What are the cases of soil pollution in China?

1. Gansu lead pollution incident12 In September 2006, Gansu lead pollution incident caused 354 people in Xinsi and Mouba Village, Shuiyang Township, Huixian County, Longnan City, Gansu Province, and 179 people were hospitalized due to excessive blood lead. Among them, 65438+ 17 1 is under 04 years old, and 8 people are over 0/4 years old.

The land within 400 meters around Huixian Nonferrous Metals Smelting Co., Ltd., which caused the accident of blood lead exceeding the standard, has all been polluted. The environmental monitoring station of Longnan Environmental Protection Bureau preliminarily monitored the soil total lead concentration at seven monitoring points within 400 meters around Huixian Nonferrous Metals Smelting Co., Ltd., and found that the total lead concentration in the surface soil of 1-5 cm was 16- 187 mg/kg, which exceeded the background value of 0? 83—2? 46 times; 15-20cm The total lead content in the topsoil is 0? 69— 1? 8 times, there are two higher than the background value of 5? 2— 12? More than twice as much.

Second, the cancer phenomenon in Longling Village, Shaanxi Province Longling Village, Guapo Town, hua county City, Shaanxi Province is an independent natural village, located on a promontory shaped like a dragon ridge 8000 meters away from hua county County. Since the first case of esophageal cancer was discovered in Murakami in 1974, 55 people died in the village, 30 of them died of cancer, the rest died of cor pulmonale and cerebrovascular diseases, and no one died of natural causes. The population of the village has dropped sharply from 154 to 77, and the number of cancer patients and deaths has increased year after year, showing a trend of youthfulness. Longling village has been shrouded in cancer for decades, and finally it is found that the soil pollution in this village is very serious.

4000 meters northwest of Longling Village is Shaanxi Chemical Fertilizer Plant and Compound Fertilizer Plant. The northwest wind blows the suspended particulate pollutants scattered by plants to Longling Village, and pollutes the air, water, cultivated land, non-cultivated land, indoor land and food crops in the village with lead, chromium, arsenic, copper, zinc, nickel, manganese and phosphorus. The lead content of locally produced flour exceeds the national standard 1? 6 times, belonging to heavy pollution; Does chromium exceed GB 2? 98 times, which is a serious pollution; Cadmium, lead, mercury, arsenic and chromium in celery all exceed the standard, of which mercury exceeds the standard 16 times and lead exceeds the standard by 83? 5 times, belonging to super pollution; Cadmium, lead, mercury, arsenic and chromium in Bupleurum DC. Exceeded the national standard 9 1? 5 times; Lead in the leaves of beans exceeds the national standard by 0 times 1965438+. Is chromium in walnut higher than GB 2? 9 times; Lead in rapeseed exceeded the standard by 75 times.

Third, the "joke" caused by Shen Fu irrigation canal

Shenfu irrigation canal, 196 1, with a total investment of more than 50 million yuan and a total length of nearly 100 kilometers. It flows through Shenyang and Fushun counties 1 1 villages and towns. At the beginning, the canal was built to protect the water sources along the Hunhe River in Shenyang and Fuzhou, mainly to lead out the domestic sewage and industrial wastewater in Fushun.

At that time, people were pleasantly surprised to find that the crops in the irrigation canal basin grew well with high yield, with an irrigation area of 6.5438+0.5 million mu and a beneficiary population of more than 200,000. People call this irrigation canal "Mi River". For China, which is in a "three-year natural disaster" and food shortage, Shenfu irrigation canal has become a typical example of using sewage to "turn waste into treasure" to irrigate farmland. According to experts' analysis, the original Shenfu irrigation canal mainly receives domestic sewage, while the wastewater containing ammonia nitrogen and other components discharged by several oil companies is equivalent to the application of chemical fertilizer.

With the rapid development of industry and the rapid increase of population, the water quality of Shenfu irrigation canal is deteriorating due to the long-term accumulation of various pollutants in the irrigation canal. Years' follow-up investigation by Shenyang Institute of Applied Ecology, Chinese Academy of Sciences shows that the water body of Shenfu irrigation canal is seriously polluted, which has led to coastal soil poisoning, crop yield reduction and large pollutant residue. However, a report by the health and epidemic prevention department of Liaoning Province clearly shows that the prevalence rate, terminal disease rate, mortality rate and teratogenesis rate of people in Shenfu irrigation and drainage area are obviously more than twice as high as those in Qingshui area.

At that time, Shenfu Irrigation Canal was promoted to the whole country as a typical sewage irrigation, and even went to the United Nations to introduce experience. Now that I think about it, it's a good thing I didn't go, otherwise it wouldn't be a joke.