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(best examples and good practices) on household organic waste ...

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82<br />

equivalence c<strong>on</strong>siderati<strong>on</strong>s <str<strong>on</strong>g>and</str<strong>on</strong>g> sustainability aims, a reducti<strong>on</strong> of these<br />

emissi<strong>on</strong>s should therefore be called for. On the part of the biological <strong>waste</strong> air<br />

purificati<strong>on</strong> processes, an effective reducti<strong>on</strong> of emissi<strong>on</strong>s is not adopted. Care<br />

therefore needs to be taken with MBT to ensure that <strong>waste</strong> c<strong>on</strong>taining CFCs is<br />

as far as possible excluded or filtered out early, but at all events that it does not<br />

enter the biological stages. (Greenpeace., 2003)<br />

4.8.Household treatment of Biodegradable <strong>waste</strong> separated at source<br />

Another existing method of h<str<strong>on</strong>g>and</str<strong>on</strong>g>ling a specific fracti<strong>on</strong> of <strong>waste</strong> (garden <strong>waste</strong>,<br />

kitchen <strong>waste</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> specific type of paper) generated at <strong>household</strong>s is<br />

composting at source (Picture 9.). There are many types of composters today.<br />

The <strong>on</strong>ly thing some<strong>on</strong>e must do is separate the specific <strong>waste</strong> stream at source<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> put it inside the composter (which is usually installed in a yard) for the<br />

compost process to take place. Kitchen composters can be installed too for the<br />

treatment of kitchen <strong>waste</strong>.<br />

Picture 9.: Household composter<br />

The process usually takes from 6-12 m<strong>on</strong>ths. This depends <strong>on</strong> temperature, the<br />

materials to be composted, etc. The final product (compost) can be used as a<br />

fertilizer for agricultural purposes.<br />

Finally mainly in Asia a <strong>household</strong> treatment method has been used for quite<br />

sometime. It is the <strong>household</strong> (AD) treatment method. This method is mainly<br />

used in agricultural territories. The producer can produce biogas for electricity<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> fertilizer (as a by-product of the anaerobic digesti<strong>on</strong> process). The method<br />

though hasn’t been widely used because of the complexity of the AD process<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> the lack of AD <strong>household</strong> systems without problem generati<strong>on</strong>, such as<br />

insufficient biogas producti<strong>on</strong>, odours, etc.

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