Page 208 - Water and wastewater engineering

Eccentric plug valve Isolation valve Strainer Backflow preventer To injection point Feedback signal transmitter

4

Pulsation dampener Sampling tap

Drain

2

Calibration column Utility water

1

10 cm vent Max level Load cell 3. Volume of enclosure around storage tank shall be 100% of liquid volume of tank 10% freeboard.

Liquid chemical storage

Sump Flow pacing—variable speed motor. Provide two in parallel. Magnetic flowmeter for monitoring (optional).
5 cm schedule 80 pvc fill line 7.5 cm over flow line Secondary containment enclosure 3 wall FIGURE 5-4 Liquid chemical feed system. Tanks, horizontal or vertical.

Notes:
4.
2.
1.
5-11