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Missions from the Department of Water Resources Management are working on the lack of water in Da Nang.
The lack of water due to the penetration of the river, the hydro is not enough water supply?
At the meeting, Mr. Ho Huong, Da Nang Water Supply Joint Stock Company (Dawaco) General Manager, said the cause of the widespread water shortage in Danang recently due to salinity in Cau Do River suddenly rose. In addition, this year's rainfall is a low record, the upstream hydropower tanks can not discharge enough water to provide the water with water to live in the city.
Deputy Director of Water Resources Management Department Tran Vinh Tran (White Shirt) to investigate the actual water supply at Cau Do Water Factory – Da Nang
According to Huong, the Tractor Pump Station has 6 pumps, of which 4 are moving and 2 are spare parts. In the case of 4 pumps with designed capacity, the total capacity per day and night varies from 196,000 to 217,000 m3. The raw water transport line from An Trach pump station to the Water Do Water unit was designed with a capacity of 210,000 m3 / day. Therefore, the amount of raw water from a tractor pump station at the Cau Do Water Factory factory reaches a maximum capacity of 210,000 m3 / day. Meanwhile, daily water demand in Danang is 270,000 m3 per day.
At the time when the Cau Do River was contaminated with seawater, the raw water from the An Trach pump station was not enough to supply drinking water. Many businesses, homes with maximum water storage. As a result, Dawaco had to shut off the rotary water, leading to an extensive lack of water.
At the same time, the Department of Natural Resources and Environment of Ho Chi Minh City was recorded in Da Nang water shortages (4-7 / 11), Cau Do salinity regularly kept above 1,000 mg / l, peak day above 4.300 mg / l (while salinity only allows 250 mg / l). However, Dak Mi Hydropower has been flushed through the landing port after the dam to meet the demand for raw water for TP. Da Nang during the water supply period in Cau Do River. Thanks to this coordination, the water level in the An Trach dam increased above the level of dead water.
The record low rainfall, hydroelectric is equally dead water level
According to representatives of the hydroelectric power stations in the two provinces of Quang Nam and Da Nang, although it is a rainy season, this year's rainfall is low, so the dams die, even under the dead water.
In the rainy season, but the rainfall in the previous record, Cau Do River water is salty, not enough raw water for the water factory.
According to the representative of the A Vuong hydro power, the water in the tank is just 1.1 m higher than the water level. Over the past year, Vuong's hydroelectric power has increased in downstream but not significantly. On the annual rainfall in the Vu Gia basin at this time the lowest since 1977 to date.
A spokesman for Song Tranh Hydropower said the volume of the lake in October is 70 m3 / s by 27% on average for many years, very exhausted. In November, the main flood was 43.5m3 / s, or 10% on average for many years. Compared to the 45-year cycle, this is a low record. At present, the salt infiltration state in Hoi An, Duy Xuyen (Quang Nam) is very heavy.
Representatives of hydroelectric power propose to have water storage options, adapting electricity production, because the prospect of drought will be very serious, it is difficult to supply water downstream and ensure energy security.
Recognizing the comments at the meeting, Chau Tran Vinh – Deputy Director of the Water Resources Management Department, said this year's flood is very special. All the traffic, the capacity of irrigation of the lake is 70-80% lower. A high risk of drought occurs in the autumn of next year in the Vu Gia – Thu Bon basin. Therefore, four large reservoirs should be closely monitored, in close cooperation with the authorities, related services in Quang Nam, Da Nang.
As far as managing the operation of the Dawaco water system, Vinh said that through the on-site investigation, from the beginning of the flood season to the present day, the water source for the Cau do water plant is operating. The lack of water due to high salinity is related to plant function. Mr Vinh proposed early solutions to improve operational efficiency by ensuring that water supply is continuous and stable for people.
There An
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