How to classify the garbage in the garbage dump, and how many types of domestic waste landfills are

Coagulation and sedimentation is a common technology in water and sewage treatment, which removes organic and inorganic pollutants in colloidal and micro-suspended states in sewage through electrical neutralization, electric double layer compression, adsorption bridging and net capture. Zhang Yuechun et al. used coagulation and sedimentation method to treat the leachate membrane filtration concentrate of a landfill in Sichuan, and tested the effects of coagulant type, dosage and coagulant ratio on the treatment effect. The experimental results showed that the treatment effect of FeSo4 and PAM was the best. Under the optimal reaction conditions, the COD removal rate of wastewater can reach 74%, and the removal rate of UV254 can reach 52%.

The electrocoagulation process uses electrochemical methods to precipitate O2 microbubbles on the anode and H2 microbubbles on the cathode while producing flocculants, and effectively remove pollutants through flocculation, air flotation and electrolytic redox. Compared with the traditional coagulation and sedimentation process, electrocoagulation has the advantages of high efficiency, small sludge volume and easy solid-liquid separation, and has gradually become a research hotspot. Many scholars at home and abroad have applied electroflocculation to the pretreatment or advanced treatment of landfill leachate, and on this basis, there have also been attempts to apply it to the treatment of leachate membrane filtration concentrate.

The final treatment results showed that the removal rates of COD, chromaticity and total phosphorus increased to varying degrees with the increase of current density and reaction time.

I am a Texas geotechnical material manufacturer, I have the environmentally friendly geomembrane you need, and I can mail samples for free.

Construction Standard for Domestic Waste Sanitary Landfill Treatment Project Construction Standard 124-2009

Article 11 The construction scale of the landfill shall be determined comprehensively according to the amount of garbage generated, the natural conditions of the site, the topography and geomorphological characteristics, the service life, and the technical and economic rationality. The classification of landfill construction scale and daily processing capacity should comply with the following provisions: 1. Classification of landfill construction scale:

The total capacity of the class is more than 12 million m3;

The total capacity of the class is 500-12 million m3;

Class total capacity of 2 million to 5 million m3 ;

The total capacity of the class is 1 million to 2 million m3.

Note: The above scale classification includes the lower limit value and does not include the upper limit.

2. Classification of daily processing capacity of landfill construction scale:

The daily processing capacity is more than 12 million t d;

The daily processing capacity is 500-1200t d;

The daily processing capacity is 200-500t d;

The daily processing capacity of the class is less than 200t d.

Note: The above scale grading includes the lower limit and does not include the upper limit.

According to whether the environmental protection measures (such as anti-seepage at the bottom of the site, layered compaction, daily coverage, landfill gas drainage, leachate treatment, pest control, etc.) are complete and whether the environmental protection standards are met, China's domestic waste landfills can be divided into three levels:

1) Simple landfills: Simple landfills have been used in China for decades, and their main feature is that there are basically no environmental protection measures and no compliance with environmental standards. At present, a considerable number of domestic waste landfills in China belong to this type, which can be called open-air landfills, and they also cause great environmental pollution.

2) Controlled landfills: Controlled landfills also account for a large proportion of landfills in China, and they are basically concentrated in large, medium and small cities. Its main feature is that it is equipped with some environmental protection facilities, but it is not complete, or it is equipped with environmental protection equipment, but it cannot fully meet the environmental protection standards.

The main problems are concentrated in the anti-seepage at the bottom of the site, leachate treatment and daily soil covering, which do not meet the environmental protection requirements.

3) Sanitary landfill: The so-called sanitary landfill is a landfill method that can control leachate and landfill gas, which is widely used by the majority of developed countries. Its main feature is that it has both perfect environmental protection measures and can meet environmental protection requirements.

After the landfill is built, a layer of geomembrane should be laid, and the function of the membrane is mainly to prevent the leakage of pollutants and protect the environment. According to the Canadian Soma geomembrane international ****, the geomembrane has good impermeability performance, the geomembrane itself is impermeable, its water seepage is mainly because of the pinholes and micro-gaps caused by the plate forming process, the permeability coefficient is much lower than that of clay, and only 1-3mm geomembrane needs to be laid during construction to meet the anti-seepage requirements, saving landfill space; The tensile properties of geomembranes are related to synthetic materials, but they are all better than clay and much less sensitive to uneven settlement in landfills than clay.

Summary. Hello dear, happy to answer your <>

Answer: The classifier of the garbage station is a question of sorting garbage in this way, and when they see the residents who come to throw away the garbage, they take the initiative to ask whether they have been sorted; Second, take the initiative to check whether the garbage in the hands of residents is correctly classified according to the standards; three points, to guide residents who do not classify according to the correct garbage for secondary sorting; Fourth, guide the residents who have been divided into categories to put their garbage into the corresponding garbage cans; Five initiatives, thank the residents for their support to the garbage classification work, and invite the residents to the publicity area to learn about garbage classification. First of all, we must do a good job of publicity, let everyone know that garbage classification is imperative, and understand the basic knowledge of classification.

Secondly, the garbage collection points will be unified and centralized, and personnel will be arranged to guide the garbage classification at the collection point at the initial stage. In the early stage, you may not understand that you need personnel to guide and classify, and you can remove personnel after getting used to it. It is also necessary to collect it regularly, such as what time of day to what time you can put out the garbage.

It is better to have an incentive mechanism, such as garbage classification can be points, and points can be exchanged for some garbage bags or something, so as to mobilize everyone's enthusiasm. Garbage sorting is a long-term work, which cannot be achieved overnight, and the main thing is to develop good habits.

How do the garbage sorting staff at the garbage station sort the garbage?

Good. Hello dear, happy to answer your <>

Answer: The classifier of the garbage station is a question of sorting garbage in this way, and when they see the residents who come to throw away the garbage, they take the initiative to ask whether they have been sorted; Second, take the initiative to check whether the garbage in the hands of residents is correctly classified according to the standards; three points, to guide residents who do not classify according to the correct garbage for secondary sorting; Fourth, guide the residents who have been divided into categories to put their garbage into the corresponding garbage cans; Five initiatives, thank the residents for their support to the garbage classification work, and invite the residents to the publicity area to learn about garbage classification. First of all, we must do a good job of publicity, let everyone know that garbage classification is imperative, and understand the basic knowledge of classification.

Secondly, the garbage collection points will be unified and centralized, and personnel will be arranged to guide the classification of garbage at the collection point at the initial stage. In the early stage, you may not understand that you need personnel to guide and classify, and you can remove personnel after getting used to it. It is also necessary to collect the burns regularly, such as what time of day to put out the garbage.

It is better to have an incentive mechanism, such as garbage sorting and putting Brother Pi can be points, and the points can be exchanged for some garbage bags or something, so as to mobilize everyone's enthusiasm. Garbage sorting is a long-term work, which cannot be achieved overnight, and the main thing is to develop good habits.

How to classify garbage, the state has always advocated garbage classification, but for everyone, garbage classification is a bit too difficult, because sometimes garbage into several garbage cans are appropriate, and sometimes I don't know which garbage should be put in which garbage can, let me take you to briefly understand how to classify garbage.

Domestic garbage can generally be divided into four categories: garbage, kitchen waste, hazardous waste and other garbage.

Can be **garbageThere are five categories: waste paper, plastic, glass, metal and cloth.

Food waste:Food waste such as leftovers, bones, roots, leaves, and peelsHazardous Waste:Including batteries, fluorescent tubes, light bulbs, mercury thermometers, paint buckets, some home appliances, expired medicines, expired cosmetics, etc.

Waste containing heavy metals, toxic substances, or actual or potential harm to the environment that are harmful to human health.

Other garbage:Garbage other than the above categories.

Yes, the garbage dry and wet station will carry out garbage classification and treatment, Zhongcheng environmental protection garbage dry and wet station adopts the process of "mud collection, efficient dewatering, sewage purification, reclaimed water reuse and compression and transfer", I hope it can help you!

At present, the current garbage transfer station generally does not have the function of garbage sorting. It is just to realize the compression and transportation of garbage, reduce volume and weight.

In order to realize the sorting of garbage, the following points need to be noted:

1. Front-end classification - that is, the garbage of each household must be classified when it is put into the house.

2. Classification and transfer - after you have sorted and loaded, the vehicles that come to collect must also be classified. Otherwise, it will be mixed up again when it is installed.

3. Terminal classification - the final treatment of garbage is generally divided into incineration and landfill, and now some places have increased the sorting link before the pilot, and the classification of garbage is realized by technical means. At present, the garbage sorting technology is mainly combined with the following means: magnetic separation - sucking the metal out; Winnowing - blowing paper and plastic bags; Manual – People are the best machines.

Of course, before and between these major process equipment, a lot of crushing, transmission and other equipment need to be added. Therefore, a garbage sorting station is very large and the investment is very high. It is not possible to have these facilities at the small garbage transfer stations that are usually seen in the city.

In addition, in fact, China's garbage sorting is very good, people are the best machines, a bunch of waste pickers can clean up the valuable things in the garbage, no technical means can compare with - of course, this is self-deprecation.

Sanitation workers will pick out some high-value waste**, but that is certainly not a real garbage sorting, and things like waste batteries will not be picked out.

To add, waste batteries have long been mercury-free, and the heavy metal content of regular brand batteries is very low, and it is not as easy to seep into soil and groundwater as ** said, so there is no need to worry.

Classification is their job responsibility.

Domestic garbage collection stations generally set up different sorting bins or areas according to different types of garbage, and common garbage classification includes the following types:

1. Objects: including paper, plastic bottles, glass, metals, textiles and other items that can be reused.

2. Kitchen waste: including food scraps, leftovers, peel verification, tea residues and other organic wastes.

3. Hazardous garbage: including waste batteries, expired drugs, paints, chemicals, lamps, household appliances and other items that are harmful to the environment and the human body.

4. Dry garbage (other garbage): including some non-hazardous and non-hazardous domestic garbage that cannot be classified into the above categories.

Garbage station design.

The specific classification criteria may vary from region to region and country, and the specific classification methods and classification facilities can be queried and understood according to the relevant local policies and guidelines.