CN106215700B - A kind of ultrafiltration system for percolate processing - Google Patents
A kind of ultrafiltration system for percolate processing Download PDFInfo
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- CN106215700B CN106215700B CN201610614175.0A CN201610614175A CN106215700B CN 106215700 B CN106215700 B CN 106215700B CN 201610614175 A CN201610614175 A CN 201610614175A CN 106215700 B CN106215700 B CN 106215700B
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- filter
- rinsing area
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- membrane
- clear water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/18—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
- B01D65/06—Membrane cleaning or sterilisation ; Membrane regeneration with special washing compositions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to percolate filtration application technical fields, specifically disclose a kind of ultrafiltration system for percolate processing, including sump, mixing sink, filter, powder charge tank, Rinsing Area and waste liquid adjuster, the clear water in sewage and Rinsing Area in sump flows into mixing sink, through filter, filtered clear water flows into Rinsing Area, and concentrate then flows back to mixing sink, forms filtration system；When Membrane cleaning, the clear water in Rinsing Area blows back into filter, backwashes to the ultrafiltration membrane in filter, and flushing water enters waste liquid conditioning tank, forms back-purge system；When fouling membrane is serious, the chemical reagent in powder charge tank flows into filter, first carries out chemical flush to ultrafiltration membrane, then backwashed with the clear water in Rinsing Area.Ultrafiltration membrane is surface through the modified PVDF hollow-fibre membrane of plasma polymerization, has excellent separating property, increases the contamination resistance of film.Ultrafiltration system structure of the present invention is simple, saves cost.
Description
Technical field
The present invention relates to field of environment protection, and in particular to a kind of ultrafiltration membrane for two stage treatment landfill leachate and
Its matched ultrafiltration system.
Background technique
Since early 1980s, China starts using heat resistance, chemical resistance, the erosion of resistance to bacterium and preferable machinery
Pattern-making material of the special engineered high molecular material of intensity as ultrafiltration membrane overcomes many of pristine fibre element class material film
It is insufficient.In the past 20 years, China ultrafiltration membrane development and application have significant progress and progress, successively occur polysulfones (PS),
High molecular materials, these materials such as polyacrylonitrile (PAN) Kynoar (PVDF), polyether-ketone (PEK), polyether sulfone (PES) make
The kind and application range of film greatly increase.But due to these polymer surfaces different hydrophobicity and roughness, with
And mechanical strength is insufficient, be easy to cause film surface to pollute, water flux is caused to decline, separative efficiency reduces, the service life phase of film
To shorter, cost is opposite to be improved, and plasma polymerization modified ultrafiltration membrane can improve membrane structure, improves working efficiency, relative to
Common ultrafiltration membrane has better hydrophily, porosity more evenly, stronger obstruction rate.
The regeneration of film is divided to physics and chemical two classes at present.Chemical method is divided into alkali cleaning and pickling again, is easily destroyed film table
Face structure reduces membrane lifetime, while ejected wash water also needs in addition to handle, higher cost.Physical method is predominantly recoiled with tap water
It washes, the method is simpler with respect to chemical method, survivable membrane superficial tissue, but need to expend a large amount of tap water.
Organic matter, ammonia nitrogen concentration in landfill leachate is high, and wherein heavy metal ion and levels of toxic substances are higher, and
Concentration is unstable；Since the C/N in percolate is out of proportion, and lack P elements, common microbiological treatment can not be complete
Pollutant in load degradation percolate.
Summary of the invention
The object of the present invention is to provide a kind of ultrafiltration membrane applied to landfill leachate two stage treatment, structurally reasonable, works
Make efficiently, relative to common ultrafiltration membrane, there is better hydrophily, porosity more evenly, stronger obstruction rate.It provides simultaneously
A kind of ultrafiltration system to match.
The object of the invention is achieved through the following technical solutions:
A kind of ultrafiltration system for percolate processing, which is characterized in that including sump, mixing sink, filter, dress
Medicinal cupping, Rinsing Area and waste liquid adjuster, the clear water in sewage and Rinsing Area in sump flows into mixing sink, through filtering
Device, filtered clear water flow into Rinsing Area, and concentrate then flows back to mixing sink, form filtration system；When Membrane cleaning, Rinsing Area
In clear water blow back into filter, the ultrafiltration membrane in filter is backwashed, flushing water enters waste liquid conditioning tank, is formed anti-
Rinse-system；When fouling membrane is serious, the chemical reagent in powder charge tank flows into filter, first carries out chemical flush to ultrafiltration membrane,
It is backwashed again with the clear water in Rinsing Area, flushing water enters waste liquid conditioning tank, discharges again after carrying out acid-base accommodation.
The sump with mix sink, filter and Rinsing Area successively pipeline connection, the concentrated solution outlet of filter with
Mix the entrance connection of sink；The water outlet of Rinsing Area is connected to mixing sink pipe road；The powder charge tank is connected to filter；Institute
Filter water inlet is stated also to be connected to waste liquid adjuster.
Pipeline between the Rinsing Area and filter is equipped with a two-way pump.
Blender is had in the mixing sink.
The Rinsing Area entrance connects clear water pipeline, is furnished with buffer on clear water pipeline.
Rinsing Area with mix between sink, mixing sink and filter, powder charge tank and filter and sump and mixed
One-way water pump is respectively mounted between Heshui slot.
The ultrafiltration membrane uses PVDF hollow-fibre membrane, and surface is through plasma polymerization modification.
The plasma polymerization is modified to be handled as follows: homogeneous bulky is made in PVDF heating, with 1- vinyl imidazol
It is put into plasma reactor to be reacted, is finally putting into condenser pipe, modified material is made, last biofilm uses.
The surface of ultrafiltration membrane is carried out plasma polymerization and is modified by the present invention, and principle is to be excited by physics radiation mode
The polymer molecule of film surface, and new polymerization reaction occurs with hydrophilic other polymers, change film surface physics and
Chemical property, to make modified film that there is excellent separating property (antipollution, high water flux, high salt rejection).This
The modified porosity for increasing film of kind, while the hydrophily of film surface is increased, increase the water flux of film, the increasing of hydraulic impact
Ambassador's film surface is not easy to be contaminated, and increases the contamination resistance of film, reduces the interval time that film regeneration is rinsed, reduces
The cost of film maintenance.
Compared with prior art, the invention has the following advantages: (1) by raw sewage, concentration sewage, reflux clear water in
It is mixed in mixing water pot, facilitates and every flow is adjusted according to concentration, it is unstable more to can solve Landfill Leachate Pollutants concentration
The problem of；Can prevent the sewage entered in filter device again is more than the load of filter, the impact resistance of lifting system.
(2) chemical cleaning method is combined into the advantage of two class methods, while saving in conjunction with physics backwash ablution
The dosage of chemicals.
(3) it is backwashed using filtering clear water, substantial saved the dosage of tap water, more save the cost；Using double
To pump, cost and space, the complexity for simplifying pipeline are saved；The utilization of waste liquid conditioning tank prevents excessive in water for cleaning
Acid-base pair environment carry out secondary pollution.
(4) ultrafiltration membrane provided by the invention is surface through the modified PVDF hollow-fibre membrane of plasma polymerization, and structure is closed
Reason, efficient work have better hydrophily, porosity more evenly, stronger obstruction rate, very relative to common ultrafiltration membrane
Big degree improves the performance of film, extend film using time and the time interval of flushing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ultrafiltration system of the present invention.
Specific embodiment
Embodiment combination attached drawing and embodiment specifically illustrate explanation.
Embodiment 1
As shown in Fig. 1, a kind of ultrafiltration system for percolate processing, including sump 1, mixing sink 2, filter
4, powder charge tank 7, Rinsing Area 10 and waste liquid adjuster 5, the sump 1 with mix sink 2, filter 4 and Rinsing Area 10 successively
The concentrated solution outlet of pipeline connection, filter 4 is connect with the entrance of mixing sink 2；The water outlet of Rinsing Area 10 with mix sink 2
Pipeline connection；The powder charge tank 7 is connected to filter 4；Be equipped with ultrafiltration membrane in the filter 4,4 water inlet of filter also with it is useless
Liquid adjuster 5 is connected to.Pipeline between the Rinsing Area 10 and filter 4 is equipped with a two-way pump 6.In Rinsing Area 10 and mix
Heshui slot 2, mixing sink 2 between filter 4, powder charge tank 7 and filter 4 and sump 1 is pacified between sink 2 with mixing
Fill one-way water pump 3.Blender is had in the mixing sink 2.10 entrance of Rinsing Area connects clear water pipeline, on clear water pipeline
Equipped with buffer 11.
The clear water in sewage and Rinsing Area 10 in sump 1 flows into mixing sink 2, and mixed sewage is through filter
4, filtered clear water flows into Rinsing Area 10, and concentrate then flows back to mixing sink 2, above-mentioned composition filtration system.
When Membrane cleaning, the clear water in Rinsing Area blows back into filter, backwashes to ultrafiltration membrane, and flushing water enters useless
Liquid conditioning tank；When fouling membrane is serious, the chemical reagent in powder charge tank flows into filter to ultrafiltration membrane progress chemical flush, then into
Row backwash, the above composition cleaning system.
When system is filtered, the water pump on each pipeline is adjusted, two-way pump water (flow) direction is that filter flows to clear water
Slot, water flow by sump flow to mixing sink be circulated throughout drainage and condensed water mixes and enters Rinsing Area through filter.Work as system
When carrying out Membrane cleaning work, the water pump between mixing sink and filter is closed, opens the water pump between powder charge tank and filter,
Purge valve is opened simultaneously, adjusting two-way pump direction is that Rinsing Area flows to filter, increases water flow pressure, makes backwashing water through filtering
Device enters waste liquid conditioning tank, and flushing water enters waste liquid conditioning tank, discharges again after carrying out acid-base accommodation.It, can when fouling membrane is serious
First start valve on powder charge tank, so that the chemical reagent in powder charge tank is flowed into filter and chemical flush is carried out to ultrafiltration membrane, then carry out
Backwash, the above composition cleaning system.
Pure water usage amount is greatly saved in the device compared with common ultrafiltration apparatus, while improving obstruction rate and pure water
Flux, as shown in the table.
Embodiment 2
The present embodiment difference from example 1 is that:
Present apparatus ultrafiltration membrane uses PVDF hollow-fibre membrane, homogeneous bulky is made in PVDF heating, with 1- vinyl imidazole
It is put into plasma reactor to be reacted using AC power frequency electric discharge, is finally putting into condenser pipe, modified material is made, finally
Biofilm uses.Plasma modification significantly increases the porosity on its surface, while reducing the size of average pore size, average
Aperture is 0.04-0.05 μm, and obstruction rate greatly improves, and is tested modified ultrafiltration membrane, big to the average obstruction rate of organic matter
In 92%, increase by 10% compared with unmodified, while water flux can reach 298L/m2H is above unmodified ultrafiltration membrane 235L/
m2h。
Claims (6)
1. a kind of ultrafiltration system for percolate processing, which is characterized in that including sump, mixing sink, filter, powder charge
Tank, Rinsing Area and waste liquid adjuster, the clear water in sewage and Rinsing Area in sump flow into mixing sink, through filter,
Filtered clear water flows into Rinsing Area, and concentrate then flows back to mixing sink, forms filtration system；When Membrane cleaning, in Rinsing Area
Clear water blow back into filter, the ultrafiltration membrane in filter is backwashed, flushing water enters waste liquid conditioning tank, forms recoil
Wash system；When fouling membrane is serious, the chemical reagent in powder charge tank flows into filter, first carries out chemical flush to ultrafiltration membrane, then
It is backwashed with the clear water in Rinsing Area；
The ultrafiltration membrane uses PVDF hollow-fibre membrane, and surface is through plasma polymerization modification；
The plasma polymerization modification: being made homogeneous bulky for PVDF heating, with 1- vinyl imidazole be put into etc. from
Daughter reactor is reacted, and condenser pipe is finally putting into, and modified material is made.
2. ultrafiltration system according to claim 1, which is characterized in that the sump with mix sink, filter and clear
Successively pipeline connection, the concentrated solution outlet of filter are connect sink with the entrance of mixing sink；The water outlet of Rinsing Area with mix
Sink pipeline connection；The powder charge tank is connected to filter；The filter water inlet is also connected to waste liquid adjuster.
3. ultrafiltration system according to claim 2, which is characterized in that set on the pipeline between the Rinsing Area and filter
There is a two-way pump.
4. ultrafiltration system according to claim 1 or 2 or 3, which is characterized in that have blender in the mixing sink.
5. ultrafiltration system according to claim 4, which is characterized in that the Rinsing Area entrance connects clear water pipeline, clear water
It is furnished with buffer on pipeline.
6. ultrafiltration system according to claim 5, which is characterized in that Rinsing Area with mix sink, mixing sink and mistake
Between filter, powder charge tank and filter and sump is respectively mounted one-way water pump with mixing between sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610614175.0A CN106215700B (en) | 2016-07-29 | 2016-07-29 | A kind of ultrafiltration system for percolate processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610614175.0A CN106215700B (en) | 2016-07-29 | 2016-07-29 | A kind of ultrafiltration system for percolate processing |
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| CN106215700A CN106215700A (en) | 2016-12-14 |
| CN106215700B true CN106215700B (en) | 2019-01-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219838A (en) * | 2008-01-25 | 2008-07-16 | 北京交通大学 | Method for processing heavy metal industrial waste water with low concentration |
| CN101284213A (en) * | 2008-05-30 | 2008-10-15 | 北京汉青天朗水处理科技有限公司 | Method and apparatus for cleaning film separation equipment |
| CN101311127A (en) * | 2008-04-16 | 2008-11-26 | 北京清大国华环保科技有限公司 | Method and device for treating a great variety of waste emulsion of high concentration using hyperfiltration membrane method |
| CN105413477A (en) * | 2015-11-12 | 2016-03-23 | 中联重科股份有限公司 | Membrane assembly performance detection equipment |
| CN206103720U (en) * | 2016-07-29 | 2017-04-19 | 华南理工大学 | A ultrafiltration system for leachate treatment |
-
2016
- 2016-07-29 CN CN201610614175.0A patent/CN106215700B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219838A (en) * | 2008-01-25 | 2008-07-16 | 北京交通大学 | Method for processing heavy metal industrial waste water with low concentration |
| CN101311127A (en) * | 2008-04-16 | 2008-11-26 | 北京清大国华环保科技有限公司 | Method and device for treating a great variety of waste emulsion of high concentration using hyperfiltration membrane method |
| CN101284213A (en) * | 2008-05-30 | 2008-10-15 | 北京汉青天朗水处理科技有限公司 | Method and apparatus for cleaning film separation equipment |
| CN105413477A (en) * | 2015-11-12 | 2016-03-23 | 中联重科股份有限公司 | Membrane assembly performance detection equipment |
| CN206103720U (en) * | 2016-07-29 | 2017-04-19 | 华南理工大学 | A ultrafiltration system for leachate treatment |
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| Publication number | Publication date |
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| CN106215700A (en) | 2016-12-14 |
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