The present invention can be included within the technical field of remineralisation of water for human use and consumption by adding carbon dioxide and lime. More specifically, the invention relates to a water remineralisation facility that equally allows precise control and reduction of turbidity in such a way as to reduce maintenance, decrease the use of reagents, and increase the lifetime of the components of the facility, in particular the membrane filtration system. The invention also relates to the associated water remineralisation method.
The present invention relates to a microbubble generating nozzle comprising a main body with a first water inlet in the upper portion thereof and a second controlled flow air inlet in a lateral recess of the lateral wall of the main body of the nozzle, as well as a gauge that is coupled to the lower portion of said main body and that forms a separation into which ducts open through which air and water circulate through the inside of the nozzle, the air comes into contact with the water and microbubbles are formed that subsequently are dispersed throughout the inside of a water tank at a water treatment facility.
The present invention relates to a microbubble generating nozzle comprising a main body 1 with a first water inlet 11 in the upper portion thereof and a second controlled flow air inlet 12 in a lateral recess of the lateral wall of the main body of the nozzle, as well as a gauge 8 that is coupled to the lower portion of said main body and that forms a separation into which duets open through which air and water circuíate through the inside of the nozzle, the air comes into contact with the water and microbubbles are formed that subsequently are dispersed throughout the inside of a water tank at a water treatment facility.
B01F 23/232 - Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
B01F 23/231 - Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
B01F 23/454 - Mixing liquids with liquidsEmulsifying using flow mixing by injecting a mixture of liquid and gas
B01F 25/21 - Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
Method for treating water by nanofiltration or reverse osmosis with a forward osmosis system as pretreatment, which comprises a control system by means of which the flow difference between the inlet and the outlet of the membrane at either of the two sides of the membrane is regulated by means of a system for adding a solution having an osmotic pressure lower or higher than the water to be treated.
B01D 61/00 - Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltrationApparatus, accessories or auxiliary operations specially adapted therefor
The present invention relates to a waste water treatment method characterised in that, in the aeration step, the concentration gradient of NH4 and N2O and/or NO with respect to time is measured at intervals of time, and the volume of air flow to the aeration tank is modified or maintained according to the values of the concentration gradients of said compounds over time.
The invention relates to a method for the elimination of nitrogen from wastewater, comprising the following steps: a) partial nitrification of the ammonium by means of autotrophic ammonia-oxidising bacteria; and b) anaerobic elimination of the inorganic nitrogen from the water obtained in (a) by means of autotrophic anaerobic bacteria; said method being characterised in that the autotrophic ammonia-oxidising bacteria of step (a) and the autotrophic anaerobic bacteria of step (b) are in the form of a biofilm on a support; and in that steps (a) and (b) are carried out in different tanks.
The invention relates to a process for eliminating microalgae from water, characterised in that the concentration of microalgae is greater than 500 microalgae/ml, comprising the steps of: a) adding activated carbon to the water containing the microalgae; and b) filtering the water from step (a) using an ultrafiltration membrane.
The invention relates to a device for controlling the level of sludge in lamella settlers, comprising an arm allowing the insertion of the control device into the sludge through the lamellae, a probe connected to the arm, comprising a light emitter, a light sensor facing the light emitter, and a window arranged between the light emitter and the light sensor where the sludge enters, and at least one indicator that indicates the level of sludge in the lamella settler according to the variation of the intensity of the light received by the light sensor.
The invention relates to a filtering cartridge (1) comprising a main body (2) with an upper lid (3) and a lower lid (4), the main body splitting into an outer filtering area wherein a pre-layer with diatoms or other filtering medium can be formed, and an inner safety area. In the inner safety area, there is a tube collecting filtered water (5), which comprises windows (12) for the passage of water or the chemical products and is surrounded by a layer of a first separating net (7), a filtering means (8) and a second separating layer (9). The lower lid (4) comprises openings (13) that match the lower end of the filtering means (8) via which the water or cleaning products used to clean the filtering medium (8) is/are discharged.
B01D 37/02 - Precoating the filtering elements or materialAddition of filter aids to the liquid being filtered
B01D 29/15 - Supported filter elements arranged for inward flow filtration
B01D 29/54 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
B01D 29/66 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
The invention relates to a very effective method for biological removal of ammonia, specifically applied to returning waste water from the draining of sludge in urban Waste Water Treatment Plants, by implementing ammonia, nitrite and nitrate sensors on the line, in a system that includes the following units: a holding tank in which waste waters are stored; an anoxic tank for pre-denitrification using an external source that contains carbon-biomass both in the biofilm and in suspension; an aerated tank for nitrification in the biofilm and in suspension and recirculation to the anoxic tank; and a sedimentation tank for the clarifying the effluent and recirculating the sludge, if applicable. The design of the system and the controllers are based on a calibrated model.
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