Self-aeration device based on reed straw biological membrane and application

Abstract

The invention discloses a self-aeration device based on a reed straw biological membrane. The self-aeration device comprises a biological membrane carrier and a self-aeration biological reaction device, wherein the self-aeration biological reaction device comprises a cylinder cover, a stainless steel shaft, a self-filled body and self-aeration equipment; the top of the self-aeration biological reaction device is covered by the cylinder cover; an electromotor for driving the stainless steel shaft to rotate is arranged on the cylinder cover; the middle part of the self-aeration biological reaction device is a net cylinder shaped filling body; a plurality of biological membrane carriers are arrayed along the edge of the filling body; the self-aeration equipment comprises a gas mixing chamberwhich is arranged at the bottom of the filling body and an aeration tube which penetrates through the filling body longitudinally; the aeration tube is communicated with the filling body; the stainless steel shaft penetrates through the filling body and the gas mixing chamber in sequence from top to bottom; a plurality of impellers are arranged inside the gas mixing chamber and at the bottom of the stainless steel shaft; the stainless steel shaft and the impellers are driven by the electromotor to move synchronously. By adopting the self-aeration device based on the reed straw biological membrane, the biological membrane carrier is made of reed straw, the self-aeration device can be widely applied to treatment on black and odorous riverways, and environment pollution can be reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment ecological engineering, in particular to a self-aeration device based on reed straw biofilm and its application. Background technique [0002] The regulation of urban black and smelly rivers is a clear task deployed by the country's "Water Ten Measures", and it is also a battle for the masses to improve the urban living environment. High TOC (TOC≥150mg / L), high ammonia nitrogen content (>8 mg / L), and low DO content (<2 mg / L) are the main characteristics of black and odorous water bodies. In the actual treatment process, the method of aeration is adopted to improve the supply of dissolved oxygen in the water body and the oxidation capacity of pollutants, so as to achieve the purpose of restoring the water quality of the water body. However, ammonia nitrogen is usually difficult to remove under the above conditions, mainly because the removal of nitrogen under aerobic conditions requ...

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Problems solved by technology

[0007] In order to solve the current problems of expensive biofilm carrier, difficult to degrade, poor suspension, toxic and harmful, and easy to cause secondary pollution after being discarded, the present invention proposes a self-aeration device and its application based on reed straw biofilm. It has the advantages of slow release of carbon source and strong adsorption, which not only improves the purification ability of natural black and odorous rivers for pollutants, but also provides a direction for the resource utilization of reed straw

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