Texas Administrative Code
Title 30 - ENVIRONMENTAL QUALITY
Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
Chapter 217 - DESIGN CRITERIA FOR DOMESTIC WASTEWATER SYSTEMS
Subchapter G - FIXED FILM AND FILTRATION UNITS
Section 217.189 - Dual Treatment Systems Using Submerged Biological Contactor
Current through Reg. 50, No. 13; March 28, 2025
(a) A submerged biological contactor (SBC) may be used in conjunction with other treatment systems.
(b) An SBC may be used as a roughing unit, as described in § 217.182(b)(1) of this title (relating to Trickling Filters--General Requirements), in series with activated sludge.
(c) SBC units may be installed in existing activated sludge basins to create a combination of fixed and suspended growth processes.
(d) If a dual treatment system employs an SBC, the engineering report must include supporting data, calculations, process descriptions, and vendor information to describe how the proposed dual treatment system will provide the required treatment levels.
(e) These designs may be subject to the requirements of § 217.7(b)(2) of this title (relating to Types of Plans and Specifications Approvals).
