CN208136037U - A kind of new bio nitrogen fixation process processing high ammonia-nitrogen wastewater complexes - Google Patents
A kind of new bio nitrogen fixation process processing high ammonia-nitrogen wastewater complexes Download PDFInfo
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Abstract
The utility model discloses a kind of new bio nitrogen fixation processes to handle high ammonia-nitrogen wastewater complexes, belongs to sewage treatment field.Processing unit includes stripping tower, biological nitrogen fixation tower, waste water collector and cultivation device；The upper end of stripping tower is connected by appendix with biological nitrogen fixation tower；The lower end of stripping tower is connect by drainpipe with waste water collector bottom end；Biological nitrogen fixation tower lower end is connect by bacterium solution delivery pipe with cultivation device, and porous spray tube is arranged above the biological nitrogen fixation tower, and the bacterium solution of acid-producing microorganisms is delivered to porous spray tube by bacterium solution delivery pipe in the cultivation device, and setting partition wall forms water hole in cultivation device.The utility model utilizes the characteristic of lactic acid production of microorganism in the process of running, uses acid bacterium solution as the absorbent of ammonia nitrogen, avoids eliminating some potential safety problems using strong acid such as sulfuric acid, hydrochloric acid.
Description
Technical field
The utility model belongs to technical field of sewage, more specifically to a kind of processing of new bio nitrogen fixation process
High ammonia-nitrogen wastewater complexes and processing method.
Background technique
In recent years, ammonia and nitrogen pollution aggravates, and nitrogen-containing pollutant discharge pre-treatment is not complete enough, seriously endangers social environment and people
Body health, excessive ammonia nitrogen, which is discharged into water body, will lead to water eutrophication aggravation, and oxygen in water is sharply reduced, self-purification of water energy
Power decline, water quality deterioration.Therefore, the deamination work before discharge of wastewater is particularly important.
Ammonia nitrogen is a kind of ammonia principal mode present in waste water.Ammonia nitrogen waste water source is very extensive, such as the life of feed
Produce producer, monosodium glutamate manufactory, oil plant, chemical industry fertilizer plant etc. and pig breeding farm, dairy cow farm etc..Currently, ammonia nitrogen is
Through becoming most important exceeded pollutant in numerous waters.All blowdowns are required in the pollutant emission standard of the newest modification in China
Unit is discharged ammonia-nitrogen content and is less than 5mg/L, and total nitrogen is less than 15mg/L, and it is necessary to be distinctly claimed built and newly-built sewage treatment plant
Has corresponding sewage deep denitrogenation technology.
There are many ammonia nitrogenous wastewater treatment technology, and common mainly has：Blow-off method, break point chlorination method, chemical precipitation method, biology are de-
Nitrogen method, selective ion exchange, electroosmose process and liquid-film method, catalytic wet air oxidation etc..Wherein air stripping method deamination apparatus
Have the advantages that the simple easily operated, stabilised efficiency of equipment, it is also good for the removal effect of high-concentration ammonia nitrogenous wastewater, but study carefully it
Essence is only to convert gaseous form from the form of solubilised state for ammonia nitrogen, and be not of practical significance the upper pollution for eliminating ammonia nitrogen, one
As be further added by behind stripping acid solution absorb exhaust gas in ammonia, avoid stripping exhaust gas from directly emptying the secondary dirt for causing atmosphere
Dye, due to needing sulfuric acid in operating process, requires higher safety management level in production, has apparent safety hidden
Suffer from, also increase the requirement of equipment corrosion resistance, and require ammonium sulfate caused by further recycling acid solution absorbing ammonia nitrogen, increases
The complexity of technique and system.
Chinese Patent Application No. 201510808804.9, publication number CN201510808804 disclose a kind of high ammonia-nitrogen wastewater
Treatment process, this approach includes the following steps：High ammonia-nitrogen wastewater from flowing into conditioning tank, in conditioning tank to waste water carry out water,
Then the adjusting of water quality is promoted in pH adjustment pond with pump wastewater pH being increased to 10 or so；Waste water is pumped into two-stage ammonia nitrogen to blow
De- tower, using air by the ammonia nitrogen in high density stripping in waste water to low concentration, the ammonia nitrogen that stripping goes out is absorbed using dilute sulfuric acid.It should
Technique shortcoming is to need the absorbent for using sulfuric acid as ammonia nitrogen, increases very big safety wind in production and management
Danger.
102910788 B of Chinese patent Authorization Notice No. CN discloses a kind of waste water advanced denitrification process, including following step
Suddenly：(1) a certain amount of NaOH is added in microwave irradiation coagulating sedimentation, high-concentration ammonia nitrogenous wastewater, and adjusting pH value is 11~13,
Flocculant and coagulant carry out coagulating sedimentation under alkaline condition, obtain supernatant after precipitating；(2) supernatant obtained by step (1) is logical
Enter stripping tower；Spray thrower is provided at the top of stripping tower, middle part is equipped with multiple filling layers layer in tower body, and waste water is formed carefully through spray thrower
Liquid stream flows through packing layer；Air is sent by air blower in tower bottom aeration opening simultaneously, makes to carry out gas-liquid contact in filler surface；So
Stripping tail gas is allowed to enter the absorption cell for filling waste hydrochloric acid or Waste Sulfuric Acid absorbing liquid, afterwards to sponge part ammonia nitrogen；The patent document
It is equally that ammonia nitrogen is absorbed using inorganic acid, similarly, which is still to need to use hydrochloric acid or sulfuric acid as ammonia
The absorbent of nitrogen increases very big security risk in production and management.
Summary of the invention
1, it to solve the problems, such as
Aiming at the problem that directlying adopt the ammonia-contaminated gas that inorganic acid absorption stripping comes out in the prior art, the utility model
A kind of new bio nitrogen fixation process processing high ammonia-nitrogen wastewater device and processing method are provided, processing unit is using the replacement of biological nitrogen fixation tower
Traditional sulfuric acid absorption tower is absorbed the ammonia-contaminated gas that stripping comes out using the bacterium solution of acid-producing microorganisms, reduces the complexity of system
Property, it avoids in operating process using this security sensitive object of sulfuric acid, eliminates some potential safety problems.
2, technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of new bio nitrogen fixation process processing high ammonia-nitrogen wastewater complexes, including stripping tower, biological nitrogen fixation tower, waste water are received
Storage and cultivation device；The upper end of the stripping tower is connected by appendix with biological nitrogen fixation tower；The lower end of the stripping tower
It is connect by drainpipe with the waste water collector；Biological nitrogen fixation tower lower end is connect by bacterium solution delivery pipe with cultivation device,
Porous spray tube is set above the biological nitrogen fixation tower, and the bacterium solution of acid-producing microorganisms is defeated by bacterium solution delivery pipe in the cultivation device
It send to porous spray tube.
Preferably, it is equipped with partition wall in the cultivation device, the cultivation device is separated into two parts, the partition wall and cultivation
Water hole is set between device bottom of pond, is connected to cultivation device by water hole in partition wall bottom.The bacterium solution pH higher that reflux comes, utilizes nutrition
PH is gradually decreased after liquid culture for a period of time, is slow transitted through water hole and is flowed into the bacterium solution of the lower pH in the partition wall other side, leads to again
It crosses bacterium solution delivery pipe and is delivered to porous spray tube；The setting of partition wall and water hole is conducive to make to spray the bacterium solution in stripping tower
Lower pH value is kept, ensure that bacterium solution absorbs the ammonia nitrogen efficiency in stripping tower in exhaust gas.
It preferably, further include the pretreatment unit of high ammonia-nitrogen wastewater, the pretreatment unit is pH regulating device, waste water warp
Remove total suspended solid (TS) and adjust pH to 9~11 afterwards, and adjust the temperature to 20~35 DEG C, the waste water after adjusting, by into
Expects pipe is transported in stripping tower.
Preferably, porous water distributor is arranged in the stripping tower top, the gas transmission of setting export ammonia nitrogen above porous water distributor
Pipe；Several layers are set by the scattered filler one of waste water, the filler one is Pall ring under the porous water distributor；It is corresponding every
One layer of setting grid one, stripping tower downside also set up the ventilation blower for stripping ammonia nitrogen；If setting below the porous spray tube
Dried layer is by the scattered filler two of waste water, and the filler two is Pall ring, and corresponding each layer of setting grid two, bacterium is arranged in bottom end
Bacterium solution is discharged into cultivation device by liquid delivery pipe；Exhaust pipe is arranged in biological nitrogen fixation tower top end.High nitrogen after pretreatment is useless
After the water distributor that water is transported in stripping tower through feed pipe by top, it is scatter from top to bottom by filler, meanwhile, it is matched logical
Blower is divulged information to stripping tower, the ammonia-nitrogen desorption in waste water is come out, exhaust gas containing ammonia nitrogen is transported to biological nitrogen fixation tower bottom through appendix
End；Waste water after stripping flow to stripping tower bottom, drains into waste water collector through drainpipe；If setting below the porous spray tube
For dried layer by the scattered filler two of waste water, the filler two is Pall ring；Bacterium is arranged in corresponding each layer of setting grid two, bottom end
Bacterium solution is discharged into cultivation device by liquid delivery pipe；Exhaust pipe is arranged in biological nitrogen fixation tower top end；
Preferably, the waste water that the stripping tower stripping is crossed drains into waste water collector through drainpipe, through draining pump and drainpipe
Drain into subsequent anaerobic-aerobic processing unit.
Preferably, the bacterium solution in cultivation device is delivered to by bacterium solution delivery pipe by porous spray tube using bacterium solution delivery pump.
Preferably, the cultivation device setting nutrition pipeline supplies nutrient solution, and setting air supply pipe carries out aeration oxygen supply.
Preferably, each layer of setting filler passes in and out flange in the stripping tower and biological nitrogen fixation tower.Method is passed in and out by filler
Orchid more easily fills filler.
Preferably, the acid-producing microorganisms in the cultivation device are acidophilia Thiobacillus thioxidans.
It is flowed up after being entered by the exhaust gas containing ammonia nitrogen of appendix conveying from biological nitrogen fixation tower bottom end, while bacterium solution delivery pump
Bacterium solution in cultivation device is delivered to porous spray tube by bacterium solution delivery pipe, the gas from stripping tower in this way is from biological nitrogen fixation
During the bottom of tower flows up, the bacterium solution elution discharged from porous spray tube makes the ammonia nitrogen in gas be absorbed into bacterium
In liquid, final clean gas is arranged through exhaust pipe to atmosphere.The bacterium solution for absorbing ammonia nitrogen flow to biological nitrogen fixation tower bottom, passes through method
Orchid drains into cultivation device mid-board side through bacterium solution delivery pipe and carries out continuing culture growth, while by crossing water between cultivation device bottom of pond
Hole flows slowly into the partition wall other side, then is delivered to porous spray tube by bacterium solution delivery pipe and is re-used for absorbing ammonia nitrogen.
The present invention also provides a kind of methods using above-mentioned apparatus processing high ammonia-nitrogen wastewater, include the following steps：
1) high ammonia-nitrogen wastewater pH is adjusted to 9.0~11.0, removes total suspended solid, obtains supernatant；
2) supernatant described in step 1) is transported to the water distributor in stripping tower, and supernatant is dispersed by filler from top to bottom
It opens, is divulged information using ventilation blower into stripping tower, the ammonia-nitrogen desorption in waste water is come out；It is good that waste water after stripping drains into subsequent anaerobism
Oxygen processing unit carries out biochemical treatment；
3) the ammonia nitrogen exhaust gas that stripping comes out in step 2) flows up after entering from biological nitrogen fixation tower bottom end, while it is micro- to produce acid
Biological bacterium solution sprays downwards from porous spray tube, and the ammonia nitrogen flowed up is eluted by acid bacterium solution, is absorbed into ammonia nitrogen exhaust gas
In bacterium solution；
4) bacterium solution after absorbing ammonia nitrogen in step 3) is back to cultivation device mid-board side, and Additional nutrient solution continues to cultivate micro-
Bio-acidification, bacterium solution enter the partition wall other side by water hole；Due to having absorbed ammonia nitrogen, flow back the bacterium solution pH higher come, every
The setting of wall is mixed this part bacterium solution immediately with partition wall other side bacterium solution；Using nutrient solution by flow back come higher pH
PH is gradually decreased after bacterium solution culture for a period of time, is slow transitted through water hole and is flowed into the bacterium solution of the lower pH in the partition wall other side, again
For adsorbing ammonia nitrogen gas；The setting of partition wall and water hole, the bacterium solution for being used in absorption ammonia nitrogen remain lower pH value, protect
Bacterium solution has been demonstrate,proved to the absorption efficiency of ammonia nitrogen；
5) step 4) the partition wall other side bacterium solution is again introduced into step 3) through bacterium solution delivery pipe absorbs ammonia nitrogen step.
Preferably, acid-producing microorganisms bacterium solution pH is 1.2~2.0 in step 3).
Preferably, acid-producing microorganisms described in step 3) are acidophilia Thiobacillus thioxidans.
The effect of acid-producing microorganisms Thiobacillus thioxidans is in cultivation device：The nutrition containing elemental sulfur is added into cultivation device
Liquid, elemental sulfur can be converted to sulfuric acid by acid-producing microorganisms in cultivation device, and the pH of bacterium solution is made to drop to 2.0 hereinafter, effectively neutralizing
The ammonia nitrogen that stripping comes out in stripping tower, microorganism recycle the NH generated after neutralization4 +Fixed nitrogen is carried out, uses the microbial bacteria later
The excess sludge generated in liquid conditioning sewage disposal process, the nitrogen after being separated by solid-liquid separation in microbial cells are just fixed on mud cake
In, achieve the purpose that remove nitrogen in waste water.
3, beneficial effect
Compared with the prior art, the beneficial effects of the utility model are：
(1) it using the ammonia nitrogen generated in stripping tower in the utility model biological nitrogen fixation device processing high ammonia-nitrogen wastewater, utilizes
The biological nitrogen fixation tower connecting with cultivation device is as ammonia nitrogen absorption tower, using the characteristic of lactic acid production of microorganism, use acid bacterium solution as
The absorbent of ammonia nitrogen avoids eliminating some potential safety problems using strong acid such as sulfuric acid, hydrochloric acid；Ammonia nitrogen in waste water is through stripping
It is absorbed afterwards by the acid bacterium solution of acid-producing microorganisms, the bacterium solution after absorbing ammonia nitrogen again can be with circulation conveying to life after Solution culture method
Object fixed nitrogen tower absorbs ammonia nitrogen；Meanwhile the NH of generation4 +The sources of nitrogen that can be used as microorganism growth again, is transformed into micro-
In biomass, the excess sludge generated in microbial inoculum conditioning sewage disposal process is reused, after being separated by solid-liquid separation
Nitrogen in microbial cells achievees the purpose that remove nitrogen in waste water just by fixed nitrogen in mud cake.
(2) the utility model is equipped with partition wall among cultivation device, and cultivation device is separated into two parts, partition wall and cultivation device
Water hole is set between bottom of pond, is connected to two parts of cultivation device in partition wall bottom；The bacterium solution pH higher that reflux comes, setting partition wall make
This part bacterium solution is not mixed immediately with partition wall other side bacterium solution；Using nutrient solution by flow back come higher pH bacterium solution culture one
PH is gradually decreased after the section time, is slow transitted through water hole and is flowed into the bacterium solution of the lower pH in the partition wall other side, and absorption ammonia is re-used for
Nitrogen；The setting of partition wall and water hole, the bacterium solution for being used in absorption ammonia nitrogen remain lower pH value, effectively increase bacterium
Liquid is in fixed nitrogen tower to the absorption efficiency of ammonia nitrogen；
(3) acid-producing microorganisms that the utility model biological nitrogen fixation device utilizes need nitrogen as nutrition in growth course
Element, and the absorption to ammonia nitrogen can be achieved in bacterium solution pH value in 1.2~2.0 ranges, is inhaled with the bacterium solution of the acid-producing microorganisms
Receive the ammonia-contaminated gas that stripping comes out reduces the complexity of system, avoids in operating process and use compared with traditional blow-off method
This security sensitive object of sulfuric acid, eliminates some potential safety problems；
(4) using the microbial inoculum in addition to the absorbent as ammonia nitrogen, which may be used also the utility model
For use as the conditioning for the excess sludge that subsequent sewage treatment unit generates, after through being dehydrated when the nitrogen that is fixed up of microorganism it is final
Take system for handling out of together with mud cake；
(5) using the high ammonia-nitrogen wastewater of utility model device processing, waste water collector 3 is drained into through drainpipe 1
Nitrogen content in waste water reduces 95% or more；
(6) multiple filling layers layer is arranged in the utility model in stripping tower, can increase the contact that waste water is dried with ventilation blower
Ammonia nitrogen in waste water is discharged more by stripping in area；
(7) multiple filling layers layer is arranged in the utility model in biological nitrogen fixation tower, can increase connecing for acid bacterium solution and ammonia nitrogen
The time is touched, is absorbed ammonia nitrogen more thoroughly；
(8) bacterium solution is recycled in biological nitrogen fixation tower for the utility model, has saved cost of material.
Detailed description of the invention
Fig. 1 is that biological nitrogen fixation method handles high ammonia-nitrogen wastewater complexes schematic diagram in embodiment 1；
In figure：1, stripping tower；101, grid one；102, filler one；103, flange；104, filler passes in and out flange；105, into
Water pipe；106, porous water distributor；107, ventilation blower；108, flange；109, flange；110, drainpipe one；111, flange；112, defeated
Tracheae；2, biological nitrogen fixation tower；201, flange；202, filler two；203, grid two；204, the porous spray tube of bacterium solution；205, filler
Pass in and out flange；206, flange；207, flange；208, bacterium solution delivery pipe；209, flange；210, exhaust pipe；3, waste water collector；
301, draining pump；302, drainpipe two；4, cultivation device；401, partition wall；402, bacterium solution delivery pump；403, bacterium solution delivery pipe；404,
Nutrition pipeline；405, air supply pipe；406, water hole.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of new bio nitrogen fixation process provided by the utility model handles high ammonia-nitrogen wastewater complexes, it is main
It to include stripping tower 1, biological nitrogen fixation tower 2, waste water collector 3, cultivation device 4 and other connector parts.
Filler 1 is filled in 1 cavity of stripping tower, and is divided into several layers, is connected between each layer by flange 103, each layer
Between be equipped with grid 1, each layer set filler disengaging flange 104.
Filling filler 2 202 is simultaneously divided into several layers in 2 cavity of biological nitrogen fixation tower, sets grid 2 203 between each layer, each layer it
Between with flange 201 connect, by filler pass in and out flange 205 fill filler 2 202,2 upper end of biological nitrogen fixation tower sets the porous spray of bacterium solution
Orchid 207 and bacterium solution delivery pipe 208 are tried in shower pipe 204, bottom.
Waste water collector 3 is used to collect the waste water after 1 stripping of stripping tower, then through 2 302 row of draining pump 301 and drainpipe
It is further processed to subsequent processing units.
There is partition wall 401 among cultivation device 4, cultivation device 4 is separated into two parts, is set between 4 bottom of pond of partition wall 401 and cultivation device
Water hole 406 is connected to 4 two parts of cultivation device in 401 bottom of partition wall.In addition, in order to meet the needs of bacterium solution growth, cultivation
Device 4 is provided with nutrition pipeline 404 and supplies nutrient solution (ingredient is：Elemental sulfur 2g/L, FeSO420g/L), it is provided with gas supply
Pipe 405 carries out aeration oxygen supply.
It is following it is used in the examples processing high ammonia-nitrogen wastewaters devices be：Stripping tower basic size isHigh 7m, is filled out
Material is divided into 3 layers, and every layer of packed height is 1.2m, and mating ventilation blower ventilation quantity is 15000m3/ h, wind pressure 2500Pa；Biology is solid
Nitrogen column foot sheet having a size ofHigh 7m, filler are also divided into 3 layers, and every layer of packed height is 1.2m；Waste water collector basic size
For 3m × 3m × 2.5m, cultivation device basic size is 4m × 2m × 5m, and is separated into two parts with partition wall, keeps each section basic
Having a size of 2m × 2m × 5m, water hole is having a size of 0.4m × 0.4m.
Using the method for above-mentioned apparatus processing high ammonia-nitrogen wastewater, include the following steps：
1) high ammonia-nitrogen wastewater adjusts pH to 9.0~11.0, adjusts the temperature to by pre-treatment removal total suspended solid (TS)
Supernatant is obtained after 20~35 DEG C；
2) supernatant is transported to the water distributor 106 in stripping tower 1 through water inlet pipe 105, and waste water is from top to bottom by filler 1
It spreads out, matched ventilation blower 107 divulges information to stripping tower 1 and (has the connection of flange 108 between ventilation blower 107 and stripping tower 1), will
Ammonia-nitrogen desorption in waste water comes out, and exhaust gas containing ammonia nitrogen is transported to biology through appendix 112 (having flange 111 to connect with stripping tower 1)
2 bottom end of fixed nitrogen tower, and there is flange 206 to connect appendix 112 with biological nitrogen fixation tower 2.Waste water after stripping flow to 1 bottom of stripping tower
Portion drains into waste water collector 3 through drainpipe 1 (having flange 109 to connect with stripping tower 1).
3) exhaust gas containing ammonia nitrogen flows up after entering from 2 bottom end of biological nitrogen fixation tower, while bacterium solution delivery pump 402 is by cultivation device
Bacterium solution in 4 is delivered to porous spray tube 204 by bacterium solution delivery pipe 403, and the gas in this way from stripping tower 1 is from biological nitrogen fixation
During the bottom of tower 2 flows up, the bacterium solution elution discharged from porous spray tube 204 is absorbed the ammonia nitrogen in gas
Into bacterium solution, final clean gas is through 210 row of exhaust pipe to atmosphere.
4) bacterium solution for absorbing ammonia nitrogen flow to 2 bottom of biological nitrogen fixation tower, be equipped with bacterium solution delivery pipe 208, and by flange 207 with
Biological nitrogen fixation tower 2 is connected, and the bacterium solution for absorbing ammonia nitrogen drains into cultivation device 4 through bacterium solution delivery pipe 208 continue culture growth.
5) acid bacterium solution after cultivation slowly enters the partition wall other side from water hole 406, then is led to by bacterium solution delivery pump 402
It crosses bacterium solution delivery pipe 403 and is delivered to porous spray tube 204, be re-used for absorbing ammonia nitrogen.
Embodiment 1
Certain pig breeding farm is handled using biological nitrogen fixation method provided by the utility model processing high ammonia-nitrogen wastewater complexes
(processing sewage quantity is 5t/h) to waste water, and ammonia nitrogen concentration is 846mg/L in waste water, and waste water enters before this complexes by pre-treatment
It removes total suspended solid (TS), and adjusts pH to 9.0~11.0,20~35 DEG C are adjusted the temperature to, in different pH and temperature
Under the conditions of, ventilation blower operating condition is that ventilation quantity is 15000m3/ h, wind pressure 2500pa, and be trained with Thiobacillus thioxidans
The acid bacterium solution that pH is 1.8, it is as shown in the table through ammonia nitrogen concentration in this complexes processed waste water.
As shown in table 1, when wastewater pH=11, when temperature is 35 DEG C, NH in the exhaust gas through ventilation blower stripping out3Concentration
For 265mg/m3, the flow of bacterium solution is 3m in corresponding biological nitrogen fixation tower3When/h, bacterium solution pH are 1.8, the absorptivity of ammonia nitrogen reaches
99.1%.Ammonia-nitrogen content is reduced to 51mg/L by 846mg/L in waste water after stripping tower stripping.
Ammonia-nitrogen content (mg/L) after certain the pig breeding farm wastewater treatment of table 1
Embodiment 2
Certain dairy cow farm is handled using biological nitrogen fixation method provided by the utility model processing high ammonia-nitrogen wastewater complexes
(processing sewage quantity is 5t/h) to waste water, and ammonia nitrogen concentration is 392mg/L in waste water, and waste water enters before this complexes by pre-treatment
TS is removed, and adjusts pH to 9.0~11.0, adjusts the temperature to 20~35 DEG C, under the conditions of different pH and temperature, ventilation blower
Operating condition is that ventilation quantity is 15000m3/ h, wind pressure 2500Pa, and the acidity that pH is 1.2 is trained with Thiobacillus thioxidans
Bacterium solution, it is as shown in the table through ammonia nitrogen concentration in this complexes processed waste water.
As shown in table 2, when wastewater pH=9.0, when temperature is 20 DEG C, NH in the exhaust gas through ventilation blower stripping out3It is dense
Degree is 69mg/m3, the flow of bacterium solution is 1.6m in corresponding biological nitrogen fixation tower3When/h, bacterium solution pH are 1.2, the absorptivity of ammonia nitrogen reaches
98.6%.Ammonia-nitrogen content is reduced to 184mg/L by 392mg/L in waste water after stripping tower stripping.
As wastewater pH increases, temperature is increased, NH3Stripping concentration is gradually increased；When wastewater pH=11.0, temperature is 35 DEG C
When, through ventilation blower stripping come out exhaust gas in NH3Concentration is 124mg/m3, the flow of bacterium solution is in corresponding biological nitrogen fixation tower
2.5m3When/h, bacterium solution pH are 1.2, the absorptivity of ammonia nitrogen is up to 99.12%.In waste water after stripping tower stripping ammonia-nitrogen content by
392mg/L is reduced to 20mg/L.
Ammonia-nitrogen content after certain the dairy cow farm wastewater treatment of table 2
Embodiment 3
Certain dairy cow farm is handled using biological nitrogen fixation method provided by the utility model processing high ammonia-nitrogen wastewater complexes
(processing sewage quantity is 5t/h) to waste water, and ammonia nitrogen concentration is 392mg/L in waste water, and waste water enters before this complexes by pre-treatment
TS is removed, and adjusts pH to 9.0, adjusts the temperature to 30 DEG C, ventilation blower operating condition is that ventilation quantity is 15000m3/ h, wind pressure are
2500Pa, and the acid bacterium solution that pH is 1.5 is trained with Thiobacillus thioxidans, contain through ammonia nitrogen in this complexes processed waste water
Amount is reduced to 157mg/L by 392 mg/L.
Ammonia-nitrogen content after certain the dairy cow farm wastewater treatment of table 3
It is technical solutions of the utility model to be described in further detail in conjunction with specific embodiments, but being not is this reality above
With novel limitation.All essence according to the utility model and any simple modification is made to above embodiments, still belong to
In the embodiment of the utility model range.
Claims (7)
1. a kind of new bio nitrogen fixation process handles high ammonia-nitrogen wastewater complexes, which is characterized in that including stripping tower (1), biology
Fixed nitrogen tower (2), waste water collector (3) and cultivation device (4)；The upper end of the stripping tower (1) passes through appendix (112) and biology
Fixed nitrogen tower (2) is connected；The lower end of the stripping tower (1) is connect by drainpipe one (110) with the waste water collector (3)；
Biological nitrogen fixation tower (2) lower end is connect by bacterium solution delivery pipe (208) with cultivation device (4), above the biological nitrogen fixation tower (2)
It is arranged porous spray tube (204), the bacterium solution of acid-producing microorganisms is delivered to by bacterium solution delivery pipe (403) in the cultivation device (4)
Porous spray tube (204).
2. a kind of new bio nitrogen fixation process according to claim 1 handles high ammonia-nitrogen wastewater complexes, which is characterized in that
Partition wall (401) are equipped in the cultivation device (4), the cultivation device (4) is separated into two parts, the partition wall (401) and training
Water hole (406) are set between bacterium device (4) bottom of pond, are connected to cultivation device (4) by water hole (406) in partition wall (401) bottom.
3. a kind of new bio nitrogen fixation process according to claim 2 handles high ammonia-nitrogen wastewater complexes, which is characterized in that
It further include the pretreatment unit of high ammonia-nitrogen wastewater, the pretreatment unit is pH regulating device, and the waste water after adjusting pH passes through
Feed pipe (105) is transported in stripping tower (1).
4. a kind of new bio nitrogen fixation process according to claim 3 handles high ammonia-nitrogen wastewater complexes, which is characterized in that
Porous water distributor (106) is arranged in stripping tower (1) top, the appendix of setting export ammonia nitrogen above porous water distributor (106)
(112)；Several layers are set by the scattered filler one (102) of waste water, corresponding each layer is set under the porous water distributor (106)
Grid one (101) is set, the ventilation blower (107) for stripping ammonia nitrogen is also set up on the downside of stripping tower (1)；The porous spray tube
(204) several layers are arranged by the scattered filler two (202) of waste water, corresponding each layer of setting grid two (203), bottom end in lower section
It is arranged bacterium solution delivery pipe (208), bacterium solution is discharged into cultivation device (4)；Exhaust pipe is arranged in biological nitrogen fixation tower (2) top
(210)。
5. a kind of new bio nitrogen fixation process according to claim 4 handles high ammonia-nitrogen wastewater complexes, which is characterized in that
The waste water that stripping tower (1) stripping is crossed drains into waste water collector (3) through drainpipe one (110), through draining pump (301) and draining
Pipe two (302) drains into subsequent anaerobic-aerobic processing unit.
6. a kind of new bio nitrogen fixation process according to claim 5 handles high ammonia-nitrogen wastewater complexes, which is characterized in that
Bacterium solution in cultivation device (4) is delivered to by bacterium solution delivery pipe (403) by porous spray tube using bacterium solution delivery pump (402)
(204)。
7. a kind of new bio nitrogen fixation process according to claim 6 handles high ammonia-nitrogen wastewater complexes, which is characterized in that
Cultivation device (4) setting nutrition pipeline (404) supplies nutrient solution, and setting air supply pipe (405) carries out aeration oxygen supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820250845.XU CN208136037U (en) | 2018-02-12 | 2018-02-12 | A kind of new bio nitrogen fixation process processing high ammonia-nitrogen wastewater complexes |
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| CN201820250845.XU CN208136037U (en) | 2018-02-12 | 2018-02-12 | A kind of new bio nitrogen fixation process processing high ammonia-nitrogen wastewater complexes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128989A (en) * | 2018-02-12 | 2018-06-08 | 南京贝克特环保科技有限公司 | A kind of new bio nitrogen fixation process processing high ammonia-nitrogen wastewater device and processing method |
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2018
- 2018-02-12 CN CN201820250845.XU patent/CN208136037U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128989A (en) * | 2018-02-12 | 2018-06-08 | 南京贝克特环保科技有限公司 | A kind of new bio nitrogen fixation process processing high ammonia-nitrogen wastewater device and processing method |
| CN108128989B (en) * | 2018-02-12 | 2024-02-06 | 南京贝克特环保科技有限公司 | Device and method for treating high ammonia nitrogen wastewater by biological nitrogen fixation method |
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