Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 370 - ILLINOIS RECOMMENDED STANDARDS FOR SEWAGE WORKS
Subpart K - TERTIARY FILTRATION
Section 370.1110 - Type

Current through Register Vol. 48, No. 12, March 22, 2024

a) Granular media filtration is considered to include the following type units:

1) High rate single, dual and multi-media of either the pressure or gravity type with facilities for backwashing.

2) Low rate sand filters dosed intermittently or periodically.

b) Low rate filtration is generally limited in use to small installations.

c) For miscellaneous considerations, refer to Section 370.203(j).

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