EP3408228A1 - Cartouche pour purifier de l'eau au moyen d'un matériau adsorbant électro-actif (potentiel zêta) - Google Patents

Cartouche pour purifier de l'eau au moyen d'un matériau adsorbant électro-actif (potentiel zêta)

Info

Publication number
EP3408228A1
EP3408228A1 EP17701696.1A EP17701696A EP3408228A1 EP 3408228 A1 EP3408228 A1 EP 3408228A1 EP 17701696 A EP17701696 A EP 17701696A EP 3408228 A1 EP3408228 A1 EP 3408228A1
Authority
EP
European Patent Office
Prior art keywords
layer
water
cartridge
housing
electroactive
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP17701696.1A
Other languages
German (de)
English (en)
Inventor
Ralf SÖCKNICK
Wolfgang KUGELMANN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gruenbeck Wasseraufbereitung GmbH
Original Assignee
Gruenbeck Wasseraufbereitung GmbH
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 Gruenbeck Wasseraufbereitung GmbH filed Critical Gruenbeck Wasseraufbereitung GmbH
Publication of EP3408228A1 publication Critical patent/EP3408228A1/fr
Pending legal-status Critical Current

Links

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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B01J20/18—Synthetic zeolitic molecular sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B01J20/28007—Sorbent size or size distribution, e.g. particle size with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28052—Several layers of identical or different sorbents stacked in a housing, e.g. in a column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204—Inorganic carriers, supports or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3234—Inorganic material layers
    • B01J20/3236—Inorganic material layers containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0442—Antimicrobial, antibacterial, antifungal additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/069—Special geometry of layers
    • B01D2239/0695—Wound layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/42—Materials comprising a mixture of inorganic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/46—Materials comprising a mixture of inorganic and organic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
    • B01J2220/62—In a cartridge
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/305—Endocrine disruptive agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/306—Pesticides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/36—Organic compounds containing halogen
    • C02F2101/363—PCB's; PCP's
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/36—Organic compounds containing halogen
    • C02F2101/366—Dioxine; Furan
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/003—Coaxial constructions, e.g. a cartridge located coaxially within another
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/006—Cartridges
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection

Definitions

  • the invention relates to a device for purifying water.
  • different filters are known from the prior art.
  • a water filter for example, turbid substances, microorganisms and undesired substances dissolved in the water can be removed or at least reduced in their concentration.
  • water filters either mechanical particles contained in the water, remove from the water, for example, by sieving techniques, or exploit the chemical-physical effects to remove contained or dissolved in water substances.
  • the water filters which mechanically remove particles from the water include, for example, sieve filters or osmosis filters with a permeable filter membrane of predetermined pore size, eg micro-ultra or nanofilters, reverse osmosis modules or filters with a granular filter bed such as gravel, stone or sand filters.
  • a permeable filter membrane of predetermined pore size eg micro-ultra or nanofilters, reverse osmosis modules or filters with a granular filter bed such as gravel, stone or sand filters.
  • a granular filter bed such as gravel, stone or sand filters.
  • particles with a particle size in the range from a few nm (ultrafiltration) to a few ⁇ m (microfiltration) can be separated from the water by means of filter membranes.
  • ultrafiltration membranes it is possible to remove microorganisms whose diameter is typically in the range of 20 to 50 nm from the water.
  • adsorbed molecules are bound to an adsorbent by chemical bonds (caused by valence forces), whereby the adsorbed molecules and / or the adsorbent are chemically altered.
  • substances dissolved in the water are ions, they can also be removed from the water by ion exchange using an ion exchange material.
  • electrostatically charged particles such as microorganisms, which are regularly negatively charged, can be removed from the water by electroadsorption on an electroactive material which has a ZETA potential, in particular an electropositive ZETA potential, in an aqueous environment.
  • an electroactive adsorber material for the adsorption of microorganisms from water is known.
  • the electroactive adsorbent material is an electropositive nonwoven composite comprising a mixture of nanoaluminum oxide particles or fibers and a support structure, for example, glass fiber based. Due to the electropositive ZETA potential of the textile composite material in an aqueous environment, this adsorbent material is able to remove electrostatically negatively charged particles from a liquid to be purified by electroadsorption.
  • the electroactive adsorber material known from WO 03/000407 A1 is arranged, for example, on the surface of a membrane or used as a filter bed and the liquid to be purified, in particular water, is passed through the membrane or the filter bed.
  • negatively charged particles in particular microorganisms having a particle size of less than 1 ⁇ m, are bound to the adsorber material by electroadsorption.
  • microorganisms in particular viruses and bacteria, can be removed from the water with this known adsorber material in order to sterilize the water.
  • the known electroactive adsorber material is not suitable for removing uncharged particles. Since the beginning of the 1990s, endocrine-disrupting substances in waters have attracted scientific and public interest.
  • Endocrine-disrupting substances are substances that can influence and disturb the normal hormonal activity of humans and animals. If the influence of the endocrine active substances leads to impairments of the hormone system, the substances are also referred to as endocrine disruptors. Such endocrine disruptors may be naturally occurring or synthetically produced. Examples of endocrine disruptors that are partially detectable in food and feed, and especially in drinking water, include pesticides, dioxins, PCBs and bisphenol A (BPA). Endocrine disruptors may also be caused by pharmaceuticals containing endocrine disruptors, such as the anti-baby pill, Analgesics, thyroid hormone replacement products or X-ray contrast media through the domestic or clinical wastewater into the water cycle. Frequently, such substances contained in the water already act in very low concentrations in the ⁇ g or ng range per liter as endocrine disruptors.
  • endocrine active substances or other organic or inorganic impurities in water may include water filters based on adsorbent materials, such as e.g. Activated carbon, are used.
  • adsorbent materials such as e.g. Activated carbon
  • From DE 10 2013 006 711 AI a method and a filter device for the treatment or purification of water based on an adsorption filter is known which contains an adsorption material based on activated carbon.
  • the inorganic or organic impurities to be removed from the water are thereby bound by physical adsorption on the adsorption material and thereby removed from the water.
  • adsorbent materials in water filters there is a risk of nucleation or proliferation in the adsorbent material, which can result in undesirable contamination of the filtered water.
  • Microbial contamination of the adsorption material can be observed, above all, in activated carbon-based adsorption filters.
  • the microorganisms suspended in the drinking water such as bacteria, viruses and occasionally also lower fungi, can colonize the adsorption material.
  • microcolonies and entire biofilms can coat the activated charcoal granulate in a fixed bed feeder.
  • biofilms of different characteristics can be formed. The reason for the rapid spread of microorganisms in such adsorption filters is the good pathway of the relatively large interspaces activated carbon beds.
  • the microorganisms embedded in such a biofilm are also able to use compounds already adsorbed in the activated carbon from the water to be filtered as a nutrient source. If such substances have accumulated on the adsorption material after prolonged operation of the filter, this can additionally promote the development of biofilm.
  • the activated carbon in an activated carbon filter is not constantly flowed through by raw water, there is a particularly high risk of contamination, because it then forms on the surface of the activated carbon a moist environment, which offers ideal conditions for the propagation of germs. For these reasons, activated charcoal adsorption filters are very suitable for removal trace contaminants, micropollutants and endocrine disruptors from water, however, pose a high risk of contamination.
  • the object of the invention is to provide a device for purifying water, with which both a disinfection or sterilization of the water and the reliable removal of inorganic or organic impurities, such as e.g. Trace substances and endocrine disruptors is made possible.
  • an efficient and uniform as possible flow of water through the device should be carried out at the lowest possible flow resistance. This should make it possible to arrange the device, for example, at a point of use for drinking water, without suffering a pressure loss.
  • the inventive device comprises a housing with a raw water inlet and a cartridge inserted in the housing, which contains a first layer and a second layer of an adsorbent material (adsorbent), wherein the first and the second layer each of an electroactive adsorber with an electrokinetic potential in an aqueous environment (ZETA potential) are formed, at which microorganisms contained in the water, in particular viruses and germs, accumulate by electroadsorption.
  • An electroactive adsorber material is understood to mean an adsorbent having an electrokinetic potential which is different from zero in an aqueous environment (and in particular in the pH range from 3 to 9), at which charged particles can accumulate by electrostatic adsorption.
  • the cartridge further contains a third layer, which is arranged between the first and the second layer and contains an adsorbent, on the surface of which particles or solutes present in the water are adsorbed by physical and / or chemical adsorption.
  • the layers of the cartridge are each formed as a hollow cylinder and arranged concentrically with each other with the first layer radially outwardly, wherein between the inside of the housing and the radially outer first layer with the raw water inlet in connection standing annular channel for uniform distribution of the raw water in the Cartridge is arranged.
  • the water to be purified is introduced through the raw water inlet into the housing and over the annular channel so introduced into the arranged in the housing cartridge that the water in the cartridge first flows through the first layer, then the third layer and finally the second layer.
  • microorganisms contained in the first and second layers in the water are bound by electroadsorption to the electroactive adsorber material of the first or second layer and thereby removed from the water.
  • non-polar particles or dissolved substances, including dissolved polar substances, in the water are bound to the adsorbent of the third layer by physical and / or chemical adsorption and in this way from the water away.
  • the physical or chemical adsorption takes place by enrichment and binding of the polar or non-polar substances on the surface, in particular the inner surface, of the adsorbent of the third layer.
  • the device according to the invention is therefore able to remove both charged particles, in particular negatively charged microorganisms, and also uncharged particles and nonpolar dissolved substances, in particular inorganic or organic contaminants such as trace substances and endocrine-active substances, from the water. This prevents the water to be purified by microbial contamination of the adsorbent of the third layer can be contaminated.
  • the third layer is arranged between the first and the second layer, each of which contains an electroactive adsorber material to which microorganisms contained in the water, in particular viruses and germs, accumulate by electroadsorption.
  • the third layer with the physical or chemical adsorbent is surrounded on both sides, ie, upstream and downstream of the water flow, by the electroactive adsorber material of the first or the second layer, for which reason microorganisms which are present in the physical or chemical Adsorbent of the third layer can be caused by natural multiplication, not get out of the device according to the invention and thus can not contaminate the already purified water.
  • the porous or powdery adsorption material of the third layer can not escape from the device, because any charged particles of the adsorbent, which are carried by the water stream can be bound in the downstream arranged second layer by electroadsorption.
  • the electroactive adsorber material of the first and the second layer knows in aqueous environment and preferably in the pH range of 3 to 9, in particular from 5 to 8, an electropositive potential (ZETA potential).
  • the (physical or chemical) adsorbent of the third layer may, for example, be activated carbon, silica gel or a zeolite or else a combination of these materials.
  • the adsorbent may expediently be in the form of a block or as a bed of adsorbent granules.
  • the device according to the invention is at least substantially cylindrical, wherein the cylindrical cartridge consists of the three each formed as a hollow cylinder and arranged coaxially to each other layers, wherein the first layer is arranged radially outward and the second layer radially inwardly and to be cleaned Water flows through the cartridge radially from outside to inside.
  • the cartridge consisting of the first, the second and the third layer, is expediently exchangeable arranged in the likewise cylindrically shaped housing. At the cylindrical housing while a connection piece is arranged, which contains the raw water inlet.
  • the housing has expediently a raw water inlet and expediently via an outlet for discharging the purified water and arranged in the interior of the housing and connected to the output collecting channel in which the purified water is collected and passed to the output.
  • the collecting channel is expediently arranged radially inwardly and extends in the axial direction of the cartridge.
  • the raw water which preferably flows in through the raw water inlet at the end into the housing, is distributed uniformly in the annular channel, from there in the radial direction first through the radially outer first layer, then through the third layer and finally through the radially inner second layer into the collecting channel ,
  • Both the first layer and the second layer may expediently be formed from an electroactive adsorber material having a flat carrier material and be shaped as a wound body or as a pleat body. This represents a great effective Adsorber Design the first and the second layer and a simple construction safely and ensures low flow resistance.
  • the adsorbent disposed between the first layer and the second layer of the third layer may be formed, for example, as a sintered body.
  • Figure 1 Schematic representation of a device according to the invention for the purification of water
  • Figure 2 perspective exploded view of a preferred embodiment of a device according to the invention
  • FIG. 3 an exploded perspective view of the device of FIG. 2 with a housing shown in half section;
  • FIG. 4 shows a sectional view of the device of FIG. 3 with a detailed view of a connecting piece arranged on the housing;
  • Figure 5 sectional view of another embodiment of a device according to the invention.
  • an adsorber arrangement is shown schematically, which can be used in the device according to the invention for the purification of water.
  • the adsorber arrangement comprises a first layer 1 and a second layer 2. These are each formed from an electroactive adsorber material having an electrokinetic potential (ZETA potential) in an aqueous environment. Due to the electrokinetic potential of the electroactive adsorber material of the first layer 1 and the second layer 2, microorganisms contained in the water, for example viruses and germs which are regularly electrically charged, can accumulate on the adsorber material due to electroadsorption. Microorganisms contained in the water are usually negatively charged.
  • suitable for the Forming the adsorbent material of the first layer 1 and the second layer 2 particularly expedient an electropositive adsorbent material which has a positive electrokinetic ZETA potential in an aqueous environment and in particular in the typical pH range of drinking water between 6.5 to 9.
  • electroactive adsorber materials may be formed, for example, by non-woven fabrics or textile composites containing metal oxides, in particular aluminum oxide and / or aluminum hydroxides and / or boehmite and / or zirconium oxide and / or zirconium hydroxide.
  • the electroactive adsorber material may also contain a silicate, such as aluminum or calcium silicate.
  • Electroactive adsorber materials containing silicates such as aluminum or calcium silicates are electronegatively charged and therefore can also remove positively charged particles from the water by electroadsorption on the adsorber material.
  • the formation of the adsorbent material of the first and the second layer formed by a mixture of micro- or nanoparticles or fibers of a metal oxide with a carrier material, for example a non-woven fabric as a carrier material and incorporated thereon or polymer, carbon or glass fibers.
  • the electroactive adsorber material of the first and second layers may also comprise a ceramic carrier material provided with a coating containing a metal oxide and / or a metal hydroxide and / or boehmite or zirconium oxide or zirconium hydroxide.
  • a cartridge for the device according to the invention is formed from the first layer 1, the second layer 2 and a third layer 3, wherein the first and the second layer of an electroactive adsorber material with an electrokinetic potential (zeta potential) exist in an aqueous environment, and the third layer 3 contains at least one adsorbent on whose (inner) surface particles or dissolved substances present in the water can accumulate by physical and / or chemical adsorption (physisorption or chemisorption).
  • the adsorbent of the third layer 3 is (micro) porous materials, such as activated carbon or zeolites.
  • the third layer 3 may also contain other adsorption materials which bind microorganisms by physisorption and / or chemisorption, such as silica gel or carbon powder.
  • the adsorber arrangement shown schematically in Figure 1 consisting of the first layer 1, the second layer 2 and the third layer 3 is traversed by the water to be purified in a flow direction S, the water first, the first layer 1, then the third layer 3 and then the second layer 2 flows through. As it flows through the first layer 1 microorganisms contained in the water are attached due to their electrical charge by electroadsorption on the electroactive adsorber of the first layer 1 and thereby removed from the water. The thus already largely freed from microorganisms water then flows through the third layer 3.
  • the water flows through the second layer 2.
  • microorganisms still contained in the water are deposited by electroadsorption on the electroactive adsorber material of the second layer 2 and thus removed from the water.
  • charged particles of the adsorbent of the third layer 3 which have been entrained in the flow of water through the third layer 3 from the water stream, bound in the second layer 2 by electroadsorption on the electroactive adsorber and thereby removed from the water.
  • the second layer 2 ensures that microorganisms, such as viruses and germs, which have formed by natural multiplication in the adsorbent of the third layer 3, can not get out of the device. This avoids that the water to be purified in the third layer 3 is contaminated by microorganisms formed there again when the water flows through the third layer 3.
  • the third layer 3 is formed as adsorber block of a porous adsorbent, for example, an activated carbon or a zeolite block or a porous sintered material.
  • the adsorber block of the third layer 3 is a sintered body.
  • the third layer 3 may also contain a bed of a powdered or granular adsorbent, for example in the form of activated carbon powder or zeolite granules.
  • the adsorbent of the third layer 3 is encapsulated by the first and the second layer 1, 2. This can eg. The powdery or granular adsorbent the middle, third layer 3 between the first layer 1 and the second layer 2 are held.
  • the layers 1, 2, 3 can also be arranged in an intermediate housing with a liquid-permeable outer wall.
  • the first layer 1 and the second layer 2 are particularly preferably formed in the form of a winding or a pleated body.
  • Such winding or pleat bodies can be produced by winding or pleat-shaped folding of a flat adsorber material.
  • Particularly suitable for this purpose are electroactive textile composites or flat support materials which (as described above) are coated with an electroactive metal (hydro) oxide or a metal (hydro) oxide, for example in the form of microparticles or nanoparticles or metal (hydro) oxide. Contain fibers.
  • FIGS. 2 to 4 a preferred embodiment of a device according to the invention with the adsorber arrangement shown in FIG. 1 with the layers 1 to 3 is shown.
  • the adsorber assembly consisting of the layers 1 to 3 is formed as a cylindrical cartridge 10, which contains the respective formed as a hollow cylinder layers 1-3.
  • the hollow cylinder of the first layer 1 in this case has an inner diameter which is slightly larger than the outer diameter of the hollow cylinder of the third layer 3 and the inner diameter of the hollow cylinder of the third layer 3 is slightly larger than the outer diameter of the hollow cylinder of the second layer 2. Die Hohlzylinder der first, third and second layers are concentric with each other as shown in FIG.
  • the cartridge 10 is arranged in a cylindrical housing 4 with a cylinder jacket 4a and a closed bottom 4b.
  • the cartridge 10 is removable from the housing 4 in order to replace the adsorber with the layers 1 to 3 can.
  • a removable cover 4c is provided (FIGS. 3 and 4).
  • the first layer 1 and the second layer 2 are each formed as a hollow cylindrical pleated body of a flat, electroactive adsorber material, which is pleated folded pleated.
  • the flat adsorber material of the first and the second layer 2 is in each case folded in a pleated manner along folds which run along the axis of the hollow cylinder of the layers 1 and 2.
  • the outer edges of the flat adsorber material are joined together to form a hollow cylinder along an axial connecting line, for example, by adhering the outer edges of the flat adsorber material.
  • the first and the second layer 1, 2 may be formed in this embodiment of a device according to the invention also by hollow cylindrical wound winding body of a flat electroactive adsorber.
  • the third layer 3 is arranged between the hollow cylinders of the first layer 1 and the second layer 2, the third layer 3 is arranged. This is formed as a hollow cylindrical block of an adsorbent, preferably activated carbon.
  • the adsorber assembly with the layers 1 to 3 in the form of concentric nested hollow cylinder surrounds in the device according to the invention in the center of the arrangement axially extending collecting channel 7.
  • the diameter of the substantially tubular and extending in the axial direction of the cartridge 10 collection channel 7 corresponds to the inner diameter of the hollow cylinder the radially inner second layer. 2
  • a disc-shaped cap 11 is provided on the front-side upper side of the cartridge 10 with the three layers 1 to 3.
  • This cap 11 comprises a circumferential collar 11 Ib on the outer circumference of the cap 11, which surrounds the outer circumference of the radially outer first layer 1 in the upper region.
  • the inner surface of the cap 11 is liquid-tightly connected to the (upper) end faces of the layers 1, 2, 3, for example by gluing.
  • a hollow cylindrical outlet port I Ia is formed, which is connected to an outlet opening in the cap 11.
  • the outlet 1 la is connected via this outlet opening with the collecting channel 7.
  • a disc-shaped bottom 12 is arranged with a circumferential collar 12a on the outer circumference.
  • the inner surface of the bottom 12 is also liquid-tightly connected to the (lower) end faces of the layers 1, 2, 3, for example by gluing.
  • the cartridge 10 is arranged consisting of the layers 1, 2 and 3, the bottom 12 and attached to the front-side top cap 11 in the housing 4.
  • the cartridge 10 is placed with its bottom 12 on the housing bottom 4b, wherein expediently on the inside of the housing bottom 4b, an annular spacer 4b "is provided, on which rests the underside of the bottom 12 of the adsorber.
  • an annular channel 8 is formed between the outer periphery of the radially outer first layer 1 and the inner circumference of the cylinder jacket 4 a of the housing 4, an annular channel 8 is formed.
  • the housing cover 4c is placed on the cylinder jacket 4a.
  • the housing cover 4c is formed substantially disc-shaped with a circumferential on the outer circumference and the outer circumference of the cylinder jacket 4a encompassing flange. In the center of the disc-shaped lid 4c, an opening 13 is provided.
  • the housing cover 4c has a connecting piece 9 integrally formed in the center.
  • This connecting piece 9, which is shown in detail in the insert of FIG. 4, is substantially hollow-cylindrical and has an outlet 6 and a raw water inlet 5 arranged concentrically therewith.
  • the raw water inlet 5 is formed by a coaxial with the exit 6 arranged annular channel and has connection openings 5 ', which can be connected to a raw water line.
  • a raw water pipe is connected to the raw water inlet 5.
  • the raw water to be purified flows through the raw water inlet 5 first into the intermediate space 8 'and is distributed from there into the annular channel 8. From this, the raw water flows in the radial direction from outside to inside through the cartridge 10, wherein first the radially outer first layer 1, then the third layer 3 and finally the radially inner second layer 2 is flowed through.
  • the water that has flowed through the layers 1, 3 and 2 collects in the central collecting channel 7 and can leave the device through the output 6 from there.
  • the flow direction of the water to be purified can also be reversed, so that the raw water is introduced through the central channel 7 and first the radially inner second layer 2, then the third layer 3 and finally the radially outer first Layer 1 flows through.
  • a flow reversal it can also come in the described embodiment of the device by a (generated by a pump or unintentional) negative pressure on the side of the radially outer first layer 1.
  • FIG. 5 shows a further embodiment of a device according to the invention, which is used in a position rotated by 180 ° in comparison to the device of FIG.
  • a venting of the central collecting channel 7 by an inner riser 17, which surrounds the collecting channel 7 and for this purpose is arranged in the center of the device and radially inwardly and radially spaced from the inner layer 2.
  • the riser 17 is connected at its lower end shown in Figure 5 to the output 6 and has at its opposite end an opening which is spaced from the inner surface of the bottom 12 of the cartridge 10, so that between the mouth of the riser 17th and the bottom 12, a gap 16 results.
  • the flow direction of the inflowing into the raw water inlet 5 water is shown in Figure 5 with arrows.
  • the water flows from the raw water inlet 5 via the gap 8 'in the annular channel 8 and from there in the radial direction (in this order) through the layers 1, 3 and 2.
  • a distance is provided which forms an inner annular channel 15, in which collects the purified water.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Nanotechnology (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

L'invention concerne un dispositif pour purifier de l'eau comprenant une cuve (4) munie d'une arrivée d'eau non traitée (5) et une cartouche (10) insérée dans la cuve (4), laquelle contient : une première couche (1) d'un matériau adsorbant électro-actif ayant un potentiel électrocinétique (potentiel zêta) en milieu aqueux, sur lequel des micro-organismes contenus dans l'eau, en particulier des virus et des germes, viennent se fixer par électro-adsorption ; une deuxième couche (2) d'un matériau adsorbant électro-actif ayant un potentiel électrocinétique (potentiel zêta) en milieu aqueux, sur lequel des micro-organismes contenus dans l'eau, en particulier des virus et des germes, viennent se fixer par électro-adsorption ; et une troisième couche (3), agencée entre la première couche (1) et la deuxième couche (2), qui contient un adsorbant, sur la surface duquel des particules ou des substances dissoutes se trouvant dans l'eau viennent se fixer par physisorption ou chimisorption. Les couches (1, 2, 3) sont respectivement conçues sous forme de cylindre creux et agencées de manière concentrique les unes par rapport aux autres avec la première couche (1) située radialement à l'extérieur ; et entre la face interne de la cuve (4) et la première couche (1) située radialement à l'extérieur est agencé un canal annulaire (8) communiquant avec l'arrivée d'eau non traitée (5) pour répartir l'eau non traitée dans la cartouche (10). Ce dispositif permet simultanément de purifier et de désinfecter ou de stériliser de l'eau. Il permet également de débarrasser l'eau des impuretés inorganiques ou organiques, comme les éléments traces et les perturbateurs endocrinien,s ainsi que des micro-organismes.
EP17701696.1A 2016-01-29 2017-01-26 Cartouche pour purifier de l'eau au moyen d'un matériau adsorbant électro-actif (potentiel zêta) Pending EP3408228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016100447.0U DE202016100447U1 (de) 2016-01-29 2016-01-29 Filter zur Reinigung von Wasser
PCT/EP2017/051652 WO2017129682A1 (fr) 2016-01-29 2017-01-26 Cartouche pour purifier de l'eau au moyen d'un matériau adsorbant électro-actif (potentiel zêta)

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EP3408228A1 true EP3408228A1 (fr) 2018-12-05

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EP (1) EP3408228A1 (fr)
CN (1) CN108602690A (fr)
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WO (1) WO2017129682A1 (fr)

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DE102018121904A1 (de) * 2018-09-07 2020-03-12 Instraction Gmbh Doppelhohlmantelkartusche mit zentralem Ablauf
CN109775916B (zh) * 2019-03-13 2024-02-23 深圳市盈腾美科技有限公司 一种多层拓扑二维锡饮水过滤装置
CN114667180B (zh) * 2019-11-08 2024-05-03 美国分子工程股份有限公司 在封装多孔结构中的流体处理
AU2020394503A1 (en) * 2019-11-28 2022-07-14 Bwt Holding Gmbh Cartridge for treating drinking water, and method for enriching drinking water with silicon
DE102019132319B4 (de) * 2019-11-28 2023-10-12 Bwt Ag Kartusche zur Anreicherung von Trinkwasser mit Silicium sowie deren Verwendung

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DE202016100447U1 (de) 2017-05-04
CN108602690A (zh) 2018-09-28

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