Device for carrying out ecological treatment on sewage with low carbon nitrogen ratio

Abstract

The invention discloses a device for carrying out ecological treatment on sewage with a low carbon nitrogen ratio. The device which comprises a reactor, a peristaltic pump, a sewage sedimentation tank, a rotameter, an aeration pump, two time controllers, a sludge collection box, a sewage regulating box and an overflown wastewater collection box, wherein the reactor is divided into five chambers including a first anaerobic chamber, a first aerobic chamber, a second anaerobic chamber, a second aerobic chamber and a third anaerobic chamber by using baffles, and the five chambers are all internally provided with artificial waterweed eco-bases, and perennial ryegrasses are planted at the upper parts of the five chambers. By using the device disclosed by the invention, the synchronous removal of nitrogen and phosphorus in sewage with a low carbon nitrogen ratio can be realized in the way of continuous water feeding and intermittent aeration; meanwhile, the device disclosed by the invention has the advantages of simple equipment, ecologization, short process, low energy consumption, and less investment.

Description

technical field [0001] The invention relates to an ecological treatment device for sewage with a low carbon-to-nitrogen ratio. Background technique [0002] At present, my country's water pollution problem is serious, and the phenomenon of eutrophication in water bodies is becoming more and more prominent, which has become one of the main factors restricting my country's economic and social development. Nitrogen and phosphorus are the main factors and limiting factors that cause eutrophication of water bodies. Therefore, it is particularly important to effectively control the discharge of nitrogen and phosphorus from point sources and non-point sources. Nitrogen removal through nitrification-denitrification process is the most commonly used and mature biological denitrification technology at present. Sufficient carbon source is the key to efficient denitrification by denitrification. Theoretically, 1g NO 3 - -N denitrification needs to consume 3.7g COD, so C / N is less tha...

AI Technical Summary

Problems solved by technology

[0004] According to the current situation of pollution source discharge in my country, most of the discharge sources are scattered, and it is difficult to centralize the treatment of wastewater

At the same time, for the vast number of economically and culturally backward areas, the mature biological denitrification process with complex operations cannot be effectively applied and promoted

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