to claim 2, wherein: nitrify the water inlet and nitrify the air inlet and be located respectively nitrify the below of filling layer, be equipped with first filter plate in the nitrify pond, first filter plate sets up nitrify the water inlet and nitrify between the filling layer, the array is equipped with a plurality of first filter heads on the first filter plate.
4. The autotrophic denitrification advanced nitrogen removal sewage treatment plant according to claim 3, wherein: a first shunt pipe is arranged in the nitrification tank, two ends of the first shunt pipe are respectively connected with the nitrification water inlet and the nitrification air inlet, and a plurality of first through holes are equidistantly distributed on the first shunt pipe;
the water inlet pipe is provided with a first water valve, the first water valve is arranged between the first water pump and the nitrification water inlet, the nitrification air inlet pipe is provided with a first air valve, and the first air valve is arranged between the first air pump and the nitrification air inlet.
5. The autotrophic denitrification advanced nitrogen removal sewage treatment plant according to any one of claims 1 to 4, wherein: a denitrification structure is arranged in the autotrophic denitrification tank, a denitrification water outlet is formed in the autotrophic denitrification tank, and the denitrification structure is arranged between the denitrification water inlet and the denitrification water outlet;
the denitrification structure includes deoxidization filling layer and denitrogenation filling layer, the deoxidization filling layer sets up between denitrification water inlet and the denitrogenation filling layer, be equipped with the baffle between deoxidization filling layer and the denitrogenation filling layer, the array is equipped with a plurality of second through-holes on the baffle.
6. The autotrophic denitrification advanced nitrogen removal sewage treatment plant according to claim 5, wherein: a deodorization filling layer is arranged in the autotrophic denitrification tank and is arranged between the denitrification filling layer and the denitrification water outlet.
7. The autotrophic denitrification advanced nitrogen removal sewage treatment plant according to claim 6, wherein: the denitrification water inlet is connected with a denitrification water inlet pipe, the denitrification water inlet pipe is provided with a second water pump and a second water valve, and the second water valve is arranged between the second water pump and the denitrification water inlet.
8. The autotrophic denitrification advanced nitrogen removal sewage treatment plant according to claim 7, wherein: a second filter plate is arranged in the autotrophic denitrification tank, the second filter plate is arranged between the denitrification water inlet and the deoxidization filling layer, and a plurality of second filter heads are arranged on the second filter plate in an array manner;
and a second shunt pipe is arranged in the autotrophic denitrification tank, one end of the second shunt pipe is connected with the denitrification water inlet, and a plurality of third through holes are distributed on the second shunt pipe at equal distances.
9. The autotrophic denitrification advanced nitrogen removal sewage treatment plant according to claim 8, wherein: a back-washing air inlet, a back-washing water inlet and a back-washing water outlet are arranged on the autotrophic denitrification tank, the back-washing air inlet is arranged below the denitrification structure, the back-washing air inlet is connected with one end of the second shunt pipe, which is far away from the denitrification water inlet, and the back-washing water inlet is arranged above the partition plate;
the backwashing water inlet is connected with a backwashing water inlet pipe, the backwashing water inlet pipe is provided with a second air pump and a second air valve, the second air valve is arranged between the second air pump and the backwashing water inlet, the backwashing water inlet is connected with a backwashing water inlet pipe, the backwashing water inlet pipe is provided with a third water pump and a third water valve, and the third water valve is arranged between the third water pump and the backwashing water inlet.
10. The autotrophic denitrification advanced nitrogen removal sewage treatment plant according to any one of claims 1 to 4 or 6 to 9, wherein: the water tank is characterized by further comprising an intermediate water tank, wherein a water tank water outlet is formed in the intermediate water tank, the nitrification water outlet is connected with the intermediate water tank, and the water tank water outlet is connected with the denitrification water inlet.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116332347A (en) * | 2023-02-10 | 2023-06-27 | 河南城发水务生态技术研究院有限公司 | Method for treating low-concentration ammonia nitrogen wastewater |
| CN117430247A (en) * | 2023-12-06 | 2024-01-23 | 青岛鑫源环保集团有限公司 | Drinking water nitrogen-reducing purifying equipment |
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2022
- 2022-06-25 CN CN202221599168.5U patent/CN217498846U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116332347A (en) * | 2023-02-10 | 2023-06-27 | 河南城发水务生态技术研究院有限公司 | Method for treating low-concentration ammonia nitrogen wastewater |
| CN116332347B (en) * | 2023-02-10 | 2024-02-06 | 河南城发水务生态技术研究院有限公司 | Method for treating low-concentration ammonia nitrogen wastewater |
| CN117430247A (en) * | 2023-12-06 | 2024-01-23 | 青岛鑫源环保集团有限公司 | Drinking water nitrogen-reducing purifying equipment |
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