CN107585970A - The technique of hardly degraded organic substance advanced treating in a kind of Industrial reverse osmosis concentrated water - Google Patents
The technique of hardly degraded organic substance advanced treating in a kind of Industrial reverse osmosis concentrated water Download PDFInfo
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- CN107585970A CN107585970A CN201711030258.6A CN201711030258A CN107585970A CN 107585970 A CN107585970 A CN 107585970A CN 201711030258 A CN201711030258 A CN 201711030258A CN 107585970 A CN107585970 A CN 107585970A
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Abstract
The invention belongs to field of waste water treatment, there is provided a kind of to be directed to the technique that hardly degraded organic substance is handled in Industrial reverse osmosis concentrated water.Its process unit includes tank, membrane pump, pH regulating reservoirs, dosing pond, photocatalytic oxidation device, swash plate filtering settling tank, neutralization pond, microbial activity charcoal adsorbent equipment, the sterilization pool being sequentially connected.Apparatus of the present invention are simple in construction, reasonable in design, and the reverse osmosis concentrated water water outlet that the process system through the present invention is handled can realize the qualified discharge of Industrial reverse osmosis waste water or further advanced treating, mitigate the load to municipal sewage plant and the harm to environment.
Description
Technical field
The invention belongs to field of waste water treatment, and in particular to a kind of to hardly degraded organic substance advanced treating in reverse osmosis concentrated water
Technique.
Background technology
Because reverse osmosis membrane has stable retention to the various inorganic ions in water, colloidal substance and macromolecular solute etc.
Ability, reverse osmosis technology have been widely used in the purified treatment of industry and domestic water as a kind of standard water technology.
But using reverse osmosis technology in the preparation process of high-concentration organic industrial waste water secondary biochemical effluent recycled water, can produce containing
High concentration salinity, the concentrated water of persistent organic pollutants.May be to soil, surface water, sea if reverse osmosis concentrated water directly discharges
The generations such as ocean are polluted；If being discharged into sewage disposal system, hardly degraded organic substance therein not only increases the organic of sewage disposal system
Load, increase sewage disposal expense, and growth of the too high total dissolved solid to activated sludge is also very unfavorable, influences dirt
The qualified discharge of water treatment plant, it is therefore desirable to select suitable concentrated water treatment method technique.
Currently, mainly include for the processing method of reverse osmosis concentrated water：Advanced oxidation processes, absorption method and membrane distillation method etc..
Wherein, advanced oxidation processes are based on photochemical catalytic oxidation, ozone oxidation and electrocatalytic oxidation.Sewage is handled using high-level oxidation technology
Mechanism be that the extremely strong free radicals (such as OH) of a large amount of activity are produced by physical and chemical processes such as various light, sound, electricity, magnetic, enter
And oxidation Decomposition organic substance.Advanced oxidation is that processing toxicity is big, concentration is high, the effective ways of difficult for biological degradation organic wastewater,
It can be by organic pollution exhaustive oxidation into CO2And H2End product harmless O etc., even partial oxidation, it can also improve
The biodegradability of hardly possible drop organic matter.Although the advanced oxidization methods such as Electro Sorb, Fenton process, electro-catalysis, catalytic ozonation are to having
Organic pollutants have obvious conversion removal effect, if but individually using a kind of method processing reverse osmosis concentrated water when, exist more
Water unstable, water quality are difficult to the features such as up to standard, handling process process is unmanageable.Therefore, if several method is carried out into reasonable group
Close, develop a kind for the treatment of effeciency height, the reverse osmosis thick water treatment method of stable effluent quality is very necessary.
Processing for industrial wastewater, most widely used method are activated sludge processes.It is to utilize activated sludge to carry
Body, a kind of bioremediation of flco processing waste water is formed with the microorganism of suspension growth.Soluble organic dirt in waste water
Dye thing can be adsorbed by activated sludge, and be decomposed by micropopulation, so as to realize the degraded of target contaminant in sewage.But
The various techniques of activated sludge process in the process of running, are the activity and coherency for maintaining activated sludge in place of most critical（It is heavy
Shallow lake performance）, and the cohesion performance of activated sludge is easily influenceed by influent quality and external condition, this allows for common activity
Sludge factor easily now extremely unstable in actual motion.And after activated Sludge System runs to the regular hour, sludge
The adsorption capacity of pollutant can be decreased, the microorganism in sludge as the problem of sludge sludge age and skewness,
And then make it that effluent quality is unstable.
The content of the invention
In view of this, it is anti-for industry the invention provides one kind to realize the processing to Industrial reverse osmosis concentrated water depth
Permeate concentrated water in hardly degraded organic substance handle technique, the technical scheme used for：
A kind of process system for being directed to hardly degraded organic substance advanced treating in reverse osmosis concentrated water, it is characterised in that process unit includes
The tank being sequentially connected（1）, membrane pump（2）, pH regulating reservoirs（3）, dosing pond（6）, photocatalytic oxidation device（8）, swash plate mistake
Filter settling tank（12）, neutralization pond（14）, microbial activity charcoal adsorbent equipment（15）, sterilization pool（18）.
Described pH regulating reservoirs（3）, dosing pond（6）, neutralization pond（14）Inside it is equipped with mechanical stirring device（4）, addition
Medicament passes through peristaltic pump（5）Flow velocity is adjusted according to influent quality to enter in pond.PH controls are 2.5 or so wherein in pH regulating reservoirs,
The too high Fenton reagent generation precipitations that can make in advanced oxidation processes of pH are so that catalysis oxidation can not be carried out.Dosing adds in pond
Medicine is FeSO4·7H2O, pH is adjusted to neutrality in neutralization pond, in favor of subsequent biological treatment.
Described photocatalytic oxidation device（8）Water inlet is provided with H2O2Throwing device（7）, dosage is adjusted according to influent quality,
Hydrogen peroxide is in Fe2+Catalytic action under to produce oxidisability strong（•OH）, the organic matter of difficult degradation in oxidable concentrated water.Light is urged
Change oxidation unit built with ultraviolet irradiation lamp（9）, bottom is provided with two aeration openings, each leads into air（10）With ozone（11）,
The method of interior aeration can realize stirring to mixed liquor, reduce H2O2Reagent consumption and the purpose for improving oxidation effectiveness, ozone pass through
Ozone preparation facilities is prepared, and adjusts ozone flux, ultraviolet and ozone use in conjunction according to influent quality, in ultraviolet
Under irradiation, more strong active group can be produced（•OH）, and other ground-state species and free radical are produced, accelerate chain type
Reaction, oxidation effect, accelerates the degradation rate of organic pollution, reduces the selectivity to organic matter；On the other hand improve
The scope of process object, it can also accelerate the speed of sterilization.Top is provided with steam vent, the pond body phase with filling absorbing liquid
Even, it is mainly used to absorb the ozone of discharge.
Described swash plate filtering settling tank（12）Provided with chemicals dosing plant, medicine is mainly added as alkali, carbonate, H2O2Enzyme, tiltedly
NF membrane is fixed with the top of plate（13）.The purpose of adding alkaline drug be in order to settle the salt such as the higher calcium and magnesium of concentration in concentrated water from
Son, counter-infiltration waste water is obtained a certain degree of softening, while form the medicine that alkaline environment makes to add in Photocatalytic Oxidation
Intermediate product caused by thing and reaction is flocculated.H2O2Enzyme removes remaining H2O2To ensure subsequent technique normal operation.Nanofiltration
Film is used for further retaining reacted salt ion and macromolecular substances.
Described microbial activity charcoal adsorbent equipment（15）The activated carbon used is granular activated carbon（16）, microbial activity
Charcoal obtains after culture is tamed, to adapt to concentrated water water quality.Further removed using the absorption degradation ability of microbial activity charcoal dense
Hardly degraded organic substance in water, the hardly degraded organic substance in Industrial reverse osmosis concentrated water is set to obtain the biodegradation of depth.Microorganism lives
Property charcoal adsorbent equipment bottom is provided with back purge system（17）, periodic flushing is to ensure the continuous service of equipment.Last water outlet is through disappearing
Malicious pond（18）Can qualified discharge or further processing after sterilization.
Described microbial activity charcoal culture domestication comprises the following steps：
1）Granular activated carbon is pre-processed：HCl pickling, 2 h are soaked in 5% HCl, then use ultrapure water；Water
Wash, boil 2 h with ultra-pure water, then use ultrapure water；Cleaned activated carbon is placed in 105 DEG C of baking ovens by drying, is dried
2）The biofilm of microbial activity charcoal：Take Sewage Disposal activated sludge to be mixed with nutritive salt, the activated carbon handled well is put
In a subtle way in biological activated carbon adsorbent equipment, and by activated sludge and nutritive salt circulation access equipment, regularly replace new mixing
Liquid, and be reversely passed through, microorganism well-grown is treated, completes biofilm；
3）Microbial activity charcoal adsorbent equipment is passed through by proportioning is carried out with nutritive salt by the reverse osmosis concentrated water after advanced oxidation
It is interior, gradually increase concentrated water proportion, acclimated microorganism is allowed to adapt to concentrated water water quality, and monitors effluent quality, until effluent quality is steady
Fixed, domestication is completed.
Brief description of the drawings
Fig. 1 is the process unit schematic diagram of invention；
In figure：1st, tank；2nd, membrane pump；3rd, pH regulating reservoirs；4th, mechanical stirring device；5th, peristaltic pump；6th, dosing pond；7、H2O2
Throwing device；8th, photocatalytic oxidation device；9th, ultraviolet irradiation lamp；10th, air aeration device；11st, ozone preparation facilities；12nd, tiltedly
Plate filters settling tank；13rd, NF membrane；14th, neutralization pond；15th, microbial activity charcoal adsorbent equipment；16th, granular activated carbon；17th, it is anti-
Flusher；18th, sterilization pool.
Specific embodiment
This technique is to COD COD value between 150-800 mg/L, and ammonia-nitrogen content is in 0-50 mg/L, total dissolving
Industrial reverse osmosis concentrated water treatment effects of the property solid TDS in 1000-5000 mg/L is obvious.
As shown in figure 1, counter-infiltration water sample is first by tank（1）Pass through membrane pump（2）Into pH regulating reservoirs（3）, make pH
For value stabilization 2.5 or so, the concentrated water regulated flows to dosing pond（6）, flow velocity is adjusted by peristaltic pump and added into concentrated water
FeSO4·7H2O, dosage are 200 mg/L.The concentrated water to stir flows to Treatment by Photocatalysis Oxidation device（8）, in porch
Add and add H2O2, dosage is 413 mg/L.By adjusting ozone intake and ultraviolet illumination wavelength come the effect of intensified response
Fruit, the optimal intake of ozone is 17 mg/L, and illumination wavelength is 254 nm, and average shot area is in 464 cm2。
Photocatalytic Oxidation is two hours, the reverse osmosis concentrated current direction filtering settling tank after photochemical catalytic oxidation（12）,
And add alkaline drug（NaOH and Na2CO3）And H2O2Enzyme, adjust concentrated water pH to 10 or so.Concentrated water flow direction after reaction
Neutralize regulating reservoir（14）, pH is maintained between 6-8.
Concentrated water after neutralization goes out current direction microbial activity charcoal adsorbent equipment（15）, the microbial activity charcoal adsorption tower
Key is that the preparation to humus microbial activity charcoal is tamed with the adaptation to concentrated water water quality.It is prepared with domestication process：
1）Absorption degradation process first has to pre-process activated carbon to remove in activated carbon existing ash content to strengthen activity
The adsorption capacity of charcoal；
2）The biofilm of microbial activity charcoal：Take Sewage Disposal activated sludge to be mixed with nutritive salt, the activated carbon handled well is put
In a subtle way in biological activated carbon adsorbent equipment, and by activated sludge and nutritive salt circulation access equipment, regularly replace new mixing
Liquid, and be reversely passed through, microorganism well-grown is treated, completes biofilm；
3）Microbial activity charcoal adsorbent equipment is passed through by proportioning is carried out with nutritive salt by the reverse osmosis concentrated water after advanced oxidation
It is interior, gradually increase concentrated water proportion, acclimated microorganism is allowed to adapt to concentrated water water quality, and monitors effluent quality, until effluent quality is steady
Fixed, domestication is completed.
The last effluent quality of concentrated water handled through whole process system can realize that COD clearance is more than 70%, ammonia nitrogen
The clearance that clearance is more than 75%, TDS is more than 60%, and carry out disinfection processing to last water outlet, after sterilized sterilization
Water outlet can realize the qualified discharge of Industrial reverse osmosis waste water or further advanced treating, mitigate the load to municipal sewage plant
With the harm to environment.
Claims (6)
1. it is a kind of be directed to reverse osmosis concentrated water in hardly degraded organic substance advanced treating technique, it is characterised in that process unit include according to
The tank of secondary connection（1）, membrane pump（2）, pH regulating reservoirs（3）, dosing pond（6）, photocatalytic oxidation device（8）, swash plate filtering
Settling tank（12）, neutralization pond（14）, microbial activity charcoal adsorbent equipment（15）, sterilization pool（18）.
2. the pH regulating reservoirs according to claims 1（3）, dosing pond（6）, neutralization pond（14）Inside it is equipped with mechanical agitation dress
Put（4）, the medicament of addition passes through peristaltic pump（5）Flow velocity is adjusted according to influent quality to enter in pond, pH is controlled wherein in pH regulating reservoirs
It is FeSO that system adds medicine in 2.5 or so, dosing pond4·7H2O, pH is adjusted to neutrality in neutralization pond.
3. according to the photocatalytic oxidation device described in claims 1（8）Water inlet is provided with H2O2Throwing device（7）, according to water inlet
Water quality adjustment dosage, photocatalytic oxidation device is built with ultraviolet irradiation lamp（9）, bottom is provided with two aeration openings, each leads into sky
Gas（10）With ozone（11）, ozone is prepared by ozone preparation facilities, and adjusts ozone flux, top according to influent quality
Provided with steam vent.
4. the swash plate filtering settling tank according to claims 1（12）Provided with chemicals dosing plant, medicine is mainly added as alkali, carbon
Hydrochlorate, H2O2Enzyme, swash plate top are fixed with NF membrane（13）.
5. the microbial activity charcoal adsorbent equipment according to claims 1（15）Activated carbon used is granular activated carbon
（16）, microbial activity charcoal is prepared after domestication, and to adapt to concentrated water water quality, microbial activity charcoal adsorbent equipment bottom is provided with
Back purge system（17）, the last sterilized pond of water outlet（18）Can qualified discharge or further processing after sterilization.
6. the microbial activity charcoal domestication preparation according to claims 5 comprises the following steps：
1）Granular activated carbon is pre-processed；
2）The biofilm of microbial activity charcoal：Take Sewage Disposal activated sludge to be mixed with nutritive salt, the activated carbon handled well is put
In a subtle way in biological activated carbon adsorbent equipment, and by activated sludge and nutritive salt circulation access equipment, regularly replace new mixing
Liquid, and be reversely passed through, microorganism well-grown is treated, completes biofilm；
3）It is passed through proportioning is carried out with nutritive salt by the reverse osmosis concentrated water after advanced oxidation in microbial activity charcoal tower, by
Cumulative enriched water proportion, acclimated microorganism is allowed to adapt to concentrated water water quality, and monitors effluent quality, until stable effluent quality, is tamed and dociled
Change and complete.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108911304A (en) * | 2018-07-18 | 2018-11-30 | 山东理工大学 | A kind of reverse osmosis concentrated water nanofiltration desalination technique effectively eliminating fouling membrane |
| CN109607899A (en) * | 2018-12-19 | 2019-04-12 | 武汉格林环保设施运营有限责任公司 | A kind of green biochemical processing method for reverse osmosis concentrated water |
| CN111348791A (en) * | 2018-12-20 | 2020-06-30 | 苏州苏讯环保科技有限公司 | Advanced treatment device and treatment method for high-concentration ammonia nitrogen wastewater |
| CN111908609A (en) * | 2020-07-09 | 2020-11-10 | 北京工业大学 | Anaerobic denitrification device is reinforceed to short distance nitration coupling reduction state humus |
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| CN106430582A (en) * | 2016-10-18 | 2017-02-22 | 宜兴市产品质量监督检验所 | Oblique plate type membrane-biological integrated wastewater treatment device and treatment method thereof |
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| CN2632080Y (en) * | 2002-07-05 | 2004-08-11 | 丁忠浩 | Electrocoagulation integrated portable living water apparatus |
| CN102633410A (en) * | 2012-04-28 | 2012-08-15 | 山东理工大学 | Process for recycling and processing hyperhaline reverse osmosis concentrated water |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911304A (en) * | 2018-07-18 | 2018-11-30 | 山东理工大学 | A kind of reverse osmosis concentrated water nanofiltration desalination technique effectively eliminating fouling membrane |
| CN109607899A (en) * | 2018-12-19 | 2019-04-12 | 武汉格林环保设施运营有限责任公司 | A kind of green biochemical processing method for reverse osmosis concentrated water |
| CN109607899B (en) * | 2018-12-19 | 2021-10-15 | 扬州市博喧环保科技有限公司 | Green biochemical treatment method for reverse osmosis concentrated water |
| CN111348791A (en) * | 2018-12-20 | 2020-06-30 | 苏州苏讯环保科技有限公司 | Advanced treatment device and treatment method for high-concentration ammonia nitrogen wastewater |
| CN111908609A (en) * | 2020-07-09 | 2020-11-10 | 北京工业大学 | Anaerobic denitrification device is reinforceed to short distance nitration coupling reduction state humus |
| CN111908609B (en) * | 2020-07-09 | 2021-12-10 | 北京工业大学 | Anaerobic denitrification device is reinforceed to short distance nitration coupling reduction state humus |
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Application publication date: 20180116 |