Method and system by using micro-nano bubbles to perform reinforcement in-situ remediation on polluted ground water

Abstract

A method using micro / nano bubbles for enhanced in situ remediation of polluted groundwater. A water injection pipe (7) is arranged in an upstream location of an area where the groundwater is polluted; micro / nano bubble water having a nutrient salt is introduced into the pipe. The micro / nano bubble water having the nutrient salt flows with the groundwater to the polluted area, decomposes an organic pollutant or continuously replenishes electron acceptors / donors for microorganisms, and facilitates the degradation and removal of the organic pollutant. While at the same time, a water extraction pipe (17) extracts water at the downstream of the polluted area and forms a groundwater flow field. A monitoring well is used for real-time monitoring and analysis of parameters during the removal process of the organic pollutant, while the occurrence time of the micro / nano bubbles and the amount of aeration are adjusted. Also provided is a system using the micro / nano bubbles for enhanced in situ remediation of the polluted groundwater. The micro / nano bubbles have a great oxygen-supplying effect, an extended duration, and a great range of influence, compensate for deficiencies of regular in situ remediation technologies such as natural degradation and bioventing, are of reduced costs and energy efficient, and are applicable in remediation of sites of limited area and of high pollution load.

Description

technical field [0001] The invention belongs to the technical field of remediation of polluted groundwater, and in particular relates to a method and a system for strengthening in-situ remediation of polluted groundwater with micro-nano bubbles. Background technique [0002] Environment and development are major issues of common concern to the international community today. In order to achieve sustainable development, environmental protection and governance should be an integral part of the development process. As an important part of global water resources, groundwater resources play an extremely important role in economic and social development under the condition of serious surface water pollution in our country. In recent years, due to the rapid development of social economy and the massive production of industrial waste, the problem of global environmental pollution has become increasingly serious. At present, the quality of groundwater in my country is deteriorating ...

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Problems solved by technology

In addition, in high-concentration areas such as pollution sources, the effect of microbial degradation is greatly inhibited due to the obstruction of microbial activity by pollutants.

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