Using treated sewage water to clean trains, railway station

To clean one train, it takes 20,000 liters of water!

Rush Lane 2 May 2016: "Over two lakh liters of fresh water is being used every day to clean 20 trains in Chennai alone. With Indian Railways cleaning hundreds of trains every day, crores of liters of fresh water is being wasted on a daily basis. But, cleaning trains is equally important. So how to clean trains without wasting fresh water? Well, Chennai has an answer.

Basin Bridge Train Care Center is supplying treated sewage water to the Chennai Central Railway Station as they embark on a new strategy to save water. Main pipelines are laid for the transportation of water while branch carries the water to all platforms. This drastically reduces the amount of fresh water being used to..." read on.

Grey water recycling

EMPA: As the rainwater storage on the rooftop only covers drinking water usage, grey water treatment and recycling is implemented, as shown in Fig.3. Including shower, dishwashing and toilet flushing a total water use for 2 persons is calaculated to be about 105 L/d (including 18 L drinking water) (see Table 1). As black water (from toilet flushing, 15 L) is collected in a separate black water container, the grey water treatment has to be able to cope with about 90 L/d.

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Greywater systems: can they really reduce your bills?

The Guardian: Greywater recycling systems collect the water you’ve used in your sinks, dishwashers, showers and baths, and then clean it up and plumb it straight back into your toilet, washing machine and outside tap.

A system like this can reduce your water usage by about 50% so, if you switch to a water meter, you could potentially halve your water bills as well as reducing your water footprint.

Sounds like a neat way to address the problem of water shortages, doesn’t it? Then why isn’t everyone doing it? How much do these systems cost, how do they work in practice and which one should you get?...read on.

How flushing your toilet is helping to power homes in Milton Keynes

Anglian Water scheme helps to power thousands of homes in Milton Keynes

oneMK 30 October 2015: Every flush of your toilet is helping to power homes in Milton Keynes following a multi-million pound investment from Anglian Water.

During the past year the Cotton Valley Water Recycling Centre at Milton Keynes produced enough electricity to power 18,180 homes for a month – the equivalent of a town the size of Bletchley.

The power is produced from the treatment of sewage sludge, a by-product of the water recycling process. The sludge is treated in specialised vessels, a process known as anaerobic digestion, to high temperatures to kill off harmful bacteria meaning what’s left behind can then be used as a soil conditioner in...read on.

One Chinese City's Struggle With Water Scarcity

In the southern Chinese city of Shenzhen, water demand is expected to outstrip supply by 2020.
 

The Diplomat 16 September 2015: Shenzhen sits in subtropical south China, where four-fifths of the country’s water resources flow. The monsoon brings heavy rains from April to September; at its peak, Shenzhen’s more than 7 million residents see pouring rain almost every day.

So why is this city facing a serious water shortage?

Statistics from the government show that Shenzhen is among the top 10 most water-scarce cities in China, with per capita water resources one-twelfth of the national average. Residents had less than 160 cubic meters of water available per person in 2010, significantly lower than the United Nations’ definition of...read on.

A life devoted to reviving lakes

Eco-Business 27 October 2015: After seeing water that looked like “green paint”, Dr James Barnard resolved to devote his life to helping protect water resources and the communities that depend on them. For developing Biological Nutrient Removal technology, he became the fourth winner of the Lee Kuan Yew Water Prize in 2011. In an interview with Eco-Business, he shares how the work that he once viewed with ‘disgust’ eventually led to him finding his life’s purpose.

One Sunday in 1971, South African engineer Dr James Barnard heard over the news that one of the local reservoirs in the country was overflowing and decided to visit it.

“I saw what looked like green paint, dirty green pea soup spilling over the crest of the dam and plunging 35 metres onto the rocks below,” Dr Barnard tells Eco-Business. “Between 40 to 80 per cent of the flow to this reservoir were from...read on.

State of Hawaii looking to undergo $2M water recycling study for its airports

Pacific Business News 4 September 2015: The Hawaii State Department of Transportation, through its Airports Division, is looking to undergo a $2 million water recycling study at airports across the state, according to public records.

The feasibility study would include looking into the re-use of water, including water scalping technology at Honolulu International Airport, Kahului airport on Maui, Hilo International Airport and Kona International Airport at Keahole, both on the Big Island, according to a request for proposals released by the state...read on.

Key Issues Related To Desalination – Analysis

eurasia review 12 September 2015, By Dr. Gursharan Singh Kainth: Water is a source of life, and while the world has a total of 1.65 billion km3 of water only 0.3 percent of this total quantity is theoretically usable as fresh water, and only 10 percent of that i.e. 0.03 percent of the world’s water is capable of economical utilization.

Of the world’s water, 97.5 percent is salt water from its oceans. Only 2.5 percent is fresh water. Of that 2.5 percent, approximately 69 percent is frozen in glaciers and ice caps, leaving less than...read on.

ISS astronauts mimic nature to turn urine into drinking water

engadget 20 August 2015: Recycling water is key for astronauts on the International Space Station since sending water to the crew is heavy and expensive. The current systems work well and the tech is being used here on Earth in places where clean drinking water is in short supply. In an effort to increase efficiency, astronauts will test a new filtration system from Aquaporin Space Alliance. The so-called AquaMembrane employs nanotechnology and proteins to transform waste water (sweat and urine) into clean drinking water, proteins that regulate water in living things like human kidneys and bamboo shoots. Those aquaporin proteins are situated on a...read on.

Report forecasts water recycling market, water reuse growth to 2019

WaterWorld 7 August 2015: ReportsnReports.com, an online market research reports library, has released new research in "Global Water Recycle and Reuse Market 2015-2019" that segments the market based on technology (conventional water treatment techniques, membrane filtration, MBR technologies, and chemical treatment and disinfection technologies) and application (industrial, agricultural, and domestic and commercial).

According to the 2015 water recycling market research, growing water scarcity across the globe is a driver that is expected to bolster market growth. Likewise, growing population, increasing per capita consumption of water, and urbanization are the main reasons for the growing water scarcity worldwide. Also, the change in the climatic condition is expected to influence the water supply as it will alter the regional distribution of...read on.