CN107814465A - A kind of high ammonia nitrogen heavy metal ion industrial wastewater processing unit - Google Patents
A kind of high ammonia nitrogen heavy metal ion industrial wastewater processing unit Download PDFInfo
- Publication number
- CN107814465A CN107814465A CN201711288248.2A CN201711288248A CN107814465A CN 107814465 A CN107814465 A CN 107814465A CN 201711288248 A CN201711288248 A CN 201711288248A CN 107814465 A CN107814465 A CN 107814465A
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- waste water
- stripper
- processing unit
- heavy metal
- ammonia nitrogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention provides a kind of high ammonia nitrogen heavy metal ion industrial wastewater processing unit, it is related to field of environment protection.Processing unit may include PH adjusting meanss, stripper, stripping device and PH call-back devices in general manner.PH adjusting meanss are used to make the ammonium ion in waste water be converted into amino molecule, and generate unnecessary hydroxide ion.Stripper is connected with PH adjusting meanss, for removing the heavy metal ion in waste water.Stripping device import is connected with the outlet of stripper, and ammonia nitrogen removal processing is carried out to waste water.PH call-back devices are connected with the outlet of stripping device, and the waste water after processing is neutralized.The high ammonia nitrogen heavy metal ion industrial wastewater processing unit of the present invention, heavy metal complex is decomposed by using stripper, combined with hydroxide ion, generation precipitation, remove heavy metal in waste water, avoid directly discharge from impacting environment, ammonia nitrogen removal processing is then carried out to waste water using stripping device.
Description
Technical field
The present invention relates to field of environment protection, more particularly to a kind of high ammonia nitrogen heavy metal ion industrial wastewater processing dress
Put.
Background technology
The very high organic wastewater of salinity can be produced in some industrial process such as agricultural chemicals, pharmacy, chemical industry, printing and dyeing and food, is had
Salinity can be up to 15% even more high.Organic high-salinity wastewater also has substantial amounts of weight in addition to the salt of the high concentration contained itself
Metal ion, processing cost is caused to increase and influence water treatment effect.
But when occurring heavy metal ammino-complex in waste water, cause the ammonia of molecular state not only to be needed when with liquid phase separation
Overcome intermolecular force, it is also necessary to destroy coordinate bond, separating difficulty greatly improves, and causes such ammonia nitrogen waste water processing to be difficult to reach
Mark.
The content of the invention
It is an object of the present invention to solve heavy metal in waste water ammino-complex to remove halfway problem, there is provided a kind of
High ammonia nitrogen heavy metal ion industrial wastewater processing unit.
Especially, the invention provides a kind of high ammonia nitrogen heavy metal ion industrial wastewater processing unit, including:
PH adjusting meanss, the pH value of waste water is adjusted by receiving alkali lye, for being converted into the ammonium ion in the waste water
Amino molecule, and generate unnecessary hydroxide ion;
Stripper, it is connected with the PH adjusting meanss, for removing the heavy metal ion in the waste water;
Stripping device, its import are connected with the outlet of the stripper, to waste water progress ammonia nitrogen removal processing, including according to
Secondary connected stripping tower, short distance nitration unit and denitrification unit;
PH call-back devices, the outlet with the stripping device are connected, and the waste water after processing is neutralized;
Wherein, the stripper decomposes heavy metal complex, is combined with the hydroxide ion, generation precipitation.
Further, between the PH adjusting meanss and the stripper, between the stripper and the stripping device
It is respectively equipped with the first elevator pump and the second elevator pump.
Further, the alkali lye is in sodium hydroxide, calcium hydroxide, calcium oxide, potassium hydroxide, sodium carbonate or potassium carbonate
One kind or at least two combination.
Further, in addition to an air blower being aerated to the stripping tower and the short distance nitration unit.
Further, the stripping tower is internally provided with a heater.
Further, a heat exchanger is provided between the PH adjusting meanss and the stripping device.
Further, the composition of tower shell material of the stripper is metal.
Further, the waste water is 10-20S in the residence time of the stripper.
Further, in addition to PH controllers and PH sensor, for the PH adjusting meanss and/or PH call-back devices
Automatically adjust.
The high ammonia nitrogen heavy metal ion industrial wastewater processing unit of the present invention, makes heavy metal complex by using stripper
Decompose, combined with the hydroxide ion, generation precipitation, remove heavy metal in waste water, avoid directly discharge from causing shadow to environment
Ring, ammonia nitrogen removal processing is then carried out to waste water using stripping device.
Further, in high ammonia nitrogen heavy metal ion industrial wastewater processing unit of the invention, PH adjusting meanss and stripping
A heat exchanger is provided between tower, reduces energy consumption.
Further, high ammonia nitrogen heavy metal ion industrial wastewater processing unit of the invention is also equipped with one and blown described
The air blower that de- tower and the short distance nitration unit are aerated, improve efficiency.
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of the present invention are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.In accompanying drawing:
Fig. 1 is the schematic apparatus figure of processing unit according to an embodiment of the invention;
Fig. 2 is the schematic apparatus figure of processing unit in accordance with another embodiment of the present invention.
In figure mark for:
1-PH adjusting meanss, 2- strippers, 3- stripping devices, 4-PH call-back devices, 5- heat exchangers, the elevator pumps of 6- first,
The elevator pumps of 7- second, 31- stripping towers, 32- short distance nitration units, 33- denitrification units, 34- heaters, 35- air blowers.
Embodiment
Fig. 1 is the schematic apparatus figure of processing unit according to an embodiment of the invention.As shown in figure 1, processing unit
It may include:
PH adjusting meanss 1, the pH value of waste water is adjusted by receiving alkali lye, for making the ammonium ion in waste water be converted into ammonia point
Son, and generate unnecessary hydroxide ion;
Stripper 2, it is connected with PH adjusting meanss 1, for removing the heavy metal ion in waste water;
Stripping device 3, its import are connected with the outlet of stripper 2, carry out ammonia nitrogen removal processing to waste water, including be sequentially connected
Stripping tower, short distance nitration unit and denitrification unit;
PH call-back devices 4, the outlet with stripping device 3 are connected, and the waste water after processing is neutralized;
Wherein, stripper 2 decomposes heavy metal complex, is combined with hydroxide ion, generation precipitation.
The high ammonia nitrogen heavy metal ion industrial wastewater processing unit of the present invention, is complexed heavy metal by using stripper 2
Thing decomposes, and is combined with hydroxide ion, generation precipitation, removes heavy metal in waste water, avoids directly discharge from impacting environment,
Then ammonia nitrogen removal processing is carried out to waste water using stripping device 3.
The processing step of the processing system of one embodiment of the invention as shown in Figure 1 includes:
Alkali is first added to adjust PH to 10-11 containing high ammonia nitrogen heavy metal wastewater thereby by being collected in PH adjusting meanss 1;Make in waste water
Ammonium ion be converted into amino molecule, and unnecessary hydroxide ion be present;
Alkaline high-strength ammonia nitrogen waste water introduces stripper 2, decomposes heavy metal ammino-complex, in heavy metal ion and waste water
Unnecessary hydroxide ion combines, and generation precipitation, is stripped by the steam flow and Steam pressure control of control input stripper 2
The temperature of tower 2, it is 185 DEG C to make bottom temperature, and the temperature at the 10m of tower reactor top is 175 DEG C;
Then waste water is introduced into stripping tower 31, the most ammonia-nitrogen stripping in waste water is gone out, enters back into short distance nitration list
Member 32, remaining ammonia nitrogen continues to be oxidized to nitrite nitrogen in the presence of ammonia oxidation bacteria after stripping, subsequently into denitrification list
Member 33, in the presence of denitrifying bacteria, nitrite nitrogen is reduced into nitrogen and discharged;
The waste water after processing is finally delivered to acid adding in PH call-back devices and adjusts back PH to 6-9.
The present invention makes ammonium ion be converted into amino molecule by adding alkali in the high-concentration ammonia nitrogenous wastewater containing heavy metal, and
Unnecessary hydroxide ion be present;The temperature of stripper 2 is controlled with steam pressure by the steam flow of control input stripper 2
Degree distribution, liquid temperature province certain in stripper 2 is kept for certain residence time, make heavy metal ammino-complex point
Solution, and combined with hydroxide ion unnecessary in waste water, generation precipitation, so as to complete the complexing of the solution of heavy metal ammino-complex.
Amino molecule is transferred to gas phase by stripper 2, so as to realize the removing of part ammonia nitrogen in waste water simultaneously.
The process that the heavy metal ammino-complex of the present invention is decomposed and combined with hydroxide ion, can pass through control input vapour
The steam flow of stripper 2 controls the Temperature Distribution of stripper 2 with steam pressure, makes liquid certain temperature area in stripper 2
Domain is kept for certain residence time complete.Certain temperature region and certain residence time can be by those skilled in the art according to public affairs
Know that general knowledge and experience are designed, selected.
In order to improve the stability of efficiency and technological process, between PH adjusting meanss 1 and stripper 2, stripper 2 and blow
The first elevator pump 6 and the second elevator pump 7 are respectively equipped between de- device 3.
In an embodiment of the present invention, alkali lye is sodium hydroxide, calcium hydroxide, calcium oxide, potassium hydroxide, sodium carbonate or carbon
One kind or at least two combination in sour potassium.Such as sodium hydroxide, sodium carbonate, potassium carbonate, calcium oxide and potassium hydroxide, hydrogen-oxygen
Change sodium and potassium hydroxide, preferably sodium carbonate and potassium hydroxide etc., sodium hydroxide and/or potassium hydroxide.Can be by ammonia nitrogen in high density
Waste water is adjusted to alkalescence and does not change the material of other properties of waste water all available for the implementation present invention.
In order to further improve efficiency, present treatment device is also carried out including one to stripping tower 31 and short distance nitration unit 32
The air blower 35 of aeration.Further, a heater 34 is additionally provided with inside stripping tower 31.
In order to reduce energy consumption, further, a heat exchanger 5 is provided between PH adjusting meanss 1 and stripping device 3.
In one embodiment of this invention, the composition of tower shell material of stripper 2 is metal, residence time of the waste water in stripper 2
For 10-20S.
For the ease of management, processing unit also includes PH controllers and PH sensor, for PH adjusting meanss 1 and/or
PH call-back devices 4 automatically adjust.
Fig. 2 is the schematic apparatus figure of the processing system of an alternative embodiment of the invention.Processing dress as shown in Figure 2
The handling process put is as follows:
Alkali is first added to adjust PH to 10-11 containing high ammonia nitrogen heavy metal wastewater thereby by being collected in PH adjusting meanss 1;Make in waste water
Ammonium ion be converted into amino molecule, and unnecessary hydroxide ion be present;
Alkaline high-strength ammonia nitrogen waste water is introduced by stripper 2 by the first elevator pump 6, decomposes heavy metal ammino-complex,
Heavy metal ion is combined with hydroxide ion unnecessary in waste water, generation precipitation, passes through the steam flow of control input stripper 2
With the temperature of Steam pressure control stripper 2, it is 185 DEG C to make bottom temperature, and the temperature at the 10m of tower reactor top is 175 DEG C, and waste water exists
The residence time of stripper 2 is 15S;
Waste water is introduced to the stripping tower 31 of heater 34 by the second elevator pump 7 again, using the progress of air blower 35
Aeration, the most ammonia-nitrogen stripping in waste water is gone out, enters back into short distance nitration unit 32, remaining ammonia nitrogen is in ammonia oxygen after stripping
Continue to be oxidized to nitrite nitrogen in the presence of change bacterium, it is sub- in the presence of denitrifying bacteria subsequently into denitrification unit 33
Nitrate nitrogen is reduced into nitrogen and discharged;
Waste water after processing is delivered to acid adding in PH call-back devices 4 and adjusts back PH to 6-9, waste water specific as follows returns into PH
After adjusting tank, the pH value detected is changed into signal specific via PH sensor and is sent to PH controllers, PH controllers are according to connecing
The signal behavior opening controlling valve door received, acid adding in tank is adjusted to PH by measuring pump, when the pH value that PH probes detect connects
When near, stop acid adding.Staff can read the pH value of waste water in state's regulating reservoir on meter displaying device;
Heat exchanger 5 is flowed through by outlet pipe via the hot waste water after processing, by heat exchanger 5 and again flows through heat exchange
The untreated high concentration of hydrogen nitrogen waste water raw water of device 5 carries out heat exchange.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (9)
1. a kind of high ammonia nitrogen heavy metal ion industrial wastewater processing unit, including:
PH adjusting meanss, the pH value of waste water is adjusted by receiving alkali lye, for making the ammonium ion in the waste water be converted into ammonia point
Son, and generate unnecessary hydroxide ion;
Stripper, it is connected with the PH adjusting meanss, for removing the heavy metal ion in the waste water;
Stripping device, its import are connected with the outlet of the stripper, and ammonia nitrogen removal processing, including phase successively are carried out to the waste water
Stripping tower, short distance nitration unit and denitrification unit even;With
PH call-back devices, the outlet with the stripping device are connected, and the waste water after processing is neutralized;
Wherein, the stripper decomposes heavy metal complex, is combined with the hydroxide ion, generation precipitation.
2. processing unit according to claim 1, it is characterised in that between the PH adjusting meanss and the stripper,
The first elevator pump and the second elevator pump are respectively equipped between the stripper and the stripping device.
3. processing unit according to claim 2, it is characterised in that the alkali lye is sodium hydroxide, calcium hydroxide, oxidation
One kind or at least two combination in calcium, potassium hydroxide, sodium carbonate or potassium carbonate.
4. device according to claim 3, it is characterised in that also including one to the stripping tower and the short distance nitration
The air blower that unit is aerated.
5. processing unit according to claim 4, it is characterised in that the stripping tower is internally provided with a heater.
6. processing unit according to claim 5, it is characterised in that characterized in that, the PH adjusting meanss with it is described
A heat exchanger is provided between stripping device.
7. processing unit according to claim 6, it is characterised in that the composition of tower shell material of the stripper is metal.
8. processing unit according to claim 7, it is characterised in that the waste water is in the residence time of the stripper
10-20S。
9. processing unit according to claim 8, it is characterised in that also including PH controllers and PH sensor, for pair
The PH adjusting meanss and/or PH call-back devices automatically adjust.
Priority Applications (1)
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CN201711288248.2A CN107814465A (en) | 2017-12-07 | 2017-12-07 | A kind of high ammonia nitrogen heavy metal ion industrial wastewater processing unit |
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CN201711288248.2A CN107814465A (en) | 2017-12-07 | 2017-12-07 | A kind of high ammonia nitrogen heavy metal ion industrial wastewater processing unit |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110104824A (en) * | 2019-04-19 | 2019-08-09 | 中石化宁波工程有限公司 | A kind of pretreatment method for wastewater of high rigidity containing ammonia |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102942280A (en) * | 2012-11-14 | 2013-02-27 | 北京赛科康仑环保科技有限公司 | Method for decomplexing heavy metal ammonia complex in high-concentration ammonia-nitrogen wastewater |
CN105152470A (en) * | 2015-08-24 | 2015-12-16 | 长沙欣皙原环保科技有限责任公司 | Equipment and process for treating high-concentration ammonia-nitrogen wastewater |
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2017
- 2017-12-07 CN CN201711288248.2A patent/CN107814465A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102942280A (en) * | 2012-11-14 | 2013-02-27 | 北京赛科康仑环保科技有限公司 | Method for decomplexing heavy metal ammonia complex in high-concentration ammonia-nitrogen wastewater |
CN105152470A (en) * | 2015-08-24 | 2015-12-16 | 长沙欣皙原环保科技有限责任公司 | Equipment and process for treating high-concentration ammonia-nitrogen wastewater |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110104824A (en) * | 2019-04-19 | 2019-08-09 | 中石化宁波工程有限公司 | A kind of pretreatment method for wastewater of high rigidity containing ammonia |
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Application publication date: 20180320 |