CN105621536B - Landfill leachate ammonia nitrogen removal membrane module and landfill leachate ammonia nitrogen removal method - Google Patents
Landfill leachate ammonia nitrogen removal membrane module and landfill leachate ammonia nitrogen removal method Download PDFInfo
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- CN105621536B CN105621536B CN201610085521.0A CN201610085521A CN105621536B CN 105621536 B CN105621536 B CN 105621536B CN 201610085521 A CN201610085521 A CN 201610085521A CN 105621536 B CN105621536 B CN 105621536B
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- landfill leachate
- film wire
- ammonia nitrogen
- shell
- absorbing liquid
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/025—Bobbin units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/21—Specific headers, end caps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
Abstract
The present invention is directed in when using prior art processing landfill leachate after ammonia nitrogen amount increase,Ammonia-nitrogen content is exceeded in the rubbish water outlet of processing,And the deficiency that processing cost is high,A kind of landfill leachate ammonia nitrogen removal membrane module and landfill leachate ammonia nitrogen removal method are provided,The membrane module includes shell,Shell both ends are respectively arranged with end cap one and end cap two,Hollow film wire is provided with along the length direction of shell in shell,It is alternatively arranged between film wire,Sour absorbing liquid outlet is provided on end cap two,Sour absorbing liquid import is provided on end cap one,Landfill leachate is handled using membrane module provided by the invention,The ability that the membrane module of same specification handles landfill leachate can be made to improve,And it can be according to requiring to obtain the liquid of different ammonia nitrogen concentrations,Ammonia nitrogen in high density can be handled,And treatment effeciency is high,Reduce the required precision of pretreating process.
Description
Technical field
The present invention relates to the processing method of ammonia nitrogen in landfill leachate and devices used
Background technology
Currently, to the following method of processing generally use of ammonia nitrogen in landfill leachate：Blow-off method, nitrification and denitrification method,
Using above two method processing landfill leachate there is larger limitation, as blow-off method not only inefficiency and be easy
Cause local pollution or secondary pollution so that subsequent process environment protection burden weight；Nitration denitrification method reaches in ammonia nitrogen value
It will can not work normally in the case of 4000mg/L, therefore, there is limitation to the numerical value of influent ammonia nitrogen so as to garbage disposal liquid
Requirement it is high, need to be compared stringent pretreatment, therefore under overall treatment efficiency is relatively low.Major part garbage loading embeading at present
Field and garbage burning factory add physico-chemical process to consider that investment and operating cost use biochemistry.But using the processing of biochemical plus physico-chemical process
Ammonia nitrogen in landfill leachate still has following insufficient：Annual May increases with temperature, and liquid measure increases sharply, ammonia nitrogen contains for diafiltration
Amount is also rapid to be improved, and up to 3000-3500mg/L, some is even up to 4000mg/L or more, drastically increases general ammonia-nitrogen content
The diafiltration liquid measure added and the ammonia-nitrogen content improved rapidly so that ammonia-nitrogen content is exceeded in refuse disposal system water outlet, or even makes rubbish
Rubbish processing system is by hurt.For example, certain city new district the first garbage burning factory early or mid May analysis result shows influent ammonia nitrogen
3800--4100mg/L (originally designs influent ammonia nitrogen 1300-1500mg/L), and the ammonia nitrogen in water outlet rises to from original content is up to standard
Ammonia-nitrogen content is 80-200mg/L or so so that ammonia-nitrogen content is unqualified in water outlet.Due to ammonia-nitrogen content liter in landfill leachate
It is high so that pH value also accordingly increases in landfill leachate, causes DTRO membranous systems to the rejection of ammonia nitrogen from neutral 91-95%
The 85-90% for dropping to alkalinity increases the quantity of concentrated water to keep water outlet ammonia nitrogen up to standard, causes a ton water running Fei and always put down
Equal cost is increased sharply.Such as：For handling 100 tons of waste liquid daily, under normal circumstances, concentrated water is 15-20 tons, ammonia nitrogen liter
Concentrated water becomes 25-30 tons after height, equivalent to increase 10 tons of processing cost；Using above-mentioned existing ammonia nitrogen processing method, due to
Ammonia nitrogen level content height is unqualified, and the nitrogen contained in the processing water of discharge still can cause secondary pollution to environment.
For these reasons, industry is seeking always a kind of processing method handling ammonia nitrogen in landfill leachate.
In order to solve the above-mentioned technical problem, application No. is 201110407074.3, entitled " one kind is gone based on novel ammonia nitrogen
Except the garbage leachate processing technique of technology ", application publication number be CN102951745 Chinese invention patent application disclose one
The processing method of kind landfill leachate, the gas-water separation membranous system that it is formed using hollow-fibre membrane or plate membrane is to garbage filter
Liquid is handled, and percolate enters hollow fiber cavity and carries out ammonia nitrogen removal, while being sent to air water with acid absorbing liquid
Ammonia nitrogen is absorbed outside the doughnut of separating film module, when adopting this method processing ammonia nitrogen, since landfill leachate is hollow
It is flowed in fibre membrane lumens, therefore to the required precision of landfill leachate height, otherwise easily blocks hollow-fibre membrane inner cavity, this is not
The cost of garbage disposal is improved only, and reduces the efficiency of garbage disposal liquid, some even can not work normally, and especially work as gas
When ammonia nitrogen amount improves in landfill leachate after temperature increases, wanting for national standard GB16889-2008 is often not achieved to the processing of rubbish
It asks.
Invention content
The present invention is directed to when handling landfill leachate using the prior art after ammonia nitrogen amount increase in landfill leachate, processing
Rubbish water outlet in ammonia-nitrogen content is exceeded and processing cost is high deficiency, a kind of landfill leachate ammonia nitrogen removal membrane module is provided
And landfill leachate ammonia nitrogen removal method.
In order to solve the above technical problem, the present invention provides technical solution it is as follows：
A kind of landfill leachate ammonia nitrogen removal membrane module, including shell, shell both ends are respectively arranged with end cap one and end cap
Two, hollow film wire is provided with along the length direction of shell in shell, is alternatively arranged between film wire, the outer surface at film wire both ends is close
Sealing is scheduled in shell, and sour absorbing liquid outlet is provided on end cap two, sour absorbing liquid import, film wire are provided on end cap one
Inner cavity both ends are connected to the outlet of sour absorbing liquid and sour absorbing liquid entrance respectively, are located at the sealing of film wire and shell in the upper end of shell
Waste liquid import is provided with below place, the top at the sealing that the lower end of shell is located at shell and film wire is provided with waste liquid
Outlet, the film wire in shell and the inner cavity between the sealing at both ends respectively with waste liquid import and waste liquid outlet,
The length direction of film wire wall upper edge film wire is provided with multiple weep holes, film wire inner cavity is connected by weep hole with housing cavity；
Waste liquid outlet end is provided with the pressure of the landfill leachate flowed in flow anti-deflection device control shell；
The flow anti-deflection device is water flow pressure detection and regulating device；
The flow anti-deflection device is linked in sequence by motor-driven valve, pressure sensor and electric control valve to be formed, motorized adjustment
Valve is electrically connected with pressure sensor, is connect with waste liquid outlet by motor-driven valve one end；
The both ends of the film wire are fixed on by glue sealing in shell；
The weep hole is slot hole, and length direction is arranged along the length direction of film wire, and the weep hole is provided with outward
The flange turned over；
Each film wire is vertically uniformly arranged in shell.
It is a further object of the invention to provide a kind of landfill leachate ammonia nitrogen removal methods, using ammonia nitrogen removal film group
Part handles landfill leachate, and sour absorbing liquid enters intracavitary in film wire, the intracavitary in film wire by sour absorbing liquid import
Flowing is flowed out after absorbing ammonia nitrogen through being exported by sour absorbing liquid；Landfill leachate enters in shell via waste liquid import, in film
Flowing is flowed out after ammonia nitrogen is deviate from through being exported by landfill leachate between silk.
Landfill leachate ammonia nitrogen removal method, using landfill leachate ammonia nitrogen removal membrane module above-mentioned to landfill leachate
It is handled；
Landfill leachate pH value is 8-11, and the pH value of preferable acid absorbing liquid is less than or equal to 2, and the pressure of landfill leachate is not
Higher than sour absorbing liquid pressure and sour absorbing liquid and landfill leachate can be made to flow, acid absorbs flow quantity 210-350L/h, rubbish
The temperature of diafiltration flow quantity 250-350L/h, landfill leachate and sour absorbing liquid is 10-50 DEG C, the TDS values of landfill leachate are small
In equal to 35%；
The pressure value of landfill leachate is 0.01-0.15MPa, the pressure value of sour absorbing liquid is 0.02-0.15MPa.
Method using the present invention carries out ammonia nitrogen removal to landfill leachate, since landfill leachate flows outside film wire,
And the acid solution for absorbing ammonia nitrogen is improved in film wire Bottomhole pressure, therefore NH_3-N treating ability, it will not be because of the blocking of waste liquid
And be detained, landfill leachate flowing velocity is fast, and amount of flow is big, so that the membrane module processing landfill leachate of same specification
Ability improves, and ammonia-nitrogen content is not restricted in by landfill leachate, and can fit according to requiring to obtain the liquid of different ammonia nitrogen concentrations
Demand for following process such as chemical fertilizer making.Percolate processing is carried out using the film wire component and processing method of structure of the invention
When, ammonia nitrogen in high density can be handled, and treatment effeciency is high, when influent ammonia nitrogen index exceeds 50%, effluent index 5 minutes
It is interior to restore normal.
When being handled using the method for the present invention and film wire component, it is only necessary to which membrane module is handled, and is taken up an area less, investment
Province, energy-saving effect are apparent, and the few occupation of land of method that rubbish ammonia nitrogen is handled than existing blow-off method, nitrification and denitrification method reduces half
More than, economic operating cost 25--30%；It is required that the low 0.02--0.1MPa of system work operating pressure, to pretreatment and technological process
It is required that it is simple, as long as 50 microns of water inlet filter device therefor precision, percolate processing can be made to be smoothed out, will not be blocked,
It needs the technology of 5 microns of Filter Precision to require well below the prior art, therefore reduces the required precision of pretreating process, make
Pretreating process easily reaches standard, widely used.When ammonia nitrogen increases in waste liquid, absorption can be kept fast by increasing sour amount
Degree is accelerated, and alkali number is increased, and free ammonia escape velocity is made to accelerate.Entire treatment effeciency improves by about one time.
For as long as treatment plant plus the level-one film of 2008 new standards are not achieved with biochemical system processing garbage filter ammonia nitrogen
Unit can make the ammonia nitrogen in garbage disposal liquid easily up to standard, and the ammonia of existing processing system can be made using seldom transformation input
Nitrogen discharged amount is up to standard, therefore economic benefit and the equal highly significant of social benefit.
Description of the drawings
Fig. 1 is landfill leachate ammonia nitrogen removal film assembly embodiment structural schematic diagram of the present invention.
Fig. 2 is another example structure signal of landfill leachate ammonia nitrogen removal membrane module of the present invention
Fig. 3 is film wire structural schematic diagram of the embodiment of the present invention；
Fig. 4 is single weep hole aperture example structure schematic diagram.
Reference sign：
1- acid absorbing liquids export 2- waste liquid import 3- acid absorbing liquid import 4- waste liquids and export 5- motor-driven valves
One 11- end caps of 6- pressure sensor 7- electric control valve 8- film wire 9- shell 10- end caps, two 12- glue 13-
Weep hole 14- flange 15- connectors
Specific implementation mode
Below in conjunction with the accompanying drawings with specific implementation mode to processing method of the present invention and landfill leachate ammonia nitrogen removal used
Membrane module is described in detail as follows：
In the present invention, percolate ammonia nitrogen handling arrangement is landfill leachate ammonia nitrogen removal membrane module, it includes more hollow
Film wire 8, accommodate the shell 9 of film wire 8, film wire 8 is disposed longitudinally in shell along shell 9, is respectively set at the both ends of shell
Have end cap 1 and end cap 2 11, glue 12 be filled at the both ends of shell, glue be filled in each film wire positioned at the both ends of shell
The both ends of each film wire are bonded together by position.Weep hole 13 is provided on film wire wall, by end cap 1 and end cap 2 11
Close off the both ends of shell.It is provided with sour absorbing liquid outlet 1 on end cap 2 11, sour absorbing liquid is provided on end cap 1
Import 3, the position that the lower section of glue is located in the top of shell are provided with waste liquid import 2, are located at the upper of glue in the lower section of shell
Square position is provided with waste liquid outlet 4.Setting is spaced between each film wire 8, spacing distance is unrestricted, to consider having for film wire component
Imitate area, between preferred film wire outer wall between be divided into 80-120 microns.The bigger the diameter of film wire endoporus the more advantageous, but by current
The present situation of film wire technology, 400-500 microns of film wire outer diameter, film wire wall thickness are 60-75 microns.It is preferred that weep hole 13 be slotted hole or
Elongated hole, length direction along the longitudinally disposed of shell, can vertical tiltable, weep hole is provided with lip flange 14, flange 14
It turns up setting to film wire.Weep hole is evenly distributed in the case where visually observing, and preferably shell is cylindrical shape, end cap one and end
Gai Erjun is fixedly connected with shell cooperation.
In the present invention, waste liquid import 2 and waste liquid outlet 4 are arranged on the ontology of shell 9, in shell inner surface and film
The channel that waste liquid circulation is formed between the outer surface of silk 8, makes waste liquid be flowed between each film wire 8, the spacing of film wire outer wall can evidence
Demand adjusts, therefore avoids blocking of the waste liquid to film wire inner cavity, therefore, can handle the waste liquid of big flow；Sour absorbing liquid
Import 3 and sour absorbing liquid export 1 and are separately positioned on the end cap one and end cap two at shell both ends, into the sour absorbing liquid in shell
With the channel that film wire inner cavity is circulation, acid solution is set to be flowed in film wire inner cavity, the acid solution flowed in film wire inner cavity can be by hydrophobic
Hole 13 absorbs the ammonia nitrogen contained in the rubbish waste liquid flowed outside film wire 8, and ammonia nitrogen enters intracavitary in film wire and forms ammonium with sour combine
With acid solution, the intracavitary in film wire flows salt, from 3 discharge of sour absorbing liquid outlet.In the process, sour absorbing liquid is the travelling of ammonia nitrogen
Movable power is provided, ammonia nitrogen is made to enter intracavitary in film wire, and the acid solution of intracavitary on film wire wall due to being arranged in film wire
Therefore weep hole will not flow to outside film wire inner cavity.In the present invention, waste liquid import 2 exports 1 with sour absorbing liquid and is arranged in shell 9
The same end, and the other end in shell is arranged with sour absorbing liquid import 3 in waste liquid outlet 4, makes the flow direction of sour absorbing liquid
Flow direction with waste liquid is on the contrary, formation cross-flow, is more advantageous to absorption of the sour absorbing liquid for ammonia nitrogen, raising garbage disposal liquid
Treatment effeciency.
As shown in Fig. 2, in order to increase the stability of water flow pressure, waste liquid outlet end is provided with flow anti-deflection device,
In the embodiment of the present invention, which is linked in sequence group by motor-driven valve 5, fluid power sensor 6 and electric control valve 7
At electric control valve 7 is electrically connected with pressure sensor 6.4 pipes are exported by 5 one end of motor-driven valve with waste liquid to connect, by motorized adjustment
Valve 7 receives pipeline pipe with waste liquid and connect.Flow anti-deflection device is set in the outlet of waste liquid, to the pressure of waste liquid in cavity
It is monitored, is adjusted according to pressure, make the pressure held stationary of waste liquid in the cavity of shell, flow can be prevented inclined in this way
Tiltedly, ensure absorption and combination of the sour absorbing liquid to ammonia nitrogen in landfill leachate.
Sealing and setting landfill leachate import are carried out to the end of film wire for convenience of fluid sealant and landfill leachate exports,
It is provided at both ends with 15 connection end cap one of connector and end cap two in shell.
Landfill leachate ammonia nitrogen processing method of the present invention is as follows：Sour absorbing liquid enters film wire 8 from sour absorbing liquid import 3
It is flowed out in inner cavity and in the flowing of the interior intracavitary of film wire 8, through sour absorbing liquid outlet 1, landfill leachate is flowed into from waste liquid import 2
The interior intracavitary of shell 9, flowing is from 4 outflow of waste liquid outlet between film wire 8, and under absorption of the acid to ammonia nitrogen, ammonia nitrogen passes through
The weep hole 13 being arranged on film wire wall enters intracavitary in film wire 8, and ammonia nitrogen is made to be combined to obtain ammonium salt with sour absorbing liquid.It handles herein
In the process, the preferable pH value of corresponding landfill leachate is 9-11, and preferably pH value is 10.5, the pH value of preferable acid absorbing liquid
Less than or equal to 2, suitable pH value can provide good escape power for free ammonia, be conducive to ammonia nitrogen and combined with acid, improve rubbish
The treatment effeciency of rubbish percolate.The pressure value of sour absorbing liquid and the pressure of landfill leachate are can guarantee that sour absorbing liquid and rubbish are oozed
Filtrate energy smooth flow is advisable, and wherein the pressure outline of landfill leachate is less than the pressure of sour absorbing liquid, such as landfill leachate
Pressure value is 0.01-0.15MPa, the pressure value of sour absorbing liquid is 0.03-0.15Mpa, when the TDS of sour absorbing liquid is higher than waste liquid
TDS when, in the infiltration acid absorbing liquid that the moisture in waste liquid can be few as possible, be conducive to the processing to landfill leachate, preferably
Acid absorb flow quantity 210-350L/h, garbage filter flow quantity 250-350L/h, the temperature of landfill leachate and sour absorbing liquid
It is 10-50 DEG C.By the overall condition of current landfill leachate both at home and abroad, device using the present invention and process garbage filter
Liquid does not limit COD value, TDS values, the ammonia-nitrogen content value into film waste liquid strictly, that is, the device of the invention and place
Reason method can handle it is in all parts of the country throughout the year in landfill leachate, the COD value of country's landfill leachate, TDS at present
Value, ammonia-nitrogen content value basic condition are as follows：COD value is less than or equal to 35%, ammonia-nitrogen content less than or equal to 50,000 milligrams per liter, TDS values
Value is less than or equal to 5,000 mg/litres, that is, the device of the invention and technique can at least handle the rubbish of These parameters content and ooze
Filtrate.
Method and apparatus using the present invention handle landfill leachate, can reduce the damage to membrane component, main to show
It is reachable up to the content of 5mg/L, resistance to sulfuric acid in the acid resistance and oil resistivity that can significantly improve membrane component, such as oil resistivity
50%, salt tolerant acid content is up to 20%, resistance to nitric acid content up to 30%, while the cleaning frequency of membrane component is obviously prolonged, up to 6
A month.Table 1 is the oil resistant of the acid resistance, oil resistivity and cleaning frequency and comparative example membrane component in the prior art of inventive film element
The comparison of property, acid resistance and cleaning frequency.
Method and apparatus using the present invention handle landfill leachate, and processing of the membrane component for landfill leachate can be improved
Ability reduces the requirement to landfill leachate, for example, the COD value into film waste liquid is reachable up to 50,000 mg/litres, TDS values
35%, to the ammonia-nitrogen content value in landfill leachate without limitation, therefore, international and domestic existing any rubbish can be handled and oozed
Filtrate.
In the following, to handle landfill leachate to comparing work of the invention with using art methods using the method for the present invention
Skill and the advantageous effect reached are described in detail.
Embodiment 1
Using the film wire component of structure of the invention, use a diameter of 500 microns of film wire, its internal diameter for 350 microns, film wire
80 microns are divided between film wire.It is 2, garbage filter hydraulic coupling that landfill leachate pH value, which is adjusted to 11, sour absorbing liquid pH value,
0.01-0.15MPa, sour absorbing liquid pressure value be 0.02-0.15MP, acid absorbs flow quantity 350L/h, garbage filter flow quantity
The temperature of 250L/h, landfill leachate and sour absorbing liquid are 10-50 DEG C, COD of waste leachate value is less than or equal to 50,000 milligrams often
It rises, TDS values are less than or equal to 35%, ammonia-nitrogen content value without limitation.Processed landfill leachate, ammonia-nitrogen content 15mg/L.
Embodiment 2
Use a diameter of 450 microns of film wire, its internal diameter for 300 microns, landfill leachate pH value is 11, sour absorbing liquid PH
Value is 1.5, garbage filter hydraulic coupling 0.07MPa, the pressure value of sour absorbing liquid is 0.09MP, acid absorbs flow quantity 210L/h, rubbish
Rubbish is percolated flow quantity 350L/h, remaining is the same as embodiment 1.Processed landfill leachate, ammonia-nitrogen content 14mg/L.
Embodiment 3
Use a diameter of 400 microns of film wire, its internal diameter for 250 microns, landfill leachate pH value is 11, sour absorbing liquid PH
Value is 1, garbage filter hydraulic coupling 0.2MPa, the pressure value of sour absorbing liquid is 0.3MP, acid absorbs flow quantity 280L/h, rubbish oozes
Flow of filtrate 300L/h, remaining is the same as embodiment 1.Processed landfill leachate, ammonia-nitrogen content 12mg/L.
Comparative example 1
Using entitled " a kind of garbage leachate processing work based on novel ammonia nitrogen removal technology mentioned in background technology
Skill ", application publication number be CN102951745 Chinese invention patent disclosed in device and method to landfill leachate at
Reason.In shell one end, the other end in shell is arranged in the outlet of landfill leachate percolate for the import setting of its rubbish filter filtrate,
Sour absorbing liquid flows between the film wire in shell.
Use a diameter of 250 microns of film wire, its internal diameter for 80 microns, COD of waste leachate value is less than or equal to 30,000 millis
Grams per liter, TDS values are less than or equal to 28%, ammonia-nitrogen content value and are less than or equal to 3,000 mg/litres, when carrying out landfill leachate treatment, ooze
Filtrate intracavitary in hollow fiber film thread flows, and acid absorbing liquid is absorbed in the doughnut flows outside of gas-water separation membrane module
Ammonia nitrogen carries out ammonia nitrogen removal, remaining is the same as embodiment 1.Processed landfill leachate, ammonia-nitrogen content 14mg/L.The import of acid
It is reversed with the import direction of landfill leachate.
Comparative example 2
Use a diameter of 350 microns of film wire, its internal diameter for 175 microns, COD of waste leachate value is less than or equal to 20,000 millis
Gram per liter, remaining is the same as embodiment 2.Processed landfill leachate, ammonia-nitrogen content 14mg/L.
Comparative example 3
Use a diameter of 400 microns of film wire, its internal diameter for 250 microns, landfill leachate pH value is 10, sour absorbing liquid PH
Value is 1.5, garbage filter hydraulic coupling 0.1MPa, the pressure value of sour absorbing liquid is 0.12MP, acid absorbs flow quantity 280L/h, rubbish
It is percolated flow quantity 300L/h, remaining is the same as embodiment 3.Processed landfill leachate, ammonia-nitrogen content 14mg/L.
Table 1：For present invention process to landfill leachate requirement, membrane component acid resistance, oil resistivity and cleaning frequency with it is existing
Contrast table of the technical matters to landfill leachate requirement, the oil resistivity of membrane component, acid resistance and cleaning frequency.
In present invention process it can be seen from subordinate list, the processing of the thickness of film wire for the landfill leachate of film wire component
Ability does not influence significantly, and the film wire internal diameter in film wire component of requirement in prior art processes to to(for) landfill leachate and
Processing capacity has apparent different, and the requirement with the reduction of film wire internal diameter to SS and SDI values is more stringent, membrane component it is clear
Washing the period obviously increases.
The method of the present invention, the requirement for SS the and SDI values of landfill leachate is substantially better than the prior art, and it is cleaned
Period extends 30-40 times than the cleaning frequency of the prior art, in the prior art, it is small often to clean a membrane module about time-consuming 2
When, therefore, it can significantly shorten the cleaning time used, significantly improve production efficiency.The method of the present invention is for landfill leachate
Water inlet ss suspended solid value, intake SDI values requirement be significantly reduced, it is, apparatus of the present invention and technique are for rubbish
The processing capacity of rubbish percolate significantly improves, and achieves unexpected technique effect.In processing method of the present invention, due to trip
Very fast from the escape velocity of ammonia, the weep hole on silk wall occurs without clogging.
Subordinate list
Claims (5)
1. a kind of landfill leachate ammonia nitrogen removal membrane module, including shell (9), shell (9) both ends are respectively arranged with end cap one
(10) and end cap two (11) length direction of shell, is provided with hollow film wire (8) in shell, the row of interval between film wire (8)
The outer surface sealing of row, film wire both ends is fixed in shell (9), which is characterized in that sour absorption is provided on end cap two (11)
Liquid exports (1), sour absorbing liquid import (3) is provided on end cap one (10), film wire (8) inner cavity both ends go out with sour absorbing liquid respectively
Mouth is connected to sour absorbing liquid entrance, and the lower section at the sealing that the upper end of shell (9) is located at film wire and shell is provided with waste liquid
Import (2), the top at the sealing that the lower end of shell is located at shell and film wire are provided with waste liquid and export (4), in shell
Film wire is connected to waste liquid import (2) and waste liquid outlet (4) respectively with the inner cavity between the sealing at both ends, on film wire wall
Along the length direction of film wire is provided with multiple weep holes (13), film wire inner cavity is connected by weep hole (13) with housing cavity,
Waste liquid outlet (4) end is provided with the pressure of the landfill leachate flowed in flow anti-deflection device control shell, it is described hydrophobic
Hole (13) is slot hole, and length direction is arranged along the length direction of film wire, and the weep hole (13) is provided with turned-out flange
(14), the flow anti-deflection device is linked in sequence and is formed by motor-driven valve (5), pressure sensor (6) and electric control valve (7), electricity
Dynamic regulating valve is electrically connected with pressure sensor, is connect with waste liquid outlet by motor-driven valve one end.
2. landfill leachate ammonia nitrogen removal membrane module described in accordance with the claim 1, which is characterized in that the both ends of the film wire are logical
Glue sealing is crossed to be fixed in shell (9).
3. landfill leachate ammonia nitrogen removal membrane module described in accordance with the claim 1, which is characterized in that each film wire is erected in shell
To being uniformly arranged.
4. a kind of landfill leachate ammonia nitrogen removal method, which is characterized in that using ammonia nitrogen removal membrane module to landfill leachate into
Row processing passes through after sour absorbing liquid enters intracavitary in film wire by sour absorbing liquid import, intracavitary flowing absorbs ammonia nitrogen in film wire
It is exported and is flowed out by sour absorbing liquid；Landfill leachate is entered via waste liquid import in shell, flowing is de- through ammonia nitrogen between film wire
It is flowed out after going out through being exported by landfill leachate, landfill leachate p H values are 8-11, and the p H values of preferable acid absorbing liquid are less than etc.
In 2, the pressure of landfill leachate is not higher than the pressure of sour absorbing liquid and sour absorbing liquid and landfill leachate can be made to flow, and acid absorbs
The temperature of flow quantity 210-350L/h, garbage filter flow quantity 250-350L/h, landfill leachate and sour absorbing liquid is 10-50
DEG C, the TDS values of landfill leachate be less than or equal to 35%, using the garbage filter ammonia nitrogen described in one of claim 1-3 items
Removing membrane module handles landfill leachate.
5. landfill leachate ammonia nitrogen removal method according to claim 4, which is characterized in that the pressure value of landfill leachate
Pressure value for 0.01-0.15MPa, sour absorbing liquid is 0.02-0.15MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610085521.0A CN105621536B (en) | 2016-01-30 | 2016-01-30 | Landfill leachate ammonia nitrogen removal membrane module and landfill leachate ammonia nitrogen removal method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610085521.0A CN105621536B (en) | 2016-01-30 | 2016-01-30 | Landfill leachate ammonia nitrogen removal membrane module and landfill leachate ammonia nitrogen removal method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105621536A CN105621536A (en) | 2016-06-01 |
| CN105621536B true CN105621536B (en) | 2018-10-23 |
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| CN201610085521.0A Active CN105621536B (en) | 2016-01-30 | 2016-01-30 | Landfill leachate ammonia nitrogen removal membrane module and landfill leachate ammonia nitrogen removal method |
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| US5122165A (en) * | 1990-07-10 | 1992-06-16 | International Environmental Systems, Inc. | Removal of volatile compounds and surfactants from liquid |
| CN101508500A (en) * | 2009-03-20 | 2009-08-19 | 厦门凯瑞尔数字环保科技有限公司 | Method for recycling ammonia nitrogen from garbage leachate by using film coagulate contact reactor |
| CN104211244B (en) * | 2013-06-03 | 2016-02-03 | 洁海瑞泉膜技术（北京）有限公司 | Renewable and the gaseous state embrane method process of by-product strong aqua of a kind of absorption agent is containing the method for ammonia feed liquid or waste water |
| CN205381990U (en) * | 2016-01-30 | 2016-07-13 | 秦皇岛同力达环保能源股份有限公司 | Landfill leachate ammonia nitrogen removal device |
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