CN108840497A - A method of sewage middle and high concentration ammonia nitrogen is removed with large aperture synthetic resin - Google Patents
A method of sewage middle and high concentration ammonia nitrogen is removed with large aperture synthetic resin Download PDFInfo
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- CN108840497A CN108840497A CN201810572164.XA CN201810572164A CN108840497A CN 108840497 A CN108840497 A CN 108840497A CN 201810572164 A CN201810572164 A CN 201810572164A CN 108840497 A CN108840497 A CN 108840497A
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
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- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a kind of methods with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen, and specific step is as follows：Sewage is cooled down, and sewage is passed through into surge tank；After sewage is pumped into more medium filter progress coarse filtration, then it is pumped into microstrainer and is filtered；Filtered sewage is pumped into adsorption column and is adsorbed；Into adsorption column, fair current is pumped into 4% sulfuric acid, and carries out zeolite regeneration to adsorption column and be discharged；Water outlet is distilled, is concentrated；Water after concentration is subjected to decrease temperature crystalline, is re-fed into and is separated by solid-liquid separation into separator, sewage middle and high concentration ammonia nitrogen can be removed；The present invention discloses a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen, control appropriate carrys out coolant-temperature gage, control small suspended matter and colloidal impurity in water, select HA-8D synthetic resin, desorbed solution uses 4% aqueous sulfuric acid, it can achieve water outlet total nitrogen content≤30ppm, resin is capable of the effect of long-period stable operation.
Description
Technical field
The present invention relates to a kind of methods with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen, belong to sewage treatment
Field.
Background technique
Sewage source is mainly waste water caused by methylamine production, and main pollutant present in methylamine wastewater is ammonia nitrogen
And methanol, it is other that there are also the macromolecule organics such as some amides.Ammonia nitrogen and methanol belong to noxious material, to ecological environment and
The health of the mankind and animals and plants can generate it is huge harm and due to methylamine wastewater complicated component, toxicity is big, ammonia-nitrogen content is high,
Biodegradability is poor, is generally difficult to carry out biological treatment.Therefore protection environment, realization are given birth in the research of methylamine wastewater processing method
The natural sustainable development of state has very important meaning.
Now with the continuous development of industrial technology, to the processing of ammonia nitrogen in waste water, mainly there are several types of methods：
1, blow-off method
Blow-off method is to convert the ion state ammonium (NH4+) in waste water to molecular state ammonia by adjusting pH value, then led to
Air or the steam blowout entered.The principal element for influencing stripping efficiency has：It is pH value, water temperature, cloth Water l oad, gas liquid ratio, enough
Gas-liquid separation space.
NH4++OH--NH3+H20
Ammonia aeration method is commonly used in the pretreatment of high-concentration ammonia nitrogenous wastewater, which is except ammonia effect is steady
It is fixed, it is easy to operate, it is easy to control.But stripping efficiency how is improved, secondary pollution is avoided and how to control production process scale
Generation is all ammonia aeration method problem in need of consideration.
2, chemical precipitation method (MAP method)
Chemical precipitation method is to add Mg in the waste water containing NH4+ ion2+ and PO4 3-, it is allowed to and NH4 +It is multiple to generate indissoluble
Salt magnesium ammonium phosphate MgNH4PO46H20 (abbreviation MAP) crystallization separates MAP from waste water by precipitating.Chemical precipitation
Method is particularly suitable for processing high-concentration ammonia nitrogenous wastewater, and has 90% or more nitric efficiency.Without poisonous and harmful substance in waste water
When, magnesium ammonium phosphate is good slow-release compound fertilizer needed for a kind of crops.When processing, if pH value is excessively high, part is easily caused
NH3Volatilization.It is recommended that shortening the sedimentation time, pH value is reduced, suitably to reduce NH3Volatilization.MgO and H is preferred in precipitating reagent3PO4,
So not only to avoid other harmful ions are brought into, MgO can also play the role of neutralizing H+ ion.Zhao Qing good et al. research
It was found that：In pH=8.6, while adding Na2HPO4And MgCl2Ammonia nitrogen can be down to 65mg/L from 6518mg/L.Chemical precipitation method
Handle high-concentration ammonia nitrogenous wastewater simple process, high-efficient.But the ammonia nitrogen residual concentration in waste water is still higher；In addition, medicament
Dosage, sediment outlet and the adding of agent chloride ion and phosphorus that induce one caused by pollution be it should be noted that the problem of.
3, film absorption technique
It is liquid-film method than older membrane technology, except ammonia mechanism is：NH3 is soluble in film phase (oily phase), it is highly concentrated outside film phase
The outside of degree is reached and is freed instead on the inside of film phase with the acid in interior phase interface, with phase in film by the diffusive migration of film phase
It answers, the NH of generation4 +, utilize the NH of film two sides3Partial pressure difference is motive force, makes NH3It shifts to reach drop from waste water to absorbing liquid
The purpose of ammonia-nitrogen content in low waste water.But how to prevent liquid film emulsification, the whereabouts for the absorbing liquid for being enriched ammonia nitrogen and reduction from absorbing
Liquid is to the content that the organic contamination of waste water is that the technology needs to put forth effort research.Now with becoming better and approaching perfection day by day for membrane technology, using film
Technology carries out high-concentration ammonia nitrogenous wastewater and has become a hot topic of research.Free ammonia is absorbed by ammonia-containing water and easily using a hydrophobic film
Liquid phase is every in film two sides.Different absorbing liquids needs to select different films.When using H2SO4When for absorbing liquid, it is necessary to select acidproof
Hydrophobic solid film, through the NH of film3With H2SO4Reaction generates (NH4)2SO4And it is recovered.The concentration of ammonia nitrogen in processed waste water
It theoretically can reach zero.The difficult point of the technique is to prevent the leakage of film.In order to guarantee higher flux, general microporous barrier
All than relatively thin, the water phase of film two sides is easy to leak film thickness under the action of pressure difference.
4, ion exchange adsorption
Ion exchange refers to the ion exchange process occurred on the interface of solid particle and liquid.Ion-exchange is often adopted
Use inorganic ion exchanger zeolite as exchanger resin, zeolite have the suction-operated strong to non-ionic ammonia and with ion ammonia
Ion exchange.This method is suitable for the ammonia nitrogen waste water of low concentration in processing, except ammonia nitrogen is high-efficient, and can also effectively remove
Turbidity and partial organic substances.This method and process is simple, small investment and easily regeneration, is a kind of safe and efficient, economical except ammonia nitrogen
Method.5, macroporous absorbent resin absorption method
Absorption resin is that one kind is free of ion exchange group, with the netted polymeric sorbent in big net hole.Due to absorption
The pore structure (aperture, Kong Rong, specific surface area) of resin can be regulated and controled in its preparation by reaction condition, and physicochemical properties
Stable, not soluble in water, inorganic acid alkali and organic solvent have the spies such as good hydrodynamic performance and good mechanical strength
Point is widely used in each field.Absorption resin is divided into nonpolarity, middle polarity, polarity three classes by its surface nature.Absorption principle
For：Ammonia nitrogen resin is enhanced polar method to adsorb ammonia nitrogen molecule, is first handed over using styrene and divinylbenzene using high crosslinking
Appropriate suitable pore-foaming agent is added in connection, and the auxiliary materials such as non-emulsifier, by certain temperature, time response first prepares certain base
Body sphere opens duct, is carrying out chloromethylation using chloromethyl ether, making on sphere with chloromethane then by extracting
Base reacts the chlorine ball matrix of end, is carrying out amination using polyethylene polyamine, sphere is made to have macropore and polyamines based polar,
Enhance adsorption capacity.Saturated resin parsing is reacted former with amino using 4% sulfuric acid and is eluted at the principle of salt, makes to adsorb resin
Be restored ability.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provides a kind of with high in large aperture synthetic resin removal sewage
The method of concentration ammonia nitrogen, to solve problems of the prior art.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A method of sewage middle and high concentration ammonia nitrogen being removed with large aperture synthetic resin, specific step is as follows：
(1) sewage is cooled down, and sewage is passed through into surge tank；
(2) it after sewage being pumped into more medium filter progress coarse filtration, then is pumped into microstrainer and is filtered；
(3) filtered sewage is pumped into the adsorption column equipped with resin and is adsorbed；
(4) after adsorption column penetrates in step (3), into adsorption column, fair current is pumped into 4% sulfuric acid, and washes to adsorption column
De- regeneration is discharged；
(5) water outlet after step (4) reaction distilled, be concentrated；
(6) water outlet after step (5) are concentrated is subjected to decrease temperature crystalline, is re-fed into separator and carries out solid-liquid point
From sewage middle and high concentration ammonia nitrogen can be removed.Liquid return step (5) continues to return to distillation, and solid residue is as fixed-end forces.
Resin used in the step (3) is HA-8D synthetic resin.
Temperature in the step (1) after sewage cooling is less than 50 DEG C.
The flow velocity of sewage is 1-1.5BV in the step (3).
The flow velocity of 4% sulfuric acid is 1BV/h in the step (4), and the volume of 4% sulfuric acid is 3BV.
Water outlet ammonia-nitrogen content after distillation in step (5) is detected, and the water outlet by ammonia-nitrogen content greater than 30ppm is returned
It is back in step (3), and is adsorbed again, if ammonia-nitrogen content less than 30ppm, directly gets battery limit (BL) by pump again.
Adsorption column after regeneration in step (4) is cleaned, specific step is as follows：1) void column is pressed with compressed air
Interior acid solution, and be passed through into dense parsing acid solution tank；2) it is countercurrently pumped into distilled water into adsorption column, and impregnates；3) compressed air is used
Distilled water in void column is pressed, and compressed distilled water is passed through into dense parsing acid solution tank；4) according to step 2) -3) to adsorption column
It is cleaned repeatedly, and the water after cleaning is passed through into washing filling.
The flow velocity of distilled water is 1BV/h in the step 2), and the volume of the distilled water is 9BV.
Soaking time is 30 minutes in the step 2).
The number cleaned in the step 4) is at least 2 times.
BV in the present invention refers to resin bed volume.Present invention control appropriate carrys out coolant-temperature gage, controls small outstanding in water
Floating object and colloidal impurity select HA-8D synthetic resin, and desorbed solution uses 4% aqueous sulfuric acid, can achieve water outlet total nitrogen and contain
Amount≤30ppm, resin are capable of the effect of long-period stable operation.
Due to using the above technology, the present invention compared with the prior art, is had the advantage that as follows：
1, the present invention controls water temperature when waste water enters adsorption column less than 50 DEG C, to guarantee that adsorption effect is best；
2, sewage cooling, which flows into, carries out homogeneous average adjusting in surge tank, contamination precipitation part is discharged into bottom.Using from
After heart pump enters more medium filter progress coarse filtration, then it is pumped into carry out secondary filter, passes through metering after pressurized and enter resin bed
Layer carries out ammonia nitrogen removal processing；The present invention can protect adsorbent and do not adhered to by impurity, reach the absorption done well by secondary filter
Effect and service life；
3, the present invention is using HA-8D synthetic resin as adsorbent adsorption capacity highest；
4, using 4% aqueous sulfuric acid as desorbed solution, adsorbent parsing effect is best, and water consumption is minimum.
Specific embodiment
With reference to embodiment, the present invention is furture elucidated.
Embodiment 1：
A method of sewage middle and high concentration ammonia nitrogen being removed with large aperture synthetic resin, is included the following steps：
(1) resin 50ml is measured with 100ml graduated cylinder, pier is real, is moved into resin column with distilled water, and resin upper layer is kept to have 3
The water layer of~5cm or so, and resin layer bubble-free.With emulsion tube by resin column connection, resin column is fixed tightly with iron clamp, keeps perpendicular
Straight downward state checks lower end cock control, prevents leakage.Resin is rinsed to efflux with distilled water and is clarified, flow velocity
For 1BV/h；
(2) methylamine wastewater for being 200ppm by total nitrogen, is passed through by being cooled to 50 DEG C, and by sewage into surge tank；
(3) it after sewage being pumped into more medium filter progress coarse filtration, then is pumped into microstrainer and is filtered；
(4) filtered sewage is pumped into the adsorption column equipped with HA-8D synthetic resin and is adsorbed；Control sewage
Water inlet flow velocity is 1-1.5BV；
(5) after adsorption column penetrates in step (4), it is 5BV, regeneration velocity 1BV/ that into adsorption column, fair current, which is pumped into volume,
4% sulfuric acid of h, and zeolite regeneration is carried out to adsorption column and is discharged；Water outlet ammonia-nitrogen content after distillation in step (5) is carried out
Detection, and the water outlet by ammonia-nitrogen content greater than 30ppm is back in step (3), and is adsorbed again, if ammonia-nitrogen content is small
In 30ppm, battery limit (BL) is directly got by pump again；
(6) water outlet after step (5) reaction distilled, be concentrated；
(7) water outlet after step (6) are concentrated is subjected to decrease temperature crystalline, is re-fed into separator and carries out solid-liquid point
From sewage middle and high concentration ammonia nitrogen can be removed.
Sewage after adsorption column (HA-8D synthetic resin) absorption is detected, and the results are shown in Table 1.
The testing result of sewage of the table 1 after adsorption column (HA-8D synthetic resin) absorption
It is sewage after adsorption column (HA-8D synthetic resin) absorption that fluid injection multiple is crossed in table 1, the volume and absorption of sewage
The multiple of agent volume.
Ammonia nitrogen value is ammonia nitrogen value of the sewage after adsorption column (HA-8D synthetic resin) absorption, in sewage in table 1.
Conductivity is conductivity of the sewage after adsorption column (HA-8D synthetic resin) absorption, in sewage in table 1.
By in table 1 it is found that when sewage by adsorption column (HA-8D synthetic resin) absorption after, the volume of sewage is adsorbent
At 85 times of volume, the ammonia nitrogen value in sewage is 28.4ppm, meets water outlet total nitrogen content≤30ppm requirement, therefore, works as sewage
Volume when being 85 times of adsorbent volume, the adsorption efficiency of sewage is best, and the effect of long-period stable operation can be capable of with resin
Fruit, the sewage after absorption can be expelled directly out outside device.
Embodiment 2：
A method of sewage middle and high concentration ammonia nitrogen being removed with large aperture synthetic resin, is included the following steps：
(1) to the adsorption column after regenerating in embodiment 1, spare to neutrality with pure water rinsing, specific step is as follows：1) with pressure
Contracting air presses acid solution in void column, and is passed through into dense parsing acid solution tank；2) be countercurrently pumped into adsorption column distilled water (distilled water
Flow velocity is 1BV/h, and the volume of distilled water is 9BV), and impregnate 30 minutes；3) distilled water in void column is pressed with compressed air, and will pressure
Distilled water after contracting is passed through into dense parsing acid solution tank；4) according to step 2) -3) adsorption column is cleaned repeatedly, and will cleaning
Water afterwards is passed through into washing filling, and the number of cleaning is at least 2 times.
(2) selecting total nitrogen is that filtered sewage is pumped into and is equipped with by being cooled to 50 DEG C by the methylamine wastewater of 200ppm
It is adsorbed in the adsorption column of HA-8D synthetic resin；The water inlet flow velocity for controlling sewage is 1-1.5BV；
(3) after adsorption column penetrates in step (2), it is 5BV, regeneration velocity 1BV/ that into adsorption column, fair current, which is pumped into volume,
4% sulfuric acid of h, and zeolite regeneration is carried out to adsorption column and is discharged；
(4) water outlet after step (3) reaction distilled, be concentrated；
(5) water outlet after step (4) are concentrated is subjected to decrease temperature crystalline, is re-fed into separator and carries out solid-liquid point
From sewage middle and high concentration ammonia nitrogen can be removed.
To by embodiment 1, treated after adsorption column cleans, sewage is adsorbed again, absorption result is shown in Table
2。
The testing result of sewage after adsorption column (HA-8D synthetic resin) absorption of the table 2 after over cleaning
| Cross column liquid multiple | Ammonia nitrogen value (mg/L) | Conductivity (Us/cm) | The color of sewage after adsorbing |
| 10 | 0 | 394 | It is colourless |
| 20 | 5 | 305 | It is colourless |
| 30 | 12.6 | 366 | It is colourless |
| 40 | 11.2 | 402 | It is colourless |
| 50 | 18 | 414 | It is colourless |
| 60 | 25 | 523 | It is colourless |
| 70 | 25.5 | 626 | It is colourless |
| 80 | 28 | 650 | It is colourless |
| 90 | 32 | 675 | It is colourless |
| 100 | 55 | 690 | It is colourless |
It is the body of sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning that fluid injection multiple is crossed in table 2
The long-pending multiple with adsorbent volume.
Ammonia nitrogen value is the ammonia nitrogen in sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning in table 2
Value.
Conductivity is the conductance in sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning in table 2
Rate.
As can be seen from table 2 after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning, the volume of sewage
When being 80 times of adsorbent volume, the ammonia nitrogen value in sewage is 28ppm, meets water outlet total nitrogen content≤30ppm requirement, therefore,
When the volume of sewage is 80 times of adsorbent volume, the adsorption efficiency of sewage is best, can with resin can long period stablize fortune
Capable effect, the sewage after absorption can be expelled directly out outside device.
Embodiment 3：
A method of sewage middle and high concentration ammonia nitrogen being removed with large aperture synthetic resin, is included the following steps：
1) adsorption column after being regenerated to embodiment 2, it is spare to neutrality with pure water rinsing.
2) selecting total nitrogen is the methylamine wastewater of 200ppm, and by being cooled to 50 DEG C, control water inlet flow velocity is after first passing through filter
2-3BV enters resin absorbing column and carries out ammonia nitrogen removal processing.
It 3) is 5BV with volume, regeneration velocity is the sulfuric acid solution Dissociative adsorption column of 1BV/h 4%, and is rushed with pure water
Adsorption column is washed to neutrality, can be used in next period.
Remaining step is same as Example 2.
To by embodiment 2, treated after adsorption column cleans, sewage is adsorbed again, absorption result is shown in Table
3。
The testing result of sewage after adsorption column (HA-8D synthetic resin) absorption of the table 3 after over cleaning
| Cross column liquid multiple | Ammonia nitrogen value (mg/L) | Conductivity (Us/cm) | The color of sewage after adsorbing |
| 10B | 0 | 339 | It is colourless |
| 20 | 11.2 | 362 | It is colourless |
| 30 | 11.2 | 475 | It is colourless |
| 40 | 14 | 580 | It is colourless |
| 50 | 18.2 | 969 | It is colourless |
| 60 | 25.2 | 743 | It is colourless |
| 70 | 25.2 | 612 | It is colourless |
| 80 | 25.2 | 596 | It is colourless |
| 90 | 30.8 | 630 | It is colourless |
| 100 | 32.0 | 682 | It is colourless |
| 105 | 53.2 | 694 | It is colourless |
It is the body of sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning that fluid injection multiple is crossed in table 3
The long-pending multiple with adsorbent volume.
Ammonia nitrogen value is the ammonia nitrogen in sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning in table 3
Value.
Conductivity is the conductance in sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning in table 3
Rate.
By in table 3 it is found that after adsorption column (HA-8D synthetic resin) of the sewage after over cleaning is adsorbed, sewage
When volume is 80 times of adsorbent volume, the ammonia nitrogen value in sewage is 25.2ppm, meets water outlet total nitrogen content≤30ppm requirement,
Therefore, there is no variations, the service life of adsorption column normal sorption, adsorption column not to change for the adsorption capacity of adsorption column.
Embodiment 4：
A method of sewage middle and high concentration ammonia nitrogen being removed with large aperture synthetic resin, is included the following steps：
1) adsorption column after being regenerated to embodiment 3, it is spare to neutrality with pure water rinsing.
2) selecting total nitrogen is the methylamine wastewater of 2000ppm, and by being cooled to 50 DEG C, control water inlet flow velocity is after first passing through filter
1-1.5BV enters progress ammonia nitrogen removal processing in resin absorbing column.
It 3) is 5BV with volume, regeneration velocity is the sulfuric acid solution Dissociative adsorption column of 1BV/h 4%, and is rushed with pure water
Adsorption column is washed to neutrality, can be used in next period.
Remaining step is same as Example 2.
To by embodiment 3, treated after adsorption column cleans, sewage is adsorbed again, absorption result is shown in Table
4。
The testing result of sewage after adsorption column (HA-8D synthetic resin) absorption of the table 4 after over cleaning
| Cross column liquid multiple | Ammonia nitrogen value (mg/L) | Conductivity (Us/em) | The color of sewage after adsorbing |
| 5BV | 1.4 | 486 | It is colourless |
| 10BV | 14 | 550 | It is colourless |
| 15BV | 30 | 702 | It is colourless |
| 20BV | 84 | 922 | It is colourless |
It is the body of sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning that fluid injection multiple is crossed in table 4
The long-pending multiple with adsorbent volume.
Ammonia nitrogen value is the ammonia nitrogen in sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning in table 4
Value.
Conductivity is the conductance in sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning in table 4
Rate.
By in table 4 it is found that after adsorption column (HA-8D synthetic resin) of the sewage after over cleaning is adsorbed, sewage
When volume is 15 times of adsorbent volume, the ammonia nitrogen value in sewage is 30ppm, meets water outlet total nitrogen content≤30ppm requirement, because
This, the adsorption column after over cleaning can adsorb the waste water of various concentration, and there is no variations for absorption column life.
Embodiment 5：
A method of sewage middle and high concentration ammonia nitrogen being removed with large aperture synthetic resin, is included the following steps：
(1) adsorption column after being regenerated to embodiment 4, it is spare to neutrality with pure water rinsing.
(2) selecting total nitrogen is the methylamine wastewater of 2000ppm, by being cooled to 50 DEG C, first passes through control water inlet flow velocity after filter
Enter progress ammonia nitrogen removal processing in resin absorbing column for 2-3BV.
It (3) is 5BV with volume, regeneration velocity is the sulfuric acid solution Dissociative adsorption column of 1BV/h 4%, and is rushed with pure water
Adsorption column is washed to neutrality, can be used in next period.
Remaining step is same as Example 2.
To by embodiment 4, treated after adsorption column cleans, sewage is adsorbed again, absorption result is shown in Table
5。
The testing result of sewage after adsorption column (HA-8D synthetic resin) absorption of the table 5 after over cleaning
| Cross column liquid multiple | Ammonia nitrogen value (mg/L) | Conductivity (Us/em) | The color of sewage after adsorbing |
| 5BV | 14 | 580 | It is colourless |
| 10BV | 14 | 637 | It is colourless |
| 15BV | 28 | 703 | It is colourless |
| 20BV | 64 | 953 | It is colourless |
It is sewage after adsorption column (HA-8D synthetic resin) absorption that fluid injection multiple is crossed in table 5, the volume and absorption of sewage
The multiple of agent volume.
Ammonia nitrogen value is the ammonia nitrogen in sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning in table 5
Value.
Conductivity is the conductance in sewage after adsorption column (HA-8D synthetic resin) absorption of the sewage after over cleaning in table 5
Rate.
By in table 5 it is found that after adsorption column (HA-8D synthetic resin) of the sewage after over cleaning is adsorbed, sewage
When volume is 15 times of adsorbent volume, the ammonia nitrogen value in sewage is 28ppm, meets water outlet total nitrogen content≤30ppm requirement, because
This, the adsorption column after over cleaning can adsorb the waste water of various concentration, and there is no variations for absorption column life.
Above-described embodiment is only the preferred technical solution of the present invention, and is not construed as limitation of the invention, the present invention
Protection scope should with claim record technical solution, including claim record technical solution in technical characteristic etc.
It is protection scope with alternative, i.e., equivalent replacement within this range is improved, also within protection scope of the present invention.
Claims (10)
1. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen, which is characterized in that specific step is as follows：
（1）Sewage is cooled down, and sewage is passed through into surge tank；
（2）After sewage is pumped into more medium filter progress coarse filtration, then it is pumped into microstrainer and is filtered；
（3）Filtered sewage is pumped into the adsorption column equipped with resin and is adsorbed；
（4）To step（3）After middle adsorption column penetrates, into adsorption column, fair current is pumped into 4% sulfuric acid, and is eluted again to adsorption column
Life is discharged；
（5）Step will be passed through（4）Water outlet after reaction is distilled, is concentrated；
（6）Step will be passed through（5）Water outlet after concentration carries out decrease temperature crystalline, is re-fed into and is separated by solid-liquid separation into separator,
Sewage middle and high concentration ammonia nitrogen can be removed.
2. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen according to claim 1, special
Sign is：The step（3）Used in resin be HA-8D synthetic resin.
3. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen according to claim 1, special
Sign is：The step（1）Temperature after middle sewage cooling is less than 50 DEG C.
4. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen according to claim 1, special
Sign is：The step（3）The flow velocity of middle sewage is 1-1.5BV.
5. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen according to claim 1, special
Sign is：The step（4）In the flow velocity of 4% sulfuric acid be 1BV/h, the volume of 4% sulfuric acid is 5BV.
6. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen according to claim 1, special
Sign is：To step（5）Sewage ammonia nitrogen content after middle distillation is detected, and the water outlet of ammonia-nitrogen content > 30ppm is returned
To step（3）In, and adsorbed again.
7. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen according to claim 1, special
Sign is：To by step（4）Adsorption column after middle regeneration is cleaned, and specific step is as follows： 1）Void column is pressed with compressed air
Interior acid solution, and be passed through into dense parsing acid solution tank； 2）It is countercurrently pumped into distilled water into adsorption column, and impregnates；3）Use compressed air
Distilled water in void column is pressed, and compressed distilled water is passed through into dense parsing acid solution tank；4）According to step 2）-3）To adsorption column
It is cleaned repeatedly, and the water after cleaning is passed through into washing filling.
8. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen according to claim 7, special
Sign is：The step 2）The flow velocity of middle distilled water is 1 BV/h, and the volume of the distilled water is 9BV.
9. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen according to claim 7, special
Sign is：The step 2）Middle soaking time is 30 minutes.
10. a kind of method with large aperture synthetic resin removal sewage middle and high concentration ammonia nitrogen according to claim 7, special
Sign is：The step 4）The number of middle cleaning is at least 2 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810572164.XA CN108840497A (en) | 2018-06-04 | 2018-06-04 | A method of sewage middle and high concentration ammonia nitrogen is removed with large aperture synthetic resin |
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