The average consumption of energy by industries above a designated size in the coastal port of Dalian was equivalent to 16 million tons of standard coal in 2018, a decrease of 6.35 percent in 2017. Of this, six high-energy industries reported a 7.11 percent decrease year on year in energy consumption. Meanwhile, 18 out of 41 industries saw average energy consumption reduced that year, among which seven reported a more than 10 percent fall.
Concentrations of sulfur dioxide (SO2), nitrogen dioxide (NO2), respirable particulate matter (PM10) and fine particulate matter (PM2.5) in Dalian met national secondary standards in 2018. The air quality index (AQI) went for 300 days above Grade 2 – an indication of good air quality – in 2018, and 93 days were at the grade one, or excellent level.
Water supply sources—the Biliu River Reservoir, Yingna River Reservoir and Zhuanjiaolou Reservoir — were all in line with Class III water surface standards. The water quality of the Buliu River and the Yingna River, collected from different sections, met the standards.
In 2018, the average equivalent sound level in the city was 53.1 decibels. The sound levels in functional zones met the standards, at 92.1 percent during the days and at 73.2 percent at nights.
At the end of 2018, the daily treatment capacity of urban sewage treatment plants was 1.04 million cubic meters. The treatment rate of domestic sewage was 96 percent and the bio-safety treatment rate of domestic waste reached 100 percent.
In 2018, the city’s central heating system served a 149.75 million-square meter area during winter, an increase of 2.3 percent year on year. Meanwhile, the area of the city’s greenland covered 17,355 hectares. The park and green land per capita was estimated at 11.3 square meters.