CN105582813B - A kind of high-throughput Dynamic membrane-separation device of dirt water pollutant concentration - Google Patents
A kind of high-throughput Dynamic membrane-separation device of dirt water pollutant concentration Download PDFInfo
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- CN105582813B CN105582813B CN201610048640.9A CN201610048640A CN105582813B CN 105582813 B CN105582813 B CN 105582813B CN 201610048640 A CN201610048640 A CN 201610048640A CN 105582813 B CN105582813 B CN 105582813B
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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
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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
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/26—Further operations combined with membrane separation processes
- B01D2311/2642—Aggregation, sedimentation, flocculation, precipitation or coagulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2315/00—Details relating to the membrane module operation
- B01D2315/02—Rotation or turning
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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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of high-throughput dynamic film separating methods being suitable for dirty water pollutant concentration, belong to dirty（It is useless）Water-treatment technology field.The device that this method is related to is made of water distributing trough, concentration reactor and rotation dynamic film component, and dynamic film component is placed in concentration reactor.Low concentration municipal wastewater is in water distributing trough after high-molecular coagulant adopting rapid coagulation, enter concentration reactor by one way stop peturn valve, particulate form, the colloidal attitude pollutant in filter sewage are intercepted by dynamic film component, it realizes pollutant concentration, achievees the purpose that improve pollutant resources, energy treatment effeciency.Round Dynamic Membrane in this method rotates under the drive of decelerating motor, and the surface shear stress of formation can effectively limit the generation of fouling membrane, be run steadily in the long term in the case of realization reactor high throughput.
Description
Technical field
The invention belongs to environmental protection, sewage treatment fields, and in particular to a kind of high throughput of dirt water pollutant concentration
Dynamic membrane-separation device.
Background technology
Environmental pollution and shortage of resources are the global problems of 21 century urgent need to resolve, in recent years, with economic society
The raising of development and living standards of the people, urban wastewater discharge increases year by year, the water pollution problems of getting worse constrain through
The development of Ji society.Therefore, the control and improvement of water pollution are very urgent.Meanwhile wastewater pollutants are subjected to energy resource and are turned
Chemical conversion is the focus of people's extensive concern.Municipal sewage treatment at present mostly uses greatly activated sludge process, main processing core
It is the removal for realizing pollutant.With deepening constantly for sewage disposal sustainable development tourism, sewage disposal is gradually by " pollutant
Removal " changes to " sewage recycling, energy processing ".
Anaerobic Microbiological Treatment Technology can convert carbon source to methane, can realize recycling, the energy of sewage.However city
Pollutant concentration is low in city's sewage, directly affects recycling, energy conversion and the organic efficiency of pollutant.Typical city life
COD of sewage content living is between 150 ~ 400 mg/L, and TN is about 15 ~ 40 mg/L, and ammonia nitrogen is about 10 ~ 30 mg/L, and TP is about 1.5
~5 mg/L.Therefore the enriching pollutants concentration for carrying out municipal sewage is the key that realize the energy and recycling of sewage, is sought
The municipal sewage concentration technique of economical and efficient is the active demand in the field.
There are mainly two types of approach for the organic pollutant enrichment concentration reported at present：One is the activated sludge using short sludge age
Absorbing process carries out enrichment concentration to low concentration municipal wastewater, then carries out the recycling of carbon source, energy recycling；It is another
It is the film-bioreactor by short sludge age（MBR）Technique is enriched with and is concentrated to the organic carbon source in sewage.The first is rich
Collect loss of the method for concentration along with pollutant in concentration process（The degradation of microorganism）；Second of method for concentration is equally adjoint
The loss of pollutant, and the sludge concentration obtained is low, it is follow-up to need the processing such as concentration, while the fouling membrane of short sludge age MBR is serious,
Influence system stable operation.
In recent years, membrane separation technique is developed rapidly in sewage treatment field, and dynamic membrane separation technology is due to having
Counter investment is at low cost, control membrane fouling difficulty is small, low power consumption and other advantages and be of concern in sewage treatment field.Dynamic Membrane
（dynamic membrane）It is properly termed as time filming again（secondary membrane）, refer to being situated between by precoating paint or filtering
The film with solid-liquid separation function that particulate matter in matter is formed in macropore substrate surface.The formation of Dynamic Membrane can significantly improve
The intercepting efficiency of macropore base material, wherein macropore base material include mainly the materials such as nylon wire, terylene net, stainless (steel) wire and non-woven fabrics.
Dynamic Membrane, which forms its rear solid-liquid separation effect, can reach the separative efficiency of micro-filtration and ultrafiltration.The Dynamic Membrane being excessively formed can be used
The means such as waterpower cleaning go divided by restore its strainability, cleaning simple and convenient.
Currently, the enrichment concentration for being applied to pollutant in municipal sewage about Dynamic Membrane is also rarely reported.In addition, applying
When Dynamic Membrane carries out the concentration of municipal sewage enriching pollutants, the carbon source loss that be avoided as much as in concentration process needs to adopt
With shorter hydraulic detention time and higher operating flux；However higher operating flux frequently can lead to the excessive of Dynamic Membrane
It is formed（That is the pollution of Dynamic Membrane）, influence the operation stability of system.The present invention is for above-mentioned background, it is proposed that Yi Zhongshi
The dynamic film separating method for being suitable for organic pollutants in domestic wastewater to concentrate, may be implemented the high-throughput stable operation of Dynamic Membrane.
Invention content
It is an object of the invention to propose a kind of high-throughput Dynamic membrane-separation device of dirty water pollutant concentration, pass through object
Change separation means, the concentration of municipal sewage enriching pollutants is realized in shorter hydraulic detention time, improves sewage recycling, energy
Source treatment effeciency.
The high-throughput Dynamic membrane-separation device of a kind of dirty water pollutant concentration proposed by the present invention, by water distributing trough 1, concentration
Reactor 6 and dynamic film component 7 form, wherein：
Water distributing trough 1 is connect with concentration reactor 6 by one way stop peturn valve 11；1 top of water distributing trough is equipped with water inlet pipe 2, water inlet
Pipe 2 is equipped with blow valve 3 for introducing pending sewage, bottom；Water distributing trough 1 is provided with automatic medicine adding apparatus 4 and stirring motor
5, automatic medicine adding apparatus 4 is used to add high-molecular coagulant adopting to water distributing trough 1, and stirring motor 5 is used for high-molecular coagulant adopting and dirt
Water is stirred mixing, ensures the coagulation effect of high-molecular coagulant adopting and enters the uniform of concentration 6 water quality of reactor；Dynamic Membrane group
Part 7 is set in concentration reactor 6, is enriched with to the pollutant in sewage by the filtering interception function of dynamic film component 7
Concentration；7 side of dynamic film component connects decelerating motor 8, drives dynamic film component 7 to rotate by decelerating motor 8, is formed rotary
Dynamic film component 7, surface shear stress can effectively limit the growth of fouling membrane；The other side is connected out by Universal rotary connector 9
Water pump carries out suction water outlet.
In the present invention, dynamic film component 7 is round membrane module, and membrane module thickness is 10 ~ 15 mm.Dynamic film base material is 250
The terylene sieve or nylon screen of ~ 500 mesh, thickness are less than or equal to 1 mm.
In the present invention, Universal rotary connector is ensured by oil sealing in the leakproofness of the connection connection of dynamic film component 7.
In the present invention, decelerating motor rotating speed is 25 ~ 50 rpm, ensures that decelerating motor connects with dynamic film component 7 by oil sealing
The leakproofness connect.
In the present invention, concentration reactor bottom is equipped with mud valve 10.
A kind of application method of the high-throughput Dynamic membrane-separation device of dirty water pollutant concentration of the present invention, specifically
Steps are as follows：
Treatment sewage is initially injected water distributing trough via water distributing trough water inlet pipe, and the macromolecule added with automatic medicine adding apparatus is mixed
After solidifying agent is sufficiently mixed, is entered in concentration reactor by check valve, have the dirt of larger particles first by flocculated sewage
Dye object settles.Meanwhile circular rotating dynamic film component can retain the pollutant of some bulky grains at first so that Dynamic Membrane group
Decreasing pore size on part supporting network forms one layer of anaerobic sludge layer, the shape of sludge blanket on Dynamic Membrane macropore base material later
At enrichment and rejection effect of the macropore base material to pollutant is improved, there is good separation and concentrating function.
Under the drive of decelerating motor, there are surface shear stress during dynamic membrane filtering, can effectively limit pollutant
In the deposition of film surface, the rate of fouling membrane is reduced, improves the cycle of operation of Dynamic membrane-separation.With the extension of run time,
After have passed through prolonged filtering crown_interception, the pollutant being deposited on dynamic film component can be increasingly thicker, dynamic membrane aperture
It further reduces, flux depression, operation energy consumption increases, and needs to clean Dynamic Membrane at this time.The rotation Dynamic Membrane of the present invention
Waterpower cleaning may be used, physics the methods of is scraped and to be cleaned.
The present invention has the following advantages：
（1）Dynamic Membrane using macropore base material be used as supporting layer, materials be easy, it is cheap, and Dynamic Membrane formation the time compared with
Dynamic Membrane that is short, being excessively formed（That is dynamic fouling membrane）Cleaning way is simple.
（2）By adding high-molecular coagulant adopting, the separation of particulate form and colloidal organic substrate in sewage can be significantly improved
Effect and settling property promote the separation concentrated effect in subsequent concentration reactor.
（3）Circular rotating dynamic film component can be in 60 ~ 120 L/ (m of high throughput2H) 25 ~ 35 d of stable operation under, rotation
Rotating state film being capable of effective concentration pollutant, reduction delivery turbidity and COD contents.
（4）Hydraulic detention time is shorter, is 30 ~ 60 min, and system need not be aerated, and carbon source is damaged in pollutant concentration process
It loses few.
（5）Rotation Dynamic Membrane rotating speed is relatively low, and the energy consumption of required decelerating motor is smaller.
Description of the drawings
Fig. 1 is a kind of high-throughput Dynamic membrane-separation schematic device of dirty water pollutant concentration of the present invention.
Fig. 2 is round dynamic film component structural schematic diagram.
Figure label is：1 is water distributing trough；2 be water inlet pipe；3 be blow valve；4 be automatic medicine adding apparatus；5 be stirring motor；
6 be concentration reactor；7 be dynamic film component；8 be decelerating motor；9 be Universal rotary connector；10 be mud valve, and 11 stop to be unidirectional
Return valve.
Specific implementation mode
It is further illustrated the present invention below by embodiment combination attached drawing.
Embodiment 1：As shown, 1 top of water distributing trough is equipped with water inlet pipe 2, water inlet pipe is for introducing pending sewage, bottom
Portion is equipped with blow valve 3.Water distributing trough setting automatic medicine adding apparatus 4 is used to add high-molecular coagulant adopting to water distributing trough, and stirring motor 5
Mixing is stirred to high-molecular coagulant adopting and sewage, ensure the coagulation effect of high-molecular coagulant adopting and enters concentration reactor 6
Water quality it is uniform.It concentrates and is equipped with round dynamic film component 7 in reactor, pollutant is carried out by the filtering interception function of Dynamic Membrane
Enrichment concentration.Dynamic Membrane side drives Dynamic Membrane rotation by decelerating motor 8, forms rotary Dynamic Membrane, surface shear stress
The growth of fouling membrane can effectively be limited；The other side connects water outlet pump by Universal rotary connector 9 and carries out suction water outlet.Slow down electricity
Machine and Universal rotary connector rely on the leakproofness that oil sealing ensures connection.It concentrates reactor bottom and is equipped with mud valve 10.Water distributing trough
It is connect by one way stop peturn valve 11 with concentration reactor.It is round membrane module to concentrate the dynamic film component in reactor, and membrane module is thick
Degree is 10 ~ 15 mm.Dynamic film base material is the terylene sieve or nylon screen of 250 ~ 500 mesh, and thickness is less than or equal to 1 mm.It is round
Rotation Dynamic Membrane water outlet is connect by Universal rotary connector with suction pump, ensures Universal rotary connector and rotation film group using oil sealing
Part connection sealing.It is 25 ~ 50 rpm that circular rotating Dynamic Membrane drives rotation, rotating speed by decelerating motor, is ensured using oil sealing
The leakproofness that decelerating motor is connect with rotation membrane module.
By above-mentioned apparatus for handling certain southern city domestic sewage, using poly-ferric chloride PFC as macromolecule coagulation
Agent, dosage are PFC/ tons of water of 50 g, and sewage is in water distributing trough after rapid coagulation, and into concentrating, progress sewage in reactor is dense
Contracting, hydraulic detention time are 30 min.Concentration reactor inward turning rotating state membrane module flux is 100 L/ (m2H), rotating speed is
25 rpm.Certain southern city domestic sewage of device processing, inlet COD concentration are 274.9 ± 57.9 mg/L, wherein particulate form
A concentration of 122.2 ± 31.2 mg/L of COD；Effluent COD concentration is 134.2 ± 22.8 mg/L, and wherein particulate form COD is a concentration of
18.6±5.9 mg/L.Concentrate a concentration of 8322 ± 1843 mg/L of concentration carbon source COD of reactor bottom recycling, cycles of concentration
It is 30 times.
Embodiment 2：Device as described in Example 1 is for concentrating certain city domestic sewage, using chitosan quaternary ammonium salt HACC
As high-molecular coagulant adopting, dosage is HACC/ tons of water of 20 g, and sewage after rapid coagulation, reacts in water distributing trough into concentration
Sewage concentration is carried out in device, hydraulic detention time is 60 min.Concentration reactor inward turning rotating state membrane module flux is 60 L/
(m2H), rotating speed is 30 rpm.Inlet COD concentration between 180.2 ~ 533.6 mg/L, average influent COD is 256.4 ±
A concentration of 132.1 ± 22.8 mg/L of 81.1 mg/L, wherein particulate form COD；Effluent COD concentration is put down in 88.5 ~ 164.2 mg/L
Water outlet COD is 102.6 ± 24.4 mg/L, a concentration of 12.2 ± 8.4 mg/L of wherein particulate form COD.Concentrate reactor bottom
A concentration of 11166 ± 2011 mg/L of concentration carbon source COD of recycling, cycles of concentration are 44 times.
Embodiment 3：Device as described in Example 1 is for concentrating certain rural area sanitary sewage, using chitosan quaternary ammonium salt
For HACC as high-molecular coagulant adopting, dosage is HACC/ tons of water of 18 g, and sewage is in water distributing trough after rapid coagulation, into concentration
Sewage concentration is carried out in reactor, hydraulic detention time is 40 min.It is 90 to concentrate reactor inward turning rotating state membrane module flux
L/(m2H), rotating speed is 25 rpm.Inlet COD concentration between 128.2 ~ 298.6 mg/L, average influent COD is 196.4 ±
A concentration of 82.3 ± 28.5 mg/L of 52.1 mg/L, wherein particulate form COD；Effluent COD concentration is put down in 58.5 ~ 134.2 mg/L
Water outlet COD is 92.5 ± 18.6 mg/L, a concentration of 10.5 ± 7.8 mg/L of wherein particulate form COD.Reactor bottom is concentrated to return
A concentration of 7215 ± 1818 mg/L of concentration carbon source COD of receipts, cycles of concentration are 37 times.
Claims (4)
1. a kind of high-throughput Dynamic membrane-separation device of dirt water pollutant concentration, it is characterised in that by water distributing trough（1）, concentration it is anti-
Answer device（6）And dynamic film component（7）Composition, wherein：
Water distributing trough（1）With concentration reactor（6）Pass through one way stop peturn valve（11）Connection；Water distributing trough（1）Top is equipped with water inlet pipe
（2）, water inlet pipe（2）For introducing pending sewage, bottom is equipped with blow valve（3）；Water distributing trough（1）It is provided with Automatic Dosing dress
It sets（4）And stirring motor（5）, automatic medicine adding apparatus（4）For to water distributing trough（1）Add high-molecular coagulant adopting, stirring motor（5）
For being stirred mixing to high-molecular coagulant adopting and sewage, ensureing the coagulation effect of high-molecular coagulant adopting and entering concentration reaction
Device（6）Water quality it is uniform；Dynamic film component（7）It is set to concentration reactor（6）It is interior, by dynamic film component（7）Filtering block
The effect of cutting carries out enrichment concentration to the pollutant in sewage；Dynamic film component（7）Side connects decelerating motor（8）, pass through deceleration
Motor（8）Drive dynamic film component（7）Rotation, forms rotary dynamic film component（7）, surface shear stress can effectively limit film
The growth of pollution；The other side passes through Universal rotary connector（9）Water outlet pump is connected, suction water outlet is carried out；The high-molecular coagulant adopting
Using poly-ferric chloride or chitosan quaternary ammonium salt；Universal rotary connector is ensured by oil sealing in connection dynamic film component（7）Connection
Leakproofness.
2. a kind of high-throughput Dynamic membrane-separation device of dirty water pollutant concentration according to claim 1, feature exist
In dynamic film component（7）For round membrane module, membrane module thickness is 10 ~ 15 mm；Dynamic film base material is the terylene of 250 ~ 500 mesh
Sieve or nylon screen, thickness are less than or equal to 1 mm.
3. a kind of high-throughput Dynamic membrane-separation device of dirty water pollutant concentration according to claim 1, it is characterised in that
Decelerating motor rotating speed is 25 ~ 50 rpm, ensures decelerating motor and dynamic film component by oil sealing（7）The leakproofness of connection.
4. a kind of high-throughput Dynamic membrane-separation device of dirty water pollutant concentration according to claim 1, it is characterised in that
It concentrates reactor bottom and is equipped with mud valve（10）.
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| CN201610048640.9A CN105582813B (en) | 2016-01-26 | 2016-01-26 | A kind of high-throughput Dynamic membrane-separation device of dirt water pollutant concentration |
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| CN201610048640.9A CN105582813B (en) | 2016-01-26 | 2016-01-26 | A kind of high-throughput Dynamic membrane-separation device of dirt water pollutant concentration |
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| CN105582813B true CN105582813B (en) | 2018-10-26 |
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| CN105948327A (en) * | 2016-06-26 | 2016-09-21 | 福建碧蓝环保股份公司 | Wastewater zero discharging treatment integrated equipment |
| CN108191093A (en) * | 2017-12-29 | 2018-06-22 | 中国海洋石油集团有限公司 | A kind of air supporting-Dynamic Membrane integrated separation device and separation method suitable for condensed oil sewage processing |
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| CN102964010B (en) * | 2012-12-12 | 2014-05-28 | 北京碧水源科技股份有限公司 | Method for deeply treating nonbiodegradable sewage |
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