Mobile waste water and sludge treatment for hazardous and non-hazardous fluids

A self-contained transportable waste treatment apparatus comprising:

• a. an elongated, transportable, structural sled;
• b. a pair of mixing tanks mounted at one end of the sled for mixing a liquid volume contained therein, at least one of the mixing tanks having a flow inlet discharging into the bottom thereof, a hollow tube disposed vertically within the tank and surrounding the inlet, and means for circulating fluid into the tube so that it discharges from the top of the tube and then circulates around the outside of the tube in a direction which returns the fluid into the bottom of the tube to an area adjacent said inlet;
• c. means for supplying a waste stream containing a chemical enhancing the formation of floc to the mixing tanks through said flow inlet;
• d. a generally rectangular settling tank supported on the sled and defined by a plurality of walls extending up from the peripheral edge portion of the sled;
• e. conduit means connecting the mixing tanks with the settling tank for supplying supernatant liquid from the mixing tanks to the settling tank;
• f. means within the mixing tanks for recirculating fluid within the mixing tank;
• g. a plurality of vertically disposed sections with small spaces therebetween forming a baffle structure extending from the top to the bottom of said settling tank that is placed interiorly of the settling tank and generally transversely placed to the direction of flow through the settling tank and dividing the settling tank into at least primary and secondary sectors, said spaces allowing fluid flow therethrough and between the primary and secondary sectors to maintain a constant fluid level in said settling tank while enhancing floc size and solids deposition;
• and
• h. multiple sludge drawoff means supported by the sled and including multiple sections disposed at the lower portion of the settling tank respectively in the primary and secondary sectors thereof, each sector thereof being formed by two planar surfaces sloped toward the mid portion of each sector, and the upper portion of each planar surface intersecting respectively a side wall of that sector and a baffle, the lower portions of each planar surface communicating with a drain channel for removing settled solid material from the primary and from the secondary sectors of the settling basin in a lateral direction with respect to the direction of flow of fluid through the settling tank.