Abstract: A method for selectively removing micro-contaminants from sludge, the method includes a) providing sludge contaminated with micro-contaminants, and b) subjecting the sludge to a primary treatment step, thereby producing a first stream of primary sludge comprising a first part of micro-contaminants and a second stream of remaining sludge comprising a second part of micro-contaminants, c) subjecting the second stream of remaining sludge to a secondary treatment step, thereby producing biological sludge, wherein the first stream of primary sludge and the biological sludge are further subjected to separate treatment steps whose effects are coupled, so as to divert, capture and destroy the first part of micro-contaminants in the primary treatment step.

Abstract: A method for treating carbonaceous material, the method includes a) providing a first carbonaceous material CM1 contaminated with micro-pollutants and/or microplastics, and providing a second carbonaceous material CM2 free of micro-pollutants or microplastics, b) subjecting the first carbonaceous material CM1 to hydrothermal gasification in a HTG reactor, thereby producing an inorganic solid residue, a first gaseous fraction G1 comprising CH4, CO, CO2 and H2 and a filtrate F1 free of micro-pollutants or microplastics optionally containing readily biodegradable carbons such as VFAs, c) subjecting the second carbonaceous material CM2 together with at least part of the filtrate F1 to an anaerobic treatment step in an anaerobic tank, leading to a digestate free of micro-pollutants or microplastics and optionally a second gaseous fraction G2 containing CH4 and CO2. An installation for treating carbonaceous material is also provided.

Abstract: Disclosed is a method for treating water including: —an adsorption step which involves bringing the water into contact with a new adsorbant, the water being referred to as “pre-adsorbed water” before being brought into contact with the new adsorbant, and being referred to as “adsorbed water” after being brought into contact with the new adsorbant, and—a recirculation step which involves removing at least a portion of the new adsorbant brought into contact with the water during the adsorption step, the removed portion constituting a used adsorbant. During the recirculation step, the used adsorbant is brought into contact with the pre-adsorbed water. Also, the pre-adsorbed water does not undergo a clarification step that involves eliminating from the water at least a portion of the suspended matter that it contains. Also disclosed is a device for implementing such a method.

Abstract: Disclosed is a wastewater treatment process including at least one step of biological oxidation in a biological treatment unit, wherein ozone and an adsorbent compound are introduced, the ozonation and the adsorption each at least being induced upstream of the biological treatment unit, or else in the biological treatment unit, or else downstream of the biological treatment unit, knowing that downstream of the biological treatment unit at most either the introduction of ozone, or the introduction of the adsorbent compound is carried out. Also disclosed is a plant for implementing the process.

Abstract: A method for the treatment of effluents containing nitrogen in the form of ammonium, in which: a volume of effluent is introduced into the batch reactor in successive volume fractions, each volume fraction being treated during a subcycle, each subcycle including a phase of feeding with a volume fraction and, in an alternating manner, two treatment stages, i.e. an aerated first stage, during which complete or partial oxidation of the ammonium takes place to give nitrites, followed by a nonaerated second stage, during which the nitrites produced and the ammonium are converted to nitrogen gas. During the aerated first stage, the dissolved oxygen concentration in the batch reactor is maintained between 0.1 mgO2/l and 0.6 mgO2/l; the N—NO2:N—NH4 ratio is adjusted to be between 0.9 and 1.5 at the beginning of the nonaerated stage; and the nonaerated phase is carried out by deammonification, without the provision of carbon-based substrate.

Abstract: Method for the treatment of effluents containing nitrogen in the form of ammonium, according to which: a volume of effluent to be treated in a complete cycle is introduced into the batch reactor in successive volume fractions, each volume fraction being treated during a subcycle: each subcycle comprises a phase of feeding with a volume fraction and, in an alternating manner, two treatment stages, i.e. an aerated first stage, during which complete or partial oxidation of the ammonium so as to give nitrites takes place, followed by a nonaerated second stage, during which the nitrites produced and the ammonium are converted to nitrogen gas. During the aerated first stage, the dissolved oxygen concentration in the batch reactor is maintained between 0.1 mgO2/l and 0.6 mgO2/l; the N—NO2: N—NH4 ratio is adjusted so as to be between 0.9 and 1.5 at the beginning of the nonaerated stage; and the nonaerated phase is carried out by deammonification, without the provision of carbon-based substrate.

Abstract: The invention relates to a method for processing nitrogen-concentrated effluents by ammonia oxidation into nitrites followed by nitrite denitritation in a gaseous nitrogen in a sequential biological reactor (1) consisting in pouring a processable effluent volume in to the reactor by successive volume fractions, in dividing the entire processing cycle into successive sub cycles, wherein each sub-cycle comprises a feeding phase, an aeration phase for nitrification and an anoxia phase along which a carbon-containing source is introduced into the reactor for converting nitrites into nitrogen.

Abstract: The invention relates to a method for processing nitrogen-concentrated effluents by ammonia oxidation into nitrites followed by nitrite denitritation in a gaseous nitrogen in a sequential biological reactor (1) consisting in pouring a processable effluent volume in to the reactor by successive volume fractions, in dividing the entire processing cycle into successive sub cycles, wherein each sub-cycle comprises a feeding phase, an aeration phase for nitrification and an anoxia phase along which a carbon-containing source is introduced into the reactor for converting nitrites into nitrogen.