## How do you calculate chemical doses?

Table of Contents

Chemical Feeding

- Chemical used, lbs per day = Flow rate, MGD x chemical dosage, mg/L x 8.34 lbs per gallon.
- Chemical, lbs/day = (Flow rate, MGD)(chemical dosage, mg/L)(8.34 lbs/gal)
- Chemical dosage, mg/L = (Chemical, lbs/day)/(Flow rate, MGD)(8.34 lbs/gal)

## What is the pounds formula in wastewater?

Most operators in the water industry have put to memory the “Pound Formula” by multiplying the flow or volume of water in MG or MGD by 8.34 pounds per gallon and then by the dosage in ppm, the pounds of chlorine needed is calculated.

**How do I calculate the volume of an aeration tank?**

How to calculate Aeration Tank Volume? Hence O2 required 350/0.20 =1750 kg/day. one more point to be consider the Depth of aeration Tank, suppose it is 4 metre depth select 0.5 or 0.6 kg/cm² in blower side.

### How do you calculate chlorine ppm in water?

Parts per million (ppm) is calculated by weight. One ppm is equal to 1 pound of chlorine in 1 million pounds of water. One million pounds of water is approximately 120,000 gallons. Converting to ounces, (1 pound = 16 ounces) 1 ounce of chlorine in 7,500 gallons equals 1 ppm.

### What is chemical dosing in water treatment?

Chemical dosing is the adding of chemicals into water/fluid or sludge to achieve required conditioning. This would make the treatment effective by various mechanisms such as charge neutralisation, settling of solids etc.

**What is 8.34 in water treatment?**

The FLOW is what is coming into the plant or or from the primary clarifier and will be presented as MGD. 8.34 is always there – it is my conversion, it is a constant. * The bottom of this formula is talking about what is currently UNDER aeration (what is already in my aeration basin).

#### What is the LBS formula?

Pounds to Kilograms conversion table

Pounds (lb) | Kilograms (kg) | Kilograms+Grams (kg+g) |
---|---|---|

1 lb | 0.454 kg | 0 kg 454 g |

2 lb | 0.907 kg | 0 kg 907 g |

3 lb | 1.361 kg | 1 kg 361 g |

4 lb | 1.814 kg | 1 kg 814 g |

#### What is the Order of operations in water math?

WATER MATH ORDER OF OPERATIONS • Please (Parentheses) • Excuse (Exponents) • My Dear (Multiply or Divide) • Aunt Sally (Add or Subtract) A rule that tells you the sequence to follow when solving math problems

**Who is the moderator of water treatment math your moderator today?**

WELCOME! Water Treatment Math Your Moderator Today… Angela Hengel [email protected] 2 WELCOME! This training is presented by RCAC with funding provided by the California State Water Resources Control Board Division of Drinking Water (DDW)

## How do you calculate percent in water math?

WATER MATH Percents and Decimals • To change a percent into a decimal: drop the % and divide the number by 100 : 65% = 65/100 = 0.65 • To change a decimal to a percent: multiply the decimal by 100 and add a % 0.12 x 100 = 12% 15 WATER MATH ORDER OF OPERATIONS

## What are some good water math topics to learn?

Water Math Topics Today Expected Range of Knowledge Basic conversions Volumes Chlorination & chemical feed Detention time Filtration Velocity 9 10 What are we actually doing?