Multi-stage sedimentation tank for wastewater of dust removal and desulfurization equipment

Abstract

The invention provides a multi-stage sedimentation tank for wastewater of dust removal and desulfurization equipment, and relates to the field of sedimentation tanks, wherein the multistage sedimentation tank comprises a sedimentation tank body; a plurality of small tanks are arranged in the sedimentation tank body; the multistage sedimentation tank comprises a pH neutralization tank, a desulfurization circulation tank, a reaction tank and an oxidation tank; a first-stage sedimentation tank, a second-stage sedimentation tank and a third-stage sedimentation tank are arranged in front of the oxidation tank and the reaction tank; and the left side of the third-stage sedimentation tank is provided with a fourth-stage sedimentation tank, the lower part of the fourth-stage sedimentation tank is provided with a fifth-stage sedimentation tank, the rear part of the fifth-stage sedimentation tank is provided with an isolation tank, and the left side of the isolation tank is provided with a clear liquid tank.For ensuring the stable operation of the system for a long time, all partition automatic systems, pH value control quantity, oxidation aeration time, stirrers and the like are controlled by one PLC program control instrument, the sedimentation effect is optimal through the arrangement of multiple stages of sedimentation tanks, the whole device is convenient to construct and install, the sedimentation efficiency of wastewater can be improved, wastewater pollution is reduced, wastewater recycling is achieved, the environment is protected, and the practicability is high.

Description

technical field [0001] The invention relates to the field of sedimentation tanks, in particular to a multi-stage sedimentation tank for waste water from dust removal and desulfurization equipment. Background technique [0002] Desulfurization and dust removal equipment is used to desulfurize the flue gas generated in the industrial production process. It generally includes a desulfurization tower and desulfurization and dust removal equipment. The flue gas forms calcium sulfate in the desulfurization tower, and then the calcium sulfate is collected and recycled by the desulfurization and dust removal equipment. . [0003] A sedimentation tank is a structure that uses sedimentation to remove suspended solids in water. Sedimentation tanks are widely used in wastewater treatment. There are many types of sedimentation tanks. According to the direction of water flow in the tank, they can be divided into three types: advection type, vertical flow type and radial flow type. [00...

AI Technical Summary

Problems solved by technology

[0004] In industrial production, through the cooperation of desulfurization and dust removal equipment and sedimentation tanks, SO3 and dust atomized into fine water droplets are separated to the tower wall forming a water film, and then washed out of the tower body and flowed into the sedimentation tank for circular precipitation. The existing sedimentation tanks are often It covers a large area, but the sedimentation effect is not good. Some have many faults, inconvenient maintenance, and the possibility of causing production environment problems such as border pollution.

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