Importance

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Abstract

Apparatus for purifying water containing material dissolved and/dispersed therein. The apparatus comprises an upflow reactor in which, while maintaining a sludge blanket, the water to be purified can be contacted with one or more agents bringing the dissolved and/or dispersed material into a form in which it can be separated from the water; means for the discharge of the purified water from the apparatus; and an influent distributing system to be connected to a central water supply system. The influent distributing system includes a plurality of tube members assembled to form one or more strings. The strings have outlet openings through which the water to be purified can be introduced into the reactor space at a plurality of spaced locations. The strings are unbranched within the reactor, the ends of the strings remote from the end of supply of the water to be purified to the influent distributing system are provided with openable shut-off means, they are disposed outside the reactor space and are closed during operation. According to the present invention, the direction of outflow of the water to be purified, defined by the outlet openings, is obliquely downward.

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First Claim