What Is Grey Water?
Waste water that is generated from baths, showers and handwash basins and can be recycled for other uses such as WC flushing is referred to as grey water. The term grey water can also apply to waste water created on an industrial scale, such as waste water from specific production processes or discharge from cleaning processes.
What Is The Difference Between Grey Water And Black Water?
Unlike black water, grey water contains no sewage. Black water (sometimes referred to as brown water) often comes from WCs, and generally contains bodily wastes, hence why it requires more intensive treatment. Grey water, which in a domestic context is more likely to come from laundry and dishwashing, has lower levels of contaminants compared to black water, which can make it easier to treat and recycle. When collected correctly, grey water can be recycled directly within a process.
The status of grey water is between black water, which contains sewage, and white water, which is fresh, portable water.
How Can Grey Water Be Recycled?
Domestic grey water can be collected and re-used or stored using a separate plumbing system. If grey water is stored rather than used immediately, then it must be used within a short period of time, as it can start to putrefy because of organic solids in the water. While grey water is not safe to drink, it can be used to provide water for washing, toilet flushing, and garden watering, after stages of filtration.
There are also a range of water recycling systems can be used to treat and recycle grey water on a larger, industrial scale.
Why Is Grey Water Recycling Important?
Grey water recycling and treatment can help a considerable amount of water from being wasted, and can also help to reduce costs and energy consumption. With the rising price of water, the importance of recycling water will become increasingly apparent. Grey water recycling is not just an environmental responsibility; it can also offer substantial long term savings in water supply and drainage costs.
ELGA Process Water Can Help You With Grey Water Recycling
Our industry experts at ELGA Process Water can consult and advise on all aspects of water consumption, including recycling rainwater, recovering boiler blowdown, and more. We also offer a range of equipment that utilises water recovery systems to recycle water.
If you want to find out how much you can save by incorporating recovering water as part of your process, try using our online calculator, where you can enter your information and create a water cost savings analysis.
Contact us today for more information about grey water recycling.