CN107721037A - A kind of high ammonia nitrogen desulfurization wastewater processing up to standard and reclaiming system and method - Google Patents
A kind of high ammonia nitrogen desulfurization wastewater processing up to standard and reclaiming system and method Download PDFInfo
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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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- 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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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C02F2101/00—Nature of the contaminant
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Abstract
The invention discloses a kind of high ammonia nitrogen desulfurization wastewater processing up to standard and reclaiming system and method, including desulfurizing tower, waste water preliminary sedimentation tank, the first more medium filter, ultrafiltration system, single multivalent ion separation electrodialysis system, pH regulations reaction settling basin, alkali chemicals dosing plant, sludge treatment system, the second more medium filter, cartridge filter, degassing film deamination system and water producing tank and sour chemicals dosing plant, the system and method can realize the reuse of power plant desulfurization wastewater, and the desulfurization wastewater of discharge is reached discharge standard.
Description
Technical field
The invention belongs to field of waste water treatment, is related to a kind of processing up to standard of high ammonia nitrogen desulfurization wastewater and reclaiming system and side
Method.
Background technology
2015 yearly correlation data show that China's thermal power generation installed capacity accounts for national capacity of installed generator 65.92%, wherein
Coal fired power generation installed capacity accounts for the 59.01% of national capacity of installed generator.With the raising of environmental requirement, national coal group of motors is matched somebody with somebody
Standby desulfurization equipment ratio is close to 100%, and the wet process of FGD work wherein with lime stone, lime, magnesia etc. for desulfurizing agent
Skill is China's thermal power industry occupation rate of market highest flue gas desulfurization technique.But the technique in sweetening process in order to anti-
Chlorine ion concentration exceedes setting and ensures gypsum quality in anti-avulsion sulfur cycle slurries, while maintains desulfurizer serum recycle system
Unite the balance of material, can discharge a part of desulfurization wastewater, desulfurization wastewater have " high pollution, high concentrtion, high rigidity, high salinity,
Severe corrosive and water quality and quantity change greatly " feature, be one of most intractable waste water of power plant.
At present, the domestic chemical precipitation flocculation treatment process (being commonly called as three header techniques) generally used, can remove waste water
The pollutants such as middle heavy metal and suspension, but although the desulfurization wastewater after processing can reach《Integrated wastewater discharge standard》
The related request of (GB 8978-1996), but the shortcomings of reagent consumption amount is big, sludge yield is big, actual moving process be present in technique
In, because the running situations such as many power plant effluent cyclones are poor, desulfurization wastewater suspension is higher and lime stone medicine system
Phenomena such as middle lime powder bin is hardened, dosing blockage often occurs, cause processing system equipment failure rate is higher, treatment effect not
Stable, the desulfurization wastewater after the PROCESS FOR TREATMENT still causes incrustation ion and corrosive ion (Cl containing substantial amounts of in addition-), after processing
Desulfurization wastewater reuse and discharge are all restricted.
In addition, in recent years to meet thermal power plant's water conservation requirement, desulphurization system process water progressively using municipal middle water,
The higher waste water of the ammonia-nitrogen contents such as Wastewater Form Circulating Cooling Water is substituted, simultaneously because the ultra-clean discharge transformation of thermal power plant is completed, desulfurization
There is the escaping of ammonia in system higher level's denitrating system, cause that ammonia nitrogen in more power plant desulfurization wastewater is exceeded, and part power plant desulfurization gives up
Water ammonia nitrogen concentration is even above 500mg/L.Water cellulose content can cause body eutrophication too much, in turn result in a series of
Serious consequence, such as in water body ammonia nitrogen presence, cause the quantity of photosynthetic microorganism (most of be algae) to increase, i.e. water body
Generation eutrophication, water treatment system filter tank can be caused to block, add the expense of water process；Hinder aquatic sports；Algae
Class metabolism final product can produce again cause the compound for having colourity and taste and blue-green algae caused by toxin, cause
Domestic animal damages, and fish are dead to wait some row problems.But traditional desulfurization wastewater treatment system does not have removal effect to ammonia nitrogen at present,
Ammonia nitrogen index can not meet after processing《Integrated wastewater discharge standard》(GB 8978-1996) is to the emission request of ammonia nitrogen.
In general, realize the processing up to standard of desulfurization wastewater, need to mainly solve suspension, heavy metal, ammonia nitrogen etc. pollution into
The removal divided；Meanwhile if it can also realize the reuse of desulfurization wastewater by after the chlorion removal in desulfurization wastewater.For desulfurization
The removal of ammonia nitrogen in waste water, consider to utilize advanced membrane separation technique solve the dirty stifled problem of film in membrane separating process, realize it is low into
This ammonia nitrogen separation and recycle, to the technical principle that the process relates generally to it is to be solved the problem of be analyzed as follows.
Degassing membrane technology is a kind of technology for being separated gas-liquid two-phase using microporous hydrophobic membrane, and the technology is provided using fenestra
Mass transfer interface between gas-liquid two-phase, have the advantages that specific surface area is high, gas liquid interfacial area is big, be a kind of new, effective point
From method.Principle using degassing film removal of ammonia and nitrogen is：Dewatering microporous film (polytetrafluoroethylene (PTFE), polypropylene, emulsion liquid film and segregation
PVF etc.) ammonia nitrogen waste water and absorbing liquid (acid solution) be separated in film both sides, gas can migrate from film phase, and liquid phase water is not
Energy.By adjusting pH value, make the NH of waste water intermediate ion state4 +It is changed into the volatility NH of nonionic state3, gaseous NH3Pass through film
Diffuse into absorb liquid phase and absorbed by acid solution and be changed into NH4 +.Inside and outside the film under the promotion of ammonia density difference, NH3Molecule is continuous
By film and make NH in absorbing liquid4 +Accumulated, then ammonia nitrogen is removed in waste water.After autospasy air film occurs, technology development
Rapidly, at present in many sector applications, such as：Handle remaining ammonia and phenol, processing methylamine or dimethylamine in coke-oven plant's production
It is enriched with some harmful organic substances, and high-concentration ammonia nitrogenous wastewater deamination with ammonium salt.But utilizing degassing film removal of ammonia and nitrogen mistake
Cheng Zhong, it is necessary to waste water is adjusted to strong basicity, so that ammonia nitrogen can be converted into gaseous ammonia molecules and be degassed film removing, due to desulfurization
The cause such as calcium, magnesium incrustation ion content is high in waste water, and when adjusting desulfurization wastewater to strong basicity, a large amount of calcium ions and magnesium ions will form solid
Thing separates out, and causes the fouling of degassing film, dirt stifled, therefore can not directly apply degassing film PROCESS FOR TREATMENT desulfurization wastewater.If deaerating
Dosing softening process is set before film, a large amount of alkali lye and sodium carbonate need to be added, there is that softening medicament is costly, and sludge yield is big etc. asks
Topic.
Electrodialysis is under electric field action, to pass through negative and positive to the selective penetrated property energy of zwitterion using amberplex
The directional migration of ion, the purpose of separation, purification and the concentration of electrolyte solution is realized, its most basic purposes is for water-soluble
The desalination or concentration of liquid.Single multivalence separation EDBM is a kind of new electrodialytic technique, is selected using a kind of special ion
Property pass through film, function is passed through with the selection possessed to different hydrated ionic radius ions, passes through in water monovalent ion, retention is more
Valency ion, reach the purpose of single multivalent ion separation.In desulfurization wastewater processing technology field, existing single multivalence separation EDBM
It is mainly used in point salt treatment of the desulfurization wastewater after chemical tendering, for producing purified salt after sodium sulphate is separated with sodium chloride,
Have no the single multivalent ion separating treatment for being directly applied to desulfurization wastewater raw water.
The content of the invention
A kind of the shortcomings that it is an object of the invention to overcome above-mentioned prior art, there is provided high ammonia nitrogen desulfurization wastewater place up to standard
Reason and reclaiming system and method, the system and method is capable of the reuse of power plant desulfurization wastewater, and reaches the desulfurization wastewater of discharge
Discharge standard.
To reach above-mentioned purpose, high ammonia nitrogen desulfurization wastewater processing up to standard of the present invention includes desulfurization with reclaiming system
Tower, waste water preliminary sedimentation tank, the first more medium filter, ultrafiltration system, single multivalent ion separation electrodialysis system, pH regulation reactions are heavy
Shallow lake pond, alkali chemicals dosing plant, sludge treatment system, the second more medium filter, cartridge filter, degassing film deamination system and production water
Case and sour chemicals dosing plant；
The outlet of desulfurizing tower is divided into two-way after waste water preliminary sedimentation tank, the first more medium filter and ultrafiltration system, wherein one
Enriched chamber in Lu Yudan multivalent ions separation electrodialysis system is connected, and another way separates electrodialysis system with single multivalent ion
In desalting chamber be connected, wherein, the outlet of desalting chamber is connected with the entrance of reuse water tank, the outlet and desulfurization of reuse water tank
The water inlet of tower is connected, and the outlet of enriched chamber is connected with the entrance of pH regulation reaction settling basins, the outlet of alkali chemicals dosing plant
It is connected with the entrance of pH regulation reaction settling basins, the outlet at bottom of pH regulation reaction settling basins is connected with sludge treatment system
Logical, the liquid outlet of pH regulation reaction settling basins is successively through the second more medium filter, cartridge filter and degassing film deamination system
System is connected with water producing tank, and sour chemicals dosing plant is connected with water producing tank.
The sludge outlet of waste water preliminary sedimentation tank bottom is connected with the entrance of desulfurizing tower.
High ammonia nitrogen desulfurization wastewater processing up to standard of the present invention comprises the following steps with reuse method：
1) power plant desulfurization wastewater of desulfurizing tower output, which enters, carries out homogeneous and preliminary sedimentation, waste water preliminary sedimentation tank in waste water preliminary sedimentation tank
The power plant desulfurization wastewater of output is divided into two-way after the first more medium filter and ultrafiltration system filtering successively, wherein entering all the way
Separated to single multivalent ion in the enriched chamber in electrodialysis system, another way is entered in single multivalent ion separation electrodialysis system
Desalting chamber in, solution entrance after the desalination rich in multivalent ion that desalting chamber exports in single multivalent ion separation electrodialysis system
Into reuse water tank, the water in reuse water tank enters reuse in desulfurizing tower, is concentrated in single multivalent ion separation electrodialysis system
The monovalent ion pregnant solution of room output is entered in pH regulation reaction settling basins, and reaction precipitation is adjusted to pH by alkali chemicals dosing plant
Pond adds alkali lye, the pH value of monovalent ion pregnant solution in pH regulation reaction settling basins is adjusted to 10-11, and then make monovalent ion
Nitrogen ammonia in pregnant solution exists in the form of amino molecule, and precipitates the heavy metal ion in monovalent ion pregnant solution, wherein, pH
The sediment of regulation reaction settling basin output, which is entered in sludge treatment system, to be handled, pH regulation reaction settling basin outputs
Power plant desulfurization wastewater enters degassing film deamination system after the filtering of the second more medium filter and cartridge filter filtering successively
In, wherein, the production water of degassing film deamination system output is entered in water producing tank, the ammonium phosphate solution of degassing film deamination system output
Recycled as product, acid solution added into water producing tank by sour chemicals dosing plant, the pH value of water producing tank reclaimed water is adjusted to 6-9,
To reach discharge standard.
The amount for entering power plant desulfurization wastewater in the enriched chamber of single multivalent ion separation electrodialysis system takes off for all power plant
The 10%-30% of the amount of sulphur waste water.
Univalent anion in power plant desulfurization wastewater enters enriched chamber through monovalent anion selectivity exchange membrane, and power plant takes off
Monovalent cation enters enriched chamber by univalent cation selectivity exchange membrane in sulphur waste water, makes the multivalence in power plant desulfurization wastewater
Ion is trapped within desalting chamber, realizes the separation of multivalent ion and monovalent ion in power plant desulfurization wastewater, makes to take off in desalting chamber
Bivalent ions concentration keeps constant in solution after salt, avoids the indissoluble in power plant desulfurization wastewater from salting out, desalting chamber's output
Solution is entered in reuse water tank after desalination containing multivalent ion.
In enriched chamber, power plant desulfurization wastewater is mixed with the monovalent ion that desalting chamber migrates into, formed monovalence from
Sub- pregnant solution, the solubility of refractory tungsten alloys rises with the increase of monovalent ion pregnant solution salt content in monovalent ion pregnant solution
Height, avoid monovalent ion pregnant solution fouling.
The invention has the advantages that：
With reclaiming system and method in concrete operations, waste water is pre- for high ammonia nitrogen desulfurization wastewater processing up to standard of the present invention
The power plant desulfurization wastewater of heavy pond output is divided into two-way after the first more medium filter and ultrafiltration system filtering successively, wherein all the way
Enter in the enriched chamber of single multivalent ion separation electrodialysis system, another way enters single multivalent ion separation electrodialysis system
Desalting chamber in, wherein, power plant desulfurization wastewater SDI after ultrafiltration<5, pH value 5-7, to reach follow-up single multivalent ion separation electricity
The inflow requirement of dialysis, while neutral or slant acidity condition is advantageous to extend the use longevity of single multivalence selective ion exchange membrane
Life；The power plant desulfurization wastewater of desalting chamber's output simultaneously is solution after the desalination rich in multivalent ion, and the power plant of enriched chamber's output takes off
Sulphur waste water is monovalent ion pregnant solution, multivalent ion in the concentration of multivalent ion and former power plant desulfurization wastewater in solution after desalination
Concentration is identical, and in the absence of fouling risk, solution enters directly into reuse in desulfurizing tower after desalination, and monovalent ion pregnant solution is adjusted through pH
Reaction settling basin heavy-metal ion removal is saved, then degassing film is entered after the second more medium filter and cartridge filter filtering
In deamination system, then degassed film deamination system is entered in water producing tank after removing the ammonia nitrogen in power plant desulfurization wastewater again, most
PH value is adjusted by sour chemicals dosing plant afterwards, to reach discharge standard., wherein it is desired to explanation, the present invention using single multivalence from
Son separation electrodialysis process realizes the separation of single multivalent ion in power plant desulfurization wastewater, to realize the softening of power plant desulfurization wastewater,
The problem of medicament for avoiding bringing using chemical tendering is costly and produces a large amount of sludge, on the other hand, the technique power consumption
It is low, safety coefficient is high, and salting liquid osmotic pressure can be overcome to limit, the salt content of monovalent ion pregnant solution can in enriched chamber
To reach 15%-20%, higher Water Sproading rate is realized.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Wherein, 1 it is desulfurizing tower, 2 be waste water preliminary sedimentation tank, 3 be the first more medium filter, 4 be ultrafiltration system, 5 is single more
Valency ion isolation electrodialysis system, 6 be pH regulations reaction settling basin, 7 be the second more medium filter, 8 be cartridge filter, 9
It is water producing tank for degassing film deamination system, 10,11 be reuse water tank, 12 be sludge treatment system, 13 be alkali chemicals dosing plant, 14 is
Sour chemicals dosing plant.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, high ammonia nitrogen desulfurization wastewater processing up to standard of the present invention includes desulfurizing tower 1, waste water with reclaiming system
Preliminary sedimentation tank 2, the first more medium filter 3, ultrafiltration system 4, single multivalent ion separation electrodialysis system 5, pH regulation reaction precipitations
Pond 6, alkali chemicals dosing plant 13, sludge treatment system 12, the second more medium filter 7, cartridge filter 8, degassing film deamination system 9
With water producing tank 10 and sour chemicals dosing plant 14；The outlet of desulfurizing tower 1 is through waste water preliminary sedimentation tank 2, the first more medium filter 3 and ultrafiltration system
It is divided into two-way after system 4, is connected wherein separating the enriched chamber in electrodialysis system 5 with single multivalent ion all the way, another way and list
Desalting chamber in multivalent ion separation electrodialysis system 5 is connected, wherein, the outlet of desalting chamber and the entrance phase of reuse water tank 11
Connection, the outlet of reuse water tank 11 are connected with the water inlet of desulfurizing tower 1, outlet and the pH regulation reaction settling basins 6 of enriched chamber
Entrance be connected, alkali chemicals dosing plant 13 outlet with pH regulation reaction settling basin 6 entrance be connected, pH adjust reaction precipitation
The outlet at bottom in pond 6 is connected with sludge treatment system 12, and the liquid outlet of pH regulation reaction settling basins 6 is situated between through more than second successively
Mass filter 7, cartridge filter 8 and degassing film deamination system 9 are connected with water producing tank 10, sour chemicals dosing plant 14 and water producing tank 10
It is connected；The sludge outlet of the bottom of waste water preliminary sedimentation tank 2 is connected with the entrance of desulfurizing tower 1.
High ammonia nitrogen desulfurization wastewater processing up to standard of the present invention comprises the following steps with reuse method：
The power plant desulfurization wastewater that desulfurizing tower 1 exports, which enters, carries out homogeneous and preliminary sedimentation in waste water preliminary sedimentation tank 2, it is ensured that power plant takes off
Sulphur waste water quality is stable, and removes wherein most suspension, reduces power plant desulfurization wastewater variation water quality and suspension is too high right
The impact of follow-up system, wherein, most suspended substances are the larger calcium sulphate crystal of particle in power plant desulfurization wastewater, waste water preliminary sedimentation
The power plant desulfurization wastewater that pond 2 exports is divided into two-way after the first more medium filter 3 and ultrafiltration system 4 filter successively, wherein one
Road is entered in the enriched chamber in single multivalent ion separation electrodialysis system 5, and another way enters single multivalent ion separation electric osmose
In desalting chamber in analysis system 5, wherein, the SDI for the power plant desulfurization wastewater that ultrafiltration system 4 exports<5, pH value 5-7, ultrafiltration system
The water quality for 4 power plant desulfurization wastewaters exported of uniting reaches follow-up single multivalent ion and separates electrodialytic inflow requirement, and neutral or inclined
Acid condition is advantageous to extend the service life of single multivalence selective ion exchange membrane；Single multivalent ion separates electrodialysis system 5
Solution is entered in reuse water tank 11 after the desalination rich in multivalent ion of middle desalting chamber's output, and the water in reuse water tank 11 enters
The reuse into desulfurizing tower 1, single multivalent ion separate the monovalent ion pregnant solution that enriched chamber exports in electrodialysis system 5 and enter pH
Adjust in reaction settling basin 6, alkali chemicals dosing plant 13 adds alkali lye to pH regulation reaction settling basins 6, pH is adjusted reaction settling basin 6
The pH value of middle monovalent ion pregnant solution is adjusted to 10-11, and then makes the nitrogen ammonia in monovalent ion pregnant solution in the form of amino molecule
In the presence of, and the heavy metal ion in monovalent ion pregnant solution is precipitated, wherein, the sediment that pH regulation reaction settling basins 6 export
Enter in sludge treatment system 12 and handled, the power plant desulfurization wastewater that pH regulation reaction settling basins 6 export is successively through second
More medium filter 7 filter and cartridge filter 8 filter after enter in degassing film deamination system 9, wherein, degassing film deamination system
The production water of the output of system 9 is entered in water producing tank 10, and the ammonium phosphate solution that degassing film deamination system 9 exports recycles as product,
Acid solution is added into water producing tank 10 by sour chemicals dosing plant 14, the pH value of the reclaimed water of water producing tank 10 is adjusted to 6-9, to reach discharge
Standard, finally realizes high rigidity, high ammonia nitrogen desulfurization wastewater major part treatment for reuse, and small part realizes the purpose of qualified discharge.
Degassing film deamination system 9 includes waste water circulation system, hydrophobicity degassing film and inhaled by ammonia of the phosphoric acid as absorbing liquid
Receipts system, power plant desulfurization wastewater, which enters in waste water circulation system, to be circulated, in multiple cyclic process, in power plant desulfurization wastewater
Ammonia gaseous molecular constantly enters the side of ammonia absorbing liquid through hydrophobicity degassing film, is caught by phosphoric acid absorbing liquid, and react generation
Ammonium phosphate solution；Ammonia nitrogen is to below 15mg/L in power plant desulfurization wastewater is by hydrophobicity degassing film iterative cycles removing waste water
Afterwards, then drain into water producing tank 10, wherein, the ammonium phosphate solution of generation can be used as fertilizer, be afforested for power plant.
The amount for entering power plant desulfurization wastewater in the enriched chamber of single multivalent ion separation electrodialysis system 5 takes off for all power plant
The 10%-30% of the amount of sulphur waste water；In desalting chamber, univalent anion is through monovalent anion selectivity in power plant desulfurization wastewater
Exchange membrane enters enriched chamber, and monovalent cation enters concentration by univalent cation selectivity exchange membrane in power plant desulfurization wastewater
Room, the multivalent ion in power plant desulfurization wastewater is trapped within desalting chamber, realize multivalent ion and one in power plant desulfurization wastewater
The separation of valency ion, makes in desalting chamber after desalination that bivalent ions concentration keeps constant in solution, avoids in power plant desulfurization wastewater
Indissoluble salt out, desalting chamber output the desalination rich in multivalent ion after solution enter in reuse water tank 11；In enriched chamber
In, power plant desulfurization wastewater is mixed with the monovalent ion that desalting chamber migrates into, and forms monovalent ion pregnant solution, monovalent ion
The solubility of refractory tungsten alloys raises with the increase of monovalent ion pregnant solution salt content in pregnant solution, avoids monovalent ion from being enriched with
Liquid fouling.
Finally it should be noted that reaching present invention can assure that the polluter content in power plant desulfurization wastewater is removed
《Integrated wastewater discharge standard》(GB8978-1996) related request, no waste water, waste gas produce, most of sludge and accessory substance
Recycling reuse can be realized, only when deamination adjusts pH, processing heavy metal, has a small amount of sludge containing heavy metal to produce, forms
The processing up to standard of a set of desulfurization wastewater cost-effective and environmentally friendly and reuse technology.
The citing of the implementation steps described above for being only the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the technical principles of the invention, some improvement and modification can also be made, these improve and become
Type also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of processing up to standard of high ammonia nitrogen desulfurization wastewater and reclaiming system, it is characterised in that including desulfurizing tower (1), waste water preliminary sedimentation
Pond (2), the first more medium filter (3), ultrafiltration system (4), single multivalent ion separation electrodialysis system (5), pH regulation reactions
Sedimentation basin (6), alkali chemicals dosing plant (13), sludge treatment system (12), the second more medium filter (7), cartridge filter (8),
Degassing film deamination system (9) and water producing tank (10) and sour chemicals dosing plant (14)；
The outlet of desulfurizing tower (1) is divided into two after waste water preliminary sedimentation tank (2), the first more medium filter (3) and ultrafiltration system (4)
Road, wherein the enriched chamber separated all the way with single multivalent ion in electrodialysis system (5) is connected, another way and single multivalent ion point
It is connected from the desalting chamber in electrodialysis system (5), wherein, the outlet of desalting chamber is connected with the entrance of reuse water tank (11),
The outlet of reuse water tank (11) is connected with the water inlet of desulfurizing tower (1), outlet and the pH regulation reaction settling basins (6) of enriched chamber
Entrance be connected, the outlet of alkali chemicals dosing plant (13) is connected with the entrance of pH regulation reaction settling basins (6), pH regulation reactions
The outlet at bottom of sedimentation basin (6) is connected with sludge treatment system (12), and the liquid outlet of pH regulation reaction settling basins (6) is successively
It is connected through the second more medium filter (7), cartridge filter (8) and degassing film deamination system (9) with water producing tank (10), acid adds
Medicine device (14) is connected with water producing tank (10).
2. high ammonia nitrogen desulfurization wastewater according to claim 1 processing up to standard and reclaiming system, it is characterised in that waste water preliminary sedimentation
The sludge outlet of pond (2) bottom is connected with the entrance of desulfurizing tower (1).
3. a kind of processing up to standard of high ammonia nitrogen desulfurization wastewater and reuse method, it is characterised in that based on the high ammonia described in claim 1
The processing up to standard of nitrogen desulfurization wastewater and reclaiming system, comprise the following steps：
1) power plant desulfurization wastewater of desulfurizing tower (1) output, which enters, carries out homogeneous and preliminary sedimentation, waste water preliminary sedimentation in waste water preliminary sedimentation tank (2)
The power plant desulfurization wastewater of pond (2) output is divided into two-way after the first more medium filter (3) and ultrafiltration system (4) filtering successively,
Wherein enter all the way in the enriched chamber in single multivalent ion separation electrodialysis system (5), another way enters single multivalent ion
Separate in the desalting chamber in electrodialysis system (5), what desalting chamber exported in single multivalent ion separation electrodialysis system (5) is rich in more
Solution is entered in reuse water tank (11) after the desalination of valency ion, and the water in reuse water tank (11) is entered in desulfurizing tower (1) and returned
With it is heavy that the monovalent ion pregnant solution that enriched chamber exports in single multivalent ion separation electrodialysis system (5) enters pH regulation reactions
In shallow lake pond (6), reaction settling basin (6) is adjusted to pH by alkali chemicals dosing plant (13) and adds alkali lye, pH is adjusted reaction settling basin
(6) pH value of monovalent ion pregnant solution is adjusted to 10-11 in, and then makes the nitrogen ammonia in monovalent ion pregnant solution with the shape of amino molecule
Formula is present, and precipitates the heavy metal ion in monovalent ion pregnant solution, wherein, pH regulation reaction settling basins (6) output is sunk
Starch is entered in sludge treatment system (12) and handled, pH regulation reaction settling basin (6) output power plant desulfurization wastewater according to
It is secondary to be entered after the second more medium filter (7) filtering and cartridge filter (8) filtering in degassing film deamination system (9), its
In, the production water of degassing film deamination system (9) output is entered in water producing tank (10), the phosphoric acid of degassing film deamination system (9) output
Ammonium salt solution is recycled as product, and acid solution is added into water producing tank (10) by sour chemicals dosing plant (14), is made in water producing tank (10)
The pH value of water is adjusted to 6-9, to reach discharge standard.
4. high ammonia nitrogen desulfurization wastewater according to claim 3 processing up to standard and reuse method, it is characterised in that enter list
The amount of power plant desulfurization wastewater is the amount of all power plant desulfurization wastewaters in the enriched chamber of multivalent ion separation electrodialysis system (5)
10%-30%.
5. high ammonia nitrogen desulfurization wastewater according to claim 3 processing up to standard and reuse method, it is characterised in that in desalting chamber
In, the univalent anion in power plant desulfurization wastewater enters enriched chamber through monovalent anion selectivity exchange membrane, and power plant desulfurization gives up
Monovalent cation enters enriched chamber by univalent cation selectivity exchange membrane in water, makes the multivalent ion in power plant desulfurization wastewater
It is trapped within desalting chamber, realizes the separation of multivalent ion and monovalent ion in power plant desulfurization wastewater, makes in desalting chamber after desalination
Bivalent ions concentration is kept constant in solution, avoids the indissoluble in power plant desulfurization wastewater from salting out, and desalting chamber's output is rich in
Solution is entered in reuse water tank (11) after the desalination of multivalent ion.
6. high ammonia nitrogen desulfurization wastewater according to claim 5 processing up to standard and reuse method, it is characterised in that in enriched chamber
In, power plant desulfurization wastewater is mixed with the monovalent ion that desalting chamber migrates into, and forms monovalent ion pregnant solution, monovalent ion
The solubility of refractory tungsten alloys raises with the increase of monovalent ion pregnant solution salt content in pregnant solution, avoids monovalent ion from being enriched with
Liquid fouling.
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