Team leader: Rong Fan

Members: Li Zongquan, Ling, Shao, Wu Peiman, Shao Xiaoman and Chen Hong.

Instructor: Yao Jikai Zhu Lihua

One question:

Now most rivers in our country are polluted by water, and many rivers in our hometown are no exception. Is this natural pollution? Don't! ! I remember when I was a child, many rivers in my hometown were crystal clear. In the past, every summer, there was a constant stream of people swimming and fishing, which gave people a clean and cool feeling. However, with the delay of time and the passage of time, those rivers are no longer decent. Now there is a bad smell coming from your nose. What you see is pieces of garbage and piles of construction waste. What are the reasons why these rivers are polluted? What harm does water pollution bring? Today, with these questions, we came to the local area for investigation and research.

Second, the purpose of the study:

1. Through investigation, we can know the main causes of local river pollution and a series of hazards.

2. Make clear people's understanding of water pollution through the visit.

3. Through consultation, look for improved methods to restore the rivers in my hometown.

Third, research methods and processes:

(1) preparatory work

(2) Implementation stage

1, data collection

Definition of water pollution: The so-called water pollution is clearly defined in the Law on the Prevention and Control of Water Pollution in People's Republic of China (PRC) promulgated by 1984, that is, the phenomenon that the chemical, physical, biological or radioactive characteristics of water are changed due to the intervention of certain substances, thus affecting the effective use of water, endangering human health or destroying the ecological environment, and causing the deterioration of water quality is called water pollution. However, water pollution can be divided into two categories: one is natural pollution; The other is man-made pollution. At present, man-made pollution is the most harmful to water bodies. Water pollution can be divided into three categories: chemical pollution, physical contamination and biological pollution.

There are many hazards caused by water pollution:

(1) Dead organic pollution comes from untreated municipal domestic sewage, paper-making sewage, agricultural sewage and municipal garbage. Dead organic matter will consume dissolved oxygen in water and endanger the survival of fish; It can also lead to lack of oxygen in water, leading to the death of microorganisms that need oxygen. It is these aerobic microorganisms that can decompose organic matter and maintain the self-purification ability of rivers and streams. The consequences of their death are: rivers and streams turn black and stink, and toxins accumulate, hurting people and animals.

(2) Pollution of Petrochemical Detergents Most household and restaurant washing products are petrochemical products, which are difficult to degrade. Discharge into rivers will not only seriously pollute water bodies, but also accumulate in aquatic products, and poisoning will occur after a large number of them enter the human body.

(3) Acids (sulfuric acid, etc. ) Pollution acids mainly come from coal mines and metals (copper, lead, zinc, etc. ) Mine wastes and factories that discharge acid into rivers. Acids can poison aquatic plants, lead to the death of fish and other aquatic organisms, and seriously damage the ecosystems of streams, ponds and lakes.

2. Field visit survey:

We came to the interview site with these questions. First of all, we observed the surrounding situation, introduced ourselves to the interviewee, and made clear the purpose of this trip.

3. Field visit:

Interview location: Lu Yi Yifan River.

Interviewer: Li Zongquan and Ling Wenzhi

Interview time: April 20xx 12

Shopkeeper of riverside grocery store: "This river was crystal clear ten years ago. There were a lot of fish and shrimp there at that time. When I was a child, I often went swimming in the water. But in the last ten years, the river has become dirty, and there is a lot of garbage on the river. I hope the government can improve. "

Two old people in the street: "The reason why this river is dirty is that it can't be used because of poor sewage discharge and purification." Moreover, some people litter, and all the villagers' domestic wastewater is collected into the river. Then, this impulse can't be dirty. "

Two couples selling vegetables in the market: "This river is very polluted. People grab fish and shrimp in the river and throw the bodies of cats and dogs into the toilet, which stinks; " And the river can't impact the accumulated soil. The government should dredge more rivers and prohibit people from throwing rubbish into the water. "

Passerby: "The water used to be very clear, but now everyone's domestic wastewater is discharged from the sewer here." In short, I can only think of an idiom to describe the river situation before and now.

(The photos of the above activities are provided by enthusiastic alumni)

4. Analysis:

After the visit, due to the rich information, it is necessary to sort out the information as soon as possible and write an investigation report.

(3) Project evaluation:

In order to let us know our learning performance and achievements in the process of inquiry learning, we finally conducted mutual evaluation of inquiry learning. Each member evaluates the research attitude, research ability and cooperation spirit of other members. In order to let every member know his gains and losses in the learning process, so as to improve in the future study.

Fourth, the research results:

(1) Causes of water pollution:

1. shipowners and pedestrians litter, regardless of environmental damage for temporary convenience. Because the garbage is all over the toilet flushing surface, the water pollution degree of Jinshui toilet flushing is increased. Fish and shrimp in the pond can't swim in a clean pond from now on;

2. Mud accumulates at the bottom of the toilet flushing, which greatly pollutes the toilet flushing water. It also reduces the impact area and affects the running of the ship;

This factory discharges waste water directly into the river.

4. People discharge domestic sewage into rivers;

The villagers often throw the bodies of some animals into the water, which gives off a stench;

20 17 water pollution investigation report

All kinds of bad factors lead to serious pollution in this toilet flushing, and the toilet flushing water is black and smelly, which affects the breathing of nearby residents, causes great pollution to the environment and air, and seriously affects the city image and people's lives.

(2) the existing crisis

For convenience, some factories usually discharge some waste water into rivers, and even Yifan River in my hometown is facing such a crisis. Therefore, people should consciously do well.

(3) Solution:

1, control pollution sources, especially limit the discharge of pollutants in the middle and upper reaches of rivers, mainly paper mills and metallurgical plants;

2. Plant more trees along the river to conserve water and soil;

3. Reduce sewage pollution and neutralize or precipitate harmful substances in sewage by chemical methods;

4, strengthen people's awareness of environmental protection, do not litter, if found, appropriate fines;

5. Control river pollution, maintain good water quality of water sources and realize sustainable utilization;

6. There is a special person to regularly clean up the river garbage;

7. The factory does not discharge waste water or as little as possible, and the industrial water is recycled after treatment.

Our actions

1. Issue an initiative to protect water resources to all teachers and students.

2. Launch a thousand signature activities with the theme of "protecting water resources and making life really useful forever"

Chapter II: Investigation Report on Water Pollution

Investigation report on water pollution in Shaoxing city

I. Preface:

What we generally call water pollution mainly refers to the phenomenon that human factors directly or indirectly let pollutants into the water body, which leads to changes in the physical, chemical or biological characteristics of the water body, thus affecting the normal use of the water body or endangering people's health and living environment. The sources of water pollution include natural pollution sources and man-made pollution sources. Natural pollution sources generally refer to sludge or organic matter brought by storm runoff on roofs, streets, slopes and ditches. Man-made pollution sources come from people's activities and development.

According to the use, water can be divided into five categories:

Class I: mainly applicable to water sources and national nature reserves.

# Excerpted from 20 17 annual water pollution investigation report. Learn from yourself /end#

Class II: It is mainly suitable for centralized drinking water source first-class protected areas, precious fish protected areas and fish and shrimp spawning grounds.

Three categories: mainly suitable for centralized drinking water source secondary protection areas and general fish protection areas. Four categories: mainly suitable for general industrial water areas and entertainment water areas where human body is not in direct contact.

Five categories: mainly suitable for agricultural water areas and waters with general landscape requirements.

20 17 annual water pollution investigation report The 20th17 annual water pollution investigation report comes from/article/wk-7850000175946.html. Please keep this link!

Second, the investigation motivation:

Water is the source of human life and the milk sweat of living things and human beings. How much life can survive in each area of the earth is first determined by water sources. Because the water consumption per person per day is 5 kg lower.

As far as China is concerned, China is a big country with serious water shortage. Although the total amount of water resources ranks sixth in the world, its per capita possession is less than 1/4 of the world average. In addition, the excessive exploitation of groundwater in cities has caused amazing waste and man-made pollution, and the harm of water resources is increasing day by day. If China was only short of water in arid areas in 1950s, there were as many as 300 cities short of water and more than 40 cities with severe water shortage. It seems that the water crisis has become one of the restrictive factors of China's economic development.

Take Shaoxing city as an example. With the economic development and population growth of this city, the urban sewage discharge shows a sharp increase trend, and the water environment pollution and water resources shortage are increasing day by day.

We are citizens of China and masters of China. It is our college students' responsibility to understand and protect the environment of the motherland. Therefore, through this study, we will understand the general situation of water environment in our hometown in the exploration.

Third, the basic situation:

The scope of this survey is generally Shaoxing. The survey methods mainly include issuing questionnaires, field visits and asking professionals.

Four. Investigation on current situation of water pollution in Shaoxing city

Through the sampling survey of urban river network, we are surprised to find that almost all rivers have been seriously polluted, most rivers have no traces of fish, and some rivers can't even keep loaches alive. Especially in rural areas, due to the increasing population in recent years, a large amount of domestic garbage has accumulated on both sides of the river bank. In the rainy season, a large number of substances harmful to human body flow downstream, which seriously threatens the health of residents on both sides of the strait and directly threatens the original clean water quality of Waihe River. Due to water pollution in many areas, agricultural irrigation has to be pumped into lakes and reservoirs, which leads to more and more water shortage.

We learned about the water pollution in Shaoxing by visiting the Environmental Protection Bureau. The main harmful elements in Shaoxing urban water are lead, cadmium, arsenic, mercury, selenium, nitrite, total trihalomethane, trichloroethylene (organic matter), carbon tetrachloride (organic matter) and so on. The main water pollution elements are phosphorus and nitrogen.

Five, the main pollutants of Shaoxing water resources, pollution causes and classification

Through understanding and analysis, we come to a conclusion and classify the main causes of Shaoxing water pollution: dead organic pollution: it comes from untreated urban domestic sewage, paper-making sewage, agricultural sewage and urban garbage.

Pollution of inorganic chemicals: These chemicals come from wastewater from chemical plants, pharmaceutical factories, paper mills, printing and dyeing factories and tanneries, as well as building decoration, dry cleaning, chemical lotions, agricultural pesticides and herbicides.

The sources of water pollution in Shaoxing are mainly divided into three categories: industrial water, agricultural water and domestic water.

W: During several days' investigation, we passed some factories. The situation is not optimistic. Lava-like liquid flows around some factories, and the stench is enough to knock down bears. When you pass by a winery, you can smell an unpleasant smell from a distance (I can't describe it in detail). The situation of the river next to it can be imagined. According to a survey, more than 85% of the water pollution in this city is caused by industry. Although the city has strict restrictions on industrial emissions, it is found in the survey that individual enterprises "steal emissions" seriously.

Agriculture: In recent years, the extensive use of efficient fertilizers and pesticides in agriculture has not only become the source of soil pollution, but also the direct culprit of eutrophication. A lot of water stinks because of its rich nutrition, as well as irrigation water.

The source has to "ask for help" from lakes and reservoirs, resulting in "contradiction between drinking and irrigation", serious waste of water resources and increasingly "hot" problems.

People: After several days of visits and investigations, we are surprised to find that residents' awareness of environmental protection is extremely low. Many areas say, "You call you, I pour mine", "I bought the water, so I can use it how I want", and what's more, "The tighter your water is, the bigger my faucet is". After visiting and talking, more than half of the residents and two-thirds of the farmers think it is reasonable to dump garbage by the river. There is no grass in the river in the countryside, only white! Coupled with the influx of migrants, the prospects are really not optimistic.

In Shaoxing's water pollution, the proportion of industrial water, in daily life, we can often see colored sewage directly discharged into rivers from pipelines without treatment, which is seriously polluted. Many small factories don't have the ability to purify sewage, so they ignore the long-term development of Shaoxing and only seek immediate benefits and discharge it directly into rivers.

Six, water pollution prevention measures and suggestions

1. Strengthen the treatment of industrial wastewater.

Accelerating the construction of industrial wastewater treatment plants plays a very important role in improving the water environment. At present, with the increase of local population and the improvement of living standards, as well as the further development of factories in our village, the discharge of domestic wastewater and industrial wastewater in our village is increasing, but the sewage treatment plant has not increased accordingly, which will inevitably lead to the continuous decline of water environment quality. Therefore, it is urgent to build more sewage treatment plants. In the prevention and control of water pollution, according to the principle that prevention is better than cure, appropriate planning must be completed in advance. Therefore, pre-examination and preventive measures should be taken for newly built or expanded leather factories and other similar polluting industries.

2. Improve the river environment

In order to improve the river environment, all aspects of river and bank regulation should be carried out as soon as possible. First of all, the pollution sources should be treated to prevent the wastewater and domestic garbage from factories and canteens from being directly discharged into the water, and centralized treatment should be carried out to avoid its adverse impact on the environment. It will also rectify the waterway and further remove the garbage and silt in Hanoi, which can mobilize coastal residents and

Use a large machine to remove. Finally, plant trees along the river, (20 17 insurance survey report) plant turf, and establish green belts to avoid soil erosion.

3. Pollution treatment

Encourage effective use of resources and recovery of by-products to reduce waste emissions and implement industrial waste reduction strategies. Many pollution behaviors are the loss of precious resources in the production process, which invisibly increases the production cost and causes serious pollution behaviors. Prevention and control should start with the improvement within the factory, including assisting and suggesting the factory to improve manufacturing methods and procedures, improving production management, and improving efficiency to reduce pollutant emissions.

4. Enhance citizens' awareness of environmental protection

To improve the environment, we should not only control it, but also enhance residents' awareness of environmental protection through publicity in all aspects. The agricultural department of the government or other relevant departments shall take measures to guide farmers to use chemical fertilizers and pesticides scientifically and rationally, control the excessive use of chemical fertilizers and pesticides and prevent water pollution. Residents' awareness of environmental protection has increased. Acts that damage the environment will naturally decrease.

5. Realize the recycling of wastewater.

With the development of economy, the discharge of industrial wastewater will increase. If we only pay attention to the end treatment, it is difficult to improve the current water pollution situation, and we should realize the resource utilization of wastewater.

VII. Investigation experience

Through this investigation, I will fully realize the urgency of protecting water resources and treating sewage. Economic development cannot be at the expense of water resources on which we depend, but people themselves are also affected by the destruction of water resources. We should fully understand the relationship between water resources and people and the disadvantages of people changing the water environment at will. The factors that cause water pollution are far more than these. Although my investigation is not mature enough, I hope to improve the status of water pollution in people's daily topics, make people realize the importance of protecting water resources and gradually solve the water pollution problem.

20 17 water pollution investigation report

Discussion on the influence and prevention of water pollution

Some people say that the color of the earth is green, which breeds life and indicates the birth and future of mankind. I said, she is the cradle of life and the mother of mankind. She gave all her love selflessly to the children and grandchildren of mankind. She is indeed very big and has a vast territory, but it is not endless; She is really beautiful, beautiful, but she will not be young forever; She is indeed rich and rich in resources, but she is not inexhaustible.

Nowadays, the ecological environment of the earth has been seriously damaged by human activities. In particular, water pollution is more prominent.

First, let's look at a funny and sad story. A tractor in Gezhouba Reservoir stalled because there was no oil. When the driver saw pieces of oil slick in the tank, he scooped up the oil slick in a bucket and poured it into the tank. The tractor suddenly drove away. It can be seen that the seriousness of water pollution in China, our city is located in the subtropical monsoon region in the lower reaches of Jiulong River, and is rich in fresh water resources. 65,438+00 years ago, you could find drinking water not far from home. However, with the development of economy and the improvement of people's living standards, water pollution is becoming more and more serious. Now, most rivers in our city are not drinkable, and some rivers can't even be used for washing. People can only rely on waterworks to supply water for daily life. Once, water was one yuan and fifty cents.

Water is the lifeblood of everything on earth. Water nourishes everything, breeds life and creates civilization. The distribution of water resources in China is extremely uneven. China's per capita water resources are less than 500 cubic meters, far below the internationally recognized critical value of per capita 1 000 cubic meters. Many large and medium-sized cities in the north stopped production or limited production due to lack of water, resulting in an annual loss of 654.38+0.2 billion yuan, and some cities in the south also experienced water shortage. At present, more than 300 cities in China are short of water, of which the serious water shortage is 108, and the water shortage is about100000 tons/day. Millions of people lack domestic water. ...

20 17 water pollution investigation report, various reports

Facing the water resource of "dripping water is as expensive as oil", it is distressing for human beings to waste and pollute it: according to statistics, the global sewage discharge has reached 400 billion cubic meters, and the polluted water body is 5.5 trillion cubic meters, accounting for more than 14% of the total global runoff.

Water, air and food are the three elements of human life and health.

50% to 60% of human body weight is water, and the water content in children is as high as 80%. Without water, there is no life. The fresh water resources on the earth only account for 3% of the total water resources on the earth, and only 0.5% of these 3% fresh water can be directly drunk. Therefore, water is a precious resource for human beings and the source of life.

However, water pollution is quite common and serious in the world. When harmful substances in water exceed the self-purification ability of water, pollution will occur. These harmful substances include toxic substances such as pesticides, heavy metals and their compounds, various waste gases and radioactive substances.

The source of water pollution is mainly untreated industrial wastewater and domestic wastewater.

Dead organic pollution comes from untreated urban domestic sewage, paper-making sewage, agricultural sewage and urban garbage. Dead organic matter will consume dissolved oxygen in water and endanger the survival of fish; It can also lead to lack of oxygen in water, leading to the death of microorganisms that need oxygen. It is these aerobic microorganisms that can decompose organic matter and maintain the self-purification ability of rivers and streams. The consequences of their death are: rivers and streams turn black and stink, and toxins accumulate, hurting people and animals.

Pollution of organic and inorganic chemicals These chemicals come from wastewater from chemical plants, pharmaceutical factories, paper mills, printing and dyeing factories and tanneries, as well as building decoration, dry cleaning, chemical lotions, agricultural pesticides and herbicides. Most organic products will accumulate in aquatic organisms, leading to poisoning after eating. The water polluted by organic chemicals is difficult to purify, and the drinking water safety and health of human beings are threatened.

20 17 water pollution investigation report

I. Reasons for investigation

With the development of science, the progress of the times and the rapid growth of population, the environment on which human beings depend for survival and development is polluted, the ecological environment is destroyed and the ecosystem will be destroyed. Environmental problems have gone from regional to global, and human beings must care for the earth, care for and solve global environmental problems. Because we "have only one earth."

Water is the source of life. Without water, our life will not go on. The pollution and shortage of water resources are the main problems facing the society today. Although our city is not a city short of water, water pollution exists and is closely related to every citizen. To this end, I investigated the water pollution situation in our city by asking questions.

Second, the investigation process

Step 1: Field investigation. First of all, my dad and I came to Chang 'an Air Traffic Control Station and learned about the rivers in Chang 'an Town from my dad's old classmate Liu Haihua. Then, I took a speedboat and visited Chongchang Port, Changshanhe Port and Taishan Port. Along the way, Uncle Liu Haihua introduced me that these rivers were the main waterways near Chang 'an Town decades ago, and the water was very clear and transparent. Now the garbage is all over the river, and a bad smell is coming. The main cause of water pollution: human factors: wastewater from factories in the upper reaches of the Nihe River is discharged, and urban sewers are placed here. Sewage is discharged into the river through pipelines, and a large number of farmland near the Nihe River is flooded by chemical substances such as fertilizers and pesticides used by farmers, resulting in excessive growth of algae, massive death of fish, poor environmental awareness of residents, and frequent dumping of domestic garbage into the river.

The second step: investigation and analysis. After on-the-spot investigation, I think the harm that water pollution brings to residents. Groundwater pollution makes it difficult to use water, river water pollution seriously breeds a large number of mosquitoes, and river water emits irritating odor, which has adverse effects on people's health.

Third, the conclusion of the investigation.

In order to improve the river environment, all aspects of river and bank regulation should be carried out as soon as possible. First of all, pollution sources should be treated to prevent factories and pig farms from directly discharging sewage and feces into rivers for centralized treatment to avoid adverse effects on the environment. Then, the building materials (waste) in the riverside and river channel will be removed, and the navigation channel will be rectified to further remove the garbage and silt in Hanoi, which can mobilize coastal residents and use large machinery to remove them. After that, plant trees and turf by the river and establish green belts to avoid sand loss.

In order to protect the river environment, we should strengthen the management of nearby factories and pig farms, seriously deal with the behavior of polluting rivers, and educate coastal residents and all citizens on environmental protection to enhance their awareness of environmental protection. The river environment mainly depends on everyone's ideology, so people should consciously protect the river and protect the environment. In this way, a brand-new river will be presented to people forever.

How to write the survey report, how to write the market survey report, the format of the survey report, and the survey report on going to the countryside.

Environmental investigation report, college student investigation report, middle school student investigation report and rural education investigation report.

In a word, it should be clear that people themselves are also affected by environmental damage. We should fully understand the relationship between environment and human beings and the advantages and disadvantages of human beings changing the environment. The factors that affect water resources are far more than these. Although our investigation and study may not be mature enough, we hope to improve the status of environmental problems and water pollution problems in people's minds and make the problems improve day by day.