System and method for purifying calcium-containing sludge by recycling water quality of power plant

Abstract

The invention provides a system and a method for purifying calcium-containing sludge by recycling water quality of a power plant. The system for purifying the calcium-containing sludge by recycling the water quality of the power plant comprises a sludge concentration tank, a desulfurizing agent grinding unit and a desulfurizing agent slurry supply unit, the sludge concentration tank is used for storing calcium-containing sludge from a power plant clarification tank, and the calcium-containing sludge is sent to the desulfurizing agent grinding unit or the desulfurizing agent slurry supply unit; the desulfurizing agent grinding unit is used for circularly grinding a mixed material of limestone and calcium-containing sludge; the desulfurizing agent slurry supply unit is used for storing the calcium-containing sludge or mixed slurry from the sludge concentration tank and the desulfurizing agent grinding unit and sending the calcium-containing sludge or mixed slurry to the desulfurization system to be used as a desulfurizing agent. Compared with the prior art, the calcium-containing sludge is conveyed into the desulfurization system to be used as the desulfurizing agent, so that the calcium-containing sludge is treated and recycled, the transportation and treatment expenses of polyacrylamide chemicals and sludge during dehydration of the calcium-containing sludge are reduced, and the consumption cost of alkaline limestone serving as the desulfurizing agent in the desulfurization system is reduced.

Description

technical field [0001] The invention relates to the technical field of solid waste recycling, in particular to a system and method for recycling and purifying calcium-containing sludge in power plants. Background technique [0002] With the development of the national economy, energy conservation and environmental protection have increasingly become important factors affecting the survival and development of enterprises. The sludge from the water purification system of coal-fired power plants is an important solid waste. At present, the sludge is dehydrated and dried to form a dry mud cake and then transported to the outside of the plant. However, the sludge treatment system that exists in this way Problems such as poor operating environment, difficult operation and maintenance of sludge dewatering machines, high chemical consumption, limited sludge transportation, and high disposal costs have become increasingly prominent. How to rationally utilize the sludge in the water ...

AI Technical Summary

Problems solved by technology

The sludge from the water purification system of coal-fired power plants is an important solid waste. At present, the sludge is dehydrated and dried to form a dry mud cake and then transported to the outside of the plant. However, the sludge treatment system that exists in this way Problems such as poor operating environment, difficult operation and maintenance of sludge dewatering machines, high chemical consumption, limited sludge transportation, and high disposal costs have become increasingly prominent. How to rationally utilize the sludge in the water purification system has become a top priority

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