Sludge-dredging ecological modifier and preparation method and application thereof

Abstract

The invention discloses a sludge-dredging ecological modifier and a preparation method and an application thereof. The sludge-dredging ecological modifier is prepared from the following components inpercentage by weight: 5-15% of Wyoming bentonite, 40-50% of slag wet concentration tail mud, 10-20% of ground mullite powder, 20-40% of ground blast furnace slag powder, 0.1-1% of a polymer of triethanolamine and methyl epoxypropane and 0.3-3% of FDN, totaling 100%. The components of the environment-friendly sludge-dredging ecological modifier are researched deeply, the problem of sludge treatmentdemand of a lake and resource utilization of industrial wastes is solved, the invention provides the sludge-dredging ecological modifier which is good in sludge modifying effect, low in production cost, high in engineering usability and low in equipment condition demand, and resource utilization of the dredged sludge in the neighborhood can be achieved quickly.

Description

technical field [0001] The invention relates to an environment-friendly ecological modifier for dredging silt, in particular to an environmentally friendly dredging silt ecological modifier for river dredging or ecological restoration of lake bottom mud whose main raw material is metallurgical waste residue and a preparation method thereof And application, this technology belongs to the field of environmental protection technology. Background technique [0002] First of all, my country's metallurgical industry has achieved world-renowned achievements after decades of rapid development, but also produced a large amount of industrial solid waste, such as steel slag, water slag and construction waste. With the advancement of industrialization, these wastes have gradually caused prominent social contradictions. On the other hand, with the advancement of urbanization and industrialization, most rivers and lakes are seriously polluted, forming black and smelly water bodies that a...

AI Technical Summary

Problems solved by technology

The first is to strengthen the means of chemical modification to consolidate the organic matter and water in the sediment in the consolidation body, thereby changing the phase and state of the sediment and achieving the purpose of engineering treatment. The consolidated sediment can be It is used as engineering filling back soil, but the alkalinity is generally high, which is easy to cause salinization phenomena such as frost, and has a certain degree of impact on the surrounding environment. In addition, its requirements for raw and auxiliary materials and cost are relatively high, which is not conducive to Large-scale promotion and industrial production; the second is to rely on the chelation or coupling of the chemical agent itself to combine the toxic components in the sediment, such as persistent organic matter and heavy metals, on the chelate through chemical bonds, so as to achieve anti-toxicity. For soil stabilization treatment, the dosage of this agent itself is relatively large and the cost is high. At the same time, it is not conducive to improving the sludge performance of the bottom sludge. It still faces great difficulties in post-processing and transportation. At present, most of this agent in the domestic market is Imported, the core technology is in the hands of developed countries, which restricts the large-scale application and promotion of this technology in my country

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