Desen's heavy metal contaminated soil washing equipment says “no” to soil lead contamination!
铅不是植物生长的必需元素，但却是一种重要的环境污染物。当土壤中铅元素过多，超过土壤自净能力，就会引起土壤的组成、结构和功能发生变化，从而抑制微生物活动，导致有害物质或其分解产物在土壤中逐渐积累，通过“土壤→植物→人体”或“土壤→水→人体”间接被人体吸收，达到危害人体健康的程度。目前，全世界每年排放约
Lead is not an essential element for plant growth, but it is an important environmental pollutant. When there is too much lead in the soil, exceeding the self-purifying ability of the soil, it will cause changes in the composition, structure and function of the soil, thus inhibiting microbial activities, leading to the gradual accumulation of harmful substances or their decomposition products in the soil, which will be indirectly absorbed by human bodies to the extent that it jeopardizes human health through the process of “Soil→Plant→Human Body” or “Soil→Water→Human Body”. “Indirectly absorbed by the human body, to the extent of jeopardizing human health.
At present, the world's annual emissions of about 5 million tons of lead, most of which enter the soil, resulting in different degrees of lead pollution in the soil of countries around the world. According to statistics, in the vegetables, grains, fruits, meats and livestock products in the suburbs of large and medium-sized cities in China, the exceeding rate of lead is 38.6%, 28.0%, 27.6%, 41.9% and 71.1% respectively.
In terms of lead contaminated soil treatment, there has been some progress in the field of physical and chemical remediation technology, and the use of chemical washing remediation technology is not an effective way of treatment. Desen washing car, is the first mobile soil washing remediation equipment, can be applied to contaminated soil (chemical industry, pharmaceuticals, metallurgy, petrochemicals, mining and other industrial sites) physical and chemical washing remediation, to achieve the hexavalent chromium, lead, cadmium, zinc, arsenic and other heavy (non-) metals (except Hg), semi-volatile organic compounds, petroleum hydrocarbons, such as a single or composite contaminated soil washing treatment.
DCS distributed electronic control system is adopted in the mobile washing remediation equipment to realize decentralized control, centralized operation and monitoring of the equipment, hierarchical management, and reliable exchange of data at all levels through the bus without affecting each other. The equipment also adopts 5G cloud-based IOT technology to realize the digitalization, networking and intelligence of the equipment operation status.
Modularized design of the equipment, inter-module pipeline flange docking can be run, greatly shortening the cycle of equipment in and out of the field, reducing the project operating costs.
Equipment vehicle design is novel, the appearance of the size of the road transportation requirements, trailer traction flexible transfer, not subject to geographical constraints.
In addition to “treatment”, “prevention” is also crucial. At present, to improve people's awareness of the prevention and control of lead pollution is a top priority, through the media platform to widely publicize the hazards of its soil lead pollution, say “no”, is also a measure we should take.
