(a) Supernatant, filtrate, or centrate resulting from sludge processing must be returned to the headworks of the wastewater treatment facility, the influent lift station, or to a point preceding an aeration system or secondary treatment unit.
(b) A sludge processing unit must limit digester supernatant liquor volume to the greatest extent practicable.
(c) Returned supernatant, filtrate, or centrate from a sludge processing unit must not interfere with wastewater treatment processes in another treatment unit.

Source Note: The provisions of this §217.242 adopted to be effective August 28, 2008, 33 TexReg 6843; amended to be effective December 4, 2015, 40 TexReg 8254