Treatment device for treating printing and dyeing wastewater

Abstract

The invention relates to a treatment device for the physical and chemical treatment of printing and dyeing wastewater. The treatment device for treating the printing and dyeing wastewater comprises a water feeding pipe segment, a decolorizer adding device, a coagulant aid adding agent, a sewage pump, a water conveying pipeline, a sampling detection device for detecting a wastewater treatment index, control boxes and a sedimentation basin, wherein the water feeding pipe segment is connected with the water conveying pipeline through the sewage pump; the tail end of the water conveying pipeline is connected with the sedimentation basin; the front part of the water conveying pipeline is connected with a reaction pipe; the water conveying pipeline at the rear side of the reaction pipe is provided with a sampling opening; the sampling detection device is connected with the printing and dyeing wastewater in the water conveying pipeline through the sampling opening; the sampling detection device is used for acquiring signals through an optical sensing element and inputting the signals into the control boxes; the control boxes are in signal connection and are used for controlling the adding amount of a decolorizer in the decolorizer adding device. According to the treatment device, the sampling detection is adopted and amplified to the whole system, so that the control system is controlled well; the whole process ensures that the printing and dyeing wastewater is stably and fully flocculated.

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 wastewater. 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 wastewater discharge of the printing and dyeing industry is one of the key industries that cause water pollution in my country. Compared with other industries, printing and dyeing wastewater 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 wastewater, the existing treatment technologies mainly treat printing and dyeing wastewater through physical and chemical treatment and biochemical treatment in order, so as to degrade harmful substances and meet the discharge standards. For the curre...

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the Chinese patent with the notification number CN203238083U discloses a printing and dyeing wastewater treatment equipment that automatically adjusts the amount of treatment chemicals. Excessive deviation between the measured value of the pH meter and the actual value causes the control system to be unstable

Imported pH can only be accurately controlled temporarily, and the pH control is nonlinear, making it difficult to maintain stability

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