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可降解塑料颗粒归于什么垃圾?

可降解塑料颗粒归于什么垃圾?

来源网址:https://www.swjjkl.com/ 2021-10-19 10:58:20    

可降解塑料是指在自然界,如土壤、沙土、淡水环境、特定条件下(如堆肥化条件、好氧或厌氧消化条件),由自然界存在的微生物效果引起降解,并终究完全降解变成甲烷、二氧化碳和水及其矿化无机盐等的塑料。

Degradable plastics refer to plastics that are degraded by microorganisms existing in nature under specific conditions (such as composting conditions, aerobic or anaerobic digestion conditions) in nature, such as soil, sandy soil, fresh water environment, and eventually completely degraded into methane, carbon dioxide, water and its mineralized inorganic salts.
市面上的塑料袋又有光降解、氧化降解、生物可降解、全降解等种种说法,依照国家标准,现在只认生物可降解,其它降解都已取消。根据我国轻工业联合会2020年9月发布的《可降解塑料制品的分类与标识标准攻略》,可降解塑料制品的图形标识为“双J”,消费者可以此作为选购生物可降解塑料制品的标志。
Plastic bags on the market also have various statements such as photodegradation, oxidative degradation, biodegradability and total degradation. According to national standards, only biodegradability is recognized, and other degradation has been cancelled. According to the introduction to the classification and identification standards of degradable plastic products issued by China Light Industry Federation in September 2020, the graphic identification of degradable plastic products is "double J", which can be used as a sign for consumers to buy biodegradable plastic products.
该攻略表示,可降解塑料有必要没有生态毒性,即可降解产品堆肥化后,堆肥对植物的出苗成长或动物(比如蚯蚓)的存活不能产生负面影响。尽管从理论上来说,生物可降解塑料袋应可作为湿垃圾处理,但实际上这类塑料袋现在还是跟随干垃圾处理。当然,这也取决于现在国内城市垃圾的处理方式。由于现在生物降解材料尚处于产业开展前期阶段,所以相对本钱较高。
The strategy indicates that it is necessary for degradable plastics to have no ecotoxicity, that is, after composting, composting can not have a negative impact on the emergence and growth of plants or the survival of animals (such as earthworms). Although in theory, biodegradable plastic bags should be treated as wet waste, in fact, such plastic bags are still treated as dry waste. Of course, it also depends on the current treatment of domestic urban waste. Since biodegradable materials are still in the early stage of industrial development, the relative cost is high.