US PATENT SUBCLASS 210 / 919
.~ Using combined systems by merging parallel diverse waste systems


Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

918  DF  MISCELLANEOUS SPECIFIC TECHNIQUES {5}
919.~ Using combined systems by merging parallel diverse waste systems


DEFINITION

Classification: 210/919

Using combined systems by merging parallel diverse waste systems:

Collection of disclosures under collection 918 in which the output of two independent and different water treatment processes coact to effect a further treatment.

(1) Note. This subclass provides for such processes as (a) the combining of the effluent of two chemical plants one being acidic and the other caustic to produce an overall neutral effluent, (b) combining sludge or solid matter from a slaughter house sewage with the effluent from an electroplating plant whereby soluble heavy metals are removed from the effluent and pathogens are killed in the sludge, or (c) an effluent with a high BOD is merged with an effluent with a high concentration of chlorine and the BOD is thereby reduced.

(2) Note. A disclosure of merely discharging the effluent from several systems into a common stream is not sufficient basis for placement of a document in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

920, for a system in which parallel similar systems may be merged and treated in water steps as a single system.