Method and system for improving total nitrogen removal rate of carbon-nitrogen imbalance tail water wetland for environmental management

Abstract

The invention discloses a method and system for improving the total nitrogen removal rate of a carbon-nitrogen imbalance tail water wetland for environmental governance, and the method for improving the total nitrogen removal rate of the carbon-nitrogen imbalance tail water wetland for environmental governance comprises the following steps that: S1, tail water to be treated flows through a primaryfilter tank, a water return pipe and a water quality sensor I are arranged at the water outlet end of a filter tank, the water quality sensor I is in communication connection with a central control system, water at the water outlet end is discharged to a stabilizing tank and can flow back to the inlet of a primary filter tank through the water return pipe; S2, after the water flow is filtered andthen stands in the stabilizing tank, the water flow is stable, and the oxygen content, the carbon dioxide content and the water temperature are basically stable; S3, a wetland formed by a deeper water pool is adopted as a three-dimensional water pool; and S4, a surface flow wetland is provided with temperature sensing equipment used for detecting the water temperature of the surface flow wetland.

Description

technical field [0001] The invention relates to the field of tail water biological treatment, in particular to a method for improving the total nitrogen removal rate of carbon and nitrogen imbalance tail water wetlands for environmental governance. Background technique [0002] As the 21st century, the environment has become more and more concerned by the country and people, and people hope for a good environment. However, on the other hand, after simple treatment of industrial, agricultural and other domestic water, that is, the tail water, sometimes it has reached the national discharge standard, but the nutrient level in the water is still high, so it is directly discharged into the lake or Rivers will lead to trophicization of lake water, leading to red tides and rapid growth of water hyacinth, which in turn will affect the ecology of the lakeside. [0003] On the other hand, Constructed Wetlands (Constructed Wetlands) is a treatment system similar to swamps that is art...

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Problems solved by technology

Judging from the operation effect of existing constructed wetlands, there are still some shortcomings in the treatment of sewage with low carbon-to-nitrogen ratio (abbreviated as: C / N): 1. Insufficient carbon source leads to poor microbial denitrification effect; 2. Poor seasonal adaptability, The treatment effect is poor under low temperature conditions; 3. The adsorption capacity of the filler for phosphorus is low. After a long-term operation of the constructed wetland, it is easy to reach adsorption saturation and block the filler area, resulting in a decrease in treatment efficiency

[0008] 1. At present, it is mainly to use the alternate planting mode of cool-season plants and warm-season plants. However, because cool-season plants mainly live in colder seasons such as winter, and colder seasons such as winter are due to low temperature and long sunshine hours Relatively short, so the metabolism of plants such as photosynthesis is slow, so the planting area of ​​cool-season plants is generally larger than that of warm-season plants at present, as mentioned in the above-mentioned patent. It can treat the tail water more stably, but this will inevitably lead to a waste of wetland area in summer, and it is more stretched in winter;

[0009] 2. At present, the use of aquatic plants for tail water treatment relies more on the self-indulgent state of aquatic plants. In case of emergencies, such as special conditions in the nutrition of tail water, the growth of aquatic plants may not be good, resulting in tail water treatment. It is not perfect, and this zero tolerance for tail water pollution is obviously inappropriate;

But so far, there is no effective way to solve the above technical problems in the prior art

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