Quartz sand type dense medium efficient coagulation and clarification system and method

Abstract

The invention discloses a quartz sand type dense medium efficient coagulation and clarification system and method. The system comprises an efficient coagulation and clarification unit and an automatic quartz sand adding unit, wherein the efficient coagulation and clarification unit comprises a coagulation tank, a flocculation tank and a clarification tank; a quartz sand rotational-flow recovery unit comprises a quartz sand rotational-flow recoverer, a quartz sand return pipe and a residual sludge discharge pipe; the coagulating tank is connected with the clarification tank through the flocculation tank; a top outlet of the clarification tank is provided with a water outlet pipe; a clarification tank sludge discharge pipe is arranged at the bottom of the clarification tank; the clarification tank sludge discharge pipe is connected with an inlet of the quartz sand rotational-flow recoverer through a sludge reflux pump; a top outlet of the quartz sand rotational-flow recoverer is connected with a residual sludge discharge pipe; a bottom outlet of the quartz sand rotational-flow recoverer is connected with the quartz sand return pipe; the quartz sand return pipe is connected with the flocculation tank; and the automatic quartz sand adding unit is connected with the flocculation tank. According to the invention, sludge in the clarification tank can be discharged in time, effluent quality is ensured, proper backflow quartz sand concentration can be controlled, and coagulation and clarification effect is enhanced.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a high-efficiency coagulation and clarification system and method of quartz sand type dense medium. Background technique [0002] The traditional coagulation process has problems such as slow solid-liquid separation rate, large land occupation, large sludge volume and high water content, and the treatment efficiency needs to be improved urgently. Therefore, multi-media loading based on the traditional coagulation and clarification process can effectively improve the floc settlement. Speed, reduce equipment footprint, improve coagulation and clarification effect. [0003] Due to the advantages of high density, cheap and easy to obtain, and no secondary pollution, quartz sand has attracted widespread attention, and can be used as a loading medium for coagulation and clarification processes. Quartz sand has a large specific gravity, which is more than twice that of water....

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a high-efficiency coagulation and clarification system and method of quartz sand type heavy medium, the coagulation tank and the flocculation tank of the high-efficiency coagulation and clarification unit are connected with the clarification tank, and the clarification tank mud discharge pipe is arranged at the bottom of the flocculation tank, and the sludge discharge pipe of the clarification tank is regularly drained The quartz sand deposited in the tank is transported to the clarification tank, which solves the blockage problem of the quartz sand in the flocculation tank; at the same time, the quartz sand is separated from the sludge and then fed into the high-efficiency coagulation and clarification system. The adding unit can realize the automatic control of the dosing and replenishment of quartz sand in the high-efficiency coagulation and clarification device, and has the characteristics of good treatment effect, low operating cost, and simple operation and maintenance.

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