CN206359347U - A kind of device of the ammonia aeration technique of high ammonia-nitrogen wastewater - Google Patents
A kind of device of the ammonia aeration technique of high ammonia-nitrogen wastewater Download PDFInfo
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- CN206359347U CN206359347U CN201621234227.3U CN201621234227U CN206359347U CN 206359347 U CN206359347 U CN 206359347U CN 201621234227 U CN201621234227 U CN 201621234227U CN 206359347 U CN206359347 U CN 206359347U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
A kind of device of the ammonia aeration technique of high ammonia-nitrogen wastewater, carried out by the precipitation process after alkali pH regulations will be added to be arranged on ammonia aeration process in a closed reaction unit, and be aerated by jet-flow aeration mode, make full use of the waste heat of biochemical system to heat up high-concentration ammonia nitrogenous wastewater simultaneously, so substantially increase ammonia removal efficiency；And the precipitating sludge produced in system is flowed back, the usage amount of lime or milk of lime is saved, it is final that sulfuric acid absorption is used to the ammonia that system is produced, obtained ammonium sulfate is recycled as ammonium fertilizer, so that whole system not only non-secondary pollution, and ammonia removal efficiency is high, operating cost is low, so that the promotion and application of this technology are more extensive.
Description
Technical field
The utility model belongs to high ammonia-nitrogen wastewater processing technology field, more particularly to a kind of ammonia aeration of high ammonia-nitrogen wastewater
The device of technique.
Background technology
Because high ammonia-nitrogen wastewater (such as percolate, wastewater from chemical industry) is very big to environmental hazard, and it is difficult to handle, is full
The requirement that the sufficient public improves constantly to environmental quality, country has worked out increasingly stricter discharge standard to ammonia nitrogen, exploiting economy,
Efficient denitrogenation technology turns into the emphasis and focus of water pollution engineering field.
In recent years, both at home and abroad to having carried out more research in terms of ammonia nitrogen waste water processing.Although many methods can have
Imitate and remove ammonia nitrogen, but really there was only a few for what high-concentration ammonia nitrogenous wastewater was handled, it is special in high-concentration ammonia nitrogenous wastewater industry
It is not landfill leachate treatment industry, ammonia nitrogen is often up to more than 2000mg/L, if directly carrying out biological denitrificaion, treatment of process streams
Journey is long, high energy consumption, and denitrification process generally requires to add a large amount of organic carbon sources, and operating cost is high, and final outflow water is also difficult to
Reach that new discharge standard, especially total nitrogen are difficult to reach discharge standard.Therefore, high ammonia-nitrogen wastewater is generally required using pretreatment
Method carries out deamination.
At present, conventional preprocess method has chemical precipitation method (MAP), break point chlorination method and ammonia aeration etc..
Chemical precipitation method (the MAP precipitation method) removal efficiency is preferable, and not by temperature limiting, it is simple to operate, form phosphoric acid
The precipitating sludge of ammonium magnesium can be used as compound fertilizer, realize twice laid, so as to offset a part of cost；If producing phosphorus with some
The industrial enterprise of hydrochlorate waste water and the cartel for producing bittern, can save medicament expense use, beneficial to large-scale application, but chemistry
The precipitation method by ammonium magnesium phosphate solubility product due to being limited, and the ammonia nitrogen in waste water is reached after finite concentration, then puts into pharmaceutical quantities, then gone
Except DeGrain, and input cost is greatly increased, and the sludge of generation is more, and processing cost is high, and adds what is introduced during medicament
Chlorion and remaining phosphorus easily cause secondary pollution, are seldom used in high-concentration ammonia nitrogenous wastewater industry.
The ammonia removal efficiency of break point chlorination method is high, and clearance can reach more than 99%, and effect stability, investment goods is few, reaction
Speed is fast, thorough.But the chemical feeding quantity of break point chlorination is big, processing cost is high, and accessory substance chloramines and chlorinatedorganic can be caused
Secondary pollution, be typically applicable low ammonia nitrogen concentration (<Waste water 50mg/L), is used for the advanced treating of ammonia nitrogen waste water.
Ammonia aeration method removes ammonia nitrogen effect preferably, easy to operate, it is easy to control, and is suitable at the deamination of high ammonia-nitrogen wastewater
Reason, is high ammonia-nitrogen wastewater preconditioning technique the most frequently used at present.But traditional ammonia aeration method is added into high ammonia-nitrogen wastewater first
Enter lime or milk of lime, adjust the pH of waste water to strong basicity environment, precipitation reaction is brought it about, then by the supernatant after precipitation
Ammonia aeration is carried out, the problem of this mode is present is during adding alkali regulation pH to be precipitated, while can produce substantial amounts of
Ammonia, this can bring serious secondary pollution problem, and frequent fouling in stripping tower, and ammonia nitrogen removal efficiency is low during low temperature, makes
Obtaining the use of traditional ammonia aeration technology has certain limitation.
Utility model content
The purpose of this utility model is that the secondary pollution problem in above-mentioned traditional ammonia aeration technology that is directed to is serious, ammonia removal efficiency
It is low, and in stripping tower frequent fouling technical problem there is provided a kind of device of the ammonia aeration technique of high ammonia-nitrogen wastewater, significantly
Improve ammonia removal efficiency, it is to avoid secondary pollution, reduce operating cost.
Technical scheme
In order to realize above-mentioned technical purpose, the device of the ammonia aeration technique of high ammonia-nitrogen wastewater of the present utility model, its feature
It is：It includes raw water box, ammonia aeration reactor, lime or milk of lime case, filtered water tank, pH readjustments case, water producing tank, gas absorption
Device, ammonium sulfate collection box；
Raw water box is connected with ammonia aeration reactor, and the first intake pump is housed on connecting line；Lime or milk of lime case and ammonia
Stripping reactor is connected, and the first dosing pump is housed on connecting line；Filtered water tank is connected with ammonia aeration reactor, is filled on connecting line
There is the second intake pump；The water outlet output end of ammonia aeration reactor is connected with pH readjustment casees, and pH readjustment casees are connected with water producing tank；Ammonia blows
The foam output end of dealkylation reaction device is connected with foam treatment device；The ammonia output end of ammonia aeration reactor connects with gas absorber
Connect, the output end of gas absorber is connected with ammonium sulfate collection box.
Further, the ammonia aeration reactor is made up of reaction zone, settling zone and the part of froth zone three.Set inside reaction zone
There is pH meter, to control the pH of waste water, bottom is provided with jet aerator, and the inlet end of jet aerator connects with outside air blower
Connect, the water inlet end of jet aerator is connected with the port of export of the first intake pump, control valve is housed on connecting line；The bottom of reaction zone
Portion is additionally provided with biochemical system waste heat thermal source connectivity port.The base sludge output end of settling zone connects back to lime or milk of lime case,
Connecting line is provided with mud valve and sludge reflux pump.The top of froth zone is provided with spray equipment, to reduce the big volume production of foam
Raw, the water inlet end of spray equipment is connected with the port of export of the second intake pump；The top of spray equipment is ammonia gas collection area.
Further, the entrance point of the gas absorber is connected with sulfuric acid case, and the second dosing pump is housed on connecting line.
Further, lime or the milk of lime case in pH readjustment casees with being respectively equipped with the first mixer and the second mixer.
Beneficial effect
The utility model by by add alkali pH adjust after precipitation process and ammonia aeration process be arranged on one it is closed anti-
Progress in device is answered, and is aerated by jet-flow aeration mode, while making full use of the waste heat of biochemical system to high strength ammonia
Nitrogen waste water is heated up, and so substantially increases ammonia removal efficiency；And the precipitating sludge produced in system is flowed back, save
About the usage amount of lime or milk of lime, finally uses sulfuric acid absorption, obtained ammonium sulfate is as ammonium to the ammonia that system is produced
Fertilizer is recycled so that whole system not only non-secondary pollution, and ammonia removal efficiency is high, operating cost is low, so that this technology
Promotion and application it is more extensive.
Brief description of the drawings
Accompanying drawing 1 is the process chart of the utility model embodiment.
Accompanying drawing 2 is the equipment connecting relation schematic diagram of the utility model embodiment.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described further.
Embodiment
As shown in Figure 2, the device of the ammonia aeration technique of a kind of high ammonia-nitrogen wastewater, it includes raw water box 4, ammonia aeration and reacted
Device 7, lime or milk of lime case 1, filtered water tank 14, pH readjustments case 19, water producing tank 22, gas absorber 26, ammonium sulfate collection box 27；
Raw water box 4 is connected with ammonia aeration reactor 7, and the first intake pump 5 is housed on connecting line；Lime or milk of lime case 1
It is connected with ammonia aeration reactor 7, the first dosing pump 3 is housed on connecting line；Filtered water tank 14 is connected with ammonia aeration reactor 7, even
Take over and the second intake pump 13 is housed on road；The water outlet output end of ammonia aeration reactor 7 is connected with pH value readjustment case 20, pH value readjustment
Case 20 is connected with water producing tank 22；The foam output end of ammonia aeration reactor 7 is connected with foam treatment device 23；Ammonia aeration reactor
7 ammonia output end is connected with gas absorber 26, and the output end of gas absorber 26 is connected with ammonium sulfate collection box 27.
The ammonia aeration reactor 7 is made up of reaction zone 8, settling zone 9 and the part of froth zone 10 3.Set inside reaction zone 8
There is pH meter 11, to control the pH value of waste water, bottom is provided with jet aerator 15, the inlet end of jet aerator 15 and outside drum
Blower fan 16 is connected, and the water inlet end of jet aerator 15 is connected with the port of export of the first intake pump 5, and control valve is housed on connecting line
6；The bottom of reaction zone 8 is additionally provided with biochemical system waste heat thermal source connectivity port 17, and the base sludge output end of settling zone 9 is connected back to
Lime or milk of lime case 1, connecting line is provided with mud valve 18 and sludge reflux pump 19；The top of froth zone 10 is filled provided with spray
12 are put, to reduce a large amount of generations of foam, the water inlet end of spray equipment 12 is connected with the port of export of the second intake pump 13；Spray dress
The top for putting 12 is ammonia gas collection area.
The entrance point of the gas absorber 26 is connected with sulfuric acid case 24, and the second dosing pump 5 is housed on connecting line.
Lime or the milk of lime case 1 in pH readjustment casees 20 with being respectively equipped with the first mixer 1 and the second mixer 21.
It is as follows that ammonia aeration technical process is carried out using said apparatus：
The first step, is pumped into ammonia aeration reactor, in the bar being stirred continuously respectively by high ammonia-nitrogen wastewater and lime or milk of lime
Under part, between the pH to 10~13 for adjusting waste water；
Second step, air is blasted by the bottom of air blower to ammonia aeration reaction system, and by the way of jet-flow aeration
Be aerated, the gas-water ratio in control system be 1000~5000 between, then using biochemical system waste heat to system progress
Heating, now constantly produces ammonia and substantial amounts of white foam in system, ammonia rises to gas collection area and is expelled to ammonia absorption dress
In putting, foam rises to froth zone, and clear water is sprayed downwards with certain speed by the clear water spray equipment on the top of reactor,
To reduce the generation of foam, the excessive outflow system of foam is post-processed by the overflow mechanism above reactor；Simultaneity factor
Middle to produce substantial amounts of particulate matter, particulate matter is precipitated to the settling zone of reactor bottom, and partly precipitated passes through sludge reflux pump reflux
Recycled to lime or milk of lime case, excess sludge passes through mud valve discharge system；The supernatant that system is finally produced
Case is adjusted back into pH.
3rd step, to above-mentioned ammonia aeration after add strong acid in obtained supernatant, carry out pH and pull back to after 6.0-8.5 to enter
Water producing tank；The ammonia that second step is produced simultaneously is absorbed using sulfuric acid, and obtained ammonium sulfate is recycled as ammonium fertilizer.
The utility model by by add alkali pH value adjust after precipitation process and ammonia aeration process be arranged on one it is closed
Carry out, and be aerated by jet-flow aeration mode in reaction unit, while making full use of the waste heat of biochemical system to high concentration
Ammonia nitrogen waste water is heated up, and so substantially increases ammonia removal efficiency；And the precipitating sludge produced in system is flowed back,
The usage amount of lime or milk of lime has been saved, sulfuric acid absorption finally has been used to the ammonia that system is produced, obtained ammonium sulfate conduct
Ammonium fertilizer is recycled so that whole system not only non-secondary pollution, and ammonia removal efficiency is high, operating cost is low, so that this skill
The promotion and application of art are more extensive.
Claims (4)
1. the device of the ammonia aeration technique of high ammonia-nitrogen wastewater, it is characterised in that：It includes raw water box (4), ammonia aeration reactor
(7), lime or milk of lime case (1), filtered water tank (14), pH readjustment casees (19), water producing tank (22), gas absorber (26), sulfuric acid
Ammonium collection box (27)；
Raw water box (4) is connected with ammonia aeration reactor (7), and the first intake pump (5), lime or milk of lime case are housed on connecting line
(1) it is connected with ammonia aeration reactor (7), the first dosing pump (3), filtered water tank (14) and ammonia aeration reactor is housed on connecting line
(7) connect, the second intake pump (13) is housed on connecting line, water outlet output end and the pH of ammonia aeration reactor (7) adjust back case
(20) connect, pH readjustment casees (20) are connected with water producing tank (22), the foam output end of ammonia aeration reactor (7) is handled with foam to be filled
Put (23) connection, the ammonia output end of ammonia aeration reactor (7) is connected with gas absorber (26), gas absorber (26) it is defeated
Go out end to be connected with ammonium sulfate collection box (27).
2. the device of the ammonia aeration technique of high ammonia-nitrogen wastewater as claimed in claim 1, it is characterised in that：The ammonia aeration reaction
Device (7) includes being provided with pH meter (11) inside reaction zone (8), settling zone (9) and froth zone (10), reaction zone (8), to control waste water
PH, bottom is provided with jet aerator (15), and the inlet end of jet aerator (15) is connected with the air blower (16) of outside, jet
The water inlet end of aerator (15) is connected with the port of export of the first intake pump (5), and control valve (6), reaction zone are housed on connecting line
(8) bottom is additionally provided with biochemical system waste heat thermal source connectivity port (17)；
The base sludge output end of settling zone (9) connects back to lime or milk of lime case (1), and connecting line is provided with mud valve (18)
With sludge reflux pump (19)；
The top of froth zone (10) is provided with spray equipment (12) to reduce a large amount of generations of foam, the water inlet end of spray equipment (12)
It is connected with the port of export of the second intake pump (13), the top of spray equipment (12) is ammonia gas collection area.
3. the device of the ammonia aeration technique of high ammonia-nitrogen wastewater as claimed in claim 1, it is characterised in that：The gas absorber
(26) entrance point is connected with sulfuric acid case (24), and the second dosing pump (25) is housed on connecting line.
4. the device of the ammonia aeration technique of high ammonia-nitrogen wastewater as claimed in claim 1, it is characterised in that：The lime or lime
Newborn case (1) in pH readjustment casees (20) with being respectively equipped with the first mixer (1) and the second mixer (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234227.3U CN206359347U (en) | 2016-11-17 | 2016-11-17 | A kind of device of the ammonia aeration technique of high ammonia-nitrogen wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234227.3U CN206359347U (en) | 2016-11-17 | 2016-11-17 | A kind of device of the ammonia aeration technique of high ammonia-nitrogen wastewater |
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| Publication Number | Publication Date |
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| CN206359347U true CN206359347U (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621234227.3U Active CN206359347U (en) | 2016-11-17 | 2016-11-17 | A kind of device of the ammonia aeration technique of high ammonia-nitrogen wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396184A (en) * | 2016-11-17 | 2017-02-15 | 上海晶宇环境工程股份有限公司 | Ammonia stripping process and device for high-ammonia-nitrogen wastewater |
| CN111748012A (en) * | 2020-06-22 | 2020-10-09 | 广东闻扬环境科技有限公司 | Device and method for recovering ammonium from ammonian-containing stock solution and concentrating protein stock solution |
-
2016
- 2016-11-17 CN CN201621234227.3U patent/CN206359347U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396184A (en) * | 2016-11-17 | 2017-02-15 | 上海晶宇环境工程股份有限公司 | Ammonia stripping process and device for high-ammonia-nitrogen wastewater |
| CN111748012A (en) * | 2020-06-22 | 2020-10-09 | 广东闻扬环境科技有限公司 | Device and method for recovering ammonium from ammonian-containing stock solution and concentrating protein stock solution |
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