Coal-electricity integrated wastewater pretreatment device and method

Abstract

The invention provides a coal-electricity integrated wastewater pretreatment device and method. The coal-electricity integrated wastewater pretreatment device comprises a coal mine wastewater pretreatment unit, a coal mine wastewater buffer pool, a reaction pool, a concentration system and a power plant wastewater buffer pool which are connected in sequence, and the power plant wastewater buffer pool is connected with the reaction pool; the coal mine wastewater pretreatment unit is used for filtering and concentrating suspended matter in coal mine wastewater; the reaction tank is used for mixing the pretreated coal mine wastewater and power plant wastewater into coal-electricity water, removing suspended solids and colloids in the coal-electricity water and adjusting the hardness of the coal-electricity water; and the concentration system is used for concentrating and reducing the coal-electricity water. In order to solve the problem of coal-electricity integrated wastewater treatment, coal mine wastewater and power plant wastewater are combined into a whole, the pretreatment device integrating dosing, precipitation and filtration replaces a traditional wet-process dosing, coagulation, clarification, sand filtration and ultrafiltration five-section treatment process, the stability and reliability of wastewater pretreatment operation are improved, the investment is low, and the coal-electricity integrated wastewater pretreatment device is small in occupied area, low in operation cost, convenient to install, high in self-control degree and flexible and reliable to operate.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a coal-electricity integrated wastewater pretreatment device and method. Background technique [0002] At present, in the field of coal-electricity integrated wastewater treatment technology, coal wastewater and power wastewater are treated separately. Coal wastewater treatment generally adopts on-site treatment methods, such as dosing, coagulation to remove suspended solids, dosing, precipitation to remove hardness, etc. Pretreatment; when electric power wastewater is treated, traditional wet dosing, coagulation, clarification, sand filtration, ultrafiltration and other processes are generally used for pretreatment. The components of coal wastewater and power wastewater are similar, both of which are high-salt wastewater, and the treatment in different places and time not only wastes a lot of manpower and material resources, but also increases operating costs; at the sam...

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Problems solved by technology

The components of coal wastewater and power wastewater are similar, both of which are high-salt wastewater, and the treatment in different places and time not only wastes a lot of manpower and material resources, but also increases operating costs; at the same time, it occupies a large area, which is very important for production. It is tantamount to increasing the risk of safe production

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