Disposable nondegradable plastics refer to disposable bags containing non-biodegradable polymer materials, including shopping bags, daily plastic bags, paper-plastic composite bags, and plastic bags used to hold garbage; Disposable dining utensils containing non-biodegradable polymer materials, including boxes (including lids), bowls (including lids), plates, plates, beverage cups (including lids), etc; Other disposable non-degradable plastic products that need to be prohibited as determined by the provincial government based on actual needs.
Biodegradable, also known as biodegradable in English, refers to the ability of substances to be biodegraded and utilized by microorganisms in natural environments, ultimately transforming into non-toxic and harmless substances. Biodegradability is an environmental concept aimed at reducing adverse effects on the environment and ecosystems, especially on soil, water sources, and wildlife.
Degradable materials are usually made from natural organic compounds, polymers, or polylactic acid. These materials can be decomposed by microorganisms in a short period of time, converted into water and carbon dioxide through respiration, and released with energy. Therefore, for products that require long-term storage, such as plastic bags, food packaging, and tableware, the use of biodegradable materials can effectively reduce harm to the environment.
In the design and development process of biodegradable materials, many factors need to be considered. For example, the biodegradation rate, temperature, humidity, and microbial type of materials can all have an impact on their decomposition. In addition, in practical applications, biodegradable materials must also comply with relevant regulations and standards to ensure that the product does not pose any harm to human health.
Composting is a natural biological process that converts organic matter into a stable Humus-like product under controllable conditions. The composting process mainly involves the decomposition of simple compounds by microorganisms, including bacteria, fungi, and actinomycetes.
Composting is an aerobic fermentation process, which means that microorganisms need oxygen to complete.
It is a kind of Organic fertilizer, which contains rich nutrients, and has a long and stable fertilizer effect. At the same time, it is conducive to promoting the formation of soil solid structure and can increase the ability of soil to retain water, heat, air, and fertilizer. Moreover, mixed-use with chemical fertilizers can make up for the defects of single nutrients in chemical fertilizers. Long-term single use of chemical fertilizers can harden the soil, and reduce the ability of water and fertilizer retention. Composting is a kind of Organic fertilizer made from various plant residues (crop stalks, weeds, leaves, peat, garbage, and other wastes) as the main raw materials, mixed with human and animal manure and decomposed by composting.
There are a number of benefits to composting that not everyone is aware of. Some examples are listed below:
1. Reducing and mitigating soil-borne diseases: Composting can reduce and alleviate soil-borne diseases without the use of chemical drugs, which has been widely recognized and appreciated.
2. Substitutes for breeding mats: Compost can replace the use of breeding mats such as straw, sawdust, and rice husk. The method of use is to directly lay it in the breeding pen, adsorb animal excrement, reduce environmental pollution, and provide a comfortable environment for animals
3. Kill pathogenic bacteria: livestock manure may contain Flagellate and cryptosporidium. Most pathogenic bacteria can be killed within 30 minutes at 60 ℃.
4. Soil improvement: Compost is a good soil conditioner. Improve soil's physical, chemical structure, and biological environment to reduce potential soil erosion.
5. Improving soil utilization: transforming unstable wastes into stable Humus; Reasonable carbon-to-nitrogen ratio of composting to improve land use; The high temperature generated during the composting process can reduce the number of weed seeds.
6. Reduce environmental pollution. Good composting facilities will not produce odor or breed flies. Especially for agricultural farmers, the cost of consuming animal manure is high, and animal manure has exceeded the soil's bearing capacity
7. Organic planting and organic horticulture: Compost has comprehensive nutritional elements, and years of use have made planting vegetables and fruits more flavorful and sweet; Reduce costs in the use of organic horticulture (peat soil is more expensive).
ㆍ Degradation: After the function is completed, it can quickly degrade under natural environmental conditions, become easily usable fragments or fragments, and return to nature. The degradation condition is that the degradation process of biodegradable products requires certain environmental conditions to be met.
ㆍ Safety: The substances generated during the degradation process and remaining after degradation are harmless or have no potential harm to the environment.
ㆍ Economy: The price is slightly higher than that of similar ordinary plastics, but it is not harmful to the environment. Product Material: Currently, the real biodegradable plastic materials on the market are usually polylactic acid (PLA), polyadipic acid/butylene terephthalate (PBAT), or PLA+PBAT+starch (St).
ㆍ Practicality: It has application performance and hygiene performance similar to similar ordinary plastics.