CN105858984A - Device and method for treating vessel oily sewage by ultrasonic strengthening membrane with combination of photo-electrocatalytic technology - Google Patents

Device and method for treating vessel oily sewage by ultrasonic strengthening membrane with combination of photo-electrocatalytic technology Download PDF

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Publication number
CN105858984A
CN105858984A CN201610356540.2A CN201610356540A CN105858984A CN 105858984 A CN105858984 A CN 105858984A CN 201610356540 A CN201610356540 A CN 201610356540A CN 105858984 A CN105858984 A CN 105858984A
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China
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photoelectrocatalysioxidization oxidization
ultrasonic
membrane
negative electrode
oil
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Inventor
朱丽楠
刘琪
陈秋
王鹤璇
施悦
禾海伶
孙勇
刘桂芳
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Harbin Engineering University
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Harbin Engineering University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/34Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/727Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/008Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection

Abstract

The invention aims to provide a device and a method for treating vessel oily sewage by an ultrasonic strengthening membrane with the combination of the photo-electrocatalytic technology. The vessel oily sewage passes by a grid by a collection pipeline, enters an ultrasonic demulsification device and then enters a membrane filtration device, the membrane filtration device comprises an oil wiper and a modified membrane, and the vessel oily sewage enters a photoelectric catalysis and oxidation device and is exhausted and recycled when it is tested by a detector that all indexes meet the requirements. The device and the method for treating the vessel oily sewage by the ultrasonic strengthening membrane with the combination of the photo-electrocatalytic technology have the advantages that the structure is simple and compact, the occupied area is small, and the use and operation management is convenient, at the same time, recycling of oil and sewage after treatment is realized, and the purposes of energy conservation and emission reduction are realized.

Description

Ultrasound-enhanced film combines photo-electrocatalytic technology and processes the device and method of vessel oily water
Technical field
The present invention relates to a kind of sewage-treatment plant and method thereof, specifically ship sewage treatment dress Put and method.
Background technology
Ship sewage treatment is an important content in vessel pollution control field, oil-containing in vessel oily water Polytype oil, its source includes: lubricating oil, steam cylinder oil and hydraulic oil, cleaning agent, foaming agent (AFFF), Paint and solvent etc..In vessel oily water a part oil in water in emulsified state, it is difficult to separate.If These vessel oily waters do not do and effectively process and directly discharge, and can cause the pollution of ocean and river environment. The decomposition of oils can produce the noxious substance such as benzopyrene and other polycyclic aromatic hydrocarbon, the on the one hand meeting of these catabolites Be there is direct toxic action in biology;On the other hand, when the water containing micro oil is used for cultivating or irrigating, quilt Bio-absorbable and be enriched with, by food chain enter human body, be detrimental to health.IMO data shows, the world Cabin bilge oil-polluted water amount discharged every year by average single ship is the 1/10 of this ship gross tonnage, it has been found that illegal row The oil content of the cabin biloge water gone out is up to 50000ppm.There is up to ten million ton oils the most every year by each Kind of approach enters water body, and oil can form monolayer oil film and cover the water surface, makes water body and air exclusion and anoxia, Produce stench, affect aquatile growth even dead.Within 2004, IMO makes rule in MEPC107. (49) Fixed, instead of old MEPC60. (33) pact, add in new execution standard containing oil emulsion " C " The test requirements document of liquid, therefore the effective technology processing vessel oily water of exploitation is significant.
The processing method of the vessel sewage of research, mainly has Physical, physical-chemical process, life the most at present Thing chemical method, electrochemical process, chemical demulsification method and advanced oxidation processes.Various methods have certain applicable bar Part and pluses and minuses.Bioanalysis, owing to being limited by the cultivation of microorganism and growth conditions, is transported at actual boats and ships Row operating process can produce various problems.Therefore, for having the biology of preferable treatment effect containing sewage Processing method should not use.Use membrane technology oil-polluted water to be processed, in external boats and ships the most Application, and studies in China and application are the most less.It addition, for ship sewage treatment effect that reuse can be reached Really, the rarest research of domestic and international this respect.In order to process for biloge water in time on boats and ships, If biloge water can reach the water quality requirement of reuse after certain process, it is achieved " zero-emission simultaneously Put ", so can not only save the volume of sewage storage cabinet in boats and ships, reduce consumption of raw materials, also achieve Being continuing with after the recycling of oils resource and sewage disposal, the reuse of sewage can be substantially reduced supply Demand, reaches the purpose of energy-saving and emission-reduction.
Oil and water can form emulsion under certain condition, and this emulsion in most cases presents oil-in-water (O/W) or the form of Water-In-Oil (W/O), there is relative stability under certain condition.Ultrasonic dehydration Have low cost, effective, do not produce the outstanding advantages such as secondary pollution.Ultrasonic emulsion breaking utilizes ul-trasonic irradiation The displacement effect produced in the fluid media (medium) that character is different realizes oil-water separation.Owing to ultrasound wave is at You Heshui In be respectively provided with good conductivity, so ultrasonic dehydration is applicable to various types of emulsion.Ultrasound wave Breakdown of emulsion can reduce the temperature of breakdown of emulsion, the most just thus can reduce heating set with breakdown of emulsion Standby and energy consumption, can also cancel the high-tension electricity dehydration equipment of complexity simultaneously.Ultrasound wave and demulsifier have good Synergism, it can improve the functioning efficiency of demulsifier, reduce the consumption of demulsifier.Ultrasound wave and chemistry Demulsifier combines has good development prospect for emulsification crude oil demulsification dehydration, particularly to those with conventional Dewatering type is difficult to the crude oil emulsion breaking emulsion and dewatering proved effective.
Kynoar PVDF ultrafiltration membrane is the macromolecular material of a kind of function admirable, steady with the chemistry that it is good Qualitative, radiation resistance and thermostability, mechanical strength are big, high tenacity, antiacid caustic corrosion, preparation technology are simple, The plurality of advantages such as cost is relatively low, apply widely in fields such as waste water process and reuses.But due to tool itself Have strong-hydrophobicity, surface energy is low, wettability is poor, particularly applies in aqueous phase system separation process, is passing Making flux depression due to Adsorption of solute and Pore Blocking during matter, separation process needs bigger driving Power, in separation process, membrane flux and two main Separation Indexes of interception capacity constantly decline, and clean very Difficulty, shortens the service life of film.In order to decelerating membrane pollution, film surface can be carried out hydrophilic modifying, Pollutant are made to be difficult to deposit on the surface of the film and just can make the pollution on film surface under less effect power Thing is removed.Along with the hydrophilic improvement of pvdf membrane, permeability of the membrane, resistance tocrocking and stability are the most available Preferably improving, the overall performance of film is promoted, and has significantly expanded its range of application.Modification for film Being divided into two big classes one is film matrix modification, and including being blended, copolymerization process, another kind is membrane surface modification.
Photoelectro-catalytic oxidation technology is a kind of high-level oxidation technology, has equipment simple, easily controllable, and The advantages such as secondary pollution will not be brought, be described as the water technology of " environmental friendliness ".Photoelectrocatalysioxidization oxidization Technology is the technology of a kind of oil-polluted water of can effectively degrading, and the speed of photoelectrocatalysioxidization oxidization degradation of organic substances is bright The aobvious independent role speed sum higher than photochemical catalytic oxidation with electrocatalysis oxidation reaction, thus light and electric process tool There is significant synergism.TiO2 is one of catalysis material the most of greatest concern, but applies in reality In there is the problem that electron-hole pair recombination rate is high.TiO2 nanotube have even structure, high-sequential, Specific surface area is big, stable chemical nature and advantage, precious metals pt and SnO2 and TiO2 such as reusable receive Mitron can reduce electron-hole pair recombination rate after mixing, improves photocatalysis efficiency.
Summary of the invention
It is an object of the invention to provide and be capable of the ultrasound-enhanced film of reusing sewage purpose and combine photoelectrocatalysis The device and method of technical finesse vessel oily water
The object of the present invention is achieved like this:
The ultrasound-enhanced film of the present invention combines photo-electrocatalytic technology and processes the device of vessel oily water, it is characterized in that: Including grid, ultrasonic emulsion breaking device, membrane-filtering unit, photoelectrocatalysioxidization oxidization device, set in ultrasonic emulsion breaking device Putting ultrasonic probe, drug feeding device is installed at the top of ultrasonic emulsion breaking device, and the bottom of ultrasonic emulsion breaking device is swash plate knot Structure, arranges sewage draining exit below swash plate structure, be respectively provided with modified filter membranes and oil wiper, membrane filtration in membrane-filtering unit Blow-off pipe is set on device, DC source, ultraviolet lamp tube, aerator is set in photoelectrocatalysioxidization oxidization device, DC source includes anode and negative electrode, and negative electrode is arranged on the middle part of photoelectrocatalysioxidization oxidization device, and anode is cylinder Shape to be arranged on the inwall of photoelectrocatalysioxidization oxidization device inboard, ultraviolet lamp tube is arranged in the outside of negative electrode, photoelectricity Drain pipe is set on catalytic oxidizing equipment, is filled with electrolyte in photoelectrocatalysioxidization oxidization device, containing from boats and ships Oily water passes sequentially through grid, ultrasonic emulsion breaking device, oil wiper, modified filter membranes and photoelectrocatalysioxidization oxidization dress Put and discharged by drain pipe.
The ultrasound-enhanced film of the present invention combines the device of photo-electrocatalytic technology process vessel oily water and can also wrap Include:
1, described ultrasonic probe is evenly distributed on the inwall of ultrasonic emulsion breaking device.
2, described modified filter membranes uses PVC Yu PVDF blend hollow fiber membrane, and the surface of blend film is coated with Covering hydroaropic substance, described hydroaropic substance includes modified powdered zeolite, Kaolin, clay, kieselguhr And chitosan.
3, the anode of photoelectrocatalysioxidization oxidization device is the SnO that Pt modifies2/TiO2Nanotube electrode, electrocatalytic oxidation The negative electrode of gasifying device is stainless steel bar or copper rod, light source ultraviolet lamp tube be distributed in the shape of a spiral cathode outer side or by Four straight fluorescent tubes are distributed in around negative electrode;Described electrolyte is NaCl, Na2SO4、NaClO4In one Or several, electrolyte concentration is 0.1-0.5mol/L.
The ultrasound-enhanced film of the present invention combines the method that photo-electrocatalytic technology processes vessel oily water, it is characterized in that: The following device processing vessel oily water of employing:
Including grid, ultrasonic emulsion breaking device, membrane-filtering unit, photoelectrocatalysioxidization oxidization device, ultrasonic emulsion breaking device In ultrasonic probe is set, drug feeding device is installed at the top of ultrasonic emulsion breaking device, and the bottom of ultrasonic emulsion breaking device is oblique Plate structure, arranges sewage draining exit below swash plate structure, be respectively provided with modified filter membranes and oil wiper in membrane-filtering unit, Arrange on membrane-filtering unit and DC source, ultraviolet lamp tube, aeration dress are set in blow-off pipe photoelectrocatalysioxidization oxidization device Putting, DC source includes anode and negative electrode, and negative electrode is arranged on the middle part of photoelectrocatalysioxidization oxidization device, anode in Cylindric and to be arranged on the inwall of photoelectrocatalysioxidization oxidization device inboard, ultraviolet lamp tube is arranged in the outside of negative electrode, Drain pipe is set on photoelectrocatalysioxidization oxidization device, in photoelectrocatalysioxidization oxidization device, is filled with electrolyte;
(1) vessel oily water is entered in ultrasonic emulsion breaking device through grid by collecting, by adding Medicine device adds AP type demulsifier in ultrasonic emulsion breaking device, and demulsifier concentration is 10-1000mg/L, enables super Sonic probe, supersonic frequency 15-30kHz of ultrasonic probe, ultrasonic power 50-500w, sonication treatment time 10-30min, proportion is discharged by sewage draining exit more than the precipitate of water;
(2) oil-polluted water after sonicated enters in the oil wiper of membrane-filtering unit, stands in oil wiper Scraped off the floating greasy dirt in upper strata by oil scraping plate after 10-30min, blow-off pipe discharge greasy dirt;
(3) sewage scraping off upper strata greasy dirt enters photoelectrocatalysioxidization oxidization device, to power supply after modified filter membranes Energising, voltage range is 1-10V, is passed through ozone, oxygen or air in aerator, and dosage is 5-30 Mg/L, ultraviolet lamp tube is energized thus completes photoelectrocatalysioxidization oxidization process, the dirt processed by photoelectrocatalysioxidization oxidization Water detects through verifying attachment, when its index reaches pre-provisioning request, discharges with crossing drain pipe.
The ultrasound-enhanced film of the present invention combines the method for photo-electrocatalytic technology process vessel oily water and can also wrap Include:
1, the anode of photoelectrocatalysioxidization oxidization device is the SnO that Pt modifies2/TiO2Nanotube electrode, Pt modifies SnO2/TiO2The preparation process of nanotube is:
(1) anodizing is used to prepare TiO with titanium plate2Nano-tube array: with platinized platinum as negative electrode, titanium plate For anode, the most gradually applying 0-30V voltage, increase 1V per minute, magnetic stirrer is slow Take out titanium plate after the lower oxidation 30min of stirring, then carry out anodic oxidation and prepare TiO2Nanotube array;
(2) SnO is prepared2/TiO2Nanotube array composite material: prepared by pulse electrodeposition method SnO2/TiO2Nanotube array composite material;
(3) hydrothermal synthesis method is used to prepare the SnO that Pt modifies2/TiO2Nanotube electrode: in hydrothermal reaction kettle Add six hydration platinum acid chloride solutions, formalin and sodium lauryl sulphate, stir, then evacuation, Add the SnO prepared2/TiO2The hydrothermal reaction kettle of nanotube array composite material good seal is placed in Muffle furnace In 180 DEG C reaction 10h, be cooled to room temperature, loads platinum titanium dioxide nanotube electrode is transferred to lead to N2Protection Tube furnace in 250 DEG C annealing 2h.
2, anodizing is used to prepare TiO2Array during nanotube, replaces titanium plate by titanium net or titanium foam.
Present invention have an advantage that vessel oily water through grid laggard enter ultrasonic breaking device, by super Sound wave and demulsifier have good synergism, make oil or fat particles in water be gathered into bigger elaioleucite, are conducive to Improving the separation efficiency of oil water separator, ultrasound wave can also improve the functioning efficiency of demulsifier simultaneously, reduces The consumption of demulsifier, it is not necessary to add other coagulant.Water outlet is filtered by modified filter membranes, it is achieved returning of oil point Receive and utilize, be purified further to realize recycling by the water outlet after membrane filtration.Use PVC and PVDF Blend hollow fiber membrane, at the surface coating modified powdery zeolite of blend film, Kaolin, clay, kieselguhr With hydroaropic substances such as chitosans.Improve the hydrophilic of film, effectively prevent fouling membrane.TiO2 nanotube profit With having that even structure, high-sequential, specific surface area be big, stable chemical nature and the advantage such as reusable, Precious metals pt and SnO2 and TiO2 nanotube can reduce electron-hole pair recombination rate after mixing, improve light Catalytic efficiency.The speed of photoelectrocatalysioxidization oxidization degradation of organic substances is apparently higher than photochemical catalytic oxidation and electrocatalytic oxidation The independent role speed sum of reaction, utilizes the synergism of photocatalysis and electro-catalysis can improve organic Removal efficiency, it is also possible to by being passed through air, oxygen or ozone in photoelectrocatalysioxidization oxidization device, electrolysis During the ozone that produces or the ozone that is passed through in system can decompose generation high active substance hydroxyl free Base, reaches oxidation and the effect of sterilization, finally realizes the purpose of reusing sewage, it is achieved the zero-emission of sewage. This reaction unit not only remove pollutant usefulness height also have simple and compact for structure, floor space is little, use and The convenient advantage of operational management.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of method for separating polluted particles of the present invention;
Fig. 2 is assembly of the invention figure;
Fig. 3 is ultrasonic emulsion breaking device top view;
Fig. 4 be light source be the photoelectrocatalysioxidization oxidization reaction unit top view of spiral ultraviolet lamp tube;
Fig. 5 be light source be the photoelectrocatalysioxidization oxidization reaction unit top view of uviol lamp straight tube.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and the present invention be described in more detail:
In conjunction with Fig. 1-5, the ultrasound-enhanced film of the present invention combines photo-electrocatalytic technology and processes the dress of vessel oily water Put and specifically include that grid 1, ultrasonic emulsion breaking device 2, membrane-filtering unit 10, photoelectrocatalysioxidization oxidization device 13.
The wherein inner ultrasonic probe 3 that arranges of ultrasonic emulsion breaking device 2, ultrasonic probe 3 is many, and is uniformly distributed In the inwall surrounding of ultrasonic emulsion breaking device 2.Drug feeding device 4 is installed at the top of ultrasonic emulsion breaking device 2, passes through Drug feeding device 4 adds demulsifier in ultrasonic emulsion breaking device, and the type of demulsifier can be with AP type, SP type, AE Type or AR type non-ionic demulsifier one of which, concentration is 10-1000mg/L, ultrasonic emulsion breaking device 2 Bottom be swash plate structure 6, sewage draining exit 5 is set below swash plate structure.
Modified filter membranes 11 and oil wiper 8, the row of also setting up on membrane-filtering unit 10 it is respectively provided with in membrane-filtering unit 10 Dirty pipe 9 and back purge system 12.
Photoelectrocatalysioxidization oxidization device 13 is inner arranges DC source, ultraviolet lamp tube 14, aerator 17, direct current Power supply includes anode 15 and negative electrode 16, and negative electrode 16 is arranged on the middle part of photoelectrocatalysioxidization oxidization device 13, sun Pole 15 cylindrically and is arranged near the inwall of photoelectrocatalysioxidization oxidization device 13, and ultraviolet lamp tube 14 is helically Shape is distributed in around negative electrode 16 or is distributed in around negative electrode 16 by four straight fluorescent tubes, photoelectrocatalysioxidization oxidization device Arranging drain pipe 19 on 13, be filled with electrolyte in photoelectrocatalysioxidization oxidization device 13, anode 15 is modified for Pt SnO2/TiO2Nanotube, TiO2Nanotube is passed through anodic oxidation legal system by titanium plate, titanium net or titanium foam , negative electrode 16 is stainless steel bar or copper rod, and electrolyte is NaCl, Na2SO4、NaClO4In one Or it is several.
Oil-polluted water from boats and ships is discharged after the process of this device by main line, and main line connects successively Logical ultrasonic emulsion breaking device 2, membrane-filtering unit 10 and photoelectrocatalysioxidization oxidization device 13.
The method for separating polluted particles following steps of the present invention: collecting collects vessel oily water, through grid 1, Entering in ultrasonic emulsion breaking device 2, add AP type demulsifier in breaking device 2, demulsifier concentration is 10-1000mg/L, supersonic frequency 15-30kHz, ultrasonic power 50-500w, sonication treatment time 10-30min. Ultrasonic emulsion breaking bottom of device is swash plate structure, and proportion precipitates, by blowdown more than the silt of water, rust etc. Mouth 5 is discharged, and the oil-polluted water after ultrasonic emulsion breaking processes enters membrane-filtering unit 10, and membrane-filtering unit 10 includes scraping Oil device 7, modified filter membranes 11, oil-polluted water is scraped off by oil scraping plate after standing 10-30min in oil wiper 7 The floating greasy dirt of layer, is discharged greasy dirt by blow-off pipe 8, blow-off pipe 8 can weigh after being dehydrated further after discharging Multiple utilization, the sewage scraping off upper strata greasy dirt passes through modified filter membranes 11, subsequently into photoelectrocatalysioxidization oxidization device 13, Power supply is DC source, and voltage range is 1-10V, and anode is cylindrically.Electrolyte is Na2SO4, concentration For 0.1-0.5mol/L, being passed through ozone in aerator 17, ozone dosage is 5-30mg/L, when passing through The oil-polluted water device 18 after testing that photoelectrocatalysioxidization oxidization processes detects indices when reaching requirement, by draining Pipe 19 is discharged, reuse.Back purge system 12 periodically carries out backwash to ultrafilter membrane.Light source is ultraviolet lamp tube, It is distributed in closing twist shape outside negative electrode 16 or is distributed in around negative electrode 16 by four straight fluorescent tubes.
Demulsifier used is in addition to AP type demulsifier, it is also possible to be SP type, AE type, AR type nonionic Demulsifier, concentration is 10-1000mg/L.Electrolyte is in addition to Na2SO4, it is also possible to for NaCl, NaClO4, Concentration is 0.1-0.5mol/L.
The SnO that the anode 15 of photoelectrocatalysioxidization oxidization device 13 is modified for Pt2/TiO2Nanotube electrode, photoelectricity Catalysis oxidation depth processes the SnO2/TiO2 electrode using Pt to modify, and the preparation process of this electrode is:
(1) TiO2 nanotube uses anodizing to prepare: with platinized platinum as negative electrode, the titanium plate processed is Anode, the most gradually applies 0-30V voltage, and increase 1V per minute, magnetic stirrer slowly stirs Take out titanium plate after mixing lower oxidation 30min, then carry out anodic oxidation and prepare TiO2 nanotube array.
(2) preparation of SnO2/TiO2 nanotube array composite material: pulse electrodeposition method prepares SnO2/TiO2 Nanotube array composite material.
(3) preparation of the SnO2/TiO2 nanotube that Pt modifies: add six hydration chlorine platinum in hydrothermal reaction kettle Acid solution, formalin and sodium lauryl sulphate, stir, then evacuation, and addition prepares The hydrothermal reaction kettle of SnO2/TiO2 nanotube array composite material good seal is placed in 180 DEG C of reactions in Muffle furnace 10h, is cooled to room temperature, transfers to carrying platinum titanium dioxide nanotube electrode in the tube furnace that logical N2 protects 250 DEG C of annealing 2h.
TiO2 nanotube has that even structure, high-sequential, specific surface area be big, stable chemical nature and can weighing Advantage, precious metals pt and SnO2 and the TiO2 nanotubes such as multiple use can reduce electron-hole pair after mixing Recombination rate, improves photocatalysis efficiency.
Use PVC Yu PVDF blend hollow fiber membrane, it can the performance of two kinds of polymers compositionss of aggregative equilibrium, Effectively expand the range of choice of membrane material, it is thus achieved that the membrane material that combination property is ideal.PVC and PVDF Blend hollow fiber membrane water flux and hot strength are preferable.
The parents such as surface coating modified powdery zeolite, Kaolin, clay, kieselguhr and the chitosan in blend film Aqueous substance.Modified zeolite, Kaolin, kieselguhr are all the hydroaropic substances that surface is electronegative, make film Antifouling property increase.It addition, surface is weak electronegative modified zeolite can be formed loosely organized, The cake layer that hole is bigger, is easily rinsed during backwash, and membrane flux can be recovered very well.Zeolite Modified through acid system, specific surface area increases, and surface elecrtonegativity reduces.Chitosan both can overlay on film surface, Can also enter in fenestra, thus improve the hydrophilic of film, can effectively prevent the protein contamination of film.
The strong adsorptivity of powder activated carbon can also be utilized to have at blend film surface-coated Powdered Activated Carbon Effect removes the organic pollution in water.
In photoelectrocatalysioxidization oxidization device 13, aerator 17 is in addition to being passed through ozone, it is also possible to be passed through air or Oxygen, dosage is 5-30mg/L, the ozone produced in electrolytic process or the ozone being passed through in system Generation high active substance hydroxyl radical free radical can be decomposed.Water outlet after making by membrane filtration is purified further, reaches To oxidation and the effect of sterilization.

Claims (8)

  1. The most ultrasound-enhanced film combines photo-electrocatalytic technology and processes the device of vessel oily water, it is characterized in that: bag Include grid, ultrasonic emulsion breaking device, membrane-filtering unit, photoelectrocatalysioxidization oxidization device, arrange in ultrasonic emulsion breaking device Ultrasonic probe, the top installation drug feeding device of ultrasonic emulsion breaking device, the bottom of ultrasonic emulsion breaking device is swash plate structure, Sewage draining exit is set below swash plate structure, in membrane-filtering unit, is respectively provided with modified filter membranes and oil wiper, membrane-filtering unit On blow-off pipe is set, DC source, ultraviolet lamp tube, aerator are set in photoelectrocatalysioxidization oxidization device, directly Stream power supply includes anode and negative electrode, and negative electrode is arranged on the middle part of photoelectrocatalysioxidization oxidization device, and anode is cylindrically And the inwall that is arranged on photoelectrocatalysioxidization oxidization device is inboard, ultraviolet lamp tube is arranged in the outside of negative electrode, and photoelectricity is urged Change and on oxidation unit, drain pipe is set, be filled with electrolyte in photoelectrocatalysioxidization oxidization device, from the oil-containing of boats and ships Sewage passes sequentially through grid, ultrasonic emulsion breaking device, oil wiper, modified filter membranes and photoelectrocatalysioxidization oxidization device And discharged by drain pipe.
  2. Ultrasound-enhanced film the most according to claim 1 combines photo-electrocatalytic technology and processes vessel oily water Device, it is characterized in that: described ultrasonic probe is evenly distributed on the inwall of ultrasonic emulsion breaking device.
  3. Ultrasound-enhanced film the most according to claim 1 and 2 combines photo-electrocatalytic technology and processes boats and ships oil-containing The device of sewage, is characterized in that: described modified filter membranes uses PVC Yu PVDF blend hollow fiber membrane, The surface-coated hydroaropic substance of blend film, described hydroaropic substance include modified powdered zeolite, Kaolin, Clay, kieselguhr and chitosan.
  4. Ultrasound-enhanced film the most according to claim 1 and 2 combines photo-electrocatalytic technology and processes boats and ships oil-containing The device of sewage, is characterized in that: the anode of photoelectrocatalysioxidization oxidization device is the SnO that Pt modifies2/TiO2Nanometer Pipe electrode, the negative electrode of electrocatalysis oxidation apparatus is stainless steel bar or copper rod, and light source ultraviolet lamp tube divides in the shape of a spiral Cloth is distributed in around negative electrode at cathode outer side or by four straight fluorescent tubes;Described electrolyte is NaCl, Na2SO4、 NaClO4In one or more, electrolyte concentration is 0.1-0.5mol/L.
  5. Ultrasound-enhanced film the most according to claim 3 combines photo-electrocatalytic technology and processes vessel oily water Device, it is characterized in that: the anode of photoelectrocatalysioxidization oxidization device be Pt modify SnO2/TiO2Nanotube electricity Pole, the negative electrode of electrocatalysis oxidation apparatus is stainless steel bar or copper rod, and light source ultraviolet lamp tube is distributed in the shape of a spiral Cathode outer side or be distributed in around negative electrode by four straight fluorescent tubes;Described electrolyte is NaCl, Na2SO4、NaClO4 In one or more, electrolyte concentration is 0.1-0.5mol/L.
  6. The most ultrasound-enhanced film combines the method that photo-electrocatalytic technology processes vessel oily water, it is characterized in that: adopt Device with following process vessel oily water:
    Including grid, ultrasonic emulsion breaking device, membrane-filtering unit, photoelectrocatalysioxidization oxidization device, ultrasonic emulsion breaking device In ultrasonic probe is set, drug feeding device is installed at the top of ultrasonic emulsion breaking device, and the bottom of ultrasonic emulsion breaking device is oblique Plate structure, arranges sewage draining exit below swash plate structure, be respectively provided with modified filter membranes and oil wiper in membrane-filtering unit, Arrange on membrane-filtering unit and DC source, ultraviolet lamp tube, aeration dress are set in blow-off pipe photoelectrocatalysioxidization oxidization device Putting, DC source includes anode and negative electrode, and negative electrode is arranged on the middle part of photoelectrocatalysioxidization oxidization device, anode in Cylindric and to be arranged on the inwall of photoelectrocatalysioxidization oxidization device inboard, ultraviolet lamp tube is arranged in the outside of negative electrode, Drain pipe is set on photoelectrocatalysioxidization oxidization device, in photoelectrocatalysioxidization oxidization device, is filled with electrolyte;
    (1) vessel oily water is entered in ultrasonic emulsion breaking device through grid by collecting, by adding Medicine device adds AP type demulsifier in ultrasonic emulsion breaking device, and demulsifier concentration is 10-1000mg/L, enables super Sonic probe, supersonic frequency 15-30kHz of ultrasonic probe, ultrasonic power 50-500w, sonication treatment time 10-30min, proportion is discharged by sewage draining exit more than the precipitate of water;
    (2) oil-polluted water after sonicated enters in the oil wiper of membrane-filtering unit, stands in oil wiper Scraped off the floating greasy dirt in upper strata by oil scraping plate after 10-30min, blow-off pipe discharge greasy dirt;
    (3) sewage scraping off upper strata greasy dirt enters photoelectrocatalysioxidization oxidization device, to power supply after modified filter membranes Energising, voltage range is 1-10V, is passed through ozone, oxygen or air in aerator, and dosage is 5-30 Mg/L, ultraviolet lamp tube is energized thus completes photoelectrocatalysioxidization oxidization process, the dirt processed by photoelectrocatalysioxidization oxidization Water detects through verifying attachment, when its index reaches pre-provisioning request, discharges with crossing drain pipe.
  7. Ultrasound-enhanced film the most according to claim 6 combines photo-electrocatalytic technology and processes vessel oily water Method, it is characterized in that: the anode of photoelectrocatalysioxidization oxidization device be Pt modify SnO2/TiO2Nanotube electricity Pole, the SnO that Pt modifies2/TiO2The preparation process of nanotube is:
    (1) anodizing is used to prepare TiO with titanium plate2Nano-tube array: with platinized platinum as negative electrode, titanium plate For anode, the most gradually applying 0-30V voltage, increase 1V per minute, magnetic stirrer is slow Take out titanium plate after the lower oxidation 30min of stirring, then carry out anodic oxidation and prepare TiO2Nanotube array;
    (2) SnO is prepared2/TiO2Nanotube array composite material: prepared by pulse electrodeposition method SnO2/TiO2Nanotube array composite material;
    (3) hydrothermal synthesis method is used to prepare the SnO that Pt modifies2/TiO2Nanotube electrode: in hydrothermal reaction kettle Add six hydration platinum acid chloride solutions, formalin and sodium lauryl sulphate, stir, then evacuation, Add the SnO prepared2/TiO2The hydrothermal reaction kettle of nanotube array composite material good seal is placed in Muffle furnace In 180 DEG C reaction 10h, be cooled to room temperature, loads platinum titanium dioxide nanotube electrode is transferred to lead to N2Protection Tube furnace in 250 DEG C annealing 2h.
  8. Ultrasound-enhanced film the most according to claim 7 combines photo-electrocatalytic technology and processes vessel oily water Method, it is characterized in that: use anodizing prepare TiO2Array during nanotube, with titanium net or foam Titanium replaces titanium plate.
CN201610356540.2A 2016-05-25 2016-05-25 Device and method for treating vessel oily sewage by ultrasonic strengthening membrane with combination of photo-electrocatalytic technology Pending CN105858984A (en)

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CN106430821A (en) * 2016-09-30 2017-02-22 哈尔滨工程大学 Ship black water and ash water treatment device and method
CN109502703A (en) * 2018-12-17 2019-03-22 长江水利委员会长江科学院 The suppressing method and device of a kind of pair of bed mud provenance cyanobacteria recovery
CN110015749A (en) * 2019-04-03 2019-07-16 上海海事大学 One kind being used for emulsified waste liquid sterilization process device and technique
CN110787799A (en) * 2019-08-16 2020-02-14 浙江工业大学 Preparation method of foamed copper oxide/TNTs photoelectric composite material
CN111252970A (en) * 2020-02-13 2020-06-09 湛江远通高新技术有限公司 Oil-water separation method for oily sewage of ship
CN113415937A (en) * 2021-06-15 2021-09-21 盐城海德能水处理环保工程有限公司 Oil field exploitation wastewater treatment equipment and method

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CN103523971A (en) * 2013-10-22 2014-01-22 中国海洋石油总公司 Combined treatment method and combined treatment system for offshore platform domestic sewage

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CN1429773A (en) * 2001-12-31 2003-07-16 中国科学院大连化学物理研究所 Method of treating oil field waste water by electric-multiphase catalytic reaction and its special equipment
CN101492200A (en) * 2009-03-04 2009-07-29 广东工业大学 Method for photoelectrocatalysis oxidization of organic waste water with ozone
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Publication number Priority date Publication date Assignee Title
CN106430821A (en) * 2016-09-30 2017-02-22 哈尔滨工程大学 Ship black water and ash water treatment device and method
CN106430821B (en) * 2016-09-30 2019-09-27 哈尔滨工程大学 A kind of ship Heisui River and waste water treatment device and method
CN109502703A (en) * 2018-12-17 2019-03-22 长江水利委员会长江科学院 The suppressing method and device of a kind of pair of bed mud provenance cyanobacteria recovery
CN110015749A (en) * 2019-04-03 2019-07-16 上海海事大学 One kind being used for emulsified waste liquid sterilization process device and technique
CN110787799A (en) * 2019-08-16 2020-02-14 浙江工业大学 Preparation method of foamed copper oxide/TNTs photoelectric composite material
CN110787799B (en) * 2019-08-16 2022-08-23 浙江工业大学 Preparation method of foamed copper oxide/TNTs photoelectric composite material
CN111252970A (en) * 2020-02-13 2020-06-09 湛江远通高新技术有限公司 Oil-water separation method for oily sewage of ship
CN113415937A (en) * 2021-06-15 2021-09-21 盐城海德能水处理环保工程有限公司 Oil field exploitation wastewater treatment equipment and method

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