Approach to the zero-emission on cafeterias in universities

探讨了高校食堂的零排放，包括利用可分筷和纸擦盘子来减少排水的污染，利用擦盘子后的废筷子和废纸，将剩饭剩菜制成堆肥，以及从经济和环境教育的角度调查材料循环。自助餐厅的用户用纸擦拭餐具，使TOC等排水污染值增加了四分之一。以洗碗后的剩余物和废纸为原料制备活性炭，并对活性炭的性能进行了研究。仅用有机碳计算的吸收率高，不含灰分。建立了以削木为原料生产筷子，一根筷子2元的销售体系。60多所大学已经在食堂使用了这种筷子。废筷子被送到刨花板厂进行材料回收。环境教育是提高人类环境意识的有力手段之一。森林环境教育的建立是为了理解以下三个概念。森林管理对森林吸收二氧化碳具有重要意义。木材和木基材料的利用维持了碳固定。森林生物质是化石燃料的一种替代能源。

The zero-emission of the universities cafeteria was discussed, which included decreasing the pollution of the drainage with utilization of splittable chopsticks and wiping out dishes with paper, the utilization of waste chopsticks and waste paper after wiping out dishes, making composts from leftover and investigation of the materials circulation with points of economics and environmental education. Wiping out dishes with paper by user of the cafeteria make the pollution of drainage such as TOC value one forth. The activated carbon was produced from leftover and waste paper after wiping out dishes, and properties of the activated carbon were investigated. The absorption calculated with only organic carbon with out ash was high. The system of production of chopsticks from thinning logs and selling one chopstick for 2 yens was established. More than 60 universities has use the chopstick in their cafeteria. The waste chopsticks were sent to the f particle-board factories for the material recycle. The environmental education is one of the powerful methods to advance the environmental consciousness of human. The forest environmental education was established to understand following three concepts. The forest management is important for absorption of CO2 in forest.The utilization of wood and wood-based materials maintain the carbon fixation. The forest biomass is an alternative energy to the fossil fuel.