Texas Administrative Code
Title 30 - ENVIRONMENTAL QUALITY
Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
Chapter 217 - DESIGN CRITERIA FOR DOMESTIC WASTEWATER SYSTEMS
Subchapter J - SLUDGE TREATMENT UNITS
Section 217.243 - Sludge Pipes

Universal Citation: 30 TX Admin Code § 217.243

Current through Reg. 50, No. 13; March 28, 2025

(a) Each pipe associated with a sludge processing unit must have a slope that ensures the flow of sludge.

(b) A pipe under a stationary structure must allow a blockage to be easily eliminated by rodding or a sewer-cleaning device.

(c) A gravity pipe must have uniform grade and alignment.

(d) The slope of a gravity discharge pipe must not be less than 3.0%.

(e) The minimum diameter for a pipe associated with sludge processing is shown in Figure: 30 TAC § 217.243(e):

Attached Graphic

(f) The available head on a discharge using a gravity withdrawal pipe must be at least 4.0 feet.

(g) A gravity withdrawal pipe from a clarifier must allow for the removal of sludge.

(h) Each sludge pipe must include a means to observe the quality of the supernatant from each of the withdrawal outlets.

(i) Each individual sludge processing unit must have a dedicated means of dewatering.

(j) Pipes located inside a digestion tank must be designed for use in corrosive environments and must be sufficiently supported to prevent damage to the pipe or adjacent equipment.

(k) A sludge pipe must not contain any bends that form an acute angle with the pipe.

Disclaimer: These regulations may not be the most recent version. Texas may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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