Jiangsu Surabaya acid rain frequency in the first half of each rain "acid"

What is the frequency of acid rain in Jiangsu (Jiangsu)? Yesterday morning, a national environmental quality report caught the attention of Nanjing citizens. In announcing the first half of the environmental situation in the first half of the year, Tao Detian, a spokesperson for the Ministry of Environmental Protection, stated that there were acid rain in 189 cities across the country, and the frequency of acid rain in eight cities (regions) including Jiangsu's Qinshui County was.

Tao Detian said that the monitoring indicators in the first half of 2010 showed that the pollution control situation in China is still severe, mainly reflected in the fact that the overall surface water in the country is moderately polluted. Classes IV and V accounted for 26.4%, while those for inferior class V accounted for 24.3%. The main over-standard items are ammonia nitrogen, biochemical oxygen demand and permanganate index for five days.

Tao Detian said that the acid rain pollution is still heavy. Of the 443 monitored cities, 189 had acid rain. The frequencies of acid rain in 8 cities (regions) including Guang'an City in Sichuan Province, Lishui County in Jiangsu Province, Nanhui District in Shanghai, Yingtan and Ruijin City in Jiangxi Province, Taizhou and Wenzhou City in Zhejiang Province, and Xiamen City in Fujian Province are frequency. In most areas of Zhejiang, Jiangxi, Hunan, Fujian, and Shanghai, acid rain is concentrated in central Guangdong, northern Guangxi, northeastern Guizhou, eastern Sichuan, southern Chongqing, western Hubei, and southern Anhui.

Lishui County, acid rain really?

it is true! Every rain in the first half of the year is "sour"

This notification made the Nanjing citizens feel very surprised. Did the floods in the field be sour? The reporters are equally surprised that in Nanjing, the pH of rainwater is indeed relatively high, which is reflected in the annual Nanjing White Paper, but the frequency is generally around 80%, that is, 8 acid in 10 rains.

In the first half of this year, how did every rainwater become "sour"? The reporter contacted the Department of Education of the Ministry of Environmental Protection. The staff said: The data they released was definitely correct. These data were reported by the local government. In response, the reporter confirmed the Nanjing Municipal Environmental Protection Bureau. The relevant person in charge of the Bureau affirmed the statement that the monitoring data was reported to the country on a daily basis as required. In the first half of the year, the incidence of surging acid rain has indeed reached.

Why do we have high frequency of acid rain?

Soil acid, light rain is mostly the main reason

According to experts from the Nanjing Environmental Monitoring Center, the distribution of acid rain in Nanjing is often stronger in the suburbs than in the urban areas, and it is stronger in the southern suburbs than in the northern suburbs. The reason why the acid rain in the urban areas is low is that the dust in the air is alkaline, which neutralizes the acidic substances in the rain to a certain extent, which makes the frequency of acid rain greatly reduced.

The monitoring found that the soil in the suburban muddy water was acidic, and the acidic soil dust encountered acid rain, and the natural acid rain pollution was relatively serious. And acid rain is often difficult to occur in heavy downpours, because a heavy rain dilutes the acidity, and it is easy for light rain and even drizzle to form acid rain. In the first half of the year, the total amount of rainwater in Nanjing was relatively low, and most of the rain was small, which was the main reason for the high frequency of muddy water.

Is it related to a local factory?

After experimenting, the rain of the drowning water was bigger than that of Dachang sour.

Of course, the influence of local and external factors cannot be ruled out. “Sulfur dioxide and nitrogen oxides are important reasons for the formation of acid rain,” Liu Hongnian of the Nanjing Academy of Atmospheric Sciences said. Because human activities have become more and more obvious to the atmosphere, the exhaust gas from local factories and the exhaust gas emitted from automobiles will cause rainwater into the atmosphere. Change to "acid".

“Moreover, the formation of acid rain is also related to the long-distance transport caused by atmospheric motion. The drift of foreign pollutants is also a factor.” The water outlet of the Suxichang Industrial Zone in Lishui County is also affected by the drift of pollutants.

And how much of the influence of these factors account for? Environmental experts said that they had experimented with large factories and waters that belonged to the chemical industry area and found that, also in the downwind, the rainwater of the big plant was neutral as a whole, while the drowning water was very acidic. The same chemical park area is also affected by foreign pollution, but the extent of acid rain is not the same. This shows that the two areas are mainly affected by the soil. The Dachang plant soil is neutral, and the muddy water is acidic.

Does acid rain affect health?

Great impact on buildings and water, little impact on people

Experts said that in the first half of the year, the acid value of drowning was about 4 to 5. This kind of acidity is often encountered in our lives. Everyone eats fish, meat, rice, liquor, and animal organs, all of which are acidic. In general, the body's gastric acid pH is 2.0, Coke 2.5, vinegar 2.9, beer 4.5.

"This acidity of rain is far inferior to vinegar. How much harm will your body suffer from dripping your vinegar on your hands?" said Liu Hongnian, and it is impossible for people to soak in the rain every day. In addition, for some people think that rain will cause skin cancer, he thinks this statement is ridiculous. The main cause of cancer is the lesions of cancer cells, which are acidic in acid rain and do not contain radioactive elements that cause cancer.

However, it is undeniable that acid rain will pollute plants, buildings and water even more. The soil is washed by acid rain, which accelerates the acidification process. The loss of nutrients in the soil and minerals will affect plant growth, and acid rain will corrode buildings and pollute the water.

Is the source of drinking water in Surabaya affected?

Strictly control the tap water's pH, all qualified!

The pollution of the water body by the acid rain is sure to exist. Is it safe to drown drinking water? The person in charge of the Nanjing Environmental Protection Bureau of Yishui County stated that based on previous monitoring data, it has not been found that the source of drinking water is affected by acid rain and acidity is exceeded.

According to reports, the source of drinking water in Surabaya comes from seven major reservoirs, such as Dongping Lake and Zhongshan Reservoir. There are no chemical companies around the seven water sources. When the acid rain begins to fall into the reservoir, it will affect its PH value, but the water source will enter. After the water plant, the water plant strictly monitors the pH of the drinking water and adopts appropriate methods to deal with it. Only after reaching the water standard can the water enter thousands of households. Therefore, the drinking water that enters the citizens' home is qualified and assured.

Next:Installation, use and regulation of marine diesel generator sets
Previous post: Visitors refused shopping and were insulted by female tour guides