Hey everybody, long time listener, first time caller. I'm more interested in the UFO information like most people here, but I thought I'd make my
entrance with this topic. I have some experience in environmental remediation, and most of our big projects were centered around landfill cleanup and
abatement. You would be surprised and the heavy metals, chemicals and carcinogens we find in landfills. It's usually things like lead, nickel,
copper, and cadmium, arsenic, cyanide, uranium, and usually low to average amounts of mercury. The most common hazardous thing we tend to run into is
large amounts of old paint. Don't throw away paint! And don't worry, the people working to cleanup our old waste always wear PPE. The fact is
every landfill will have mercury regardless of the light bulb you use. A good resource to see just how much mercury is in your home has been linked
below.
www.nwf.org...
Also for the next section, the basics of landfills:
www.ejnet.org...
The sanitary landfill system, especially the cleanup aspect, is complicated so I'll address the real issue with these contaminates; leachate, the
waste water produced by the chemicals and fluids dumped in a landfill. State funded landfills are generally built on a solid bedrock foundation with
some sort of liner. HDPE is the heavy weight contender in the liner division. The bedrock integrity is important in the control of the leachate as a
crack or weakness can lead to groundwater contamination below the fill, which is difficult to spot and treat. To counter buildup the bottom of the
landfill is sloped, ending in a drainage pipe to collected the leachate. This wastewater is then run through a bioreactor usually containing fungi or
bacteria with resistances to the contaminants identified for removal. They retain the contaminant for removal, effectively reducing the
contamination. The water is then run through a waste water treatement facility for further purification. Pseudomonas has a 85-97% mercury retention
rate, depending on bioreactor conditions.
These things do impact the environment, like nearly everything else you throw away, but a CFL is honestly on the small end of the scale. I can tell
you that, at least in this country, our government is turning out more money each year to resolve many contaminated sites (just check out FBO). Also,
5mg an outdated figure among leading manufacturers. Philips released a series of Extreme Low Mercury CLF's earlier this year, with the lowest
content at 1.4mg and the highest at 2mg.
www.lighting.philips.com...〈=en
Even Walmart is pushing for lower Mercury content.
www.prnewswire.com.../www/story/05-10-2007/0004585479&EDATE=
The fact is, the move to green alternatives isn't easy, and it's all about little steps towards to right solution. LEDs are definitely a great
alternative, when the technology catches up to the demand. But for now, this is a great alternative to incandescent. Home Depot is just one retailer
offering recycling, both in the US and Canada.
www6.homedepot.com...
On a final note, I get it. The idea of a hazmat cleanup is not something you want to deal with in your home. Truth be told it's an important skill
to learn. You never know when the need for containing a hazardous substance will be presented.
Great site everyone!
[edit on 5-9-2009 by DocHoliday]
[edit on 5-9-2009 by DocHoliday]