Coagulation and clarification integrated system and method suitable for heavy medium flocculation

Abstract

The coagulation and clarification integrated system comprises a coagulation tank and a flocculation tank, a water distribution area is connected with the coagulation tank, and the bottom of the coagulation tank is connected with the flocculation tank; the flocculation basin is connected with the inclined plate sedimentation basin; a lateral flow inclined plate is arranged in the inclined plate sedimentation tank, a retention wall is arranged above the lateral flow inclined plate, and an upward flow inclined plate is arranged on one side of the retention wall; and the compressed air system is connected with the coagulation tank and the flocculation tank. The device is suitable for high-hardness circulating water drainage water or mine drainage water, can effectively reduce pollution and blockage of dense medium particles to the clarification tank, greatly improves the utilization efficiency of the dense medium particles, maintains the suspension concentration of the dense medium particles in the reactor, further can ensure the effluent quality, improves the maximum treatment capacity of equipment, and reduces the production cost. And the anti-fluctuation capability of the system under the working conditions of incoming water quantity fluctuation and frequent starting and stopping is enhanced, and good economic benefits are achieved.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to an integrated coagulation and clarification system and method suitable for dense medium flocculation. Background technique [0002] Mine drainage water and circulating water drainage are typical high-hardness wastewater, which have great reuse value after treatment. Usually, the softening-coagulation clarification process is used to remove the hardness and most of the suspended solids in the raw water, and then enter the membrane treatment process for advanced treatment. Generally, the total hardness of mine drainage water and circulating water drainage water is relatively high, and the magnesium hardness accounts for a high proportion of the total hardness. The magnesium hydroxide formed after the softening agent is in the form of flocs or flakes is large in size and light in specific gravity, making it difficult to settle . It is difficult to ensure that the effluen...

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Problems solved by technology

[0005] Aiming at the high-hardness wastewater treatment process using the softening-dense medium flocculation-clarification process, in order to alleviate the problems of low density of effective suspended heavy medium particles, equipment fouling, and difficulty in adapting to water volume fluctuations, the purpose of the present invention is to provide a method suitable for heavy The coagulation and clarification integrated system and method of medium flocculation, which can effectively stabilize the water quality of the effluent, increase the designed processing capacity of the equipment, strengthen the anti-fluctuation ability of the system under the conditions of fluctuating incoming water volume and frequent start and stop, and prevent heavy medium Particle fouling

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