CN103288242A - Ammonia nitrogen wastewater treatment method - Google Patents
Ammonia nitrogen wastewater treatment method Download PDFInfo
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- CN103288242A CN103288242A CN2013102447566A CN201310244756A CN103288242A CN 103288242 A CN103288242 A CN 103288242A CN 2013102447566 A CN2013102447566 A CN 2013102447566A CN 201310244756 A CN201310244756 A CN 201310244756A CN 103288242 A CN103288242 A CN 103288242A
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- waste water
- ammonia nitrogen
- baffle plate
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Abstract
The invention relates to an ammonia nitrogen wastewater treatment method. The method particularly comprises: continuously inletting ammonia nitrogen wastewater into an integrated wastewater treatment device, adding magnesium salts and phosphate salts, fully stirring, separating, directly pumping the separated wastewater by a water pump, and intermittently discharging sediments by a filter press. The method simplifies the separation process, shortens the separation time, and saves the procedures.
Description
Technical field
The present invention relates to a kind of ammonia nitrogen waste water treatment method, belong to the Industrial Wastewater Treatment field.
Background technology
The mode that present sewage work adopts chemical precipitation method to combine with membrane separation technique is usually handled ammonia nitrogen waste water, a whole set of Waste Water Treatment comprises numerous equipment such as reaction tank, separate tank, settling tank, floor space is very big, and the connection line between the equipment is owing to waste residue deposition in the life-time service process, well damage, cause easily run to leak and phenomenon such as emit, increase the composition burden.In order to overcome this phenomenon, there is bibliographical information that reaction tank and separate tank are integrated, finish chemical precipitation reaction and sepn process by a pond, but this treatment effect is unsatisfactory, the reaction of former water is insufficient, and part of contaminated water has neither part nor lot in reaction and directly discharged, and the struvite precipitation that generates during successive reaction is often stopped up fenestra, cause membrane flux to descend, influence ammonia nitrogen removal efficient.Therefore, provide a kind of effective ammonia nitrogen waste water treatment method significant.
Summary of the invention
The purpose of this invention is to provide a kind of ammonia nitrogen waste water treatment method.
To achieve these goals, the present invention adopts following technical scheme:
A kind of ammonia nitrogen waste water treatment method is specially in the integral type wastewater treatment equipment and feeds ammonia nitrogen waste water continuously, adds magnesium salts and phosphoric acid salt simultaneously, fully stirs, separates, and the waste water after the separation is directly extracted out by water pump, and throw out is then intermittently discharged by pressure filter.
Wherein, described magnesium salts, phosphoric acid salt all adopt commercially available chemical reagent.Magnesium salts is preferably Magnesium dichloride hexahydrate, and phosphoric acid salt is preferably disodium hydrogen phosphate dodecahydrate.
Described integral type wastewater treatment equipment is a fountain square, is provided with the overflow unit in the middle of it, thereby the pond is divided into reaction tank and separate tank, and two pond volumes are basic identical; Top, reaction tank side is provided with waterwater entrance and medicament adds mouth; Reaction tank inside is provided with agitator; Separate tank inside is provided with the flat sheet membrane separator; The waste water that sees through flat sheet membrane is extracted out by water pump, and the throw out of generation deposits to the separate tank bottom and intermittently discharged by pressure filter.
Described overflow unit comprises baffle plate 1 and baffle plate 2, and baffle plate 2 is positioned at baffle plate 1 right side; Wherein baffle plate 1 one ends are fixed on the reaction tank top, and the other end is the 1/10-1/5 of pond height to the reaction tank distance from bottom; Baffle plate 2 one ends are fixed on the separate tank bottom, and the other end is the 1/4-1/3 of pond height to the separate tank distance from top; Baffle plate 1 is 1/10 of pond length with baffle plate 2 spacings.According to being communicated with principle, when the waste water liquid level in the reaction tank reach a certain height, the waste water in the reaction tank can overflow in the separate tank via baffle plate 1 bottom, baffle plate 2 tops.The material of described baffle plate 1, baffle plate 2 is synthetic glass or steel plate.
The surface-area of described flat sheet membrane is 0.1m
2, membrane pore size is 0.05-0.2 μ m, membrane flux is 20-300L/m
2H, the volume of flat sheet membrane separator are 0.5-6.5L.
Because flat sheet membrane is used for a long time, the surface can be stopped up by struvite, influences separating effect, and the struvite that the aerator that arranges in flat sheet membrane separator bottom can impel the flat sheet membrane surface to stop up constantly comes off, and remains good semipermeability, and aeration rate is 5-15m
3/ m
2H.Waste water and struvite constantly seethe owing to aeration in addition, are conducive to waste water further purify, and improve nitrogen-removing rate.
Be convenient struvite and other precipitations of collecting, separate tank bottom design funnel shaped in an inverted cone is convenient to throw out and is discharged smoothly.When struvite and other precipitations were discharged via the pressure filter compression, pressing filtering liquid can also be recycled to reclaim in the separate tank again and separate.
In the present invention, ammonia nitrogen waste water and magnesium salts, phosphoric acid salt stir fully to mix down and generate struvite, enter in the separate tank through baffle plate 1 bottom, baffle plate 2 tops smoothly in order to ensure the waste water that contains struvite, and stirring velocity is controlled at 100-1000rpm.
In order to obtain better technique effect, to handle main object be pH8-10 to ammonia nitrogen waste water among the present invention, and COD concentration is 50-1500mg/L, and the ammonia nitrogen concentration scope is the waste water of 100-2000mg/L.It is 0.3-50t/h that described ammonia nitrogen waste water feeds measuring.It is 0.3-0.72t/h that waste water after the separation is extracted speed out.
The present invention utilizes a pair of baffle plate that shifts to install up and down that wastewater treatment equipment is divided into reaction tank, two parts of separate tank, by the control stirring velocity, make struvite to be suspended in the waste water, and enter into separate tank via the foot passage of baffle plate 1, the upper channel of baffle plate 2; The recycling flat sheet membrane is carried out solid-liquid and is effectively separated, and the waste water that sees through flat sheet membrane is extracted out via water pump and gone, and the struvite that is deposited in separate tank back taper funnel is then intermittently got rid of by pressure filter.Be implemented in the recovery of chemical precipitation in the same device, separation and struvite, improved ammonium ion clearance and the struvite rate of recovery.The present invention simplifies sepn process, shortens disengaging time, the saving program.
Description of drawings
Fig. 1 ammonia nitrogen waste water treatment unit of the present invention synoptic diagram.
Fig. 2 is wastewater treatment equipment in the prior art.
Among Fig. 1: 1, reaction tank; 2, agitator; 3, separate tank; 4, flat sheet membrane separator; 5, aerator; 6, pressure filter; 7, baffle plate 1; 8, baffle plate 2.
Embodiment
Following mask body accompanying drawings ammonia nitrogen waste water treatment method of the present invention.
Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Integral type wastewater treatment equipment of the present invention is a pond, is provided with that the overflow unit is divided into reaction tank 1 with the pond and separate tank 3, two pond volumes are basic identical in the middle of it; The reaction tank top is provided with waterwater entrance and medicament adds mouth, and inside is provided with agitator 2;
Described overflow unit comprises baffle plate 1 and baffle plate 2, and baffle plate 2 is positioned at baffle plate 1 right side; Wherein baffle plate 1 one ends are fixed on the reaction tank top, and the other end is the 1/10-1/5 of pond height to the reaction tank distance from bottom; Baffle plate 2 one ends are fixed on the separate tank bottom, and the other end is the 1/4-1/3 of pond height to the separate tank distance from top; Baffle plate 1 is 1/10 of pond length with baffle plate 2 spacings.According to being communicated with principle, when the waste water liquid level in the reaction tank reach a certain height, the top overflow that the waste water between baffle plate 1, the baffle plate 2 can be crossed baffle plate 2 entered in the separate tank.The material of described baffle plate 1, baffle plate 2 is synthetic glass or steel plate.
The ammonium chloride solution (ammonia nitrogen concentration of calculating is 0.52g/L) of preparation 2g/L feeds in the reaction tank 1 continuously with 0.3t/h, as shown in Figure 1, simultaneously with 2.3kg/h add magnesium chloride, 4.0kg/h adds Sodium phosphate dibasic, fully stirs stirring velocity 100rpm.Mixture overflows to separate tank 3 through baffle plate 1, baffle plate 2, separates through flat sheet membrane, and the waste water that sees through flat sheet membrane is extracted out by pump, and the struvite precipitation of generation then accumulates in funnel place, separate tank bottom, is intermittently discharged by pressure filter, and pressing filtering liquid is circulated to separate tank 3 via pump again.In order not stop up flat sheet membrane, the aeration rate of aerator is 10m
3/ m
2H.Last handling process was stable in 8 minutes, and after measured, ammonia nitrogen concentration is 42.68mg/L(Na Shi colorimetric method for determining in the waste water of extraction), clearance is 92.15%, the rate of recovery of struvite reaches 94.3%.
Be the Coal Chemical Industry gasification waste water of 192.88mg/L with ammonia nitrogen concentration, feed continuously in the reaction tank 1 with the flow of 2.7t/h, simultaneously with 7.6kg/h drop into magnesium chloride, 13.3kg/h adds Sodium phosphate dibasic, fully stirs stirring velocity 500rpm.Mixture overflows in the separate tank 3 through baffle plate 1, baffle plate 2, separate through flat sheet membrane, the waste water that sees through flat sheet membrane is extracted out by pump, and the struvite precipitation of generation then accumulates in funnel place, separate tank bottom, intermittently discharged by pressure filter, pressing filtering liquid is circulated to separate tank 3 via pump again.In order not stop up flat sheet membrane, the aeration rate of aerator is 15m
3/ m
2H.Last handling process was stable in 10 minutes, and after measured, ammonia nitrogen concentration is 15.27mg/L(Na Shi colorimetric method for determining in the waste water of extraction), clearance is 92.08%, the rate of recovery of struvite reaches 95.8%.
Comparative Examples 1
Adopt ammonium chloride solution and the chemical agent identical with embodiment 1, feed in the existing ammonia nitrogen waste water treatment unit according to the consumption of embodiment 1, as shown in Figure 2, last handling process was stablized in 40 minutes.Detect the water outlet result, ammonia nitrogen concentration is 42.76mg/L(Na Shi colorimetric method for determining), clearance is 92.32%, the rate of recovery of struvite reaches 91.2%.
Comparative Examples 2
Adopt Coal Chemical Industry gasification waste water and the chemical agent identical with embodiment 2, feed in the Comparative Examples 1 described ammonia nitrogen waste water treatment unit according to the consumption of embodiment 2, last handling process was stablized in 40 minutes.Detect the water outlet result, ammonia nitrogen concentration is 15.18mg/L(Na Shi colorimetric method for determining), clearance is 91.53%, the rate of recovery of struvite reaches 91.1%.
By above-described embodiment 1,2, Comparative Examples 1,2 adopts technical scheme of the present invention to handle ammonia nitrogen waste water as can be known, realizes precipitation, is separated in same device and carries out, and simplifies procedures; The wastewater treatment time shortens, and improves the struvite rate of recovery.
Though above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements all belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. an ammonia nitrogen waste water treatment method is characterized in that, feeds ammonia nitrogen waste water continuously in the integral type wastewater treatment equipment, adds magnesium salts and phosphoric acid salt, fully stirs, separates, and the waste water after the separation is directly extracted out by water pump, and throw out is then intermittently discharged by pressure filter.
2. ammonia nitrogen waste water treatment method according to claim 1 is characterized in that, described integral type wastewater treatment equipment is a fountain square, is provided with the overflow unit in the middle of it, thereby the pond is divided into reaction tank and separate tank; Top, reaction tank side is provided with waterwater entrance and medicament adds mouth; Reaction tank inside is provided with agitator; Separate tank inside is provided with the flat sheet membrane separator.
3. ammonia nitrogen waste water treatment method according to claim 2 is characterized in that, described overflow unit comprises baffle plate 1 and baffle plate 2, and baffle plate 2 is on baffle plate 1 right side, and baffle plate 1 is 1/10 of pond length with baffle plate 2 spacings;
Baffle plate 1 one ends are fixed on the reaction tank top, and the other end is the 1/10-1/5 of pond height to the reaction tank distance from bottom;
Baffle plate 2 one ends are fixed on the separate tank bottom, and the other end is the 1/4-1/3 of pond height to the separate tank distance from top.
4. ammonia nitrogen waste water treatment method according to claim 3 is characterized in that, the material of described baffle plate 1, baffle plate 2 is synthetic glass or steel plate.
5. ammonia nitrogen waste water treatment method according to claim 2 is characterized in that, the volume of described flat sheet membrane separator is 0.5-6.5L, and the membrane pore size of flat sheet membrane is 0.05-0.2 μ m, and membrane flux is 20-300L/m
2H.
6. ammonia nitrogen waste water treatment method according to claim 2 is characterized in that, described flat sheet membrane separator bottom arranges aerator, and its aeration rate is 5-15m
3/ m
2H.
7. ammonia nitrogen waste water treatment method according to claim 2 is characterized in that, described separate tank bottom shape is the back taper funnel.
8. ammonia nitrogen waste water treatment method according to claim 1 is characterized in that, described stirring velocity is 100-1000rpm.
9. ammonia nitrogen waste water treatment method according to claim 1 is characterized in that, pH is 8-10 in the described waste water, and COD concentration is 50-1500mg/L, and ammonia nitrogen concentration is 100-2000mg/L.
10. ammonia nitrogen waste water treatment method according to claim 1 is characterized in that, described waste water feeds flow and is specially 0.3-50t/h; It is 0.3-0.72t/h that waste water is extracted flow out by water pump.
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| CN201310244756.6A CN103288242B (en) | 2013-06-19 | 2013-06-19 | Ammonia nitrogen wastewater treatment method |
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| CN201310244756.6A CN103288242B (en) | 2013-06-19 | 2013-06-19 | Ammonia nitrogen wastewater treatment method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936192A (en) * | 2014-04-02 | 2014-07-23 | 化工部长沙设计研究院 | High-concentration ammonia-nitrogen wastewater treatment process |
| CN104436824A (en) * | 2014-04-30 | 2015-03-25 | 张家港江南粉末涂料有限公司 | Sewage treatment system in powder coating factory |
| CN110902981A (en) * | 2018-09-10 | 2020-03-24 | 湖南军信环保股份有限公司 | Sludge treatment method |
| CN115475425A (en) * | 2022-09-14 | 2022-12-16 | 吉安创成环保科技有限责任公司 | Ammonia nitrogen wastewater treatment system and ammonia nitrogen wastewater treatment method |
| CN117865420A (en) * | 2024-03-11 | 2024-04-12 | 中天合创能源有限责任公司 | Equipment and method for treating ammonia nitrogen in sewage of coal chemical gasification process by membrane technology |
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| US20120031849A1 (en) * | 2010-02-05 | 2012-02-09 | Ostara Nutrient Recovery Technologies Inc. | Aerated reactor apparatus and methods |
| CN202156940U (en) * | 2011-07-20 | 2012-03-07 | 中国矿业大学(北京) | High ammonia-nitrogen sewage treatment system |
| CN202297252U (en) * | 2011-09-01 | 2012-07-04 | 上海润德环境工程有限公司 | Low-energy-consumption integrated nitrogen and phosphorus recycling device |
| CN102674636A (en) * | 2012-05-29 | 2012-09-19 | 东华大学 | Dynamic combined reaction device for biological treatment of printing and dyeing wastewater |
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2013
- 2013-06-19 CN CN201310244756.6A patent/CN103288242B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120031849A1 (en) * | 2010-02-05 | 2012-02-09 | Ostara Nutrient Recovery Technologies Inc. | Aerated reactor apparatus and methods |
| CN202156940U (en) * | 2011-07-20 | 2012-03-07 | 中国矿业大学(北京) | High ammonia-nitrogen sewage treatment system |
| CN202297252U (en) * | 2011-09-01 | 2012-07-04 | 上海润德环境工程有限公司 | Low-energy-consumption integrated nitrogen and phosphorus recycling device |
| CN102674636A (en) * | 2012-05-29 | 2012-09-19 | 东华大学 | Dynamic combined reaction device for biological treatment of printing and dyeing wastewater |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936192A (en) * | 2014-04-02 | 2014-07-23 | 化工部长沙设计研究院 | High-concentration ammonia-nitrogen wastewater treatment process |
| CN103936192B (en) * | 2014-04-02 | 2015-05-27 | 化工部长沙设计研究院 | High-concentration ammonia-nitrogen wastewater treatment process |
| CN104436824A (en) * | 2014-04-30 | 2015-03-25 | 张家港江南粉末涂料有限公司 | Sewage treatment system in powder coating factory |
| CN110902981A (en) * | 2018-09-10 | 2020-03-24 | 湖南军信环保股份有限公司 | Sludge treatment method |
| CN115475425A (en) * | 2022-09-14 | 2022-12-16 | 吉安创成环保科技有限责任公司 | Ammonia nitrogen wastewater treatment system and ammonia nitrogen wastewater treatment method |
| CN117865420A (en) * | 2024-03-11 | 2024-04-12 | 中天合创能源有限责任公司 | Equipment and method for treating ammonia nitrogen in sewage of coal chemical gasification process by membrane technology |
| CN117865420B (en) * | 2024-03-11 | 2024-05-10 | 中天合创能源有限责任公司 | Equipment and method for treating ammonia nitrogen in sewage of coal chemical gasification process by membrane technology |
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| CB03 | Change of inventor or designer information |
Inventor after: Huang Huayu Inventor after: Guo Xiaohong Inventor after: Yang Jie Inventor after: Liang Bei Inventor after: Zhang Huiyue Inventor after: Bai Wanqiao Inventor after: Du Lilao Inventor after: Zhang Jing Inventor after: Sun Changshun Inventor after: Zhang Zhenwen Inventor after: Zhang Xiaojun Inventor before: Huang Huayu Inventor before: Liang Bei Inventor before: Zhang Huiyue Inventor before: Bai Wanqiao Inventor before: Du Lilao Inventor before: Zhang Jing Inventor before: Sun Changshun Inventor before: Zhang Zhenwen |
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Free format text: CORRECT: INVENTOR; FROM: HUANG HUAYU LIANG BEI ZHANG HUIYUE BAI WANQIAO DU LILAO ZHANG JING SUN CHANGSHUN ZHANG ZHENWEN TO: HUANG HUAYU LIANG BEI ZHANG HUIYUE BAI WANQIAO DU LILAO ZHANG JING SUN CHANGSHUN ZHANG ZHENWEN ZHANG XIAOJUN GUO XIAOHONG YANG JIE |
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