Passenger ferry from Penglai, Shandong to South Changshan Island，Then take the fishery administration boat to Daheishan Island，Finally, I changed to two fishing boats，It lasted two hours，Yi Zhongyuan and his colleagues finally landed on Nantuozi Island，This uninhabited island in the Bohai Strait was investigated for the outfall，According to the previous satellite and UAV aerial surveys，There are two suspected outfalls on this island。
Since June 24，The Ministry of Ecology and Environment sent 260 working groups to Tangshan, Hebei Province、Tianjin (Binhai New Area)、Dalian, Liaoning、Four cities in Yantai, Shandong Province carried out on-site investigation of the Bohai Sea sewage outlet，For the first time, the sewage outlets in the Bohai Sea region were investigated by "touching the bottom of the house".。During this year's national "two sessions".，Li Ganjie, Minister of Ecology and Environment, said at the press conference，In the entire comprehensive management of the Bohai Sea，The investigation and remediation of sewage outlets into the sea is a "bull's nose"。"The 'bull's nose' caught it，The implementation of the action plan will be more certain。”
Members of the Offshore Working Group conducted a lookout observation of the outfall。Photo by Cover News reporter Dai Rui
recently，The cover news reporter followed the working group of the Ministry of Environment to Changdao County, Yantai for a field visit。Changdao County is the only administrative region in this investigation that is composed entirely of islands。As the only island county in Shandong，Long Island County is made up of more than 150 large and small islands and reefs，It stretches from the Jiaodong Peninsula to the depths of the Bohai Strait。
The large number of islands was a relatively large challenge for the Working Group：Some islands are uninhabited，However, early aerial photography showed that there was a suspected sewage outlet on the island；Some of the islands are far away，It takes more than four hours to get there by boat from the main island；Some islands are not suitable for most ships，Task force members had to travel by fishermen's boats to get there。
The good news is that the preliminary work has laid the foundation for the on-site investigation，Previously，The environment department used satellite remote sensing and drone aerial surveys to analyze the sewage outlets of four cities, including Yantai，And the information of the suspected sewage outlets will be screened one by one and fall into the mobile APP。The cover news reporter saw it from the mobile phones of the working group members，to suspected sewage outlets，The app is marked on the map in the form of icons，And there are clear latitude and longitude coordinates。
The working group found a sewage outlet jutting into the sea。Photo by Cover News reporter Dai Rui
"Drone filming of something coming out，Or photograph a pipe-shaped thing on the beach，It will be marked as a suspected outfall，Specifically is it not，We need to verify and confirm on site。Di Wei, head of the Changdao Area Working Group, told reporters，Before this investigation，A total of 98 suspected sewage outlets were found in the Long Island area，Spread over multiple islands，It needs to be confirmed by the working group members on a case-by-case basis。
The two suspected sewage outlets on Nantuozi Island were discovered by drone aerial surveys in the early stage，Yi Zhongyuan and the members of the working group found it after landing on the island，This suspected outfall is actually an outlet for the sea cucumber breeding pond of local fishermen。Although the water discharged is relatively clear，The members of the working group immediately conducted on-site testing of the water quality of the outlet。
Yi Zhongyuan told reporters，According to the requirements of this investigation，The task force is required to conduct on-site testing of the water quality of all outlets that have water discharged，Abnormal water quality，The rear sampling group is also notified to take samples。The journalist noted，Task force members carry a variety of testing tools with them，Total phosphorus in water can be detected on the spot、Ammonia nitrogen、Chemical oxygen demand、PH value and other water quality indicators。The team members will upload these indicators and photos of the scene to the APP，Provide a foundation for post-analysis and governance。
Members of the working group take samples at the suspected outfall。Photo by Cover News reporter Dai Rui
The Bohai coastline is complex and diverse，Even with the use of advanced technologies such as drones，Some outlets may still escape the "eye of the sky"。For this，The relevant person in charge of the Ministry of Environment reminded the investigators at the previous kick-off meeting，Keep an eye on the "three times"，i.e. under the bridge、underwater、Blind spots for UAV aerial surveys such as understory，Sensitive areas where concealed outlets may be present。
In the investigation of South Changshan Island，Investigators found a pipe jutting into the sea。The team members passed the survey，It was learned that this was a sewage outlet for a breeding station，But because the sewage outlet is in the sea，Inspectors were unable to complete sampling and photographing。
"Fortunately, this investigation is equipped with a water working group，It cannot be checked on land，Can be done by the offshore team"，Di Wei told reporters，The water team patrols the boat，It can form synergies with terrestrial working groups，Ensure that the sewage outlet investigation does not leave dead ends。
Members of the working group conduct on-site testing of water quality。Photo by Cover News Reporter Dai Rui
In order to ensure the smooth development of the investigation，This time, the water working group of Changdao County specially selected members of the Zhejiang Zhoushan environmental law enforcement team who are familiar with maritime law enforcement to participate。Xiang Xinhua from the Zhoushan Ecological Environment Bureau told reporters，The water crew members took a boat to patrol around the island throughout the day，Look through the telescope to see if there are any sewage outlets that have not been photographed by drone aerial surveys。
"We mainly observe outfalls that cannot be found by the land group，Like under a cliff，The land group cannot be reached on foot，There are also pipes that reach into the sea，We need to get close to observe and confirm。"It's only two days，Xiang Xinhua and his water crew have found five previously undetected outfalls。
The reporter learned from the Ministry of Environment，2019before the end of the year，The investigation and monitoring of sewage outlets in all cities around the Bohai Sea will be completed。meantime，Encourage all localities to take the initiative to increase pressure，Adapt to local conditions，Carry out the task of tracing the source and rectifying the source，Clear rights and responsibilities are formed、Monitoring is in place、Regulated access to the sea、Supervision system for river outlets，Lay the foundation for the improvement of the ecological environment quality of the Bohai Sea and the Yangtze River。
source：Cover News Reporter Dai Rui
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