1, composting method

Composting process is to make the organic matter in the garbage, under the action of microorganisms, biochemical reactions, and finally form a similar decay.

2, composting method

Composting process is to make the garbage in the organic matter, under the action of microorganisms, biochemical reactions, and finally form a humus-like soil material, used as fertilizer or soil improvement.

3, pyrolysis

Pyrolysis is a high-temperature heating of organic matter in anaerobic or anoxic conditions decomposition technology, the use of heat to make the polymerization of polymerization breaks down, large molecular weight of organic matter into small molecules of combustible gases (hydrogen, CH 4, CO, etc.), liquid fuels (methanol, acetone, tar, etc.) and the process of coke.

4, incineration

Municipal waste incineration can achieve heat recovery, volume reduction, weight loss, high temperature sterilization and other purposes, with obvious advantages in environmental protection and resource utilization.

Expanded Information:

Ancient Garbage Disposal:

According to canonical records, as early as the pre-Qin period, the city was already quite large, the population began to be dense, and the rulers of that time formulated a fairly strict decree.

In order to deal with the garbage problem in the Tang Dynasty, the state promulgated corresponding regulations, which were no less strict than those of the pre-Qin Dynasty. According to the Tang Law Review, people who littered on the streets would be punished with 60 dapan (六十大板).

If law enforcers condoned people's littering behavior, they would also be punished together. During the Tang Dynasty there were also people who made a career out of recycling garbage and disposing of feces, and some people got rich doing so.

The Song Dynasty set up a special organization to manage environmental sanitation in cities: the Street Department. Under the Street Department were full-time sanitation workers, whose duties included sweeping the streets, diverting stagnant water and tidying up the cityscape, according to an account in the Meng Liang Lu.

In large cities like Kaifeng and Lin'an, hundreds of sanitation workers would clean the streets and dispose of garbage every morning.

Source:Baidu Encyclopedia-Domestic Waste Disposal