Beijing has been at pains to stress it will not ease up in the "war on pollution" launched five years ago even though the economy grew at its slowest rate since 1990 last year.
The air quality index in Chiang Rai, where Thailand will host the meeting this week, reached levels considered unhealthy, government data shows.
Designating the issue a "disaster" allows the government to use parts of its reserve funds to help respond to any damage or emergency caused by polluted air.
The technology uses 78 percent less energy than producing standard bottled water, has a lower carbon footprint, and is about a third cheaper, Generation Water says.
The unveiling comes just months after China's decision to stop collecting and processing plastic waste escalated alarm over environmental damage to the world's oceans.
After two months, the legislation’s impact on residents’ daily lives is less than impressive.
The plan drew immediate criticism from environmentalists who said it lacked a clear framework to tackle toxicity levels that have led to millions of deaths.
China prosecuted more than 3,500 people for pollution-related crimes in the first 10 months of the year, up nearly 40 percent on a year ago, law enforcement authorities said.
Skin ailment afflicts nearly 170 villagers who gathered shellfish in Thanzit River in southern Rakhine
Hotels in Phuket aim to reduce the use of plastic, tackling the garbage that washes up on the shores, and educating staff, local communities and tourists alike.