WO2020098878A1 - Dispositif de filtration - Google Patents

Dispositif de filtration Download PDF

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Publication number
WO2020098878A1
WO2020098878A1 PCT/DE2019/100970 DE2019100970W WO2020098878A1 WO 2020098878 A1 WO2020098878 A1 WO 2020098878A1 DE 2019100970 W DE2019100970 W DE 2019100970W WO 2020098878 A1 WO2020098878 A1 WO 2020098878A1
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WO
WIPO (PCT)
Prior art keywords
filter
water
filter membrane
membrane
algae
Prior art date
Application number
PCT/DE2019/100970
Other languages
German (de)
English (en)
Inventor
Dawid Marek Slomski
Original Assignee
Dawid Marek Slomski
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 Dawid Marek Slomski filed Critical Dawid Marek Slomski
Publication of WO2020098878A1 publication Critical patent/WO2020098878A1/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
    • C02F1/001—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/147—Microfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/16—Feed pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/18—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/20—Accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08—Prevention of membrane fouling or of concentration polarisation
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2642—Aggregation, sedimentation, flocculation, precipitation or coagulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2661—Addition of gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2661—Addition of gas
    • B01D2311/2665—Aeration other than for cleaning purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/26—Specific gas distributors or gas intakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/06—Submerged-type; Immersion type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/10—Cross-flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/18—Use of gases
    • B01D2321/185—Aeration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/20—By influencing the flow
    • B01D2321/2033—By influencing the flow dynamically
    • B01D2321/2041—Mixers; Agitators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/35—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling with acoustic waves
    • 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
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • 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
    • C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
    • 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
    • C02F2103/08—Seawater, e.g. for desalination
    • 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
    • C02F2201/78—Details relating to ozone treatment devices
    • C02F2201/782—Ozone generators
    • 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
    • C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention

Definitions

  • the invention relates to a filter device for filtering algae, microorganisms and the like from water and a cleaning system constructed therefrom.
  • microorganisms such as algae, microorganisms, bacteria and the like are contained in addition to the actual flora and fauna. Only the microorganisms contained in the world's oceans represent a biomass with a practically inexhaustible supply that continues to grow. So-called algal blooms often occur, especially in heated and essentially immobile waters. This means that the number of algae and microorganisms, for example in g / m 3 , exceeds a certain value, so that the water is depleted of oxygen and, for example, fish suffocate.
  • the algae are filtered out of the water. This can be done, among other things, by adding precipitants, but this is hardly feasible from a practical and ecological point of view. It is also known to mechanically filter algae out of the water using filter devices, for example by means of centrifuges, or by adsorption or by pressure relaxation flotation. Such filter devices can also be designed to be floatable in order to be used in a mobile manner.
  • the filter devices usually have a filter space to which water is supplied via an inlet, a filter membrane for filtering out the algae, and an outlet downstream of the filter membrane in order to remove the cleaned water again.
  • a device for the pre-cleaning of sea water in particular is known, which comprises a filter space, a feed for water, a drain for purified water, a gassing device and a discharge device for discharging impurities.
  • an additional flocculation tank for flocculation is connected upstream of the filter room.
  • the invention has for its object to develop a filter device for Al gene in such a way that it can be operated in a simple manner is and has a high efficiency. Furthermore, a cleaning system constructed from it should be specified.
  • a cleaning system according to the invention can also be constructed.
  • the device for filtering algae, microorganisms and the like comprises a filter space to which the water to be filtered can be supplied by means of an inlet.
  • a filter membrane for filtering out algae, microorganisms and the like is arranged in particular on the bottom.
  • a drain for the ge filtered water is provided below the filter membrane.
  • a gassing device for supplying a gas to the filter membrane in a counterflow to the water serves to keep the filter membrane clean, which is preferably arranged below the filter membrane.
  • an agitator is provided in the filter room to keep the water in the filter room in circulation.
  • a discharge device for carrying contaminants to the surface of the water in the filter space is present in the filter space.
  • the filter space which is formed, for example, by a housing made of metal, in particular special stainless steel, creates a delimited space in which an increasing algae concentration is obtained by the constant supply of water.
  • the filter space is, for example, cubic, but it can also have all other geometries.
  • the surface area of the filter membrane or of a filter is preferably selected to be large enough that resistance is caused by the pressure loss during Filtering out is minimized.
  • the water flows through one or more inlets into the filter chamber in a flow direction, for example from top to bottom. Algae, microorganisms and the like are filtered out on the bottom-side filter or the filter membrane, and the cleaned water exits the filter chamber via an outlet, which is arranged behind the filter membrane when viewed in the direction of flow.
  • a gassing device is arranged between the outlet and the filter membrane, for example to blow ambient air into the filter space from bottom to top.
  • the rising gas bubbles penetrate the filter membrane and remove residues, especially on the top.
  • the injected gas causes the filtrate to foam.
  • the amount of gas, the gas pressure and the flow rate of the water are matched to one another in such a way that optimal filter performance is achieved.
  • the flow velocities and the volume flows are selected such that the rising gas bubbles are not torn down by the water flow.
  • such gassing can alternatively or additionally be carried out with air nozzles which are distributed in the interior of the filter space in order to keep the surface of the filter membrane clean.
  • an agitator also known as a disperser, is provided in the filter space, which can be designed in any way per se and, for example, also consists of metal / stainless steel in order to maintain a circulation of the water in the filter space and the Promote foam formation on the surface of the water.
  • a plurality of paddle-shaped and possibly flow-shaped sheets can be rotatably mounted on a linkage.
  • the agitator also generates a current parallel to the filter membrane in order to minimize their clogging.
  • the discharge device can, for example, be a fixed component in the form of a flow guide plate. Due to the rotary movement of the agitator and the cross flow generated in a cleaning system composed of several filter devices, the foam floating on the surface of the water is also rotated and can be automatically skimmed off with a suitably arranged and shaped flow baffle and via a separate outlet for further use are fed.
  • This flow baffle can also be designed height adjustable bar, for example by means of screws on one or more vertically arranged perforated rails, in order to achieve an optimal carrying result.
  • the discharge device can also comprise a movable, that is to say a linearly movable or rotating slide or the like which, by its movement, skims off the foam floating on the surface of the water.
  • the filter room can have a volume of 375m 3 with a filter area of 125m 2 .
  • the filter membrane has a pore size or mesh size of, for example, 10 to 20 pm.
  • the pore diameter can also be between 1 and 20 miti. The optimum pore diameter can be determined depending on the location by test runs with different filter membranes.
  • algae are filtered out of the water, collected and concentrated.
  • the algae or the filtrate can then be used for further purposes.
  • the algae are composted and used as fertilizers.
  • the algae or the filtrate can be used to generate biogas or other fuels. It is also possible to recycle the protein and other nutrients contained in the algae for food production.
  • Such a filter device can be designed to be stationary in order to also serve as a wastewater treatment plant. It can also be designed to be mobile, that is to say it can be mounted on or in a vehicle. In particular, it can be installed in a ship, such as a motor or sailing ship or a barge, which is equipped with a preferably movable funnel in order to collect sea water and to feed it to the filter device.
  • the filter device can be constructed stationary at a location of high flow speed in a body of water, with corresponding supply and discharge channels being provided. The current can be determined by tides and / or geological conditions.
  • the water regardless of whether in mobile or stationary operation, is first passed through a turbine for energy generation in order to subsequently follow the actual one Filter device to be fed.
  • a turbine for energy generation
  • the actual one Filter device to be fed.
  • pumps and other components of the filter device can be operated with the energy obtained.
  • the filter device is used for fast, environmentally friendly and low-energy harvesting, for example of algal blooms, from flowing or open water with a flow rate of several cubic meters per second.
  • the filter membrane serves on the one hand to filter out microorganisms from the water, since the drain is arranged below the filter membrane as seen in the direction of flow, and on the other hand to ensure that the air bubbles rising from the gassing device are of the correct size. This is achieved in that the air bubbles rising from the gassing device, which is arranged between the outlet and the filter membrane, also penetrate the filter membrane and thus have a desired size.
  • the filter device is assigned pumps, corresponding lines, any sensors per se for monitoring the correct operation and a controller for controlling all components.
  • the controller can either follow a fixed program sequence and / or can also be controlled individually in remote mode.
  • the inflow or inlets is assigned a frother which already swirls the inflowing water in order to improve the foam formation.
  • the frother can either be designed as a static component or also movable, for example according to the functional principle of a whisk. It can also be provided on foaming nozzles.
  • the filter membrane for example a fine-meshed metal grid.
  • the filter membrane or the filter consists of ceramic.
  • the filter membrane is formed by a ceramic membrane. This can be produced with the mesh size described above and has sufficient strength and resistance, for example, to sea water. The surface thereof is preferably formed to be hydrophobic and / or provided with the lotus effect in order to prevent residues from accumulating. A mass transfer between the water and the blown air can also be supported.
  • the membrane also specifies the size of the air bubbles rising from the fumigation device arranged underneath in the actual filter space.
  • the size of the air bubbles is predetermined by the mesh size of the membrane and can be selected according to the desired filtration effect.
  • baffles can be arranged at desired positions with the desired size and shape at the inlet and outlet and in the filter space in order to guide the water to be filtered in a preferred amount and flow rate.
  • the baffles are rigidly arranged or designed to adapt, for example, to adapt to different volume flows.
  • the water flowing into the filter device through one or, in particular, two symmetrically arranged inlets is preferably conducted in such a way that cross-flow or semi-flow filtration takes place.
  • the inflowing volume flow in each successive filter device is gradually reduced, while the total exits from all filter devices or an entire cleaning system Water flow remains constant. Since decreasing volume flows flow into the successively arranged filter devices, different, then decreasing concentrations of the filtrate are also present in the filter devices. This means that conventional cleaning processes such as flotation and dispersion are combined with simultaneous cross-flow or semi-flow filtration.
  • baffles can be provided, which direct the air flow flowing into the filter chamber from the gassing device in a countercurrent principle, counter to the direction of flow of the flowing water with the microorganisms, in order to increase the filter performance.
  • the discharge device it is proposed that it comprise a fixed rake or frame and a slide which is relatively movable relative to it.
  • the respective profiles of the slider can be formed in any manner per se, for example, saw-like, wave-like or in each case inclined in a straight line or the like.
  • an ozone generator can be assigned to the inlet in order to increase the flotation properties of algae and thus the discharge or the effectiveness of the filter device.
  • the ozone generator for example, water is split up, producing ozone.
  • the ozone has a direct positive effect on foam formation.
  • a device for generating ultrasound is assigned to the filter membrane.
  • the ultrasound device can be activated and the filter membrane can be subjected to ultrasound. Ultrasound is fatal to most microorganisms because it disintegrates their cell structure. It should only be used if a pressure drop due to a decreasing filter area is registered. This can be determined, for example, by means of a pressure sensor.
  • Optical monitoring of the filter membrane can also be carried out in order to prevent the filter from clogging Filter membrane to automatically start the ultrasonic device for cleaning the filter membrane.
  • a purification system for water can be constructed from such a filter device.
  • a plurality of filter devices of essentially identical construction are preferably arranged one behind the other, for example two, three or four.
  • the flow conditions are preferably selected such that a smaller volume flow occurs in each successive filter device, for example in the case of a cleaning system with three filter devices, in each case by 33% with in particular the same flow rate.
  • Cross-flow or semi-cross-flow filtration can thus be obtained.
  • the filter devices can also be arranged as a square or rectangle. It can be seen that, for example, a central feed line is provided, from which the water to be cleaned is in each case supplied to the individual filter devices via pipelines.
  • the respective processes for the purified water can be combined into a central process.
  • all components of the filter device are controlled centrally, for example in order to be able to set the throughput quantity of water and gas and all functionalities.
  • valves, flow meters, sensors and the like are provided.
  • Fig. 2 is a composite cleaning system and Fig. 3 is a discharge device with slide and rake.
  • a filter device 1 is shown purely schematically in cross section. It has a filter space 2, which is formed, for example, by a housing 3 made of stainless steel. Via an inlet 4, what flows in the flow direction according to arrow S into the filter chamber 2 and leaves it again via an outlet 6 on the underside of the filter chamber 2.
  • a filter membrane 5 is used to clean the water, in particular of algae, microorganisms and the like Metal grid or as a ceramic membrane or filter and for example has a hydrophobic and / or lotus effect surface.
  • a gassing device 7 is arranged below the filter membrane 5 in the flow direction according to the arrow S, for example a perforated pipeline network to which compressed air is applied, which is only indicated schematically here.
  • the escaping gas flows upward in the opposite direction according to arrow G and thereby passes through the filter membrane 5. This removes residues on the filter membrane 5 and thus prevents their clogging.
  • an agitator 8 is provided which, as indicated by the double arrow D, can be rotated. Mixing of the water in the filter space 2 is achieved with the agitator 8.
  • the agitator 8 comprises, for example, some paddles which are rotatably mounted on a frame in order to generate a current parallel to the filter membrane 5, so that their clogging or clogging is reduced.
  • a foam 10 is formed on the surface O of the water, which consists of foamed algae and is indicated here schematically with wavy lines.
  • the foam 10 is discharged from the filter chamber 2 by a discharge device 9, here a slide which can be moved linearly according to the arrow L, and is preferably collected.
  • the foam 10 floating on the surface O of the water is skimmed off with the slide which is linearly movable according to the arrow L.
  • the discharge device 9 can also be designed in a simple manner as a particularly height-adjustable flow guide plate which automatically floats on the surface O of the water and with the water skimming co-rotating foam 10 and, for example, feeds a separate exit for further use.
  • the foam 10 can then, for example, be composted or processed into fuels, foods or other end products.
  • a cleaning system 1 1 forms rank, which is composed of four filter devices 1, the filter devices 1 are only shown in simplified form as a block. From the direction of flow of the water according to arrow S it can be seen that all four filter devices 1 are supplied with water, which then flows out in a cleaned manner. More or fewer filter devices 1 can also be provided, and these can also be arranged square or rectangular when viewed from above.
  • Such a filter device 1, or cleaning system 11 is, for example, stationary and can also function as a sewage treatment plant. However, it is preferably installed in a mobile manner, for example in a sailing ship, a trimaran would offer the process particular stability, and this water is taken up, cleaned and released again as it travels through the water. In this way, an algal bloom in seawater can be combated efficiently. Preferably comes here a substantial part of the energy required from a turbine drive, which is driven by the speed of the ship through the water. After the flowing water has passed the turbine and has released part of its kinetic energy to it, the water is fed to the actual filter device 1 or the cleaning system 11. A flowing or flowing body of water can also be cleaned by such a filter device 1.
  • Fig. 3 is a discharge device 6 with a fixed rake 13 or frame and a movable slider 12 Darge provides.
  • 3a is only intended to illustrate the two components of the carrying device 6 in individual representation.
  • 3b and 3c show the real working position, namely in FIG. 3b in the open position of the slide 12 and in FIG. 3c in the closed position of the slide 12 each relative to the fixed rake.
  • slide 12 and rake 13 each have a sawtooth profile offset from one another, but it can also be a wave profile or two linear profiles or other profile shapes inclined towards one another.
  • the slide can be moved back and forth, for example by means of an electric motor at the desired speed. By the movement of the slide 12, the surface 10 floating on the surface O is skimmed off so to speak and can be recycled.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un dispositif de filtration (1) destiné à filtrer des algues, des micro-organismes et similaires de l'eau, qui comprend une entrée (4), une chambre de filtration (2) à laquelle l'eau peut être amenée par l'entrée (4), une membrane de filtration (5) destinée à filtrer des algues, des micro-organismes et similaires, une sortie (6) destinée à l'eau filtrée et située au-dessous de la membrane de filtration (5), un moyen de gazage (7) destiné à amener un gaz à la membrane de filtration (5) et disposé entre la sortie (6) et la membrane de filtration (5), un agitateur (8) destiné à mélanger l'eau dans la chambre de filtration (2) et un dispositif d'évacuation (9) destiné à évacuer de la mousse (10) ou des impuretés à la surface (O) de l'eau dans la chambre de filtration (2).
PCT/DE2019/100970 2018-11-14 2019-11-12 Dispositif de filtration WO2020098878A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018128600.7 2018-11-14
DE102018128600.7A DE102018128600B4 (de) 2018-11-14 2018-11-14 Filtervorrichtung und Reinigungsanlage

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Publication Number Publication Date
WO2020098878A1 true WO2020098878A1 (fr) 2020-05-22

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CN111995014A (zh) * 2020-08-31 2020-11-27 江南大学 一种蓝膜和铁元素协同预防蓝藻水华形成的方法

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