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In the 2018, the 8th inspection team of the first phase of the urban black and odor water remediation inspection started again. On the same day, the reporter followed the inspection team to start looking back at the rectification work of the black and smelly water body in Hejiagou City.
In the third batch of urban black odor water remediation environmental protection special actions carried out in June this year, Harbin City and Qiqihar City became the city under supervision. There are 3 black and odorous water bodies reported by Harbin City, including Dongfenggou, Caojiagou and Hulan, which do not contain Hejiagou. When the 31st inspection team entered Heilongjiang Province, they received reports from the masses that there was water pollution in Hejiagou. Therefore, the inspection team went to Hejiagou to sample the coastal sections of the Songhua River estuary and Kang'an Bridge, and the results showed that the indicators of ammonia nitrogen, dissolved oxygen and transparency all reached the black odor water standard.
Once again, I came to Harbin, and the inspection team decided to return to the retreat of the black and odorous water in Hejiagou City. 》》》Paper chemicals
Renovation and sealing of the drainage outlets on both sides of Hejiagou
In June this year, the inspection team came to the sides of Hejiagou near Anyang Road and found that a smell had not come close to the shore. At least three drains are draining black stinky water, one of which is also blocked by a piece of rubber blue cloth. When the foamy, foul-smelting sewage entered the Hejiagou with the drainage pipe, the river became colored.
Recently, when the reporters visited this place again, they saw that the drainage outlets had been rectified and sealed and no sewage was discharged. The water quality was significantly improved and the floating objects on the river surface were cleaned up. Along the river course down to the 1.3km section of the lower reaches of Hejiagou, the inspection team found that the pungent smell was alleviated.
According to the investigation, there are three discharge outlets in the Anyang section of Hejiagou. There are two overflow openings, which discharge excess rain and sewage in the rainwater pipeline. One rainwater outlet discharges the rainwater from the surrounding roads.
It is understood that the main cause of water pollution is that the urban environmental infrastructure construction lags behind the urban development. The Qunli Sewage Treatment Plant at the intersection of Hejiagou and Songhua River is at full load, and a short spill occurs when the upstream water comes in sync. flow.
At present, the second phase expansion project of Qunli Sewage Treatment Plant has started construction, and plans to add 100,000 tons/day of sewage treatment capacity. It is expected that water supply will be commissioned by the end of 2018. item
After the completion of the project, the problem of insufficient sewage treatment capacity will be completely solved.
The reporter drove to the Hejiagou Harmony Avenue to plan the Longkui Road. There were citizens who reported that there were a lot of rubbish on both sides of the strait, and it was suggested to carry out regional upgrading. After on-site verification, the situation is basically true.
In order to solve the problems reported by the reporters, the management and protection unit will immediately clean up the embankment and embankment construction waste with the Seattle Community Development and Construction Unit, and combine the Harbin urban water system comprehensive management to study and formulate the planning outline and design plan for the upgrading of the surrounding area. Through three or four hundred meters of muddy roads, the reporter saw that construction waste on both sides of the embankment has been cleared.
1.3 km downstream of Hejiagou is expected to eliminate black odor before the end of the year
On October 16, the General Office of the People's Government of Harbin issued the "Working Plan for the Renovation of Hejiagou Black and Stinky Water Body".
The plan requires that before the new expansion project of Qunli Sewage Treatment Plant is not put into use, in order to solve the problem of direct discharge of domestic sewage overflow in Qunli District, emergency measures should be taken to alleviate the black body odor problem in the downstream section of Hejiagou in Daoli District: The sewage treatment capacity space was maximized, and the daily treatment capacity was increased by about 10,000 tons. The 27 drainage outlets along the Hejiatun section were inspected. It was found that the discharge exceeded the standard and the rectification was resolutely shut down. The system will renovate the existing rainwater and sewage confluence pipelines in the airport road area, and realize the rain and sewage diversion as soon as possible; lay two temporary pipelines (7 km from Ha Shuang South Road and 1.8 km from Kang'an Road), and adopt the method of wrong peaks to be discharged into Hejiagou. The sewage is diverted to the Wenchang and Pingfang Sewage Treatment Plant. The two plants need to take about 30,000 tons of sewage per day. Implement a 24-hour daily duty system to ensure orderly and safe peak-to-peak dispatching; centralized and comprehensive clean-up of the garbage along the river in Hejiagou and along the line.
The plan clarified the tasks of improving the water quality of Hejiagou, conducting pollution source surveys, implementing remediation projects, and establishing a long-term management mechanism as soon as possible.
On the basis of comprehensive investigation, we will adopt technical measures such as “control source interception, endogenous treatment, garbage disposal, and ecological restoration†to accelerate project construction.
Accelerate the construction of the upgrade, expansion and expansion project of Qunli Sewage Treatment Plant, and plan to achieve water supply commissioning before the end of 2018. The sewage treatment capacity will be increased from 150,000 tons/day to 250,000 tons/day, and the effluent standard will be upgraded from Grade B to Grade A. . According to the decision-making of the municipal government, dredging and dredging shall be carried out on the key sedimentation section of Hejiagou, and the release of sediment pollutants to the water body shall be avoided.
The problem of leakage and pollution of rainwater and sewage diversion pipelines along the Hejiagou line will be completely eliminated. The garbage along the line along the Hejiagou area (including the upstream Nangang District, Xiangfang District and Pingfang Section) will be cleaned up and centralized, and the garbage will be put into the river. It is strictly forbidden to build privately and keep the shoreline clean and tidy. Strive to achieve no large-scale floating objects on the river surface in the urban built-up area of ​​Hejiagou section before the end of 2018. There is no garbage on the river bank, no illegal sewage discharge, 1.3 km downstream of Hejiagou in Daoli District (Kang'an Bridge South to the dam to Songhua River) The entrance) black odor water is basically eliminated.
Editor in charge: Cao
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