Water quality improvement project of a certain ditch in northwestern Wuhan City - application of ultra-nano gas-liquid oxygenation system

Project Overview

This ditch is an important drainage channel for the surrounding area. Schools, businesses, residential areas, and scenic parks are densely distributed around it, with heavy traffic and a large flow of people every day. However, due to the mixed connection of the surrounding drainage networks, the ditch is easily polluted whenever it rains.

Current Situation

Even on sunny days, the water is black and has very poor fluidity. A large amount of suspended matter floats on the surface, and the transparency is extremely low (less than 10 cm). Aquatic plants and animals cannot survive. Due to the lack of oxygen at the bottom of the water body, a large amount of bottom mud is overturned, seriously affecting the surrounding landscape environment and the lives of nearby residents.

Solution

The water area is reoxygenated using a super-nano gas dissolved oxygen system. Injecting high-concentration dissolved oxygen into the bottom of the water body can quickly improve the water body's redox environment, accelerate the recovery of aerobic microbial communities in the water body and bottom mud, increase the degradation rate of organic pollutants in the water body, inhibit the anaerobic decomposition of high-concentration organic pollutants, and ultimately solve the problem of black and odorous water.

Treatment Effect

(1) Within two days of the system operation, the dissolved oxygen began to gradually rise, finally stabilizing at 16 mg/L, with sufficient dissolved oxygen in the water body.

(2) After using the super-nano gas dissolved oxygen system for 1.5 hours within the enclosure, the odor of the water body significantly weakened and gradually disappeared.

(3) The transparency increased to 70 cm, and benthic organisms recovered.