CN106946320A - One kind processing high salt dangerous waste percolate system and its application method - Google Patents
One kind processing high salt dangerous waste percolate system and its application method Download PDFInfo
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- CN106946320A CN106946320A CN201710243855.0A CN201710243855A CN106946320A CN 106946320 A CN106946320 A CN 106946320A CN 201710243855 A CN201710243855 A CN 201710243855A CN 106946320 A CN106946320 A CN 106946320A
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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
- C02F1/445—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by forward osmosis
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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
- C02F1/447—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
High salt dangerous waste percolate system is handled the present invention relates to one kind, including material liquid side, liquid is drawn to survey and production water side, wherein described material liquid side includes raw material flow container, first gear pump and forward osmosis membrane component, the film activity layer of the forward osmosis membrane component is surveyed to be connected by first gear pump and raw material input channel with raw material flow container, output end is connected by raw material output channel with raw material flow container, the liquid that draws is surveyed including drawing flow container, second gear pump, thermostat water bath, membrane component, first High Precision Low Temperature thermostat, it is described to draw flow container by second gear pump and draw liquid output channel and be connected with thermostat water bath, the thermostat water bath is connected with membrane component, the high temperature side discharge pipe of the membrane component is connected with the first High Precision Low Temperature thermostat, the first High Precision Low Temperature thermostat is connected with the liquid side of drawing of forward osmosis membrane component.The present invention have effluent quality it is good, without impressed pressure, simple operation and other advantages.
Description
Technical field
It is more particularly to a kind of to handle high salt dangerous waste percolate system and its make the invention belongs to water-treatment technology field
Use method.
Background technology
Generally, percolate is the sewage produced by the contact between rubbish and precipitation or other external waters.Hazardous waste is filled out
The percolate of field is buried compared with general percolate, high salt and contains plurality of heavy metal, and biodegradable material contains
Amount is relatively low.For this characteristic of waste water, membrane technology is that a kind of comparison is feasible and effective method.
In recent years, positive infiltration (Forward Osmosis, FO) due to its high rejection to pollutant, low fouling membrane and
The features such as high pollution invertibity, low energy consumption, simple equipment operation be just widely used in the purifying of waste water recycling or water, seawater or
Brackish water desalination, oil, generating, food medicine and other fields.And compared with other separating technologies, Membrane Materials (membrane
Distillation, MD) there is unique property in molecular dynamics, such as in theory can 100% retention pollutant, operation bar
Part is gentle, and when pollutant concentration is higher, performance is still very stable.Membrane Materials can be applied to desalinization, sewage disposal, wave
Hair the property separation of compound, the concentration of non-volatile compounds and the processing of dairy products.It can not only be maintained with reference to film distillation technology
The lasting operation of positive seepage stability, can also improve the removal efficiency of pollutant.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of processing high salt dangerous waste percolate system and its used
Method, positive infiltration and film distillation technology are used in combination, and using percolate as material liquid, sodium chloride solution reaches to draw liquid
Concentrate and remove to pollutant and the positive purpose for permeating long-time steady operation.
The technical solution adopted for the present invention to solve the technical problems is：A kind of processing high salt dangerous waste percolate is provided
System, including material liquid side, draw liquid and survey and production water side, wherein the material liquid side include raw material flow container, first gear pump and
Forward osmosis membrane component, the film activity layer of the forward osmosis membrane component, which is surveyed, passes through first gear pump and raw material input channel and material liquid
Tank connection, output end are connected by raw material output channel with raw material flow container, and the liquid that draws is surveyed including drawing flow container, second gear
Pump, thermostat water bath, membrane component, the first High Precision Low Temperature thermostat, it is described to draw flow container by second gear pump and draw
Liquid output channel is taken to be connected with thermostat water bath, the thermostat water bath is connected with membrane component, the membrane component
High temperature side discharge pipe is connected with the first High Precision Low Temperature thermostat, the first High Precision Low Temperature thermostat and forward osmosis membrane component
Draw the connection of liquid side, the liquid side output end of drawing of the forward osmosis membrane component is connected with drawing flow container, and the water side of producing includes
Water collecting tank, Three gear pump and the second High Precision Low Temperature thermostat are produced, the production water collecting tank passes through Three gear pump and production
Water delivery pipe road is connected with the second High Precision Low Temperature thermostat, the second High Precision Low Temperature thermostat and membrane component low temperature
Side connect, the membrane component discharge pipe with produce water collecting tank be connected, water collecting tank and the raw material flow container respectively with control
Device is connected.
The further technical scheme of the present invention is that the sewage in material liquid is input to forward osmosis membrane by the first gear pump
The film activity layer of component is surveyed, and is returned to by raw material output channel in raw material flow container.
The further technical scheme of the present invention is that the material liquid in the raw material flow container is percolate, described to draw
Take in flow container and draw liquid for concentrated sodium chloride solution.
The further technical scheme of the present invention is that the forward osmosis membrane component can be board-like or rolled film, described just to ooze
Forward osmosis membrane in permeable membrane component is polyamide forward osmosis membrane or Triafol T forward osmosis membrane.
The further technical scheme of the present invention is that the material of the membrane component is high temperature resistant material, and the film steams
It is hydrophobic microfiltration membranes to evaporate the Membrane Materials film in component.
A kind of application method of described a kind of processing high salt dangerous waste percolate system, including following steps:
(a) material liquid side：Using percolate as material liquid, the sewage in material liquid is input to by first gear pump
The film activity layer of forward osmosis membrane component is surveyed, and is returned to by discharge pipe in raw material flow container；
(b) liquid survey is drawn：Using concentrated sodium chloride solution as liquid is drawn, drawing in flow container will be drawn by second gear pump
Liquid is sent in the glass coil pipe for being placed in thermostat water bath, and membrane component high temperature side is entered after heating, then by membrane component
The discharge pipe of high temperature side enters after being cooled down by the first High Precision Low Temperature thermostat to be drawn in flow container；
(c) production water side：A certain amount of deionized water passes through Three gear pump, second as the coolant of pre-add in production water pot
High Precision Low Temperature thermostat enters membrane component low temperature side, is returned to by discharge pipe in production water pot, and in the process sewage
Polluter is trapped within material liquid and drawn in liquid, is just permeating the liquid that draws being diluted and is being concentrated by Membrane Materials, simultaneously
Remove pollutant and make positive seepage stability continuous service.
The further technical scheme of the present invention is, in the step (a), and the forward osmosis membrane assembly operating mode is just
Permeable membrane active layer towards material liquid side, draw liquid side towards drawing liquid side.
The further technical scheme of the present invention is that in the step (a), the material liquid oozes for hazardous waste landfill
Filtrate.
The further technical scheme of the present invention is that the material liquid, positive per-meate side draw liquid, the production of Membrane Materials low temperature side
Coolant-temperature gage should ensure that positive infiltration is corresponding with the water rate of transform of Membrane Materials with the flow velocity for drawing liquid temperature degree of Membrane Materials high temperature side,
And make low pressure or no pressure effect on forward osmosis membrane.
Beneficial effect
Compared with prior art, it is an advantage of the invention that：
The high salt dangerous waste method for treating garbage percolation liquid of the present invention is the high salt dangerous waste percolate of Hyposmolality as raw material
Liquid, the sodium chloride solution of hyperosmosis are as liquid is drawn, and the permeable pressure head by the use of sodium chloride solution and percolate is used as driving force
Allow the water to spontaneously reach through permselectivity membrane from material liquid side and draw liquid-side to realize pollutant under low energy consumption
The retention of matter；The positive theoretical rejection of infiltration binding operation mild condition can not only improve pollutant up to 100% Membrane Materials
Removal efficiency, also solve single positive osmosis process draw liquid be diluted making technique can not long-time steady operation the problem of；FO-
MD be used in conjunction technique have effluent quality it is good, without impressed pressure, simple operation and other advantages, directly can effectively handle biodegradability compared with
Low high salt dangerous waste landfill yard high salt percolate.
Brief description of the drawings
The technological process for the PROCESS FOR TREATMENT percolate that Fig. 1 is combined for the present invention using positive infiltration and film distillation technology
Figure.
Fig. 2 is positive penetration stage (FO stage) and Membrane Materials stage (MD stage) water rate of transform.
The concentration that Fig. 3 is TOC, TN, NH4+-N in 15000mg/L Cl- material liquids changes with time.
When Fig. 4 is that Cl- concentration is 15000mg/L in material liquid, the concentration of TOC, TN, NH4+-N in liquid are drawn with the time
Change.
When Fig. 5 is that Cl- concentration is 15000mg/L in material liquid, the removal of TOC, TN, NH4+-N in FO-MD each stage
Rate is contrasted.
The concentration that Fig. 6 is TOC, TN, NH4+-N in 60000mg/L Cl- material liquids changes with time.
When Fig. 7 is that Cl- concentration is 60000mg/L in material liquid, the concentration of TOC, TN, NH4+-N in liquid are drawn with the time
Change.
When Fig. 8 is that Cl- concentration is 60000mg/L in material liquid, the removal of TOC, TN, NH4+-N in FO-MD each stage
Rate is contrasted.
Fig. 9 is clearances of the FO-MD to Hg, As and Sb under the material liquid of different Cl- concentration.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Embodiment 1
As shown in figure 1, a kind of processing high salt dangerous waste percolate system, including material liquid side, draw liquid and survey and production water
Side, wherein the material liquid side includes raw material flow container 1, first gear pump 2 and forward osmosis membrane component 3, the forward osmosis membrane component 3
Film activity layer survey by first gear pump 2 and raw material input channel 4 is connected with raw material flow container 1, output end is exported by raw material
Pipeline 5 is connected with raw material flow container 1, and the liquid that draws is surveyed including drawing flow container 6, second gear pump 7, thermostat water bath 8, Membrane Materials
Component 9, the first High Precision Low Temperature thermostat 10, it is described to draw flow container 6 by second gear pump 7 and draw liquid output channel and perseverance
Warm water bath 8 is connected, and the thermostat water bath 8 is connected with membrane component 9, the high temperature side discharge pipe of the membrane component 9
It is connected with the first High Precision Low Temperature thermostat 10, the first High Precision Low Temperature thermostat 10 is drawn with forward osmosis membrane component 3
Liquid side is connected, and the liquid side output end of drawing of the forward osmosis membrane component 3 is connected with drawing flow container 6, and the production water side includes production water
Collecting tank 11, the High Precision Low Temperature thermostat 13 of Three gear pump 12 and second, the production water collecting tank 11 pass through Three gear pump
12 and production water delivery pipe road 14 be connected with the second High Precision Low Temperature thermostat 13, the second High Precision Low Temperature thermostat 13 and film
Distill the connection of component 9 low temperature side, the discharge pipe of membrane component 9 is connected with producing water collecting tank 11, the water collecting tank 11 and
Raw material flow container 1 is connected with controller 15 respectively.
The first gear pump 2 surveys the film activity layer that the sewage in material liquid is input to forward osmosis membrane component, by raw material
Output channel 5 is returned in raw material flow container.
Material liquid in the raw material flow container 1 is percolate, and the liquid that draws drawn in flow container 6 is concentrated sodium chloride
Solution.
The forward osmosis membrane component 3 can be that the forward osmosis membrane in board-like or rolled film, the forward osmosis membrane component 3 is polyamides
Amine forward osmosis membrane or Triafol T forward osmosis membrane, the material of the membrane component 9 is high temperature resistant material, the Membrane Materials
Membrane Materials film in component 9 is hydrophobic microfiltration membranes.
A kind of application method of described a kind of processing high salt dangerous waste percolate system, including following steps:
(a) material liquid side：Using percolate as material liquid, the sewage in material liquid is inputted by first gear pump 2
Film activity layer to forward osmosis membrane component 3 is surveyed, and is returned to by discharge pipe in raw material flow container 1, and the method for operation of forward osmosis membrane component 3 is
Forward osmosis membrane active layer towards material liquid side, draw liquid side towards drawing liquid side, the material liquid oozes for hazardous waste landfill
Filtrate.
(b) liquid survey is drawn：Using concentrated sodium chloride solution as liquid is drawn, drawing in flow container 6 will be drawn by second gear pump 7
Take liquid to be sent to be placed in the glass coil pipe of thermostat water bath 8, the high temperature side of membrane component 9 is entered after heating, then by Membrane Materials
The discharge pipe of the high temperature side of component 9 enters after being cooled down by the first High Precision Low Temperature thermostat 10 to be drawn in flow container (6)；
(c) production water side：Produce water pot 11 in a certain amount of deionized water as pre-add coolant by Three gear pump 12,
Second High Precision Low Temperature thermostat 13 enters the low temperature side of membrane component 9, is returned to by discharge pipe in production water pot 11, and the process
Polluter in sewage is trapped within material liquid and drawn in liquid, is just permeating the liquid that draws being diluted and is obtaining dense by Membrane Materials
Contracting, while removing pollutant and making positive seepage stability continuous service.
The material liquid, positive per-meate side draw liquid, the production coolant-temperature gage of Membrane Materials low temperature side and drawing for Membrane Materials high temperature side
The flow velocity of liquid temperature degree should ensure that positive infiltration is corresponding with the water rate of transform of Membrane Materials, and make low pressure or no pressure on forward osmosis membrane
Effect.
As shown in figs 1-9, in the present embodiment, using the percolate of Shanghai City hazardous waste landfill as material liquid,
Volume is 0.5L, draws liquid for 4.84M sodium chloride solutions, volume is 0.5L.
The forward osmosis membrane component is plate film assembly, and plate film assembly is is made by two identical acrylic boards,
Water stream channel a length of 70mm, a width of 30mm, depth is 3mm, and the method for operation is active layer towards material liquid side, and supporting layer is towards drawing
Liquid side, film effective area is 21cm2, forward osmosis membrane is the commercialization TFC-ES films of HTI companies of the U.S., and raw material flow velocity is
0.87L/min, temperature is 15 ± 0.5 DEG C, draws flow velocity for 0.31L/min, and it is 15 ± 0.5 that liquid temperature degree is drawn in positive infiltration survey
DEG C, depending on liquid temperature degree is drawn according to positive osmotic water flux in Membrane Materials side, Membrane Materials production water effluent speed is 0.31L/min, and temperature is
15±0.5℃；The membrane component is plate film assembly, acrylic shell, film effective area 21cm2, water stream channel is a length of
70mm, width is 30mm, and film institute is to depth of groove 3mm, and hydrophobic microfiltration membranes are 0.45 μm of Shanghai Chemical Industry Science Co., Ltd
The PTFE-PVDF hydrophobic membranes in aperture.The transmission of water all uses gear pump, and thermostat water bath is used for heating drawing liquid, and high accuracy is low
Warm thermostat is used for cooling down the penetrating fluid of Membrane Materials production water side and being back to before positive filtration module drawing liquid.
Material liquid and penetrating fluid are placed on electronic balance, by computer record balance data and are preserved for calculating positive infiltration
With membrane distillation water flux.Salt back mixing flux and salt-stopping rate are calculated by measuring the conductivity value change in material liquid, final production water.
Under the operation operating mode of the present embodiment, as shown in figs. 2-9, as Cl in material liquid-Concentration be 15000mg/L and
During 60000mg/L, the hot side optimum temperature in MD (Membrane Materials) stages is respectively 72.5 ± 0.5 DEG C and 62.5 ± 0.5 DEG C, positive infiltration
The water rate of transform with Membrane Materials is basically identical, can maintain the long-time stable fortune of FO-MD (positive infiltration and Membrane Materials) process integration
OK.Water flux is respectively 6.86LMH and 4.76LMH.Cl-Clearance be higher than 96%, and TOC and TN clearance is higher than
98%.NH4 +- N, Hg, As and Sb are completely removed.As a result prove that the FO-MD just infiltrations and Membrane Materials combined system of optimization is applicable
In the high salinity harmful waste water of processing.
The material liquid of table 1 is mainly constituted
Claims (9)
1. one kind processing high salt dangerous waste percolate system, including material liquid side, draw liquid and survey and production water side, its feature exists
In：The material liquid side includes raw material flow container (1), first gear pump (2) and forward osmosis membrane component (3), the forward osmosis membrane group
The film activity layer survey of part (3) is connected by first gear pump (2) and raw material input channel (4) with raw material flow container (1), output end is led to
Raw material output channel (5) is crossed to be connected with raw material flow container (1), it is described draw liquid survey include draw flow container (6), second gear pump (7),
Thermostat water bath (8), membrane component (9), the first High Precision Low Temperature thermostat (10), the flow container (6) that draws is by second
Gear pump (7) and draw liquid output channel and be connected with thermostat water bath (8), the thermostat water bath (8) and membrane component (9)
Connection, the high temperature side discharge pipe of the membrane component (9) is connected with the first High Precision Low Temperature thermostat (10), and described first is high
Precision low temperature thermostat bath (10) is connected with the liquid side of drawing of forward osmosis membrane component (3), and the forward osmosis membrane component (3) draws liquid
Side output end is connected with drawing flow container (6), and it is high that the production water side includes production water collecting tank (11), Three gear pump (12) and second
Precision low temperature thermostat bath (13), the production water collecting tank (11) passes through Three gear pump (12) and production water delivery pipe road (14) and the
Two High Precision Low Temperature thermostats (13) are connected, the second High Precision Low Temperature thermostat (13) and membrane component (9) low temperature side
Connection, membrane component (9) discharge pipe is connected with production water collecting tank (11), the water collecting tank (11) and raw material flow container
(1) it is connected respectively with controller (15).
2. a kind of processing high salt dangerous waste percolate system according to claim 1, it is characterised in that：First tooth
Wheel pump (2) surveys the film activity layer that the sewage in material liquid is input to forward osmosis membrane component, and original is returned to by raw material output channel (5)
In material liquid tank.
3. a kind of processing high salt dangerous waste percolate system according to claim 1, it is characterised in that：The material liquid
Material liquid in tank (1) is percolate, and the liquid that draws drawn in flow container (6) is concentrated sodium chloride solution.
4. a kind of processing high salt dangerous waste percolate system according to claim 1, it is characterised in that：The positive infiltration
Membrane module (3) can be that the forward osmosis membrane in board-like or rolled film, the forward osmosis membrane component (3) is polyamide forward osmosis membrane or three
Cellulose acetate forward osmotic membrane.
5. a kind of processing high salt dangerous waste percolate system according to claim 1, it is characterised in that：The Membrane Materials
The material of component (9) is that the Membrane Materials film in high temperature resistant material, the membrane component (9) is hydrophobic microfiltration membranes.
6. a kind of a kind of application method for handling high salt dangerous waste percolate system as claimed in claim 1, its feature exists
In：Comprise the following steps:
(a) material liquid side：Using percolate as material liquid, the sewage in material liquid is input to by first gear pump (2)
The film activity layer of forward osmosis membrane component (3) is surveyed, and is returned to by discharge pipe in raw material flow container (1)；
(b) liquid survey is drawn：Using concentrated sodium chloride solution as liquid is drawn, drawing in flow container (6) will be drawn by second gear pump (7)
Take liquid to be sent to be placed in the glass coil pipe of thermostat water bath (8), membrane component (9) high temperature side is entered after heating, then by film
The discharge pipe for distilling component (9) high temperature side is drawn in flow container (6) by entering after the cooling of the first High Precision Low Temperature thermostat (10)；
(c) production water side：Produce a certain amount of deionized water in water pot (11) as pre-add coolant by Three gear pump (12),
Second High Precision Low Temperature thermostat (13) enters membrane component (9) low temperature side, is returned to by discharge pipe in production water pot (11), and
Polluter in the process sewage is trapped within material liquid and drawn in liquid, is just permeating the liquid that draws being diluted and is passing through Membrane Materials
Concentrated, while removing pollutant and making positive seepage stability continuous service.
7. a kind of application method for handling high salt dangerous waste percolate system according to claim 4, it is characterised in that：
In the step (a), forward osmosis membrane component (3) method of operation be forward osmosis membrane active layer towards material liquid side, draw liquid
Side direction draws liquid side.
8. a kind of application method for handling high salt dangerous waste percolate system according to claim 4, it is characterised in that：
In the step (a), the material liquid is hazardous waste landfill percolate.
9. a kind of application method for handling high salt dangerous waste percolate system according to claim 4, it is characterised in that：
What the material liquid, positive per-meate side drew liquid, the production coolant-temperature gage of Membrane Materials low temperature side and Membrane Materials high temperature side draws liquid temperature degree
Flow velocity should ensure that positive infiltration is corresponding with the water rate of transform of Membrane Materials, and act on low pressure or no pressure on forward osmosis membrane.
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| CN111875140A (en) * | 2020-07-27 | 2020-11-03 | 扬州大学 | High-phosphorus wastewater treatment device and method based on forward osmosis-membrane distillation technology |
| CN112881637A (en) * | 2021-02-08 | 2021-06-01 | 东华大学 | Visual osmotic membrane treatment wastewater detection device |
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