System and method for enhancing degradation of pollutants at low temperature

Abstract

The invention belongs to the technical field of water purification, and particularly relates to a system and a method for enhancing pollutant degradation at low temperature. The system comprises an wetland, magnetic materials and guide plates, wherein the magnetic materials are vertically arranged in the artificial wetland in an up-and-down staggered manner, and in an overlapped area of two adjacent magnetic materials and an area close to the ground, the guide plates are adopted to replace a part of the magnetic materials, so a magnetic field is uniformly distributed; and the magnetic materials and the guide plates form a blocking device, so sewage forms waveform subsurface flow in the artificial wetland. On the basis of a magnetic effect generated by introduction of the magnetic materials, a microbial cell membrane structure and a framework can be changed, so certain microorganisms generate higher resistance to a low-temperature condition to adapt to the low-temperature environment, and sewage can be in a waveform flow state in the artificial wetland and is in more sufficient contact with a matrix through the waveforms of the magnetic materials which are distributed in a staggered manner; and the system is suitable for treating urban domestic sewage and industrial wastewater with a temperature of 4-15 DEG C.

Description

technical field [0001] The invention belongs to the technical field of water body purification, and in particular relates to a system and method for enhancing pollutant degradation at low temperature. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] In recent years, emerging technologies related to sewage treatment have emerged in an endless stream, and constructed wetlands have attracted widespread attention due to their advantages such as low investment, stable effect, convenient management and environmental friendliness. However, the low temperature environment reduces the activity of microorganisms and plants in the wetland or even dies. Due to the reduction of microbi...

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Problems solved by technology

[0005] In order to solve the deficiencies of the prior art, the present invention provides a system and method for enhancing the degradation of pollutants at low temperatures. Based on the magnetic effect generated by the introduction of magnetic materials, it can not only change the structure and skeleton of microbial cell membranes, but also make certain microorganisms resistant to low temperature conditions. Produce stronger resistance to adapt to this low temperature environment. The staggered distribution of magnetic materials and deflectors can also make the sewage flow in a wave form in the constructed wetland, and more fully contact with the substrate; this system is aimed at constructing wetlands in winter Or when operating under low temperature conditions, it is easy to be affected by low temperature, resulting in a decrease in the removal effect of pollutants. An effective solution that can enhance the decontamination effect is proposed. The system is suitable for treating urban domestic sewage, industrial waste water

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