Special filter thickener of wastewater

Abstract

The invention provides a special filter thickener of wastewater. The special filter thickener comprises a bin, a stirring filtration device, a slag dragging device and supporting legs, wherein the stirring filter device comprises a hollow spindle, filtration impellers, a main drive speed reducer and a coupler; the hollow spindle is fixed inside the bin, the filtration impellers are mounted on thehollow spindle in an arrangement manner, and the hollow spindle is connected with the main drive speed reducer by the coupler and is driven by the main drive speed reducer; the slag dragging device comprises a slag dragging helix, a helix drive speed reducer and a slag outlet; the slag dragging helix is fixedly mounted at the bottom of the bin and is driven by the helix drive speed reducer, the slag outlet is formed in the bottom of one end of the slag dragging helix, and the supporting legs are used for supporting the filter thickener. According to the special filter thickener, the membrane filtration mechanism is adopted, and the two-shaft drive cross filtration impellers are adopted, so that the blocking phenomenon of the filtration impellers is not caused; the inclined helix is utilized for dragging slags, so that solid and liquid can be thoroughly separated from each other, and the slags can be dragged on line at any time. Filtered solution can be reduced, so that the cost of water is lowered.

Description

technical field [0001] The invention relates to a filtering and concentrating device, in particular to a special filtering and concentrating machine for waste water. Background technique [0002] In recent years, the country's environmental protection requirements have become more and more stringent. Many chemical plants have added devices such as tail gas scrubbers, wastewater neutralization tanks, etc., but although harmful substances are removed after treatment, the liquid containing solids cannot be reused. Utilization, let alone meet the discharge requirements, so it is necessary to carry out solid-liquid separation treatment through specific equipment. The neutralization reaction is a chemical reaction, so the solid particle size produced is relatively fine, and the solid content in the liquid is quite low. Currently, there is a lack of filtration equipment for this type of wastewater on the market. Contents of the invention [0003] The purpose of the present inven...

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Problems solved by technology

[0002] In recent years, the country's environmental protection requirements have become more and more stringent. Many chemical plants have added devices such as tail gas scrubbers, wastewater neutralization tanks, etc., but although harmful substances are removed after treatment, the liquid containing solids cannot be reused. Utilization, let alone meet the discharge requirements, so it must be treated with solid-liquid separation through specific equipment

The neutralization reaction is a chemical reaction, so the solid particle size produced is relatively fine, and the solid content in the liquid is quite low. Currently, there is a lack of filtration equipment for this type of wastewater on the market.

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