Biopori Hole is a small tunnel or pore found underground in healthy soil and is created by tree roots and soil organisms such as worms and termites. This appropriate technology, which can be widely used to prevent flood, is developed by Ir. R Kamir Brata, M.Sc, a scientist at the Bogor Institute of Agriculture in Indonesia.
The country like Indonesia has many cities which are often plagued by floods. There is not only little ground left for water absorption, but the irrigation systems and river pollution also further exacerbate the problem. The Biopori holes could be the key to alleviate the flood problems in and around the large cities.
The hole itself has a depth of 100cm and a width of about 10cm. Each hole can absorb 3 liters of water per minute, or 180 liters per hour. It cannot be separated from the soil organisms activity that will create tunnels or pores in the hole body. The soil organisms will naturally maintain this hole and certainly keep it remain intact without having been touched by human beings. For this reason, people must keep feeding the soil organisms by placing the organic waste into the hole to maintain and even expand their population.
This organic waste will be decomposed by soil organisms through the tunnels or pores. This decomposed waste is known as compost, which can be used as organic fertilizer and can enhance soil enrichment for maximum yields. Not only trees get the benefits, but ornamental plants, vegetables and other plants also will get the benefits. Indirectly, converting organic waste into compost through Biopori Hole is a way of urban waste recycling.
Expanding the catchment areas of the hole is the best way to get maximum result. For example, if the Biopori Hole is made with a width of 10cm and depth of 100cm, the vast catchment area will increase as much as 3140 cm2, or almost 1/3 m2. In other words, a circular surface with a diameter of 10cm, which originally has catchment area of 78.5 cm2, after the Biopori hole is made with a depth of 100cm, its catchment area becomes 3218 cm2.
By utilizing the soil organisms activity and tree roots, Biopori brings a lot of advantages; to overcome the problems caused by stagnant water such as Malaria and Dengue fever, to convert the organic waste into compost, to reduce the greenhouse gas emissions and to increase water absorption.
To know more about the Biopori Hole, we also provide a PDF document for you. You can download it here.