WO1994011307A1 - Traitement a l'ozone d'eaux usees d'une decharge publique - Google Patents

Traitement a l'ozone d'eaux usees d'une decharge publique Download PDF

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Publication number
WO1994011307A1
WO1994011307A1 PCT/US1993/010897 US9310897W WO9411307A1 WO 1994011307 A1 WO1994011307 A1 WO 1994011307A1 US 9310897 W US9310897 W US 9310897W WO 9411307 A1 WO9411307 A1 WO 9411307A1
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WIPO (PCT)
Prior art keywords
water
waste
reactor
landfill
recited
Prior art date
Application number
PCT/US1993/010897
Other languages
English (en)
Inventor
William R. Martin
Robert A. Panza
Original Assignee
Pacific Energy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pacific Energy filed Critical Pacific Energy
Priority to AU56007/94A priority Critical patent/AU5600794A/en
Publication of WO1994011307A1 publication Critical patent/WO1994011307A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C02F1/325—Irradiation devices or lamp constructions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate

Definitions

  • This invention is related to a method and apparatus for the treatment of waste-water from landfills.
  • Landfills are typically divided into four classifications based on their intended content: Class One landfills are for the dumping of hazardous waste; Class Two, for non-hazardous waste including liquids; Class Three, for non-hazardous, non-liquid waste; and Class Four, for inert waste such as construction rubble.
  • a primary concern regarding landfill management is the containment of the materials in the landfill, and these concerns are related to.the type of refuse in the landfill and the landfill's exposure to water and liquids.
  • leaks of waste-water from landfills have contaminated underground aquifers. Such contamination can require pumping out the entire contents of the aquifer and processing the water to remove the contaminants. Such procedure constitutes an enormous and expensive task.
  • landfills Two forms of waste-water from landfills are commonly distinguished: “leachate” and “condensate.”
  • Leachate is the waste-water generated from liquids percolating through the landfill (such as from precipitation or irrigation water which fall on or drain into the landfill, and from liquids deposited with the refuse or formed during the decomposition of refuse) . As liquids percolate through the landfill, they wash away soluble and insoluble components of the refuse.
  • the contaminants likely to be collected in the runoff vary with the class of the landfill involved, but may include heavy metals, bacteria, pesticides, organic matter, organic solvents, oils, fats, and the like. Ordinarily, ' a Class One landfill would be expected to discharge more hazardous contaminants into its waste-water than a Class Four landfill. However, consideration of factors such as design, location, climate, the presence of unanticipated chemicals and other factors provide more meaningful information when evaluating the risk of contamination than the landfill's classification.
  • Condensate is waste-water resulting from the collection of water saturated landfill gas. As the gas is cooled, moisture in the warm gas condenses. Landfill gas, which typically contains from 30% to 60% methane and 40% to 50% carbon dioxide, plus small levels of other constituents including nitrogen and volatile organic compounds, is produced in landfills when organic material is anaerobically decomposed by naturally-occurring bacteria. The landfill gas so produced may be collected in piping and used for energy production, or simply disposed of by burning. Gas in the landfill is typically at about 100°F to 120°F and is saturated with water. As the gas is collected and transported, it cools, and the water contained in it condenses and accumulates in the collection system.
  • blowers and compressor systems that are used in plants to transport and compress the gas collected from the landfills, reduce the moisture content of the gas and create condensate. To meet local liquid disposal standards, contaminants in the condensate often must be treated or removed prior to disposal of the water.
  • Ozone (0 3 ) oxidation.
  • Ozone is tri-atomic oxygen and decomposes into 0 2 with a half-life of about 20 minutes, under ambient conditions. Ozone's instability makes it a powerful oxidizing agent. Ozone is a colorless gas, at ambient conditions, with a strong characteristic odor. It is highly toxic and explosive'above a threshold concentration of 23% by volume, in a gas mixture.
  • Any oxidizable substance is a potential target of 0 3 oxidation.
  • Such species can include heavy metal ions of copper, iron, nickel, chromium, and other inorganic species such as cyanides. In these cases, the metal ions are oxidized to a high oxidation state, making them insoluble in water and capable of being filtered from solutions containing them.
  • 0 3 is demonstrably better than chlorination processes and oxidizes the bacteria
  • Escherichia coli about 3,125 times faster than chlorine.
  • the combination of UV irradiation with 0 3 treatment substantially increases the effectiveness of the 0 3 .
  • Ozone oxidizes phenol to oxalic and acetic acids.
  • trihalomethanes may also be oxidized, provided the pH is properly adjusted.
  • This combination of UV and 0 3 also has the capacity of degrading pesticides (e.g., DDT) and other persistent organic industrial wastes, such as PCB, PPB, chlorophenols, chloroaijilines, and chlorobenzenes, to nontoxic compounds that may be easily biodegraded.
  • Ozone is used industrially to oxidize free cyanide (KCN) from plating wastes and results in the generation of the nontoxic cyanate (KCNO) , which can be further oxidized to carbon dioxide and the nitrate anion.
  • KCN free cyanide
  • KCNO nontoxic cyanate
  • UV irradiation hastens this oxidation and further allows for the degradation of iron cyanide complexes, glycine, glycerol, ethanol, and acetic acid.
  • Phenolic effluents from paper mills, coke mills, and oil refineries can also be oxidized into simple components. While 0 3 has been used to degrade a single type of contaminant, none of these applications has dealt with the mixtures of different contaminants in high concentrations, i.e., total organic carbons (TOCs) in the range of 500 to 10,000 ppm or more, that would be expected to be found in waste-water from landfills.
  • TOCs total organic carbons
  • the present invention relates to an apparatus and to a process for the effective treatment of waste-water from landfills to remove contaminants.
  • the process of the present invention comprises the steps of collecting waste- water from a landfill and mixing the waste water with generated 0 3 .
  • the waste-water/0 3 mixture is then reacted by spraying the mixture into a primary 0 3 /UV reactor where it is reacted to form treated waste-water.
  • An apparatus to carry out the process of the present invention is also provided.
  • pretreatment of the waste-water with flocculents or by processing the water through a secondary reactor may be incorporated into the treatment system.
  • treatment of the waste-water after it has been reacted in the 0 3 /UV reactor with filters may also be included.
  • FIG. 1 is a schematic representation of a waste-water treatment system, wherein the solid lines represent the path of the waste-water, the dashed lines represent the path of 0 3 , and the dotted lines represent the path of waste-water/0 3 mixtures; and
  • FIG. 2 is a schematic representation of another embodiment of a waste-water treatment system, wherein the lines represent the path of the waste-water.
  • the method and the apparatus of the present invention use ozone (0 3 ) in combination with ultraviolet (UV) light to oxidize contaminants of waste-water from landfills.
  • the contaminants in landfills comprise organic solvents, aromatics, insecticides, heavy metals, bacteria, priority pollutants (as defined by the EPA) , and mixtures thereof.
  • the present invention relates to an apparatus and to a process for the effective treatment of waste-water from landfills to destroy contaminants.
  • the process of the present invention comprises collecting the water from a landfill and adjusting the pH to a suitable range. Typically this can be either slightly acidic (about 6.2 to about 6.6) or basic (above about 8.0) depending on the original pH of the waste-water.
  • the waste-water is then mixed with 0 3 . While any concentration of 0 3 is effective in the treatment of the waste-water, preferred concentrations are 1 to 20 mg 0 3 /l waste-water.
  • the 0 3 /waste-water mixture is then reacted under ultraviolet light in a primary 0 3 /UV reactor to form treated waste-water.
  • the treated waste- water further treated with a filter package.
  • a secondary 0 3 /UV reactor can be used in addition to the primary 0 3 /UV reactor. After pH adjustment, and prior to mixing the waste-water with fresh 0 3 , the waste-water can be mixed with the exhaust from the primary 0 3 /UV reactor, which still contains unreacted 0 3 , and transferred to the secondary 0 3 /UV reactor to pretreat the waste-water.
  • This embodiment of the present invention is described in detail below in conjunction with FIG. 1.
  • the treatment is conducted in a continuous batch-wise manner, with water being collected, processed, and released from the treatment system before more waste-water is collected.
  • an air or oxygen supply is fed into an 0 3 generator 12.
  • the oxygen suitable for use in the present invention is either in the form of liquid oxygen compressed in a tank, in the form of air compressed from atmospheric air, or in other forms that are known in the art.
  • Ozone may be generated by two basic methods: silent electric discharge (or coronal discharge) and UV irradiation.
  • the corona discharge method uses an alternating-current, high-voltage electrical discharge across a gap which contains a steady flow of oxygen.
  • Ozone is produced in the corona as a direct result of power dissipation therein. Without being bound by scientific theory, it is thought that the reaction path for the generation of 0 3 is initiated by free, excited electrons, generated within the gap, dissociating oxygen molecules to produce oxygen atoms : e "1 + 0 2 ⁇ 20 + e "1 Ozone is then formed through a three-body collision:
  • Ozone generation by UV irradiation is a practical method when small quantities of 0 3 are required.
  • Evidence points to a mechanism whereby an oxygen molecule is dissociated into two oxygen atoms upon the absorption of light. The oxygen atom then reacts with an oxygen molecule to produce 0 3 .
  • Ozone is formed from diatomic oxygen with light at a wavelength of 187 nm. While 0 3 can be made in this way, it is not economically feasible for large-scale production, due to the cost of the large power consumption required for the process. In the present invention, the silent electrical discharge method of generating 0 3 is preferred.
  • the generated 0 3 is fed into a mixer 14 and is mixed, by methods known in the art, with pretreated waste- water (pretreated as described below) .
  • pretreated waste- water pretreated as described below
  • the pretreated waste-water is supplied from a waste-water holding tank 30.
  • the 0 3 feed is at a concentration of about 2% to about 4% by weight.
  • the combined pretreated waste-water/0 3 mixture is fed into a primary 0 3 /UV reactor 18. Upon entering the 0 3 /UV reactor, the pretreated waste-water/0 3 mixture is atomized through atomizer 20.
  • the atomizer comprises a spray nozzle, and the pretreated waste-water/0 3 mixture is forced through the nozzle at a pressure of about 42,000 kg/m 2 .
  • Reactors of this type are supplied by Ozone Processes Inc. of San Diego, CA.
  • the gas and liquid streams are premixed and fed to a spray- nozzle manifold inside the 0 3 /UV reactor.
  • the liquid/gas stream is atomized to generate particles of water of an average diameter of about 50 ⁇ m. Since the liquid/gas stream is mixed under pressure, prior to atomization, 0 3 is dissolved in the liquid to be treated. The remainder of the 0 3 is present in a gas phase.
  • the atomization of the waste-water/0 3 mix results in a large surface area of waste-water available for contact with the 0 3 .
  • the large contact area greatly increases the reaction rate of the 0 3 with contaminants present in the waste-water.
  • UV irradiation of the waste-water/0 3 also increases reaction rate to about 10,000 times the rate of waste- water/0 3 mix alone.
  • the normally slow reaction of 0 3 with certain organic compounds, i.e., 0 3 with aliphatic hydrocarbons, is increased so that, with excess 0 3 , the reaction can be driven to completion (i.e., C0 2 , H 2 0) in only a few seconds.
  • completion i.e., C0 2 , H 2 0
  • many toxic compounds need only be broken into two or three fragments to render them biodegradable or harmless constituents.
  • the primary 0 3 /UV reactor includes UV sources 22 which generate UV light at a wavelength of about 254 nm. As the "droplets" of waste-water/0 3 fall under gravity, they are exposed to UV irradiation, accelerating the reaction of the 0 3 to oxidize contaminants in the waste- water. While UV light at a wavelength of 187 nm can be used for the synthesis of 0 3 , UV light at a wavelength of 254 nm is photolytic toward 0 3 and results in the decomposition of 0 3 to form a reactive oxygen radical 0 2 .
  • the oxidized waste-water can be further purified by filtering to remove particulate matter generated by the UV irradiation reaction; by processing to remove C0 2 generated by the oxidation of organic matter; by filtering through activated carbon to remove soluble contaminants; or by other suitable methods as may be required to produce water of the desired purity. If the waste-water is not of a desired purity, it can be recycled for treatment in the primary 0 3 /UV reactor or in a secondary 0 3 /UV reactor, as required.
  • the oxidized waste-water is filtered through granulated activated carbon to produce water suitable for non- agricultural irrigation uses.
  • Ozone not decomposed in the primary 0 3 /UV reactor, and oxygen generated from the UV irradiation/oxidation reaction, are collected, by pumping, from the gas phase of the primary 0 3 /UV reactor and are transferred for pretreatment of waste-water in a secondary 0 3 /UV reactor 28, which is identical to the primary 0 3 /UV reactor described above.
  • the 0 3 concentration in the collected gas phase stream is typically one-third to one-half that entering the primary 0 3 /UV reactor.
  • Waste-water is collected from a landfill 16, either from runoff water, precipitation or irrigation which percolates through the landfill (leachate) , or from condensation which collects in pipes in which landfill gas generated by the landfill is collected (condensate) .
  • the waste-water is collected from the landfill by conventional collection methods, known by those skilled in the art, into a holding tank 30. When sufficient water is collected, it is fed to the secondary 0 3 /UV reactor. Prior to reaching the secondary 0 3 /UV reactor, it is mixed with the 0 3 gas phase collected from the exhaust of the primary 0 3 /UV reactor in mixer 24. This waste-water/0 3 mixture is introduced into the secondary 0 3 /UV reactor, where it is atomized and irradiated with UV light, as described above for the primary 0 3 /UV reactor.
  • the gas phase 0 3 remaining after reaction in the secondary 0 3 /UV reactor is collected and transferred to an 0 3 destruct unit 36, where any remaining 0 3 is destroyed by UV irradiation or other suitable method.
  • This gas is then discharged into the atmosphere or recycled for further use of the 0 2 present in the gas, preferably for use in a process such as an aerobic biodegradation process.
  • the partially oxidized pretreated waste-water is collected in storage tank 30, then mixed with freshly generated 0 3 .
  • the treatment cycle of the water is started again with the collection of a new batch of waste-water and the production of fresh 0 3 .
  • the pretreatment of the waste-water has the advantage of exposing, at least twice, the contaminants of the waste-water to oxidation, thereby increasing the effectiveness of the oxidation process. Also, the 0 3 generated is used more efficiently than if it were to be destroyed before all or most of the 0 3 were consumed.
  • Table I sets forth the criteria for water for non- agricultural irrigation purposes produced by the 0 3 /UV reactor system of the present invention.
  • TSS 1 Not greater than 40 mg/1 daily max. Not greater than 15 mg/1 30 day max.
  • COD 2 Not greater than 20 mg/1 30 day max. Not greater than 60 mg/1 daily max.
  • TDS 3 Not greater than 900 mg/1 monthly max. Chloride Not greater than tap water chloride plus 85 mg/1
  • a single 0 3 /UV reactor is used in combination with filters as shown in FIG. 2.
  • waste water is collected from a landfill 40 into a tank 44.
  • the water may, if desired, be pretreated with flocculents such as high molecular weight polymers such as those sold by American Cyanimide under the tradename 541C or 883A or other flocculents, which are well known in the art.
  • the precipitated material which forms in the presence of the flocculents is removed by centrifugation or filtration.
  • the pH of the waste water is adjusted. In the case of condensate the pH is preferably adjusted to at least about 8.0. In the case of leachate or leachate/condensate mixtures the pH is adjusted to about 6.2 to about 6.6. In general, if the collected waste- water has an acidic pH it, is adjusted to an alkaline pH prior to treatment and if the collected waste-water has an alkaline pH it is adjusted to an acidic pH prior to treatment. The pH adjusted water is transferred to a 0 3 /UV reactor 46. Prior to reaching the 0 3 /UV reactor, the waste-water is mixed with the 0 3 in mixer 50.
  • the 0 3 is “fed” into the waste-water at a rate of about 1 to about 20 mg 0 3 /l.
  • the 0 3 /UV reactor is identical to the 0 3 /UV reactors described above and includes atomizer 52 and UV sources 54.
  • the "atomization" of the waste-water in the 0 3 /UV reactor results in 0 3 concentrations as low as 1 mg/1 of waste-water being effective for the treatment of the "atomized” waste-water, compared to concentrations as high as 75 to 100 mg/1 which are required for the treatment of a liquid streams.
  • the UV-irradiated waste- water condenses in the bottom 56 of the 0 3 /UV reactor, where the water is collected and directed to filters 58, 60 and 62.
  • UV-irradiated waste- water which condenses in the bottom of the 0 3 /UV reactor is collected and pumped back to tank 44.
  • Some of the UV- irradiated waste-water from the bottom of the 0 3 /UV reactor is diverted from the main stream and is sent to filters 58, 60 and 62.
  • filters 58, 60 and 62 Many combinations of filters can be used.
  • the preferred combination is a coarse cartridge filter 58 followed by a fine cartridge filter 60 then a particle filter 62.
  • granular activated carbon is used for the particle filter. Activated carbon, when used in this manner with this type of 0 3 /UV reactor has demonstrated the added benefit of an extremely extended adsorption life, by some unique in si tu regeneration effect.
  • the filtering system comprises three filters through which the oxidized waste-water passes, in sequence.
  • the first is a 20 micron filter 58 to remove large particulate matter.
  • Such filters are well known in the art and are of the type used as swimming pool filters.
  • the second filter is a 20 micron/diatomatious earth filter 60, such filters are also of a type used as swimming pool filters and are also well known in the art .
  • the third filter is an activated carbon filter 62.
  • the carbon filter for use in the present invention is preferably a granular composition of a size of about 12 x 30 mesh.
  • Carbon particles that are very small are undesirable for use in the present invention since they are powdery and cannot be easily contained within the filter and tend to be washed through with the flow of waste water. Particles that are too large are undesirable for use in the present invention since at size of about 1/4" x 1/4", the particles have an undesirably low surface area to volume ratio. Carbon filtration is an important step in the process and a ratio of maximum flow to volume
  • the water is then transferred back to the tank 44.
  • the water is then discharged into the sewers, represented by box 64, if it is of sufficient purity, or it may again be directed into the 0 3 /UV reactor for further treatment.
  • the gas phase 0 3 remaining after reaction in the 0 3 /UV reactor is collected and transferred to an 0 3 destruct unit 66, where any remaining 0 3 is destroyed by UV irradiation or other suitable method.
  • This gas is then discharged into the atmosphere or recycled for further use of the 0 2 present in the gas, preferably for use in a process such as an aerobic biodegradation process.
  • a secondary 0 3 /UV reactor (not shown) can be incorporated to use the exhaust gas from the primary 0 3 /UV reactor 56.
  • the exhaust gas contains some ozone which can be use as a pretreatment for the waste-water in the secondary 0 3 /UV reactor.
  • This process typically one-third to one-half of the waste-water being supplied to the primary 0 3 /UV reactor 56 is fed into mixer and mixed with the waste- water.
  • This combined waste-water/exhaust 0 3 mixture is then reacted in the secondary 0 3 /UV reactor.
  • the waste- water is then reacted in the primary 0 3 /UV reactor as described above.
  • the waste-water can be cycled between the primary and secondary 0 3 /UV reactors until the desired purity is obtained.
  • the pretreatment of the waste-water in the secondary 0 3 /UV reactor has the advantages of increasing capacity of the treatment system and increasing the purity of the waste-water without the expense of larger or secondary ozone generator. Table II sets forth different treatment "runs" performed on different source water where the COD of the water was monitored during the treatment. Table II
  • Table III sets forth the results of an analysis of a waste-water sample before and after treatment in an 0 3 /UV reactor/filter system.
  • the treatment systems of the present invention is typically of a size that can be skid mounted and easily moved from one site to another as needed.
  • the construction of the treatment systems of the present invention is preferably from materials such as polyvinyl chloride (PVC) , or other suitable material, for the piping and storage tanks.
  • PVC polyvinyl chloride
  • These features of the designs of the present invention make the equipment costs very low and thus the treatment of the waste-water inexpensive.
  • the process 'of the present invention is very efficient compared to other treatment processes. For example, the irradiation of the waste-water, by spraying an "atomized" stream of waste-water and exposing the spray to a UV light source overcomes many of the difficulties encountered when a stream of water is to be treated.
  • Waste-water of the type treated in the process of the present invention is often dense or opaque and light will not penetrate into the water stream. Therefore, the treatment in such water stream is only effective for the water in contact with, or very close proximity to, the light source.
  • the number of tanks, and the direction of flow between them and the 0 3 /UV reactors could be varied; the waste-water could be processed multiple times through the 0 3 /UV reactors to eliminate contaminants; other forms of purification in addition to or instead of the granulated activated carbon could be used; the waste-water could be further purified by biological oxidation processes; other oxidizing agents, such as H 2 0 2 , could be added in addition to 0 3 ; a secondary 0 3 /UV reactor/filter system could be operated from the exhaust gas from the primary 0 3 /UV reactor to allow two separate waste-water streams to be processed simultaneously; a secondary 0 3 /UV reactor/filter system could be run from the exhaust gas of the primary 0 3 /UV reactor/filter package with the treated waste-water being sent to the primary 0 3 /UV reactor/filter package for further processing; or the waste-water stream can be pretreated to remove solids by centrifugation after treatment with a chemical flocking agent (such as those manufactured by Betz

Abstract

L'invention concerne un appareil et un procédé pour le traitement efficace d'eaux usées de décharges publiques afin d'éliminer les contaminants. Le procédé de l'invention consiste à récupérer les eaux usées provenant d'une décharge publique (16) et à mélanger (14) les eaux usées avec de l'ozone généré (12). On fait réagir le mélange eaux usées/ozone en atomisant (20) le mélange dans un réacteur principal ozone/UV (18) dans lequel il réagit pour donner des eaux usées traitées. Un appareil permettant de mettre en ÷uvre le procédé de l'invention est également décrit.
PCT/US1993/010897 1992-11-16 1993-11-12 Traitement a l'ozone d'eaux usees d'une decharge publique WO1994011307A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU56007/94A AU5600794A (en) 1992-11-16 1993-11-12 Ozone treatment of landfill waste-water

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US97686992A 1992-11-16 1992-11-16
US07/976,869 1992-11-16

Publications (1)

Publication Number Publication Date
WO1994011307A1 true WO1994011307A1 (fr) 1994-05-26

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997036825A1 (fr) * 1996-04-03 1997-10-09 Klean A/S Procede et appareil de purification de l'eau
DE10144510A1 (de) * 2001-09-10 2003-04-03 Wedeco Ag Ozon/UV-Kombination zum Abbau von endokrinen Substanzen
WO2006078797A2 (fr) * 2005-01-19 2006-07-27 Heavy Industry Technology Solutions, Llc Procedes et systemes de traitement des eaux usees
WO2008043437A2 (fr) * 2006-10-14 2008-04-17 Rev Renewable Energy Ventures Ag Élimination des germes dans un récipient au moyen d'un rayonnement uv-c
US7481937B2 (en) 2005-01-19 2009-01-27 Heavy Industry Technology Solutions, Llc Methods and systems for treating wastewater using ozone activated flotation
WO2010034617A1 (fr) * 2008-09-24 2010-04-01 Voith Patent Gmbh Traitement d'eaux résiduaires
ITMI20130106A1 (it) * 2013-01-24 2014-07-25 Sal S R L Apparecchiatura per il trattamento catalitico accelerato di rifiuti e scarti organici con tecniche di ossidazione avanzata
CN108392968A (zh) * 2018-04-12 2018-08-14 宁波大学 一种垃圾中转站中垃圾逸散臭气处理系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920547A (en) * 1974-05-06 1975-11-18 Houston Research Inc Method of destroying cyanides
US4273660A (en) * 1979-02-21 1981-06-16 Beitzel Stuart W Purification of water through the use of ozone and ultraviolet light
US4865749A (en) * 1987-04-16 1989-09-12 Yasunobu Yoshida Method and apparatus for purifying air and water
US4978508A (en) * 1988-09-01 1990-12-18 Pacific Resource Recovery Corp. Method and apparatus for soil decontamination

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920547A (en) * 1974-05-06 1975-11-18 Houston Research Inc Method of destroying cyanides
US4273660A (en) * 1979-02-21 1981-06-16 Beitzel Stuart W Purification of water through the use of ozone and ultraviolet light
US4865749A (en) * 1987-04-16 1989-09-12 Yasunobu Yoshida Method and apparatus for purifying air and water
US4978508A (en) * 1988-09-01 1990-12-18 Pacific Resource Recovery Corp. Method and apparatus for soil decontamination

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997036825A1 (fr) * 1996-04-03 1997-10-09 Klean A/S Procede et appareil de purification de l'eau
US7462288B2 (en) 2001-09-10 2008-12-09 Wedeco Ag Water Technology Ozone/UV combination for the decomposition of endocrine substances
DE10144510A1 (de) * 2001-09-10 2003-04-03 Wedeco Ag Ozon/UV-Kombination zum Abbau von endokrinen Substanzen
US7842182B2 (en) 2001-09-10 2010-11-30 Wedeco Ag Water Technology Ozone/UV combination for the decomposition of resistant substances
US7481937B2 (en) 2005-01-19 2009-01-27 Heavy Industry Technology Solutions, Llc Methods and systems for treating wastewater using ozone activated flotation
WO2006078797A3 (fr) * 2005-01-19 2009-05-14 Heavy Industry Technology Solu Procedes et systemes de traitement des eaux usees
WO2006078797A2 (fr) * 2005-01-19 2006-07-27 Heavy Industry Technology Solutions, Llc Procedes et systemes de traitement des eaux usees
WO2008043437A3 (fr) * 2006-10-14 2008-05-29 Rev Renewable Energy Ventures Élimination des germes dans un récipient au moyen d'un rayonnement uv-c
WO2008043437A2 (fr) * 2006-10-14 2008-04-17 Rev Renewable Energy Ventures Ag Élimination des germes dans un récipient au moyen d'un rayonnement uv-c
WO2010034617A1 (fr) * 2008-09-24 2010-04-01 Voith Patent Gmbh Traitement d'eaux résiduaires
ITMI20130106A1 (it) * 2013-01-24 2014-07-25 Sal S R L Apparecchiatura per il trattamento catalitico accelerato di rifiuti e scarti organici con tecniche di ossidazione avanzata
CN108392968A (zh) * 2018-04-12 2018-08-14 宁波大学 一种垃圾中转站中垃圾逸散臭气处理系统
CN108392968B (zh) * 2018-04-12 2024-01-12 宁波大学 一种垃圾中转站中垃圾逸散臭气处理系统

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