Saturday, June 15, 2019, 00:30 (GMT + 7)
Since the water level in the To Lich River is low, nano aerators need auxiliary equipment to cope with the pollution on the To Lich River.
4 Japanese technology nano aerators, located under the river To Lich, still work stably
On June 14, after nearly a month of nano-bioreactor technology was introduced into the To Lich River on Hoang Quoc Viet Street (Kau Gai district, Hanoi), the PS was present at the scene.
As already noted, 4 aerators are still working normally. The water level in the river is quite low, and there is a mud gap on the bank. The river water in the first area of the Hoang Quoc Viet gutters (the first part No. 1 and 2) is shallow, black, yellowish, muddy water flows out of the sewer.
3 and 4, the water section of the jacuzzi is deeper, the surface layer looks transparent, but still, as a rule, black. Standing on the shore, the stench was greatly reduced.
River water in the catchment area is rather low, revealing whole coastal mud
A technical officer at the Joint Stock Company of Japan for the Improvement of the State of the Environment of Vietnam (JVE), present on the banks of the To Lich River, said that after the laying of the riverbed, aerators were still stable.
Recently, a pump was added to the river between jacuzzi 1 and 2. As explained to the JVE technical staff: “This machine provides water pumping back upstream to help dissolve the mud in To protect the shore, while providing more water for No. 1, since water in the river is low. "
JVE technical staff talked more, on the afternoon of June 14, Mr. Nguyen Tuan Anh – the chairman of the board of directors of JVE also visited the To Lich section of the river, which was processed by Japanese nano technology.
Part of the river To Lich is located at the mouth of the river before it flows through the jacuzzi.
It is estimated that on Monday morning (June 17), experts will continue to take water samples from the To Lich River to test and evaluate the effectiveness of the technology after 1 month of operation.
After 2 weeks, according to the JVE report, the basic technology of the nano-bioreactor meets the requirements when the To Lich smell of the river decreases significantly and the mud thickness decreases in accordance with the expected rate. before placing the device.
In particular, river silt capacity is significantly reduced. In particular, at point B 50 m from the sewage zone of Hoang Quoc, the thickness of the drilling fluid decreases from 91.3 to 72 cm. At point C 110 m, the thickness decreases from 96.7 cm to 76 cm. At point D at a distance of 210 m thickness drilling mud is reduced from 87.7 to 79 cm.
The new pump is equipped with a section between the jacuzzi number 1 and number 2
Earlier, on May 16, Hanoi implemented a pilot project for cleaning and cleaning the To Lich river using Japanese bioreactor technology. The pilot project is carried out by a Japanese group of experts in cooperation with the Japanese joint-stock company to improve the environment of Vietnam.
Four nano-aerators and natural bioreactor panels were placed in the upper part of the To Lich river at the beginning of the Hoang Quoc Viet road (Kau Gai district). Japanese experts said that when installing bio-nano-aerators, after 3 days, the smell of the To Lich river will decrease and after 1-2 months the indicators of water monitoring will reach national technical standards. on surface water quality.
Experts checked the To Lich River mud thickness indicator after many days of installing nano aerators, and the results are very …