KMUTT provide Municipal solid waste management system by educate all in campus with KMUTT’s Municipal solid waste management system Manual. The manual have four main parts including waste segregation, waste collection , waste utilization and Recyclable waste bank. The most importance part of Municipal solid waste management is waste segregation. At KMUTT, four colored bins are provided including green, yellow, blue and red which represent for organic waste, recycled waste, non–recycled waste, and toxic waste respectively. Those organic waste such as leaves, grass, fruit and cooked food are collected for composting process where organic matter has been decomposed into fertilizer for use with tree and plant around campus. In one month, we can produce compost from organic waste more than 300 kg.
Organic waste treatment
In 2019, 100% of organic waste are treated within our university. Organic waste is generated at 32,786 kg or 7.69 % of total Municipal solid waste which compost of 29,200 kg of food waste, 2,343 kg of fruit, vegetable and garden waste and 1,243 kg of used vegetable oil. The 29,200 Kg of food waste go to waste utilization process (Waste to Energy) by using Anaerobic digester for Biogas production and get fertilizer within 24 hours /batch . The 2,343 kg of fruit, vegetable and garden waste go to Waste Utilizing Center to make fertilizer and 1,243 kg of used vegetable oil go to Bio-diesel production in Community Bio-diesel Production Plant. The results from organic waste treatment are bio-gas 3,000 cm3/year and 7,500 kg /year of fertilizer as by products from bio-gas production); 5,000 liters /year of Liquid Fertilizer from Waste Utilizing Center and 2,500 liters/year of Bio-diesel. Moreover, KMUTT could reduce carbon emission to 34,500 kg/year CO2-e and save more than 12,950 USD/year according to waste management cost, LPG expenditure and fertilizer cost.
Targets: 100% of food waste are completed to biogas and fertilizer.
Current Status: In 2019, 100% of food waste are transform to energy
At KMUTT Cafeteria, tons of food are wasted including raw meat, vegetable peelings, bones and shells and leftovers dish. All of them are produced approximately 300 kg of food waste/day. Hence, KMUTT set up waste utilization program in organic waste to produced bio-gas by using food wastes from food center and canteen in the campus. The amount of 100 kg of food waste/day produce around 10 m3/day of bio-gas. This bio-gas is used for cooking and boiling water at canteen. Beside, there are also the by-product which is soil conditioner or fertilizer. These waste utilization activities reduce around 20 percentage of total municipal solid waste and make high benefits from waste to energy and waste to organic farm in the campus. There are four main advantages why the anaerobic digester is best option to the campus. First, cafeteria has a consistent in gas demand and waste generation which is predictable. The historical static data from University show that the number of student and university staffs are followed a similar pattern which is very helpful in plant well–design to enhance the efficiency of production. Second, the climate in Thailand is hot and humid as located in the tropical area. The climate is suitable for bacteria (Mesophilic and Thermophilic) to decompose organic matter and increase their product rate of methane gases. Third, soil conditioner which is by–product can be used for trees and flowers within campus. Last, this plant can be a learning center for student who interest in Renewable energy and waste utilization.