# Environmental engineering

Ottawa’s anaerobic digester produces 13 m^3/day of sludge with a suspended solids concentration of 7.8%. What volume of sludge must they dispose of
each year if their sand drying beds yield a solids concentration of 35%.

1. 👍 0
2. 👎 0
3. 👁 198

## Similar Questions

1. ### Health JUST NEED ANSWERS CHECKED :)

1. The two health-related components of fitness are muscular strengthand muscular endurance. True False 2. Circuit resistance training utilizes only aerobic energy. True False 3. The training program for muscular endurance should

2. ### College Algebra

A chicken farm ideally produces 300,000 eggs per day, but this total can vary by as much as 12,500 eggs per day. What is the maximum and minimum expected production at the farm?

3. ### Chem

A 25.0 mL aliquot of a well-shaken and filtered sample of river is pipetted into an evaporating dish. The sample was heated to dryness. Assume the density of the river water was 1.01g/mL. The following data were collected for

4. ### waste water treatment

ACTIVATED SLUDGE AND NUTRIENT REMOVAL =========================================== A wastewater treatment plant based on activated sludge with biological phosphate and nitrogen removal via pre-denitrification. The influent flow

1. ### College Algebra

A chicken farm ideally produces 300,000 eggs per day, but this total can vary by as much as 12,500 eggs per day. What is the maximum and minimum expected production at the farm?

2. ### science water treatment

wastewater treatment plant based on activated sludge with biological phosphate and nitrogen removal via pre-denitrification. The treatment plant consists of the following subsequent process units; screen, grit chamber, primary

3. ### Science

The influent flow (dwf) is 30,000 m3/day and the influent BOD concentration is 300 mg BOD/l. The suspended solid concentration in the influent is 150 mg/l of which 40% is removed in the primary clarifier, which agrees with about

4. ### material balance

In a process for concentrating 1000kg of freshly extracted orange juice containing 12.5 wt% solids, the juice is strained, yielding 800kg of strained juice and 200kg of pulpy juice.the strained juice is concentrated in a vacuum

1. ### Science

Physical properties used to indicate temperature changes include all of the following except a. color changes of liquid crystals b. volume changes of fluids and solids c. changes in electrical resistance d. odor changes in solids

2. ### physics

Two pianos each sound the same note simultaneously, but they are both out of tune. On a day when the speed of sound is 348 m/s, piano A produces a wavelength of 0.766 m, while piano B produces a wavelength of 0.780 m. How much

3. ### chemistry

the concentration of a chemical degrades in water according to order kinetics. the degradation constant is 0.2 day^-1. if the initial concentration is 100.0 mg/L, how may days are required for the concentration to reach 0.14 mg/L?

4. ### Science

For a given system, the influent substrate concentration is 470 g/m3 and the concentration of biomass in the aeration tank is 3000 g/m3. The substrate conversion rate is 2000 g/m3.d and the associated Volatile Suspended Solids