Dual-air-floatation water treatment system special for wet-process spunlace

Abstract

The invention relates to a dual-air-floatation water treatment system special for wet-process spunlace. According to the dual-air-floatation water treatment system special for wet-process spunlace, a dual-air-floatation filtered water treatment system is formed by adding flat flow air-floatation filtration after shallow-layer air-floatation filtration, so that a relatively long reaction time is provided for a coagulant and a flocculant, fibers can be relatively thoroughly removed, and the next filtration is relatively effective and clean. The dual-air-floatation water treatment system comprises a shallow-layer air-floatation filtration device and a flat flow air-floatation filtration device which respectively comprise air dissolving systems, wherein the flat flow air-floatation filtration device is located behind the shallow-layer air-floatation filtration device to form the dual-air-floatation filtered water treatment system. The dual-air-floatation water treatment system has the advantages that the flat flow air-floatation filtration device is additionally arranged behind the shallow-layer air-floatation filtration device to form the dual-air-floatation filtered water treatment system, and the two filtration devices comprise the air dissolving systems; and according to the system, a relatively long reaction time is provided for the coagulant and the flocculant, the fibers are relatively thoroughly removed, and the next filtration is relatively effective and clean.

Description

technical field [0001] The invention relates to a kind of advective air flotation filtration after shallow air flotation filtration to form a double air flotation filtration water treatment system, so that the coagulant and flocculant have a longer time to react, the fiber removal is more thorough, and the protection is guaranteed. The more effective, cleaner, and higher-yielding wet spunlace special double air flotation filtration water treatment system for subsequent filtration belongs to the field of wet spunlace water treatment equipment. Background technique [0002] At present, since the fibers used in wet spunlace are ultra-short fibers, the loss rate of fibers after spunlace is 5-8%, and these fibers enter the water treatment circulation system through vacuum suction, so the wet spunlace water The processing load and difficulty are higher than conventional carding spunlace. Enterprises often choose one of shallow air flotation or advection air flotation as the first ...

AI Technical Summary

Problems solved by technology

However, in actual production, due to the need for a certain reaction time after adding coagulants such as PAC, some unreacted coagulants such as PAC are easy to enter the next pipeline and sand filter system with the circulating water, affecting the cleaning and maintenance of the pipeline. The cleaning of the sand filter tank will affect the recoil frequency and filtration efficiency of the sand filter tank, and ultimately affect the water quality, resulting in problems such as easy blockage of the jet plate and excessive microorganisms. In addition, the single air flotation water treatment system also has low water production and cannot meet the requirements Water requirements of high-speed wet spunlace nonwoven production line

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