Project exercises

Laundry-Sustainability startpage

Best viewed with Microsoft Internet Explorer

This “project exercises” section is to apply your acquired knowledge in your laundry.


Please consult your superior before carrying out this exercises.



Module 1

Determine the fresh water source of your laundry

Determine the water hardness of your fresh water intake. If you have hard water, explain its treatment

Name the specifications of your laundry processing water. Check and describe the technologies which are used to meet this specifications

Name the legal requirements with regard to your waste water. Describe the  techniques which are used to meet these requirements

Determine the fresh water consumption of your laundry. Calculate the value l/kg for each machine and in total per day  


Module 2

Check if there is any overview over the machines in your laundry. If there is not, go into your laundry and create such an overview!

List up kind of laundry you wash in tunnel washers and which in washer extractors

Give an explanation for the reason that you use this different kind of washing machines. Find out if it’s possible to wash laundry you normally wash in washer extractors in tunnel washers also

List up which textiles are pressed, which are spinned and give the reasons-why. 

Determine residual moisture of different kind of textiles after pressing and spinning, respectively.

Check which machine leads to production limit in you laundry. Think about measures you could implement against this situation



Module 3


Measure the water hardness in your laundry

Measure the water consumption in your laundry per one shift. Calculate the total water consumption per week, per month, per year, per kg washed laundry

Measure or check the energy consumption in your laundry (electricity, steam etc.)

Determine the average unit consumption of water, energy per 1 kg of washed laundry



Module 4


Go into the laundry and list all detergents and chemicals being used in the washing machines. Include the following information: product name, size of packaging (e.g. 200 ltr drum) and which machines are receiving the product. You may be able to follow the pipework from the drums to the machines. If not ask the washman. Check if any products are also being dosed by hand.

Get copies of product safety data sheets for all products and note the pH of each product, what orange classification symbol (e.g. irritant, caustic, etc) is present and also the R and S code numbers. Go into the laundry and check whether the symbol and R&S numbers are shown on the label.

Go into chemical product storage area and count the number of pumps being used to dose liquid products. Write down how many pumps are being used for each product.

Go into the chemical product storage area and look for signs for the type of protective clothing that should be used. Can you then see this equipment (e.g. goggles, gloves, etc). If not ask the washman or manager where it is.

Go into the chemical storage area and find the main detergent being used. Look at the label on the sack (powder detergent) or container (liquid detergent) and write down how much carbonate, phosphate and silicate is in the product. Also note any other ingredients that are mentioned on the label.


Module 5

List the different kind of energy consumption (gas, oil, electricity) which are used in your laundry

Check how did energy consumption did change during the last years – total and per kg laundry?

Measure the waste water temperature in your laundry. Describe measures how to reduce the waste water temperature.

Go into your laundry and seek for “energy wasters”, such as leaking pipelines (steam, pressure-air), missing isolations, etc. Every laundry has saving potentials!



[Home] [Module 1  water] [Module 2 machines] [Module 3 washing] [Module 4 detergents] [Module 5 energy] [Module 6 spec aspects] [Help/Curriculum] [Project exercises] [Chat] [Examination] [Imprint]