Landfill is an effective method to absorb a large amount of municipal solid waste, and it is also the final disposal method of all the residues in the garbage treatment process. At present, the direct landfill method is widely used in China.

The so-called direct landfill method is to fill the garbage into the prepared pit, cover and compact it, make it undergo biological, physical and chemical changes, decompose organic matter, and achieve the purpose of reduction and harmlessness.

Second, incineration treatment.

Incineration is a method of putting garbage into a high-temperature furnace to fully oxidize the combustible components in it, and the generated heat is used for power generation and heating. The garbage conversion energy system jointly developed by Westinghouse and O 'Connor Company has been successful.

The incinerator of this system can convert garbage with humidity of 7% into dry solid for incineration, and the incineration efficiency is over 95%. At the same time, the high temperature on the surface of the incinerator can convert heat energy into steam, which can be used for heating, air conditioning equipment and steam turbine power generation.

Third, composting.

Domestic garbage is stacked, stored and fermented at 70℃, and organic matter is decomposed into inorganic nutrients by the decomposition ability of microorganisms in garbage. After composting, domestic garbage becomes sanitary and odorless humus. It can not only solve the way out of garbage, but also achieve the purpose of recycling. However, domestic waste compost has a large amount and low nutrient content, so long-term use is easy to cause soil hardening and groundwater deterioration. Therefore, the scale of compost is not easy to be too large.

Types of non-recyclable garbage:

Second, non-recyclable garbage.

Garbage is divided into recyclable garbage, kitchen waste, toxic harmful waste and other garbage. Among them, kitchen waste, toxic harmful waste and other wastes are not recyclable.

1, kitchen waste

Kitchen waste includes peels, vegetable leaves, leftovers, post-meal garbage, etc. After recycling, kitchen waste can be used as fertilizer, turning waste into treasure.

2. Toxic and hazardous waste

Toxic and harmful wastes include paint pigments, waste batteries, waste lamps, etc. If these items are discarded at will, it will seriously affect the environment and cause danger. We should throw these rubbish into the toxic and harmful trash can in time.

3. Other garbage

Other rubbish also includes toilet paper and napkins with strong water solubility.

References:

Baidu encyclopedia-garbage classification