In the People's Republic of China **** and the State Circular Economy Promotion Law on the reduction of quantities and resource: the said reduction refers to the reduction of resource consumption and waste generation in the process of production, circulation and consumption. Resourcing refers to the use of wastes directly as raw materials or the recycling of wastes.
But the regulations do not define harmless, so in reality will be sent to the landfill landfill of domestic waste is also known as harmless disposal, but this disposal method is a temporary reduction of environmental hazards, in the long run some harmful substances can not be eliminated through the passage of time, such as heavy metals in the garbage, although the bottom of the landfill have been strictly anti-seepage treatment, but the time has passed! There is still seepage, this method can not be strictly speaking can not be considered truly harmless, the actual to achieve completely harmless is more difficult.
Non-hazardous treatment, environmental science academic term. Meaning: so that the waste no longer pollute the environment, and can be utilized, turning waste into treasure. Basically, there are three main methods of landfill treatment, incineration treatment, composting treatment.
1, landfill is a large number of effective ways to eliminate municipal waste, but also all the waste treatment process residue of the final treatment method, now, China generally use direct landfill method. The so-called direct landfill method is to fill the garbage into the pit has been prepared to cover the compaction, so that it undergoes biological, physical and chemical changes, decomposition of organic matter, to achieve the purpose of reduction and harmlessness.
2. Incineration is a method of placing garbage in a high-temperature furnace to fully oxidize the combustible components therein, and the heat generated is used for power generation and heating.
3, the domestic garbage will be piled into a heap, insulation to 70 ℃ storage, fermentation, with the help of microbial decomposition in the garbage, the decomposition of organic matter into inorganic nutrients. After composting, domestic waste becomes hygienic, odorless humus. Swine farm waste includes pig manure, sewage, dead pigs, stillbirths, placentas, discarded residual pigs, and discarded vaccines.
I hope what I have shared will help you!