Environment-friendly type underwater non-dispersible sludge curing agent for ecological restoration

Abstract

The invention discloses an environment-friendly type underwater non-dispersible sludge curing agent for ecological restoration. The environment-friendly type underwater non-dispersible sludge curing agent is prepared from the following raw materials in parts by weight: 5 to 30 parts of clinker, 2 to 8 parts of a waterproof agent, 2 to 5 parts of bentonite, 2 to 5 parts of lime, 5 to 8 parts of gypsum, 0.04 to 1 part of a water dispersion resisting agent and 0.5 to 5 parts of an exciting agent, wherein the clinker is a mixture of silicate and aluminate. The product can be used for hardening various sludge in water and improving an aggregate structure of the sludge and can be used for sealing toxic and harmful substances including heavy metal ions, cyanide, fluoride and the like; production and preparation and application processes of the product does not cause toxin and pollution and environmental hazards are not caused; the sludge treated by the product has the characteristics of relatively good whole water dispersion resisting performance and water flow scouring resisting performance, a rapid hardening speed, no need of special curing and the like; plants can grow on the sludge and caves for inhabitation can be built on the sludge, so that an ecological diversity function is met; the restoration of the ecological environment is facilitated and the utilization effect is good.

Description

technical field [0001] The invention relates to the field of sludge solidification, in particular to an environment-friendly underwater non-dispersible sludge solidification agent for ecological restoration. Background technique [0002] my country has abundant resources of rivers, lakes and tidal flats. However, river, lake and tidal flat silt has the characteristics of high water content, high compressibility, low permeability coefficient, and high content of organic matter. Seriously, it is difficult to improve the ecological environment, making it difficult to realize the scientific and rational utilization of river, lake and tidal flat resources. [0003] Sludge solidification technology is a technical process for sludge solidification and stabilization developed in recent years. A small amount of active ingredients in silicon and aluminate clinker are activated by the sludge solidification agent to further activate the activity of some components in the sludge and cemen...

AI Technical Summary

Problems solved by technology

At present, many sludge curing agents have been developed for various types of sludge, but the treatment effect of various sludge curing agents is not ideal. Although it can treat high water content and high organic matter sludge, the curing effect in water is not good, and it has not achieved environmental protection. Requirements; and the curing agent that can meet the requirements of environmental protection cannot be directly carried with water for construction work, and some need to be treated to reduce the moisture content to be cured, the treatment process is complicated, and the cost is high