Apparatus for the purification of oily emulsions, solutions, and industrial waste waters
OwnerRalf F. Piephoinventor
Life of this patent
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Abstract
The invention relates to an apparatus for the purification of oily emulsions, solutions, industrial waste waters or the like. The apparatus includes a reaction container, at least one discharge connecting piece, an inflow trough and a band filter fitted with a fleece band, a filtrate container arranged under it and a sludge container provided at the discharge end of the band filter.
Claims13
In an apparatus for the treatment and separation of sludge from a liquid-sludge mixture, the apparatus including container means for receiving thereinto, and treating and mixing therein, a liquid-sludge mixture, and a conveyor means for receiving and transporting material discharged from the container means so as to effect air drying of the sludge;
- the improvement comprising, in combination:
- the conveyor means including a moving, endless, foraminous belt trained over laterally spaced rollers to provide an upper elongated belt course moving continuously during the drying of sludge from a first end toward a discharge end and a lower elongated belt course, below said upper belt course, returning from said discharge end to said first end;
- a napped filter strip, supplied from a source thereof to lie above the upper surface of the moving upper course of the endless belt, in a position to take on liquid-sludge discharged from the container means and to be held by the weight of said sludge against the upper course of the endless belt to be transported therewith;
- a laterally elongated, spreading trough means spaced above only a portion of the filter strip for discharging a lateral spread of liquid-sludge mixture under gravity onto only a portion of the filter strip when said filter strip passes beneath said trough means above the upper course of the endless, foraminous belt, whereby liquid filtrate from the mixture continuously passes through the filter strip as the filter strip moves toward the discharge end of said upper belt course, and a sludge residue, dried by the increasing absence of liquid in said liquid-sludge mixture, remains on the filter strip;
- an elongated filtrate-receiving container positioned to lie beneath the lower course of said endless belt, for receiving thereinto filtrate that has passed through the filter strip and through the courses of the foraminous belt;
- and the filter strip with dried sludge residue thereon being discharged from the discharge end of the upper course of the endless belt as said endless belt completes its transport of the filter strip along said upper course of the belt.
In a conveyor type filter that includes a pool of liquid-sludge mixture to be filtered, movable perforate conveyor means, a consumable sheet of filter medium means on the conveyor for movement therewith, and filtrate-receiving container means for receiving filtrate that passes through the filter medium;
- the improvement comprising, in combination:
- container means spaced and separate from said conveyor and said sheet of filter medium for providing a pool of liquid-sludge and permitting therein substantial separation by gravity of sludge from the liquid;
- the conveyor means being an endless, foraminous, continuously moving belt trained over laterally spaced rollers to provide an upper elongated belt course moving continuously from a first end toward a discharge end and a lower elongated belt course, below said upper belt course, returning from said discharge end to said first end;
- an elongated filtrate-receiving container positioned to extend beneath the length of the lower elongated perforate belt course to receive therein filtrate that passes under force of gravity through the filter medium and both said upper and lower belt courses;
- a source of napped filter strip arranged to feed from said source and to lie above the upper surface of said upper belt course and to move therewith, in a position to take on a mixture of gravity-separated sludge and liquid discharge from said pool within the container, the weight of the discharge from said pool providing means for holding the filter strip against the upper course of the continuously moving endless conveyor means to cause the filter strip and discharge retained thereon to move with said upper course of the conveyor means;
- and a laterally elongated, spreading trough means spaced above only a portion of the filter strip and arranged to receive gravity-separated liquid-sludge from the bottom of the pool in said container means and causing such sludge to spread laterally in the trough means and to then discharge by gravity onto only a portion of the filter strip adjacent the first end of the upper course of the conveyor means, whereby liquid will continuously drain through the filter strip and through both courses of the conveyor means to the filtrate-receiving container as the upper course of the conveyor moves continuously toward its discharge end, and the gradually liquid-freed drying residue is carried upon the filter strip from the point of receiving discharge from the spreading trough means toward said discharge end of the conveyor means.
Dependencies are inferred from the claim text.