Abstract: The Liangxi River on the beautiful mother river in Wuxi will become a stinking ditch in the future. Recently, some netizens posted in a well-known forum in Wuxi that the Binhu District Water Conservancy Bureau used the name of the National Development and Reform Commission (2011) No. 136 as a banner to build a sewage reservoir in the Liangxi River dam. After the construction of the pool, it will not only affect the lives of the surrounding residents, but also damage the Liangxi River landscape belt that Wuxi spent great efforts to transform and even endanger the Liangxi River and Taihu Lake water sources. Reporter's investigation: The construction of a drainage pump is designed to make the neighboring Sun Jiang Xin Village more than 100 households no longer suffer from flooding during the flood season.

Complaint: The mother's river will build a sewage reservoir. This netizen lives in the Sumitomo family's homeland in the Binhu District. He said in his post that the Binhu District Water Conservancy Bureau will build a sewage reservoir next to the Liangxi River. Liangxi River is the mother river in Wuxi, with the Grand Canal in the east and the Taihu Lake in the west. “Build dams at this water conservancy hub to build a sewage reservoir and occupy 1551 square meters of river surface. This is a great danger to the water of the Liangxi River and contaminates the water of Taihu Lake, and it will damage and destroy the city government for a few years. With great efforts to get out of Liangxi River, the riverside residents will suffer from bad smells and can't open doors and windows in the summer. This netizen painted a picture in his post. The picture shows that the reservoir was built at the junction of Liangxi River and Sumitomo Home.

Question: Is it a sewage reservoir or a drainage pump station?

The reporter arrived at Sumitomo Family Park on February 27th. Near the Liangxi River, the reporter saw that the sewage tanks mentioned by the netizens had not yet started. According to information provided by netizens, the reservoir was built in the landscape belt of the Liangxi River, belonging to the pro- A water area surrounded by water platforms.

According to a local knowledgeable person, Sumitomo Homestead was built in the 1990s and is located in part of the Liangxi River. The main road on the west side of the plot was originally a river, and the river now runs down the main road. The insider revealed that the Binhu District Water Conservancy Bureau is not building a sewage reservoir here but a drainage pumping station. Because, after the construction of Sumitomo homes, there was a series of problems in the local area. Due to the poor drainage channels, the old village near Sumitomo’s homeland was often flooded during the flood season. “This village is just tens of meters away from the village of Sun Jiang New Village. There are many buildings with low topography. Every time during the flood season from May to July, it has been flooded for more than ten years.”

Survey: More than a hundred households are flooded every flood season. “From 1996 onwards, we have been flooded every year.” Ms. Zhao, who lives at No. 211 Sun Jiang Xincun, told reporters that her family was flooded for the first time in 1996. 6 On the 30th. In the past ten years, each year has reached the flood season, and the family has become restless. Some losses have long been incalculable.

Sun Jiang Xin Village No. 201 to 223, both in low-lying areas, affected more than 100 households during the flood season, including many elderly and disabled people. "After the water was flooded, many electrical appliances were damaged. Sometimes, drowning in the water at home, and feeling that the feet are numb, should be caused by the leakage of electricity." Ms. Zhao said that during the flood season last year, even a family of domestic dogs was The water was electrocuted.

A householder at Sun Jiang Xin Village No. 210 told the reporter that since 1996, the floor has been repaired three times because of flooding at home. In the face of floods that are expected every year, the family already feels exhausted. “Although every year during the flood season, people in the water conservancy department will come here to pump water with the pump, but the effect is not obvious. Several pumps have been turned on in one year. After more than half an hour, the water level is still high.”

Reasons: The village is too low and the river is flooded during the flood season. "The reason why the drainage pump station was built was based on local conditions and was discussed several times." The quarter chief of the Binhu District Water Resources Bureau's business department told the reporter that due to the 2007 During the summer, the large-scale cyanobacterial outbreaks in Taihu Lake prevented the Taihu Lake water source from shutting down. It was unable to discharge water to Taihu Lake and changed the original flood discharge conditions in the Lake District. The canal became the only drainage channel, and Liangxi River became a fishing port, Rongxiang, The flood corridors in Hexi and other areas cause high water levels in the Liangxi River and the rivers along the coast.

In 2007 and 2011, the Liangxi River exceeded the historical maximum water level by more than 4.8 meters. Due to the high water level of the Liangxi River, the old residential areas in the Sun Jiang area suffered from low altitude and there were more serious internal disasters. There were more than 100 households entering the house. . “At that time we also went to see, even to the Liangxi River dredging, and then let the workers go down the river and found that there are seven drainage pipes with a diameter of 1.5 meters below, with up to forty to fifty small pipes.” Quarter Chief said. These rainwater pipes were connected to various places in Sunjiang Xincun, respectively. If it is in peacetime, there is no problem. However, during the flood season, when the water level of the Liangxi River is higher than the height of the Xincun, the water will pour into the community.

Response: The pump station will not affect the Liangxi River According to the introduction of the water conservancy department of Binhu District, the project is currently undergoing the “Wuxi City Development and Reform Commission” Xu Fachang Xuantui (2011) No. 136 “On the Flood Control and Drainage Project in the East Area of ​​Liangxi River. The approval of the project proposal was approved, the planning department selected the site for the project, and the construction of the drainage pump station would not affect the water quality and landscape of the Liangxi River.

In the 1980s, Sun Jiangyi was still an open river. Later, as the rainwater pipes in the upstream Laoxin Village all passed through the box and culvert, when the Liangxi River was at a high water level, flooding in the box culverts could not cause flooding. Therefore, a drainage pumping station must be established near the exit of the container and culvert to reduce the water level of the box culvert and solve the problem of internal defects.

It is understood that the lowest place in the local area is only about 4.3 meters. Therefore, in the design, through the establishment of gate control, when the water level of Liangxi River is less than 4.3 meters, the water in the box culvert enters the sewage pipe network through the sewage pumping station and does not enter the pumping station. Rainwater catchment pool; At the same time, the pump station catchment and Liangxi River are also provided with gate control. Usually the gate is open, and the rainwater catchment is connected with the Liangxi River. If necessary, the power can be exchanged through the pump station; during the summer blue algae outbreak, the gate can be closed to block cyanobacteria. Outside the catchment.