The electrician is responsible for the drainage facilities in the hospital. It is important to make sure that the drainage facilities are functioning properly.
Sewage treatment (sewage treatment, wastewater treatment): the process of purifying sewage to meet the water quality requirements for discharge into a body of water or for reuse. Wastewater treatment is widely used in construction, agriculture, transportation, energy, petrochemicals, environmental protection, cityscape, medical care, food and beverage and other fields, but also more and more into the daily life of ordinary people.
The topic of water pollution is constantly being raised, especially groundwater pollution, Hangzhou, Zhejiang Province, Wenzhou and other places there are farmers or entrepreneurs funded by the environmental protection bureau chief to swim in the river, as a way to draw attention to the severity of water pollution, although the various environmental protection bureau chiefs chose to remain silent or refused, but the people's awareness of the environmental protection of the awakening of the public, the degree of concern for water pollution has reached an unprecedented level.
Surface water pollution is obvious, but groundwater pollution is alarming. Seventy percent of China's 1.3 billion people drink groundwater, and more than 400 of its 660 cities use groundwater as a source of drinking water. But according to reports, 90 percent of the country's urban groundwater has been contaminated.
Another set of data also shows that groundwater is facing serious challenges. 2011, Beijing, Shanghai and other nine provinces and municipalities under the jurisdiction of 857 monitoring wells have evaluated the water quality of the monitoring wells for the class I, class II accounted for 2% of the monitoring wells, while the monitoring wells of the class IV, class V, as much as 76.8%.
Nine provinces and municipalities, the best water quality is in Hainan Province, mainly class II, Shanghai, Beijing, followed by more class III, Heilongjiang and Jiangsu is the highest proportion of class IV water, while Jilin, Liaoning, Guangdong, Ningxia, four provinces and regions in general only reached the level of class V.
The water pollution situation continues to intensify, making the sewage treatment and regeneration industry has been unprecedented attention, the last two years, the gross profit margin of each region are maintained at about 70%, and even more than 100% in some areas, the industry's development potential is very large.