How is the Hoan Kiem Lake Mud smoked?

The renovation of Hoan Kiem Lake (HHK) has been closely directed by Hanoi People's Committee. A few years ago, scientists of the University of Natural Sciences (Hanoi National University); Institute of Environmental Technology; The University of Mining and Geology and the Technical University of Dresden and the Federal Republic of Germany have focused their research on this issue.

German expert inspects operation of dredger - Photo: Nguyen Duoc

According to Associate Professor, Dr. Nguyen Dinh Hoe (Hanoi National University): 'The HHK has a special ecosystem, where there are rare and precious turtles living, including spiritual meaning, so the renovation of the Lake should be ensured. safe'.

Exactly 10 o'clock yesterday, the machines and equipment to suck mud and renovate Hoan Kiem Lake (HHK) began to suck the first mud flow. At noon 11 hours, Mr. Nguyen Van Khoi - Vice Chairman of Hanoi People's Committee, who is in charge of HHK renovation, came to the scene to direct the pilot to suck 1000 m ^{2 of} mud under the lake.

Talking with scientists, Mr. Nguyen Van Khoi said: 'The suction of mud, does not disturb the bottom and the lake surface is very good. Maybe every one or two days, we should have an experience meeting to see what is the problem? For example, a camera should be placed right at the mouth of the straw in the mud, to facilitate timely processing. '

After one day, the amount of sludge sucked up immediately in the machine reached 70 m ³ , equivalent to 150 m ^{3 of} un-pressed mud (liquid). The pressed mud looks like chocolate bars.

Dried mud looks like chocolate bars - Photo: Nguyen Duoc

It uses a vacuum with a capacity of 50 m ³ / h, but in fact only let the machine operate 30m ³ / h. The machine works after 5 minutes to rest a bit. People have used two interlocking pipes to bring from the machine to the bottom of the lake, a steam pipe to make the mud tube. The displacement of the nozzle mouth is controlled from the shore.

It is expected that the 1,000m ² bottom dredging phase will be completed on November 26, 2009 (10 days). 1000 m ^{2 of the} mud will be pressed into 400 m ^{3 of} dry mud and transported to the gathering place in the yard outside Yen So.

Hopefully, after being renovated, Hoan Kiem Lake will become more beautiful, embellish the landscape and regulate the environment of the clean green Capital.