Three-phase overflow high-efficiency oxygenation wetland system

Abstract

The invention discloses a three-phase overflow high-efficient oxygen-supplementing wetland system, and solves the problems of poor reoxygenation effect, high energy consumption, low removal efficiencyof COD (Chemical Oxygen Demand) and nitrogen and phosphorus, easiness for occurring short flow phenomenon, organic sewage blocking and the like existed in existing wetland. A wetland bed is divided into a central embedding area and a peripheral overflow area, so that the central embedding area can provide a three-phase coexistence environment of solid, liquid and gas for a to-be-treated water body, so that efficient oxygen supply is realized, and gas mass-transfer efficiency is also enhanced. The three-phase overflow high-efficient oxygen-supplementing wetland system is characterized by comprising the wetland bed, wherein a central baffle plate for dividing the wetland bed into the central embedding area and the peripheral overflow area is arranged in the middle of the wetland bed, and the filler height of the central embedding area is higher than that of the peripheral overflow area, so that the central embedding area is in the three-phase coexistence environment of solid, liquid andgas.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a three-phase overflow high-efficiency oxygenation wetland system. Background technique [0002] Although our country has a vast territory, it is a country with severe drought and water shortage. my country's per capita water resources are only about 30% of the world's average level. The shortage of water resources obviously restricts my country's economic and social development. The efficient treatment of sewage and the reuse of water resources are a difficult problem that our country must overcome at present. Under the environment of rapid economic development, various industrial sectors of the national economy have developed rapidly. These developments are undoubtedly accompanied by environmental problems such as a large number of sewage discharges. In recent years, my country's sewage discharge has remained high and has a tendency to increase year by year, and the e...

AI Technical Summary

Problems solved by technology

Drop water inlet and tidal flow water inlet operations have been gradually applied to practical projects due to their advantages of low energy consumption, efficient decontamination, and simplicity. However, relevant studies have shown that whether it is drop water or tidal flow , the supplemented dissolved oxygen will be exhausted in a short time after oxygenation, and cannot maintain a stable and long-lasting dissolved oxygen concentration, thus failing to achieve a good denitrification effect and the effect of preventing organic clogging

It can be seen that the current artificial wetland oxygenation technology cannot meet the continuous and efficient reoxygenation demand in the large-scale economic application of wetlands.

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