CN108975493A - The method of resource of urine waste water - Google Patents
The method of resource of urine waste water Download PDFInfo
- Publication number
- CN108975493A CN108975493A CN201810858473.3A CN201810858473A CN108975493A CN 108975493 A CN108975493 A CN 108975493A CN 201810858473 A CN201810858473 A CN 201810858473A CN 108975493 A CN108975493 A CN 108975493A
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- waste water
- reactor
- water
- urine waste
- nitrogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F3/1268—Membrane bioreactor systems
-
- 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
- C02F2101/30—Organic compounds
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The present invention provides a kind of new method of urine waste water reclaiming, raw water handled by this method is the urine waste water being collected into, urine waste water removes the organic matter in urine waste water by biochemical reaction in the reactor, eliminate peculiar smell, it is nitrate nitrogen by the mineralized nitrogen of half, pH drops to faintly acid simultaneously, obtain stable ammonium nitrate composite nutrient-fluid, it is (nitrogenous that acquisition ammonium nitrate compound liquid fertilizer is concentrated by membrane technology, phosphorus, potassium, sulphur) and high-quality recycled water, to realize the complete resource of urine waste water, reach the dual purpose for reducing the emission reduction of nitrogen and phosphorus element and resource reclaim.
Description
Technical field
The present invention relates to technical field of sewage, specifically, being related to a kind of method of resource of urine waste water.
Background technique
Nitrogen and phosphorus pollution can cause the eutrophication of water body, be to cause quality of water environment to deteriorate and restrict quality of water environment to improve
Key problem.At the same time, the scarcity of N P and K resource and decaying are just gradually becoming necessary face in world economic development
Pair a severe challenge.The sustainable transition of sewage treatment becomes current industry focus of attention.Urine waste water about contributes to
80% nitrogen in sanitary sewage, 50% phosphorus and 90% potassium, recycling treatment will be carried out after the separation of urine waste water, can not only
The nitrogen and phosphorus load of sewage treatment is effectively cut down, and helps to realize the recycling of N P and K resource.
Monotechnics such as ion exchange adsorption, ammonium phosphate (potassium) magnesium crystallisation, charcoal absorption, ammonia aeration etc. can recycle
A certain kind or certain two kinds of nutrient in source-separated urine, and lack the concern recycled to full nutritive elements such as nitrogen, phosphorus, potassium.
The various combination of above-mentioned technique can recycle the nutrients such as nitrogen, phosphorus, the potassium in source-separated urine simultaneously, be but faced with dosing at
The problem of this is excessively high, tail water is unable to qualified discharge.The concentration technologies such as reverse osmosis, nanofiltration concentration, freezing, distillation, positive infiltration can be with
Full nutritive element recycling is carried out, still, organic concentration increases and causes that peculiar smell is excessive or the loss of free ammonia in concentration process
Seriously.Therefore, research and development have more the urine waste water high-efficiency resource treatment technique of technical feasibility, engineer application potentiality, Ke Yiwei
The popularization and application that source separates drainage system provide technical support.
Summary of the invention
The object of the present invention is to provide a kind of method of resource of urine waste water.
Design of the invention is as follows: for such as needing additionally to add medicine present in current urine waste water reclaiming technology
Agent, tail water can not qualified discharge, the problems such as can not eliminating peculiar smell in urine, can only recycle single-element in urine, the present invention is adopted
The new_type treatment source-separated urine waste water being concentrated with half nitrator-film completes urine in membrane bioreactor (MBR)
The biological nitration of liquid waste water is completed at the same time the removal of organic matter, eliminates stench；And the water outlet of MBR is final after membrane separation concentration
The ammonium nitrate composite nutrient-fluid (including nitrogen, phosphorus, potassium) and cleaning recycled water two kinds of resources product for obtaining concentration, can either be reduced
Discharge of the compound fertilizer into environment, additionally it is possible to recycle fertilizer and recycled water.
In order to achieve the object of the present invention, the method for resource of urine waste water provided by the invention, makes urine waste water enter life
In object chemical reactor, in urine waste water about 90% or more organic matter is removed under the action of aerobic activated sludge, is then led to
The mode crossing film filtering or staticly settling, realizes mud-water separation；Meanwhile by adjusting the pH value in reactor, make to be discharged pH value
Control is ammonium nitrate composite nutrient-fluid in 5.0-7.0, gained water outlet.
Wherein, the molar ratio of ammonia nitrogen and nitrate nitrogen is 0.5-2:1-2 in the ammonium nitrate composite nutrient-fluid.
Method above-mentioned, residence time of the urine waste water in biochemical reaction device are 0.5-3d.
Preferably, in the reactor dissolved oxygen concentration >=6mg/L.
Preferably, the concentration of aerobic activated sludge is 500-8000mg/L in the reactor.
At least contain heterotrophic microorganism and nitrobacteria in aerobic activated sludge of the present invention.
The biological chemistry action mainly includes two aspects, first is that the biodegradation by heterotrophic microorganism removes urine
Organic matter in liquid waste water, second is that making the mineralized nitrogen nitrate nitrogen of half in urine waste water, this mistake by nitrobacteria
PH can fall to approximately 5.0-7.0 in journey, and biological chemistry action does not generate obvious effect to phosphate, potassium ion, nitrate etc..
In the specific embodiment of the present invention, reactor volume is that (aerobic activated sludge is dense in reactor by 16L
Degree is 1500-2000mg/L, useful load 12L), daily inflow is 4L, and hydraulic detention time is 3 days.
Method above-mentioned controls the pH in reactor in the range of 5.0-6.0.
Biochemical reaction device of the present invention is selected from MBR reactor, sequencing batch reactor, aeration tank-sedimentation basin combination
Reactor etc..
Biological chemistry action mainly passes through membrane bioreactor (MBR) to complete, and the method for operation of reactor can be
Continuum micromeehanics-continuous effluent, continuum micromeehanics-interval water outlet, intermittent water inflow-continuous effluent, intermittent water inflow-interval water outlet
Think that continuous flow reactor may be discontinuous flow reactor.The effect of film is efficiently retain microbial cells, together
When complete mud-water separation.The form of film can not also be used, i.e., completes mud-water separation effect by way of precipitating.For example, adopting
With the reactor of other forms, such as sequencing batch reactor (SBR) or aeration tank+sedimentation basin.
Preferably, biochemical reaction device used in the present invention is MBR reactor.
Wherein, the MBR reactor includes at least membrane module, boring aeration pipe, inlet and outlet.
Preferably, the membrane module is located at the surface of the boring aeration pipe.
The MBR reactor first passes through acclimation in advance, and by the selection index system to microorganism, building is useless suitable for urine
The activated sludge microecosystem of water water quality.The acclimated microorganism by the way of stepping up reactor influent load, makes it
Enough adapt to high ammonia nitrogen, hypersaline environment.Method particularly includes: after inoculation of activated-sludge, the concentration of influent ammonia nitrogen is controlled on the left side 50mg/L
The right side, preceding reaction system is close with being inoculated with, and (without nitrite accumulation in reactor water outlet, water constituent is out with ammonium after stable
Based on salt and nitrate), influent ammonium concentration, which is promoted, to 100mg/L further promotes influent ammonium concentration after stable
To 200mg/L, influent ammonia nitrogen loading is further promoted after stable, until reaching urine waste strength to be processed.Make
Activated Sludge System gradually adapts to urine wastewater environment.
Method above-mentioned further includes the steps that the ammonium nitrate composite nutrient-fluid is concentrated using film concentration technique.
The film concentration technique refers to level-one or two-stage reverse osmosis system (RO), or the new membranes concentration such as positive infiltration, membrane distillation
Isolation technics.
It is concentrated and separated by film, the ammonium nitrate composite nutrient-fluid of generation, ammonium salt, nitrate, sulfate, phosphate, sylvite
Equal nutrients are enriched in concentrated water pond after being concentrated separation, as compound dense nutrient solution (the i.e. ammonium nitrate composite fluid of ammonium nitrate
Fertilizer), and hydrone enters production pond through film, obtains high-quality recycled water.
The compound dense nutrient solution of ammonium nitrate and high-quality recycled water obtained by membrane technology concentration need to through ultraviolet disinfection or
Other modes disinfection rear is that final products are carried out using to guarantee biological wholesomeness.
Wherein, ammonium nitrate composite nutrient-fluid cocnentration factor is preferably controlled at 2-10 times.
Method above-mentioned further includes carrying out ultrafiltration or guarantor to the ammonium nitrate composite nutrient-fluid before carrying out film concentration
The step of peace filtering.
Further, if what is selected is MBR reactor, water outlet can be directly entered film concentration systems, according to other
The devices such as ultrafiltration+cartridge filter can be then added, to guarantee the water inlet of membranous system in form reactor before film concentration systems
Water quality.
Preferably, after first being pre-processed with hair filter or fine fack to the urine waste water, the life is entered back into
In object chemical reactor.
The urine waste water refers to the nitrogen mass concentration being collected by facilities such as sanitary wares in 100-2000mg/
Diluted urine within the scope of L, is mainly derived from human urine.The pH of the urine waste water is within the scope of 8.0-9.5, and preferably pH is about
It is 9.0.
By above-mentioned technical proposal, the present invention at least have following advantages and the utility model has the advantages that
The present invention provides a kind of new method of urine waste water reclaiming, and raw water handled by this method is the urine being collected into
Waste water, urine waste water removes organic matter, elimination peculiar smell in urine waste water by biochemical reaction in the reactor, by half
Mineralized nitrogen be nitrate nitrogen, while pH drops to faintly acid, stable ammonium nitrate composite nutrient-fluid is obtained, by membrane technology
Concentration obtains ammonium nitrate compound liquid fertilizer (nitrogenous, phosphorus, potassium, sulphur) and high-quality recycled water, to realize the complete of urine waste water
Full recycling reaches the dual purpose for reducing the emission reduction of nitrogen and phosphorus element and resource reclaim.
Method provided by the invention can overcome ammonia loss in existing urine waste water reclaiming, peculiar smell, nutrition acid element recycling
The problems such as rate is low realizes the recycling of N P and K resource to effectively cut down the nitrogen and phosphorus load of sewage treatment.
Detailed description of the invention
Fig. 1 is that the present invention utilizes urine waste water production nitric acid ammonium type composite nutrient-fluid process route chart.
Fig. 2 is half nitration reaction principle of urine waste water of the present invention.
Fig. 3 is the structural schematic diagram of membrane bioreactor in the embodiment of the present invention 1.
Fig. 4 is that urine waste water partly nitrifies result under the conditions of stepping up ammonia nitrogen loading in the embodiment of the present invention 1；Wherein, In
For water inlet, Eff is water outlet.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..Unless otherwise specified, embodiment
Used in the conventional means that are well known to those skilled in the art of technological means, raw materials used is commercial goods.
Aerobic activated sludge used in the following embodiment is derived from Beijing's housing sewage treating stations.
The present invention provides utilize method urine production nitric acid Ammonium sulfate phosphate compound fertilizer and clean recycled water, including following step
It is rapid:
(1) after urine waste water passes through biochemistry treatment in MBR reactor, the organic matter of removal about 90% or more, from
And peculiar smell is eliminated, water outlet pH is about 5.0-7.0, and wherein the mineralized nitrogen of half is nitrate nitrogen, to form ammonia nitrogen and nitric acid
The ammonium nitrate solution that salt nitrogen molar ratio is about 1:1, and the phosphate, potassium ion, sulfate in urine waste water do not occur obviously to become
Change.
Preferably, urine waste water is to be collected into from relevant sanitary ware facility by originally water-reducible Human Urine
Liquid, according to collecting device difference, dilute strength can be 4-100 times, and ammonia nitrogen concentration is about 100-2000mg/L in urine waste water.
Preferably, urine waste water enters in urine storage system after collection facility, has hair in urine storage system
Filter or fine fack carry out biochemical reaction system of being allowed for access after preliminary treatment to it.
Preferably, in biochemistry treatment system, mainly by the effect of aerobic activated sludge to urine waste water into
Row processing eliminates peculiar smell to remove the organic matter in waste water, while the mineralized nitrogen of half is nitrate nitrogen in waste water, from
And ammonia nitrogen and nitrate nitrogen the proportion about ammonium nitrate solution of 1:1 are formed, and the pH during this in reactor can become
Change, need through acid adding or alkali is added to control it, is allowed to control in reasonable range, guarantees the normal of biochemical reaction
It carries out, specific reaction principle is as follows:
Ammoxidation reaction: NH3+1.5O2→NO2 -+2H++H2O①
Nitrite-oxidizing reaction: NO2 -+0.5O2→NO3 -②
Preferably, completing above-mentioned biochemical reaction device can be membrane bioreactor (MBR), the method for operation of reactor
It can intermittently go out for continuum micromeehanics-continuous effluent, continuum micromeehanics-interval water outlet, intermittent water inflow-continuous effluent, intermittent water inflow-
Water, it can for continuous flow reactor may be discontinuous flow reactor, the effect of film is efficiently retain microorganism
Thallus is completed at the same time mud-water separation.Certainly, the reactor for completing biochemical reaction may be other forms, such as batch-type
Reactor, aerobic tank+sedimentation basin etc..
(2) the ammonium nitrate composite nutrient-fluid that membrane technology concentration and separation step (1) generate, ammonium salt, nitrate, sulfate, phosphorus
The nutrients such as hydrochlorate, sylvite are enriched in concentrated water pond after being concentrated separation, as the compound dense nutrient solution of ammonium nitrate, and hydrone
Enter through film and produce pond, obtains high-quality recycled water.
Preferably, film concentration technique can use reverse osmosis concentration, the technical application comparative maturity, to nutrient (nitrogen,
Phosphorus, potassium, sulphur) there is extraordinary rejection effect, rejection often 99% or more, can also use two-pass RO system, from
And guarantee to obtain the recycled water of high-quality, and first-stage reverse osmosis dope is ammonium nitrate composite nutrient-fluid (liquid fertilizer), and two
The grade namely regenerated aquatic products of reverse osmosis water outlet, and two-pass reverse osmosis concentrated water can be back in primary reverse osmosis system, thus real
The zero-emission of existing waste water.Certainly, film concentration and separation technology can be emerging positive infiltration technology, film distillation technology or other shapes
The film concentration technique of formula.
Preferably, what is selected in step (1) is MBR reactor, then water outlet can be directly entered film concentration system in step (2)
The devices such as ultrafiltration+cartridge filter can be added if being other forms reactor in step (1) in system before film concentration systems,
To guarantee the influent quality of membranous system.
Preferably, the ammonium nitrate composite nutrient-fluid and recycled water that step (2) obtains pass through ultraviolet disinfection process rear
It can be used as product to carry out using to guarantee biological safety.
Fig. 1 is seen using urine waste water production nitric acid ammonium type composite nutrient-fluid process route chart.Half nitration reaction of urine waste water
Principle is shown in Fig. 2.
The concrete application of 1 the method for the present invention of embodiment
MBR reactor used in the present embodiment includes at least membrane module, aeration tube (connection air flow meter and aeration
Pump), pH meter, water inlet (connection intake pump), water outlet (connection water outlet pump) and control system (Fig. 3).Control system it is main
Effect are as follows: (1) control water inlet, the water outlet of reactor；(2) by adding acid/base to control pH in reactor；(3) aeration pump is controlled
It opens and closes；(4) data record.
The urine waste water being collected into is built using certain, uses tap water to carry out after suitably diluting as water inlet, influent ammonia nitrogen is dense
Degree be about 100-300mg/L, pH is about 9.0, use membrane bioreactor (in reactor the concentration of aerobic activated sludge for
1500-2000mg/L), reactor volume is 16L (useful load of aerobic activated sludge is 12L in reactor), daily inflow
For 4L, hydraulic detention time is 3 days, does not carry out spoil disposal in the runtime.
In runtime, in urine waste water about 90% or more organic matter, reaction are removed under the action of aerobic activated sludge
About 60% mineralized nitrogen is nitrate nitrogen in device, and the pH in reactor is about 5.2.The pH of reactor water outlet is about 5.4, ammonia nitrogen
Concentration is about 35-130mg/L, and nitrate nitrogen is about 70-170mg/L.Water outlet is the composite nutrient-fluid based on ammonium nitrate, is no different
Taste, can be with product fluid fertilizer and high-quality recycled water after further separation is concentrated in film.
The microorganism in MBR reactor is tamed by the way of stepping up reactor influent load, enables to adapt to
High ammonia nitrogen, hypersaline environment.When stepping up influent ammonium concentration to nearly 400mgL, the concentration variation of reactor Inlet and outlet water ammonia nitrogen is such as
Shown in Fig. 4.From fig. 4, it can be seen that there are about the mineralized nitrogen of nearly half being nitrate nitrogen in water inlet, ammonia nitrogen and nitrate nitrogen rub
You do not have nitrite nitrogen than being about 1:1.PH in reactor is gradually reduced, and is 6 or so.After RO is concentrated, concentrate
In ammonia nitrogen concentration up to 1500mg/L or so, phosphate concn is up to 200mg/L or so, and potassium concentration is up to 1000mg/L
Left and right；And it produces COD concentration in water and is less than 30mg/L.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be modified or is improved, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, fall within the scope of the claimed invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. the method for resource of urine waste water, which is characterized in that enter urine waste water in biochemical reaction device, in aerobic work
Property sludge under the action of remove in urine waste water 90% or more organic matter, then filtered film or by way of staticly settling,
Realize mud-water separation；Meanwhile by adjusting the pH value in reactor, make to be discharged pH value control in 5.0-7.0, gained water outlet is nitre
Sour ammonium composite nutrient-fluid.
2. the method according to claim 1, wherein ammonia nitrogen and nitrate nitrogen in the ammonium nitrate composite nutrient-fluid
Molar ratio is 0.5-2:1-2.
3. the method according to claim 1, wherein in the reactor dissolved oxygen concentration >=6mg/L；It is described
The concentration of aerobic activated sludge is 500-8000mg/L in reactor.
4. the method according to claim 1, wherein stop of the urine waste water in biochemical reaction device
Time is 0.5-3d.
5. the method according to claim 1, wherein the biochemical reaction device is selected from MBR reactor, sequence batch
Formula reactor, aeration tank-sedimentation basin are combined reactor.
6. according to the method described in claim 5, it is characterized in that, the method for operation of the reactor is that continuum micromeehanics-are continuous
Water outlet, continuum micromeehanics-interval water outlet, intermittent water inflow-continuous effluent or intermittent water inflow-interval water outlet.
7. the method according to claim 1, wherein further including compound to the ammonium nitrate using film concentration technique
The step of nutrient solution is concentrated.
8. the method according to the description of claim 7 is characterized in that further including to the ammonium nitrate before carrying out film concentration
Composite nutrient-fluid carries out the step of ultrafiltration or security personnel's filtering.
9. the method according to claim 1, wherein first with hair filter or fine fack to the urine waste water
After being pre-processed, enter back into the biochemical reaction device.
10. -9 described in any item methods according to claim 1, which is characterized in that the quality of nitrogen in the urine waste water
Concentration is within the scope of 100-2000mg/L, and pH is within the scope of 8.0-9.5.
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| CN201810858473.3A CN108975493A (en) | 2018-07-31 | 2018-07-31 | The method of resource of urine waste water |
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Cited By (4)
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| CN111704482A (en) * | 2020-06-10 | 2020-09-25 | 清华大学 | Processing system and method for preparing ammonium nitrate |
| CN114684974A (en) * | 2022-04-22 | 2022-07-01 | 北京交通大学 | Source separation urine treatment system and method |
| CN114804472A (en) * | 2021-09-01 | 2022-07-29 | 北京科技大学 | Source separation urine stabilization and resource full recovery method |
| CN117263289A (en) * | 2023-11-10 | 2023-12-22 | 北京工业大学 | Distributed treatment system and method for recycling nutrition of source separation urine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111704482A (en) * | 2020-06-10 | 2020-09-25 | 清华大学 | Processing system and method for preparing ammonium nitrate |
| CN114804472A (en) * | 2021-09-01 | 2022-07-29 | 北京科技大学 | Source separation urine stabilization and resource full recovery method |
| CN114804472B (en) * | 2021-09-01 | 2023-03-21 | 北京科技大学 | Source separation urine stabilization and resource full recovery method |
| CN114684974A (en) * | 2022-04-22 | 2022-07-01 | 北京交通大学 | Source separation urine treatment system and method |
| CN114684974B (en) * | 2022-04-22 | 2023-08-11 | 北京交通大学 | Source separation urine treatment system and method |
| CN117263289A (en) * | 2023-11-10 | 2023-12-22 | 北京工业大学 | Distributed treatment system and method for recycling nutrition of source separation urine |
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Application publication date: 20181211 |
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