Tag: treatment

Questions About New Water Disinfectant

  • Karen Lukacsena owns an aquarium store outside of Pittsburgh. She's recommending that customers filter their tap water. This is because Chloramine, a new chemical more utility companies are using to purify water, kills the fish (and could be toxic to humans, too). (Photo by Katherine Fink)

The way your tap water is disinfected might be changing. Federal regulations to improve water safety are leading water utilities to switch the kind of chemicals they use. But Katherine Fink reports one of those chemicals might do more harm than good:

Transcript

The way your tap water is disinfected might be changing. Federal regulations to improve water safety are leading water utilities to switch the kind of chemicals they use. But Katherine Fink reports one of those chemicals might do more harm than good.

Elmer’s Aquarium has tanks and tanks of fish.

“These are all freshwater; these fish come from all over the world.”

Karen Lukacsena is the Vice President of Elmer’s Aquarium here in a suburb of Pittsburgh.

“Elmer’s has been here for 40 years, and Elmer was my father.”

A lot has changed since Elmer started the business. For instance, there are different products that purify tap water for aquariums:

“Because we don’t really know when someone comes in here what their water’s treated with–whether it’s chlorine or chloramine. And they can always call and check, but to be safe, we just think everyone should go ahead and treat their water.”

Chlorine poisons fish. But if you set water out for a few days, the chlorine will dissipate. Chloramine is different. It’s what you get when you mix chlorine and ammonia. And it does not dissipate. It sticks around.

That’s one reason drinking water providers like it. Paul Zielinski is with Pennsylvania-American Water:

“We don’t see the decay through the distribution system reaching our furthest customers like we do with chlorine; it tends to stay longer in the system and provide a higher disinfectant level, if you will.”

That means even if the water stays in the underground pipes for a long time, chloramine will still be doing the job, disinfecting the water. Until recently, only about one-fifth of water providers used chloramine. Soon, two-thirds of them might be using it. That’s because of new federal rules that take effect in 2012. The Environmental Protection Agency found when organic matter—such as vegetation—mixes with chlorine, it increases the risk of bladder cancer and reproductive problems. So Zielinski says water providers like his are being ordered to limit that risk:

“So one of the ways to do it is obviously to switch from chlorine, which generates these byproducts, to chloramines, which doesn’t.”

But all disinfectants have their downside. For one thing, chloramine corrodes lead and copper pipes. Many water providers add other chemicals to prevent that from happening. But a few years ago, when Washington D.C. switched to chloramine, lead got into the water. Lead is toxic. It can cause learning disabilities. So much lead got into the tap water that researchers believe some young children lost IQ points.

The EPA’s regulatory arm says chloramine’s safe. But an EPA chemist, Susan Richardson, says she’s not so sure:

“Personally, as a private citizen, I would be a little bit concerned myself, and might have a filter on my faucet.”

Richardson’s research found that chloramine also creates byproducts in drinking water. And those byproducts appear even more toxic than the ones created by chlorine:

“I’m really hoping that some of the toxicologists at EPA carry this further to really help us assess that.”

“And in the meantime, we’re going to be drinking this water.”

Susan Pickford is an attorney who doesn’t want her town’s water to be disinfected with chloramine.

“Bathing in it, using it in cooking, and exposing ourselves to huge toxins until the EPA gets around to regulating them.”

Pickford is fighting plans to use chloramine in her central Pennsylvania town. She says there’s a better way to reduce toxic byproducts, and no one’s talking about it: filtering the water.

“If they could filter, and they can, there is filtration available that would help them filter 70 to 80 percent of those organics out of the source water, then when the chlorine cleans the water, it wouldn’t be creating all these byproducts.”

But better filtration systems are expensive. And utilities say water bills would go up for customers. That’s not popular. So they say it’s a matter of customers deciding how much of a risk they’re willing to take, and how much they’re willing to pay.

For the Environment Report, I’m Katherine Fink.

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Acupuncture for the Masses

  • Some consumers choose alternative treatments, like acupuncture, because they want a smaller environmental footprint from their medical care. (Photo courtesy of the National Institutes of Health)

Acupuncture has been used as a medical treatment in Asia for thousands of years. It’s catching on in this country, but it can be pricey. Now a new kind of low-cost acupuncture clinic is springing up with a goal of bringing acupuncture to the masses. As Ann Dornfeld reports, this new type of clinic might just be healthy for the planet, too:

Transcript

Acupuncture has been used as a medical treatment in Asia for thousands of years. It’s catching on in this country, but it can be pricey. Now a new kind of low-cost acupuncture clinic is springing up with a goal of bringing acupuncture to the masses. As Ann Dornfeld reports, this new type of clinic might just be healthy for the planet, too:

Esther “Little Dove” John is lying on a treatment table with the same blissful smile as someone who’s just had a massage. Except she’s about to get stuck with a couple dozen needles.

“Anything in particular you want to focus on today?”

“I have tingling in my fingers and numbness in the toes.”

Acupuncturist Jordan Van Voast taps fine steel needles into John’s hands; then her stomach, her legs, and her ears.

“All of a sudden, my body just relaxed.”

This would be a typical scene from an acupuncture clinic. Except the recliner that serves as John’s treatment table is just one in a circle of ten. It’s a treatment model called “community acupuncture.”

Jacque Larrainzar is getting treated in a chair across from John. She used to go to a standard acupuncture clinic with private rooms. But she prefers the communal style of this Seattle clinic, called – wait for it – “CommuniChi.”

“The feeling is very different. Seeing other people relax and just giving themselves the opportunity to heal is, in itself– I think it helps you to focus on yourself and heal.”

Community acupuncture clinics are designed to make acupuncture affordable to people at all income levels, regardless of insurance. Patients pay a sliding scale fee – as little as 15 dollars per treatment. It’s 60 dollars or more at a standard acupuncture clinic. Community acupuncture keeps costs down through low overhead: using one treatment room and recliners cuts down on electricity and laundry costs. And CommuniChi co-owner Serena Sundaram says that also means a smaller environmental footprint.

“All of those things are really different even than a regular acupuncture clinic, which is already a smaller footprint than a Western practice.”

You don’t need big, high-tech equipment for acupuncture or even electricity — just a place to lie down and a handful of tiny needles.

Patient Esther “Little Dove” John says she’s glad that acupuncture doesn’t involve pharmaceuticals.

“If I were using the mainstream treatment for my condition, I’d be expelling those chemicals into the environment and the fish would be taking it and the birds would be drinking it.”

Scientists have found high levels of pharmaceuticals in the water downstream from water treatment plants. They’re worried about the effect on fish.

Emily Wong is a physician at the University of Washington Medical Center. She practices Western medicine, but also studied acupuncture. Wong says there’s extensive evidence that acupuncture helps with a lot of health problems where Western medicine falls short, like headaches, back aches, and nausea.

But, she says acupuncture is no panacea. She says some acupuncturists claim to be able to treat conditions like kidney stones without scientific evidence to support their claims.

“I see it as being more similar to, for example, physical therapy as a modality that treats many conditions quite well, and as an alternative to a surgical approach or perhaps a pharmacological approach to some conditions.”

If acupuncture works as well or better than a stay at the hospital or a prescription of drugs, it could have a lot lower impact on the environment. And if the new community clinics bring more people to acupuncture, it’s possible the earth will get a little relief too.

For The Environment Report, I’m Ann Dornfeld.

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Prop 2 to Give Animals More Leg Room

  • By 2015, Proposition 2 in California forces farms to make sure the animals are given enough room to move around. (Photo by Kinna Ohman)

Voters in California are drawing
a line in the sand when it comes to the
factory farming of animals. They overwhelmingly
approved a ballot measure to ensure that
hens, calves and pigs are treated more
humanely. Julie Grant reports:

Transcript

Voters in California are drawing
a line in the sand when it comes to the
factory farming of animals. They overwhelmingly
approved a ballot measure to ensure that
hens, calves and pigs are treated more
humanely. Julie Grant reports:

Right now, in most states, calves raised for veal, pregnant
pigs, and hens that lay eggs are caged so tight they can
barely move.

By 2015, Proposition 2 in California forces farms to make
sure the animals are given enough room to move around.

Michael Markarian is a vice president with the U.S. Humane
Society, which spent millions to get the issue approved.

“You cram these animals into cages barely larger than their
bodies. They’re practically immobilized their entire lives. I
mean, what could be more basic than giving an animal some
freedom of movement?”

Opponents of the issue say this will cost farmers and
consumers. We’ll see more imports from countries that don’t
have these kinds of laws.

For The Environment Report, I’m Julie Grant.

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Green Fuel From Green Slime

  • Roger Ruan directs the Center for BioRefining at the University of Minnesota. He's experimenting with algae that grow quickly in the nutrients in wastewater. He says the oil-rich algae are a potential source of biodiesel. (Photo by Stephanie Hemphill)

When people talk about bio-fuels,
they usually mean ethanol from corn or diesel
fuel from soybeans. But there are lots of
possibilities. One of them is algae. Algae
contains a lot of oil. The US Department of
Energy experimented with algae for nearly
twenty years after the oil crisis of the 1970s.
But with fuel prices so high, scientists around
the world are looking at algae again. Stephanie
Hemphill reports one researcher thinks
he’s figured out how to grow lots of algae, fast:

Transcript

When people talk about bio-fuels,
they usually mean ethanol from corn or diesel
fuel from soybeans. But there are lots of
possibilities. One of them is algae. Algae
contains a lot of oil. The US Department of
Energy experimented with algae for nearly
twenty years after the oil crisis of the 1970s.
But with fuel prices so high, scientists around
the world are looking at algae again. Stephanie
Hemphill reports one researcher thinks
he’s figured out how to grow lots of algae, fast:

Roger Ruan has been trying for years to figure out how to turn algae into diesel,
economically. He’s the director of the Center for BioRefining at the University of
Minnesota.

Ruan says there’s no question it can be done; some people are already producing algae
oil. They’re growing it in open ponds. It’s used for pharmaceuticals, food supplements,
and cosmetics.

“Right now, based on an open pond system, per acre per year, you can easily get 5,000
gallons of oil, and soybean would probably give you 50. That’s 100 times difference.”

So algae can be far more efficient at producing diesel fuel than soybeans. But how do
you grow enough algae to make a dent in the nation’s energy demand?

Ruan is turning to an unlikely partner: the local sewage treatment plant.

“Wastewater has lot of nutrients: phosphorus, nitrogen, are all available in wastewater,
and actually you spend lot of money to remove these from wastewater, so if we can kill
two birds with one stone, that would be the best, and that’s what we’re hoping to do.”

(sound of treatment plant)

St. Paul, Minnesota’s sewage treatment plant sits on the bank of the Mississippi River.
The basement of the building where the solids are separated from the liquids is a
brightly lit space. It’s filled with big steel pipes and valves and tanks.

Off to one side, Ruan’s team is setting up a rack of aquariums – the future home of juicy
green algae. When everything is ready, some of the partially-treated waste will be
diverted into the tanks, where it will feed the algae.

The waste is still full of stuff that’s bad for the river, but good for algae.

“It’s got a fair amount of phosphorus, and some ammonia nitrogen that the algae are
going to need.”

Bob Polta is manager of research and development at the treatment plant.

It’s easy to see why he likes this idea: every day the facility has to remove 4 tons of
phosphorus and more than 16 tons of nitrogen from the waste stream.

The algae experiment, if it works, will allow them to do some of that removal in a more
cost-effective way. And this could be the answer to Roger Ruan’s problem of trying to
create enough algae to make enough oil to compete with petroleum diesel.

Polta says there’s a big potential, both for cleaning wastewater and for producing
energy in the same place.

“All the wastewater treatment ponds in the small communities around the state are
essentially using algae to treat wastewater; it’s just that they’re not being harvested. It’s
just that we’re getting two goals together here, and two research groups, one is essentially taking algae and
harvesting the oil and making biodiesel, and the other is using algae as a treatment
scheme, and to see if we can make this thing really fit.”

Polta expects by the end of the year he’ll know more about whether this is a practical
idea.

Roger Ruan says within six-to-ten years someone, somewhere, will be producing diesel
from algae on a commercial scale.

For The Environment Report, I’m Stephanie Hemphill.

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Stopping Ships’ Stowaways

  • A ship discharging its ballast water (Photo courtesy of the US Geological Survey)

Congress might take a final vote soon on a bill
that would make foreign ships treat ballast water to
kill unwanted species, before entering US waters.
Many environmental groups support the measure, but some
worry about the loss of state control. Chuck Quirmbach
reports:

Transcript

Congress might take a final vote soon on a bill
that would make foreign ships treat ballast water to
kill unwanted species, before entering US waters.
Many environmental groups support the measure, but some
worry about the loss of state control. Chuck Quirmbach
reports:

Backers of the ballast water requirement, recently passed by the House, hope to reduce the
number of invasive species brought in by foreign vessels.

Dozens of non-native species, like the zebra mussel, are causing major problems in the
Great Lakes. But the group ‘Midwest Environmental Advocates’ is raising concerns.

Executive Director Karen Schapiro says the House bill would prevent states from
developing ballast water treatment standards that are tougher than federal law, or that
take effect sooner.

“You know we would like to see the most feasibly stringent standards on the table, on the books,
even if that’s done on a state by state basis.”

But the shipping industry says it doesn’t want a patchwork of state regulations. The
national ballast water language is part of a Coast Guard bill that still has to be reconciled
with a Senate measure.

For The Environment Report, I’m Chuck Quirmbach.

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From the Toilet to the Tap

  • Inside the Reverse Osmosis building for the Groundwater Replenishment System in Orange County, California. (Photo courtesy of Orange County Water District)

Treated sewage water has been used to water
lawns and flush toilets before. But now the world’s
largest “toilet-to-tap” system has gone online. Mark
Brush reports on the new water treatment system:

Transcript

Treated sewage water has been used to water
lawns and flush toilets before. But now the world’s
largest “toilet-to-tap” system has gone online. Mark
Brush reports on the new water treatment system:

You think flush the toilet and it’s gone, right?

Well… that’s not happening in the O.C.

In Orange County California, the water people flush from their homes and businesses will
eventually come back to their taps.

The treated sewage water is sent to a water purification plant. It’s treated some more and
then pumped back into the aquifers where the county gets its water supply.

Mike Wehner is with the Orange County Water District. He says, at first, people kind of
held their nose at the idea:

“The biggest concern is kind of a general yuck-factor. It’s just, ‘You mean sewage? We’re
not going to drink that.’ But after people develop an understanding of the kind of
treatment processes we’re talking about, the yuck-factor diminishes, it goes away.”

Wehner says when the half billion dollar system is at its peak; it will add 70 million
gallons of recycled water a day to the areas drinking water supply.

For the Environment Report, I’m Mark Brush.

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Invasive Reeds Help Treat Wastewater

  • Phragmites, or "common reed," is being used to treat wastewater in Shelburne Falls, Massachusetts. (Photo by Adam Allington.)

Nature is often full of practical solutions to real-world problems. Take the case of sewage and wastewater treatment: for decades engineers have used mechanical means to process wastewater before disposing of the end product in landfills. It turns out that phragmites, a robust wetland reed, can do the job just as quickly and for a fraction of the cost. Adam Allington has more:

Transcript

Nature is often full of practical solutions to real-world problems. Take the case of sewage and wastewater treatment: for decades engineers have used mechanical means to process wastewater before disposing of the end product in landfills. It turns out that phragmites, a robust wetland reed, can do the job just as quickly and for a fraction of the cost. Adam Allington has more:


Brandee Nelson is wearing knee-high rubber boots. She’s wading out into a tiny patch of reeds gently swaying in the wind. They’re planted in a goopy substance that appears to be mud, but is actually…


“Sludge. We’re standing ankle deep in sludge. Sludge is the leftover solids from the conventional sewage treatment process. Things that are very organic in nature, but thin enough that you can’t really scoop it out with your hand. It’s not the consistency of yogurt, it’s more like a thin milkshake.”


That thin milkshake used to be the solid stuff that you flush down the drain. Brandee is an environmental engineer working for the village of Tivoli, New York. Today she is monitoring the growth of two recently planted reed beds. The reeds are an invasive wetland species called “phragmites,” or “common reed”. In most places these reeds are a problem because they crowd-out native plants, but here they’re doing a job.


“The whole reason to have the reed beds is really to get the largest volume reduction of your waste product. Because the sludge tends to have so much water in it, and phragmites sucks up an enormous amount of water. This bed, we’re standing in it now, this bed will be totally dry in one day.”


Even though Tivoli is relatively small at about 1000 residents, the village still produces 100,000 gallons of waste water every day. That waste water translates into a whole lot of sludge, which Tivoli then has to haul to landfills.


“We’ll probably be saving about $45,000 on hauling fees.”


Tom Cordier is deputy mayor for the village of Tivoli.


“At one point we had drying beds, and it took about a week for them to dry, and then we would come in with our backhoe and take out the dried material. But every time we got ready to do that, it would rain and we would have to start the whole process over again, and then in the wintertime it was always freezing, and finally we got to the point where we had to have it trucked away.”


Before they planted the reeds, Tivoli had to remove their liquid sludge once a month. When the reeds are fully grown, the village won’t need to haul anything away for over 10 years. But if reed bed technology is so efficient, why isn’t everyone using it?


The answer has a lot to do with the predictability of mechanics, versus the variables of biology.


“One of the issues with the reed beds is it’s a biological process. Engineers like to typically do things that are mechanical, things that fit into formulas.”


Dan Fleuriel is director of the wastewater treatment for the town of Shelburne Falls, Massachusetts. Shelburne Falls began experimenting with reed bed technology back in the early 1990’s. Unlike the short 3 foot reeds in Tivoli, the mature reeds in Shelburne Falls tower some 6 feet over us as we walk through them.


“We’ve been applying to these reed beds since 1993. It’s been very good for us because we’ve gone from a very time consuming process of de-watering sludge to something that we pretty much leave hands-off that we can rely on.”

Functionality and reliability: they’re fundamental to any civil engineering project. But Brandee Nelson notes that Tivoli’s reed beds also make sense from an environmental perspective.


“This waste product, 150,000 gallons of it, used to go to a landfill somewhere else and it wasn’t our problem any more. Now what we’re able to do is manage that waste product here on site in a relatively small footprint using a natural technology, a very low-energy technology, and in the end we’ll end up with a product that we can use for village landscaping projects.”


Tivoli’s reed beds are expected to reach full maturity by next summer. Success of the project is being followed closely by neighboring towns, who are also considering a switch to reed bed treatment plants.


For the Environment Report, I’m Adam Allington.

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Link Between Race and Waste Facility Sites?

A new study adds to the debate over whether race plays a role in the placement of hazardous waste facilities. The GLRC’s Tracy Samilton reports:

Transcript

A new study adds to the debate over whether race plays a role in the placement of
hazardous waste facilities. The GLRC’s Tracy Samilton reports:


Previous studies have shown that about 25 percent of the people living near
toxic waste treatment and disposal facilities are minorities, but University of Michigan
Professor Paul Mohai says that’s because researchers looked at the neighborhood in
which the facility was located. Since most of them are located close to the edge of a neighborhood, many people living just a street or two away weren’t included:


“Statistically they’d be considered no closer to the facility than someone living a thousand
miles away from it.”


Mohai says the minority percentage is closer to 43 percent when all neighborhoods in a
circle around the site are included. Researchers still have to find out if the facilities are being placed in existing minority communities, or if minorities move into them afterwards. Some environmentalists say there should be stricter regulations on toxic
waste facilities to protect all people’s health.


For the GLRC, I’m Tracy Samilton.

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Groundwater Study Finds Low Voc’s

Federal researchers have detected Volatile Organic Compounds, or VOC’s, in many of the nation’s underground drinking water supplies. But the samples showed lower concentrations of the cancer-causing chemicals than some suspected. The GLRC’s Erin Toner reports:

Transcript

Federal researchers have detected Volatile Organic Compounds, or
VOC’s, in many of the nation’s underground drinking water supplies. But
the samples showed lower concentrations of the cancer-causing
chemicals than some suspected. The GLRC’s Erin Toner reports:


Volatile Organic Compounds are by-products of industrial and
commercial applications. They come from plastics, paints, dry-cleaning
products and gasoline.


Over the past few decades, researchers have detected many places in the
country where soil and groundwater is highly contaminated by VOCs.
This latest study by the U.S Geological Survey took a broader look at
VOC concentrations in the nation’s groundwater.


John Zogorski led the project.


“In most of the wells that we sampled, and we’re sampling before any
treatment by the water utilities, we didn’t find any of these 55
compounds using even our most sensitive analytical methodology.”


Zogorski says VOC’s were found in some drinking water wells, but he
says the good news is that where the VOC’s were found, they were
mostly below federal drinking water standards.


For the GLRC, I’m Erin Toner.

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Epa Proposing New Rules for Sewage Plants

The U.S. Environmental Protection Agency is proposing new rules on how sewage treatment plants clean water after heavy storms. The Great Lakes Radio Consortium’s Shawn Allee reports:

Transcript

The US Environmental Protection Agency is proposing new rules on
how sewage treatment plants clean water after heavy storms. The Great
Lakes Radio Consortium’s Shawn Allee reports:


When rainstorms overwhelm sewage treatment plants, cities sometimes
blend raw sewage with clean water that can contaminate local rivers and
lakes with bacteria. To stop this, the EPA’s proposing a compromise
with local governments. Cities may blend waste when there’s no
alternative, but they must improve their waste treatment systems.


Alexandra Dapolito Dunn represents an alliance of city treatment
facilities. She says local governments need this flexibility.


“There are going to be some communities around the country where, due
to the low income and the distressed nature of an urban population, they
may have a difficult time affording the most cutting edge technologies
available.”


It’s not clear how much money cities will save under the proposed
guidelines. Upgrades can cost millions of dollars, and right now,
treatment centers compete for limited federal assistance.


For the GLRC, I’m Shawn Allee.

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