What are the advantages and disadvantages of landfill methods, and what are the advantages and disad

Landfill, usually refers to a sanitary landfill, rather than digging a pit and burying it, and there are many cases of digging a pit and burying it casually, not to mention for the time being. Landfill, is the most common and common way to deal with garbage, the advantage is to concentrate the garbage we produce in a place with less people, harmless treatment, here harmless, refers to our goal, we want to make these garbage harmless, but can it actually be done? A sanitary landfill not only occupies a large amount of land resources, after the garbage is filled, it will have a long-term impact on the surrounding environment, including air, surface water, groundwater, soil and other aspects, and after the garbage is filled, it takes decades of maintenance and control to achieve the closure state, during which poor maintenance is very likely to occur, we have many examples of landfills, not mentioned here, the land use after the closure is also a more troublesome problem, not to elaborate, You must not grow food, and you must not build a house.

Landfill, although the technology to prevent secondary pollution is already good, but pollution can never be without, think about it yourself, so much garbage, buried there, even if you circle around, fully enclosed, it can not be without pollution In fact, to put it bluntly, it is a helpless approach for us against the garbage mountain.

Incineration, for the disposal of garbage, really has many advantages. The best volume reduction, harmless recycling, but secondary pollution is inevitable, especially now the first report on waste incineration, saying that the pollution is very serious, the carcinogenicity is very strong, and so on. But landfills can also produce dioxins, and in the case of no treatment, there will be a larger amount of incineration plants than treated, no one wants a garbage incineration plant to be built at their doorstep, but no one wants to be a landfill at their doorstep, no one wants to be a garbage mountain at their doorstep, and no one wants to go anywhere, all they see is a garbage mountain, there are some things we have to do, we can consider building the incineration plant far away from people, it is a big deal to spend a lot more freight, but, for some places, There is no place for people to live, so there is no reason for you to pull your Beijing garbage to my Hebei to bury it?..

The poor are cheap? That's it, it may not be what you want, hopefully someone will add it to you.

Advantages: 1) Low investment; 2) Simple and easy; 3) The excavation pit landform can be restored.

Disadvantages: 1) No ** resources; 2) Improper disposal will cause filtrate seepage to pollute groundwater and pollute the surrounding soil; 3) Potentially harmful; H2O123 net.

1. Advantages of landfilling garbage:

Sanitary landfill has the advantages of mature technology and low treatment cost, and is the main way of centralized disposal of urban waste in China. The use of potholes to landfill municipal waste can not only dispose of waste, but also cover the soil to protect the environment. The investment is slightly smaller, the process is simple, the treatment capacity is large, and the harmlessness of the surface is better realized.

2. Disadvantages of landfill garbage:

The landfill garbage is not harmless, and a large number of bacteria and viruses remain; There are also hidden dangers such as biogas heavy metal pollution; Its landfill leachate will also pollute groundwater resources for a long time, potentially causing great harm and bringing endless consequences to future generations.

Not only does this approach not recycle waste, but it is also a dangerous way to leave the source of pollution to future generations. Many developed countries explicitly prohibit landfills. China's competent authorities at all levels have gradually understood the problems existing in this treatment technology, and are bound to prohibit and eliminate such behaviors.

Incineration: advantages, relatively speaking, it does not occupy a large area of land, there is no land cost, and the subsequent landfill may produce polluted groundwater or accidents, and the general incineration is used to generate electricity, which has certain economic benefits; The disadvantage is that the exhaust gas generated is not well treated, causing air pollution, and there are requirements for the humidity of the type of garbage entering the site, and the selection of points is more troublesome, that is, the pretreatment link is more restrictive.

Landfill: Advantages, the part that does not produce incineration waste gas and pretreatment is mainly land cost and cover maintenance cost, and the pollutants are mainly landfill gas and leachate, and the environmental pollution is relatively small; Disadvantages: It occupies a large amount of land, and the early layout is very critical, and it needs to be maintained in the later stage to avoid landfill gas and the seepage of the bottom layer of seepage to pollute the groundwater.

Nowadays, China's domestic waste can generally be divided into four categories: ** garbage, kitchen waste, hazardous waste and other garbage. At present, the commonly used waste disposal methods mainly include comprehensive utilization, sanitary landfill, incineration and composting.

1. Garbage mainly includes waste paper, plastic, glass, metal and cloth. Waste paper: mainly including newspapers, periodicals, books, various packaging paper, office paper, advertising paper, cartons, etc., but pay attention to paper towels and toilet paper due to the strong water solubility.

Plastics: mainly include all kinds of plastic bags, plastic packaging, disposable plastic lunch boxes and tableware, toothbrushes, cups, mineral water bottles, etc. Glass:

It mainly includes all kinds of glass bottles, broken glass pieces, mirrors, light bulbs, thermoses, etc. Metal objects: mainly including cans, canning boxes, toothpaste skins, etc.

Fabrics: mainly include discarded clothes, tablecloths, face towels, school bags, shoes, etc. Through comprehensive treatment, pollution can be reduced and resources can be saved.

For example, 850 kilograms of paper can be made from 1 ton of waste paper, saving 300 kilograms of wood, and reducing pollution 74 than the same amount of production; 0 7 tons of secondary raw materials can be obtained for every 1 ton of plastic beverage bottles; Every 1 ton of scrap steel can be made 0 9 tons of steel, which saves 47 costs compared with ore smelting, reduces air pollution by 75, and reduces water pollution and solid waste by 97.

2. Kitchen waste includes leftovers, bones, roots, leaves, peels and other food wastes, which are composted by biotechnology on site, and can produce 0 3 tons of organic fertilizer per ton.

3. Hazardous garbage includes waste batteries, waste fluorescent tubes, waste water silver thermometers, expired medicines, etc., which require special and safe treatment.

4. Other garbage includes bricks, ceramics, muck, toilet waste paper, paper towels and other wastes in addition to the above-mentioned types of garbage, and sanitary landfill can effectively reduce the pollution of groundwater, surface water, soil and air.

Through the action of microorganisms in the soil and moisture, the garbage that is easily perishable in a short period of time can be landfilled. The rotted garbage becomes fertilizer for the land.

Summary. Hello ha, friend, it is an honor to serve you. <>

<> hello, this is Bing. Landfill technology is a method of burying domestic garbage underground after anti-seepage treatment, which can reduce the volume and pollution of garbage. According to the actual situation, the teacher will sort out the application prospects of landfill technology for you in the following aspects:

1.Landfill stock waste management: through excavation, screening, incineration and power generation, the landfilled waste is recycled and utilized, and land resources and energy resources are released.

2.Refined management of landfills: By improving the level of landfill process, pollution control, and final site remediation, the remaining storage capacity can be used more efficiently and the life cycle of landfills can be extended.

3.Sustainable sanitary landfill technology: Waste disposal is reduced, recycled and harmless through measures such as source reduction, utilization, pre-entry pretreatment and landfill stabilization.

4.Landfill gas utilization technology: By collecting and treating the biogas generated by the landfill and converting it into clean energy, it not only solves the problem of environmental pollution, but also creates economic benefits.

Application prospects of landfill technology.

Hello ha, friend, it is an honor to serve you. <>

<> hello, this is Bing. Landfill technology is a method of burying domestic garbage underground after anti-seepage treatment, which can reduce the volume and pollution of garbage. According to the actual situation, the teacher will sort out the application prospects of landfill technology for you in the following aspects:

1.Landfill stock waste management: through excavation, screening, incineration and power generation, etc., the landfilled waste is recycled and utilized, and land resources and energy resources are released.

2.Refined management of landfills: By improving the level of landfill process, pollution control, and final site remediation, the remaining storage capacity can be used more efficiently and the life cycle of landfills can be extended.

3.Sustainable sanitary landfill technology: Waste disposal is reduced, recycled and harmless through measures such as source reduction, utilization, pre-entry pretreatment and landfill stabilization.

4.Landfill gas utilization technology: By collecting and treating the biogas generated by the landfill and converting it into clean energy, it not only solves the pollution problem of the surrounding land and Tongtan environment, but also creates economic benefits.

The teacher didn't think it was <>

As a mature and economical solid waste terminal treatment method, landfill technology still has a lot of development space and potential in China. However, it is also necessary to pay careful attention to the combination with other treatment methods such as incineration and composting to form a diversified, recycling, and low-carbon solid waste treatment system.

In addition to metals, plastics, and some non-degradable garbage and hazardous waste, it can be disposed of in landfills, such as bricks and ceramics, disposable tableware, toilet waste paper, towels, bamboo products, hair, muck, etc.

The overall idea of treating solid waste is "reduction, recycling, and harmlessness", which refers to reducing the amount of waste generated from the source, recycling, recycling, and reuse, and harmlessness refers to solidification, landfill treatment or incineration treatment. For the mixed garbage must be sorted, select the required components to be reused, domestic garbage can generally be selected out of metal plastics, paper wood and other ** use, other landfills.

Methods of Municipal Waste Landfills:

1. Sanitary landfill. A layer of municipal waste (60 cm thick) is emptied, compacted, covered with 15 cm thick soil, sand or fly ash, and so on, until 90-120 cm of topsoil is covered.

2. Compress landfill. The garbage is compressed and backfilled, which can be fireproof, prevent mosquito breeding, and decompose slowly.

3. Crushing landfill. Crushing landfills is conducive to the reproduction of aerobic bacteria. The lowest part of the landfill site of municipal waste should be more than 3 meters above the groundwater level, and anti-seepage and exhaust measures should be taken in the landfill.

After the landfill is closed, it can be used as a green place, and no permanent buildings can be built on it.

In addition to some non-degradable garbage and hazardous garbage such as metals and plastics, it can generally be landfilled, which is a more common way of garbage disposal, so everyone should do a good job of garbage classification on weekdays.