At present, most of the enterprises in Chongming Island in Shanghai do not emit volatile phenol, so the water department cannot determine the source of the substance, and the investigation of the pollution source is still in progress.
The incident of Chongming tap water quality anomaly, which lasted for several days, had preliminary findings yesterday. Chongming County Government revealed yesterday that according to the results of sampling, monitoring and analysis of water sources, water production process and other links, the phenol in the water source of Chenjia Town Water Plant in the county exceeded the standard (note: phenol is a colorless needle shaped crystal with special smell. Phenol is a common chemical and an important raw material for the production of chemicals, preservatives and chemicals).
At about 21:00 yesterday, Chongming County updated the information that the water quality of the water intake river, the factory water and the household faucet had reached the standard, and the tap water was ready for drinking.
Pollution source investigation is still in progress
Since 10:00 am on the 20th of this month, Chongming Water Affairs Department has received calls from the public, reflecting that the tap water has a peculiar smell. On the 21st, the government of Chongming County responded for the first time to the peculiar smell of tap water reported by residents through its official microblog. He said that the water quality of tap water in some areas of Chongming was affected due to the recent intrusion of salt tide. This conclusion is based on the fact that Chongming Island was greatly affected by the salt tide in previous years.
Yesterday, the relevant departments of Chongming County updated the information that the pollution source that caused the odor of tap water quality of residents living separately in Chongming County was volatile phenol. According to Chongming County Government, after receiving a call from citizens, the County Water Affairs Bureau sent people to the site to investigate, sample, test and analyze the raw water source, water preparation process, quality of factory water and other links. It was found that the measured value of phenol in the water source sample at the water intake of Chenjia Town Water Plant was 8 μ g/L, while the national standard limit was below 2 μ g/L. It was preliminarily determined that the phenol in the raw water source exceeded the standard.
It is confirmed that this water quality impact affects about 100000 residents in Chenjia Town, Zhongxing Town, Xianghua Town and outpost area in Chongming County. At present, most of the enterprises in Chongming Island do not discharge volatile phenol, so the water department cannot determine the source of the substance, and the investigation of the pollution source is still in progress.
In order to improve the water quality, the water department has adopted such methods as putting in powdered activated carbon and granular activated carbon, adjusting the water production process, etc. to restore the water quality as soon as possible. As of 11:00 a.m. yesterday, the measured value of phenol in the water sample taken by the water authority from Chenjia Town Water Plant was below 2 μ g/L, in line with the national standard. However, for safety reasons, health experts still recommend that residents temporarily choose barreled or bottled water when drinking, cooking and cooking.
11 fire trucks are dispatched to supply water
Yesterday, Chongming dispatched 11 fire trucks from 5 fire squadrons to 9 water delivery points, so that residents can get water for free nearby.
At about 19:00 * on the same day, the reporter arrived at Xianghua Town again. At this time, a fire truck is stopping at the intersection of Xiangwei Road and Xiangmin Road to supply water to residents. People hold buckets, kettles and other large water holding tools, and line up to fetch water one by one. The team meanders more than 100 meters. Everyone has to wait for about half an hour from queuing to getting water.
"Just in the afternoon, I received an order to dispatch all fire trucks with water tanks in the detachment to supply water in different blocks." Jin Xin, a firefighter on the scene, said that each fire truck was equipped with four firefighters to serve all residents who came to fetch water. "There is no limit for residents to fetch water."
The reporter learned that the water stored in the fire truck came from Baozhen. According to the information provided by the water department, the tap water there is not polluted. From 16:00 * yesterday to 20:00, Jin Xin and his comrades in arms drove the fire truck to deliver water to the residents three times, each time totaling 3 tons. There are more than 2000 households in Xianghua Town, where they live.
Chongming Fire Detachment said that from 15:00 to 20:00 yesterday, fire trucks delivered more than 60 tons of domestic water to the affected residents.
It is recommended to drain the tap * clock
In fact, before the fire truck came to deliver water, people had to find ways to get clean water. Ms. Zhao, a resident, said that for several consecutive days, the tap water gave off a smell of burning. Some neighbors had persistent diarrhea symptoms after boiling them for drinking. The barreled purified water in supermarkets was snapped up, so those villagers who still had wells in their homes became "convenient water points"
At about 14:00 yesterday, residents of Xianghua Town found that the quality of tap water was significantly improved. The color of tap water was not yellow and the taste was not smelly, but the smell of bleaching powder was strong. But whether it can be eaten is still unknown.
He Yongdi, a resident of Xianghua Town who lives at home, described that the staff of the neighborhood committee informed everyone one by one yesterday afternoon that they would first turn on their taps to drain the contaminated water stored in the pipes. Chongming County Water Affairs Department suggested that residents should drain water from the tap.
Residents will receive water subsidy
At 21:00 yesterday, the official microblog of the county once again released information that the municipal and county environmental protection, water affairs, health and other professional departments conducted continuous monitoring on the Chenjia Town Water Plant. * The new monitoring results show that the water quality of the water plant's intake river, the quality of the factory water, and the quality of the household faucets have reached the standard, and the incoming water can be used as drinking water.
The municipal environmental protection bureau also revealed that it had sent relevant experts to Chenjia Town, Chongming County. By 10:00 yesterday morning, the municipal environmental protection department had conducted emergency sampling analysis on a total of 10 monitoring sections 3 kilometers upstream and downstream of the water intake of Chenjia Town Water Plant and surrounding areas. The monitoring data shows that the concentration of volatile phenol in all sections meets the standard for Class III surface water. It is reported that the monitoring work of the environmental protection department will continue according to the actual situation.
The government of Chongming County introduced that the waterworks will subsidize 5 tons of water for each household to the affected residents in Chenjia Town, Zhongxing Town, Xianghua Town and Outpost.
