Sewage treatment system

Abstract

The invention relates to a treatment system used for printing and dyeing sewage physic-chemical treatment. The sewage treatment system comprises technological process equipment, a sampling detection device and a control cabinet, a water inlet segment is connected with a water outlet pipeline through a waste water pump, and the sampling detection device is connected with printing and dyeing sewage in the water outlet pipeline through a sampling tap; the outlet end of a sampling water inlet pipe is connected with a detection box which comprises a box body, a sludge-water separator and a transmittance detector used for detecting the transmittance of the printing and dyeing sewage, and both the mud-water separator and the transmittance detector are arranged in the box body. By the aid of high-pressure gasification sewage mixture, flocculent precipitate and air flotation froth are respectively separated through the sludge-water separator to obtain detection water, the detection water is then detected through transmittance, transmittance detection is quite stable and accurate, scale and dirty formation is avoided, stability and accuracy in control of the sewage are improved, and good control effect is achieved.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a treatment system 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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