OCI soil improvement control soil pollution
OCI soil improvement control soil pollution
The situation of land pollution in China, especially the pollution of cultivated land, is quite severe: First, the degree of pollution has intensified. According to incomplete investigations, there are currently about 150 million mu of arable land polluted in the country, 32.5 million mu of arable land contaminated by sewage irrigation, and 2 million mu of land occupied and destroyed by solid waste, which together account for more than 1/10 of the total arable land. . The second is the huge pollution hazards. It is estimated that 12 million tons of grains are polluted by heavy metals in the country every year, causing direct economic losses of more than 20 billion yuan. Soil pollution causes harmful substances to accumulate in crops and enter the human body through the food chain, causing various diseases and ultimately endangering human health. In order to control and eliminate soil pollution, we must first control and eliminate soil pollution sources, strengthen the treatment of the industrial "three wastes", and rationally apply chemical fertilizers and pesticides. At the same time, prevention and control measures must be taken, such as planting plants with strong absorption capacity to reduce the content of toxic substances according to the types of soil pollutants (for example, plants of the fern family Asplenium can absorb heavy metals in the soil); or through Biodegradation and purification of the soil (for example, earthworms can degrade pesticides, heavy metals, etc.); or applying inhibitors to change the direction of migration and transformation of pollutants in the soil, reduce crop absorption (for example, application of lime), increase soil pH, and promote cadmium, mercury, Copper, zinc, etc. form hydroxide precipitates. In addition, it is also possible to control soil pollution by increasing organic fertilizer, changing the farming system, changing soil, and deep ploughing.
(OCI) The company will continue its 5A service commitment, wholeheartedly provide compliance technical support for soil improvement, and escort R&D products to be listed in compliance.
