Lesson 12 - Utilities Part 2 End of Unit SAQ

1.  *** You are building a new brewery and you have the following information:

• The water source is ground water.

• The iron level from the source water is extremely high.

• There are a lot of fine suspended particles in the water, as well as some volatile organic compounds.

• The pH is slightly low at 6.4.

• The water contains some microbiological contamination.

What water treatment technologies would you recommend in order to provide process (service) water?

2.  *** Your brewery’s air compressor and air receiver need to be replaced. What recommendations would you make to ensure that the electrical usage and maximum demand are kept at an absolute minimum?

3.  *** Your brewery requires nitrogen for a particular process. Compare the options available for supplying nitrogen to the plant, and make recommendations. What criteria would influence your choice?

The plant manager has confirmed that only gas is required, but they are expecting to use large volumes as it will be used for vessel top pressure and purging gas.

4.   ***

a) In one month, your brewery fermented 100 brews of 500 hL brewlength. Each brew had a fermentable range from 16 °Plato (1065.4 kg/m³) to a real extract of 1°Plato (1003.9 kg/m³). If your CO₂ recovery plant operates with a 50% overall collection efficiency, how much CO₂ would you have collected into storage?

b) Describe the various approaches, and plant as appropriate, for reducing oxygen levels throughout a typical CO₂ recovery plant.