Integrated high-density coal water treatment clarifier

Abstract

An integrated high-density coal water treatment clarifier comprises an agglomerating zone, a flocculating zone, a water distributing zone, a settling zone, an inclined plate, a clear water zone and agravity filtration zone, wherein the flocculating zone is formed in one side of the agglomerating zone, and is communicated with the bottom of the agglomerating zone; the water distributing zone is arranged on one side of the flocculating zone; the water distributing zone is communicated with the settling zone; the clear water zone is arranged on one side of the settling zone; the settling zone iscommunicated with the clear water zone; a filtering zone is arranged on one side of the clear water zone, and clear water in the clear water zone can flow into the filtering zone. Through the integrated high-density coal water treatment clarifier, coagulation is divided into an agglomerating process and a flocculating process; in the agglomerating zone and the flocculating zone, an appropriate speed gradient G value and an appropriate dwell time T value for the agglomerating process and the flocculating process are controlled in a mechanical stirring form respectively; meanwhile, through internal circulation of sludge in a flocculating tank, the flocculating effect of coal-containing wastewater is strengthened, the floc density is increased, mud-water separating and settling performance are enhanced, the coal-containing wastewater is rapidly, efficiently and stably treated effectively, and a recycling standard thereof is met; therefore, the integrated high-density coal water treatmentclarifier has good economic and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to an integrated coal-containing wastewater treatment device, in particular to an integrated high-density clarifier for coal-water treatment. Background technique [0002] During the normal production and operation of the power plant, in order to prevent dust from the coal transportation system and maintain a good working environment, it is necessary to regularly flush the coal transportation trestle, transfer station, coal bunker, etc., and the drainage after flushing will form coal-containing wastewater. Coal-containing wastewater contains a large amount of coal powder particles, high suspended solids and chroma, and cannot be discharged directly. Coal-containing wastewater needs to be treated and recycled. Coal-containing wastewater from thermal power plants generally undergoes secondary precipitation to remove large particles of coal slime, and the supernatant is often tre...

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Problems solved by technology

Coal-containing wastewater from thermal power plants generally undergoes secondary precipitation to remove large particles of coal slime, and the supernatant is often treated with a water purifier or an electroflocculation device. , dynamic filtration and sludge thickening process are integrated, the tank body of the device is generally very high, it is difficult to monitor its operation status, maintenance and overhaul are difficult, floating light filter material is easy to be polluted and blocked, and the quality of effluent water is difficult to guarantee; the electrocoagulation system consumes electricity Many, split layout, occupying a large area, especially not suitable for the transformation project of the coal-containing wastewater system of the power plant; due to the uneven distribution of coal powder particles in the coal-containing wastewater, there are a large number of particles with small particle size and low density, and electrocoagulation Or the flocs formed by ordinary coagulation treatment are light and difficult to settle, and all adopt the gravity sludge discharge method, which has the risk of sludge clogging equipment and pipelines

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