Printing ink wastewater treatment and purification device

Abstract

The invention belongs to the technical field of wastewater purification, and particularly relates to a printing ink wastewater treatment and purification device which comprises a purification tank anda settling tank; the purifying box is fixedly connected to the upper surface of the settling box; a water inlet is formed in the upper surface of the purification box, and a water outlet is formed inthe side wall of the purification box; activated sludge is filled in the purification box; the water outlet is positioned above the activated sludge; the outer surface of the purification box is fixedly wrapped with a threaded pipe; one end of the threaded pipe is communicated with the water outlet, and the other end is communicated into the settling tank on the upper surface of the settling tank; a collecting tank is formed in the inner wall of the bottom of the settling tank; the collecting tank is communicated with the interior of the settling tank through collecting holes which are uniformly distributed; the bottom of the settling tank is fixedly connected with a backflow tank. According to the invention, cyclic utilization of activated sludge can be realized, the utilization efficiency is effectively improved, resource consumption is saved, and the purification efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of wastewater purification, in particular to a printing ink wastewater treatment and purification device. Background technique [0002] During the printing process, due to the cleaning of the equipment, a certain amount of ink waste water will be generated. The ever-changing color of water-based ink causes the chemical composition of its wastewater to be quite complex, with the characteristics of high COD, high chroma, and refractory biodegradation. Once it enters the water body, it will cause serious pollution to the water environment. The main pollution components in ink wastewater are cyclic organic matter (colorant) containing colored groups, water-soluble resin (vehicle) of acrylic acid series, large molecular weight alcohol group or phenyl dispersant, in these types of pollution The water-soluble resin in the waste water is the main component of the wastewater CODcr, accounting for more than four-fift...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies of the existing technology and solve the problem of large manpower and material resources invested in the purification of ink wastewater by activated sludge, the inability to realize the recycling of activated sludge and the mixing of activated sludge in ink wastewater, which affects the post-treatment of ink wastewater in the later stage, A printing ink wastewater treatment and purification device proposed by the present invention

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