Methane - Sewage
Methane gas is a kind of gas that can be used as fuel gas. Methane can be produced from disposal waste. There are several steps to produce methane gas from waste. First we put the waste into warming bed. In warming bed, waste is processed into fertilizer and methane. But methane gas that is produced by warming bed can not be used yet. It must through other processes. So methane gas flows into dirt trap. In dirt trap, methane gas was separated from the dirt. After that, methane gas flows again into water in gas indicator. We can see some methane bubbles like boiled water in gas indicator. Then the gas flows into pressure release. In this step, when the pressure is high, there is excess gas. Last step is methane gas flows into gas holder. In gas holder, methane gas is kept in inner tubes. There is a weight on the top of inner tubes to increase gas pressure. If we want to take methane gas, we just turn the tap and the methane gas will flow out.
Water is the most important thing in human’s life. Because if there is no water in the world, all live creatures will be extinct. So we must keep the water from the pollution. In order to keep the water, we can purify sewage from household into clean water in three steps. First is sewage puts into settling tank. In this tank, undecayed solids from poluted water are removed and burned. After that, water flows into pump house. In this step, poluted water is pumped and flows into third step. Then jet of poluted water in sprinkler beds is flowed through rotating arms, filter of stones and micro-organisms, and brick. After these steps, the poluted water has been purified. So it is safe now to flow the purified water entering river.
O.K.
posted by stevens @ 10:15 AM
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