In winter, some large shopping malls, hotels and office buildings central air-conditioning power to work again. Enjoy the warm at the same time, however, few people are concerned about whether the wind blowing out clean. In fact, long not cleaning, disinfection of the air conditioning internal hidden startling bacteria. Since this year, the municipal department of CDC has centralized central air conditioning unit in charge of 11 health condition monitoring, announced the day before yesterday, according to the results of the ventilation system tests, thirty percent of total number of fungi, twenty percent of the total number of bacteria.
Central air conditioning ventilation system hidden bacteria
In the monitoring report, the reporter noticed that the city center for disease control and prevention, monitoring the PM10, dust capacity, eosinophilic lung legionella bacteria in cooling water, etc. 8 projects. Among them, the ventilation system in the monitoring of the total number of bacteria, fungi and beta hemolytic streptococcus, dust in the microbial monitoring of the total number of bacteria and fungi.
It was found that the ventilation system of beta hemolytic streptococcus, total number of microorganisms in the bacteria in the dust, and eosinophilic lung legionella bacteria in the water all qualified. Problem the larger is the total number of bacteria and fungi in the ventilation system, thirty percent of total number of fungi, twenty percent of the total number of bacteria. In addition, PM10 percent of pass is 90.9%, in the amount of dust and dust microorganism fungus in total percent of pass is 95.5%.
City CDC integrated health monitoring division deputy section chief, said Yao Qingbing so far this year, the centers for disease control and prevention were sampling monitoring 11 units, including shopping malls, hotels, hotel, etc. Each unit to collect two outlet, the outlet is a total of 22, the monitoring, focusing on the ventilation system. Yao Qingbing tells a reporter, 11 units, all items are eligible only six, unit monitoring percent of pass is only 54.5%.
Large selling floor air pollution a bosom is frowsty
5 o 'clock yesterday afternoon, reporters came to the west side, a large supermarket. Packed inside the supermarket, at this time to come to shopping citizens in an endless stream. Reporter walked into the supermarket at the gate of less than 5 meters, will feel the air inside the supermarket is cloudy, not fresh air at the door. Supermarket temperature is higher, give a person a kind of feeling of chest tightness.
Went a circle, in the supermarket sales of clothing and bicycle, under fine smell can still smell the leather in the air, close to the cooked food stalls, and the smell of thick oil and fry, wen jiu irritated evil desire to vomit.
Reporter ask a sales staff, sales staff said is not clear whether the supermarket ventilation system has a cleansing experience. In her memory, however, the class for two years, haven't heard of ventilation system cleaning, as for the inside of the air, are basically in this way, time is long also didn't feel anything.
Subsequently, the reporter also visited several hotels and shopping malls, it is roughly same, not businessmen of the public to the indoor air quality。
Professional cleaning company for 3 years only a single cleaning business
In the modern plaza, the reporter found a hoau cleaning cleaning company. The company introduced on the Internet, is a collection of central air conditioning, purifying air conditioning, commercial/household central air-conditioning installation, maintenance, maintenance, disinfection, pipeline cleaning in the center of the professional. In the face of reporters, general manager zhang said, basically nothing about central air-conditioning cleaning cleaning business.
Reporter noticed that the company printed page flyer and personal business CARDS, are not about central air conditioning clean the business. Facing reporters questions, zhang said, at the beginning of the company is the business, founded in 2011, in partnership with another company to do the service, but basically it's not a business, so gave up later, basically do not do the business at the moment. "Since we started this business, more than a year to do only a single related business, now have to give up this business for two years." Zhang said.
The reason analysis
High cost penalty light cleaning not positive
According to the city center for disease control and prevention monitoring report, the our city centralized central air conditioning in public places health situation is not optimistic, there is a certain health security hidden danger. The reporter learns from the centers for disease control and prevention, the city is only active in one or two units of central air-conditioning cleaning, the city's only two or three qualified professional cleaning mechanism. Yao Qingbing said, the unit does not take the initiative to cleaning the central air conditioning for a reason. First of all, the cleaning cost is higher, some units reluctant to spend money; Second, are not in accordance with the provisions, cleaning, health supervision department of penalties is very light, it also makes the standardized management of the central air conditioning is absent.
According to zhang, as a result of ventilation pipe cleaning is difficult, you need to use the robot cleaning and inspection. In a four-star hotel controlled 300000 guest rooms, for example, if want to undertake, including ventilation pipe cleaning, costs about 300000-500000 yuan, and time-consuming, may affect the business. A lot of units in order to save money is clean, or to clean up the air supply outlet position only.
Sweet remind 】 【
Should avoid going to large supermarket stores for a long time
Subei hospital respiratory physician said that the air in public places is the main reason of the bad people too crowded, plus the ventilation is not enough。 Some stores foot traffic, especially during the holidays, crowded environment is easy to cause carbon monoxide, carbon dioxide content in indoor air exceeds bid, people prone to hypoxia symptoms, such as dizziness, headache, chest tightness, if the bacteria in the air, will also cause the disease。 Winter is respiratory tract infection disease incidence season, warm indoor air bacteria content in the relatively high, it is easier to cause upper respiratory tract infection, disease such as rhinitis, pharyngitis, and bronchitis。
To this, the doctor suggested that marketers should strengthen the sanitary quality of the air inside the premises of the control and improvement, and people should try to avoid the supermarket and public place for a long time, and try to choose the population density is small, the air quality of a good place to shopping。