How does recycling reduce pollution?

Question 1: The classified treatment and recycling of garbage can reduce pollution and save resources. In order to improve the publicity effect, the environmental protection department of a city conducted a sample survey of some residents (1), and the statistical chart showed that 5 tons of garbage were of Class D, accounting for 10%, and the total amount of garbage was 5 ∴ 10% = 50 tons. Therefore, the statistical table is as follows: (2) ∫ The percentage of group C is:1-kloc-0/0%-30%-54% = 6%, and ∴ The hazardous waste is: 50×6%=3 tons; (3) 5000× 54 %× 15× 0.7 = 378 (ton). A: 378 tons of secondary raw materials can be obtained from recycled plastic waste every month.

Question 2: Garbage can be divided into recyclable garbage and non-recyclable garbage. In order to reduce pollution and recycle available resources, the following garbage can be recycled: (a) According to the given waste products, waste batteries, waste paper, waste beverage bottles and waste metal belong to recyclable garbage, so B is selected.

Question 3: What are the benefits of recycling? Besides saving energy and reducing pollution? Can create wealth and make everyone live better! Material recovery has been written in 18. You said there were many benefits.

Of course, it's mainly the two items you mentioned.

Question 4: What are the advantages of recycling waste paper? Benefits of waste paper recycling:

1. Using recycled fiber to make paper can greatly reduce the consumption of trees, water and electricity and the emission of pollutants. According to experts, recycling one ton of waste paper can produce 0.8 tons of recycled papermaking fiber, which can cut down 0/7 trees and save 3 cubic meters of landfill space.

2. In foreign countries, waste paper is called forest resources in cities, because it is waste newspapers, books and periodicals, office paper, kraft paper, cartons, corrugated paper and so on. , is a valuable fiber raw material.

3. Waste paper papermaking has the advantages of low energy consumption, low environmental treatment cost and low unit raw material cost. In China, the production of newsprint with waste paper can reduce the production cost by 300 yuan/ton compared with that with virgin wood pulp, and also can reduce environmental pollution. Therefore, people call paper and cardboard produced with recycled fibers green products.

4. Using waste paper as a resource can achieve a win-win situation of saving and environmental protection.

Question 5: Talk about how to "start with me and start with small things" to promote the recycling of metals and reduce heavy metal pollution. Heavy metals that pollute soil mainly include elements with obvious biological toxicity, such as mercury, cadmium, lead, chromium and metalloid arsenic, and elements with certain toxicity, such as zinc, copper and nickel. Excessive heavy metals will cause plant physiological dysfunction and nutritional imbalance. The enrichment coefficient of cadmium, mercury and other elements in crop seeds is high, even if it exceeds the food hygiene standards, it will not affect the growth and yield of crops. In addition, mercury and arsenic can weaken and inhibit nitrification and ammoniation in soil. Affect nitrogen supply. Heavy metal pollutants have little mobility in soil, are not easy to leach with water and are not degraded by microorganisms. After entering the human body through the food chain, it is potentially harmful. It is necessary to eliminate and reduce heavy metal pollution in soil, with prevention as the priority. The focus of prevention should be to control the concentration and total discharge of various pollution sources; Regularly monitor and supervise agricultural water use to make it meet the water quality standards for farmland irrigation; Rational use of chemical fertilizers and pesticides, careful use of sewage sludge, river mud and pond mud; Urban sewage used for irrigation must be purified; Promote biological control and comprehensive management of diseases, pests and weeds, manage mines and prevent mine poison pollution. In terms of improvement, it can be divided into physical, chemical and biological categories, but the best way is to use the three methods together. Because heavy metal polluters change the redox conditions of soil by dumping soil, improving exotic soil or using chemical modifiers, heavy metals are transformed into insoluble substances and their activity is reduced; Organic pollutants such as trichloroacetaldehyde can be treated by loosening soil, applying alkaline fertilizer, ploughing and ridging, irrigation and washing. This is aimed at soil with serious pollution and concentrated pollution. Biological method, this is the role of microorganisms and plants. Microorganisms act like chemical modifiers, transforming heavy metal particles into insoluble substances. The main function of plants is to absorb heavy metal particles in soil. Gradually absorb heavy metals in the soil. To eliminate and reduce heavy metals in soil, we must pay attention to prevent secondary pollution, that is, take measures to prevent sewage from flowing out of soil. Plants planted in polluted areas and animals growing in polluted areas cannot be eaten and cannot enter the human food chain. US Tmall's WeChat reminder: Remember to take precautions when traveling in foggy days.

Question 6: Recycling is a good way to help reduce pollution.

Recycling is a good way to help reduce pollution.

British phonetic alphabet:

[? Dressing? kl] [？ z] [？ ; e？ ] [g？ D][ we? 】【t？ ; Before vowels; t？ ; Emphasize; Tu? ] [help] [rdju? s] [plu(？ )n】。

American phonetic alphabet:

[? Dressing? kl] [？ z] [e] [？ D][ We] [Tu? t？ 】【h？ lp] [rd？ Plop.