CN102464413A - Process for treating oil-containing waste water for ship - Google Patents
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- CN102464413A CN102464413A CN2011100728161A CN201110072816A CN102464413A CN 102464413 A CN102464413 A CN 102464413A CN 2011100728161 A CN2011100728161 A CN 2011100728161A CN 201110072816 A CN201110072816 A CN 201110072816A CN 102464413 A CN102464413 A CN 102464413A
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Abstract
The invention relates to a process for treating oil-containing waste water for a ship. The process comprises the following technical steps of: performing solid and liquid separation, coalescing separation treatment, adsorbing separation treatment and the like on pretreated ship oil-containing waste water sequentially. When the oil content in supplied water is less than or equal to 500 mg/L and the turbidity of the supplied water is less than or equal to 200 NTU, the oil content in discharged water quality is less than or equal to 1 mg/L and the turbidity of the discharged water quality is less than or equal to 5 NTU; and the national standard of the Integrated Pollutant Discharge Standard GB8978-1996 can be met. The method is high in treatment capacity of purifying the oil-containing waste water, namely the waste water treatment amount is up to 10 to 100 m<3>/hr, and is high in purifying efficiency, namely the oil removal rate is more than 99 percent and the turbidity removal rate is more than 90 percent. The process for treating the oil-containing waste water for the ship can be also applied to various types of oil-containing waste water, such as oil-field reinjected water, oil-base oil-containing waste water, metallurgical oil-containing waste water, steel factory oil-containing waste water, machined oil-containing waste water and the like, so that the treated oil-containing waste water can be treated until reaching the standard, and waste oil resources can be recycled.
Description
Technical field
The present invention relates to a kind of treatment process of oily(waste)water, especially relate to a kind of treatment process of the oily(waste)water that is suitable for using on the boats and ships.
Background technology
The harm that the oily(waste)water that boats and ships produce causes ocean or river has the eubiosis of destruction, life and water of productive use waterhead area to pollute and destroys littoral view.
Cabin limber water and water ballast are the main sources of boats and ships oily(waste)water.At present, ballast water for ship generally can be realized focusing on, and the cabin limber water then is difficult to be implemented to bank and focuses on.The oil-contg of cabin limber water can be up to 50000mg/L, and its annual quantity discharged is 10% of boats and ships tons gross approximately, and the pollution that huge oily(waste)water like this causes rivers,lakes and seas is difficult to the appraisal.So development efficiency is high, volume is little, the boat-carrying Sewage treatment systems at the bottom of the convenient operating maintenance, working cost, to solving the pollution problem that the cabin limber water causes, is imperative.
CN200610037772.8 disclose a kind of with the profit density difference and gather into the basis oil-water separator; Adopt the eddy flow oily water separation technique that profit in the water inlet is carried out first-stage preliminary and separate, again through secondary segregation section, with swimmer and greasy dirt coarse separator; Adopt the coarse separation principle at last; Further remove greasy dirt by three grades of fine separation sections, secondary is separated water outlet carry out advanced treatment, treat effluent can be less than 2mg/l.This invention provides a kind of integrated oily-water seperating equipment, though dwindled the equipment occupation of land, makes the equipment complex structure; It is huge that integral device is tending towards, and be unfavorable for transportation, install, and multiple functional unit is integrated in one; Equipment is controlled certainly will be complicated, and failure rate can obviously improve.
CN200710020574.5 is fit to handle automatic the separation and recovery system of profit of boats and ships bilge oily(waste)water for one kind; It has two tank body A and B; Tank body A and B inside have preparatory barrier polishing filter of bar type and bar type water-and-oil separator respectively; Be respectively applied for elementary de-oiling and degree of depth de-oiling, this device can be handled oleaginousness 2mg/L with the water inlet about oleaginousness 200mg/L.
The devices and methods therefor of a CN200810010500.8 oil-sewage ship for treating sewage adopts pre-treatment, middle processing and aftertreatment to combine.Pre-treatment is accomplished in multistage oil removal deposition cabin, and oily water lasts 42 hours from entering out; The middle processing accomplished in the gentle buoyancy module in inclined plate grease cabin; The cascade filtration device is adopted in aftertreatment.The boats and ships oily water after multistage oil removal deposition, inclined plate grease, air supporting and cascade filtration are handled, the oily water oil concentration≤5mg/L of discharge, in addition can≤2mg/L.
In sum, existing ship oil-containing waste water treating device or system exist removes ability to emulsification attitude and The dissolved oil pollutant, and treatment step is many, and processing costs is high, and device structure is complicated, and system takes up an area of big, problems such as mounting, commissioning and maintenance inconvenience.Along with the reinforcement of consciousness is particularly protected to the ocean in countries in the world with the inland river to bordering on the sea, the technological requirement with device of boats and ships oily water treatment is also being improved constantly.
Summary of the invention
The objective of the invention is to solve and existing in the prior art emulsification attitude and The dissolved oil pollutant are removed ability, treatment step is many, and processing costs is high, and device structure is complicated, and system takes up an area of big, problems such as mounting, commissioning and maintenance inconvenience.A kind of combined treatment process of new and effective boats and ships oily(waste)water is provided.The inventive method is that a kind of coalescence oily water separation technique is technological with the combined treatment that efficient adsorption technology combines; Adopt the boats and ships oil-containing sewage treatment system of combined treatment technology of the present invention to have oil in water emulsion processing efficiency and precision height, treatment scheme is short, and running cost is low; Tolerance comes the water slug ability strong; The product water quality stabilizing is up to standard, and occupation area of equipment is few, according to characteristics such as, operation and maintenance are convenient.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of boats and ships oily(waste)water treatment process and system comprise following process step:
1) primary filter processing unit: the primary filter processing unit is a strainer of being made up of housing and filtration medium, and the strainer filtering accuracy is≤10 μ m, and the filter operation condition is water-in pressure 0.1-0.5MPa; Empty bed filtration velocity 1～15m/h, preferred 4～8m/h.
The function of strainer is to remove in the sewage assortedly greater than various suspended substances of 10 μ m and machine, plays the follow-up coalescence processing unit stifled effect of not getting dirty of protecting.In removing water, in the various suspended substances, also can the part oil slick be removed.
Strainer is made up of housing and filtration medium, and filtration medium can be one or more in the filtration mediums such as shell, nut-shell, hard coal, haydite, ferrimanganic sand, silicon carbide, silica sand, garnet; Also can be various metals or nonmetal filtration medium, like metal grill, plastic network, fiber etc.Filtration medium can be a particulate state, directly is loaded into to form in the filter body to filter bed, and sewage realizes holding back filtering purpose through filtering bed; Filtration medium also can be the form with various filter cores, is installed in the filter body, in each filter body one or more filter cores can be installed.No matter adopt what filtration medium, filtering accuracy all is≤10 μ m.
2) coalescence filtration processing unit: the coalescence filtration processing unit is a coalescing filter of being made up of housing and coalescence material, and the operating pressure difference of coalescing filter is no more than 0.1MPa, and the residence time is generally 20～30min.
The function of coalescing filter is to remove dispersion in the sewage, suspended state and part emulsification attitude oil pollutant, also can realize further removal to various suspended substances and machine in the water are assorted simultaneously.
Coalescing filter among the present invention is made up of the oil trap of shell, coalescence material and upper end, and the oil trap open upper end is made oil and collected usefulness.Coalescence material can be a metallic substance, synthesized polymer material, natural macromolecular material, stupalith, or the matrix material that is made of a variety of materials.Coalescence material can be board-like, corrugated plate dst, various 3 D stereo network structures, grid structure.Coalescence material can directly be loaded in the coalescing filter, forms the coalescence filtration filtering layer, and sewage advanced the coalescent pack layer and realizes profit and solid-liquid separation; Coalescence material also can be prepared into various coalescence filter core forms and use, and is installed in the coalescing filter, and each coalescing filter can be installed one or many coalescence filter cores.Coalescing filter can be a horizontal type structure, also can be vertical structure.
The coalescence filter core is to be twined by compound coalescence filamentary material to process, and the surface hydrophilic of multilayer coalescence filamentary material/oleophilicity is different.When oily(waste)water is flowed through the coalescence material layer; Enrichment, collision, coalescence each other take place in small oil particles in the water on the coalescence material surface, and oil particles becomes greatly gradually, and big oil particles is under buoyancy and flow action in the coalescence filter core outside; Oil particles and coalescence material are peeled off; And under buoyancy, float to oil trap according to the Stokes principle, the separating oil in the oil trap drains into the oil groove that separates outside the device automatically through oil level detection device and draining valve.
3) organic adsorption treatment unit: organic absorbing unit is an adsorption filter of being made up of housing and organic absorbent filter medium; The intake pressure of organic adsorption filter is 0.2～0.6Mpa; Pressure difference is no more than 0.1MPa, empty bed filtration velocity 1～14m/h, preferred 4～8m/h.
The unitary function of organic adsorption filtration is that suspended state in the water and emulsification attitude micro oil pollutant are carried out degree of depth removal, guarantees to handle back product water and reaches various strict emission standards.
Organic adsorption filter among the present invention is made up of shell and efficient degreasing filtrate.The efficient degreasing filtrate is a kind of matrix material, and it is tabular that its microtexture is heaping die.With charcoal absorption is main different with the surface adsorption, and the absorption of efficient degreasing filtrate then is to be main with distribution principle.On efficient degreasing filtrate microtexture template, be distributed with numerous organic long-chain molecules, these molecules extend formation " filter screen " shape as hair in water.When the water that contains oil pollutant during through above-mentioned " filter screen ", long chain molecule can combine through intermolecular pretending firmly with oil particles or emulsion adhesive bundle of particle, and it is captured and be locked between template, similarly from water, it is extracted.Because this " filter screen " be to be made up of the long-chain organic molecule on the template, so its filtering accuracy can hold back small oil particles or emulsification attitude oil particles at nano-grade size, and it is high to remove precision.Simultaneously, owing to have huge pore volume between template,, has high dirt (oil) amount of receiving so its amount of holding oil pollutant is also very big.
Boats and ships oily(waste)water of the present invention pre-treatment is meant the oil removal precipitation process.The boats and ships oily(waste)water is entered water collecting basin, pump into then in the swash plate separation cell, in separation cell, arrange the many groups lateral flow inclined plate that gathers, arrange water-in and water outlet respectively in the both sides of lateral flow inclined plate.Adopt above-mentioned lateral flow inclined plate stripping technique, the residence time only needs 5min can realize the separating effect more than 90%.
On separation cell top scraper plate is set, ash pit and slag-drip opening is set in a side of scraper plate.
Adopt the swash plate pretreatment unit, can realize a large amount of oil slick in the water are separated with PM for particulate matters removals such as iron rust, silt particles.Separated floating oil is expelled to drains receptacle (groove) by water collecting dike, and mud is then discharged through mud discharging mouth.Get into next processing unit through pretreated sewage.
Especially, coalescing filter of the present invention is to adopt the coalescence filter core to realize oily water separation.The coalescence filter core is to be twined by MULTILAYER COMPOSITE coalescence filamentary material to process; Surface hydrophilic/the oleophilicity of every strata knot filamentary material is different; Coalescence filamentary material near the feed-water end place has strong surperficial oleophilicity, and has strong surface hydrophilicity near the coalescence filamentary material of water side.Coalescence filter core internal diameter Φ 1 is at 40～60mm, and external diameter Φ 2 is at 50～100mm, and length adopts the M30*2 internal thread interface at 500～1000mm.
Coalescing filter of the present invention is a horizontal type structure.Coalescing filter is made up of housing, oil trap and coalescence filter core.Coalescing filter can be installed one or more coalescence filter core bundles.Contrast traditional static oily water separation technique, advantage such as it is high that the coalescence filtration technology has processing efficiency and precision, and system's area occupied is little.
Adsorption filter among the present invention in organic adsorption filtration unit has adopted the disclosed high-efficiency multi-function organic adsorbent of CN200710105954.9 as filtration medium.The High-Efficient Organic sorbent material is a kind of efficient degreasing filtrate, and it is a kind of matrix material, and it is tabular that its microtexture is heaping die.With charcoal absorption is main different with the surface adsorption, and the absorption of efficient degreasing filtrate then is to be main with distribution principle.On efficient degreasing filtrate microtexture template, be distributed with numerous organic long-chain molecules, these molecules extend formation " filter screen " shape as hair in water.When the water that contains oil pollutant during through above-mentioned " filter screen ", long chain molecule can combine through intermolecular pretending firmly with oil particles or emulsion adhesive bundle of particle, and it is captured and be locked between template, similarly from water, it is extracted.Because this " filter screen " be to be made up of the long-chain organic molecule on the template, so its filtering accuracy can hold back small oil particles or emulsification attitude oil particles at nano-grade size, and it is high to remove precision.Simultaneously, owing to have huge pore volume between template,, has high dirt (oil) amount of receiving so its amount of holding oil pollutant is also very big.It has high adsorptive power to oil pollutant, and s-adsorption can reach more than 50%, is more than 5 times of gac.To boats and ships oily(waste)water oil removal treatment aspects such as cabin limber waters, High-Efficient Organic sorbent material specific activity charcoal has higher loading capacity and the stifled ability of anti-soil.
Adopting the efficient adsorption technology of high-efficiency multi-function organic adsorbent is a kind of degree of depth degreasing technique.This technology can guarantee that in water inlet oil-contg 10～250ppm scope, primary treatment can be handled oil-contg in the water and reach below the 5ppm.Simultaneously, the High-Efficient Organic sorbent material is high to the loading capacity of oil pollutant, and when reaching same effect, the volume of organic adsorption filter is littler, and shelf life is longer, thereby has reduced the working cost of treating processes.Efficient adsorption technology first Application is in the boats and ships oil-containing sewage treatment technique, and this is one of core technology of combined treatment process among the present invention.
Boats and ships oily(waste)water treatment process of the present invention and equipment have following advantage:
1, boats and ships oily(waste)water treatment process of the present invention is made up of primary filter processing, coalescence filtration processing and organic adsorption treatment unit.The function of prime filter is to remove in the sewage assortedly greater than various suspended substances of 10 μ m and machine, plays the follow-up coalescence processing unit stifled effect of not getting dirty of protecting.In removing water, in the various suspended substances, also can the part oil slick be removed.The coalescence filtration unit mainly is to remove dispersed, suspended state and part emulsification attitude oil pollutant in the sewage, also can realize further removal to various suspended substances and machine in the water are assorted simultaneously.The unitary function of organic adsorption filtration is that suspended state in the water and emulsification attitude micro oil pollutant are carried out degree of depth removal, guarantees to handle back product water and reaches various strict emission standards.Adopt the combined treatment process among the present invention, sewage is carried out stage treatment, can guarantee respectively to handle unitary Optimizing operation and stable product water water quality.
Characteristics such as 2, the pretreatment technology in the combined treatment process of the present invention adopts the swash plate water-and-oil separator, and it has the processing power height, and oily water separation and solid-liquid separation efficiency are high, and resistant is stifled.
3, coalescing filter of the present invention has adopted by special porous and has had the coalescence filter core that the oleophylic of optimization/hydrophilic fiber material is made; To oil pollutant in the water particularly dispersed oil and machinery emulsification oil have high coalescence coarse effect, oily water separation efficient is high.
2, the new and effective oil removing filtrate of organic adsorption filter employing of the present invention, high to the adsorptive power of oil pollutant, anti-soil blocks up advantages such as ability is strong, and physical strength is good.
3, the treatment capacity of oil-contained waste water treatment system of the present invention generally is 10～100m3/hr, and the oil pollutant clearance is greater than 99%, and turbidity removal rate is greater than 90%.
4, oil-contained waste water treatment system of the present invention, at water inlet oil-contg≤500mg/L, during turbidity≤200NTU, effluent quality can reach oil-contg≤1mg/L, and turbidity≤5NTU reaches the national standard of GB8978-1996 " integrated wastewater discharge standard ".
5, the present invention adopts the combined treatment process of pre-treatment-coalescence filtration-organic adsorption filtration, and it is wide to have the accommodation of processing, and processing efficiency and precision are high, and shock-resistant energy is strong, and equipment takes up an area of little, and running cost is low etc.
6, boats and ships oily(waste)water treatment technology of the present invention and technology can be applied in the treating processes of various oily(waste)waters; Handle like oil field reinjection water; The oil depot oily(waste)water is handled; Electroplate oily water treatment, water reuse pre-treatment in the embrane method, processing such as metallurgical oily(waste)water, steel mill and mechanical workout oily(waste)water etc.
Description of drawings
Accompanying drawing 1 is a kind of boats and ships oily(waste)water processing technological flow synoptic diagram of the present invention.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of patent of the present invention.But it can not be interpreted as it is limitation of the present invention.
Embodiment 1
By boats and ships oily(waste)water processing technological flow shown in Figure 1, former water is that oleaginousness is 446.0mg/L, and turbidity is the boats and ships oily(waste)water of 166NTU.
1, primary filter is handled
Pretreated oily(waste)water process intake pump of process and under meter pump into the water-in of upper filter part, and strainer is made up of housing and 10 μ m filter cores, and flooding velocity is 15m3/hr, water-in pressure 0.25MPa; Empty bed filtration velocity 4m/h.
2, coalescence filtration is handled
Oily(waste)water through behind the prime filter enters into horizontal coalescing filter, handles the back and produces the entering intermediate water tank.Coalescing filter is made up of housing, oil trap and coalescence filter core.5 coalescence filter cores are installed in the coalescing filter, coalescence filter core internal diameter Φ 50mm, external diameter Φ 80mm, length 750mm adopts the M30*2 internal thread interface.The coalescence filter core is divided into breakdown of emulsion layer, coalescence layer, drain layer by glass fibre porous material, and the filtering accuracy of microporous fibre coalescence layer is 5 μ m, and coalescing filter pressure reduction is no more than 0.03Mpa, and the residence time is 20min.Oily(waste)water oil-contg after the process coalescence filtration is handled is generally at 10～30ppm.
3, organic adsorption filtration is handled
Middle producing in the water tank passed through the top pump people of intake pump from organic adsorption filter 20 through the product water after the coalescence filtration processing, handles the back and produces entering product water tank.Be filled with novel de-oiling filtrate organic adsorbent in organic adsorption filter.The water inlet flow velocity is 7.5m/hr, and intake pressure is 0.25MPa.Through the product water oil-contg≤1ppm after organic adsorption filtration processing.
According to the GB/T16488-1996 method, detect the oleaginousness of producing the generation in the water tank, and calculate clearance, the result sees table 1.According to the GB13200-91 method, measure to produce in the water tank and produce water turbidity, and calculate turbidity removal rate, the result sees table 1.
Embodiment 2
By boats and ships oily(waste)water processing technological flow shown in Figure 1, former water is that oleaginousness is 231.6mg/L, and turbidity is the boats and ships oily(waste)water of 172NTU.
It is 25m3/hr that primary filter is handled flooding velocity, water-in pressure 0.3MPa; Filtration velocity 5m/hr, other is identical with embodiment 1.
The unitary residence time of coalescence filtration is 15min in the coalescence filtration treating processes, and other is identical with embodiment 1.
Organic adsorption filtration separating treatment water inlet flow velocity is 6m/hr, and intake pressure is outside the 0.2Mpa, and other is identical with embodiment 1.
Embodiment 3
By boats and ships oily(waste)water processing technological flow shown in Figure 1, former water is that oleaginousness is 447.9mg/L, and turbidity is the boats and ships oily(waste)water of 129NTU.
It is 50m3/hr that primary filter is handled flooding velocity, water-in pressure 0.35Mpa, and outside the filtration velocity 7.5m/hr, other is identical with embodiment 1.
The residence time of filtering unit is 25min in the coalescence filtration treating processes, and other is identical with embodiment 1.
It is 8m/hr that the water inlet flow velocity is handled in organic adsorption filtration, and intake pressure is outside the 0.4Mpa, and other is identical with embodiment 1.
Embodiment 4
By boats and ships oily(waste)water processing technological flow shown in Figure 1, former water is that oleaginousness is 522.0mg/L, and turbidity is a water reuse oily(waste)water in the embrane method of 38.9NTU.
It is 75m3/hr that primary filter is handled flooding velocity, water-in pressure 0.4Mpa, and outside the filtration velocity 8m/hr, other is identical with embodiment 1.
In the coalescence filtration treating processes, coalescing filter is installed 8 coalescence filter cores, coalescence filter core internal diameter Φ 60mm, and external diameter Φ 100mm, length 800mm, the residence time is 25min, other is identical with embodiment 1.
It is 10m/hr that the water inlet flow velocity is handled in organic adsorption filtration, and intake pressure is 0.5Mpa, and other is identical with embodiment 1.
Embodiment 5
By boats and ships oily(waste)water processing technological flow shown in Figure 1, former water is that oleaginousness is 245.4mg/L, and turbidity is a water reuse oily(waste)water in the embrane method of 29.8NTU.
It is 100m3/hr that primary filter is handled flooding velocity, water-in pressure 0.5Mpa, and filtration velocity 10m/hr, other is identical with embodiment 1.
In the coalescence filtration treating processes, strainer is installed 10 coalescence filter cores, coalescence filter core internal diameter Φ 60mm, and external diameter Φ 100mm, length 1000mm, the residence time is 27min, other is identical with embodiment 1.
It is 9.5m/hr that the water inlet flow velocity is handled in organic adsorption filtration, and residence time 15min, intake pressure are 0.5Mpa, and other is identical with embodiment 1.
Table 1 boats and ships oily(waste)water of the present invention treatment process test result
Experimental result shows:
1, the water inlet oil-contg is less than 500mg/L, and turbidity after combined treatment process of the present invention and treatment system processing, produces the water oleaginousness less than 1.0mg/L less than the oily(waste)water of 200NTU, and the oil pollutant clearance reaches more than 99%.Produce water turbidity less than 3NTU, the total clearance of turbidity is more than 90%.Oily(waste)water combined treatment process of the present invention has high oil removing and turbidity removal rate.
2, the combined treatment process of patent of the present invention in the scope of influent quality broad, all shows the stable treated effect, produces water quality stabilizing.
3, adopt combined treatment process of the present invention, produce water and can reach various dischargings or middle water reuse requirement.
Claims (9)
1. boats and ships oily(waste)water treatment process comprises following process step:
1) solid-liquid separation will be passed through pretreated boats and ships oily(waste)water and pumped into the strainer of being made up of housing and 10 μ m filter cores through intake pump, and removal can not settled small granular suspended matters;
2) coarse separation is handled, and through the oily(waste)water that said strainer solid-liquid separation is handled, relies on the pressure of strainer water outlet, gets into coalescing separator and carries out oily water separation;
3) fractionation by adsorption is handled, and the oily(waste)water of handling through coarse separation flows into the fractionation by adsorption device, in the fractionation by adsorption device, under the effect of organically-modified sorbing material, filters and adsorption treatment, and the oil in the absorption waste water is purified clear water.
2. a kind of boats and ships oily(waste)water treatment process according to claim 1 is characterized in that in the said solid-liquid separation process, the flow of controlling former water is 10-100m3/hr, water-in pressure 0.1-0.5Mpa, the empty bed of control filtration velocity 1～15m/h.
3. a kind of boats and ships oily(waste)water treatment process according to claim 1; It is characterized in that the coalescing filter that said coarse separation processing employing is made up of housing and coalescence material; The control coarse separation is handled and is kept pressure reduction to be no more than 0.1MPa, and the residence time of coarse separation section is 20～30min.
4. a kind of boats and ships oily(waste)water treatment process according to claim 3 is characterized in that said coalescence material can be a metallic substance, synthesized polymer material, natural macromolecular material, a kind of in the stupalith or the matrix material that is made of a variety of materials.
5. a kind of boats and ships oily(waste)water treatment process according to claim 4; It is characterized in that said coalescence material is directly to be loaded in the coalescing filter; Form the coalescence filtration filtering layer, its structure formation can be board-like, corrugated plate dst; Grid structure, one or more combinations in the various 3 D stereo network structures.
6. a kind of boats and ships oily(waste)water treatment process according to claim 4 is characterized in that said coalescence material is to be prepared into coalescence filter core form to use, and is installed in the coalescing filter, and each coalescing filter can be installed one or many coalescence filter cores.
7. a kind of boats and ships oily(waste)water treatment process according to claim 1; It is characterized in that the residence time that said fractionation by adsorption treating processes control waste water carries out in the filtration and adsorption treatment process is 6～15min; The intake pressure that waste water flows into the fractionation by adsorption device is 0.2～0.6Mpa; Pressure difference is no more than 0.1MPa, empty bed filtration velocity 1～14m/h.
8. according to any described a kind of boats and ships oily(waste)water treatment process of claim 1-7, it is characterized in that said oily(waste)water treatment capacity reaches 10～100m3/hr; Purification efficiency is high, and the oils clearance is greater than 99%, and turbidity removal rate is greater than 90%.
9. according to any described a kind of boats and ships oily(waste)water treatment process of claim 1-7, it is characterized in that at water inlet oil-contg≤500mg/L during turbidity≤200NTU, effluent quality can reach oil-contg≤1mg/L, turbidity≤5NTU.
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| CN111333216A (en) * | 2020-03-06 | 2020-06-26 | 北京中科康仑环境科技研究院有限公司 | Treatment and reuse process of methanol-to-olefin wastewater |
| CN114180761A (en) * | 2021-12-30 | 2022-03-15 | 陕西华祥能源科技集团有限公司 | Oil field thin oil wastewater treatment system and method |
| CN114804393A (en) * | 2022-06-06 | 2022-07-29 | 青岛百利达环保科技有限公司 | Device and method for removing oil and impurities from oilfield reinjection water |
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