Study On Different Improvement Models Improve High Silicon Iron Tailings

The existence of iron tailings caused serious pollution to the environment and caused harm to the human production and life,so the vegetation restoration of iron tailings has become an urgent task in our country.This article through to the analysis of the composition and physical and chemical properties of high silicon iron tail from the Jianlong Mining co.,LTD.in Kuancheng,the mushroom residue and sludge conditioner,there is a series of soil culture experiment was carried out on the tail of iron ore by composite modifier made from both the mushroom residue and sludge mixed with fly ash,bentonite and PAM.This article to evaluate the result of the improvement by measuring index such as the volume weight modified iron tail sand,pH,moisture content and heavy metal content,as well as the plant leaf number,plant height,fresh weight,dry biomass and heavy metal content.The mushroom residue or sludge composite material increased with the amount of additive is remarkable affect the physical and chemical properties of iron tail ore.Through this study makes a comprehensive comparison between the experimental treatment scheme.For bulk density index,treatment group G5(120 g),improved the effect best,its ratio of iron ore in gross weight 2 kg mushroom residue containing 120 g.For pH indicator,WF1 treatment group(20g)improved the best effect,the pH is 7.03,closer to the neutral environment.The proportion for iron ore total weight 2 kg contains 60 g mushroom residue and 20 g of fly ash.The treatment group G4(100 g)for moisture content index,improved the best effect by compared with the control group,the moisture content increased by 15.12%,more suitable for the growth of plants.The proportion is the tail of iron ore in gross weight 2 kg mushroom residue containing 100 g.The heavy metal content for the tail of iron ore index,considering the material usage and price factors,choose WM4(15 g)as the best ratio of modified,for iron ore in gross weight 2 kg sludge containing 80 g and 15 g of PAM.This test using the mushroom residue or sludge composite material to improve on tail of iron ore,the plant as a whole are sharply higher than the control group(CK),the modified iron tail ore more conducive to the growth of the plant,rapeseed growing significantly better than cabbage.The composite material has significant effects on plant in the comprehensive situation.Through this study makes a comprehensive comparison between the experimental treatment scheme,for Chinese cabbage,treatment group WP4(80 g)improved the best effect,its ratio of iron ore in gross weight 2 kg sludge containing 80 g and 80 g of bentonite.For rape,treatment group WF2(40 g)and WM2(5 g)improved best,its ratio of iron ore in gross weight 2 kg contains 80 g sludge and 40 g of fly ash or iron ore total weight 2 kg of sludge containing 80 g and 5 g of PAM.Because of the growth cycle is shorter,in a limited observation time,and in comparison with the standard?Safety of agricultural products quality-pollution-free vegetables safety requirements(GB 18406.1-2001)?,each treatment group and medium-term the cultivation of Chinese cabbage leaf parts can meet the food hygiene standards,whereas the roots.For longer plant growth cycle,the edible safety needs to be discussed further.