water treatment 4 made #1

0.2% chlorine means

1 million pounds to 20lbs of chlorine

You put a sequestering agent before or after chlorine

Before

The purpose of a baffle is suppose to prevent

Short circuiting

3 log is

99.9%

Velocity through a clarifier should not exceed

0.5ft/min

What to add to prevent corrosion in pipes

Calcium

Does adding chlorine raise ph?

No

Potassium permanganate is added where

In reservoir

DBP

Disinfecting by products

Iodine is used for what

Emergency disinfection

Never store chlorine where

Around hydrocarbons

Chlorine can create what

And how to reduce it

DBP

Ammonia and chlorine

Or chlorine dioxide (sodium chlorite and chlorine)!

Who says you must disinfect your water

The state sanitary code

How often to calibrate a hypo chlorinator

Each shift

You want chlorine to leak as what

Gas

Not liquid

A building that says no smoking uses what disinfection

Ozone

Ozone requires

A gas prep unit and power source

It’s the strongest oxidant

PEL

Permissible exposure limit

IDHL

Immediate danger to life and health

Liquid to gas ratio chlorine

What’s the limits for it

1-450

1-460 test

PEL 0.5 ppm

IDHL 10pm

Chlorine is more effective at what

A lower ph and a higher temperature

Chlorine gas+sweat =

Hydrochloric acid

What pipe to use for chlorine

Steel pipe

Fusible plug melts at

159to 165 degrees FAHRENHEIT

Rotameter

Measured the flow of chlorine

chlorinator

Regulated the chlorine in a rotameter

Amperometric titration

Is the most accurate method for checking chlorine residual

Who is responsible for an emergency operations plan

Utility manager