The people of Jatisari Village, Malang Regency, have a serious waste problem. There is a ban by the East Java Provincial Government regarding the location of the Final Disposal Site (TPA) which is too close to the highway, causing villagers to throw garbage in the river or burn it, without separating organic and inorganic waste first.
Departing from these problems, the team of KKN OPF Universitas Brawijaya initiated a productive waste management. The team led by Dr. Siti Asmaul Mustaniroh, STP, MP from the Faculty of Agricultural Industrial Technology uses the Black Soldier Fly to process organic waste and can be used as animal feed.
“The harvested BSF maggot can be used as animal feed, because the amino acid and protein content reaches 40 to 50 percent. Cultivation itself is commonly done because it is easy to do in bulk”, explained Asmaul.
This activity began with a waste bank socialization conducted by Mrs. Iin as a waste bank administrator in Pendem Village, Batu City, Malang. This socialization is carried out so that the people of Jatisari Village carry out waste sorting activities, both organic and inorganic so that they can reduce the amount of waste and increase community income.
For maggot cultivation, it begins with the preparation of 52 grams of fly eggs. “The maggot cultivation process begins with making egg hatching media in plastic containers. The medium used is bran mixed with water so that the bran remains in a moist condition. The addition of water to the bran is done every 2 days to keep it moist. The eggs are placed on a cross section made of wire that has small pores covered with tissue so that the eggs do not come into direct contact with the media because the eggs will die. The hatching process takes 3-5 days,” explained Asmaul.
“Baby Maggot” is a maggot that has just hatched and falls into the medium to survive. Baby maggots develop for approximately 7 days after the egg hatching period takes place. Then the baby maggot which is 3-4 cm in size is transferred to the enlargement medium.
“The enlargement media uses wooden shelves. In this process, organic waste is needed as maggot feed to grow. The organic waste used usually comes from kitchen waste. The waste is chopped or mashed first so that it can be digested by the maggots,” added the lecturer at the Department of Agricultural Industrial Technology.
“In one hatchery containing 2 grams of eggs, it requires 2 kilograms of enlargement media. Meanwhile, at the time of maggot enlargement, for 1 kg of maggot it takes 4 kg of organic waste as maggot feed. Maggot after 15-20 days can be harvested. The maggot harvesting process is carried out using a simple sieve. Maggot that has been harvested can be sold and used as a source of protein for animal feed, thereby increasing the income of the people of Jatisari Village,” he added.
The result of the KKN OPF activity is that this simple maggot cultivation technology at a low cost can produce 150 kg of maggot which is used as an alternative in processing organic waste in a healthy and economical way and to increase the income of the people of Jatisari Village. [Humas UB/ Trans. Iir]