Hanoi Sewage and Drainage Company workers apply Redoxy-3C in Nghia Tan lake (Photo: VNA) Hanoi (VNA) – The quality of water in many lakes in Hanoi has been improvedconsiderably, leading experts said at a meeting on March 6 to review theone-year using of Redoxy-3C, a water purification product made in Germany tothe order of the capital city to tackle pollution in lakes.
Accordingto the Hanoi Sewage and Drainage Company, Redoxy-3C has been used since September2016 in 86 lakes inside the city and 44 others in the outskirts.
Asa result, pollution level in the lakes reduced significantly without harmingaquatic creatures, while the oxygen ratio in water becomes higher.
Prof.Dr. Tran Hieu Nhue said that although the result is positive, it is necessaryto use Redoxy-3C regularly and properly to ensure long-term efficiency.
Accordingto the Hanoi Sewage and Drainage Company, the using of the product is among itsshort-term solution. In the long term, it is necessary to raise publicawareness of protecting lakes and water in the city.
According to the Centre for Environment and CommunityResearch (CECR) report released in 2015, the number of lakes in Hanoi decreasedto 112 from 122 between 2010 and 2015. The water surface also droppedby72,000sq.m compared to 2010.
Data from the CECR analysis showed that a lot oflakes, which were once beautiful spots for the city’s residents to visit andenjoy, were seriously deteriorating due to rising levels of pollution.-VNA
VNA
