Sewage treating device

Abstract

The invention relates to a treating device for dyeing sewage physicochemical treatment. The sewage treating device comprises a technology process device, a sampling detecting device and a control box. A water inlet pipe section is connected with a water feeding pipe through a sewage pump; the sampling detecting device is connected with dyeing sewage in the water feeding pipe through a sampling opening, and comprises a sampling water inlet pipe, a high-pressure gas inlet pipe and a detecting box for detecting the transparency of dyeing sewage; the outlet end of the sampling water inlet pipe is connected with the detecting box, the detecting box comprises a box body, a muddy water separator and a transparency detector for detecting the transparency of the dyeing sewage, and the muddy water separator and the transparency detector are both arranged in the box body. According to the system, high-pressure gas and sewage are mixed, flocculent precipitation and gas flotation foam are separated through the muddy water separator respectively to obtain detection water, the detection water is detected through the transparency, transparency detecting is quite stable and accurate, scaling cannot be generated, and fouling can also not be generated, the control stability and the accuracy of sewage are improved, and the control effect is good.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a treatment device for physical and chemical treatment of printing and dyeing sewage. Background technique [0002] China is the world's largest producer and exporter of textiles and clothing, so the printing and dyeing industry is closely related to it, and the sewage discharge of the printing and dyeing industry is one of the key industries that cause water pollution in my country. Compared with other industries, the printing and dyeing sewage has a large amount of wastewater discharge , deep color, high content of refractory organic matter, unstable water quality and so on. [0003] For the treatment of printing and dyeing sewage, the existing treatment technologies mainly treat printing and dyeing sewage through physical and chemical treatment and biochemical treatment in order, so as to degrade harmful substances and meet the discharge standards. For the current physical and ...

AI Technical Summary

Problems solved by technology

However, considering that when the detection box disclosed in CN104034702A is detected, printing and dyeing sewage is easy to contaminate the surface of the light source and the light sensing element, resulting in a double decline in light transmittance and light sensitivity. The performance is not very good, and there are many problems such as durability. It is troublesome to disassemble and repair, which eventually leads to the instability of the control system.

[0006] In addition to the detection box for light transmission ability detection, it has been difficult to control the system for the detection object of light transmission detection, because the water quality of the detection object has not been separated, and often contains sediment, impurities, flocs, etc., which not only makes it easy to The fouling of the photometric detection box affects the detection, and the precipitation, impurities and flocs will also interfere with the detection and affect the data of the light transmittance, thus affecting the accuracy of the control system, prone to unstable control and poor control effect

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