Category Archives: water supply

Pulling Water out of Thick Air – The Vapour Inc PURE WATER GENIE

Earth

Earth from Space

Beduins in the Sahara, Mexico

Beduins in the Sahara, Morocco

 

While water covers 73% of the earth’s surface, clean water is, in many parts of the world, a scarce and expensive resource, and is increasingly becoming more scarce and more expensive. It is common in the eastern and central parts of the US, however, even here we experience water shortages. Frakking, coal processing, cooling nuclear power plants, and other industrial processes require clean water, and produce dirty water, and water shortages are predicted in 36 states over the next 5 years.

Yet water is in the air. It’s easier to pull water out of a river or a stream, or even out of the ground, where it exists in the liquid state, than to condense water vapor out of the air, but this is about to change. And water vapor in the air is cleaner than water on the ground.

The Vapour Inc Pure Water Genie ™ condenses water out of the air, and uses about 1 kwh per gallon, depending on humidity and air temperature. The units come in various sizes for personal or office applications to embassy scale sizes.

My friends at Vapour Inc, call it the “Pure Water Genie.” I would call it a “Cloud Machine,” or a “Box of Rain.”

Consider the American Embassy in Damascus, or Tehran, or a military base in Afghanistan. The Vapour Pure Water Genie is a source of pure water in hostile territory. If the American Embassy in Tehran had it’s own discrete and independent water supply back in 1979, our military could have been better able to secure the site. If remote military bases in various operating theaters have their own discrete and independent water supplies, then we don’t have to allocate resources to move water in hostile territory; our logistics positions are stronger. If we can pull water out of thick air, we don’t need to burn fuel or risk lives transporting it. If it’s coupled with a solar energy system then our embassies we don’t need fuel for generators in countries like Egypt, Iraq, Syria, Pakistan, Russia and China, which are either unstable, potentially hostile, have limited supplies of clean water, an unstable energy supply and distribution system.

The Vapour Genie uses electricity to pull water out of air without plastic and fuel used to bottle and transport bottled water. The water is chemical-free, with purity second only to distillation. This is unmatched by bottled water, and in some cases tap water. The six-stage filtration includes: Sediment, Sterilize, Carbon Block, TCR, UF, UV.  As fuel prices go up, so will the cost of transporting bottled water. As the costs of “disposing” and recycling plastics increases, so will the cost of bottled water. But while fuel prices and plastic recycling costs will go up, solar energy systems will be stable or drop due to advances in engineering. (See my post from Dec. 17, 2011, “Moore’s Law Applied to Solar Power,” here.)

The Pure Water Genies perform optimally in 70% to 80% humidity and temperatures between 75 F and 84 F (24 C and 29 C). We can’t control ambient humidity, but we can control temperature. In Kabul, Afghanistan, for example, in a controlled room with 78 F, the humidity will range from 33% in August to 77% in February. The Water Genie 5000 will produce 600 liters per day in August and 4650 liters per day in February.

These could replace water coolers in offices across the United States – and according to John at Vapour Inc., there are 12 million today.  And these could provide a secure water supply for our embassies and for service personnel on missions around the world.

 

Rebecca Boyle/Popular Science: capturing water from diesel exhaust

From Popular Science (PopSci.com),  New Condensation Tech Captures Drinkable Water From Diesel Exhaust, by Popular Science correspondent Rebecca Boyle

A new condensation process captures water from burning diesel fuel, and is so efficient that it could theoretically produce a gallon of water from a gallon of diesel, using lightweight materials. As an added bonus, the process removes contaminants, so about 65 to 85 percent of that water could be recovered for drinking water or other uses.

The system could also be used for other applications, such as capturing vapor from power plant exhaust or even adding weight to a new generation of dirigibles to help them land, the Register reports. The trick is a new inorganic membrane that uses capillary action to condense the water from the diesel’s exhaust. The diesel exhaust runs through a series of ceramic tubes, which contain microscopic pores. The pores suck up the water vapor, which passes through to the other side. MSNBC explains the process in more detail.

Original sources: The Register, Cosmic Log  and Wikimedia Commons (image).

Cholera still critical in Haiti

Sean Casey of the International Medical Corps, writing on November 7th, at the Poverty Matters Blog, a feature of The Guardian (UK).

I look forward to the day we can all celebrate the defeat of cholera in Haiti. Yet, one year after the first cases appeared, many in the international community are rushing to this conclusion too soon. Thanks to the efforts of NGOs and funding from international donors, such as the humanitarian aid department of the European Commission (Echo), case fatality rates have dropped significantly since the early days of Haiti’s cholera epidemic.

However, this success is fragile – indeed, since the end of August and the arrival of the rainy season, the number of cases has risen again, particularly in Haiti’s Sud department, where International Medical Corps (IMC) is the main cholera response agency. If NGOs are not adequately resourced to provide critical cholera prevention and treatment services, and to support the Haitian government in the areas where it is able to provide services, cases will rise and more people will die.

It is now a year since those first cholera cases emerged, and encouraging statistics have caused some donor agencies to declare the emergency phase over. But this remains an emergency that has only temporarily abated. If funding is cut and services closed, infection rates will rise and the relatively low fatality rates that have been achieved thanks to NGO interventions will quickly increase.

Cholera thrives where water systems are weak and sanitation poor. A history of poverty, natural disaster, neglected public water and sanitation systems, and under-resourced health infrastructure has magnified the impact of cholera in Haiti. It is estimated that 80% of Haitians do not have access to latrines and more than half of the population lacks access to safe drinking water.

The US government’s health and safety agency, the Centres for Disease Control and Prevention (CDC), has called these conditions a “perfect storm for a massive epidemic of cholera”. As of 14 October, about a year from the start of the epidemic, Haiti’s ministry of health reported 473,649 cases of cholera and 6,631 deaths attributed to it across all 10 of the country’s departments. Haiti is experiencing one of the worst cholera outbreaks in recent memory, and because this epidemic followed the 2010 earthquake and decades of political instability, it has limited capacity to mount a home-grown response.

We will only be able to declare victory over cholera when Haitians have access to toilets and safe water, the government has the resources and the capacity to manage cholera (and Haiti’s other health concerns) on its own and reliance on donor funding and NGO partners is no longer needed. Until then, donors and governments must acknowledge that cholera is still an emergency and respond accordingly. Haiti is like a patient on life support – if donors pull the plug now, the patient will not survive on its own.

Cholera in Haiti: still an emergency by Sean Casey of the International Medical Corps

Some of our earlier posts about  cholera:

Cholera in Iraq

Cholera outbreak(s) in Iraq – from Effect Measure

Three Cases of Cholera Confirmed by City Officials – NYTimes.com

 

BBC: mob seizes emergency water supply

From Mob takes emergency water supplies during Banbury shortages.  This isn’t inevitable – even in the absence of disaster planning and preparation.  But the converse proposition – that good planning and stockpiling would make this much less likely – seems reasonable.

A water delivery driver in Oxfordshire was forced to abandon his supply of emergency bottles after he was threatened by a group of residents.

The incident took place on Sunday after two Thames Water pumps at the Bretch Hill Reservoir in Banbury failed.
About 4,000 homes were cut off for 24 hours.
The company responded by supplying 68,000 bottles of water to the area. It said some residents had behaved aggressively and prevented deliveries.

‘Tough situation’

A spokesman for Thames Water said it was disappointed by a “minority for their selfish behaviour”.
The contractor concerned was outnumbered by a group who verbally abused him and refused to allow him to take his delivery to another part of the estate – physically removing the bottles from his truck.
The spokesman added they were grateful to the majority of affected customers for their patience and understanding but the behaviour of a few residents had “made a tough situation more difficult for everyone”.
The William Morris School, in Bretch Hill, was closed to pupils as a result of the water shortage which was fixed by about 18:00 BST on Monday.

 

2011 Invention Awards: From Waste To Water | Popular Science

Bjorn Carey, writing in Popular Science (print and on-line), describes a waste disposal system which relies in large part on existing boat engine heat to reduce human waste to water vapor and carbon dioxide.  From 2011 Invention Awards: From Waste To Water:

The exhaust of an idling engine is at least 550°F, which is hot enough to flash evaporate the waste and thermally oxidize the organic materials. Quite simply, the device can break down anything organic that’s put into it. The process eliminates all odors, Nassef says, and the main by-products are carbon dioxide and clean water vapor.How It Works: Zero Liquid Discharge: Waste flows from the boat’s toilet to an equalization tank, which breaks it into small pieces. The material next moves into the homogenizer, a container where it gets chopped into particles. The injector pump pressurizes the material and sprays it through a nozzle into the engine’s exhaust system, where the heat cleans it. Blanddesigns.co.ukNassef built a ZLD prototype in 2004 from washing-machine parts and a five-gallon paint bucket. The current version, his 11th update, uses only as much energy as ten 100-watt lightbulbs, sterilizes waste without any of the harsh chemicals of other portable toilet-waste-disposal systems, and can be scaled up or down. In 2007 it earned a certificate of approval from the U.S. Coast Guard for marine sanitation devices.Nassef is starting with boats, but the ZLD has the potential to work in just about any vehicle with hot-enough exhaust and a toilet. He’s drawn interest from RV manufacturers and the U.S. military, which often resorts to burning waste with jet fuel at a total cost of $400 per gallon at its forward operating bases. Another promising market is airlines, which could plug the ZLD into existing toilets, allowing some planes to shed up to 500 pounds of wastewater weight over the course of a flight.

via 2011 Invention Awards: From Waste To Water | Popular Science.

Not only is the development itself remarkable – but approval by the Coast Guard in three years seems pretty prompt.

Risks of plastic water containers

from a reader – and response – which suggests that we should refrain from using plastics as water containers – and at least in the context of pet water bowls – stick to glass.

via Wikimedia Commons

via Wikimedia Commons

Dr. Fox does not address stainless steel, or fabric-based bowls; we’ll attempt to follow up with him.

Two-Bit Dog – Dr. Fox’s website. The Washington Post – an excellent paper with a generally excellent website – doesn’t provide a link to Dr. Fox’s columns.

See also “Microwave Safe – Not!” from the the always-excellent PumpHandle, cross-posted by revere at Effect Measure.

Portable water container – from Toolmonger

Their focus, of course, is different from ours, but Toolmonger is an incredible site – often showing emergency response/reconstruction tools we’d never hear of otherwise. Here’s one the Rol-La-Tank: (or Fol-Da-Tank, which might be the company name, or the name of the product line). They’ve got both URL’s Foldatank.com and Fol-Da-Tank – this should give interested readers enough to find them.

Thanks to Benjamen Johnson of Toolmonger.

Hawaii to require solar hot water heaters in new residential construction

MetaEfficient reports that starting in 2010, Hawaii will require solar hot water heaters in new residential construction

Hawaii has become the first state to require solar water heaters in new homes. The bill was signed into law by Governor Linda Lingle, a Republican. It requires the energy-saving systems in homes starting in 2010. It prohibits issuing building permits for single-family homes that do not have solar water heaters. Hawaii relies on imported fossil fuels more than any other state, with about 90 percent of its energy sources coming from foreign countries, according to state data.

The new law prohibits issuing building permits for single-family homes that do not have solar water heaters. Some exceptions will be allowed, such as forested areas where there are low amounts of sunshine.

State Sen. Gary Hooser, vice chairman of the Energy and Environment Committee, first introduced the measure five years ago when he said a barrel of oil cost just $40. Since then, the cost of oil has more than tripled.

“It’s abundantly clear that we need to take some serious action to protect Hawaii because we’re so dependent on oil,” Hooser said. “I’m very pleased the governor is recognizing the importance of this bill and the huge public benefits that come out of it.”

Other Resources

Makezine – several recipes for DIY solar hot water heaters

Another recipe from Makezine

From the Sietch – a solar water heater

also suitable for distillation, purification, and possible boiling/cooking. Thanks to Sustainable Design Update for the link

What’s In Your Sewage? Liz Borkowski at The Pump Handle

Liz Borkowski at The Pump Handle

has an interesting discussion of sewage systems – she points out that

While most of sewage systems do a great job of making the water look clean and getting rid of bacteria and viruses, they often aren’t designed to remove synthetic chemicals. With so many of us dependent on daily doses of pharmaceuticals, we’re excreting lots of drugs (or their metabolites), and they’re sticking around in treated wastewater. Researchers are now starting to discover what that means for the environment.

What’s In Your Sewage? at The Pump Handle

And then, typically for The Pump Handle , follows up with well-sourced, calm discussion which will leave you better informed.

There may be long-term planning implications with respect to how we design sewage and filtration systems. We’re also reminded of the toxic soup post-Katrina – composed not only of sewage – but of every opened bottle of household cleanser, paint, insecticide, etc. which was on a floor low enough to have the water pass through. (I’ll try to update later with links to the post-Katrina water issues).


Cholera in Iraq

In mid-2003, the World Health organization reported on cholera in Iraq:

rom 28 April to 4 June 2003, a total of 73 laboratory-confirmed cholera cases have been reported in Iraq : 68 in Basra governorate, 4 in Missan governorate, 1 in Muthana governorate. No deaths have been reported.

From 17 May to 4 June 2003, the daily surveillance system of diarrhoeal disease cases in the four main hospitals of Basra reported a total of 1549 cases of acute watery diarrhea. Among these cases, 25.6 % occurred in patients aged 5 years and above.

Link.

Continue reading

New York Times: Study Finds Carcinogens near Canadian Oil Sands project

By  Ian Austen  in the Times on November 9th, “Study Find Carcinogens in Water Near Alberta Oil Sands Project,” more evidence of one of the myriad costs and risks that come with the use of fossil fuels:

OTTAWA, Nov. 7 — High levels of carcinogens and toxic substances have been found in fish, water and sediment downstream from Alberta’s huge oil sands projects, according to a new study.

The 75-page report, written by Kevin P. Timoney, an ecologist with Treeline Environmental Research, was commissioned by the local health authority of Fort Chipewyan, Alberta, where many residents say they believe the oil sands developments to the south are damaging their health.

Oil sands developments are generally vast open-pit mines that recover a form of tar mixed with sand. That tar, which is formally known as bitumen, is later separated and processed to produce oil. Most of the oil from the Alberta developments is sent to the United States.

Earlier studies by the province of Alberta had dismissed health concerns. And Dr. Timoney’s report, while highly critical of the government, does not make a specific link between the toxic substances and the oil sands. But many Fort Chipewyan residents did on Thursday.

“For years the community has believed that there’s lots of cancer,” said Donna Cyprien, health director of the Nunee Health Authority. “When they drank from the water, there was an oily scum around the cup. We now know there is something wrong.”

Mrs. Cyprien said that the local health board hired Dr. Timoney largely because it had lost faith in Alberta’s provincial health department.

Like Dr. Timoney, scientists who have reviewed his report say further studies are necessary to determine the cause and extent of the problem. But they also expressed concern about what his research had already found. “This could actually be worse, in some respects, than the Exxon Valdez,” said Jeffrey W. Short, a research scientist at the Alaska Fisheries Science Center who has studied the tanker accident that spilled 11 million gallons of oil off the Alaska coast in 1989.

Most disturbing, said Dr. Short, was the finding that from 2001 to 2005, concentrations in sediments of a group of chemicals called polycyclic aromatic hydrocarbons rose.

“These are substantial increases over and above the natural levels,” said Dr. Short, adding that the hydrocarbons “are notorious carcinogens,” found in tar and tarlike materials. In some cases, they were more than four times recommended limits in the United States. (Canada has no guidelines.)

Dr. Timoney concluded that the town’s treated drinking water was safe, but found high levels of arsenic, mercury and polycyclic aromatic hydrocarbons in fish, which many people in Fort Chipewyan, especially members of its Native community, rely on for a substantial portion of their diet.

In an e-mail message, Howard May, a spokesman for Alberta’s Department of Health and Wellness, said that the government could not specifically comment on the report because it had not received a copy.

“There is nothing really new in these allegations, we have been looking into them for some two years now,” Mr. May wrote, adding that the government investigation has found “no higher incidence of cancer in Fort Chipewyan than the rest of the province, and we stand by that analysis unless and until we are provided with further evidence.”

Oil, then -unless it’s being used at the well head – after extraction, it needs to be moved somewhere for refining – a process which carries its own risks – stored – and then transported down the supply chain towards end users.  And in each stage of this process, there are risks: in production (the article above provides an illustration). And in each mode of transportation, risks – of trucks overturning, pipelines accidentally or intentionally being ruptured, boats spilling their loads.

We don’t mean to make an argument against  any and all use of petroleum – but that one of the many benefits of reduced consumption (reduced greenhouse gases, reduced cost, reduced air pollution), is a reduction in risks and costs connected to production.

Frank Shorter’s advice on avoiding injuries running in the heat

From Frank Shorter’s October 12th Op-Ed, “Running Into Trouble,”

in the Times:

AT the 16-mile mark of a very hot and humid marathon at the Pan American Games in Cali, Colombia, in 1971, I looked over at my good friend and teammate Kenny Moore and noticed something. “You’ve stopped sweating,” I said, trying to sound calm. Kenny looked at his dry forearms, and then his eyes got very big. Ten minutes later he was in an ambulance, incoherent with heat stroke.

• Make salt packets available at the start of races that are dangerously hot. In this context, salt is a good thing.

• Strip down. At the expo before the Chicago race, I advised men to go shirtless and women to wear as little as possible in order to maximize the refrigeration effect of wind against sweaty skin. (Unfortunately, this time there would be no wind.) The elite runners have learned this. In Chicago, I would have gone shirtless, and explained to my sponsors later.

• Have showers and misters at every aid station. In Chicago, drinking water ran out after runners poured hundreds of thousands of cups over their heads.

•  Change the standard ambulance procedures so that only those truly in danger are transported. Doctors will tell you that dehydration can often be initially handled on the scene, but many ambulance protocols call for sufferers to be transported automatically to the hospital.

Continue reading

Cholera outbreak(s) in Iraq – from Effect Measure

Effect Measure reports and comments on cholera in Iraq. One of the main weapons against cholera is chlorine; chlorine is also usable as, and has in Iraq been used as, a weapon.

Cholera is expected to make its way to the capital by late September or early October. There is a shortage of chlorine because insurgents have used it as a weapon. Chlorine is extremely toxic and was used in World War I. as a poison gas. Since even rudimentary protection of water supplies doesn’t seem possible, the solution was to curtail chlorine imports. Instead we have cholera.

Cholera is primarily a waterborne disease that kills by sudden dehydration of its victims from a profuse, watery diarrhea. It can be prevented by simple disinfection of the water supply with chlorine and treated with oral rehydration. That neither of these can be readily accomplished in US occupied Iraq, where the occupiers expend $300 million a day to kill people, speaks volumes.

Link to post.

Effect Measure blog.