Organic Regulation and Remediation of Pollution of Chaolin Soil in Shandong

Abstract

In recent years, due to the frequent occurrence of excessive heavy metal content in the cinnamon soil in the Shandong region of China, the country and people have attached great importance to the pollution of heavy metal in the cinnamon soil. Heavy metal pollution has a wide range and long duration. Once it enters the human body, it will cause serious harm to human health. Therefore, the prevention and control of heavy metal pollution in Chaoshan soil in Shandong will be one of the focuses of current and future development in the field of environmental protection. In this paper, by sampling and analyzing the pollution of Chaozhou brown soil in Shandong area, the content range of heavy metals, accumulation and pollution of heavy metals in Chaozhou brown soil in this area were evaluated. Five organic regulators calcium-based mineral A and calcium On the effects of mineral B, biomass charcoal D, peat H and limestone E on the leaching toxicity of Cd in Chao cinnamon soil, three different types of organic regulators A, D and E were investigated in single and mixed application of Under the influence of the effective state of Cd, the compound organic regulator ADE with the best repair effect and its proportion were selected. The experimental results show that the organic mixed modifier shows a good reduction effect on the Cd effective state content in the heavy metal composite polluted tidal cinnamon soil, in which the mixed organic modifier 0.5% peat + 0.25% vermiculite + 0.25% bone meal Stone: Bone meal is 2: 1: 1) The best reduction effect.