Page 221 - Water and wastewater engineering

5-24 WATER AND WASTEWATER ENGINEERING

5-11 DISCUSSION QUESTIONS

5-1. A small batch coagulation plant did not receive the expected shipment of alum on
time. However, they have lime (CaO) available, if they could use it. Can they use it
as a substitute? Explain why or why not. Mention any safety precautions.
5-2. In Figure P-5-2 , identify design items that are either wrong or that are missing.

Batch meter

Type 304
stainless Flushing
connection,
typical

Pressure
transmitter
Quick
connect,
typical Bolted
manhole
Calibration reservoir
and valves, typical
Provide
cap for Pulsation dampener
Alum storage tank future and pressure gauge,
connection
typical
G
S G

Mixing pump Sample drain,
Flushing typical
Bulk chemical storage area
Utility water connection, typical

Operations building chemical feed room
FIGURE P-5-2