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The To Lich River began to be cleaned, the Capital residents satisfied their longing
GiadinhNet - A pollution treatment machine with Nano technology has just been placed under the To Lich river. During these hot and suffocating days, the people of the Capital will "hold their breath" waiting for the miraculous change expected in this river.
To Lich river in the heart of the Capital is seriously polluted. Photo: Bao Loan
The To Lich river cleaning project started
Under the direction of the Prime Minister and the Hanoi People's Committee, the project "Sponsoring a pilot to clean a section of To Lich river and a corner of West Lake with Japanese Nano-Bioreactor technology" has just begun to be piloted, given to use, at the beginning of To Lich River. This project is believed to significantly improve the environment, overcome the stench for a long time, to "reborn" the To Lich river.
According to technical explanations from Japanese experts, electric-powered machines, which are submerged in the river, create a stream of diffused nano gas into the water, stimulating the microorganisms to work, thereby solving the problem. oxygen release, waste sludge treatment, creating a cleaner water flow. Although the design is quite simple and compact, but these machines, which can handle up to 1.35 million m3 of wastewater per day and night, 9 times the amount of waste water that To Lich River must continue received in the same time. From there, it can be expected that waste water is always treated thoroughly without any state of sedimentation and stinking in To Lich river.
Satisfaction of the inhabitants of the Capital
Wastewater treatment machine is piloted at the watershed of To Lich river.
Before this information, many people of the Capital "hold their breath" to wait for the miraculous change in this river section and believe in the success and effectiveness of the project. Especially during these hot, stuffy days. By the dream of renovating the "dead river" of the people of the Capital that has been cooked for decades. In particular, at the end of 2018, Hanoi City People's Committee received a proposal of an enterprise to renovate To Lich River into a tourist destination and exploit its economic potential. Although the proposal has encountered many conflicting opinions and analysis. However, many people of the Capital still anxious, looking forward to a stream of "dead river" renovated, cleaned, returned to the open space and become an inherent tourist and trade point of the river.
Sharing with Reporter Family & Social Newspaper, Nguyen Thi Tam (65 years old, in Kim Giang Street, Hanoi) said: “If not residents living near the To Lich river basin, they cannot feel it all. pollution of the river. The stench goes into the house regardless of morning or afternoon. Especially in the afternoons, the direction of the wind changes, my family has to close the "medicine" to avoid the odor emanating from the river. It can be said that the level of pollution of this historic river is getting worse, because the lower the downstream, the higher the level of pollution compared to the upstream, the darker, dirty and unloaded river water. stench. Therefore, the people living near To Lich River like my family really want to, the river is renovated ”.
Similarly, Mr. Vu Van Phien (66 years old, at 39 Giap Nhat street, Thanh Xuan) said: “In fact, the To Lich river has been a" dead river "for decades, it is difficult to clean. Because I want to handle this polluted river, I think first of all to treat waste water as sewer pipes day and night discharging waste water into the river, it is worth noting that the polluted water system must be put into separate collection road, after That is just cleaning the river. But I believe in Japan's national technology and hope, the project is successful. If the project really meets the long-term expectation of the people, Hanoi authorities need to replicate throughout the river, especially downstream area from Nga Tu So section stretching to Dinh Cong and Hoang Mai areas. ".
According to Mr Phien, in order to increase wastewater treatment schedule, the waste discharge system in the city area to To Lich river needs to be stopped or have a separate direction. Preventing pollution flows into the To Lich River is the basis to avoid "running and polluting machines still increasing" to help operating wastewater treatment machines and achieve optimal efficiency.
Although people support the pilot project to clean up the To Lich river and hope to "spread" throughout the river. However, some comments also expressed concern, the project is unlikely to succeed. Because the water source of To Lich River today is a waste water discharge, it is difficult to clean it if there is no clean water source. Moreover, To Lich River receives 150,000m3 of dirty waste water dumped daily, this treatment does not make any sense. The urgency is to treat from the source of pollution, from the consciousness of each person to not throw waste waste indiscriminately into the last river to treat the river. It is also necessary to consider the plan to pump Red River water through West Lake to saturate a large part of waste water into To Lich River. Long-term investment is to build a separate wastewater collection system and filter it before returning it to the river. There is such a way can be thorough.
According to the Center for Environmental Resources Monitoring and Analysis (Hanoi Department of Natural Resources and Environment) - the unit conducting water monitoring of To Lich River in 2013: Dissolved oxygen is 2 times lower than the standard. The amount of chemical oxygen in water (COD), biological oxygen in water (BOD5), coliform in water, total suspended solids (TSS), total oil, fat, ammonium content (NH4 +) ... exceeded the standard for permission many times.
