Japanese experts considered the method during the rainy season, when the West Lake water was discharged, it was not carried away to wash the experimental results of the To Lich river cleaning.
As expected, after 2 months, Nhat Viet Environment Improvement Joint Stock Company (JVE) will report to Prime Minister, People’s Committee of Hanoi City on a pilot project to clean a section of To Lich river and a corner of West Lake by technology. Nano – Japanese Bioreactor.
However, the discharge of more than 1 million cubic meters of water from the West Lake to the To Lich River affected the results, JVE had to apply for a pilot for another 2 months.
After postponing the announcement of results, yesterday, JVE had a press conference by the West Lake to inform about the upcoming pilot plan, the solutions so that the next water discharges and storms do not affect the To Lich river.
15 minutes notice and then flush
Mr. Nguyen Tuan Anh, JVE Chairman, confirmed that he did not receive notification of water discharge directly.
JVE technical staff has received a notification of water discharge at about 9:30 am on July 9, shortly after about 10-15 minutes, Hanoi Sewerage Company conducted the water discharge.
Discharging 1.5 million m3 of West Lake water into To Lich River, Japanese experts could not cope.
According to Mr. Tuan Anh, when receiving the discharge notification, both Japanese experts and JVE were passive, the pilot unit could not respond in 10-15 minutes.
1.5 million m3 / day as in the last flush, is 10 times the amount of water flowing from 280 discharges flowing along the To Lich river. This amount of water does not flow through 280 sluices but only flows into one sluice at the head of the river, exceeding the original estimate of Japanese experts.
Japanese experts have calculated from the beginning, despite the heavy rain, the upstream flow is not as large as the direct discharge of 1.5 million cubic meters of water recently.
Dr Takeba Akira, an advisor at the Japan-Japan Trade and Environment Promotion Organization, said: “With the West Lake water swept away beneficial microorganisms triggered by the Bioreactor plates, we are not responsible for any unit. both, this is an objective
Dr. Takeba Akira.
Regarding the ongoing Lich river cleaning projects, Japanese experts also said that the problem of cleaning the river is not simply the discharge of West Lake water or cleaning with Japanese technology.
According to him, the river must have water for input, which To Lich River now relies entirely on sewage flowing from 280 sluices. Therefore, it is advisable to clean the inside of the river first and then let the water in, increasing both the water flow and creating river flows. Then the beneficial organisms created by the nano machines will be distributed from the beginning to the end of the source.
“2 solutions of drainage company and Japanese expert, if combined, will revive the To Lich river properly”, Mr. Tuan Anh added.
To Lich River piloted another 2 months.
Build “apartment building”, do not allow water to wash away microorganisms
Japanese experts have developed plans so that the Bioreactor placed in the river bed will still activate the microorganisms and retain these creatures, no matter if discharging West Lake water or discharging more strongly, it will not be washed away. result.
“Experimental bodies in the To Lich river are like apartment buildings, microorganisms are the same as the people living in that apartment building. Soon, we will apply the biological measures to prevent the apartment building from being washed away by floodwaters. “
Biotech-applied pallets will help protect
The biofilter media will help protect, prevent water from swept away beneficial microorganisms when draining water.
Regarding operating costs, the Japanese expert confirmed that this project was 100% funded from Japan at the beginning, so even though it lasted for 2 months, Japan continued to sponsor, the Vietnamese side did not have to pay any cost. come on.
Japan is still sponsoring and piloting completely free the To Lich river cleaning project.
incident so we are trying to fix it. “