Energy from waste and manure

WASTE
One of the most unusual uses of waste of human activity is to get electricity from garbage. The problem of landfills has become one of the most urgent problems of modern cities. But it turns out, they can still be used to produce electricity. In any case, it is well received in the U.S., in Pennsylvania. When built for burning garbage and at the same time generating electricity for 15,000 homes to get the furnace was not enough fuel, it was decided to fill it with garbage dumps have closed. Produced from waste energy brings the district about $ 4,000 profit per week. But the main thing is the volume of the closed landfill was reduced by 78%.
Decompose in landfills, litter allocates gas, which accounts for 50-55% of methane and 45-50% - into carbon dioxide and about one percent - in other compounds. If the gas is released just before poisoning the air, now in the U.S. are starting to use it as fuel in internal combustion engines to generate electricity. Only in May 1993 114 plants operating on gas from the landfill, produced 344 megajoules of electricity. The largest of them, in Whittier, producing 50 megajoules per year. The station capacity of 12 megawatts can meet the electricity demand of inhabitants 20,000 homes. Experts estimate that U.S. natural gas from landfills is enough for a small stations for 30-50 years. Should not, and we think about the problem of recycling waste? If there is an effective technique, we could reduce the amount of junk "mounds," as well and refill significantly replenish the energy benefit of "shortage of raw materials" for its production is not expected.


 MANURE

It would seem that the manure can be unpleasant? Many problems associated with waste water pollution fur farms. Large amounts of organic matter falling into the water, contribute to pollution.

It is known that the heating plant - active environmental contaminants, pig and cow sheds - too. However, of these two evils, you can write something good. That is what happened in the English city Pidelhintone, where the technology of processing pig manure into electricity. Waste going through the pipeline to the plant, where the reactor is subjected to a special biological processing. The resulting gas is used to generate electricity, and waste recycled by bacteria - for fertilizer. Recycling 70 tons of manure every day, you can get 40 kW / h