Suez Environnement

Ondeo Services

Suez Groupe

Gilles Carrand

Jean-Marc Audic

Chrystelle Langlais

Luca Ramoino

Patrice Chatelier

Laurent De Franceschi

Walter Uttinger

Apparatus for clarifying a sludge-containing effluent, comprising a clarification basin (), at least one arm () able to move over the upper surface of the liquid in the basin; at least one trough () supported by the arm so that it can be immersed over part of its height in the liquid of the basin, suction tubes (T, T) held relative to the trough, each tube comprising at the top a vertically adjustable sleeve (B, B) opening into the trough, and a means of removing sludge from the trough; the sleeve (B, B) of at least one suction tube (T, T) is free to slide vertically relative to the mobile arm () supporting the trough, and to the tube (T, T) and a reserve of buoyancy necessary and sufficient for keeping the overspill end (E, E) of the sleeve in the trough () continuously out of the water is installed on the sleeve (B, B) so that the overspill level of the sleeve adjusts automatically in relation to the level () of liquid and sludge in the trough.

Apparatus for clarifying a sludge-containing effluent

The invention concerns a method for regulating a wastewater or sludge treating plant. Ponds and cells provided with aerating means are used for eliminating carbonaceous, nitrogenous, and phosphate pollutants. The invention is characterized in that an automaton uses periods during which the plant is underloaded to impose on it abnormal operating conditions. The automaton analyses the response of the plant to the abnormal operating conditions to simulate and optimize the plant operating parameters for heavy-load periods, by automatically adjusting the parameters of the automaton logic.

Self-adaptive method for regulating an effluent treating plant, in particular for waste water

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Sartrouville, France

Gilles Carrand