摘要:
The invention relates to a method and a device for purifying liquid effluents, in which water is separated from substances by performing, in a single vertical enclosure (3), a vertical bubbling in the effluents fed at a flow rate d. The enclosure has a free surface and includes at least two compartments (4, 5, 6, 7) communicating together for enabling a circulation between the compartments successively from the top to the bottom and from the bottom to the top between the lower portion thereof and a medium level at a flow rate D at least three times higher than the flow rate d. The supernatant phase is continuously discharged and a hydraulic or gaseous chemical oxidation of said effluents is simultaneously carried out in the same enclosure, the chemical oxidation rate and the bubble flow rate and size being selected in order to progressively obtain a separation of the solid/liquid and liquid/liquid phases at the surface of the enclosure for obtaining a COD below a predetermined threshold.
摘要:
La présente invention concerne un procédé, un dispositif (1) de traitement et de conditionnement de boues liquides (2), et une galette de boue solidifiée obtenue avec un tel procédé dans lequel on alimente avec la boue une enceinte (5, 6, 33, 52, 83, 117, 132) en flux continu en y injectant simultanément de l'air entraînant une vitesse V de l'émulsion obtenue à l'emplacement (84, 117, 133) de la rencontre entre l'air et la boue telle que V > 10m/s, on crée une perte de charge déterminée dans l'émulsion par rétrécissement (97, 140) dans et/ou en sortie de l'enceinte, on injecte un floculant (98, 123) après un tel rétrécissement, on dégaze (95, 124) ladite émulsion à la pression atmosphérique, on concentre (128, 166, 180) en aval les boues en ligne dans un récipient déversoir et on récupère l'ensemble dans un dispositif (25, 48) de filtration ou de décantation.
摘要:
The invention relates to a method and to a device for scrubbing liquid effluents laden with dissolved or undissolved organic and/or inorganic substances and continuously fed at a flow rate Df. After a preliminary effluent-floating operation if required, the method comprises carrying out at least one treatment cycle, the treatment cycle including a first step in which the effluents are subjected to an electrolytic treatment by circulation in a first compartment while generating a very strong turbulence, followed by a second step in which the undissolved elements contained in the effluents are agglomerated by coagulation/flocculation before circulating the effluents in a second free surface compartment, with the scraping of the sludge carried out at the upper portion, while bubbling and maintaining a reduced turbulence in said second compartment.
摘要:
The invention concerns a method and a device (1) for treating and conditioning liquid sludge (2), and a solidified sludge cake obtained by said method, wherein a first emulsion (14) of sludge is formed in an in-line container (5, 6) fed at a first flow rate Q (m3/h), owing to the impact of the sludge with air (13) injected into the container at a rate Q'(Nm3/h), where Q' > 5Q, in a first region (8) which has a small volume of less than 0. 05 m 3 , in order to produce the first emulsion (14), which is then transferred into a second region (16) of the container extending over a first specific length L 1 , and is then discharged via a component which generates a head loss (18) in a chamber (19) extending over a second specific length L 2 . At least one flocculant (22) is injected, in order to obtain a second, coagulated, emulsion (23), which is at least partially degasified. The matter in suspension in the second emulsion (23) obtained in this way is then filtered or decanted.
摘要:
The invention concerns a method and device for the continuous treatment of a flow of organic liquid sludge. Following the optional addition of granular mineral matter to the flow, the sludge (5) is injected at a rate q into a column of air which is at overpressure relative to atmospheric pressure, the air column circulating at a rate Q > 5q in a chamber (2, 4) extending over a specific length L along a longitudinal axis (3), in order to create a fluidized bed, in which the sludge is aerolized, between air supply piping upstream of the sludge injection and an outlet reservoir or duct downstream of the resulting fluidized bed, the duct or reservoir being at atmospheric pressure or substantially at atmospheric pressure, and a flocculant (21) is introduced continuously downstream of the chamber into the fluidized bed in order to aggregate the organic matter before the solid part obtained in this way is separated from the liquid part, the resulting solid part thus being deodorized.
摘要:
The invention relates to a method for separating the liquid part from the suspended matter in a sludge supplied in a continuous flow at a flow rate of Q EB = V/hour. The flow is divided into at least two partial flows which are sprayed on top of one another into a sealed chamber of volume v