Home / Environment / In Pictures Tools: Save | Print | E-mail | Most Read | Comment
Algae infests river near Three Gorges
Adjust font size:

The month-long algae outbreak on a tributary of the Yangtze River, blamed on large numbers of phosphor mines and processing factories, has sent an alert to environmental authorities to raise water treatment standards in the Three Gorges Dam area.

A resident scoops up a bowl of polluted water in Zigui, Hubei province. [China Daily]

Large areas of algae bloomed on June 16 on a 25 km section of the Xiangxi in Xingshan county, Hubei province, forcing thousands of residents to stop drawing water from it, the Xinhua News Agency reported Monday.

Cai Qinghua from the Institute of Hydrobiology under the Chinese Academy of Science, said: "This is the first time the Three Gorges Dam area has seen such a blue-green algae outbreak.

"The pollutants from many phosphor mines and chemical plants in the upper reaches of the Xiangxi River resulted in water deterioration."

An excess of blue-green algae removes oxygen from the water, killing fish and other aquatic life, which then decay and release toxins. Smelling foul, the water cannot be consumed by human and animals.

After the algae was found in the Xiangxi River, the local government took measures to improve water quality monitoring, including banning residents from taking water from the river, preventing fishing and organizing people to collect algae.

The algae expansion has slowed, Xinhua said.

Ma Jun, director of the Beijing-based Institute of Public and Environmental Affairs, told China Daily that besides checking on industrial polluters along the river, the environmental watchdog should reset wastewater treatment standards in the dam area.

"Construction of the dam has slowed the velocity of many rivers in the area, which weakens the self-purification capability of water body," Ma said.

"It is another reason why the Xiangxi River has rampant algae.

"The amount of pollution emissions the dam area is able to purify naturally should be recalculated. With a big reduction of pollutant emission budget, the pollution credits need to be allocated again," he said.

Ma also said wastewater treatment plants should strengthen treatment capability of phosphor and nitrogen.

The Xiangxi and six tributaries of the Yangtze saw algae blooms last year because of excessive amounts of pollutants pumped into them, a report by the Ministry of Environmental Protection said.

(China Daily July 22, 2008)

Tools: Save | Print | E-mail | Most Read
Comment
Pet Name
Anonymous

China Archives
Related >>
- Phosphor plants blamed for algae outbreak
- Algae cleaning in full swing
- Thousands battle algae bloom in Qingdao
- Algae in Yangtze tributary affects water for thousands
- Algae outbreak at Chaohu Lake
- Algae threatens 320,000 people in Anhui
Most Viewed >>
- Phosphor plants blamed for algae outbreak
- 3,000 swim across river to arouse protection awareness
- Arctic expedition team reaches Bering Sea
- 19 killed in Taiwan by Kalmaegi
- 10 rare flowers and plants in the world
Air Quality 
Cities Major Pollutant Air Quality Level
Beijing particulate matter II
Shanghai particulate matter II
Guangzhou sulfur dioxide II
Chongqing ------------------ I
Xi'an particulate matter II
NGO Events Calendar Tips
- Environmental English Training (EET) class
- Hand in hand to protect endangered animals and plants
- Changchun, Mini-marathon Aimed at Protecting Siberian Tiger
- Water Walk by Nature University
- Green Earth Documentary Salon
More
Archives
Sichuan Earthquake

An earthquake measuring 7.8 on the Richter scale jolted Sichuan Province at 2:28 PM on May 12.

Panda Facts
A record 28 panda cubs born via artificial insemination have survived in 2006.
South China Karst
Rich and unique karst landforms located in south China display exceptional natural beauty.
Saving the Tibetan Antelopes
The rare animals survive in the harsh natural environment of the Qinghai-Tibet Plateau.
More
Laws & Regulations
- Forestry Law of the People's Republic of China
- Meteorology Law of the People's Republic of China
- Fire Control Law of the People's Republic of China
- Law on Protecting Against and Mitigating Earthquake Disasters
- Law of the People's Republic of China on Conserving Energy
More
Links:
State Environmental Protection Administration
Ministry of Water Resources
Ministry of Land and Resources
China Environmental Industry Network
Chengdu Giant Panda Research Base