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

Abstract

The invention belongs to the technical field of polluted ground water remediation, and particularly relates to a method and a system by using micro-namo bubbles to perform reinforcement in-situ remediation on polluted ground water. The method comprises the steps of: arranging a water injection well at the upper reaches of a region with ground water polluted by pollutants, and feeding micro-nano bubble water containing nutrient salts; leading the micro-nano bubble water to flow to the polluted region with the ground water, so as to decompose the pollutants or continuously compensate electron acceptors or electron donors for microorganisms and facilitate degradation and removal of organic pollutants; at the same time, arranging a water pumping well to pump water at lower reaches of the polluted region, so as to form a subsurface flow field; and using a monitoring well to monitor and analyze parameters in real time during the process of removing the organic pollutants, and adjusting the generating time and the aeration intensity of the micro-nano bubbles. According to the invention, the micro-nano bubbles are good in oxygen supply effect, long in lasting time and wide in influencing range, the method and the system provided by the invention can make up the shortages of common in-situ remediation technologies such as natural degradation, bioventing and the like and are low in cost and high in energy-saving efficiency, thereby being applicable in remediation for a field with a limit area and a 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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