CN108328860A - The processing method of ammonia nitrogen in a kind of removal sanitary wastewater - Google Patents

The processing method of ammonia nitrogen in a kind of removal sanitary wastewater Download PDF

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CN108328860A
CN108328860A CN201810133516.1A CN201810133516A CN108328860A CN 108328860 A CN108328860 A CN 108328860A CN 201810133516 A CN201810133516 A CN 201810133516A CN 108328860 A CN108328860 A CN 108328860A
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crosslinked polyvinylpyrrolidone
outlet
water
net cage
carrier
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CN108328860B (en
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骆佳豪
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YUZHOU RUNHENG WATER CONSERVANCY Co.,Ltd.
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Jinhua Zhichan Wuyuan Information Technology Co Ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/58—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
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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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/18—Cyanides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil
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    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • C02F2101/345—Phenols
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    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • C02F2303/00—Specific treatment goals
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    • C02F2303/16—Regeneration of sorbents, filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
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    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • 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
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  • Water Treatment By Sorption (AREA)

Abstract

The invention discloses the processing methods, including sump, coarse rack, primary sedimentation basin, pH value regulating reservoir, crosslinked polyvinylpyrrolidone carrier adsorption cleaning system, aeration tank, biological phosphate-eliminating pond, secondary sedimentation tank, water purifying tank, pickling tower etc. of ammonia nitrogen in a kind of removal sanitary wastewater.Crosslinked polyvinylpyrrolidone is utilized in this system creativeness（PVPP）To the Selective adsorption of ammoniacal nitrogen in water, the carbonyl in molecular structure can form hydrogen bond complex with amino chemical combination.Artificial zeolite containing crosslinked polyvinylpyrrolidone is mixed with sanitary wastewater, it is set fully to adsorb ammonia nitrogen therein, so that crosslinked polyvinylpyrrolidone is released adsorbed ammonia nitrogen by way of heating desorption again, and released in the form of ammonia, tail gas discharges after acid-scrubbing cleaning is handled.Meanwhile the sanitary wastewater after crosslinked polyvinylpyrrolidone artificial zeolite carrier Adsorption ammonia nitrogen enters next processing links.

Description

The processing method of ammonia nitrogen in a kind of removal sanitary wastewater
Technical field
The present invention relates to a kind of processing methods of ammonia nitrogen in removal sanitary wastewater, belong to the wastewater treatment neck in environmental protection Domain.
Background technology
In recent years, with the continuous improvement of China cities and towns living standards of the people, the nitrogen content in urban life waste water is drastically Rise, the arbitrary discharge of more and more nitrogenous effluents causes great harm to environment.Nitrogen in waste water with organic nitrogen, Ammoniacal nitrogen（NH4 +-N）, nitrate nitrogen（NO3 --N）And nitrite nitrogen（NO2 --N）Etc. diversified forms exist, and ammoniacal nitrogen is most main One of existence form wanted.Ammonia nitrogen in sanitary wastewater refers to being mainly derived from nitrogen existing for free ammonia and ion ammonium form Swill and washing sewage.The pollution sources of ammonia nitrogen are more, and discharge capacity is big, and the concentration variation discharged is greatly.
There are excessive ammonia nitrogens, and dissolved oxygen concentration in water body can be caused to reduce from the aspect of environmental pollution, in water environment, leads Smelly, the deteriorating water quality of water body nigrescence is caused, the existence of aquatic animals and plants is impacted, and body eutrophication can be caused.
Currently, in sanitary wastewater the processing practicability of ammonia nitrogen preferably, the country with most technologies be：Biological denitrificaion method, Ammonia aeration vaporizing extract process, break point chlorination, chemical precipitation method, ion-exchange, liquid-film method, soil irrigation method etc..
（1）Biological denitrificaion method：Under aerobic condition, by the effect of aerobic nitrification bacterium, it is by the ammonium oxidation in waste water Then under anoxic conditions nitrite or nitrate utilizes denitrifying bacterium（Denitrifier）By nitrite and nitrate reduction It is escaped for nitrogen and from waste water.
（2）Ammonia aeration vaporizing extract process：Stripping, vaporizing extract process are mainly used for removing useless gas dissolved water and certain effumability objects Matter.Gas is passed through in water, gas is made mutually to be come into full contact with water phase, gas dissolved water and volatile solutes is made to pass through gas-liquid circle Face is shifted to gas phase, to achieve the purpose that remove pollutant.
（3）Break point chlorination：Break point chlorination is that chlorine is passed through in waste water to reach certain point, is dissociated in water in this Chlorinity is relatively low, and the concentration of ammonia is reduced to zero.When chlorine intake is more than this, the free chlorine in water will increase, therefore, The point is known as break, and the chlorination under the state is known as breakpoint chlorination.
（4）Chemical precipitation method：Chemical precipitation method is that Mg is added into waste water+And PO4 3-, it is allowed to multiple with ammonia nitrogen generation indissoluble Salt MgNH4PO4*6H2O（Abbreviation MAP）Crystallization, then so that MAP is detached from waste water by gravity precipitation.
（5）Ion-exchange：The essence of ion exchange is insoluble ionic compound（Ion-exchanger）On it is commutative The exchange reaction of ion and other same sex ions in waste water, is a kind of special adsorption process, and typically reversible chemical is inhaled It is attached.
（6）Liquid-film method：The mechanism of emulsion liquid membrane removal ammonia nitrogen is that ammoniacal nitrogen is soluble in film phase, its high concentration outside film phase Outside reach and solution dealkylation reaction occur with the acid in interior boundary, with phase in film on the inside of film phase by the diffusive migration of film phase, The NH of generation4 +Stablize in film in phase insoluble in oil phase, inside and outside the film under the promotion of ammonia density difference, amino molecule is not open close Film surface absorption is crossed, diffusion is migrated to desorption on the inside of film phase, to achieve the purpose that separation removal ammonia nitrogen.
（7）Soil irrigation method：Soil irrigation is the ammonia nitrogen waste water low concentration（<50mg/L）Fertilizer as crops comes It uses, stable water source is both provided for irrigating region agricultural, in turn avoids body eutrophication, improves water utilization rate. But have to pass through pretreatment, the nuisances such as removal germ, heavy metal, phenols, cyanide, oils for the waste water that soil is irrigated Matter.
The shortcomings of there are of high cost, technical sophistication, unstable treatment effects due to above-mentioned traditional treatment method, have Necessity breaks away from existing treatment technology thinking, hews out the new way of ammonia nitrogen in processing sanitary wastewater, and then develops a kind of completely new NH3-N elimination method in the sanitary wastewater of form.
Invention content
To solve the deficiencies in the prior art, the present invention provides a kind of processing systems of ammonia nitrogen in removal sanitary wastewater System, the sanitary wastewater containing ammonia nitrogen enter sump by waste line, and the outlet of sump connects coarse rack by waste line, The major diameter solid matter in sanitary wastewater is removed at this, the outlet of coarse rack connects primary sedimentation basin by waste line, This further removes the insoluble matter in waste water, and the outlet of primary sedimentation basin connects pH value regulating reservoir, pH value by waste line The outlet of regulating reservoir connects crosslinked polyvinylpyrrolidone carrier adsorption cleaning system, crosslinked polyethylene pyrroles by waste line Flue gas row's mouth of alkanone carrier adsorption cleaning system connects pickling tower by exhaust piping, and it is useless to remove to carry out pickling processes herein Tail gas Jing Guo purified treatment is discharged into atmospheric environment by the outlet of the ammonia in gas, pickling tower by exhaust piping, while being crosslinked poly- The discharge outlet of vinylpyrrolidone carrier adsorption cleaning system connects aeration tank by waste line, passes through aerobic aeration mistake herein Journey, makes the various phosphorus containg substances in waste water be converted into orthophosphates, and the outlet of aeration tank connects biology by waste line and removes Phosphorus pond, effect are to be removed the orthophosphates decomposition and inversion in waste water by bioactivity reaction process, biological phosphate-eliminating pond Outlet connects secondary sedimentation tank by waste line, and the outlet of secondary sedimentation tank connects water purifying tank, water purifying tank by waste line Outlet will after treatment by waste line the outer row of purification water outlet；Wherein, crosslinked polyvinylpyrrolidone carrier adsorbs The pond body of purification system uses stainless steel, is fixedly arranged in the middle of the electronic net cage sliding rail of a circle, first-class of electronic net cage sliding rail Every being equipped with 10 crosslinked polyvinylpyrrolidone carrier net cages, it is equipped with carrier net cage heating zone above pond body, above and below heating zone Both sides are respectively arranged with electric heating coil, and crosslinked polyvinylpyrrolidone carrier net cage enters heating zone by the entrance on the left of heating zone, And heating zone is left in the outlet through right side, heating zone upper right quarter is equipped with condenser pipe, and pond body lower left quarter is equipped with inlet valve, upper right Portion is equipped with water discharging valve；The sanitary wastewater that pH value is about 6.5 ~ 8.0 after pH value adjusting processing passes through crosslinked polyethylene pyrroles The inlet valve of alkanone carrier adsorption cleaning system lower left quarter enters inside pond body, 10 crosslinked polyvinylpyrrolidone carrier nets Case makees rotating clockwise at a slow speed under the driving of electronic net cage sliding rail, and waste water is made to contain crosslinked polyethylene with carrier net cage The carrier of pyrrolidones contacts, and crosslinked polyvinylpyrrolidone can fully adsorb ammoniacal nitrogen and partial moisture in waste water, Crosslinked polyvinylpyrrolidone carrier net cage after the nearly saturation of absorption is raised to carrier net cage heating zone along clockwise movement path Entrance, and enter inside heating zone, by the heating of electric heating coil, make crosslinked polyvinylpyrrolidone that thermal desorption occur, The ammoniacal nitrogen and moisture of absorption are discharged with the situation of ammonia-water vapor mixture body, mixed gas after the cooling of condenser pipe, The higher water recovery of boiling point is liquid water droplets, and in heated area's outlet return to pond body, and the lower ammonia of boiling point will not It is cooled and is condensed into liquid, and be to continue with and gas form is kept to be entered in the pickling tower of next processing links through gas vent, pass through Cross thermal desorption treated that crosslinked polyvinylpyrrolidone carrier net cage is regenerated, and along clockwise movement path through carrier net Case heating zone exit drops to inside pond body, again with waste water and play suction-operated, by this system purified treatment Pond body is discharged by the water discharging valve of pond body upper right quarter in waste water afterwards.
Further, the pond body dischargeable capacity of crosslinked polyvinylpyrrolidone carrier adsorption cleaning system is 350m3；Crosslinking Polyvinylpyrrolidone carrier net cage volume is 5.5m3, aperture 12mm；The operating voltage of electronic net cage sliding rail is 380V, is turned Speed is that 25min/ is enclosed.
Further, crosslinked polyvinylpyrrolidone carrier selects carrier of the artificial zeolite as crosslinked polyvinylpyrrolidone Substance, crosslinked polyvinylpyrrolidone mass content are 40.5%.
Further, the operating voltage of the electric heating coil of crosslinked polyvinylpyrrolidone carrier adsorption cleaning system is 380V, heating temperature can reach 225 DEG C；It is 380V, cryogenic temperature that condenser pipe, which uses lithium bromide refrigerating agent, refrigeration machine operating voltage, Up to 15 DEG C.
The advantage of the invention is that：
（1）This method has broken away from existing sanitary wastewater ammonia nitrogen purified treatment principle, and creative is utilized crosslinked polyethylene pyrrole Pyrrolidone（PVPP）To the Selective adsorption of ammoniacal nitrogen in water, the carbonyl in molecular structure can form hydrogen bond network with amino chemical combination Object is closed, the artificial zeolite containing crosslinked polyvinylpyrrolidone is mixed with sanitary wastewater, it is made fully to adsorb ammonia nitrogen therein, To make the sanitary wastewater containing ammonia nitrogen be purified, ammonia nitrogen removal efficiency is up to 98.8%
（2）The material that this method uses is artificial zeolite and crosslinked polyvinylpyrrolidone（Crosslinked polyvinylpyrrolidone）, two Person is non-toxic, to eliminate the risk for introducing pollutant that is new, endangering bigger；Meanwhile both materials are simple and easy to get, It is cheap, greatly reduce system operation cost.
（3）For its generated tail gas containing ammonia, the mode for using pickling is purified except ammonia this method, net It is good to change ammonia removal efficiency, additional pollution will not be caused to atmospheric environment.
（4）This method principle is simple and practicable, and design and construction cost is relatively low, and treatment effect is preferable, operation expense It is very low, be conducive to promote and apply on a large scale.
Description of the drawings
Fig. 1 is the equipment schematic diagram of the present invention.
In figure：1- sumps, 2- coarse racks, 3- primary sedimentation basins, 4-pH values regulating reservoir, 5- crosslinked polyvinylpyrrolidone Carrier adsorption cleaning system, the aeration tanks 6-, 7- biological phosphate-eliminatings pond, 8- secondary sedimentation tanks, 9- water purifying tanks, 10- pickling towers
Fig. 2 is the schematic diagram of crosslinked polyvinylpyrrolidone carrier adsorption cleaning system.
51- stainless steels pond body, 52- crosslinked polyvinylpyrrolidone carriers net cage, the electronic net cage sliding rails of 53-, 54- electrical heating Coil, 55- inlet valves, 56- water discharging valves, 57- carrier net cages heating zone entrance, the outlet of 58- carrier net cages heating zone, 59- Condenser pipe.
Specific implementation mode
The processing method of ammonia nitrogen, the sanitary wastewater containing ammonia nitrogen pass through waste line in removal sanitary wastewater as shown in Figure 1 Into sump 1, centralized collection is carried out herein and preliminarily stabilised is adjusted, the outlet of sump 1 connects thick lattice by waste line Grid 2 remove the major diameter solid matter in sanitary wastewater at this, and the outlet of coarse rack 2 connects primary sedimentation by waste line Pond 3, in this insoluble matter in further removing waste water, the outlet of primary sedimentation basin 3 connects pH value by waste line and adjusts Pond 4, waste water are neutralized and carry out the accurate adjusting of pH value herein, and the pH value range that pH value regulating reservoir 4 is discharged is 6.5 ~ 8.0, the water pH value that enters to meet crosslinked polyvinylpyrrolidone carrier adsorption cleaning system requires, the outlet of pH value regulating reservoir 4 Crosslinked polyvinylpyrrolidone carrier adsorption cleaning system 5 is connected by waste line, crosslinked polyvinylpyrrolidone carrier is inhaled Flue gas row's mouth of attached purification system 5 connects pickling tower 10 by exhaust piping, and pickling processes are carried out at this to go in removing exhaust gas Tail gas Jing Guo purified treatment is discharged into atmospheric environment by the outlet of ammonia, pickling tower 10 by exhaust piping, meanwhile, crosslinked polyethylene The discharge outlet of pyrrolidones carrier adsorption cleaning system 5 connects aeration tank 6 by waste line, passes through aerobic aeration mistake herein Journey, makes the various phosphorus containg substances in waste water be converted into orthophosphates, and the outlet of aeration tank 6 connects biology by waste line and removes Phosphorus pond 7, effect are removed the orthophosphates decomposition and inversion in waste water, biological phosphate-eliminating pond 7 by bioactivity reaction process Outlet by waste line connect secondary sedimentation tank 8, at this by waste water remaining insoluble matter all remove, secondary precipitation The outlet in pond 8 connects water purifying tank 9 by waste line, and the outlet of water purifying tank 9 will be after this system be handled by waste line The outer row of purification water outlet；Wherein, the pond body of crosslinked polyvinylpyrrolidone carrier adsorption cleaning system 5 uses stainless steel, It is fixedly arranged in the middle of the electronic net cage sliding rail 53 of a circle, and 10 crosslinked polyethylene pyrroles are equipped at equal intervals on electronic net cage sliding rail 53 Alkanone carrier net cage 52, pond body top are equipped with carrier net cage heating zone, and heating zone is respectively arranged with electric heating coil 54 in both sides up and down, hands over Join polyvinylpyrrolidone carrier net cage 52 and heating zone is entered by the entrance 57 on the left of heating zone, and the outlet 58 through right side is left Heating zone, heating zone upper right quarter are equipped with condenser pipe 59, and pond body lower left quarter is equipped with inlet valve 55, and upper right quarter is equipped with water discharging valve 56；After pH value adjusting processing（PH value is 6.5 ~ 8.0 after processing）Sanitary wastewater carried on a shoulder pole by crosslinked polyvinylpyrrolidone The inlet valve 55 of 5 lower left quarter of body adsorption cleaning system enters inside pond body, 10 crosslinked polyvinylpyrrolidone carrier net cages 52 make rotating clockwise at a slow speed under the driving of electronic net cage sliding rail 53, make waste water in carrier net cage 52 containing crosslinking poly- The artificial zeolite of vinylpyrrolidone comes into full contact with, crosslinked polyvinylpyrrolidone can fully adsorb the ammoniacal nitrogen in waste water with And partial moisture, it adsorbs the crosslinked polyvinylpyrrolidone carrier net cage 52 after nearly saturation and is raised to load along clockwise movement path Body net cage heating zone entrance 57, and enter inside heating zone, by the heating of electric heating coil 54, make crosslinked polyethylene pyrrolidines Thermal desorption occurs for ketone, and the ammoniacal nitrogen and moisture of absorption are discharged with the situation of ammonia-water vapor mixture body, and mixed gas is passed through After the cooling of condenser pipe 59, the higher water recovery of boiling point is liquid water droplets, and heated area outlet 58 is back in pond body, and The lower ammonia of boiling point, which will not be cooled, is condensed into liquid, and is to continue with and gas form is kept to enter next processing through gas vent In the pickling tower 10 of link, by thermal desorption, treated that crosslinked polyvinylpyrrolidone carrier net cage 52 is regenerated, and edge Clockwise movement path through being dropped to inside pond body at carrier net cage heating zone outlet 58, again with waste water and play absorption Effect, pond body is discharged by the water discharging valve 56 of pond body upper right quarter in the waste water after this system purified treatment, into next processing Link；Wherein, the effect of pH value regulating reservoir 4 is will to be adjusted to 6.5 ~ 8.0 by the pH value of waste water of primary sedimentation, to meet crosslinking Polyvinylpyrrolidone carrier adsorption cleaning system 5 enters the requirement of water pH value；Wherein, the effect of aeration tank 6 is by aerobic exposure Gas process makes the phosphorus containg substances in waste water be converted into orthophosphates；Wherein, the effect in biological phosphate-eliminating pond 7 is living by biology It is removed the orthophosphates decomposition and inversion in waste water by property reaction process from waste water.
By this system treated sanitary wastewater, ammonia nitrogen removal efficiency is up to 98.8%.

Claims (1)

1. the processing method of ammonia nitrogen in a kind of removal sanitary wastewater, which is characterized in that the sanitary wastewater containing ammonia nitrogen passes through waste pipe Line enters sump, and the outlet of sump connects coarse rack by waste line, and the major diameter removed at this in sanitary wastewater is solid Body substance, the outlet of coarse rack connect primary sedimentation basin by waste line, in this insoluble matter in further removing waste water, The outlet of primary sedimentation basin connects pH value regulating reservoir by waste line, and the outlet of pH value regulating reservoir is connected by waste line Crosslinked polyvinylpyrrolidone carrier adsorption cleaning system, the flue gas row of crosslinked polyvinylpyrrolidone carrier adsorption cleaning system Mouth connects pickling tower by exhaust piping, and pickling processes are carried out at this to remove the ammonia in removing exhaust gas, and the outlet of pickling tower, which passes through, gives up Tail gas Jing Guo purified treatment is discharged into atmospheric environment, while crosslinked polyvinylpyrrolidone carrier adsorption cleaning system by feed channel Discharge outlet by waste line connect aeration tank keep the various phosphorus containg substances in waste water equal herein by aerobic aeration process It is converted into orthophosphates, the outlet of aeration tank connects biological phosphate-eliminating pond by waste line, and effect is anti-by bioactivity Process is answered to remove the orthophosphates decomposition and inversion in waste water, the outlet in biological phosphate-eliminating pond connects secondary precipitation by waste line The outlet in pond, secondary sedimentation tank connects water purifying tank by waste line, and the outlet of water purifying tank will pass through processing by waste line The outer row of purification water outlet afterwards；Wherein, the pond body of crosslinked polyvinylpyrrolidone carrier adsorption cleaning system uses stainless steel, It is fixedly arranged in the middle of the electronic net cage sliding rail of a circle, and 10 crosslinked polyvinylpyrrolidone are equipped at equal intervals on electronic net cage sliding rail Carrier net cage, pond body top are equipped with carrier net cage heating zone, and heating zone is respectively arranged with electric heating coil, crosslinked polyethylene in both sides up and down Pyrrolidones carrier net cage enters heating zone by the entrance on the left of heating zone, and heating zone, heating zone are left in the outlet through right side Upper right quarter is equipped with condenser pipe, and pond body lower left quarter is equipped with inlet valve, and upper right quarter is equipped with water discharging valve；It is handled by pH value adjusting The water inlet that the sanitary wastewater that pH value is about 6.5 ~ 8.0 afterwards passes through crosslinked polyvinylpyrrolidone carrier adsorption cleaning system lower left quarter Valve enters inside pond body, and 10 crosslinked polyvinylpyrrolidone carrier net cages are made at a slow speed under the driving of electronic net cage sliding rail It rotates clockwise, so that waste water is contacted with the carrier containing crosslinked polyvinylpyrrolidone in carrier net cage, crosslinked polyethylene pyrrole Pyrrolidone can fully adsorb ammoniacal nitrogen and partial moisture in waste water, adsorb the crosslinked polyvinylpyrrolidone after nearly saturation Carrier net cage is raised to carrier net cage heating zone entrance along clockwise movement path, and enters inside heating zone, by electrical heating The heating of coil, makes crosslinked polyvinylpyrrolidone that thermal desorption occur, and the ammoniacal nitrogen and moisture of absorption are mixed with ammonia-water vapour The form discharge of gas is closed, for mixed gas after the cooling of condenser pipe, the higher water recovery of boiling point is liquid water droplets, warp In the outlet return to pond body of heating zone, and the lower ammonia of boiling point will not be cooled and be condensed into liquid, and is to continue with and keeps gas shape State is entered through gas vent in the pickling tower of next processing links, by thermal desorption treated crosslinked polyvinylpyrrolidone Carrier net cage is regenerated, and is dropped to inside pond body through carrier net cage heating zone exit along clockwise movement path, again With waste water and play suction-operated, the waste water after this system purified treatment is discharged by the water discharging valve of pond body upper right quarter Pond body；
The pond body dischargeable capacity of crosslinked polyvinylpyrrolidone carrier adsorption cleaning system is 350m3, crosslinked polyethylene pyrrolidines Ketone carrier net cage volume is 5.5m3, the operating voltage of aperture 12mm, electronic net cage sliding rail are 380V, rotating speed 25min/ Circle；
The operating voltage of the electric heating coil of crosslinked polyvinylpyrrolidone carrier adsorption cleaning system is 380V, and heating temperature reaches To 225 DEG C, it is 380V that condenser pipe, which uses lithium bromide refrigerating agent, refrigeration machine operating voltage, and cryogenic temperature is up to 15 DEG C.
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