Sludge curing agent and sludge curing method using same

Abstract

The invention discloses a sludge curing agent and a sludge curing method using the same, relating to the field of sludge treatment. The sludge curing agent is prepared by the following method: firstly mixing seven components including expansible graphite, cement, coal ash, carbon black, silicon powder, porcelain clay and quick lime, leading the expansible graphite to expand under the condition without being lower than the expansion temperature of the expansible graphite, stirring mixture and obtaining a semifinished product; adding two components including expansion resin and water glass, stirring together, mixing fully and preparing the curing agent. The sludge curing agent disclosed by the invention is added into sludge, so that the water content of the sludge can be reduced, and the problem of weak acidity of the sludge is solved.

Description

Technical field [0001] The invention involves a sludge curing agent and the sludge curing solidification method using the sludge curing agent. Background technique [0002] A large amount of silt produced in the process of dredging river channels and lakes. In order to deal with these silt, there are often a lot of manpower and resources. In existing technologies, there are two main methods for dealing with these sludge: one is to find a dedicated landfill venue.The sludge is stacked and then the sand is charged. However, the disadvantage of this method is: a large number of specially landfill venues are required, and the cost of transportation is consumed at the same time.CN98113594.3 Disposal a soil curing agent, which uses 78-85%slag or slag composition, 10-25%alkaline excitation agent, 0.01-0.15%of surfactants for soil treatment. However, due to this, due to thisIn the formula component, the lack of curing agents such as cement, and its curing effect is greatly discounted for...

AI Technical Summary

Problems solved by technology

[0002] A large amount of silt is produced during river dredging and lake dredging. To deal with these silts, a lot of manpower and resources are often needed. In the prior art, there are two main methods for dealing with these silts: one is to find a special landfill site, Stack the silt and then fill it with sand blowing. However, the disadvantages of this method are: it requires a large amount of special landfill sites, and at the same time consumes manpower and high transportation costs; another treatment method is to add a curing agent to the silt for curing. CN98113594.3 discloses a kind of soil solidifying agent, and it uses 78-85% slag or slag composition, 10-25% alkaline activator, 0.01-0.15% surfactant to carry out soil treatment, yet, because of this There is a lack of curing agents such as cement in the formula components, and its curing effect will be greatly reduced for soils with high moisture content

In addition, the prior art emphasizes that the addition of curing agents can improve the mechanical strength of silt or soil, such as the unconfined compressive strength. However, the weak acidity of silt will cause certain harm to the environment, which has not attracted enough attention