Apparatus for sedimentation of solid impurities from liquids

Claim 1

An apparatus for multistage continuous sedimentation and separation of solids from liquids, comprising in combination: A. an upright outer shell having a rectangular cross section, said shell bounding a hollow internal space; B. a cover removably closing said hollow internal space from the upper side; C. an oblique bottom closing said internal space on the opposite lower side, said bottom consisting of two sections, an upper section and a lower section, said sections meeting in a straight line with each other to form an obtuse angle the upper section of which is larger than the lower section; D. a plurality of inner bottoms substantially parallel to said outer bottom and conforming therewith, a. said inner bottoms dividing the internal space into a succession of separate compartments installed one above another, and b. each of said inner bottoms consisting, similarly like that outer bottom, of two sections, an upper section and a lower section, E. a plurality of baffles parallel to said upper section of the inner bottoms, a. said baffles overlapping, respectively, the lower portions of said upper sections in a vertically spaced manner so as to leave longitudinal gaps for interconnecting the adjacent compartments therebetween, each of said gaps having an inlet mouth and an outlet mouth; F. means for supplying the uppermost compartment with the contaminated liquid to be treated in the apparatus, said means consisting of a. a longitudinal tubular distributing means, said distributing means extending horizontally along the longest wall of the upright outer shell and being provided with at least one inlet socket for admitting the contaminated liquid thereto, b. a profiled shield surrounding said distributing means, 1. said shield having its upper edge fixed to said longest wall, while the lower edge thereof being spaced apart from said wall so as to leave a longituDinal overflow gap therebetween, 2. said shield and said longest wall bounding a liquid deflecting and gas releasing chamber round said distributing means; G. means for collecting and discharging the clarified liquid from the individual compartments, said means consisting of a. a horizontal overflow channel for withdrawal of clarified liquid from the uppermost compartment, said overflow channel extending transversely over the top part of said uppermost compartment, b. a plurality of elongated overfall means for withdrawal of clarified liquid from the next compartments, said overfall means being arranged in the uppermost parts of said next compartments, respectively, c. a plurality of draw-off tubes for discharging the clarified liquid from said overfall means, d. a collecting receiver adjacent to the top part of the uppermost compartment, in which receiver both the overflow channel and the draw-off tubes terminate, said receiver being further provided with an outlet socket; H. means for discharging the concentrated sludge from the lowermost part of each of the compartments.

Claim 2

An apparatus for multistage continuous sedimentation and separation of solids from liquids, comprising in combination: A. an upright outer shell having a rectangular cross section, said shell bounding a hollow internal space; B. a cover removably closing said hollow internal space from the upper side; C. an oblique bottom closing said internal space on the opposite lower side, said bottom consisting of two sections, an upper section and a lower section, said sections meeting in a straight line with each other to form an obtuse angle the upper section of which is larger than the lower section; D. a plurality of inner bottoms substantially parallel to said outer bottom and conforming therewith, a. said inner bottoms dividing the internal space into a succession of separate compartments installed one above another, and b. each of said inner bottoms consisting, similarly like that outer bottom, of two sections, an upper section and a lower section, E. a plurality of baffles parallel to said upper section of the inner bottoms, a. said baffles overlapping, respectively, the lower portions of said upper sections in a vertically spaced manner so as to leave longitudinal gaps for interconnecting the adjacent compartments therebetween, each of said gaps having an inlet mouth and an outlet mouth; F. means for supplying the uppermost compartment with the contaminated liquid to be treated in the apparatus, said means consisting of a. a longitudinal tubular distributing means, said distributing means extending horizontally along the longest wall of the upright outer shell and being provided with at least one inlet socket for admitting the contaminated liquid thereto, b. a profiled shield surrounding said distributing means, 1. said shield having its upper edge fixed to said longest wall, while the lower edge thereof being spaced apart from said wall so as to leave a longituDinal overflow gap therebetween, 2. said shield and said longest wall bounding a liquid deflecting and gas releasing chamber round said distributing means; G. means for collecting and discharging the clarified liquid from the individual compartments, said means consisting of a. a horizontal overflow channel for withdrawal of clarified liquid from the uppermost compartment, said overflow channel extending transversely over the top part of said uppermost compartment, b. a plurality of elongated overfall means for withdrawal of clarified liquid from the next compartments, said overfall means being arranged in the uppermost parts of said next compartments, respectively, c. a plurality of draw-off tubes for discharging the clarified liquid from said overfall means, d. a collecting receiver adjacent to the top part of the uppermost compartment, in which receiver both the overflow channel and the draw-off tubes terminate, said receiver being further provided with an outlet socket; H. means for discharging the concentrated sludge from the lowermost part of each of the compartments.