Abstract:
A Reactor (1) for solid phase synthesis comprises a vessel (2), a plurality of filters (3) arranged in the vessel (2) and a plurality of filtrate outlets (4) for evacuating the filtrate out of the filters (3). Each filter (3) is connected to one filtrate outlet (4). The reactor (1) comprises means (3, 4) for delivering a gas into the vessel (2) in a region of the vessel (2) near to the bottom (24) of the vessel (2) and beside the filters (3).
Abstract:
The invention relates to a filter device (1) for purifying polluted liquids, especially waster water, said device consisting of a plurality of interspaced filter elements (4) which form filter modules (3) and are rotatably arranged, in a circular or polygonal manner, in a container (2) containing the untreated liquid. Said filter modules (3) arranged in a circular or polygonal manner form a cavity (14) which is connected to the container (2) by means of a suction opening (12). A cleaning device for cleaning the filter elements (4) by means of purging air is arranged on and/or in the cavity (14). The invention also relates to a method for cleaning filter elements (4) pertaining to a filter device (1). According to said method, rotating filter elements (4) are cleaned by means of purging air during the operation of the filter device. To this end, the filter elements (4) are rotatably arranged in an interspaced and circular or polygonal manner, forming a cavity (14), in a container (2) containing the untreated liquid.
Abstract:
In one aspect, the invention is directed to methods and systems for filtering water using membranes. The methods and systems provide for controlling water levels in a tank with membranes immersed therein to control any of various conditions in the tank, such as the gas flow from aerators in the tank, the level of circulation of water in the tank, and the residence time of bubbles in the tank.
Abstract:
Methods and systems for filtration are disclosed. A feed mixture including at least one liquid component a flow of gas may he directed to a filter element and filtrate and gas may be passed through a filter medium from a feed fluid side to a filtrate side. The gas loosens and removes foulants accumulating within and on the upstream surface of the filter medium. The gas and filtrate may be separated from one another after passing through the filter medium.
Abstract:
A method and filtration module (5) for providing gas bubbles within an array of vertically disposed porous hollow membranes (6) to clean the outer surfaces of said membranes (6) when the array is immersed in a liquid by feeding (10) the gas bubbles into the array transversely of the vertical axis of the array. In one preferred form, the gas bubbles are retained within the array using a sleeve (11) surrounding the array (6) at least along part of its length.
Abstract:
A method and filtration module (5) for providing gas bubbles within an array of vertically disposed porous hollow membranes (6) to clean the outer surfaces of said membranes (6) when the array is immersed in a liquid by feeding (10) the gas bubbles into the array transversely of the vertical axis of the array. In one preferred form, the gas bubbles are retained within the array using a sleeve (11) surrounding the array (6) at least along part of its length.
Abstract:
A filter device has a filter housing, which is intended to contain a liquid to be filtered and in which at least one filter rod is arranged. The filter rod is composed of annular washers, which are arranged in a stack on a core formed with openings and which are so closely packed that particles in the liquid adhere to the periphery of the washers when the liquid is caused, from the outside, to pass between the washers into the core for filtration. The filter device has a gas supply member, which is intended to inject a gas flow into the liquid in the filter housing.In a method of cleaning a filter rod for filtering a particle-containing liquid in such a filter device, a gas flow is injected into the liquid in the filter housing so that a particle sock, which is formed on said filter rod of particles in the liquid, is detached from the filter rod and disintegrated.
Abstract:
1. TRICKLING FILTER FOR THE FILTRATION AND BIOLOGICAL PURIFICATION OF CONTAMINATED WATER COMPRISING, AT LEAST ONE WATER-TIGHT TANK CONTAINING FILLER MATERIAL CONSISTING OF WEAR-RESISTING MATERIAL HAVING A SPECIFIC GRAVITY OF NOT GREATER THAN 1, AND BEING IN THE FORM OF SMALL ELEMENTS EACH HAVING A GRAIN SIZE OF LESS THAN 6 MM, SAID TANK BEING PROVIDED WITH STORAGE DISTRIBUTOR DEVICES NEAR THE TOP THEREOF FOR DISTRIBUTING CONTAMINATED WATER OVER SAID FILLER MATERIAL, AND SAID TANK HAVING A BOTTOM WALL SLOPING TOWARD A DISCHARGE CHAMBER PROVIDED THEREBELOW INTO WHICH THE WATER PURIFIED AFTER HAVING TRICKLED THROUGH SAID FILLER MATERIAL IS DIVERTED, AERATION MEANS NEAR THE BOTTOM OF SAID TANK FOR AERATING SAID FILLER MATERIAL UPWARDLY THERETHROUGH WHILE THE CONTAMINATED WATER TRICKLES THROUGH SAID FILLER MATERIAL, MEANS NEAR THE BOTTOM OF SAID TANK FOR FILLING SAID TANK WITH RISING WATER UPWARDLY THERETHROUGH FOR CLEANSING SAID FILLER MATERIAL OF ANY SLUDGE OR MICROORGANISMS COVERING SAID ELEMENTS, THE INCOMING RISING WATER EFFECTIVELY BUOYING UP SAID FILLER MATERIAL IN SAID TANK, MEANS ON SAID TANK FOR CIRCULATING SAID FILLER MATERIAL WITH THE RISING WATER AND CONTAMINATED WATER WITHIN SAID TANK, MEANS ON THE SIDE WALL OF SAID TANK FOR THE REMOVAL OF THE SLUDGE AND MICROORGANISMS COVERING SAID ELEMENTS, GRID MEANS LOCATED ABOVE SAID BOTTOM WALL FOR PREVENTING SAID FILLER MATERIAL FROM DISCHARGING INTO SAID CHAMBER, AND FURTHER GRID MEANS IN SAID TANK ADJACENT SAID REMOVAL MEANS FOR PREVENTING SAID FILTER MATERIAL FROM BEING REMOVED THERETHROUGH.
Abstract:
A filter contains in a single housing a coarse granulation layer and at least one fine granulation layer down-stream from the coarse-granulation layer so that liquid to be filtered passes downwardly through the coarse layer and then through the fine layer and backwash means are provided for passing the backwash upwardly through the fine layer and then the coarse layer.