CN217578545U - High ammonia nitrogen wastewater treatment system - Google Patents
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- CN217578545U CN217578545U CN202221757977.4U CN202221757977U CN217578545U CN 217578545 U CN217578545 U CN 217578545U CN 202221757977 U CN202221757977 U CN 202221757977U CN 217578545 U CN217578545 U CN 217578545U
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Abstract
According to the high ammonia nitrogen wastewater treatment system, high ammonia nitrogen wastewater firstly enters the flocculation tank to be added with the flocculating agent and the precipitating agent, fine particles in the high ammonia nitrogen wastewater are flocculated and then enter the first sedimentation tank to be kept stand for sedimentation, the fine particles in the high ammonia nitrogen wastewater are removed, and the cleanliness of the high ammonia nitrogen wastewater is improved; and inputting the supernatant into a deamination treatment tank, adding magnesium salt and phosphate into the deamination treatment tank to generate magnesium ammonium phosphate precipitate, removing ammonia nitrogen in the high ammonia nitrogen wastewater, adding a precipitator into the high ammonia nitrogen wastewater, inputting the wastewater mixed with the magnesium ammonium phosphate precipitate and the precipitator into a second precipitation tank, standing, and precipitating and separating the magnesium ammonium phosphate precipitate. The utility model provides a system sets up flocculation basin and first sedimentation tank before the deamination treatment pond, with the solid impurity among the high ammonia nitrogen waste water and other can be got rid of by the impurity of flocculation and sediment, promote the cleanliness factor of high ammonia nitrogen waste water to can get rid of efficiency for improving the ammonia nitrogen and provide the condition, thereby also can promote the purity and the cleanliness factor that the magnesium ammonium phosphate that generates deposits, obtain the magnesium ammonium phosphate that purity is higher and deposit.
Description
Technical Field
The application relates to the technical field of wastewater treatment, in particular to a high ammonia nitrogen wastewater treatment system.
Background
Along with the rapid development of national economy and the continuous improvement of the living standard of people, the production amount of ammonia nitrogen wastewater is increased day by day, the ammonia nitrogen wastewater mainly comes from the fields of food, chemical industry, breeding, pharmacy, refuse landfill and the like, the water eutrophication is aggravated by the discharge of a large amount of ammonia nitrogen wastewater, the ecological environment of the water is seriously damaged, and the living environment of human is harmed.
The existing treatment methods aiming at the high ammonia nitrogen wastewater comprise a stripping method, a biological method, an ion exchange method, a precipitation method and the like. The precipitation method has the advantages of high reaction speed, simple process, no influence of temperature and the like, and the generated magnesium ammonium phosphate precipitate is a high-quality nitrogen fertilizer and is commonly used for treating high-concentration ammonia nitrogen wastewater. The principle of the precipitation method is to add Mg into wastewater containing ammonia nitrogen 2+ And PO 4 3- Ionic agents reacting with NH in the wastewater under alkaline conditions 4+ Reacting to generate insoluble composite salt-magnesium ammonium phosphate precipitate MgNH 4 PO 4 ·6H 2 O (also, struvite sediment) reaches the purpose of removing ammonia nitrogen from the waste water, but in the operation process of the traditional precipitation method, if the high ammonia nitrogen waste is directly subjected to deamination precipitation treatment, solid impurities in the high ammonia nitrogen waste can be precipitated together due to the adsorption on the surface of the magnesium ammonium phosphate sediment, so that the generated magnesium ammonium phosphate sediment has low purity.
SUMMERY OF THE UTILITY MODEL
The application provides a high ammonia-nitrogen concentration effluent disposal system for when solving the sedimentation method and handling high ammonia-nitrogen concentration waste water, directly carry out the deaminization with high ammonia-nitrogen concentration waste water and deposit the processing, the problem that the magnesium ammonium phosphate that produces deposits the low purity.
The application provides a high ammonia-nitrogen concentration effluent disposal system, includes: the device comprises a flocculation tank, a first sedimentation tank, a deamination treatment tank and a second sedimentation tank which are arranged in sequence;
the flocculation tank comprises a first flocculation area and a second flocculation area which are separated by a flocculation tank clapboard, and the bottom of the flocculation tank clapboard is provided with a flocculation Chi Dekong for communicating the first flocculation area with the second flocculation area; a first overflow port is formed in the middle of one side wall of the second flocculation area, and the flocculation tank is communicated with the first sedimentation tank through the first overflow port;
the first flocculation area is also connected with an alkali metering pump, a pH meter and a flocculant metering pump, the pH meter is interlocked with the alkali metering pump, and the second flocculation area is connected with a first precipitant metering pump;
a first overflow groove and a second overflow opening are formed in the upper part of one side wall of the first sedimentation tank, which is far away from the flocculation tank, and the second overflow opening is flush with the inner bottom surface of the first overflow groove; the first sedimentation tank is communicated with the deamination treatment tank through a second overflow port;
the deamination treatment tank comprises a first deamination treatment area and a second deamination treatment area which are separated by a deamination treatment tank partition plate, and a deamination treatment tank bottom hole is formed in the bottom of the deamination treatment tank partition plate and is used for communicating the first deamination treatment area with the second deamination treatment area; a third overflow port is arranged in the middle of one side wall of the second deamination treatment area, and the deamination treatment tank is communicated with the second sedimentation tank through the third overflow port;
the first deamination treatment area is also connected with a phosphate metering pump and a magnesium salt metering pump, and the second deamination treatment area is also connected with a second precipitator metering pump; a second overflow groove and a fourth overflow opening are arranged on the upper part of one side wall of the second sedimentation tank far away from the deamination treatment tank, and the fourth overflow opening is flush with the inner bottom surface of the second overflow groove; the second sedimentation tank is communicated with the oxidation tank through a fourth overflow port;
the oxidation pond comprises a first oxidation area and a second oxidation area which are separated by an oxidation pond partition plate, and the first oxidation area and the second oxidation area are communicated through an oxidation pond overflow port on the upper part of the oxidation pond partition plate;
the oxidation pond is connected with an ozone generator which is used for supplying ozone to the first oxidation area and the second oxidation area.
Optionally, the first sedimentation tank further comprises a first fixing rod with two ends fixed on the top of the first sedimentation tank, and a first guide cylinder with one end fixed on the first fixing rod and the other end provided with an opening close to the tank bottom;
the second sedimentation tank also comprises a second fixed rod fixed at the top of the second sedimentation tank, and a second guide cylinder, one end of which is fixed on the second fixed rod, and the other end of which is provided with an opening close to the bottom of the tank;
the first guide cylinder is connected with the first overflow port through a first guide pipe which is horizontally arranged, and the second guide cylinder is connected with the third overflow port through a second guide pipe which is horizontally arranged.
Optionally, the first guide cylinder is integrally communicated and comprises a cylinder body and an expansion part, one end of the cylinder body is communicated with the atmosphere above the liquid level, the other end of the cylinder body is communicated with the expansion part, and the expansion part is expanded outwards to form a horn shape; the second guide cylinder and the first guide cylinder have the same structure.
Optionally, the flocculation basin still is connected with roots's fan, and roots's fan is connected with the aeration pipe who sets up in the flocculation basin bottom and pass the flocculation basin bottom outlet.
A first stirrer is arranged in the first deamination treatment area, and a second stirrer is arranged in the second deamination treatment area.
Optionally, the flocculation tank is also connected with a pH meter, and the pH meter is connected with an alkali metering pump.
Optionally, the system further comprises a clean water tank, a fifth overflow port is arranged on one side wall of the oxidation tank far away from the second sedimentation tank, the oxidation tank is communicated with the clean water tank through the fifth overflow port, and the fifth overflow port, the fourth overflow port and the oxidation tank overflow port are at the same horizontal height.
Optionally, a liquid outlet is arranged on one side wall of the clean water tank far away from the oxidation tank, and the liquid outlet is connected with the self-control water pump.
Optionally, the clean water tank is connected with a liquid level meter, and the liquid level meter is connected with the self-control water pump.
Optionally, the bottoms of the first sedimentation tank and the second sedimentation tank are inverted cones.
Optionally, a stainless steel mesh coated with titanium oxide is arranged in the first oxidation zone, and activated carbon particles are filled in the second oxidation zone.
The application provides a high ammonia-nitrogen wastewater treatment system sets up flocculation basin and first sedimentation tank before the deamination treatment pond, with the solid impurity among the high ammonia-nitrogen wastewater and other can be got rid of by the impurity of flocculation and sediment, promote the cleanliness factor of high ammonia-nitrogen wastewater to also promote the purity and the cleanliness factor that the magnesium ammonium phosphate that generates deposits, can obtain the higher magnesium ammonium phosphate solid of purity. In addition, because the liquid in the first flocculation area enters the second flocculation area from bottom to top through the flocculation Chi Dekong, the countercurrent mode is favorable for the contact between the flocculated high ammonia nitrogen wastewater and the precipitator and the improvement of the precipitation efficiency of the precipitator; and the wastewater enters the next treatment unit in an overflow mode, so the system also has the advantage of continuously treating the high ammonia nitrogen wastewater.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a high ammonia nitrogen wastewater treatment system provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a first guide shell according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a high ammonia nitrogen wastewater treatment system according to an embodiment of the present application.
Description of reference numerals:
1. a flocculation tank;
101. a first flocculation zone;
102. a second flocculation zone;
103. a flocculation tank clapboard;
104. flocculation Chi Dekong;
105. a first overflow port;
151. an aeration pipe;
11. an alkali dosing pump;
12. a flocculant metering pump;
13. a first precipitant metering pump;
14. a pH meter;
15. a Roots blower;
2. a first sedimentation tank;
201. a first overflow tank;
202. a second overflow port;
203. a first draft tube;
2031. a barrel;
2032. an expansion section;
204. a first draft tube;
205. a first fixing lever;
3. a deamination treatment tank;
301. a first deamination treatment zone;
302. a second deamination zone;
303. a deamination treatment tank clapboard;
304. a bottom hole of the deamination treatment tank;
305. a third overflow port;
31. a phosphate dosing pump;
32. a magnesium salt dosing pump;
33. a second precipitant metering pump;
34. a first stirrer;
35. a second agitator;
4. a first sedimentation tank;
401. a second overflow tank;
402. a fourth overflow port;
403. a second draft tube;
404. a second draft tube;
405. a second fixing bar;
5. an oxidation pond;
501. a first oxidation zone;
502. a second oxidation region;
503. a baffle plate of the oxidation pond;
504. an overflow port of the oxidation pond;
505. a fifth overflow port;
51. ozone generator
6. A clean water tank;
601. a liquid discharge port;
61. a liquid level meter;
62. self-control water pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present application, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, the present application provides a high ammonia nitrogen wastewater treatment system, comprising: the device comprises a flocculation tank 1, a first sedimentation tank 2, a deamination treatment tank 3 and a second sedimentation tank 4 which are arranged in sequence;
the flocculation tank 1 comprises a first flocculation area 101 and a second flocculation area 102 which are separated by a flocculation tank partition 103, and the bottom of the flocculation tank partition 103 is provided with a flocculation tank bottom hole 104 for communicating the first flocculation area 101 and the second flocculation area 102; a first overflow port 105 is arranged in the middle of one side wall of the second flocculation area 102, and the flocculation tank 1 is communicated with the first sedimentation tank 2 through the first overflow port 105;
the first flocculation area 101 is also connected with an alkali metering pump 11, a pH meter 14 and a flocculating agent metering pump 12, the pH meter 14 is interlocked with the alkali metering pump 11, and the second flocculation area is connected with a first precipitator metering pump 13;
the upper part of one side wall of the first sedimentation tank 2 far away from the flocculation tank 1 is provided with a first overflow trough 201 and a second overflow outlet 202, and the second overflow outlet 202 is flush with the inner bottom surface of the first overflow trough 201; the first sedimentation tank 2 is communicated with the deamination treatment tank 3 through a second overflow port 202;
the deamination treatment pool 3 comprises a first deamination treatment area 301 and a second deamination treatment area 302 which are separated by a deamination treatment pool partition plate 303, and the bottom of the deamination treatment pool partition plate 303 is provided with a deamination treatment Chi Dekong which is used for communicating the first deamination treatment area 301 and the second deamination treatment area 302; a third overflow port 305 is arranged in the middle of one side wall of the second deamination treatment area 302, and the deamination treatment tank 3 is communicated with a second sedimentation tank 4 through the third overflow port 305;
the first deamination treatment area 301 is also connected with a phosphate metering pump 31 and a magnesium salt metering pump 32, and the second deamination treatment area 302 is also connected with a second precipitant metering pump 33; a second overflow trough 401 and a fourth overflow opening 402 are arranged on the upper part of one side wall of the second sedimentation tank 4 far away from the deamination treatment tank 3, and the fourth overflow opening 402 is flush with the inner bottom surface of the second overflow trough 401;
in this application, can thoughtlessly have tiny solid particle thing and colloid in the high ammonia nitrogen waste water. In order to obtain and recover magnesium ammonium phosphate sediment (also called struvite sediment) with higher purity by adopting a precipitation method, the flocculation tank 1 is used for removing suspended matters and solid particles in the high ammonia nitrogen wastewater, so that the effluent is clear. Wherein, through pH meter 14 and alkali metering pump 11 interlocking, alkali metering pump 11 is to the internal fixed amount of flocculation basin 1 and adds alkali lye, regulate and control the pH valve of high ammonia nitrogen waste water to 8 ~ 9, this pH valve is the best pH valve that the flocculating agent exert the flocculation effect, flocculating agent metering pump 12 is to adding the flocculating agent to first flocculation area 101, the flocculating agent that uses is for example polyaluminium chloride, alum etc. the main effect of flocculating agent is, the tiny particulate matter flocculation aggregation into great granule in the high ammonia nitrogen waste water is convenient for deposit. A precipitant metering pump 13 adds a precipitant, such as polyacrylamide, to the second flocculation zone 102, which serves to promote the precipitation of flocculated particles. Because the liquid in the first flocculation area 101 enters the second flocculation area 102 from bottom to top through the bottom hole 104 of the flocculation tank, the countercurrent mode is favorable for the contact between the flocculated high ammonia nitrogen wastewater and the precipitant, and the precipitation efficiency of the precipitant is favorably improved. The flocculation tank 1 is used for removing fine particles in the high ammonia nitrogen wastewater, so that high-purity magnesium ammonium phosphate sediment can be obtained in subsequent operation.
The first sedimentation tank 2 is used for precipitating the high ammonia nitrogen wastewater mixed with the flocculating agent and the precipitator, and supernatant of the precipitated high ammonia nitrogen wastewater enters the deamination treatment tank 3 for further treatment.
A deamination treatment tank 3, wherein supernatant of the high ammonia nitrogen wastewater overflowing from the first sedimentation tank 2 enters a first deamination treatment area 301, a phosphate metering pump 31 and a magnesium salt metering pump 32 are utilized to add quantitative phosphate and magnesium salt into the first deamination treatment area 301, for example, the added amount of the magnesium salt and the added amount of the phosphate are respectively 1.2 times and 0.8 time of the ammonia nitrogen molar amount in the high ammonia nitrogen wastewater, and at the moment, NH in the high ammonia nitrogen wastewater 4+ 、Mg 2+ And PO 4 3- The reaction generates insoluble composite salt magnesium ammonium phosphate precipitate MgNH 4 PO 4 ·6H 2 O, the generated precipitate particles are fine, and then the second precipitant metering pump 33 is used for adding a precipitant to promote the generated fine magnesium ammonium phosphate precipitate to be coagulated. Because the liquid in the first deamination treatment area 301 enters the second deamination treatment area 302 from bottom to top through the bottom hole 304 of the deamination treatment tank, the countercurrent mode is favorable for depositing magnesium ammonium phosphate and contacting with a precipitator, and is favorable for improving the precipitation efficiency of the precipitator.
And the second sedimentation tank 4 is used for standing and precipitating the wastewater mixed with magnesium ammonium phosphate and a precipitator from the deamination treatment tank 3, obtaining magnesium ammonium phosphate precipitate at the bottom of the tank, recovering the magnesium ammonium phosphate precipitate to prepare fertilizer, and discharging supernatant out of the system.
The application provides a high ammonia-nitrogen wastewater treatment system sets up flocculation basin 1 and first sedimentation tank 2 before deamination treatment pond 3, with the solid impurity among the high ammonia-nitrogen wastewater and other can be got rid of by the impurity of flocculation and sediment, promote the cleanliness factor of high ammonia-nitrogen wastewater to also promote the purity and the cleanliness factor that the magnesium ammonium phosphate that generates deposits, can obtain the higher magnesium ammonium phosphate solid of purity. In addition, because the liquid in the first flocculation zone 101 enters the second flocculation zone 102 from bottom to top through the bottom hole 104 of the flocculation tank, the countercurrent mode is favorable for the contact between the flocculated high ammonia nitrogen wastewater and the precipitant, and is favorable for improving the precipitation efficiency of the precipitant; and the wastewater enters the next treatment unit in an overflow mode, so the system also has the advantage of continuously treating the high ammonia nitrogen wastewater.
As shown in fig. 2, optionally, the first sedimentation tank 2 further includes a first fixing rod 205 with two ends fixed on the top of the first sedimentation tank 2, and a first guide cylinder 203 with one end fixed on the first fixing rod 205 and the other end provided with an opening close to the bottom of the tank;
the second sedimentation tank 4 further comprises a second fixing rod 405 fixed on the top of the second sedimentation tank 4, and a second guide cylinder 403, one end of which is fixed on the second fixing rod 405, and the other end of which is provided with an opening close to the bottom of the tank;
the first guide cylinder 203 is connected with the first overflow port 105 through a first guide pipe 204 arranged horizontally, and the second guide cylinder 403 is connected with the third overflow port 305 through a second guide pipe 404 arranged horizontally.
In this application, set up the draft tube of opening towards the sedimentation tank bottom, can reduce the torrent that rivers input sedimentation tank brought, be favorable to settling the waste water that will mix there is flocculating agent and precipitant.
As shown in fig. 3, optionally, the first guide cylinder 203 is integrally through and includes a cylinder 2031 and an expansion portion 2032, one end of the cylinder 2031 is higher than the liquid level and is communicated with the atmosphere, the other end is communicated with the expansion portion 2032, and the expansion portion 2032 expands outwards to form a horn shape; the second guide shell 403 and the first guide shell 203 have the same structure.
In this application, first draft tube 203 is used for the high ammonia nitrogen waste water that will mix there are flocculating agent and precipitant, water conservancy diversion to 2 bottoms in first sedimentation tank, reduce the torrent that high ammonia nitrogen waste water directly arouses in getting into first sedimentation tank 2 after to the expansion portion 2032 of first draft tube 203 is favorable to reducing the velocity of flow of the liquid that flows, thereby reduces the torrent, is favorable to subsiding of sediment, promotes precipitation efficiency.
The working principle of the second guide shell 403 is the same as that of the first guide shell 203 in the present application, and the description thereof is omitted.
Optionally, the flocculation tank 1 is further connected with a roots blower 15, and the roots blower 15 is connected with an aeration pipe 151 which is arranged at the bottom of the flocculation tank 1 and passes through the bottom hole 104 of the flocculation tank.
A first stirrer 34 is arranged in the first deamination treatment zone 301, and a second stirrer 35 is arranged in the second deamination treatment zone 302.
In this application, roots's fan 15 is used for to the aeration pipe 151 air feed, utilizes aeration pipe 151 to stir the liquid in first flocculation district 101 and the second flocculation district 102 through the mode of aeration for add alkali lye, flocculating agent and the precipitant dispersion in first flocculation district 101 and the second flocculation district 102 even, promote flocculation and precipitation efficiency.
Set up first agitator 34 and second agitator 35, when adding magnesium salt and phosphate to first deamination treatment zone 301 in, start first agitator 34 for the ammonia nitrogen reaction in magnesium salt and the phosphate and the ammonia nitrogen waste water is more abundant, promotes efficiency and the effect of getting rid of total nitrogen in the high ammonia nitrogen waste water. After the precipitant is added, the second stirrer 35 is started to promote contact between the precipitant and the generated precipitate, thereby improving the precipitation efficiency.
As shown in fig. 3, optionally, the second sedimentation tank 4 is communicated with the oxidation tank 5 through a fourth overflow port 402;
the oxidation pond 5 comprises a first oxidation area 501 and a second oxidation area 502 which are divided by an oxidation pond clapboard 503, and the first oxidation area 501 and the second oxidation area 502 are communicated through an oxidation pond overflow port 504 on the upper part of the oxidation pond clapboard 503;
the oxidation pond 5 is connected to an ozone generator 51 for supplying ozone into the first oxidation zone 501 and the second oxidation zone 502.
Optionally, a stainless steel net coated with titanium oxide is disposed in the first oxidation zone 501, and activated carbon particles are filled in the second oxidation zone 502. In this application, titanium oxide has the catalytic action to ozone oxidation ammonia nitrogen waste water, accelerates the oxidation efficiency of ozone. The characteristics of micropores and mesopores of the activated carbon particles are utilized, so that the oxidation efficiency of ozone can be improved, and the activated carbon particles can be used as an adsorbent to further purify water.
In the application, most ammonia nitrogen in the high ammonia nitrogen wastewater is removed in the form of magnesium ammonium phosphate precipitation through the preposed device, the treated water is wastewater with low-concentration ammonia nitrogen content, ammonia nitrogen in the wastewater is to be removed more thoroughly, then the supernatant needs to be further purified, the oxidation pond 5 is arranged, the ozone generator 51 connected with the oxidation pond 5 is used for supplying ozone to the oxidation pond 5, residual ammonia nitrogen in the wastewater can be oxidized to be further removed, and the ammonia nitrogen is removed more thoroughly.
The oxidation pond 5 is divided into a first oxidation area 501 and a second oxidation area 502 by an oxidation pond partition 503, a stainless steel net coated with titanium oxide is arranged in the first oxidation area 501, activated carbon particles are filled in the second oxidation area 502, and water output from the second sedimentation pond 4 is subjected to two-stage oxidation to further purify the water, so that the cleanliness of the water is improved.
Optionally, the system of the present application further includes a clean water tank 6, a fifth overflow opening 505 is provided on a side wall of the oxidation pond 5 away from the second sedimentation pond 4, the oxidation pond 5 is communicated with the clean water tank 6 through the fifth overflow opening 505, and the fifth overflow opening 505, the fourth overflow opening 402 and the oxidation pond overflow opening 504 are at the same level.
In the present application, the clean water tank 6 is used for temporarily storing the treated clean water, and the treated clean water can be recycled through the clean water tank 6, for example, to a cleaning workshop in a factory.
Optionally, a liquid outlet 601 is arranged on one side wall of the clean water tank 6 far away from the oxidation tank 5, and the liquid outlet 601 is connected with the self-control water pump 62.
Optionally, a liquid level meter 61 is connected to the clean water tank 6, and the liquid level meter 61 is connected to the self-controlled water pump 62.
In the application, the liquid level meter 61 can monitor the height of the water level in the clean water tank 6 and feed back the water level height data to the self-control water pump 62, and when the water level in the clean water tank 6 is higher than a preset water level height, for example, 1m, the self-control water pump 62 is started to discharge the water in the clean water tank 6; when the liquid level in the clean water tank 6 is lower than the preset low level, for example, 20cm, the self-controlled water pump 62 is turned off. The automatic control type water pump 62 is arranged and connected with the liquid level meter 61, water in the clean water tank 6 can be automatically discharged in real time, and the automatic control type water pump has the advantages of being free of manual operation, timely, time-saving and labor-saving.
Optionally, the bottoms of the first sedimentation tank 2 and the second sedimentation tank 4 are inverted conical.
In this application, the sedimentation tank of back taper is favorable to promoting the settlement rate of sediment, still makes things convenient for the sediment to gather here.
The application provides a high ammonia-nitrogen concentration effluent disposal system, its work flow is as follows:
inputting high ammonia nitrogen wastewater into a flocculation tank 1, the high ammonia nitrogen wastewater firstly enters a first flocculation area 101 and then enters a second flocculation area 102 through a flocculation tank bottom hole 104, a pH meter 14 connected with the first flocculation area 101 monitors the pH value of the high ammonia nitrogen wastewater in the flocculation tank 1 and feeds the pH value data back to an alkali metering pump 11, the alkali metering pump 11 quantitatively adds sodium hydroxide solution with the concentration of 30 wt for example into the flocculation tank 1 according to the pH value data fed back by the pH meter 14, and the pH value of the high ammonia nitrogen wastewater in the flocculation tank 1 is controlled between 8 and 9.
Then, a flocculant metering pump 12 quantitatively adds a flocculant such as polyaluminium chloride to the wastewater in the first flocculation zone 101, the high ammonia nitrogen wastewater added with the flocculant enters the second flocculation zone 102, and a precipitator such as polyacrylamide is quantitatively added to the high ammonia nitrogen wastewater in the second flocculation zone 102 by a first precipitator metering pump 13 connected with the second flocculation zone 102.
The flocculation tank 1 is connected with the roots fan 15, and the roots fan 15 is connected with the aeration pipe 151 that sets up in flocculation tank 1 bottom and pass flocculation tank bottom hole 104, and the roots fan 15 supplies with the air in to aeration pipe 151, utilizes the aeration of aeration pipe 151, with the liquid stirring in the flocculation tank 1 for high ammonia nitrogen waste water and alkali in the flocculation tank 1, flocculating agent and precipitant misce bene promote the tiny particulate matter in the high ammonia nitrogen waste water to deposit.
The high ammonia nitrogen wastewater mixed with the precipitator and the flocculating agent enters the first sedimentation tank 2 through the first overflow port 105 and is settled. The supernatant of the precipitated high ammonia nitrogen wastewater enters a first overflow groove 201 in a first sedimentation tank 2 in an overflow mode and then enters a deamination treatment tank 3 through a second overflow port 202.
The supernatant of the high ammonia nitrogen wastewater firstly enters a first deamination treatment area 301, and then enters a second deamination treatment area 302 through a deamination treatment pool bottom hole 304 at the bottom of a deamination treatment pool partition plate 303, a phosphate metering pump 31 and a magnesium salt metering pump 32 which are connected with the first deamination treatment area 301 quantitatively add magnesium salt and phosphate with preset proportion into the first deamination treatment area 301, for example, the added magnesium salt and phosphate are respectively 1.2 times and 0.8 times of the molar amount of ammonia nitrogen in the high ammonia nitrogen wastewater, the magnesium salt and phosphate react with free ammonia nitrogen under the stirring of a first stirrer 34, a large amount of fine magnesium ammonium phosphate precipitates can be generated in the first deamination treatment area 301, and then a quantitative precipitator, such as polyacrylamide, is added into the second deamination treatment area 302 through a second precipitator metering pump 33 which is connected with the second deamination treatment area 302 and stirred by a second stirrer 35, and then the wastewater mixed with the magnesium ammonium phosphate precipitates and the precipitator enters a second sedimentation overflow pool 4 through a second sedimentation overflow port 305.
The waste water mixed with the magnesium ammonium phosphate precipitate and the precipitator is kept stand and precipitated in the second sedimentation tank 4, and the supernatant enters the second overflow tank 401 through an overflow mode and then enters the oxidation tank 5 through the fourth overflow port 402.
The supernatant fluid entering the oxidation pond 5 firstly enters the first oxidation area 501, the stainless steel mesh coated with titanium oxide is arranged in the first oxidation area 501, the activated carbon particles are filled in the second oxidation area 502, and the titanium oxide has a catalytic action on the ozone oxidation ammonia nitrogen wastewater to accelerate the oxidation efficiency of ozone. The characteristic of the micropores of the activated carbon particles can improve the oxidation efficiency of ozone, and can adsorb impurities to further purify water. The supernatant fluid entering the oxidation pond 5 is oxidized for the first time by the ozone supplied by the ozone generator 51, then overflows into the second oxidation area 502 through the oxidation pond overflow port 504 on the oxidation pond partition 503, and is discharged to the clean water pond 6 through the fifth overflow port 505 after being oxidized for the second time by the ozone supplied by the ozone generator 51.
The water after oxidation treatment in the oxidation pond 5 is transferred into the clean water pond 6, a liquid outlet 601 is formed in one side wall, far away from the oxidation pond 5, of the clean water pond 6, the liquid outlet 601 is connected with the automatic control type water pump 62, the automatic control type water pump 62 is used for discharging the water in the clean water pond 6 through the liquid outlet 601, the clean water pond 6 is further connected with the liquid level meter 61, the liquid level meter 61 is connected with the automatic control type water pump 62, the liquid level meter 61 feeds the water level height in the clean water pond 6 back to the automatic control type water pump 62, when the liquid level in the clean water pond 6 is higher than the preset water level height, the automatic control type water pump 62 is started to discharge the water in the clean water pond 6, and if the liquid level in the clean water pond 6 is lower than the preset water level height, the automatic control type water pump 62 is turned off to stop discharging the water.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A high ammonia nitrogen wastewater treatment system is characterized by comprising a flocculation tank (1), a first sedimentation tank (2), a deamination treatment tank (3) and a second sedimentation tank (4) which are arranged in sequence;
the flocculation tank (1) comprises a first flocculation area (101) and a second flocculation area (102), and the first flocculation area (101) is communicated with the second flocculation area (102) through a flocculation Chi Dekong (104) at the bottom of a flocculation tank clapboard (103); the flocculation tank (1) is communicated with the first sedimentation tank (2) through a first overflow port (105) at the upper part of one side wall;
the first flocculation area (101) is also connected with an alkali metering pump (11), a pH meter (14) and a flocculant metering pump (12), the pH meter (14) is interlocked with the alkali metering pump (11), and the second flocculation area (102) is connected with a first precipitant metering pump (13);
the first sedimentation tank (2) is communicated with the deamination treatment tank (3) through a second overflow port (202) at the upper part of one side part, and a first overflow groove (201) is arranged beside the second overflow port (202);
the deamination treatment tank (3) comprises a first deamination treatment area (301) and a second deamination treatment area (302), wherein the first deamination treatment area (301) is communicated with the second deamination treatment area (302) through a deamination treatment tank bottom hole (304) at the bottom of a deamination treatment tank partition plate (303); the deamination treatment tank (3) is communicated with the second sedimentation tank (4) through a third overflow port (305) at the upper part of one side wall;
the first deamination treatment area (301) is also connected with a phosphate metering pump (31) and a magnesium salt metering pump (32), and the second deamination treatment area (302) is also connected with a second precipitator metering pump (33); and a second overflow trough (401) and a fourth overflow opening (402) are arranged on the upper part of one side wall of the second sedimentation tank (4) far away from the deamination treatment tank (3).
2. The high ammonia nitrogen wastewater treatment system according to claim 1, wherein the first sedimentation tank (2) and the second sedimentation tank (4) each comprise: the device comprises a fixed rod and a guide cylinder, wherein two ends of the fixed rod are fixed at the top of the pool, one end of the guide cylinder is fixed on the fixed rod, and the other end of the guide cylinder is provided with an opening close to the bottom of the pool;
the guide cylinder is connected with the first overflow port (105) or the third overflow port (305) through a guide pipe which is horizontally arranged.
3. The high ammonia nitrogen wastewater treatment system as set forth in claim 2, wherein the draft tube comprises a tube body and an expansion part, one end of the tube body is communicated with the atmosphere, the other end is communicated with the expansion part, and the expansion part is expanded downwards to form a trumpet shape.
4. The high ammonia nitrogen wastewater treatment system as set forth in claim 1, wherein the flocculation tank (1) is further connected with a Roots blower (15), and the Roots blower (15) is connected with an aeration pipe (151) which is arranged at the bottom of the flocculation tank (1) and passes through the flocculation Chi Dekong (104);
a first stirrer (34) is arranged in the first deamination processing area (301), and a second stirrer (35) is arranged in the second deamination processing area (302).
5. The high ammonia-nitrogen wastewater treatment system according to claim 1, wherein the second sedimentation tank (4) is communicated with the oxidation tank (5) through the fourth overflow port (402);
the oxidation pond (5) comprises a first oxidation area (501) and a second oxidation area (502) which are divided by an oxidation pond clapboard (503) with an oxidation pond overflow port (504) arranged at the upper part;
the oxidation pond (5) is connected with an ozone generator (51).
6. The high ammonia nitrogen wastewater treatment system according to claim 5, characterized in that the system further comprises a clean water tank (6), and a fifth overflow port (505) is arranged on one side wall of the oxidation tank (5) far away from the second sedimentation tank (4); the oxidation pond (5) is communicated with the clean water pond (6) through the fifth overflow port (505);
the fifth overflow port (505), the fourth overflow port (402) and the oxidation pond overflow port (504) are on the same level.
7. The high ammonia nitrogen wastewater treatment system according to claim 6, characterized in that a liquid outlet (601) is arranged on one side wall of the clean water tank (6) far away from the oxidation tank (5), and the liquid outlet (601) is connected with a self-control water pump (62).
8. The high ammonia nitrogen wastewater treatment system according to claim 7, characterized in that the clean water tank (6) is connected with a liquid level meter (61), and the liquid level meter (61) is connected with the self-control water pump (62).
9. The high ammonia nitrogen wastewater treatment system according to any one of claims 1-8, wherein the bottoms of the first sedimentation tank (2) and the second sedimentation tank (4) are inverted cone-shaped.
10. The high ammonia nitrogen wastewater treatment system according to claim 5, characterized in that a stainless steel net coated with titanium oxide is arranged in the first oxidation zone (501), and activated carbon particles are filled in the second oxidation zone (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221757977.4U CN217578545U (en) | 2022-07-08 | 2022-07-08 | High ammonia nitrogen wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221757977.4U CN217578545U (en) | 2022-07-08 | 2022-07-08 | High ammonia nitrogen wastewater treatment system |
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| Publication Number | Publication Date |
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| CN217578545U true CN217578545U (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221757977.4U Active CN217578545U (en) | 2022-07-08 | 2022-07-08 | High ammonia nitrogen wastewater treatment system |
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| Country | Link |
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| CN (1) | CN217578545U (en) |
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