CN108046482A - A kind of organic concentration wastewater treatment method of high salinity high rigidity difficult degradation and system - Google Patents
A kind of organic concentration wastewater treatment method of high salinity high rigidity difficult degradation and system Download PDFInfo
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- CN108046482A CN108046482A CN201810083508.0A CN201810083508A CN108046482A CN 108046482 A CN108046482 A CN 108046482A CN 201810083508 A CN201810083508 A CN 201810083508A CN 108046482 A CN108046482 A CN 108046482A
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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
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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
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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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
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Abstract
The invention discloses a kind of high organic concentration wastewater treatment methods of salinity high rigidity difficult degradation, comprise the following steps：(1) organic concentration waste water is passed through preconditioned device and carries out water quality adjustment, it is 68 to adjust pH, and then addition conditioning medicament, staticly settles；(2) through step (1), treated that organic concentration waste water enters that separation membrane device carries out membrane separation, is filtered under the pressure of 6 15bar, water enters processing in next step through seperation film；(3) water that membrane separation comes out enters high pressure reverse osmosis unit into horizontal high voltage reverse-osmosis treated, goes monovalent salt and contaminant remaining in water removal, makes water outlet qualified discharge and reuse.The invention also discloses the systems for realizing the above method.The present invention first reduces the hardness of waste water, and the organic matter in organic concentration waste water is separated using UF membrane mode, finally into horizontal high voltage reverse-osmosis treated, monovalent salt, remaining organic and inorganic pollution is separated, make the final qualified discharge of water outlet.
Description
Technical field
The present invention relates to sewage water treatment method more particularly to a kind of organic concentration wastewater treatments of high salinity high rigidity difficult degradation
Method.The invention further relates to a kind of high organic concentration waste water treatment systems of salinity high rigidity difficult degradation.
Background technology
At present, study both at home and abroad it is more have coking wastewater, pharmacy waste water (including traditional Chinese medicine wastewater), petrochemical industry/oils waste water,
The professionals such as Fine Chemistry Wastewater, paint waste water, landfill leachate waste water is past after conventional materialization, biochemical treatment is passed through
Toward needing to can be only achieved discharge standard requirement, and nanofiltration, reverse osmosis process after carrying out advanced treating using nanofiltration, reverse osmosis process
20~30% concentrate can be generated, is high salinity, high rigidity, difficult degradation organic film concentration waste water.High salinity, high rigidity,
Difficult degradation organic film concentration waste water quality has both higher hardness, the organic pollutant of high concentration, the salinity of high concentration, it is difficult to
The features such as biochemical degradation.So-called " high rigidity " refers to that the total hardness of this kind of waste water is higher, generally in more than 2000mg/L；It is " difficult
Degradation " refers to that the biodegradability of this kind of waste water is relatively low, BOD5/ COD value is even lower generally below 0.1, it is difficult to biology drop
Solution；Such wastewater organic pollutant concentration is higher simultaneously, generally in more than 2000mg/L, some be even as high as every liter it is tens of thousands of to ten
Tens of thousands of milligrams.Processing for this kind of such waste water of waste water is the problem that sewage disposal circle both at home and abroad is generally acknowledged at present.Locate at this stage
Manage with high salt, high rigidity, the technique of difficult degradation organic film concentration waste water mainly has advanced oxidation processes, biological treatment and evaporation
Crystallization processes.
Advanced oxidation processes are intended to by adding oxidant, by most of larger molecular organics chain rupture, shape in organic wastewater
Into carbon dioxide and water, achieve the purpose that handle organic wastewater.Advanced oxidation processes mainly have photochemical catalytic oxidation, Fenton chemical oxygen
Change, ozone, hydrogen peroxide oxidation etc..During day-to-day operation, Fenton chemical oxidation, hydrogen peroxide oxidation need to add a large amount of medicaments,
Operating cost is high.Photocatalyst ozone oxidation cost of investment is higher, and power consumption is larger.And oxidation technology to salinity without removal
Effect, need to use with other process integrations.
Bioanalysis is mainly anaerobic hydrolysis technique, and the mechanism of action is in hydrolysis (acidifying) stage, profit by anaerobic digestion control
It is acted on hydrolysed ferment, within a short period of time dissolves the insoluble organic matter in organic wastewater, soluble hardly degraded organic substance
Molecular structure changes, and part cyclic object open loop, macromolecules degradation is small molecule, so as to mitigate the processing load of aerobic section and
To the inhibitory action of aerobic microbiological, COD removal rates are improved.But this method essence or the absorption degradation effect using microorganism
Handle pollutant, limitation is larger, when organic matter has hardness, salinity are higher in bio-toxicity and waste water when be easy to cause life
Change system crash.
Evaporative crystallization technique is to carry out heating evaporation processing to high rigidity organic wastewater with difficult degradation thereby using high-temperature steam, can be incited somebody to action
Organic wastewater is separated into clear water and organic matter, salinity.But evaporator cost is higher, and needs to consume substantial amounts of heat in the process of running
Amount；Engineering one-time investment and running cost are higher, and ton water process expense is often as high as 50 yuan or more；And with concentration times
Several increases, the organic matter and salt of organic wastewater analyze, and form fouling, need to consume substantial amounts of soda acid and be cleaned, to equipment
Seriously corroded；And it is danger wastes that evaporative crystallization, which generates solid, need to be recycled by professional qualification company.Disadvantages mentioned above
Greatly limit the application range of the technique.
Chinese patent ZL 201210275572.1 discloses a kind of processing method of high rigidity organic wastewater with difficult degradation thereby,
Using the organic matter in oil removal precipitation, coagulation air-float, micro-electrolysis reaction, ultraviolet Fenton oxidation process waste water, water outlet into
Enter and handled in Sewage Disposal biochemical system.This method is the combination of light electrolysis+ultraviolet Fenton oxidation, and this method is to having
Machine object oxidation effectiveness is preferable, but micro-electrolysis stuffing is with the growth of run time and the pollution of organic matter, and due to hard in waste water
Degree is higher, and filler is easily hardened dirty stifled；Ultraviolet Fenton process sections dosage is larger, and generates substantial amounts of sludge, need to carry out two
Secondary disposal.
103626314 A of Chinese patent application CN disclose a kind of high rigidity organic wastewater with difficult degradation thereby-landfill leachate thick
Contracting liquor treating process uses two-stage material membranous system to carry out concentrating and separating to landfill leachate nanofiltration concentrate.The technique according to
Purely physical separation is carried out by membranous system, simply merely pollutant is transferred in dope.And due to one section of concentration, two sections
Membranous system operating pressure is higher, and operating cost is larger.Further, since the limitation of nanofiltration membrane aperture, two-stage film process can only separate
Part divalent ion to monovalent salt substantially without centrifugation, is unfavorable for the stable operation of system.
The content of the invention
An object of the present invention is to provide a kind of organic concentration wastewater treatment method of high salinity high rigidity difficult degradation, full
On the premise of sufficient Sewage Disposal monolithic stability operation, by preconditioned, the fouling factor concentration in waste water is reduced, is then entered
The organic matter in organic concentration waste water is separated using UF membrane mode, finally into horizontal high voltage reverse-osmosis treated, to monovalence
Salt, remaining organic and inorganic pollution are separated, and make the final qualified discharge of water outlet.
The second object of the present invention is to provide the system for realizing the above method.
An object of the present invention is to be achieved through the following technical solutions：A kind of high salinity high rigidity difficult degradation is organic dense
Contracting wastewater treatment method, comprises the following steps：
(1) preconditioned：Organic concentration waste water is passed through preconditioned device and carries out water quality adjustment, adjusting pH is 6-8, Ran Houtian
Add conditioning medicament, staticly settle, the foulings factor such as calcium, magnesium and silicon ion in removing waste water；
(2) UF membrane：Through step (1), treated that organic concentration waste water enters that separation membrane device carries out membrane separation,
It is filtered under the pressure of 6-15bar, separates organic pollution and water, water enters through seperation film to be handled in next step；
(3) high pressure is reverse osmosis：The water that membrane separation comes out enters high pressure reverse osmosis unit into horizontal high voltage reverse-osmosis treated,
Monovalent salt and contaminant remaining in water removal are gone, makes water outlet qualified discharge and reuse.
Organic concentration waste water of the present invention includes machine film concentration waste water, such as nanofiltration concentrate, landfill leachate thick
Contracting liquid etc..
In the step (1), pH adjustings are carried out to organic concentration waste water using hydrochloric acid, sodium hydroxide and lime etc.；Institute
Stating conditioning medicament mainly has more than one or both of sodium hydroxide, sodium carbonate, lime and calcium carbonate etc. combination；Nurse one's health medicine
Calcium, magnesium and silicon ion of the specific dosage of ratio and conditioning medicament in agent between each component in organic concentration waste water
Concentration carries out calculating adjustment.
In the step (2), preferably use can separate organic matter of the molecular weight more than 500 dalton in separation membrane device
Separating film module.
In the step (3), the high pressure reverse osmosis membrane assembly of high pressure reverse osmosis unit uses network pipe type and superposed pipe film group
Part, water inlet pH value are adjusted to 6~8 or so, and operating pressure is between 60~90bar.
Present invention additionally comprises the high pressure reverse osmosis membrane groups of the separating film module to separation membrane device and high pressure reverse osmosis unit
Part carries out cleaning step, when separating film module and high pressure reverse osmosis membrane assembly processing capacity decline, has for pollutant type
The corresponding cleaning agents of membrane of use of selectivity carries out cleaning recovery to membrane component.When the pollution factor for influencing film properties is dirty for microorganism
During dye, the cleaning agents of membrane main component used is combination more than one or both of alkali, dodecyl sodium sulfate salt etc.；When
Influence film properties pollution factor for inorganic scaling because of the period of the day from 11 p.m. to 1 a.m, the cleaning agents of membrane main component used is oxalic acid, citric acid, hydrochloric acid
With combination more than one or both of bisulfite amine etc..
The object of the invention second is that being achieved through the following technical solutions：A kind of high organic concentration of salinity high rigidity difficult degradation
Waste water treatment system, including along the sequentially connected preconditioned device of organic concentration wastewater treatment process, separation membrane device and high pressure
Reverse osmosis unit, the separation membrane device include at least level-one separation membrane element, and separation membrane elements at different levels are included along organic concentration
The sequentially connected seperation film high-pressure pump of wastewater treatment process and separating film module combination, the water inlet end of the seperation film high-pressure pump with
Preconditioned device water outlet connects；It is anti-that the high pressure reverse osmosis unit includes at least level-one high pressure reverse osmosis units, high pressures at different levels
Permeation unit is included along the sequentially connected high pressure reverse osmosis high-pressure pump of organic concentration wastewater treatment process and high pressure reverse osmosis membrane group
Part combines, the water outlet connection that the high pressure reverse osmosis high-pressure pump water inlet end is combined with separating film module.Organic concentration waste water exists
Addition conditioning medicament is nursed one's health water quality and is stood in preconditioned device, does not dissolve in the calcium in waste water, magnesium and silicon ion reaction generation
The substance and precipitation of water, afterwards organic concentration waste water sequentially enter separation membrane device and high pressure reverse osmosis unit carry out UF membrane and
High pressure reverse-osmosis treated, so as to qualified discharge or reuse.
The separating film module combination includes n sections of separating film modules, and n >=1 is cycled per being equipped between two-phase seperation membrane module
Pump, by increasing surface cross-flow velocity, to reduce film and block risk by dirt.The separating film module optionally separates point
Son amount is organic matter more than 500 dalton.
The separation membrane device, which further includes, is arranged on being sequentially connected between preconditioned device and first order separation membrane element
Seperation film intake pump and seperation film accurate filter, seperation film intake pump water inlet end be connected with the water outlet of preconditioned device,
And the water outlet of seperation film accurate filter is connected with first order separation membrane element water inlet end, from the organic dense of preconditioned device
Contracting waste water sequentially enters separation membrane elements at different levels and is handled again after first passing through the filtering of seperation film accurate filter.
The separation membrane element at different levels further includes the organic liquid waste for the water outlet connection that influent side is combined with separating film module
Tank, for storing the concentrate generated after UF membrane.
The separation membrane element at different levels further includes seperation film cleaning device, for when separating film module processing capacity declines
Cleaning recovery is carried out, including sequentially connected cleaning agent storage tank, flushing water pump and cleaning agent filter, cleaning agent filter
Water outlet is connected with separating film module water inlet end.
The high pressure reverse osmosis membrane assembly combination is made of n sections of high pressure reverse osmosis membrane assemblies, n >=1.High pressure reverse osmosis membrane group
Part uses network pipe type and superposed pipe membrane module.
The high pressure reverse osmosis unit, which further includes, to be arranged between separation membrane device and first order high pressure reverse osmosis units
Sequentially connected booster and the reverse osmosis accurate filter of high pressure, the water inlet end of booster are connected with separation membrane device water outlet,
The water outlet of the reverse osmosis accurate filter of high pressure is connected with first order high pressure reverse osmosis units water inlet end, from separation membrane device
Waste water first passes through booster boosting, is filtered subsequently into the reverse osmosis accurate filter of high pressure, then sequentially enters high pressure reverse osmosis at different levels
Saturating unit is handled.
The high pressure reverse osmosis units at different levels further include the water outlet connection that influent side is combined with high pressure reverse osmosis membrane assembly
Concentration liquid storage tank, for store high pressure it is reverse osmosis after generate concentrate.
The high pressure reverse osmosis units at different levels further include the reverse osmosis cleaning device of high pressure, in high pressure reverse osmosis membrane assembly
Processing capacity carries out cleaning recovery when declining, including sequentially connected cleaning agent storage tank, flushing water pump and cleaning agent filter,
The water outlet of cleaning agent filter is connected with high pressure reverse osmosis membrane assembly water inlet end.
The preconditioned device includes at least a set of conditioning medicine feeding apparatus, pretreatment pool and reaction settling basin, conditioning
Medicine feeding apparatus and pretreatment pool, pretreatment pool are connected with reaction settling basin, and at least one set of blender is equipped in pretreatment pool.
Present invention additionally comprises the raw water tank being connected with Sewage outlet, the raw water tank water outlet through raw water intake pump with it is presetting
Manage device connection.
Present invention additionally comprises and the water tank that is arranged between separation membrane device and high pressure reverse osmosis unit, for keeping in
Waste water from separation membrane device.
The present invention has the following advantages：
1. method and system leading portion provided by the invention by preconditioned remove foulings such as calcium, magnesium and silicon in permeate from
Son effectively protects the stability of total system operation；Stage casing is dense to high salinity, high rigidity, difficult degradation organic film using UF membrane
Organic matter in contracting waste water is separated, and the organic liquid waste after concentration can be down to less than the 5% of stoste；Latter end uses high pressure reverse osmosis
Row advanced treating is penetrated into, since larger molecular organics and scale-forming ion have removed in preconditioned and UF membrane, can substantially be carried
The rate of recovery of high pressure reverse osmosis units, high pressure reverse osmosis water outlet can directly qualified discharge or reuses.
2. method provided by the invention removes calcium, magnesium and silicon plasma, reduces organic thickened waste in preconditioned processing
The hardness of water avoids separating film module and high pressure reverse osmosis membrane assembly in follow-up UF membrane and high pressure reverse-osmosis treated from being blocked,
Follow-up fouling membrane is effectively controlled, improves the separating effect of organic matter, reduces the operation and maintenance cost of subsequent technique, ensures subsequent film
The stable operation of system, the more conventional treatment process of total system operating cost are greatly lowered, and 1 ton of cost of water treatment is can be controlled in
Less than 18 yuan, and the stability of system and longtime running feasibility are higher.
3. the present invention first carries out organic concentration waste water preconditioned, effectively control fouling membrane and improve the separation effect of organic matter
Fruit makes the organic liquid waste after membrane separation concentration be down to less than the 5%, even up to less than 2% of original machine concentration waste water, producing water ratio
Up to more than 98%, the organic concentration in permeate reduces by more than 70%, while ensures the stable operation of follow-up membranous system.
4. the present invention after preconditioned and membrane separation due to waste water in influence membranous system stable operation factor it is basic
It has all removed, for the reverse osmosis producing water ratio of high pressure up to 80%~85%, water outlet can qualified discharge or reuse.
5. the present invention is when separating film module and high pressure reverse osmosis membrane assembly processing capacity decline, to separating film module and height
Pressure reverse osmosis membrane assembly carries out cleaning recovery, to ensure the stability of the processing capacity of system and operation.
6. the separating film module that the present invention selects optionally separates molecular weight as organic matters more than 500 dalton,
The organic pollution of organic concentration waste water is separated, reduces follow-up high pressure reverse osmosis membrane assembly fouling risk.
7. the present invention concentrates waste water, such as the treatment effect of nanofiltration concentrate, landfill leachate concentration liquid for organic film
Highly significant.
Description of the drawings
Fig. 1 is the processing system schematic diagram of the present invention；
1. raw water tank, 2. raw water pumps, 3. reaction settling basins, 4. seperation film intake pumps, 5. seperation film accurate filters, 6. points
From film high-pressure pump, the combination of 7. separating film modules, 8. water tanks, 9. boosters, the reverse osmosis accurate filter of 10. high pressures, 11. high pressures
Reverse osmosis high-pressure pumps, the combination of 12. high pressure reverse osmosis membrane assemblies, 13~15. conditioning medicine feeding apparatus, 16. cleaning agent storage tanks,
17. flushing water pump, 18. cleaning agent filters, 19. organic waste flow containers, 20. cleaning agent storage tanks, 21. flushing water pumps, 22. cleaning agents
Filter, 23. concentration liquid storage tanks, 31. pretreatment pools, 32. blenders.
Fig. 2 is the process flow chart of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail technical scheme, but does not form
Any limitation of the invention.As described below is only present pre-ferred embodiments, all institutes in spirit of the invention and spirit
Any modification equivalent substitution made, should all be included in the protection scope of the present invention.
Embodiment 1
The organic concentration waste water treatment system of high salinity high rigidity difficult degradation as shown in Figure 1 is one embodiment of the invention,
By raw water tank 1, raw water intake pump 2, preconditioned device, separation membrane device, water tank 8 and high pressure reverse osmosis unit along organic concentration
Wastewater treatment process is sequentially connected composition.
Preconditioned device includes three sets of conditioning medicine feeding apparatus 13,14,15, pretreatment pool 31 and reaction settling basin 3, in advance
Processing pond 31 is connected with reaction settling basin 3, and three groups of blenders 32 are equipped in pretreatment pool 31.Nurse one's health medicine feeding apparatus 13,14,
15 are connected with pretreatment pool 31.In wastewater treatment process, the conditioning waste water into pond of medicine feeding apparatus 13,14,15 adds tune
Manage medicament, while three groups of blenders 32 start by waste water with conditioning medicament be uniformly mixed, after pretreatment waste water enter reaction precipitate
Precipitation is reacted in pond 3.
Separation membrane device includes seperation film intake pump 4, seperation film accurate filter 5, single-stage separation membrane element, organic liquid waste
Tank 19 and seperation film cleaning device.Single-stage separation membrane element includes seperation film high-pressure pump 6 and separating film module combination 7.Seperation film
Intake pump 4, seperation film accurate filter 5, seperation film high-pressure pump 6 and separating film module combination 7 are sequentially connected.Wherein, seperation film
4 water inlet end of intake pump is connected with the water outlet of reaction settling basin 3, the water outlet and water storage through side of separating film module combination 7
Tank 8 connects, and the water outlet that separating film module combines 7 influent sides is connected with organic waste flow container 19, from having for preconditioned device
Machine concentration waste water, which is first passed through after seperation film accurate filter 5 filters, to be entered back into separation membrane element and is handled, generation it is organic dense
Contracting waste liquid is left concentratedly in organic waste flow container 19, and the water through UF membrane enters water tank 8 and stores.In the present embodiment, seperation film
The membrane module of organic matter of the component combination 7 by n sections of separation molecular weight more than 500 dalton is formed, n >=1.Every two sections of membrane modules
Between be equipped with circulating pump, can be reduced film by increasing surface cross-flow velocity and risk blocked by dirt in processing procedure.Separation
Membrane cleaning device includes sequentially connected cleaning agent storage tank 16, flushing water pump 17 and cleaning agent filter 18, cleaning agent filter
18 water outlet combines the connection of 7 water inlet ends with separating film module, when separating film module combines 7 processing capacities and declines, toward separation
Membrane module combination 7 is passed through cleaning agent and is cleaned, to recover processing capacity.
High pressure reverse osmosis unit include booster 9, the reverse osmosis accurate filter 10 of high pressure, single-stage high voltage reverse osmosis units,
Concentrate liquid storage tank 23 and the reverse osmosis cleaning device of high pressure.Single-stage high voltage reverse osmosis units include the reverse osmosis height of sequentially connected high pressure
Press pump 11 and high pressure reverse osmosis membrane assembly combination 12.The reverse osmosis accurate filter 10 of booster 9, high pressure, high pressure reverse osmosis high-pressure
Pump 11 and high pressure reverse osmosis membrane assembly combination 12 are sequentially connected, wherein, the water inlet end of booster 9 is connected with 8 water outlet of water tank,
The water outlet that high pressure reverse osmosis membrane assembly combines 12 influent sides is connected with concentration liquid storage tank 23, and the waste water from water tank 8 first passes through
It crosses after booster 9 boosts and is filtered into the reverse osmosis accurate filter 10 of high pressure, enter back into high pressure reverse osmosis units and handled, it is high
The concentrate of pressure reverse osmosis membrane assembly 12 influent sides of combination enters concentration liquid storage tank 23 and stores, high pressure reverse osmosis membrane assembly combination 12
Through side water through water outlet discharge or reuse.In the present embodiment, the combination 12 of high pressure reverse osmosis membrane assembly is by n sections of high pressure reverse osmosis
Permeable membrane component is formed, n >=1.High pressure reverse osmosis membrane assembly uses network pipe type and superposed pipe membrane module.The reverse osmosis cleaning device of high pressure
Including sequentially connected cleaning agent storage tank 20, flushing water pump 21 and cleaning agent filter 22, the water outlet of cleaning agent filter 22
The connection of 12 water inlet ends is combined with high pressure reverse osmosis membrane assembly.It is past when high pressure reverse osmosis membrane assembly combines 12 processing capacities and declines
High pressure reverse osmosis membrane assembly combination 12 is passed through cleaning agent and is cleaned, to recover processing capacity.
In the present embodiment, cleaning agent filter 18 and cleaning agent filter 22 use accurate filter.
Embodiment two
(1) preconditioned：Organic film concentration waste water-nanofiltration concentrate in raw water tank 1 is passed through preconditioned device and carries out water
Matter is adjusted.The property of waste water is concentrated according to organic film, the pH of organic film concentration waste water is adjusted using hydrochloric acid, sodium hydroxide and lime
It is worth for 6.Then addition conditioning medicament stands reaction precipitation, removes calcium, magnesium and the silicon ion in waste water, total hardness is down to original
Less than the 15% of water.Conditioning medicament is made of sodium hydroxide, sodium carbonate and lime, between sodium hydroxide, sodium carbonate and lime
The specific dosage of ratio and conditioning medicament carries out calculating adjustment depending on calcium, magnesium and the silicon plasma concentration in waste water.
(2) UF membrane：Through step (1) treated organic film concentration waste water after the filtering of seperation film accurate filter 5
Into separation membrane element, under the pressure of 6bar filtering separate organic pollution and waste water, producing water ratio is up to more than 98%, and water
In organic matter concentrating and separating be reduced to less than the 30% of stoste, waste water is through separating film module combination 7 into water tanks 18
Storage, to be further processed.
(3) high pressure is reverse osmosis：After boosted 9 boosting of pump of waste water of water tank 18, high pressure reverse osmosis units are entered back into,
Reverse osmosis into horizontal high voltage under 90bar pressure, water outlet meets qualified discharge and reuse standard.
(4) clean：When separating film module combination 7 and high pressure reverse osmosis membrane assembly are combined 12 processing capacities and are declined, for
Pollutant type is selectively using compound cleaning agents of membrane to separating film module combination 7 and high pressure reverse osmosis membrane assembly combination 12
Carry out cleaning recovery.Specifically, when the pollution factor for influencing film properties is microbial contamination, compound cleaning agents of membrane main component
For alkali, dodecyl sodium sulfate salt etc.；When influence film properties pollution factor for inorganic scaling because of the period of the day from 11 p.m. to 1 a.m, compound cleaning agents of membrane master
Ingredient is wanted as oxalic acid, citric acid, hydrochloric acid, bisulfite amine etc..Each group distribution ratio is according to pollutant component in compound cleaning agents of membrane
Concentration carries out calculating adjustment.
(5) the conditioning sludge that preconditioned generates carries out Treatment of Sludge in sewage plant.Organic-condensed wastewater after UF membrane
Disposal is then transported outward with concentrate of the high pressure after reverse osmosis.
Embodiment three
(1) preconditioned：Organic film concentration waste water in raw water tank 1-landfill leachate concentration liquid is passed through preconditioned device
Water quality adjustment is carried out, the property of waste water is concentrated according to organic film, organic film thickened waste is adjusted using hydrochloric acid, sodium hydroxide and lime
The pH value of water is 6.Then addition conditioning medicament stands reaction precipitation, calcium, magnesium and the silicon ion in waste water is removed, by total hardness
It is down to less than the 15% of raw water.Conditioning medicament is made of sodium hydroxide, sodium carbonate, lime and calcium carbonate, sodium hydroxide, sodium carbonate
The specific dosage of ratio and conditioning medicament between lime carries out calculating adjustment depending on the calcium ions and magnesium ions concentration in waste water.
(2) UF membrane：Through step (1) treated organic film concentration waste water after the filtering of seperation film accurate filter 5
Into separation membrane element, being filtered under the pressure of 10bar separates organic pollution and waste water, and waste water penetrates separating film module group
7 are closed, is stored into water tank 18, to be further processed.
(3) high pressure is reverse osmosis：After boosted 9 boosting of pump of waste water of water tank 18, high pressure reverse osmosis units are entered back into,
Reverse osmosis into horizontal high voltage under the pressure of 80bar, water outlet meets qualified discharge and reuse standard.
(4) clean：When separating film module combination 7 and high pressure reverse osmosis membrane assembly are combined 12 processing capacities and are declined, for
Pollutant type is selectively using specific complex cleaning agents of membrane to separating film module combination 7 and high pressure reverse osmosis membrane assembly group
It closes 12 and carries out cleaning recovery.Specifically, when the pollution factor for influencing film properties is microbial contamination, compound cleaning agents of membrane is main
Ingredient is alkali, dodecyl sodium sulfate salt etc.；When influence film properties pollution factor for inorganic scaling because of the period of the day from 11 p.m. to 1 a.m, compound Membrane cleaning
Agent main component is oxalic acid, citric acid, hydrochloric acid, bisulfite amine etc..Each group distribution ratio is according to pollutant in compound cleaning agents of membrane
Constituent concentration carries out calculating adjustment.
(5) the conditioning sludge that preconditioned generates carries out Treatment of Sludge in sewage plant.Organic-condensed wastewater after UF membrane
Disposal is then transported outward with concentrate of the high pressure after reverse osmosis.
Example IV
(1) preconditioned：Organic concentration waste water in raw water tank 1 is passed through preconditioned device and carries out water quality adjustment, according to having
Machine concentrates the property of waste water, and hydrochloric acid, sodium hydroxide and lime is used to adjust the pH value of organic concentration waste water as 6.Then addition is adjusted
Medicament is managed, reaction precipitation is stood, removes calcium, magnesium and the silicon ion in waste water, total hardness is down to less than the 15% of raw water.Conditioning
Medicament is made of sodium hydroxide, sodium carbonate, lime and calcium carbonate, ratio and tune between sodium hydroxide, sodium carbonate and lime
The specific dosage of reason medicament carries out calculating adjustment depending on the calcium ions and magnesium ions concentration in waste water.
(2) UF membrane：It is filtered through step (1) treated organic concentration waste water by seperation film accurate filter 5 laggard
Enter separation membrane element, being filtered under the pressure of 15bar separates organic pollution and waste water, and waste water is combined through separating film module
7, it is stored into water tank 18, to be further processed.
(3) high pressure is reverse osmosis：After boosted 9 boosting of pump of waste water of water tank 18, high pressure reverse osmosis units are entered back into,
Reverse osmosis into horizontal high voltage under 60bar pressure, water outlet meets qualified discharge and reuse standard.
(4) clean：When separating film module combination 7 and high pressure reverse osmosis membrane assembly are combined 12 processing capacities and are declined, for
Pollutant type is selectively using specific complex cleaning agents of membrane to separating film module combination 7 and high pressure reverse osmosis membrane assembly group
It closes 12 and carries out cleaning recovery.When the pollution factor for influencing film properties is microbial contamination, compound cleaning agents of membrane main component is
Alkali, dodecyl sodium sulfate salt etc.；When the pollution factor for influencing film properties is inorganic scaling because of the period of the day from 11 p.m. to 1 a.m, compound cleaning agents of membrane is main
Ingredient is oxalic acid, citric acid, hydrochloric acid, bisulfite amine etc..Each group distribution ratio is dense according to pollutant component in compound cleaning agents of membrane
Degree carries out calculating adjustment.
(5) the conditioning sludge that preconditioned generates carries out Treatment of Sludge in sewage plant.Organic-condensed wastewater after UF membrane
Disposal is then transported outward with concentrate of the high pressure after reverse osmosis.
Claims (15)
1. a kind of organic concentration wastewater treatment method of high salinity high rigidity difficult degradation, it is characterized in that, comprise the following steps：
(1) preconditioned：Organic concentration waste water is passed through preconditioned device and carries out water quality adjustment, adjusting pH is 6-8, and then addition is adjusted
Medicament is managed, is staticly settled, removes calcium, magnesium and silicon ion in waste water；
(2) UF membrane：Through step (1), treated that organic concentration waste water enters that separation membrane device carries out membrane separation, in 6-
It is filtered under the pressure of 15bar, separates organic pollution and water；
(3) high pressure is reverse osmosis：The water that membrane separation comes out enters high pressure reverse osmosis unit into horizontal high voltage reverse-osmosis treated, removal
Monovalent salt and contaminant remaining in water, make water outlet qualified discharge and reuse.
2. the organic concentration wastewater treatment method of high salinity high rigidity difficult degradation according to claim 1, it is characterized in that, it is described
In step (1), pH is carried out to organic concentration waste water using combination one or more kinds of in hydrochloric acid, sodium hydroxide and lime
It adjusts；The conditioning medicament is combination more than one or both of sodium hydroxide, sodium carbonate, lime and calcium carbonate；Conditioning
Ratio in medicament between each component and nurse one's health calcium, magnesium and silicon of the specific dosage of medicament in organic concentration waste water from
Sub- concentration carries out calculating adjustment.
3. the organic concentration wastewater treatment method of high salinity high rigidity difficult degradation according to claim 1, it is characterized in that, it is described
In step (2), using the separating film module that can separate organic matter of the molecular weight more than 500 dalton in separation membrane device.
4. the organic concentration wastewater treatment method of high salinity high rigidity difficult degradation according to claim 1, it is characterized in that, it is described
In step (3), the high pressure reverse osmosis membrane assembly of high pressure reverse osmosis unit is using network pipe type and superposed pipe membrane module, pH value tune of intaking
It is whole to 6~8, operating pressure is between 60~90bar.
5. the organic concentration wastewater treatment method of high salinity high rigidity difficult degradation according to claim 1, it is characterized in that, also wrap
It includes and cleaning step is carried out to the separating film module of separation membrane device and the high pressure reverse osmosis membrane assembly of high pressure reverse osmosis unit, dividing
When declining from membrane module and high pressure reverse osmosis membrane assembly processing capacity, cleaning recovery is carried out to each membrane module.
6. a kind of organic concentration waste water treatment system of high salinity high rigidity difficult degradation, it is characterized in that, including along organic concentration waste water
The sequentially connected preconditioned device for the treatment of progress, separation membrane device and high pressure reverse osmosis unit, the separation membrane device are included extremely
Few level-one separation membrane element, separation membrane elements at different levels are included along the sequentially connected seperation film high pressure of organic concentration wastewater treatment process
Pump and separating film module combination, the water inlet end of the seperation film high-pressure pump are connected with preconditioned device water outlet；The high pressure is anti-
Permeability apparatus includes at least level-one high pressure reverse osmosis units, high pressure reverse osmosis units at different levels include along organic concentration wastewater treatment into
The sequentially connected high pressure reverse osmosis high-pressure pump of journey and the combination of high pressure reverse osmosis membrane assembly, the water outlet of the separating film module combination
It is connected with high pressure reverse osmosis high-pressure pump water inlet end.
7. the organic concentration waste water treatment system of high salinity high rigidity difficult degradation according to claim 6, it is characterized in that, it is described
Separating film module, which combines, includes n sections of separating film modules, n >=1, and circulating pump is equipped between every two-phase seperation membrane module；The high pressure
Reverse osmosis membrane assembly combination is made of n sections of high pressure reverse osmosis membrane assemblies, and n >=1, the high pressure reverse osmosis membrane assembly uses network pipe type
And superposed pipe membrane module.
8. the organic concentration waste water treatment system of high salinity high rigidity difficult degradation according to claim 6 or 7, it is characterized in that,
The separation membrane device further includes the sequentially connected seperation film being arranged between preconditioned device and first order separation membrane element
Intake pump and seperation film accurate filter, seperation film intake pump water inlet end is connected with the water outlet of preconditioned device, and seperation film
The water outlet of accurate filter is connected with first order separation membrane element water inlet end, and organic concentration waste water from preconditioned device is first
Separation membrane elements at different levels are sequentially entered again after the filtering of seperation film accurate filter to be handled.
9. the organic concentration waste water treatment system of high salinity high rigidity difficult degradation according to claim 8, it is characterized in that, it is described
Separation membrane elements at different levels further include the organic waste flow container for the water outlet connection that influent side is combined with separating film module, for storing film
The organic-condensed wastewater generated after separation.
10. the organic concentration waste water treatment system of high salinity high rigidity difficult degradation according to claim 8, it is characterized in that, institute
It states separation membrane elements at different levels and further includes seperation film cleaning device, it is extensive for when separating film module processing capacity declines clean
Multiple, including sequentially connected cleaning agent storage tank, flushing water pump and cleaning agent filter, the water outlet of cleaning agent filter is with dividing
It is connected from membrane module water inlet end.
11. the organic concentration waste water treatment system of high salinity high rigidity difficult degradation according to claim 6 or 7, it is characterized in that,
The high pressure reverse osmosis unit, which further includes, is arranged on being sequentially connected between separation membrane device and first order high pressure reverse osmosis units
Booster and the reverse osmosis accurate filter of high pressure, the water inlet end of booster be connected with separation membrane device water outlet, high pressure reverse osmosis
The water outlet of saturating accurate filter is connected with first order high pressure reverse osmosis units water inlet end, and the waste water from separation membrane device first passes through
Cross booster boosting, filtered subsequently into the reverse osmosis accurate filter of high pressure, then sequentially enter high pressure reverse osmosis units at different levels into
Row processing.
12. the organic concentration waste water treatment system of high salinity high rigidity difficult degradation according to claim 11, it is characterized in that, institute
State the concentrate storage that high pressure reverse osmosis units at different levels further include the water outlet connection that influent side is combined with high pressure reverse osmosis membrane assembly
Tank, for storing the reverse osmosis rear concentrate generated of high pressure.
13. the organic concentration waste water treatment system of high salinity high rigidity difficult degradation according to claim 11, it is characterized in that, institute
It states high pressure reverse osmosis units at different levels and further includes the reverse osmosis cleaning device of high pressure, under high pressure reverse osmosis membrane assembly processing capacity
Cleaning recovery is carried out during drop, including sequentially connected cleaning agent storage tank, flushing water pump and cleaning agent filter, cleaning agent filtering
Water inlet end connection is combined with high pressure reverse osmosis membrane assembly in the water outlet of device.
14. the organic concentration waste water treatment system of high salinity high rigidity difficult degradation according to claim 6, it is characterized in that, institute
Stating preconditioned device includes at least a set of conditioning medicine feeding apparatus, pretreatment pool and reaction settling basin, conditioning medicament supply dress
It puts and pretreatment pool, pretreatment pool is connected with reaction settling basin, at least one set of blender is equipped in pretreatment pool.
15. the organic concentration waste water treatment system of high salinity high rigidity difficult degradation according to claim 6, it is characterized in that, also
Including the raw water tank being connected with Sewage outlet and the water tank being arranged between separation membrane device and high pressure reverse osmosis unit,
The raw water tank water outlet is connected through raw water intake pump with preconditioned device.
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