When you encounter a garbage negative man, do you continue to stay in the same city or go back to th

There should be an answer in your heart, and you really ask yourself if you hate him and if you want him. Two options.

If you want yourself to live well and give him a good look, it means that you still have him in your heart. According to what you said above, such a person is not worth your choice. You should leave the city, leave his life, and not let him appear in your life, just as a memory.

If you don't care about him anymore, you start thinking about your future. You should have forgotten about him, no longer remembered him, and no longer had any illusions that he would come back to you. He is not worth your wait, you don't have to deliberately avoid him, without him in your heart, no matter how much you meet, there will be no soft-heartedness.

You still move on with your life.

I know a friend who has given up on that relationship and is now living just as well.

Let's go, let yourself live a little better, be happier, if you can't forget, don't forget, sometimes we have to know how to let go before we can be happy.

Let him go, wish him happiness, go home and admit his mistake to his parents, nothing, see it clearly in the future and then decide, it is a shame to be reluctant for a half-hearted person, come out of the shadows as soon as possible, people are looking forward, no big deal.

Go home, always** always open the door for you.

Find a better one, wish you happiness and forget about him. Men and women are carbohydrates, don't pay too much attention to that aspect. It's good to find someone who is more handsome and rich than him.

Go home, home is your safe haven forever!

If you take a round of oak Zen like a liter of city garbage, you can ** 2,000 tons of waste orange dust plastic a day.

1) How many garbage removal trucks are needed to transport these waste plastics at one time? (1 garbage truck to clean up tons of garbage).

2000 units.

2) If 1 ton of waste plastic can make 250 liters of gasoline, how many liters of gasoline can be made from these waste plastics?

250 2000 = 500000 liters.

1) 700 (55+45) = 7 hours.

2) Set up a day to process garbage for x hours a day, and B for y hours a day.

From the question to take the shouting:

550x + 495y ≤ 7370 ①

55x + 45y = 700 ②

By substituting y=(700-55x) 45, solving the inequality yields x 6 6*55=330 tons.

Therefore, factory A can process at least 330 tons of garbage every day for 6 hours, so that the cost does not exceed 7,370 yuan.

Learn to share, constantly improve yourself, work hard, improve each other, and pursue the future.

You throw it into your house and don't clean it.

Just get it.

In some cities along the river, along the river, and along the coast that are not able to deal with it, the vast majority of them are straight rows, that is to say, you pull it, drink it downstream, and you drink it upstream. It's just that the water plant is filtered and disinfected. In addition, the running water has a self-purifying function, so you don't notice anything.

Do you have such questions? If it is discharged directly into the river, it breaks the cycle for agriculture. The return to the field after the excretion of food eaten by a person should be a complete cycle. It's like that in the countryside. The biggest biological chain breaks in the city.

This is within the scope of the control of the urban management department. The manure in the septic tank that is sucked up by the manure truck is used to irrigate the crops.

Agriculture should use a part! And then the rest went to the sewage treatment plant!

Solution: (1) If car A needs to transport x times after transporting this pile of garbage alone, then car B needs to transport 2x times after transporting this pile of garbage alone.

The inscription is: x 2x 12

Multiply 2x on both sides to get : 2 +1=1 6 x

Then x=18

then 2x=36

Answer: A and B need to transport this pile of garbage separately after transporting it separately.

2) The freight of a trip is m yuan.

Because: B's freight is 200 yuan less than that of car A.

Then we set the freight of car B for a trip: m-200 yuan from the meaning of the title: 12m+12(m-200)=4800 to solve the value of m: m=300

The fare for a trip is 300 yuan.

The fare for one trip is 100 yuan.

If you rent car A alone, then the total cost you need is: 18 300 = 5400 (yuan) If you rent car B alone, then the total cost you need is: 36 100 = 3600 (yuan) If you rent a car alone, it is more cost-effective to rent car B.

A: If you rent a car separately, it is appropriate to rent a car B.

Pure hand-hitting, please you

It is the responsibility of the community to clean up the sanitary corners without creating a sanitary city!

As soon as there is a problem with 58, it is said that the system is faulty, but there is no system failure at the consulting headquarters, and I also believe that with the technical strength of 58, this is not a problem. I also often engage in some price increases. Now I can't find the personal information I need in 58 properties, because many of the front pages are the portals of intermediaries, which are updated 100 times a day, and finding information is like looking for a needle in a haystack! Sympathize.

You may be posting duplicate posts, the same post is so much, it will definitely not be able to be sent, and there are restrictions, and some** can only be posted once a day under the same column.

Please provide us with the username of the posted information so that we can verify and process it in a timely manner.

It's also the case with me 58 real rubbish.

I'm just disgusted by the ads.

1. Anaerobic fermentation.

Anaerobic fermentation is a complex biological process; Carbohydrates, fats and proteins in feces can be converted into methane under the action of oxygen-deficient conditions and microorganisms, and methane is mainly used as fuel, such as natural gas and coal gas, which is widely used in civil and industrial applications.

2. Aerobic treatment.

The process of fermentation using aerobic bacteria is called aerobic fermentation. The scale of aerobic treatment is small, and only the final dilution can be done after aeration and precipitation; Medium scale or above, after pretreatment and secondary dilution, can be treated according to the standard activated sludge method. An appropriate amount of chemicals is added to the manure to make the feces flocculate, and it is separated into liquid and dewatered sludge by precipitation.

3. High temperature and high pressure treatment method.

The organic matter in the feces can achieve a better treatment effect after continuous oxidation and decomposition for about 1 hour under the conditions of high temperature and high pressure. The capacity of the reactor should be determined based on the calorific value of the manure, the rate of the reaction, and the degree of oxidation.

4. High-temperature composting method.

The manure is mixed into the garbage in a certain proportion and treated with high-temperature composting. If the nitrogen content in the garbage is high, this method should not be used.

5. Chemical method.

An appropriate amount of chemicals is added to the manure to make the feces flocculate, and it is separated into liquid and dewatered sludge by precipitation. The biggest feature of this treatment method is that the feces form solid-liquid separation in a relatively short period of time.

6. Fecal treatment technology.

5. Septic tank treatment.

In small and medium-sized cities and rural areas, due to the treatment of domestic sewage, it is difficult to completely pipeline the collection and treatment of manure, and small septic tanks have become the most common and necessary facilities for unit houses. The function of the septic tank is to receive and store domestic sewage. The pond is divided into three areas: floating layer, silt layer and intermediate clear water layer.

Fresh water can be treated by sewage irrigation. Effluent used for irrigation does not pollute the environment much through evaporation and permeation, but can reduce the total amount of waste removed.

With the popularization of urban sewage pipe network, the way of transporting feces through the sewage pipe network to urban sewage treatment plants for centralized treatment has been gradually developed in China. Since the mid-90s of the last century, more and more cities have adopted the method of pre-treatment of manure and treatment with municipal sewage treatment plants or garbage sanitary landfills, that is, the treated supernatant enters the sewage treatment system, and the fecal residue enters the sludge disposal system or landfills with garbage. There are more than 20 fecal treatment stations built in this way in China.

At present, a small number of fast-growing coastal cities imitate the combined treatment mode of manure and sewage in Europe and the United States, and it is close to the level of the early 80s of the 20th century in the United States. A very small number of large cities are developing along the model of Japanese manure treatment plants, that is, establishing a separate manure collection and treatment system, but the development and level are still at a low level. The vast majority of cities have similar patterns of diversification of manure treatment systems to other developing countries, but are less technologically advanced than some developing countries.

Nowadays, urban housing is generally multi-storey (1--6 floors) or high-rise (more than 6 floors), and now each residence has independent toilets and sewage pipes; The independent pipes are generally connected at the "main sewer" pipe of the building unit, and finally connected to the "septic tank" below the ground. The structure of the septic tank is equivalent to a sedimentation tank of "multi-stage sedimentation", and the feces and sewage in the tank produce phenomena such as "softening" and "decomposition", and due to the continuous increase of sewage in the pool, the sewage such as feces that have been "softened" overflows into the tank and flows away from the underground sewage pipe. If the city has relatively complete sewage treatment facilities and equipment, this kind of sewage can be "collected" from the pipeline by such sewage treatment plants, and then the wastewater will be discharged into the river after treatment, if the city does not have or the equipment is not complete, the sewage of these cities will be directly or mostly discharged into the river; This phenomenon will also pollute the city's river network and water sources.

Since the "cost input" of fertilizer used to collect manure for crops in urban areas is higher than that of chemical fertilizer (mainly the cost of collecting and transporting manure), the "proportion" of "natural fertilizer" such as manure for farmland is now limited.

It is first flushed from the toilet to the centralized sewer of the community, and then enters the main sewer of the urban planning, and directly enters the sewage treatment plant after complex treatment, and finally becomes organic fertilizer**.

Now the new popular practice in the world is to no longer dig large manure pits and septic tanks, but use biological septic agents to decompose feces and eliminate feces directly in large fecal pits. **, the Tianjiao brand bioseptic agent sold on Alibaba is good, and it can also remove odors and dredge sewer pipes, which is imported from Europe.

Tianjiao's brand is expensive, 198 a pack, and the first time you have to invest 2 packs, and then you vote a pack every month, just like that, thousands of dollars a year will be spent.