Ultrafiltration membrane separation device

Abstract

The invention discloses an ultrafiltration membrane separation device. The invention relates to the field of sewage treatment. The ultrafiltration membrane separation device comprises a pipeline system; a water inlet assembly, a pre-filtering treatment assembly, a cleaning water inlet assembly, a first water production assembly, a backwashing assembly and a second water production assembly are sequentially arranged on the pipeline system; a cleaning liquid inlet assembly is arranged between the pre-filtering treatment assembly and the cleaning assembly on the pipeline system; a cleaning drainage assembly used for draining water after cleaning is arranged on the pipeline system and located on one side of the cleaning assembly. A backwashing drainage assembly for draining water after backwashing is arranged on one side of the backwashing assembly and located on the pipeline system. The ultrafiltration membrane separation device comprises a control assembly for controlling the ultrafiltration membrane separation unit. The ultrafiltration membrane separation device is small in screening aperture, capable of intercepting almost all bacteria, heat sources, viruses, colloidal particles, proteins and macromolecular organic matters in a solution, simple in equipment and technological process and easy to operate, manage and maintain, and the cleaning assembly is used for cleaning and removing the bacteria, the viruses and the colloidal particles in water.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an ultrafiltration membrane separation device. Background technique [0002] Currently commonly used membrane treatment technologies include microfiltration, ultrafiltration, reverse osmosis, nanofiltration, and electrodialysis. The principle is to use natural or synthetic membranes with selective permeability to separate, fractionate, purify or enrich two-component or multi-component systems with external energy or chemical potential difference as the driving force. [0003] Microfiltration membrane: It can intercept particles between 0.1-1 micron. The microfiltration membrane allows macromolecules and dissolved solids (inorganic salts) to pass through, but it will retain suspended solids, bacteria, and large molecular weight colloids; [0004] Ultrafiltration membrane: It can intercept macromolecular substances and proteins between 0.002-0.1 microns. The ultrafiltration membran...

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Problems solved by technology

[0008] Compared with ultrafiltration membranes, microfiltration membranes have a smaller particle capacity and are easy to be blocked. When used, a pretreatment system must be installed, otherwise they cannot work normally; nanofiltration membranes and reverse osmosis membranes have stricter water requirements and higher equipment costs. High; while electrodialysis is composed of thinner separators and membranes, with many parts and higher assembly requirements. If the assembly is not good, it will affect the uniformity of water distribution.

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