Waste into organic fertilizer by microbial preparations

A new microbial product used to treat organic waste into organic fertilizer has been successfully researched and produced by the Institute of Environmental Technology (Vietnam Institute of Science and Technology).

Specifically, the Institute isolated and selected thermophilic strains of bacteria including 30 thermophilic bacteria belonging to Streptomyces and 20 thermophilic strains of Bacillus. These actinomycetes and bacteria have the advantage of producing enzymes (enzymes) that strongly decompose organic substances in wastes such as domestic waste, straw, seaweed peat, animal and poultry manure. . at high temperatures (50 - 60 degrees Celsius) into organic fertilizer.

In one gram the composition contains tens of billions of effective microbial cells. All strains of selected microorganisms used to produce microbial preparations have been thoroughly studied biological characteristics to confirm that they are not toxic to humans, animals and the environment.

Tomato grows well thanks to organic fertilizer produced from garbage.

How to compost waste into compost is also very simple. Just mix 1kg of inoculant into 30 liters of water, then every one layer of waste 30-50cm thick, irrigate 2-3 liters of inoculant solution. Use plastic or cover soil to cover the compost pile. If the pile is dry, add more water.

Microbial preparations studied by the Institute of Environmental Technology were first tested at the Cau Dien Urban Waste Processing Factory (Hanoi). The results showed that if using conventional technology of the plant, the treatment time lasts about 45 days and there is a stench coming from the compost tank.

But when adding 30 kg of microbial inoculants to a treatment tank of 150m3 of garbage, the aerobic treatment time is 30 days and there is no bad odor. Thus, with the addition of microbial inoculants, it has saved 1/3 of the time of aerobic treatment and also saved energy.

After treatment of waste by microorganisms, a clean and safe organic fertilizer is produced. Vegetables, tubers, fruits such as tomatoes, carrots, cabbage, soybeans grow fast, have high productivity, better resistance to pests (compared to control plants that apply only by chemical fertilizers or fresh manure without incubation), no pathogenic parasites such as worms, parasites .

Currently, microbial inoculants are continuing to be applied at the domestic waste treatment plant Viet Tri, Vinh Phuc and Dong Xoai garbage treatment plant (Binh Phuoc province).

Dr. Tang Thi Chinh, head of the Department of Environmental Microbiology (Institute of Environmental Technology), said that in the near future, microbiological preparations will be more widely deployed in many other provinces and cities in the country.