Urban wastewater treatment device based on membrane separation technology

Abstract

The invention discloses an urban wastewater treatment device based on a membrane separation technology, and belongs to the technical field of wastewater treatment. A deformation filter screen and a slow release box are impacted by water to make a carbon dioxide aqueous solution in the slow release box decomposed to generate carbon dioxide, a contact top block extrudes the deformation filter screento enlarge the mesh aperture of the deformed filter screen, part of particles enter the lower side of the deformation filter screen through meshes of the deformation filter screen, powder particles are formed between an annular membrane and the deformation filter screen, and when an annular expansion bag is supported, the powder particles are extruded, so gaps among the powder particles are reduced, and the filtering effect of powder particles is improved; by arranging crushing thorns, when the annular expansion bag is supported, the crushing thorns can fully crush powder particles, so that gaps among the powder particles can be reduced, and the filtering effect of the powder particles can be improved; and large water flow can be buffered through continuous decomposition and synthesis ofcarbonic acid, so a semi-permeable membrane is not prone to damage.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, and more specifically, relates to an urban wastewater treatment device based on membrane separation technology. Background technique [0002] Membrane separation technology is an emerging technology that uses a separation membrane as the core to separate, concentrate and purify substances. This technology is a separation method that uses a semi-permeable membrane. Since the membrane separation operation is generally carried out at room The substance can maintain the original properties, can maintain the original color, aroma, taste, nutrition and taste of the food, and can maintain the activity of functional ingredients. It has strong selectivity, simple operation process, wide application range and low energy consumption, so it can be widely used Applied in the production of food, membrane separation appeared in the early 20th century, and a new technology of separation emerged rapi...

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Problems solved by technology

[0004] At present, membrane separation technology has been applied to the treatment of urban wastewater, but in actual use, the semi-permeable membrane may be impacted to damage due to the excessive water flow during drainage, which greatly reduces the filtering effect of the semi-permeable membrane, and the semi-permeable The price of the membrane is more expensive than the traditional filter, which increases the cost of wastewater treatment

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