CN107585816A - A kind of low-concentration ammonia-nitrogen removes equipment - Google Patents
A kind of low-concentration ammonia-nitrogen removes equipment Download PDFInfo
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- CN107585816A CN107585816A CN201710937220.0A CN201710937220A CN107585816A CN 107585816 A CN107585816 A CN 107585816A CN 201710937220 A CN201710937220 A CN 201710937220A CN 107585816 A CN107585816 A CN 107585816A
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Abstract
The invention provides a kind of low-concentration ammonia-nitrogen to remove equipment, belongs to sewage treatment area, the comprehensive advantage for employing packed tower and plate column, is greatly enhanced the stripping rate of ammonia nitrogen in waste water, improves land utilization ratio, reduce equipment investment and operating cost.The present invention includes：Feed reservoir（V101）, water diversion tank（V102）, waste-heat recoverer（E101）, reheater（E102）, board-like deammoniation tower（T101）, air heater（E103）, multistage composite Ammonic washing tower（T102）, one-level scrubber cooler（E104）, two level scrubber cooler（E105）, feed pump（P101）, go out water pump（P102）, one-level washing pump（P104）, two level washing pump（P105）, three-level washing pump（P103）, air blower（F‑101）, air-introduced machine（F102）.
Description
Technical field
The invention belongs to sewage treatment area, more particularly to a kind of low-concentration ammonia-nitrogen removing equipment.
Background technology
Ammonia nitrogen in water body refers to ammonia (NH3) or ammonium (NH4 +) chemical combination ammonia existing for ionic species.Ammonia nitrogen is all types of nitrogen
Middle harm influences a kind of maximum form, is the mark that water body is contaminated, its harm to water ecological environment shows multiple
Aspect.Ammonia nitrogen is the nutrient in water body, and water eutrophication phenomenon can be caused to produce, be the main oxygen consumption pollutant in water body,
It is toxic to fish and some aquatiles, and the ammonia nitrogen in water can change into nitrite under certain condition, if
Drink for a long time, the nitrite in water will combine to form nitrosamine with protein, and this is a kind of strong carcinogen, to health
It is totally unfavorable.
Currently used deamination method has the technologies such as zeolite deamination method, ion-exchange, electrochemical oxidation process, blow-off method,
Zeolite deamination method, ion-exchange, electrochemical oxidation process are applied generally to the ammonia-containing water of low concentration, but also regeneration be present
Difficulty, the problem of energy consumption is big, blow-off method deamination is applied to various concentration waste water deaminizings, and high temperature air is passed through in waste water, changes ammonia
Nitrogen is dissolved in the water established vapor-liquid equilibrium relationship, these volatile substances is switched to gas phase by liquid phase, is then collected.
This process belongs to mass transport process, and its motive force is the concentration difference of the material in the concentration and gas phase of ammonia nitrogen in waste water.Blow-off method institute
Stripping device has stripping pond, stripping tower etc., but to environmental injury it is minimum, it is closed-loop operation be stripping tower process, stripping tower
It is divided into two kinds of packed tower, plate column again.The packing layer of installing certain altitude in packed tower tower, liquid is under tower top spray, in filler
Surface flows downward in membranaceous；Gas is sent into by bottom of towe, from below to up with liquid film counter current contacting, completes mass transport process.The bottom of due to
The ammonia of portion's blowout returns molten serious without autonomous channel, and mass-transfer efficiency is not high enough, and equipment is huger, filler easily blocks, air quantity
Greatly, subsequent treatment is costly.Sieve-plate tower is to set the perforated column plate of a number of band in Ta Nei, and water is sprayed, worn from top to bottom
Cross sieve aperture down, air then flows from the bottom up, when gas passes through liquid layer on sieve plate in a manner of bubbling, contacts with each other and is passed
Matter.But in general plate column sieve aperture easily blocks, exists and a certain degree of return that molten phenomenon, air quantity are big, subsequent treatment is costly.
The content of the invention
The invention provides a kind of low-concentration ammonia-nitrogen to remove equipment, the comprehensive advantage for employing packed tower and plate column, pole
The earth improves the stripping rate of ammonia nitrogen in waste water, improves land utilization ratio, reduces equipment investment and operating cost.
To realize object above, the present invention uses following technical scheme：
A kind of low-concentration ammonia-nitrogen removes equipment, including：Feed reservoir（V101）, water diversion tank（V102）, waste-heat recoverer（E101）, again
Hot device（E102）, board-like deammoniation tower（T101）, air heater（E103）, multistage composite Ammonic washing tower（T102）, one-level washing it is cold
But device（E104）, two level scrubber cooler（E105）, feed pump（P101）, go out water pump（P102）, one-level washing pump（P104）, two
Level washing pump（P105）, three-level washing pump（P103）, air blower（F-101）, air-introduced machine（F102）.
Board-like deammoniation tower described in apparatus as discussed above include from top to bottom be respectively ammonia outlet, ammonia-containing water import,
Hot-air inlets, ammonia collecting pipe, downspout, band deflection plate tower tray, dirt discharging valve, gas distributor, deamination water out, skirt.
The multistage composite Ammonic washing tower include from top to bottom for gas vent, gas-liquid separation device, cleaning solution mouth, liquid distribution device,
Three-level wash mill, isolating device, cleaning solution mouth, two level wash mill, cleaning solution mouth, one-level wash mill, gas feed, tower
Kettle, wherein tower reactor include one-level cleaning solution storehouse, two level cleaning solution storehouse, three-level cleaning solution storehouse.The board-like deammoniation tower and multistage are answered
Close Ammonic washing tower tower top and corrosion-resistant gas-liquid separation device is set.
Beneficial effect of the present invention：The invention provides a kind of low-concentration ammonia-nitrogen to remove equipment, according to stripping and washes each of ammonia
From feature, the comprehensive advantage for employing packed tower and plate column, stripping gas liquid ratio is reduced, stripping efficiency is improved, reduces water outlet
Ammonia nitrogen concentration, reduce in stripping tower return molten phenomenon as far as possible, high-temperature gas stripping is used using solubility curve, and using conjunction
The fluid flow pattern of reason, accomplish in tower repeatedly, stripping step by step；The stripping rate of ammonia nitrogen in waste water is greatly enhanced, improves soil profit
With rate, equipment investment and operating cost are reduced.
Brief description of the drawings
Fig. 1 is the ammonia nitrogen removal equipment of the present invention.
Fig. 2 is the structure chart of board-like deammoniation tower in present device.
Fig. 3 is the structure chart of multistage composite Ammonic washing tower in present device.
Embodiment
Ammonia-containing water is pumped into waste-heat recoverer from feed reservoir charging, the hot water extracted out with going out water pump from board-like deammoniation tower bottom
Exchanged heat, the raw water after heat exchange can be warming up to 68 DEG C or so, then 90 DEG C can be risen to after reheater heats, lateral in tower top
Into every layer of tower tray can be each independent liquid Space.According to external heat or cooling and its capacity, given up in each tower tray
The residence time of water is usually 4min.Passage is divided into by vertical baffling plate, avoids mutual channelling.Hot compressed air is by being arranged at
Efficient gas distributor injection between deflection plate.The liquid level of 0.3m in tower tray is kept by overflow pipe or weir.By setting baffling
Plate shape produces thin layer condition into narrow waste water tunnel, and multiple gas injections on the gas distributor of column plate bottom drive
Waste water, waste water is continuously flow toward deflection plate with thin layer state and be close to thereon.Hot compressed air is passed through in waste water, changes ammonia nitrogen
Be dissolved in the water established vapor-liquid equilibrium relationship, these volatile substances is switched to gas phase by liquid phase.The ammonia nitrogen and sky of blowout
Gas enters central ammonia collecting pipe, the ammonia and hot-air being removed（Containing a small amount of water vapour）Arranged into ammonia collecting pipe from tower top
Go out, tower top sets induced draft blower withdraws, and air-introduced machine is suction relative to high efficiency plate deammoniation tower, negative pressure is formed in tower, according to Henry
Law, the volatility of ammonia is improved, be advantageous to further reduce ammonia level in waste water, greatly reduce vapour during stripping
Water ratio, reduces energy consumption.
Ammonia-contaminated gas is inversely connect from the oblique entrance in multistage composite Ammonic washing tower bottom with one-level cleaning solution on filler surface
Touch, mass-and heat-transfer phenomenon occurs, one-level cleaning solution enters bottom one-level cleaning solution storehouse.Because the motive force of absorption is ammonia in gas
The concentration difference of the material in the concentration and detergent of nitrogen, one-level cleaning solution are absorption（Or reaction）Complete liquid, wherein ammonia nitrogen concentration
Maximum, absorption efficiency herein is also minimum.One-level cleaning solution washs pumped with one-level, through one-level scrubber cooler Posterior circle
Spray.First absorption is carried out（Or reaction）Ammonia-contaminated gas absorbed again into two level washing section（Or reaction）, two level
Cleaning solution is interstitial fluid in absorption, and wherein ammonia nitrogen concentration is placed in the middle, and absorption efficiency herein is also placed in the middle.Two level cleaning solution is washed with two level
Pumped is washed, is sprayed through two level scrubber cooler Posterior circle.Two level cleaning solution enters bottom two level cleaning solution using individual passage
Storehouse.Double absorption is carried out（Or reaction）Ammonia-contaminated gas（Ammonia nitrogen concentration is low）Absorbed again into three-level washing section（Or
Reaction）, three-level cleaning solution is absorbs just not good liquor, and wherein ammonia nitrogen concentration is minimum, and absorption efficiency herein is also best.Wash ammino lattice
Tail gas from tower top qualified discharge.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvement can also be made, these improvement also should be regarded as the present invention's
Protection domain.
Claims (3)
1. a kind of low-concentration ammonia-nitrogen removes equipment, it is characterised in that including：Feed reservoir（V101）, water diversion tank（V102）, waste heat return
Receive device（E101）, reheater（E102）, board-like deammoniation tower（T101）, air heater（E103）, multistage composite Ammonic washing tower
（T102）, one-level scrubber cooler（E104）, two level scrubber cooler（E105）, feed pump（P101）, go out water pump（P102）, one
Level washing pump（P104）, two level washing pump（P105）, three-level washing pump（P103）, air blower（F-101）, air-introduced machine（F102）.
2. low-concentration ammonia-nitrogen according to claim 1 removes equipment, it is characterised in that the board-like deammoniation tower is included from upper
To lower respectively ammonia outlet, ammonia-containing water import, hot-air inlets, ammonia collecting pipe, downspout, band deflection plate tower tray, row
Net valve, gas distributor, deamination water out, skirt.
3. low-concentration ammonia-nitrogen according to claim 1 removes equipment, it is characterised in that the multistage composite Ammonic washing tower includes
From top to bottom for gas vent, gas-liquid separation device, cleaning solution mouth, liquid distribution device, three-level wash mill, isolating device,
Cleaning solution mouth, two level wash mill, cleaning solution mouth, one-level wash mill, gas feed, tower reactor, wherein tower reactor are washed including one-level
Wash liquid storehouse, two level cleaning solution storehouse, three-level cleaning solution storehouse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937220.0A CN107585816A (en) | 2017-09-30 | 2017-09-30 | A kind of low-concentration ammonia-nitrogen removes equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937220.0A CN107585816A (en) | 2017-09-30 | 2017-09-30 | A kind of low-concentration ammonia-nitrogen removes equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107585816A true CN107585816A (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710937220.0A Pending CN107585816A (en) | 2017-09-30 | 2017-09-30 | A kind of low-concentration ammonia-nitrogen removes equipment |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600693A (en) * | 2004-10-26 | 2005-03-30 | 王小宁 | High performance tower for picking off ammonia nitrogen |
| CN2745925Y (en) * | 2004-07-30 | 2005-12-14 | 邢台钢铁有限责任公司 | Ammonic washing tower |
| CN102061197A (en) * | 2011-01-24 | 2011-05-18 | 江苏中显集团有限公司 | Coke oven gas desulfuration and deamination combined purifying method and special device thereof |
| CN202687993U (en) * | 2012-08-01 | 2013-01-23 | 河北景化化工有限公司 | Device for recovering ammonia in copper wash resurgent gas |
| CN104445272A (en) * | 2014-11-28 | 2015-03-25 | 王文领 | Comprehensive recycling method of transformation gas condensation liquid containing ammonia gas and carbon dioxide |
| CN105126548A (en) * | 2015-08-26 | 2015-12-09 | 华陆工程科技有限责任公司 | Combined device for reclaiming ammonia from low-concentration ammonia-containing gas and purifying gas |
| CN105985814A (en) * | 2015-02-09 | 2016-10-05 | 上海同特化工科技有限公司 | Treatment technology for removing hydrogen sulfide, hydrogen cyanide and ammonia in coal gas |
| CN106927533A (en) * | 2017-04-06 | 2017-07-07 | 江苏好山好水环保科技有限公司 | A kind of high-efficiency and energy-saving type low-temperature negative-pressure deamination and ammonia recovery system device |
| CN207525007U (en) * | 2017-09-30 | 2018-06-22 | 江苏迈克化工机械有限公司 | A kind of low-concentration ammonia-nitrogen removes equipment |
-
2017
- 2017-09-30 CN CN201710937220.0A patent/CN107585816A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2745925Y (en) * | 2004-07-30 | 2005-12-14 | 邢台钢铁有限责任公司 | Ammonic washing tower |
| CN1600693A (en) * | 2004-10-26 | 2005-03-30 | 王小宁 | High performance tower for picking off ammonia nitrogen |
| CN102061197A (en) * | 2011-01-24 | 2011-05-18 | 江苏中显集团有限公司 | Coke oven gas desulfuration and deamination combined purifying method and special device thereof |
| CN202687993U (en) * | 2012-08-01 | 2013-01-23 | 河北景化化工有限公司 | Device for recovering ammonia in copper wash resurgent gas |
| CN104445272A (en) * | 2014-11-28 | 2015-03-25 | 王文领 | Comprehensive recycling method of transformation gas condensation liquid containing ammonia gas and carbon dioxide |
| CN105985814A (en) * | 2015-02-09 | 2016-10-05 | 上海同特化工科技有限公司 | Treatment technology for removing hydrogen sulfide, hydrogen cyanide and ammonia in coal gas |
| CN105126548A (en) * | 2015-08-26 | 2015-12-09 | 华陆工程科技有限责任公司 | Combined device for reclaiming ammonia from low-concentration ammonia-containing gas and purifying gas |
| CN106927533A (en) * | 2017-04-06 | 2017-07-07 | 江苏好山好水环保科技有限公司 | A kind of high-efficiency and energy-saving type low-temperature negative-pressure deamination and ammonia recovery system device |
| CN207525007U (en) * | 2017-09-30 | 2018-06-22 | 江苏迈克化工机械有限公司 | A kind of low-concentration ammonia-nitrogen removes equipment |
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