Circulating well biodegradation structure for groundwater remediation

The circulating well biodegradation structure comprises an inner well and an outer well, a well opening is formed in the top of the inner well, gravel decomposition filler is arranged on the outer side of the outer well, a mounting mechanism is mounted in the inner well, and the outer side of the inner well is provided with a lifting mechanism. A first conveying pump and a second conveying pump are mounted at the two ends of the mounting mechanism correspondingly, a detection box is mounted on the inner wall of the inner shaft, and a first circulating pump and a second circulating pump are mounted at the positions, close to the bottom, in the inner shaft. According to the circulating well biodegradation structure for groundwater remediation, multiple technologies such as air stripping, air injection, vapor extraction, enhanced bioremediation and chemical oxidation are combined for remediation, oxygen and nutrient substances are provided for microorganisms in groundwater, biodegradation of benzene is accelerat