Mass fish-death probe eyes wastewater pipes
The mysterious death of over 100,000 fish in Nakhon Ratchasima province's Lam Taklong creek has prompted local environmental authorities to investigate the quality of water discharged from five suspected wastewater pipes and sewage-treatment systems.
Governor Chuan Sirinantporn yesterday instructed all related local authorities to investigate the fish deaths, including the Nakhon Ratchasima Municipality, Environ-ment Bureau Division 11, Nakhon Ratchasima Provincial Fisheries Office, Inland Fisheries Research and Development Centre, the Provincial Industrial Office, Provincial Public Health Office and the Suranaree University of Technology.
Nakhon Ratchasima Municipality Office and the Provincial Industrial Office also sent officials to collect samples and study water quality from a sewage treatment system and wastewater pipes inside factories located along Lam Ta Klong creek, particularly two ice factories near the Mall Department Store.
Results of the investigation are expected this week.
Chatphet Yosphon, of Suranaree University of Technology's Institute of Engineering, has visited the suspected area at Soi Sam Rong Chan to measure the level of oxygen in the water after the authority discharged water to flush waste from the creek.
He collected water samples from Khon Chum embankment behind The Mall Korat department store, Soi Sam Rong Chan, Wat Tha Ta Koh, and the VIP village.
His investigation showed the level of oxygen in water in all these five areas was lower than the standard.
At the VIP village it was only 1 milligram per litre, while at other areas it was 3mg per litre. He said most types of fish need 7mg per litre of oxygen in water to survive.
The result of his investigation will be released in the next three days.