午夜免费福利不卡网址92_国产欧美日韩视频在线观看一区二区_亚洲国产日韩在线观频_大片免费播放在线观看视频_真实国产乱子伦精品免费_七龙珠gt国语版全集高清_99久热只有精品视频免费看_亚洲欧美日韩国产专区一区_日本国产精品欧美_国产欧美另类,AV片免费大全在线观看不卡,国产V亚洲V天堂无码久久久,亚洲综合国产成人丁香五月激情

Kitchen waste is the most important type of food waste, including food processing scraps (kitchen waste), food residues (swill) and waste edible oils and fats generated from activities such as household, food processing, catering services, company feeding and others. Kitchen waste is divided into three parts: oil, water and solid waste. Oil-water separation is a common pre-treatment step in kitchen waste treatment. In addition to oil and water, kitchen waste solid waste itself has high content of salt, calcium, protein, phosphorus, nitrogen and starch, rich in organic matter and trace elements, can be used in a wide space, can be processed into natural organic fertilizer, made into biological feed, or used for incineration power generation, fermentation hydrogen production, biogas production, pyrolysis production of gas and other purposes.