What is required when recycling water from a backwash reclaim tank?
• The tank must be constructed in accordance with the requirements for finished water storage tanks in the 10 State Standards for Water Works, part 7. • A minimum horizontal separation distance of 50 feet must be provided between any part of the tank and buried sewer. • The sludge waste from the tank must discharge to the sanitary sewer through an air gap. The discharge point must be located at least 50 feet away from any part of the tank. • The volume of the tank should be sized to hold water from at least 1.5 to 2 backwashes. • If a wash down system is installed, the water supply for the wash down system must be equipped with an approved backflow prevention device. • It is recommended that more than one tank compartment be provided. Can plumbing fixtures such as toilets, lavatories, or mop sinks be installed in a treatment plant? Yes, but only if the following requirements are met: • Two separate waste systems are required: one for sanitary soil wastes and one for “grey water” wastes
