Multi-stage treatment device for alkali-decrement microfiber production wastewater

Abstract

The invention discloses a multistage treatment device for alkali-decrement microfiber production wastewater, and belongs to the technical field of wastewater treatment.The multistage treatment device comprises a treatment box, an opening is formed in the top of the treatment box, a floating type filtering mechanism is fixedly arranged on the inner side of the opening, a hopper is further installed on the top of the treatment box, and a discharging pipe is connected to the bottom of the hopper and extends to the inner side of the treatment box; a quantitative feeding mechanism is fixedly arranged at the bottom of the discharging pipe; according to the sewage treatment device, sewage filtration is realized, impurities on the filter screen can be removed without power, the workload is reduced, the cleaning frequency of the movable filter screen is reduced, an equal amount of medicament can be automatically added according to a constant sewage amount, the sewage is in a static state in the treatment box, the flocculation effect of the medicament can be maximized, and the flocculation effect is good; the sewage treatment device is simple in structure, convenient to carry out continuous sewage treatment operation, capable of achieving full-automatic operation of sewage, high in sewage treatment efficiency, high in economic benefit, integrated, small in occupied area and convenient to manufacture and transport.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a multi-stage treatment device for alkali-reduced microfiber production waste water. Background technique [0002] In the production of synthetic leather, the alkali weight reduction technology is a unique process in the production of superfiber leather. The two-component sea-island fiber formed in the spinning process can remove the continuous phase of the sea-island fiber through the alkali weight reduction technology, and the ultra-fine fiber composed of the dispersed phase can be obtained. Fiber, fiber ultra-fineness and release are the key to synthetic leather simulation and softening. Alkali weight reduction method is a common sea-island structure chemical stripping method for island composite ultra-fine fibers. When using alkali weight reduction method to produce ultra-fiber A large amount of wastewater will be generated. At present, there have be...

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Problems solved by technology

[0003] At present, a large amount of sewage will be generated in the process of microfiber production. In order to ensure that the sewage can meet the requirements of environmental protection discharge, it is necessary to carry out multi-stage treatment of sewage. The existing patent No. CN113426365B discloses a rubber regeneration wastewater treatment device, the advantage of this patent is that when the rubber regeneration wastewater treatment device is used, the quantitative feeding device can put different amounts of reactants into the mixing tank according to the flow rate of the wastewater in the sewage, so as to ensure that the amount of added reactants can be Adapt to the amount of waste water, no need to manually measure every time, easy to use, and then start the mixing device to mix the waste water and reactants, after the mixing is completed, start the filter device to filter and discharge the mixed waste water However, when the sewage in this patent is filtered, the filter screen needs to be cleaned frequently, the workload is heavy, and the number of cleanings is frequent, and when the sewage is added to the sewage flocculation sedimentation operation, the sewage is dynamically flowing, which makes it difficult to produce flocculants Flocculation, the flocculation effect is poor, and the dose of medicine is proportional to the amount of sewage, it is difficult to automatically add the same amount of medicine according to the constant sewage volume, it is easy to add more or less medicine, and the fully automatic operation of sewage cannot be realized , the efficiency of sewage treatment is low, and the economic benefit is not high

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