CN103319027A - Device and method for treatment and recovery of nitrogen and phosphorus in wastewater by utilizing seawater desalination concentrate - Google Patents
Device and method for treatment and recovery of nitrogen and phosphorus in wastewater by utilizing seawater desalination concentrate Download PDFInfo
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- CN103319027A CN103319027A CN2013102755213A CN201310275521A CN103319027A CN 103319027 A CN103319027 A CN 103319027A CN 2013102755213 A CN2013102755213 A CN 2013102755213A CN 201310275521 A CN201310275521 A CN 201310275521A CN 103319027 A CN103319027 A CN 103319027A
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Abstract
The invention provides a device and a method for treatment and recovery of nitrogen and phosphorus in wastewater by utilizing a seawater desalination concentrate. The device comprises a housing, wherein an inclined plate settling device and a clear water outlet are arranged at the upper part of the housing, a water inlet pipe is arranged at the lower part of the housing, a diversion plate for segmenting a housing channel into a diversion area and a circulation area is arranged in the housing, a baffle plate is arranged above the diversion area, a sedimentation area is arranged above the baffle plate, an outlet of the water inlet pipe is opposite to the bottom of the diversion area, an inlet of the water inlet pipe is connected with sewage and the concentrated wastewater produced by desalination of seawater, a sludge hopper and a sludge discharge pipe are arranged at the bottom of the housing, and a first circulation pump is arranged between the sludge discharge pipe and the water inlet pipe. The invention relates to the device and the method for nitrogen removal, phosphorus removal and recovery of the nitrogen and the phosphorus by taking a technology of using the concentrated wastewater produced by desalination of the seawater and reutilizing the reaction with phosphate ions to generate magnesium ammonium phosphate and hydroxyapatite crystals to achieve the recovery of the nitrogen and the phosphorus as the core, so that the treatment problem of the concentrated wastewater produced by a seawater desalination device can be solved, and the waste of resources and energy consumption can be further reduced.
Description
Technical field
What the present invention relates to is a kind of waste disposal plant, and what the present invention also relates to is a kind of sewage water treatment method.Specifically utilize the sea water desaltination concentrated solution to process the device and method of nitrogen phosphorus in the waste water.
Background technology
In numerous water pollution problemss that the world today faces, body eutrophication is the human great environmental problem of puzzlement always.Owing to being rich in a large number the discharging of the nutritive substances such as ammonia nitrogen, phosphoric acid salt, algae in rivers and lakes and the ocean and other planktonic organisms are able to rapid amount reproduction, cause " wawter bloom " or " red tide " to break out, the fishes and shrimps mortality, deterioration in various degree occurs in water quality.Not only cause huge financial loss to industrial and agricultural production, but also can reduce rivers and lakes, ocean and littoral diversity of organism, the serious threat peripheral region mankind's health.Because the water bodys such as rivers and lakes and ocean are very complicated dynamic systems, nutritive substance source complex, this has brought difficulty just for the control source of pollution.Up to now, we also do not find single biology, chemistry or the physical measure that can thoroughly remove nitrogen in the waste water, phosphorus, the measure of fundamentally controlling body eutrophication is the loads of nutrition that reduces the water bodys such as input rivers and lakes and ocean, and nitrogen phosphorus is the limiting factor of body eutrophication.Therefore, research and development high-efficient denitrification and dephosphorization technology and be the key of administering body eutrophication with the reuse of nitrogen phosphorus.
And after the 1950's; desalination technology is along with the aggravation of water resources crisis has obtained accelerated development; in more than the 20 kind of desalination techniques of having developed; distillation method, electroosmose process, reverse osmosis method have all reached the level that industrial scale is produced; and in widespread use all over the world; it is marine that but the concentrated waste water that sea water desalinating plant produces but directly flows back to often, do not effectively utilized, and caused the significant wastage of resource.Therefore, research and develop the concentrated waste water reutilization technology that a kind of sea water desalinating plant produces, the resources such as magnesium calcium in the concentrated waste water are carried out economy, effectively utilized is a brand-new problem.
Summary of the invention
The object of the present invention is to provide a kind of advanced treatment that can realize nitrogen-phosphorus wastewater, finish phosphorus and reclaim, the device of nitrogen phosphorus in the waste water is processed and reclaimed to the sea water desaltination concentrated solution that utilizes that can also solve the processing problem of the concentrated waste water that sea water desaltination produces simultaneously.The present invention also aims to provide a kind of method of utilizing the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water.
The object of the present invention is achieved like this:
The device that utilizes the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water of the present invention comprises housing, the top of housing is provided with inclined plate sedimentation device and clear water output, the bottom of housing is provided with water inlet pipe, enclosure interior is provided with the flow deflector that shell channel is divided into guiding region and race way, the top of guiding region arranges baffle plate, the top of baffle plate is the negative area, the outlet of water inlet pipe is relative with the guiding region bottom, the thickened waste water that the import of water inlet pipe connects sewage and sea water desaltination generation connects, housing bottom arranges sludge bucket and shore pipe, and the first recycle pump is set between shore pipe and the water inlet pipe.
The device that utilizes the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water of the present invention can also comprise:
1, case top arranges triphase separator.
2, arrange between described race way and the negative area the second recycle pump that sewage is returned the race way is located in the negative area.
The method of utilizing the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water of the present invention is:
To mix with the concentrated waste water that sea water desaltination produces through the sewage after pre-treatment and the adjusting pH value, making two kinds of metallic cations of magnesium calcium and the total nitrogen mol ratio of mixed solution is 1～1.5:1, total nitrogen and total phosphorus mol ratio are 1:1～1.5, mixed solution is by squeezing in the water inlet pipe by sump pump 3, form jet at a high speed and enter into guiding region, original crystal hybrid reaction in mixed solution and the reactor, by stopping and guide functions of guiding region top flap, mixed solution leaves guiding region and enters the race way, crystalline deposit is in sludge bucket, the first recycle pump periodic running, shore pipe intermittent type spoil disposal, a sewage part enters guiding region again in the race way, a part upwards enters the negative area, and the sewage that enters the negative area carries out solid-liquid separation through inclined plate sedimentation device, and treated sewage is finally discharged through the Graceful mouth of a river.
The method of utilizing the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water of the present invention can also comprise:
1, the ammonia that produces in the reactor is collected by triphase separator, and shore pipe is discharged is rich in nitrogen magnesium phosphorus and a small amount of calcium crystallization as fertilizer.
2, the second recycle pump is set between described race way and the negative area, the second recycle pump is located sewage with the negative area and is returned the race way.
3, described the first recycle pump periodic running refers to that every operation 10min stops 20min.
4, described shore pipe intermittent type spoil disposal refers to that every 6h carries out spoil disposal one time.
The invention provides a kind of concentrated waste water reutilization technology and phosphate anion reaction generation magnesium ammonium phosphate (MAP), calcium phosphate powder (HAP) crystallization that produces take sea water desaltination and reach nitrogen phosphorus recovery technology as denitrogenation dephosphorizing and nitrogen and phosphorus recovery device and the method for core, the processing problem of the concentrated waste water of sea water desalinating plant generation not only can be solved, and the waste of resource and energy consumption can be reduced.
The principle of technical scheme of the present invention is:
The magnesium calcium ion that is rich in the concentrated waste water that utilizes sea water desaltination to produce and the reaction of the ammonium ion in the sewage generate the MAP crystallization, and the calcium ion in the concentrated waste water also can generate a small amount of HAP crystallization with the phosphate anion reaction simultaneously.By flow deflector and baffle plate are set, both can realize the short mix of concentrated black water, fast reaction speed, the jet, the barrier effect of baffle plate and the setting of the first recycle pump that form by the water inlet pipe place simultaneously, can in reactor, form a large race way, promote mixed solution and generate contacting of MAP, HAP crystal that the growth of quickening crystal can need not to add in advance MAP, the HAP crystal can reach efficient removal efficiency of nitrogen and phosphorus when reactor moves.Inclined plate sedimentation device then can further improve the separation of MAP, HAP crystal, and triphase separator is responsible for collecting the ammonia of generation, and sludge bucket can be realized the recycling of MAP, HAP crystal.
The present invention has not only reached the purpose of nitrogen-phosphorus wastewater advanced treatment and the recovery of nitrogen phosphorus, and has solved the processing problem of the concentrated waste water of sea water desalinating plant generation, can reduce the consumption of the energy simultaneously, can be used for the nitrogen phosphorus waste water of advanced treatment coastland.
Description of drawings
Accompanying drawing is the structural representation of denitrogenation dephosphorizing of the present invention and nitrogen and phosphorus recovery device.
Embodiment
The below is for a more detailed description to the present invention for example:
By reference to the accompanying drawings, the device that utilizes the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water of the present invention comprises housing, the top of housing is provided with inclined plate sedimentation device 13 and clear water output 15, the bottom of housing is provided with water inlet pipe 4, enclosure interior is provided with the flow deflector 5 that shell channel is divided into guiding region 6 and race way 8, the top of guiding region arranges baffle plate 7, the top of baffle plate is negative area 12, the outlet of water inlet pipe is relative with the guiding region bottom, the thickened waste water pipe 2 that the import of water inlet pipe connects waste pipe 1 and sea water desaltination generation enters projecting device with sewage by pump 3, housing bottom arranges sludge bucket 9 and shore pipe 10, the first recycle pump 11 is set between shore pipe and the water inlet pipe, and case top arranges triphase separator 14.Can also arrange between race way and the negative area the second recycle pump that sewage is returned the race way is located in the negative area.
Utilize the first embodiment that utilizes the sea water desaltination concentrated solution to process and reclaim the treatment process of the device of nitrogen phosphorus in the waste water of the present invention to be: will be through pre-treatment and with the sewage after the NaOH adjusting pH value, the concentrated waste water that produces with the desalination of chemical feed pipe 2 maritime interior waters mixes, making two kinds of metallic cations of mixed solution magnesium calcium and total nitrogen mol ratio is 1～1.5:1, total nitrogen and total phosphorus mol ratio are 1:1～1.5, squeeze in the water inlet pipe 4 by sump pump 3, form jet at a high speed and enter into semi-cylindrical guiding region 6, original crystal short mix reaction in mixed solution and the reactor, by stopping and guide functions of guiding region 6 top flap 7, mixed solution leaves guiding region 6 and enters race way 8, crystalline deposit is in sludge bucket 9, the first recycle pump 11 periodic runnings, every operation 10min stops 20min, shore pipe 10 every 6h carry out spoil disposal one time, race way 8 interior sewage parts enter guiding region 6 again, a part upwards enters negative area 12, realize efficient solid-liquid separation through inclined plate sedimentation device 13, inclined plate sedimentation device 13 every 30d clean once, the ammonia that produces in the reactor can be collected by triphase separator 14, treated sewage is finally discharged through the Graceful mouth of a river, enters marine.Shore pipe 10 is discharged crystallization and is rich in nitrogen magnesium phosphorus and a small amount of calcium, can be used for the fertilizer in farmland and gardens after the processing.
The second embodiment is: on the basis of the first embodiment, add the second recycle pump between race way 8 and negative area 12, negative area 12 place's sewage are returned race way 8.
The third embodiment is: on the basis of the first or the second embodiment, the medicament of regulating the pH employing is CaO.
The 4th kind of embodiment is: on the basis of above-mentioned any one embodiment, the initial launch stage, recycle pump 11 can continuous service and cuts out shore pipe, two kinds of metallic cations of mixed solution magnesium calcium and total nitrogen mol ratio can be brought up to and be 1.8:1, and total nitrogen and total phosphorus mol ratio can be reduced to 1:1.8.
The 5th kind of embodiment is: on the basis of above-mentioned any one embodiment, total nitrogen and total phosphorus mol ratio be during greater than 1:1, can add phosphoric acid salt before adding the concentrated waste water that sea water desalinating plant produces and regulate.
Claims (8)
1. device that utilizes the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water, comprise housing, the top of housing is provided with inclined plate sedimentation device and clear water output, the bottom of housing is provided with water inlet pipe, it is characterized in that: enclosure interior is provided with the flow deflector that shell channel is divided into guiding region and race way, the top of guiding region arranges baffle plate, the top of baffle plate is the negative area, the outlet of water inlet pipe is relative with the guiding region bottom, the thickened waste water that the import of water inlet pipe connects sewage and sea water desaltination generation connects, housing bottom arranges sludge bucket and shore pipe, and the first recycle pump is set between shore pipe and the water inlet pipe.
2. the device that utilizes the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water according to claim 1, it is characterized in that: case top arranges triphase separator.
3. the device that utilizes the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water according to claim 1 and 2 is characterized in that: arrange between described race way and the negative area the second recycle pump that sewage is returned the race way is located in the negative area.
4. the method for nitrogen phosphorus in the waste water is processed and reclaimed to the sea water desaltination concentrated solution that utilizes that installs as claimed in claim 1, it is characterized in that: will mix with the concentrated waste water that sea water desaltination produces through the sewage after pre-treatment and the adjusting pH value, making two kinds of metallic cations of magnesium calcium and the total nitrogen mol ratio of mixed solution is 1～1.5:1, total nitrogen and total phosphorus mol ratio are 1:1～1.5, mixed solution is by squeezing in the water inlet pipe by sump pump 3, form jet at a high speed and enter into guiding region, original crystal hybrid reaction in mixed solution and the reactor, by stopping and guide functions of guiding region top flap, mixed solution leaves guiding region and enters the race way, crystalline deposit is in sludge bucket, the first recycle pump periodic running, shore pipe intermittent type spoil disposal, a sewage part enters guiding region again in the race way, a part upwards enters the negative area, the sewage that enters the negative area carries out solid-liquid separation through inclined plate sedimentation device, and treated sewage is finally discharged through the Graceful mouth of a river.
5. the method for utilizing the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water according to claim 4, it is characterized in that: the ammonia that produces in the reactor is collected by triphase separator, and shore pipe is discharged is rich in nitrogen magnesium phosphorus and a small amount of calcium crystallization as fertilizer.
6. according to claim 4 or the 5 described methods of utilizing the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water, it is characterized in that: the second recycle pump is set between described race way and the negative area, and the second recycle pump is located sewage with the negative area and is returned the race way.
7. according to claim 4 or the 5 described methods of utilizing the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water, it is characterized in that: described the first recycle pump periodic running refers to that every operation 10min stops 20min; Described shore pipe intermittent type spoil disposal refers to that every 6h carries out spoil disposal one time.
8. the method for utilizing the sea water desaltination concentrated solution to process and reclaim nitrogen phosphorus in the waste water according to claim 6, it is characterized in that: described the first recycle pump periodic running refers to that every operation 10min stops 20min; Described shore pipe intermittent type spoil disposal refers to that every 6h carries out spoil disposal one time.
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| CN201310275521.3A CN103319027B (en) | 2013-07-03 | 2013-07-03 | Device and method for treatment and recovery of nitrogen and phosphorus in wastewater by utilizing seawater desalination concentrate |
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| CN201310275521.3A CN103319027B (en) | 2013-07-03 | 2013-07-03 | Device and method for treatment and recovery of nitrogen and phosphorus in wastewater by utilizing seawater desalination concentrate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107720959A (en) * | 2017-11-23 | 2018-02-23 | 青岛理工大学 | A kind of gas-liquid-solid three-phase separator |
| CN108569684A (en) * | 2018-03-05 | 2018-09-25 | 山东和生海洋科技有限公司 | The method for producing ammonium magnesium phosphate using seawater or bittern water |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0311763A2 (en) * | 1987-10-12 | 1989-04-19 | Passavant-Werke Ag | Sedimentation tank for water and waste water purification |
| US5605636A (en) * | 1995-04-20 | 1997-02-25 | Mcnish Corporation | Liquid clarification device and method |
| US5707523A (en) * | 1995-04-28 | 1998-01-13 | Temple; Stephen R. | Dynamic vertical solids separator |
| CN2330649Y (en) * | 1998-04-24 | 1999-07-28 | 张行赫 | Mud-dreg separating contact type clarification tank |
| CN201245503Y (en) * | 2008-08-08 | 2009-05-27 | 康升环保(天津)有限公司 | Multi-cycle efficient anaerobic waste water treating device |
| CN101723345A (en) * | 2010-01-05 | 2010-06-09 | 大连理工大学 | Method for recovering phosphorus from phosphorus containing sludge |
| CN201643809U (en) * | 2010-04-13 | 2010-11-24 | 常州江南电力环境工程有限公司 | Inclined plate type mechanical agitating clarifier |
-
2013
- 2013-07-03 CN CN201310275521.3A patent/CN103319027B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0311763A2 (en) * | 1987-10-12 | 1989-04-19 | Passavant-Werke Ag | Sedimentation tank for water and waste water purification |
| US5605636A (en) * | 1995-04-20 | 1997-02-25 | Mcnish Corporation | Liquid clarification device and method |
| US5707523A (en) * | 1995-04-28 | 1998-01-13 | Temple; Stephen R. | Dynamic vertical solids separator |
| CN2330649Y (en) * | 1998-04-24 | 1999-07-28 | 张行赫 | Mud-dreg separating contact type clarification tank |
| CN201245503Y (en) * | 2008-08-08 | 2009-05-27 | 康升环保(天津)有限公司 | Multi-cycle efficient anaerobic waste water treating device |
| CN101723345A (en) * | 2010-01-05 | 2010-06-09 | 大连理工大学 | Method for recovering phosphorus from phosphorus containing sludge |
| CN201643809U (en) * | 2010-04-13 | 2010-11-24 | 常州江南电力环境工程有限公司 | Inclined plate type mechanical agitating clarifier |
Non-Patent Citations (2)
| Title |
|---|
| 武均均 等: "海水利用废水反应条件对MAP除磷效能的影响", 《水处理技术》 * |
| 贺君 等: "海水MAP法去除N、P废水实验研究", 《环境科学与管理》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107720959A (en) * | 2017-11-23 | 2018-02-23 | 青岛理工大学 | A kind of gas-liquid-solid three-phase separator |
| CN107720959B (en) * | 2017-11-23 | 2020-08-04 | 青岛理工大学 | Gas-liquid-solid three-phase separator |
| CN108569684A (en) * | 2018-03-05 | 2018-09-25 | 山东和生海洋科技有限公司 | The method for producing ammonium magnesium phosphate using seawater or bittern water |
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