Apparatus for filtering printing and dyeing wastewater

Abstract

The invention discloses an apparatus for filtering printing and dyeing wastewater. The apparatus comprises a wastewater recovery pond, an inlet of the wastewater recovery pond is connected to a wastewater drainpipe, a filter screen is arranged in the wastewater pond, the filter screen is used for separating the internal part of the recovery pond into a standing zone, a water outlet of the wastewater recovery pond is connected to a wastewater filter tank through a connecting pipe, and the connecting pipe is provided with a first valve; the top of the wastewater filter tank is provided with an upper cover, a water proof layer is laid on the surface layer of the top cover, an impervious layer is arranged on an inner wall of the wastewater filter tank, and a working superficial layer is sprayed on the surface of the impervious layer; the wastewater filter tank is separated into four filtering zones by a fixed plate, each filtering zone is provided with an inlet pipe and a water pump, an inner wall of a water purification zone is provided with an ultrafilter membrane, the lower part of the water purification zone is provided with a clean water outlet pipe and a second valve. The apparatus for filtering printing and dyeing wastewater can be used for effectively and conveniently treating printing and dyeing wastewater, improving printing and dyeing wastewater treatment effects, and at the same time reducing cost.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a printing and dyeing sewage filtering device. Background technique [0002] With the development of society, the rapid increase of factories and population has led to a sharp increase in the discharge of domestic sewage and industrial wastewater, causing serious water pollution and seriously affecting people's living environment. Nowadays, the treatment of sewage has become an urgent problem in society. One of the problems is that sewage treatment is very necessary. Among them, the sewage discharged by the printing and dyeing industry has a large amount of harmful substances, and contains a large amount of dyeing auxiliaries and lint, which makes the waste water present high chroma and high turbidity. If it is directly discharged without treatment, it will cause serious environmental pollution. Therefore, with the rapid development of the printing and dyeing industry, p...

AI Technical Summary

Problems solved by technology

At present, most of the methods used in sewage treatment technology are mainly chemical methods. Chemical purification methods are not only costly, but also the reactants produced after purification also contain harmful substances, resulting in incomplete purification of printing and dyeing sewage and cannot be widely used.

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