Efficient chemical fiber textile dyeing wastewater recycling treatment system

Abstract

The invention provides an efficient reuse of chemical fiber textile dyeing wastewater treatment system, which aims to solve the technical problem that the printing and dyeing wastewater after coagulation treatment cannot reach the discharge recovery standard after being settled in a traditional sedimentation tank, including wastewater treatment mechanism and wastewater water supply mechanism And the waste water reuse box, using the principle of inclined plate sedimentation, the floc sludge in the dyeing wastewater is precipitated, and the precipitated floc sludge is immediately discharged from the treatment chamber through the continuously rotating separation roller, so that the small volume sludge It will not be discharged with the wastewater, so that there is no sludge in the wastewater after treatment, and the discharge and recycling standards are met, and then most of the salt, colloid, and organic matter are filtered out through the reverse osmosis membrane, and a certain proportion of fresh water can be directly mixed with it for reuse. technical effect.

Description

technical field [0001] The invention relates to the technical field of textile wastewater treatment, in particular to an efficient recycling chemical fiber textile dyeing wastewater treatment system. Background technique [0002] The textile dyeing and finishing process consumes a lot of water resources and is one of the major water users. On the basis of the existing wastewater treatment capacity of the centralized wastewater treatment plant in the textile dyeing and finishing industrial park or the wastewater treatment station of a large textile dyeing and finishing enterprise, it is necessary to strengthen the advanced treatment of wastewater, increase the reuse rate of reclaimed water, and reduce the discharge volume in order to solve the problem of capacity expansion. question. The advanced treatment and reuse of textile dyeing and finishing wastewater can not only improve the recycling rate of water, reduce the consumption of water resources, relieve the pressure of w...

AI Technical Summary

Problems solved by technology

[0003] At present, the "pretreatment-anaerobic biological treatment-aerobic biological treatment-coagulation method" is generally used in the treatment of textile dyeing and finishing wastewater. This method has low operating costs, but it is difficult to achieve the ideal treatment effect.

In particular, the extensive use of synthetic slurry and new organic additives in the production process has led to problems such as poor biochemical treatment performance, high COD, and deep color in the treated effluent, which cannot meet the requirements for discharge and reuse, and restricts The demand for reused water in the production process

After pretreatment-anaerobic biological treatment-aerobic biological treatment-coagulation method, the tail water has complex components and poor biodegradability, especially in the coagulation treatment process, the traditional coagulation sedimentation tank, the sedimentation speed Slow, and the sludge cannot be exported in time after sedimentation, resulting in a large amount of small-volume sludge in the output wastewater supernatant, so that the output wastewater cannot meet the discharge and reuse standards

[0004] In addition, the patent No. CN205367840U discloses an inclined tube sedimentation device, which includes a flocculation reaction area, an inclined tube area, an inclined tube sedimentation area, and a clear water area. Although this patented technical solution can remove a large amount of sludge in wastewater, regardless Settling through inclined tubes or inclined plates cannot output the settled sludge immediately, so that the output wastewater contains a small volume of sludge and cannot meet the discharge and reuse standards.

Images