Does your Waste Smell like Money?
Created 7/29/2009 9:16:38 AM 
The Suwa Basin, in the Nagano Prefecture, Japan is home to mineral springs as well as to precision machining companies and metal plating facilities. All of these are thought to contribute to the high concentration of gold in their wastewater sludge. The sewage treatment plant is a modern day urban mine extracting more than 4 pounds of gold from each ton of the fly ash that it produces from processing wastewater!
Cashing In on Septic Tanks
Created 7/6/2009 8:51:18 AM 
A septic tank, the key component of a septic system, is a small scale sewage treatment system common in areas with no connection to main sewage pipes provided by private corporations or local governments. In the US, approximately 25% of the population relies on septic tanks; this can include suburbs and small towns as well as rural areas. (Indianapolis is an example of a large city where much of the city's neighborhoods are still on separate septic systems) In Europe they are generally limited to rural areas only.
Sewage: The New Black Gold
Created 2/16/2009 8:29:42 AM 
Were already extracting biogas from sewage and spreading treated sewage solids on farms and open space, so its also possible to run our cars on biofuel from sewage, too. Specifically, running them on sewage grease. An enormous amount of grease enters our sewer systems - about 495 million gallons annually in the USA alone. Most of it gets captured and collected at sewage treatment plants.
The Pee-Cycling Business
Created 5/9/2008 7:58:30 AM 
Urine is the main source of some of the chemical nutrients that have to be removed in sewage treatment plants if they are not to wreck ecosystems downstream. Despite making up only 1 per cent of the volume of waste water, urine contributes about 80 per cent of the nitrogen and 45 per cent of all the phosphate. Peeing into the pan immediately dilutes these chemicals with vast quantities of water, making the removal process unnecessarily inefficient.


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