CN108862827A - A kind of processing method of ammonia nitrogen waste water - Google Patents
A kind of processing method of ammonia nitrogen waste water Download PDFInfo
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- CN108862827A CN108862827A CN201810645578.0A CN201810645578A CN108862827A CN 108862827 A CN108862827 A CN 108862827A CN 201810645578 A CN201810645578 A CN 201810645578A CN 108862827 A CN108862827 A CN 108862827A
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- waste water
- ammonia nitrogen
- nitrogen waste
- aeration
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
Abstract
The invention discloses a kind of processing methods of ammonia nitrogen waste water.The processing method of the ammonia nitrogen waste water includes that pH adjusts stage, solids-liquid separation step, stripping stage, heavy metal ion adsorbed stage, guanite precipitate phase and SBR processing stage.The processing method of ammonia nitrogen waste water provided by the invention uses ammonia-nitrogen desorption+guanite precipitating+SBR combination, and the load of ammonia nitrogen waste water subsequent biochemical processing can be effectively reduced, and recycles nitrogen phosphor resource, reduces cost for wastewater treatment.
Description
Technical field
The present invention relates to technical field of waste water processing, specifically, being related to a kind of processing method of ammonia nitrogen waste water.
Background technique
In food production, the high production waste water of ammonia-nitrogen content is often generated, if being discharged directly into water body or storage
Place is improper, is entered water body by rain-out, it would be possible to cause the severe exacerbation of surface water or quality of groundwater.To surface water
Influence be then mainly shown as, after large amount of organic matter enters water body, the decomposition of organic matter by the dissolved oxygens in a large amount of consumption water,
Keep water body smelly；After dissolved oxygen sharp fall in water body, large amount of organic matter can continue to decompose under anaerobic, point
The toxic gases such as methane, hydrogen sulfide will be generated in solution, lead to aquatile mortality；A large amount of suspended matters in waste water can make
Water body is muddy, reduces the photosynthesis of algae in water, limits the normal activity of aquatile, make the water sensitive to organic pollution
Biology is gradually dead, to be further exacerbated by water bottom anoxic, makes the reduction of water body assimilative capacicy；Nitrogen, phosphorus can make water body rich
The result of nutrient laden, eutrophication can make NO3-N and NO2-N excessive concentration in water body, if people and animals' long-term drinking can cause
Poisoning, and the growth of some toxic algaes and mass propagation can discharge a large amount of toxin in water body, lead to a large amount of of aquatic animal
Death, to seriously destroy water ecology balance.
From the point of view of existing ammonia nitrogenous wastewater treatment technology, there is following some deficiencies：1, most of to take at anaerobism level-one
Reason, has cut down most COD, but be not very high to the removal rate of nitrogen, phosphorus.2, nitrogen, phosphor resource cannot be recycled sufficiently,
It is discharged into water body and is easy water eutrophication.3, wastewater treatment expense is excessively high.
Summary of the invention
In order to solve above-mentioned existing ammonia nitrogenous wastewater treatment technology to the removal rate of nitrogen phosphorus be not it is very high, cannot to nitrogen phosphor resource
The excessively high technical problem of enough sufficiently recycling, wastewater treatment expense, the present invention provide a kind of processing method of ammonia nitrogen waste water, should
The processing method of ammonia nitrogen waste water uses ammonia-nitrogen desorption+guanite precipitating+SBR combination, and the subsequent life of ammonia nitrogen waste water can be effectively reduced
Change the load of processing, recycle nitrogen phosphor resource, reduces cost for wastewater treatment.
The present invention provides a kind of processing methods of ammonia nitrogen waste water, include the following steps：
Step 1: pH adjusts the stage：Ammonia nitrogen waste water is put into conditioning tank by water inlet pipe, it is molten that appropriate sodium hydroxide is added
Liquid mixes, and adjusts pH value to 10~11；
Step 2: solids-liquid separation step：The ammonia nitrogen waste water for regulating pH value is put into grid pond to be separated by solid-liquid separation；
Step 3: the stripping stage：The ammonia nitrogen waste water after separation of solid and liquid is pumped into stripping device, air progress is passed through
Stripping processing, obtains thick ammonia and denitrogenation liquid；It is absorbed after the thick ammonia washing, then with sulfuric acid solution, it is molten to obtain ammonium sulfate
Liquid；
Step 4: the heavy metal ion adsorbed stage：The denitrogenation liquid is carried out by active carbon layer heavy metal ion adsorbed
Processing；
Step 5: guanite precipitate phase：It will carry out that heavy metal ion adsorbed treated that the denitrogenation liquid is pumped into birds droppings
In stone settler, and magnesium salts is added and at the uniform velocity stirs, makes the n (Mg in the denitrogenation liquid2+)：N (orthophosphates)=1.45~
1.5：1, obtain guanite precipitating and denitrogenation dephosphorization liquid；
Step 6: SBR processing stage：The denitrogenation dephosphorization liquid is subjected to SBR processing.
It is described in the step 2 in a kind of preferred embodiment of the processing method of ammonia nitrogen waste water provided by the invention
The fine fack that grid spacing is 5~10mm is installed in grid pond.
It is described in the step 3 in a kind of preferred embodiment of the processing method of ammonia nitrogen waste water provided by the invention
Stripping device uses stripping tower, and air is blown up by blower from tower bottom, and the ammonia nitrogen waste water after separation of solid and liquid is blown from described
The top of de- tower contacts after being showered into the stripping tower inside with air inversion, completes mass transport process, obtains thick ammonia and denitrogenation
Liquid.
It is described in the step 3 in a kind of preferred embodiment of the processing method of ammonia nitrogen waste water provided by the invention
The gas liquid ratio of the ammonia nitrogen waste water after air and separation of solid and liquid is 60:1, the concentration of the sulfuric acid solution is 0.3mol/L.
It is described in the step 5 in a kind of preferred embodiment of the processing method of ammonia nitrogen waste water provided by the invention
Magnesium salts is by magnesium chloride and magnesia in mass ratio 1:1~1.5 ratio is mixed, the 30 minutes time at the uniform velocity stirred.
It is described in the step 6 in a kind of preferred embodiment of the processing method of ammonia nitrogen waste water provided by the invention
The process of SBR processing includes water inlet phase, reaction phase, precipitating phase, drainage period and lay-up period；Wherein, when the water inlet of the progress phase
Between be 2 hours, and be aerated using Limited Aeration mode；The reaction time of the reaction phase is 4 hours；The precipitating phase
Sedimentation time is 1.5 hours；The standby time of the lay-up period is 2 hours.
In a kind of preferred embodiment of the processing method of ammonia nitrogen waste water provided by the invention, the aeration includes the first exposure
Gas stage and the second aeration phase, first aeration phase are aerated using nanometer aeration device, aeration rate 1L/
Min, aeration time 1.5 hours；Start second aeration phase after first aeration phase terminates 1 hour, described
Two aeration phases are aerated using conventional aeration device, aeration rate 0.8L/min, and aeration time 1 hour.
Compared to the prior art, the processing method of ammonia nitrogen waste water provided by the invention has the advantages that：
One, the present invention organically combines ammonia-nitrogen desorption, guanite precipitating and SBR processing, and it is useless that ammonia nitrogen can be effectively reduced
The load of water subsequent biochemical processing, recycles nitrogen phosphor resource, reduces cost for wastewater treatment；Meanwhile first ammonia nitrogen waste water pH value being carried out
It adjusts, then successively carries out ammonia-nitrogen desorption, guanite precipitating and SBR processing, can effectively avoid in ammonia nitrogen waste water treatment process again
PH adjusting is carried out, processing step is reduced.
Two, by setting grid pond, the sundries such as suspended matter and the colloid in ammonia nitrogen waste water can be effectively removed.
Three, the magnesium salts being mixed using magnesium chloride and magnesia, can be in the case where outer plus alkaline matter adjust pH
Ammonia nitrogen waste water treatment effect is effectively ensured；For magnesium chloride is used alone, medicament expense can be effectively saved, is further dropped
Low ammonia nitrogen waste water processing cost.
Four, by the way of stage aeration, SBR device can be effectively improved to the removal rate of pollutant, guarantee effluent quality.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The processing method of the ammonia nitrogen waste water includes the following steps：
(1) pH adjusts the stage：Ammonia nitrogen waste water is put into conditioning tank by water inlet pipe, appropriate sodium hydroxide solution is added,
It mixes, adjusts pH value to 10~11；
(2) solids-liquid separation step：The ammonia nitrogen waste water for regulating pH value is put into grid pond to be separated by solid-liquid separation；It is described
The fine fack that grid spacing is 5~10mm is installed in grid pond.
(3) the stripping stage：The ammonia nitrogen waste water after separation of solid and liquid is pumped into stripping device, air is passed through and carries out stripping
Processing, obtains thick ammonia and denitrogenation liquid；It is absorbed after the thick ammonia washing, then with sulfuric acid solution, obtains ammonium sulfate；
The gas liquid ratio of the ammonia nitrogen waste water after the air and separation of solid and liquid is 60:1, the concentration of the sulfuric acid solution is
0.3mol/L；
Specifically, the stripping device uses stripping tower, packing material is filled in the inside of stripping tower；Air is by blower
It is blown up from tower bottom, the ammonia nitrogen waste water after separation of solid and liquid is showered into inside the stripping tower from the top of the stripping tower
Packing material on form water droplet, water droplet is fallen along the gap time the of packing material, is contacted with air inversion, is completed mass transfer mistake
Journey obtains thick ammonia and denitrogenation liquid；
(4) the heavy metal ion adsorbed stage：The denitrogenation liquid is subjected to heavy metal ion adsorbed processing by active carbon layer；
(5) guanite precipitate phase：It will carry out that heavy metal ion adsorbed treated that the denitrogenation liquid is pumped into guanite sinks
In the device of shallow lake, and magnesium salts is added and at the uniform velocity stirs, makes the n (Mg in the denitrogenation liquid2+)：N (orthophosphates)=1.45~1.5：
1, obtain guanite precipitating and denitrogenation dephosphorization liquid；
The magnesium salts is by magnesium chloride and magnesia in mass ratio 1:1~1.5 ratio is mixed, the time at the uniform velocity stirred
30 minutes；
(6) SBR processing stage：The denitrogenation dephosphorization liquid is subjected to SBR processing.
Specifically, the SBR treatment process includes water inlet phase, reaction phase, precipitating phase, drainage period and lay-up period；Wherein, institute
The flooding time for stating the progress phase is 2 hours, and is aerated using Limited Aeration mode；The reaction time of the reaction phase is 4
Hour；The sedimentation time of the precipitating phase is 1.5 hours；The standby time of the lay-up period is 2 hours；
The aeration includes the first aeration phase and the second aeration phase, and first aeration phase is filled using nanometer aeration
It sets and is aerated, aeration rate 1L/min, aeration time 1.5 hours；Start after first aeration phase terminates 1 hour
Second aeration phase, second aeration phase are aerated using conventional aeration device, aeration rate 0.8L/min,
Aeration time 1 hour；
It is mainly had the advantage that using nanometer aeration：(1) nano bubble large specific surface area, specific surface area is bigger, gas with
The contact surface area of water is bigger, and mass-transfer efficiency is higher.(2) the nano bubble rate of climb is slow, and gas transfer is high-efficient, no waste.
The surface tension of nano bubble gas-liquid interface can bear the pressure of gas in bubble.The bubble of diameter 100nm can bear 30
The pressure of a atmospheric pressure is without rupturing；Therefore, nanometer high pressure bubble can increase gas rate of dissolution.(3) activity is high, can
To generate free radicals.The high concentration ion gathered on nano bubble interface can put aside a large amount of chemical energy.Bubble size is smaller,
Charge density is higher.The hydroxyl radical free radical that nano bubble generates when disappearing has strong oxidation, normal condition in degradable water
Under be difficult to the pollutant of oxygenolysis, realize second of water quality purification function in addition to providing Dissolved Oxygen in Water for microorganism.
In addition, terminating to carry out conventional aeration again after a certain period of time in nanometer aeration, can effectively avoid because nano bubble is in ammonia
The residence time is too long and total tp removal rate is caused to reduce in nitrogen waste water.
The processing method of ammonia nitrogen waste water provided by the invention has the advantages that：
One, the present invention organically combines ammonia-nitrogen desorption, guanite precipitating and SBR processing, and it is useless that ammonia nitrogen can be effectively reduced
The load of water subsequent biochemical processing, recycles nitrogen phosphor resource, reduces cost for wastewater treatment；Meanwhile first ammonia nitrogen waste water pH value being carried out
It adjusts, then successively carries out ammonia-nitrogen desorption, guanite precipitating and SBR processing, can effectively avoid in ammonia nitrogen waste water treatment process again
PH adjusting is carried out, processing step is reduced.
Two, by setting grid pond, the sundries such as suspended matter and the colloid in ammonia nitrogen waste water can be effectively removed.
Three, the magnesium salts being mixed using magnesium chloride and magnesia, can be in the case where outer plus alkaline matter adjust pH
Ammonia nitrogen waste water treatment effect is effectively ensured；For magnesium chloride is used alone, medicament expense can be effectively saved, is further dropped
Low ammonia nitrogen waste water processing cost.
Four, by the way of stage aeration, SBR device can be effectively improved to the removal rate of pollutant, guarantee effluent quality.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (7)
1. a kind of processing method of ammonia nitrogen waste water, which is characterized in that include the following steps：
Step 1: pH adjusts the stage：Ammonia nitrogen waste water is put into conditioning tank by water inlet pipe, appropriate sodium hydroxide solution is added,
It mixes, adjusts pH value to 10~11；
Step 2: solids-liquid separation step：The ammonia nitrogen waste water for regulating pH value is put into grid pond to be separated by solid-liquid separation；
Step 3: the stripping stage：The ammonia nitrogen waste water after separation of solid and liquid is pumped into stripping device, air is passed through and carries out stripping
Processing, obtains thick ammonia and denitrogenation liquid；It is absorbed after the thick ammonia washing, then with sulfuric acid solution, obtains ammonium sulfate；
Step 4: the heavy metal ion adsorbed stage：The denitrogenation liquid is subjected to heavy metal ion adsorbed processing by active carbon layer；
Step 5: guanite precipitate phase：It will carry out that heavy metal ion adsorbed treated that the denitrogenation liquid is pumped into guanite sinks
In the device of shallow lake, and magnesium salts is added and at the uniform velocity stirs, makes the n (Mg in the denitrogenation liquid2+)：N (orthophosphates)=1.45~1.5：
1, obtain guanite precipitating and denitrogenation dephosphorization liquid；
Step 6: SBR processing stage：The denitrogenation dephosphorization liquid is subjected to SBR processing.
2. the processing method of ammonia nitrogen waste water according to claim 1, which is characterized in that in the step 2, the grid
The fine fack that grid spacing is 5~10mm is installed in pond.
3. the processing method of ammonia nitrogen waste water according to claim 1, which is characterized in that in the step 3, the stripping
Device uses stripping tower, and air is blown up by blower from tower bottom, and the ammonia nitrogen waste water after separation of solid and liquid is from the stripping tower
Top be showered into the stripping tower inside after contacted with air inversion, complete mass transport process, obtain thick ammonia and denitrogenation liquid.
4. the processing method of ammonia nitrogen waste water according to claim 3, which is characterized in that in the step 3, the air
Gas liquid ratio with the ammonia nitrogen waste water after separation of solid and liquid is 60:1, the concentration of the sulfuric acid solution is 0.3mol/L.
5. the processing method of ammonia nitrogen waste water according to claim 1, which is characterized in that in the step 5, the magnesium salts
By magnesium chloride and magnesia in mass ratio 1:1~1.5 ratio is mixed, the 30 minutes time at the uniform velocity stirred.
6. the processing method of ammonia nitrogen waste water according to claim 1, which is characterized in that in the step 6, at the SBR
The process of reason includes water inlet phase, reaction phase, precipitating phase, drainage period and lay-up period；Wherein, the flooding time of the water inlet phase is 2
Hour, and be aerated using Limited Aeration mode；The reaction time of the reaction phase is 4 hours；The precipitating of the precipitating phase
Time is 1.5 hours；The standby time of the lay-up period is 2 hours.
7. the processing method of ammonia nitrogen waste water according to claim 6, which is characterized in that the aeration includes the first aeration rank
Section and the second aeration phase, first aeration phase are aerated using nanometer aeration device, and aeration rate 1L/min exposes
The gas time 1.5 hours；Start second aeration phase, second aeration after first aeration phase terminates 1 hour
Stage is aerated using conventional aeration device, aeration rate 0.8L/min, and aeration time 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645578.0A CN108862827A (en) | 2018-06-21 | 2018-06-21 | A kind of processing method of ammonia nitrogen waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810645578.0A CN108862827A (en) | 2018-06-21 | 2018-06-21 | A kind of processing method of ammonia nitrogen waste water |
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| CN108862827A true CN108862827A (en) | 2018-11-23 |
Family
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| CN201810645578.0A Withdrawn CN108862827A (en) | 2018-06-21 | 2018-06-21 | A kind of processing method of ammonia nitrogen waste water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104848A (en) * | 2019-06-17 | 2019-08-09 | 武汉兴天宇环境股份有限公司 | A kind of ardealite dump leaching wastewater treatment method |
| CN110845054A (en) * | 2019-11-07 | 2020-02-28 | 哈尔滨工程大学 | Method and device for enhanced denitrification and nitrogen and phosphorus recovery by struvite cyclic crystallization method |
| CN116947271A (en) * | 2023-09-21 | 2023-10-27 | 青岛锦龙弘业环保有限公司 | Sewage treatment method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5370555A (en) * | 1976-12-07 | 1978-06-23 | Ebara Infilco Co Ltd | Method of treating organic waste water |
| CN1872724A (en) * | 2006-06-21 | 2006-12-06 | 哈尔滨工业大学 | Pretreatment method for wastewater of ammonia nitrogen in high density |
| CN102491597A (en) * | 2011-12-14 | 2012-06-13 | 南京大学 | Method for treating high-concentration nitrogenous organic wastewater |
| CN106277419A (en) * | 2015-05-29 | 2017-01-04 | 天津科技大学 | The method and apparatus that a kind of ammonia nitrogen waste water processes |
-
2018
- 2018-06-21 CN CN201810645578.0A patent/CN108862827A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5370555A (en) * | 1976-12-07 | 1978-06-23 | Ebara Infilco Co Ltd | Method of treating organic waste water |
| CN1872724A (en) * | 2006-06-21 | 2006-12-06 | 哈尔滨工业大学 | Pretreatment method for wastewater of ammonia nitrogen in high density |
| CN102491597A (en) * | 2011-12-14 | 2012-06-13 | 南京大学 | Method for treating high-concentration nitrogenous organic wastewater |
| CN106277419A (en) * | 2015-05-29 | 2017-01-04 | 天津科技大学 | The method and apparatus that a kind of ammonia nitrogen waste water processes |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104848A (en) * | 2019-06-17 | 2019-08-09 | 武汉兴天宇环境股份有限公司 | A kind of ardealite dump leaching wastewater treatment method |
| CN110845054A (en) * | 2019-11-07 | 2020-02-28 | 哈尔滨工程大学 | Method and device for enhanced denitrification and nitrogen and phosphorus recovery by struvite cyclic crystallization method |
| CN116947271A (en) * | 2023-09-21 | 2023-10-27 | 青岛锦龙弘业环保有限公司 | Sewage treatment method |
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Application publication date: 20181123 |
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