How to deal with plastic waste?

With the rise of global crude oil price, the price of plastic products, as one of petroleum derivatives, has naturally risen, and the recycling of waste plastics has also been put in the first place.

2. Fuel

At first, a large number of plastic recycling methods were landfill or incineration, which caused a huge waste of resources. Therefore, foreign countries use waste plastics instead of coal, oil and coke for blast furnace injection, cement rotary kiln instead of coal for burning cement, and waste solid fuel (RDF) for power generation, and the effect is ideal.

Step 3 generate electricity

Garbage solid fuel power generation was first applied in the United States. At present, there are 37 RDF power stations, accounting for 265,438+0.6% of garbage power stations. Japan has realized the great potential of waste plastics to generate electricity. In Japan, some small waste incineration plants were changed into RDF production plants in combination with overhaul. After centralized, continuous and efficient large-scale power generation was carried out, and the steam parameters of waste power plants were increased from 300 12 to about 450 12.

Extended data:

Possible degradation

Plastic will decompose in the sun. Starch has also been added to plastics to make it more biodegradable, but the decomposition is still incomplete. Some people even use genetically modified bacteria to produce completely biodegradable plastics, but the cost is still high.

BASF has developed a biodegradable plastic called Ecoflex for food packaging. Due to the cost problem, the above degradable plastics are rarely used. However, this kind of plastic must be exposed to the air to decompose, so if it is buried, it will still lead to the problem of solid waste.

Reference materials? Baidu encyclopedia-plastic recycling