System for treating fluoride-containing wastewater

Abstract

The invention discloses a system for treating fluoride-containing wastewater. The system comprises a regulation and emergency pool. A water outlet of the regulation and emergency pool is communicated with a water inlet of a primary reaction tank, the water outlet end of the primary reaction tank is communicated with the water inlet end of a primary sedimentation tank, the primary reaction tank is provided with a primary stirring mechanism, a fluoride-removing agent is placed in the primary reaction tank, and the bottom of the primary sedimentation tank is provided with a primary sludge outlet. The water outlet end of the upper portion of the primary sedimentation tank is communicated with a water inlet of a secondary reaction tank, and the water outlet end of the upper portion of a secondary sedimentation tank is communicated with an intermediate water tank. The primary sludge outlet and a secondary sludge outlet are communicated with a sludge tank, and the sludge tank is communicated with a sludge dehydrator. By placing the fluoride-removing agent into the primary reaction tank, fluorine ions in the wastewater can react and precipitate well and are removed in the primary sedimentation tank, floculation adsorption sedimentation is performed in the secondary reaction tank and the secondary sedimentation tank, other pollutants are removed, and a good purification function is achieved.

Description

technical field [0001] The invention relates to a fluorine-containing wastewater treatment system. Background technique [0002] As we all know, the existing wastewater treatment method is generally a process of adding flocculants to the sewage to mix with the sewage, and the flocs after the flocculation are precipitated and then discharged. Such a treatment system can treat general sewage, which is different from Suspended particles dispersed in the sewage are bridging and adsorbed, which has a strong flocculation effect, but it does not have a good purification effect on the sewage containing fluoride ions in the sewage. In the prior art, there is an urgent need for a fluorine-containing wastewater treatment system capable of purifying fluoride ions in sewage and operating efficiently. Contents of the invention [0003] The object of the present invention is to overcome the defects existing in the prior art, and provide a fluorine-containing wastewater treatment system ...

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Problems solved by technology

[0002] As we all know, the existing wastewater treatment method is generally a process of adding flocculants to the sewage to mix with the sewage, and the flocs after the flocculation are precipitated and then discharged. Such a treatment system can treat general sewage, which is different from Suspended particles dispersed in the sewage are bridging and adsorbed, which has a strong flocculation effect, but it does not have a good purification effect on the sewage containing fluoride ions in the sewage

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