Ice pigging is an efficient method to remove sediment from pipelines, for example in food-manufacturing plants. As the semi-solid ice slurry is pumped through the system, it scrapes the pipes and tanks to recover useable food product, rather than the organic material being lost in the effluent. Ice pigging has the huge advantage that the slurry can be driven around bends, through narrow passages, across heat exchangers, etc. Standard pigs (objects which dislodge solid material prior to cleaning with water and then detergents) can only be used across straight pipes. 

Leading by example...​

Energy savings, no extra cost!

• Energy audit revealed simple, effective measures
• 10-12 % energy savings

Plast Petter AB is a small Swedish manufacturer of plastic products mainly for use in offices. The products are cut, welded and glued together.

The company uses energy from oil and electricity, around 320 MWh and 550 MWh every year respectively.

An energy checkup carried out at the company revealed several measures that could yield positive results. These included:

Comprehensive environmental gains

Clean and lean water use

• Installation of drip-feed irrigation system reduces water consumption by 5 100 m3 and saves ~€ 7 000 per year
• Reorganising tank cleaning saves € 800 and cuts yearly water consumption by 1 200 m3

A winery located in Southeast Europe significantly decreased its water consumption through a clever rethinking of its irrigation and cleaning processes.

Comfort... hard to quantify but worth investing in

• Heat recovery saves money, improves working comfort in winter
• Resulted in annual savings of 218 MWh of heat (equivalent to over € 17 000) 

A company producing cables for electricity infrastructure located in the Czech Republic carried out a comprehensive energy audit resulting in several energy-saving measures. One of the proposals was to reuse waste heat from two production areas to warm adjacent halls.

Excellent recovery!

• Recovering heat saves on energy and cuts CO2
• Results in annual energy efficiency gains (~3.5 %) and less CO2 emissions (~600 000 kg)

Carlsberg brewery is an energy-savings front-runner in line with its mission to optimise production and reduce overall CO2 emissions and energy consumption costs. 

Push-button timers fit for shower time  

A push-button timer is a relatively simple technology for restricting the water flow of a shower to a designated length of time. Water stops running when the timer runs out, which prevents wastage. This reduces water utility bills and saves the environment.

How do they work? Push-button timers are a mechanical device (a pinhole within a diaphragm) that effectively closes the valve in the tap after around 30 seconds.

Result

Cistern displacement or dual flush? Your choice

Cistern displacement and dual flush are increasingly popular water-saving techniques. Authorities in many water-stressed places, for instance, are pushing this low-flush approach to safeguard a precious resource.

Dual-flush mechanisms are usually incorporated in new low-flush toilets, but may also be retrofitted to existing cisterns. These mechanisms have two buttons; one launches a full flush (e.g. 6 L) for solid materials; the other a half-flush (e.g. 3 L) for urine or liquids.