Thứ Bảy, 17 tháng 11, 2012

Một vài trang web về môi trường và công nghiệp

1. http://weedsnews.monash.edu.au/traction?type=digest_html&proj=WeedsNews&sdate=20110711143843%2B1000&edate=now

Drinking water in several Oregon schools found to be contaminated with multiple pesticides

David Low / WeedsNews3761 / September 20, 2012 / 11:52:12 AM EST / 0 Comments
[ENEWSPF September 10, 2012] -- Traces of pesticides in drinking water were found in eleven rural elementary schools in Oregon, according to a U.S. Department of Agriculture (USDA) study released on August 30. The study shows a disturbing variety of pesticides that when combined could have dramatic impacts on the health of the children that consume this water on a daily basis. The study found traces of several different types of pesticides in the drinking water of Dixie and Fairplay, the elementary schools that service Corvallis, Oregon. Some of the pesticides that were found in the Dixie school water include atrazine, bromacil, diuron, imidacloprid, metolachlor, norflurazon, and simazine. In the nine other schools that were found to have pesticides in their drinking water, seven different pesticides were found in the water at Applegate Elementary in Eugene, and multiple pesticides were also found in the drinking water of Ontario’s Pioneer and Cairo elementary. Children face unique hazards from pesticide exposure. They take in more pesticides relative to their body weight than adults in the food they eat and air they breathe. Their developing organ systems often make them more sensitive to toxic exposure. The body of evidence in scientific literature shows that pesticide exposure can adversely affect a child’s neurological, respiratory, immune, and endocrine system, even at low levels. The Food Quality Protection Act of 1996 directs EPA to set pesticide residue standards ten times stricter than those considered acceptable for adults, however, this standard has often been ignored. [Photo credit: The Ecologist] Comment
 
 

Wastewater Treatment Technologies – Myron L Meters Blog

Posted by 24 Oct, 2012
TweetHow many of these wastewater treatment technologies are you familiar with?  What is the most effective combination of processes? How do you measure results? Who’s doing the best wastewater treatment research? Is this the best way? Or can the processes below be recombined, rethought, and retooled into something better? Activated sludge systems Advanced oxidation process [...]
How many of these wastewater treatment technologies are you familiar with?  What is the most effective combination of processes?
How do you measure results? Who’s doing the best wastewater treatment research?

Is this the best way? Or can the processes below be recombined, rethought, and retooled into something better?
Activated sludge systems
Advanced oxidation process
Aerated lagoon
Aerobic granular reactor
Aerobic treatment system
Anaerobic clarigester
Anaerobic digestion
Anaerobic filter
API oil-water separator
Anaerobic lagoon
Bioconversion of biomass to mixed alcohol fuels
Bioreactor
Bioretention
Biorotor
Carbon filtering
Cesspit
Coarse bubble diffusers
Composting toilet
Constructed wetland
Dark fermentation
Dissolved air flotation
Distillation
Desalination
EcocyclET systems
Electrocoagulation
Electrodeionization
Electrolysis
Expanded granular sludge bed digestion
Facultative lagoon
Fenton’s reagent
Fine bubble diffusers
Flocculation & sedimentation
Flotation process
Froth flotation
Humanure (composting)
Imhoff tank
Iodine
Ion exchange
Lamella clarifier (Inclined Plate Clarifier) [2]
Living machines
Maceration (sewage)
Microbial fuel cell
Membrane bioreactor
Nanotechnology
NERV (Natural Endogenous Respiration Vessel)
Parallel plate oil-water separator
Reed bed
Retention basin
Reverse osmosis
Rotating biological contactor
Sand filter
Sedimentation
Sedimentation (water treatment)
Septic tank
Sequencing batch reactor
Sewage treatment
Stabilization pond
Submerged aerated filter
Treatment pond
Trickling filter
soil bio-technology
Ultrafiltration (industrial)
Ultraviolet disinfection
Upflow anaerobic sludge blanket digestion
Wet oxidation
MyronLMeters.com serves the wastewater treament industry with the finest handheld and inline water quality meters.
Please continue this discussion in our Linkedin Users group here:
http://www.linkedin.com/groups/Myron-L-Meters-Users-Group-4584088?gid=4584088&mostPopular=&trk=tyah
or on Facebook here:
https://www.facebook.com/myronlmeters

3.http://www.icis.com/blogs/green-chemicals/2010/03/
I just got this email from Shell announcing their successful start-up of the world's first demonstration plant converting plant sugars into gasoline and gasoline blend components (instead of ethanol) in Wisconsin, USA.
The demo plant has the capacity to produce up to 38,000 litres/year (10,000 gal/year), which will be used for engine and fleet testing. It will use Virent's patented BioForming® platform technology, which uses catalysts to convert plant sugars into hydrocarbon molecules like those produced at a petroleum refinery. Feedstocks that can be used for the plant include corn stover, wheat straw, sugarcane pulp aside from the conventional feedstock such as wheat, corn and sugarcane.
Shell says the new biofuel can be blended with gasoline in high concentrations for use in standard gasoline engines. This means no need for specialized infrastructure, engine modifications, and blending equipment necessary for the use of gasoline containing more than 10% ethanol.


 

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