Treating Nano-micron Modified Cementitious Materials with Contaminated Sediment from Rivers and Lakes

Abstract

The invention provides a nano-micron modified gelling material for processing polluted bottom mud of rivers and lakes, including pre-gelling material, hemihydrate CaSO4 and nano silicon dioxide, and the total mass of raw materials of the pre-gelling material is 100 %, the pre-gelled material is made of the following raw material components in the following mass percentages: active SiO2: 37.0-45.3%; active Al2O3: 14.6-25.5%, active CaO: 12.5-21.8%, active Fe2O3: 6.8‑17.5%, active TiO2: 0‑2%, active Na2O: 1.5‑2.5%, active MgO: 1‑2%.

Description

technical field [0001] The invention belongs to the technical field of bottom mud treatment, and in particular relates to a nano-micron modified gelling material for treating river and lake polluted bottom mud. Background technique [0002] Sediment is an important part of the muddy water environment, a basic factor for the existence and development of social and economic systems, and plays a vital role in supporting the regional national economic development. Due to the accumulation of history and the recent rapid development of economic construction and other reasons, more than 90% of cities in my country have increasingly severe muddy water environment problems, mainly manifested in serious siltation of urban rivers, shortage of water resources, excessive water pollution, and damage to water ecological balance. Wait. The increasingly serious problem of muddy water environment has led to more and more serious obstacles to the sustainable development of cities, and the livi...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a nano-micron modified gelling material for river and lake polluted sediment treatment, aiming to solve the problem that the existing curing agent has poor curing effect and cannot effectively reduce the concentration of organic matter and heavy metals in the sediment

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