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 2022, 22% of organic waste are treated within our university. In 2022 KMUTT generated organic waste within our university 181,789 kg. or 44.42 % of total Municipal solid waste which compost of 50,597 kg of food waste, 130,789 kg of leaves, garden waste. The 36,000 kg. of food waste go to waste utilization process-From Waste to Energy using Anaerobic Digester for Biogas production and get fertilizer within 24 hours /batch . The 3,984 kg of garden waste go to Waste Utilizing Center to make fertilizer. The remaining 141,402 kg of food scraps and leaf scraps are sent to government agencies because the space within the university is not enough to process the remaining organic waste. The results from organic waste treatment are biogas 3,600 m3/year and 12,264 kg /year of fertilizer as by products from biogas production; 18,000 liters /year of Liquid Fertilizer from Waste Utilizing Center . Moreover, KMUTT could reduce carbon emission to 794,048.7 kg/year CO2-e and save more than 2,785.69 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 2022, 71.15% of food waste are completed to biogas and fertilizer.
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.