In-situ stabilized solidification construction process for sludge

Abstract

The invention relates to an in-situ stabilized solidification construction process for sludge. The process comprises the steps: primary-stage preparation of stabilized solidification construction; grid-to-be-treated partition before construction and physicochemical property analysis of sampled sludge; in-situ stabilized sludge solidification construction method determining; in-situ stabilized sludge solidification stirring construction; sludge curing after stabilized solidification; and sludge effect self-check after stabilized solidification and secondary dosed stabilized solidification, thereby completing the construction process. Through the in-situ stabilized solidification construction process for the sludge, in-situ solidification stirring equipment and sludge stabilized solidification agents are used in a matched manner, and thus, the secondary pollution to surrounding environments can be effectively lowered while the harmless treatment of the sludge is achieved; and the processhas many advantages that the disturbance to the sludge is low, the secondary pollution is light, the equipment process is simple and convenient, the site condition requirements are low, the efficiency of construction is high, the coefficient of safety is big, the practicability of engineering is high, and the like, thereby facilitating large-scale popularization and application.

Description

technical field [0001] The invention relates to a method for treating polluted sludge, in particular to a construction process for in-situ stabilization and solidification of sludge. Background technique [0002] With the development of my country's social economy, industry and urbanization, the production and quantity of industrial sewage and urban sewage are constantly increasing. With the development of domestic sewage treatment, the total treatment water volume and treatment degree of sewage treatment plants continue to expand and improve. , The amount of sludge produced will also increase day by day, and a large amount of sludge cannot be treated in a timely and reasonable manner, which will become a heavy burden for sewage treatment plants. [0003] At present, the main method of sludge disposal in China is sanitary landfill disposal of sludge, but most sludge landfills adopt simple landfill methods, without effective anti-seepage, sealing and other waterproof measures,...

AI Technical Summary

Problems solved by technology

[0003] At present, the main method of sludge disposal in China is sanitary landfill disposal of sludge, but most sludge landfills adopt simple landfill methods, without effective anti-seepage, sealing and other waterproof measures, and the sludge itself is not Carry out harmless treatment. The sludge in the landfill disposal site contains various heavy metals, microorganisms, pathogens and other harmful components, which will pollute the surrounding soil and groundwater environment through the corrosion of rainwater and seepage water. In addition, due to the high moisture content of the sludge, the stabilization Poor, it is easy to cause safety risk accidents such as dam collapse after being eroded by rainwater, and the long-term existence of sludge emits stench and also causes great troubles to the surrounding air environment; in addition, the current situation of domestic river pollution and sediment pollution is also relatively serious. In view of the above situation, At present, the temporary storage of landfill sludge and river sediment must be effectively treated with stabilization and solidification measures to reduce its impact on the surrounding ecological environment and safety