Candle type clarification filter and method for treating sewage by using candle type clarification filter

Abstract

The invention discloses a candle type clarification filter. The candle type clarification filter comprises a main filter body, wherein a plurality of filter elements are arranged in the main filter body; a slag discharging valve is arranged at the lower end of the main filter body; a pressure release valve is arranged above the main filter body; a liquid inlet pipe is arranged at the lower part ofthe main filter body; the lower ends of the filter elements are connected with a liquid outlet pipe; a clear liquid valve is arranged on the liquid outlet pipe; and the liquid inlet pipe and the liquid outlet pipe are externally connected with a series of functional valves. When the candle type clarification filter is used for sewage treatment, all the suspended solids in the liquid can be filtered out, and the content of the filtered suspended solids in the liquid is 100 mg/L or below. The whole candle type clarification filter is ingenious in structure, low in use cost, and rapid and convenient in sewage treatment, and can be reused by retreating the filter elements; due to the fact that a filter cake is arranged in the filter, the candle type clarification filter can automatically conduct deslagging and cleaning treatment on the filter cake instead of conducting traditional simple treatment, so the service life of the candle type clarification filter can be prolonged, and the follow-up sewage treatment capacity of the candle type clarification filter cannot be affected.

Description

technical field [0001] The invention belongs to the field of sewage treatment and relates to a filter, in particular to a candle-type clarification filter and a method for treating sewage by using the same. Background technique [0002] In actual production, water is a very common production material. After production, water becomes sewage, which cannot be discharged directly, but requires special treatment. This is a headache for small enterprises. Low cost, poor water purification effect, high input cost, and small business operation disadvantages, more and more filter presses are used in small businesses. Traditional filters pass sewage into the press filter and purify it through the filter element, so that the water is purified, that is, discharged, so that for small and micro enterprises, the cost is controlled. [0003] However, after the equipment has been used for a period of time, the filter cake accumulates, and it is usually handled simply by hand, but the effe...

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Problems solved by technology

[0003] However, after the equipment has been used for a period of time, the filter cake accumulates, and it is usually handled simply by hand, but the effect of treating the filter residue is not good, which will affect the next sewage treatment capacity, so the service life is not long, and the further the treatment effect is The worse it is, the effect of sewage treatment will be affected

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