Fully-automatic oily sewage filtration-type separator and separating system

Abstract

The invention relates to a fully-automatic oily sewage filtration-type separator which comprises a tank body, filter material, a water inlet, a water outlet, a cylinder, a pressure plate, an oil collector, a cylinder fixing cover for fixing the cylinder, and a perforated clapboard; a first chamber is formed between the perforated clapboard and the top wall of an inner cavity of the tank body; thewater inlet and the oil collector are arranged at the upper part of the tank body and both communicated with the first chamber; the perforated clapboard is arranged at the upper part of the inner cavity of the tank body and below the water inlet; the cylinder fixing cover is fixed with the lower end of the tank body, and a piston rod of the cylinder passes through the cylinder fixing cover and then extends into the inner cavity of the tank body; a third chamber is formed between the cylinder fixing cover and the pressure plate; the water outlet is arranged at the lower part of the tank body and communicated with the third chamber; a second chamber is formed between the pressure plate and the perforated clapboard, and a filter core is arranged in the second chamber. The invention also relates to a separating system which adopts the fully-automatic oily sewage filtration-type separator. The invention has small occupying area, is unnecessary to filter oily sewage in advance, can not onlyensure high oil-water separation precision, but also carry out automatic backwash on line.

Description

【Technical field】 [0001] The invention relates to sewage treatment technology, in particular to a device and system for high-precision and fast filtering of oily sewage. 【Background technique】 [0002] The prior art oil-water separator can include four kinds of separation principles: gravity method, adsorption method, membrane separation method and coarse graining method: [0003] The first, the gravity method, is based on the Stock's principle for oil-water separation. That is to use the different specific gravity of oil and water, and use some technical means to make tiny oil stains grow up, float and separate. Commonly used equipment includes: gravity grease trap, inclined plate grease trap, air flotation, etc. This method cannot separate the emulsified oil, the separation effect and efficiency are poor, and the separation accuracy is generally around 30mg / l. However, due to the simplicity of this method, it is currently the main means of oil-water separation and is us...

AI Technical Summary

Problems solved by technology

Although the technology disclosed in the applicant's Chinese invention patent CN 100352533C "on-line self-recoiling high-precision fast filter and filtration system" can be used, its advantage is that special fiber filter material is used as the filter material, and oil stains will not adhere to the filter material. On the one hand, oil stains are easily removed during recoil, and there will be no blockage failure due to oil stain adsorption and saturation, but equipment investment and floor space will greatly increase, which is uneconomical when the amount of water to be treated is small

[0009] At present, there is no one in the market that can not only guarantee the high precision of oil-water separation, the oil content of the effluent water can reach 10mg / L or lower, and the filtration precision of the suspended solids (SS) in the effluent can reach ≤20mg / L; On-line automatic backwash (that is, no need to set up a backwash pool and backwash pump system) filter equipment

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