Qinxiangyu is located in the downstream of Qinglong Mountain and Taohua Mountain in Binhu District, Wuxi City, on the south side of Xuegang Road, with a catchment area of ​​nearly 3 square kilometers. For a long time, due to the influence of the old pipe network in the residential area of ​​the upstream city and the military camp near the river, the rain and sewage mixed into the box culvert, resulting in serious pollution of the water in the river, and the black odor problem has long plagued the residents around the river.
In order to improve the water quality and repair the water ecology in Binhu District, Wuxi City, in August 2016, the District Water Control Office and the Civil Affairs Department organized relevant streets and resident troops to jointly discuss regional water control plans, and formed the “military and civilian water control for Taihu Lake. The work consensus of the source of pollution interception and protection of the people's livelihood. At present, the river has no black odor, high transparency and obvious results. It has been well received by the surrounding people and has written a new chapter in the management of the military and the people.
In order to increase the intensity of pollution control, since 2015, with the support of the city and district, Liyuan Street has invested 10.2325 million yuan, using controlled source interception, dredging and dredging, ecological restoration, initial rainwater treatment, etc. The engineering measures will fully promote the Qinshui water environment improvement project.
First, the pipe network is designed to divert rain and sewage. The street invested 2.6 million yuan to review and rectify the four drainage drainage areas in the upper reaches of the river, the military camp area and the surrounding areas. At present, the army is controlling the source and interception project. A total of 2,659 meters of sewage pipe network will be built, 380 meters of sewage pipe will be rectified, 174 new sewage wells will be built, 12 septic tanks will be rectified, 4 oil separation tanks will be rebuilt, and new rainwater branch pipes will be 220 meters. 26 new rainwater wells will be built and will be completed in the near future to fully realize the full coverage of the rainwater pipe network renovation around the river.
The second is the initial rainwater control source interception. The street invested RMB 4.05 million to build an initial rainwater treatment station to effectively improve the initial rainwater treatment in the upper reaches of Qinxiangyu, with a designed treatment capacity of 3,000 cubic meters per day. The treatment station raises the raw water to the purification equipment, and after mixing the coagulant and the flocculant, it thoroughly mixes and reacts with the initial polluted rainwater, flocculates, and the clean water after the completion of the sedimentation treatment is discharged into the river channel, thereby improving the water quality from the source.
The third is dredging and dredging endogenous pollution control. The relevant departments of the street and district invested 1.598 million yuan to carry out dredging of the upstream tanks and rivers, effectively controlling the endogenous pollution of the water carriers.
The fourth is ecological restoration and self-cleaning. The street repairs the river water ecology by promoting the construction of ecological filters. Invest 800,000 yuan to plant aquatic plants in the river, set up floating buoys, plant bitter grass beds, and build ecological floating islands. In the form of push aeration, fountain aeration, etc., the oxygen content of the water body is increased, and the self-purification ability and biological life aerobicity of the water body are further improved.
At present, all the projects have completed the main project, the ground recovery, rainwater pipeline communication project and other tail workers have recently completed, Qin Lane 浜 gradually restored the water body self-purification ability. According to the environmental protection department of the district, the water quality of the river is completely rid of black odor. The average water quality in January-October this year is V-type water, and there have been cases of Class III water quality in May. The water quality monitoring results during the special inspection showed that the ammonia nitrogen concentration was 1.46 mg/L, which was in line with the surface water V standard.
In the next step, Wuxi Binhu District will actively create a good atmosphere of “hydrophilic, water-loving, water-saving and water-protectingâ€, and provide a good humane environment guarantee for Qin Xiangyu’s “Changzhi Jiuqingâ€. Solidly promote the deepening of the work of the “river-long system†on the street, continuously improve the daily supervision and assessment of the riverside and the river chief, and earnestly create a boutique river course of “Shuiqing, Shore Green, River Chang, Jingmeiâ€.
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