Closed waste water treatment method for ecological system

Abstract

The invention discloses a closed waste water treatment method for an ecological system. A closed waste water treatment device for the ecological system includes a primary filter, a regulation water tank, an anaerobic membrane bioreactor connected to the regulation water tank through pipelines, a tubular type membrane module connected to the anaerobic membrane bioreactor through the pipelines, an aerobic membrane bioreactor connected to the tubular type membrane module through the pipelines, and a water outlet water tank connected to the aerobic membrane bioreactor through the pipelines. The waste water treatment method for the closed ecological system includes the following steps of: performing primary filtering; culturing anaerobia in the anaerobic membrane bioreactor and making the anaerobia purify sewage; culturing aerobia in the aerobic membrane bioreactor and making the aerobia purify the sewage; and disinfecting purified water after the sewage is purified by utilizing the aerobia. The technical scheme of the waste water treatment method enables biology technology and membrane separation technology to be coupled, space occupied by a system is greatly reduced, independent survival inhabit space is provided for the anaerobia and the aerobia, the function microorganism activity and pollutant degradation effect are effectively improved, and simultaneously, a whole process maintains closed, so that a gas released during a biological treatment process can be collected and purified, and secondary pollution can be eliminated.

Description

technical field [0001] The invention relates to waste water treatment and reuse, in particular to a closed ecological system waste water treatment method. Background technique [0002] The regeneration and recycling of water is an inevitable requirement for medium and long-term manned flight missions, and it is also a key component of the regenerative environmental control and life protection system for manned spaceflight. Sewage in closed ecosystems such as manned space vehicles, low-Earth orbit space stations, and extraterrestrial planetary survival bases is mainly composed of urine, sanitary wastewater, condensed water, and phase-change water (produced by dry waste), among which the pollutants are mainly Included are organic matter, nitrogen, phosphorus and other minerals. [0003] At present, medium and long-term manned spaceflight activities use physical and chemical technology to regenerate water and reuse it for drinking water and sanitary water for passengers, such ...

AI Technical Summary

Problems solved by technology

In the controlled ecological life support system of the planetary base in the future, a large number of plants will be introduced and the plants will be used as the material circulation center to establish an advanced regenerative life support and material circulation system. Wastewater combining biological and physical and chemical technologies will be used in the controlled ecological life support system. The treatment process can not only improve the water recovery rate and reduce the material loss in the water treatment process, but also can effectively recover mineral elements such as nitrogen and phosphorus in the wastewater, and the produced water can be used as a high-quality plant nutrient solution, further improving the comprehensive recycling rate of sewage , but there is no device and method that can realize the above wastewater treatment process in the prior art

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