生物砂濾水器（Biosand filter）
這麼多年過去了，我還是深深為這個美妙的設計吸引。一位在新竹任教的大學老師 Chingyi 幫忙翻譯了手冊的文件，我最近才弄成網頁貼文，放上來跟給大家分享。Read More »生物砂濾水器（Biosand filter）
Make A DIY Bio-Sand Water Filter For Safe Drinking Water
Bio-sand filters are super quick and easy to build and they are very effective at filtering dirty water and making it safe. Watch the video… Read More »Make A DIY Bio-Sand Water Filter For Safe Drinking Water