Arbor Day: If you want trees to grow well, soil pollution remediation testing is indispensable

Today (March 12) is the 43rd Arbor Day. Today, with the increasing voice of environmental protection, the Arbor Day is an important festival that actively advocates the general public to plant trees and afforestation. heart. Now,“Clear waters and lush mountains are invaluable assets”The idea of ​​​​has long been engraved into people's bones and hearts. Every Arbor Day, people will carry a hoe and saplings to the barren hills, just to plant a piece of green for the earth. So after the trees are planted, the survival rate and growth rate have a lot to do with the soil. In some places with poor soil and polluted soil, the soil needs to be improved and repaired before it can be used for planting trees or farming. At this year's National Two Sessions, General Secretary Xi Jinping pointed out when participating in the deliberation of the Inner Mongolia delegation that it is necessary to continue to fight the tough battle of pollution prevention and control, and strengthen the comprehensive control of air, water and soil pollution. In the development of the environmental protection industry in the past few decades, it has roughly gone through the process of starting from water pollution control, to air pollution control, and then to soil pollution control. Soil pollution is called“invisible pollution”, has the characteristics of concealment, accumulation, complexity, irreversibility, etc., the treatment is difficult, the cycle is long, and the cost is high. In addition, some heavy metal enterprises in my country have a large amount of waste gas and wastewater discharge, excessive use of pesticides and fertilizers, and soil pollution. Prevention and control work still has a long way to go. In the face of increasing soil pollution, the state has also successively issued a series of policies to support the development of the soil remediation industry. The state attaches great importance to the soil remediation industry. So what are the contents of soil pollution testing, and what testing needs to be done on the restored soil? What are the repair detection methods? The project of soil remediation testing is mainly to detect pollutants and toxic and harmful components in the soil, including pesticide residues, heavy metal content, solid waste content, radioactive material detection, inorganic non-metallic content, etc. In addition, in order to test whether the soil is suitable for planting, routine testing of soil should be carried out, including soil moisture, biological indicators, bacterial colonies, Escherichia coli and other flora testing, antibiotic testing, soil organic matter testing, various metabolites analysis, etc. Soil remediation detection methods use different methods according to the different items to be detected, mainly including gas chromatography, ultraviolet spectrophotometry, ion chromatography, frequency domain reflectometry, atomic absorption spectroscopy, atomic fluorescence, flame atomic absorption spectrophotometry Wait. During the two sessions this year, a number of deputies proposed to strengthen the supervision and inspection of soil pollution prevention and control, and take the goal of soil pollution control as the goal.“fourteen five”During the period, the important indicators of environmental assessment will be ensured to ensure the full implementation of various measures. At the same time, scientific research units and agriculture-related colleges and universities are encouraged to set up multi-disciplinary research teams for soil pollution prevention and control, and form a complete set of technical systems for soil environmental investigation, risk assessment, risk management and control, governance and restoration, and effect assessment. Provide technical support for soil pollution. In view of the complexity of soil pollution, future soil pollution status investigation, monitoring system construction, and investment in soil pollution control equipment and technologies will be long-term work, and the market space for soil pollution remediation will continue to be released. For the soil remediation industry, technology maturity, adaptability and industrialization will be the core of enterprise competitiveness. Planting trees is our constant promise with spring. The land under our feet is greener and more beautiful, leaving healthy soil.
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