Home Composting (Aerobic)
Materials required:
· A perforated container.
· Brown matter(carbon): Dried leaves, unbleached, uncoloured, unlaminated cardboard pieces, saw dust, cocopeat, dry soil, sand, peanut shells, rice husk etc.
· Green matter(nitrogen): Fresh veggie peels and fruit peels, strong acidic peels like citrus, lemon, chillies, onions, garlic and ginger, meat, bones, dairy products and rotten food.
· Whatever the peel other than the above, chop it finely and thoroughly before adding it to the compost. Eggshells are to be crushed before adding them to the compost. Coffee grounds, tea powder works well with composting. You may also add hair and nails.
· Never add heavily coated paper. You may add unbleached white papers but not printed papers as it may contain lead.
· If you are not able to get brown matter, you may get some soft coconut fiber, tear them to tiny chunks and put them in a mixer grinder to make it a fine powder. This can be added to the compost.
· Maintain moisture of the compost by sprinkling some water, do not keep it dry and do check it regularly...every day. keep the container in a shady place.
· Optional Materials Required:
o Ash (Adding ash to compost enrich the quality of the compost, maintains alkalinity. Bakeries are good sources of ash.
o Charcoal: Acts like sponge absorbing extra moisture also has the ability to store nutrients and release them slowly when added to the soil. Iron wallas are good source of charcoals.
o Sour buttermilk: Improves and increases the microbial activity. You may sprinkle butter milk to increase the rate of composting.
· Procedure:
o Put a layer of carbon/brown matter (oddly shaped twigs,coconut fibre,etc. To form the bottom most layer of the container). These should be two parts (say 2 cups as unit of measurement)
o Add one part of wet kitchen waste (say one cup as unit of measurement that is drained of all excess water) to two parts of brown matter. Mix well and make sure that the resulting mater is moist and not soggy. You may also add charcoal, ash, cashew-nut powder (from 4 pieces), table spoon of cinnamon powder in the initial stages to enrich the compost.
o Add this to the container and cover with thin layer of browns and leave it alone. This layer prevents files from sitting on the pile.
(Now! the important thing to do is as below:
Preparation of Lactic Acid Bacteria (LAB):
- Collect 100 ml. of reject water that comes from washing the raw rice.
- Take the above liquid and mix them with 300 ml. of milk in a small mud pot and cover it with a muslin cloth and tie it properly. Leave it for 4 days.
- After 4 days, open it and remove the scum over the surface area, then separate the curd part of it(and discard them), then the remaining liquid is called Lactic Acid Bacteria. Collect this liquid separately.
Preparation of fermented rice:
- Keep the cooked rice as it is undisturbed for 4 days. It gets fermented.
- There will be a layer over the surface of the fermented rice. It is an indication.
Now, Add LAB to the fermented rice. it will turn into a solution. Now! to this solution add one table spoon of rice bran in the solution. Leave the solution as it is for 4 days.
Now! the bacteria culture is ready.
Now add 10 ml of the above solution to the compost pile once in a two days and turn it whenever you find time...)
o Repeat the first steps 2 and 3 every day.
o Stir the pile as often as you can to allow a lot of air.
o When the first container gets full (3/4th level), prepare another container and follow the same procedure.
o Keep stirring the compost pile in the first container throughout the process. The pile will become hot in its initial phase.
o By the time the second container becomes full, it is possible that the first pile cools down and the contents look dark and half composted. Partly composted matter is not messy to handle and can be transferred into a plastic or a jute sack for further composting making the container available for a fresh batch. Or, if you have more containers to spare, keep using newer ones to start the process and retain the compost in the bin until all of it is completely done.
o Sieve the contents and add the big pieces that need to break down further to a next batch of waste for composting.
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· Enriching the compost: The homemade compost can be enriched by adding red-wrigglers and other earthworms to the compost that is already done in a separate container.
Some tips:
1. Adding the ratio 2 parts of browns to 1 part of greens should be done without any compromise. We don't have any choice here.
2. While adding the waste, if possible shred them to the maximum you can. This will speed up the composting procedure.
3. Adding the bacteria culture is very important otherwise we cannot be able to compost the cooked waste. if you do not add them, it will make the compost stinky with a bad smell. It might also attract some worms. You don't have any choice here. Make the bacteria culture or you go for uncooked kitchen waste composting.
4. Always maintain dampness in the compost bin. Don't keep it too dry or too soggy. strike a balance.
I hope this helps!
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