CN210855635U - Ammonia nitrogen wastewater treatment equipment - Google Patents
Ammonia nitrogen wastewater treatment equipment Download PDFInfo
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- CN210855635U CN210855635U CN201921421964.8U CN201921421964U CN210855635U CN 210855635 U CN210855635 U CN 210855635U CN 201921421964 U CN201921421964 U CN 201921421964U CN 210855635 U CN210855635 U CN 210855635U
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Abstract
The utility model discloses ammonia nitrogen wastewater treatment equipment, which is characterized by comprising a pipeline mixer, a pH alkali adjusting tank, a primary stripping tower, a secondary stripping tower, a raw material liquid storage tank, a struvite settling tank, a rotary screen and a neutralization tank, wherein the pipeline mixer, the pH alkali adjusting tank, the primary stripping tower, the secondary stripping tower, the raw material liquid storage tank, the struvite settling tank, the rotary screen and the neutralization tank sequentially pass through ammonia nitrogen wastewater; the one-level blows and takes off the tower and all is connected with the tail gas absorption tower with the second grade, the feed solution holding vessel is connected with phosphate storage tank and magnesium salt holding vessel through dosing pump an and dosing pump b respectively, the struvite gunite gunbarrel is through adding medicine tank c connection alkali storage tank, the jar of neutralization is through adding medicine pump d connection acid tank, and waste water can discharge after the jar of neutralization. The utility model discloses equipment design benefit, relative construction cost is low, adopts physics to blow off, chemical precipitation secondary treatment method, handles cleaner, far above emission standard.
Description
Technical Field
The utility model relates to a sewage treatment field, concretely relates to ammonia nitrogen waste water treatment equipment.
Background
At present, with the rapid development and growth of industries such as chemical fertilizers, petrochemical industry and the like, the generated high ammonia nitrogen wastewater also becomes one of the industry development restriction factors; according to the report, red tide occurs up to 77 times in 2001 in China's sea area, ammonia nitrogen is one of important causes of pollution, in particular to pollution caused by high-concentration ammonia nitrogen wastewater. Therefore, the economic and effective control of high concentration pollution is also an important subject of current research by environmental protection workers, and is highly regarded by the industry.
The general formation of ammonia nitrogen wastewater is caused by the coexistence of ammonia water and inorganic ammonia, generally, the main source of ammonia nitrogen in wastewater with pH above neutral is the combined action of inorganic ammonia and ammonia water, and the ammonia nitrogen in wastewater under the acidic condition of pH is mainly caused by inorganic ammonia. The ammonia nitrogen in the wastewater mainly comprises two ammonia nitrogen components, wherein one is formed by ammonia water, and the other is formed by inorganic ammonia, and the other is mainly ammonium sulfate, ammonium chloride and the like.
At present, the treatment method of high-concentration ammonia nitrogen wastewater (1 ten thousand mg/L) generally comprises a physical and chemical method, a biological denitrification method, a biochemical combined method and the like. The physical and chemical methods are mainly divided into a stripping method, a zeolite deamination method, a membrane separation technology, an MAP precipitation method and a chemical oxidation method. The existing high-concentration ammonia nitrogen sewage treatment method has the problems of large early investment and large occupied area, and meanwhile, if the treatment of ammonia nitrogen wastewater needs to reach the discharge standard, more treatment steps are often needed, and the wastewater treatment cost is increased.
Disclosure of Invention
The utility model aims at providing an ammonia nitrogen wastewater treatment equipment for solve prior art ammonia nitrogen treatment cost, the clearance can not reach the standard or just reach the problem of standard, can not satisfy current sewage treatment's requirement.
The utility model adopts the following technical scheme: designing ammonia nitrogen wastewater treatment equipment, which is characterized by comprising a pipeline mixer, a pH alkali adjusting tank, a primary stripping tower, a secondary stripping tower, a raw material liquid storage tank, a struvite precipitation tank, a rotary screen and a neutralization tank, wherein the pipeline mixer, the pH alkali adjusting tank, the primary stripping tower, the secondary stripping tower, the raw material liquid storage tank, the struvite precipitation tank, the rotary screen and the neutralization tank sequentially pass through the ammonia nitrogen wastewater; the one-level stripping tower and the second-level stripping tower are both connected with the tail gas absorption tower, the raw material liquid storage tank is respectively connected with the phosphate storage tank and the magnesium salt storage tank through a dosing pump a and a dosing pump b, the struvite precipitation tank is connected with the alkali storage tank through a dosing tank c, the neutralization tank is connected with the acid tank through a dosing pump d, and waste water can be discharged after passing through the neutralization tank.
Above technical characteristic, the utility model discloses before ammonia nitrogen wastewater treatment, at first carry out alkaline treatment, carry out the regulation of PH, the back two-stage blows and takes off to set up the aeration dish in the below of blowing off the tower and carry out the air and blow off, and two blows off the tower and adopt different aeration flow, make the NH that the reaction produced in the waste water3Is completely blown out, and the blown-out gas is absorbed in the absorption tower. Then, ammonia nitrogen exists in the wastewater, and then the wastewater is subjected to precipitation treatment through magnesium salt and phosphate, so that nitrogen in the ammonia nitrogen wastewater can be further removed, and then biological treatment is performed on struvite by a biological method, wherein the ammonia nitrogen removal rate of the treated wastewater is up to more than 95%, the amount of contained ammonia nitrogen is extremely small, and the discharge standard is higher.
Further, a first air blower and a second air blower are respectively connected outside the primary stripping tower and the secondary stripping tower, and the air volume of the first air blower is 50-70m3H, the air volume of the second blower is 1-10 m3And/h, compared with primary blowing, the gradient blowing is cleaner, so that the blowing efficiency and quality are ensured, and the cost is saved.
Further, the tail gas absorption tower is an absorption tower with a silk screen and a spray head, and an absorption liquid circulating pump is arranged outside the tower.
Further, the tail gas absorption tower passes through the pipe connection absorption liquid holding vessel, be provided with the sample valve on the exhaust duct of tail gas absorption tower for detect the ammonia content of discharging absorption liquid.
Further, the pH alkali adjusting tank, the primary stripping tower, the secondary stripping tower, the raw material liquid storage tank, the struvite precipitation tank, the rotary screen and the neutralization tank are connected through pipelines, a water pump is arranged between every two adjacent devices, and the flow rate of the water pump is 15-25L/H.
The beneficial effects of the utility model reside in that: the utility model discloses equipment design is ingenious, and relative construction cost is low, adopts physics to blow off, chemical precipitation secondary treatment method, handles cleaner, far exceeds emission standard, at first adopts the two-stage to blow off to set up the aeration dish in the below of blowing off the tower and carry out the air and blow off, and two blowing off towers adopt different aeration flow, make the NH that the reaction produced in the waste water3Is blown out more completely; then, ammonia nitrogen exists in the wastewater, and then the precipitation treatment is carried out through magnesium salt and phosphate, so that nitrogen in the ammonia nitrogen wastewater can be further removed; then biological treatment is carried out on the struvite by a biological method, at the moment, the ammonia nitrogen removal rate of the treated wastewater is up to more than 95 percent, the contained ammonia nitrogen is extremely small, and the safety of discharged water is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
reference numerals: 1 is the pipeline mixer, 2 is pH alkali equalizing basin, 3 is the one-level stripping tower, 4 is the second grade stripping tower, 5 is the raw materials liquid holding vessel, 6 is the struvite gunite gunbarrel, 7 is the drum sieve, 8 is the neutralization pond, 9 is the tail gas absorption tower, 10 is dosing pump a, 11 is dosing pump b, 12 is the phosphate storage tank, 13 is the magnesium salt holding vessel, 14 is dosing tank c, 15 is the alkali storage tank, 16 is dosing pump d, 17 is the acid tank, 18 is first air-blower, 19 is the second air-blower, 20 is the absorption liquid circulating pump, 21 is the water pump, 22 is the absorption liquid holding vessel.
Detailed Description
The following examples are provided to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way. The elements of the apparatus referred to in the following examples are conventional elements of the apparatus unless otherwise specified.
Example 1: as shown in fig. 1, an ammonia nitrogen wastewater treatment device is characterized by comprising a pipeline mixer 1, a pH alkali adjusting tank 2, a primary stripping tower 3, a secondary stripping tower 4, a raw material liquid storage tank 5, a struvite precipitation tank 6, a rotary screen 7 and a neutralization tank 8, wherein the pipeline mixer 1, the pH alkali adjusting tank 2, the primary stripping tower 3, the secondary stripping tower 4, the struvite precipitation tank 6 and the neutralization tank 8 are sequentially arranged in sequence; one-level stripping tower 3 and second grade stripping tower 4 all are connected with tail gas absorption tower 9, raw materials liquid holding vessel 5 is connected with phosphate storage tank 12 and magnesium salt holding vessel 13 through dosing pump a10 and dosing pump b11 respectively, struvite gunite gunbarrel 6 is connected alkali storage tank 15 through dosing tank c14, neutralization pond 8 is through dosing pump d16 connection acid tank 17, and waste water can discharge after neutralization pond 8.
In the specific implementation process, the lower parts of the first-stage stripping tower 3 and the second-stage stripping tower 4 are subjected to air stripping by adopting aeration discs, so that the stripping area is increased, and the stripping efficiency is improved.
A first blower 18 and a second blower 19 are respectively connected outside the first stage stripping tower 3 and the second stage stripping tower 4, and the air volume of the first blower 18 is 50-70m3H, the air volume of the second blower 19 is 1-10 m3And/h, compared with primary blowing, the gradient blowing is cleaner, so that the blowing efficiency and quality are ensured, and the cost is saved.
Wherein the gas flow of the first-stage stripping tower is Q =55-65m3The gas flow of the secondary stripping tower is Q =95-105m3And h, converging the gases in the two stripping towers, and then feeding the converged gases into a tail gas absorption tower 9.
The tail gas absorption tower 9 is an absorption tower with a wire mesh and a spray head, and an absorption liquid circulating pump 20 is arranged outside the tower.
The tail gas absorption tower 9 is connected with an absorption liquid storage tank 22 through a pipeline, and a sampling valve is arranged on an exhaust pipeline of the tail gas absorption tower 9 and used for detecting the ammonia content of the exhaust liquid.
The pH alkali adjusting tank 2, the primary stripping tower 3, the secondary stripping tower 4, the raw material liquid storage tank 5, the struvite precipitation tank 6, the drum screen 7 and the neutralization tank 8 are connected through pipelines, a water pump 21 is arranged between every two adjacent devices except the pipeline mixer, and the flow of the water pump 21 is 15-25L/H.
More specifically, pipeline mixer 1, pH alkali equalizing basin 2, one-level are blown and are taken off tower 3, second grade and are blown and take off tower 4, former feed liquid holding vessel 5, struvite gunite precipitation tank 6, drum sieve 7, neutralization pond 8 and are prior art in this field, the utility model discloses a connection relation between each equipment is characterized in to and the position that sets up for the treatment effeciency of ammonia nitrogen waste water mentions more than 95%.
The present invention has been described in detail with reference to the embodiments, but those skilled in the art will understand that the specific parameters in the embodiments can be changed without departing from the spirit of the present invention to form a plurality of specific embodiments, which are the common variation range of the present invention, and the detailed description is omitted here.
Claims (5)
1. An ammonia nitrogen wastewater treatment device is characterized by comprising a pipeline mixer, a pH alkali adjusting tank, a first-stage stripping tower, a second-stage stripping tower, a raw material liquid storage tank, a struvite precipitation tank, a rotary screen and a neutralization tank, wherein the pipeline mixer, the pH alkali adjusting tank, the first-stage stripping tower, the second-stage stripping tower, the raw material liquid storage tank, the struvite precipitation tank, the rotary screen and the neutralization tank are sequentially arranged; the one-level stripping tower and the second-level stripping tower are both connected with the tail gas absorption tower, the raw material liquid storage tank is respectively connected with the phosphate storage tank and the magnesium salt storage tank through a dosing pump a and a dosing pump b, the struvite precipitation tank is connected with the alkali storage tank through a dosing tank c, the neutralization tank is connected with the acid tank through a dosing pump d, and waste water can be discharged after passing through the neutralization tank.
2. The ammonia nitrogen wastewater treatment equipment according to claim 1, wherein a first blower and a second blower are respectively connected outside the primary stripping tower and the secondary stripping tower, and the air volume of the first blower is 50-70m3H, the air volume of the second blower is 1-10 m3/h。
3. The ammonia nitrogen wastewater treatment equipment according to claim 1, wherein the tail gas absorption tower is an absorption tower with a wire mesh and a spray head, and an absorption liquid circulating pump is arranged outside the tower.
4. The ammonia nitrogen wastewater treatment equipment according to claim 3, wherein the tail gas absorption tower is connected with the absorption liquid storage tank through a pipeline, and a sampling valve is arranged on an exhaust pipeline of the tail gas absorption tower and used for detecting the ammonia content of the discharged absorption liquid.
5. The ammonia nitrogen wastewater treatment equipment according to claim 1, wherein the pH alkali adjusting tank, the primary stripping tower, the secondary stripping tower, the raw material liquid storage tank, the struvite precipitation tank, the rotary screen and the neutralization tank are connected through pipelines, a water pump is arranged between every two adjacent devices, and the flow rate of the water pump is 15-25L/H.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921421964.8U CN210855635U (en) | 2019-08-29 | 2019-08-29 | Ammonia nitrogen wastewater treatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921421964.8U CN210855635U (en) | 2019-08-29 | 2019-08-29 | Ammonia nitrogen wastewater treatment equipment |
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| CN210855635U true CN210855635U (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551776A (en) * | 2020-11-17 | 2021-03-26 | 西安净源水处理科技有限公司 | High-concentration ammonia nitrogen wastewater treatment equipment and process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551776A (en) * | 2020-11-17 | 2021-03-26 | 西安净源水处理科技有限公司 | High-concentration ammonia nitrogen wastewater treatment equipment and process |
| CN112551776B (en) * | 2020-11-17 | 2024-02-02 | 西安净源水处理科技有限公司 | High-concentration ammonia nitrogen wastewater treatment equipment and process |
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