Alert!You may be in a “fake” spa

It’s cold and hot spring time again, but do you know what water can be called hot spring?How can ordinary citizens spot fake hot springs?With the arrival of winter, soaking in hot spring has become a popular choice. It can not only relieve physical fatigue, but also relieve mental pressure, especially for people living and working in the city, it is a good way to relax and keep healthy.With the continuous warming of “hot spring warm economy” around the country, now the concept of hot spring has been “generalized”, some fake hot spring also began to confuse the public and make up the number, causing a great loss to consumers.What kind of water can be called a hot spring?Ordinary people in hot springs, and what matters to pay attention to?Inquiry: What is “hot spring water” what is “hot spring”?In fact, so far there is no authoritative and official definition of “hot spring” in China.Gao Jianwei, senior engineer of the Physical geological data center of China Geological Survey, told reporters that hot spring is a valuable and multi-purpose hydrothermal geothermal resource.Only from underground holes or cracks naturally gushing, more than 25℃ (or spring mouth higher than the local average temperature 5℃), and contains trace elements beneficial to human health, can be called hot spring water.The genesis of hot spring is affected by natural environment and geological conditions, and there are different. In simple terms, it can be summarized into two categories: one is the sulfur hot spring formed by magmatism (or volcanism) inside the earth’s crust, and the other is the carbonate hot spring formed by surface water infiltration into the stratum.But there is a prerequisite for both types of hot springs: there must be geothermal for hot springs to occur.▲ Outdoor Hot Spring (Photo source:Visual) jian-wei gao said China, as a result of plate motion, some parts of the structure and magma activity (including volcanic eruption) are frequent, if lead to ground surface uplift tectonic plate movement, and cooling of lava, below will continuously heat release heat source, at this time if the porosity water-bearing rocks, near the heated water is poured, and hot springs.This kind of hot spring often appears in the geological movement relatively intense area, is located in Tibet’s Yangbajing hot spring, is a typical representative.The other is a hot spring formed by the infiltration and circulation of surface water.The theory is that surface water, such as rainwater, seeps down in some areas and enters aquifers inside the earth’s crust, forming groundwater.Groundwater is heated into hot water by geothermal beneath it. If there are tight, airtight layers above it, groundwater and gas will be locked in, and the pressure is increasing. Once cracks appear in the upper layers, groundwater will spewing out.Due to the large hydrostatic pressure difference, such hot springs are more common in valleys, such as Chengde city in Hebei Province, located in the Yanshan Valley, which is rich in geothermal water and was also called “Rehe” in the past.However, in recent years, with large-scale tourism development, the concept of hot spring has been generalized.Tylin Zheng, director of the Expert Committee of the China Geothermal Industry Working Committee, pointed out that in addition to natural spring water, geothermal water with temperatures higher than 25℃ extracted through underground Wells;Geothermal water heated and pressurized at the outlet of the flow is called spring water.It is in this general background of standard generalization that the current hot spring industry has been “mixed fish and dragon”, coupled with the uneven distribution of geothermal resources in China, and even the emergence of “fake hot spring” to make up the number, making “hot spring” become “expensive bath”, which has lost its own significance.Crack down on fakes: How to identify the “li Ghost” in hot spring?In addition to natural hot springs, there are many artificial hot springs in China at present. By drilling Wells, hot springs are produced from deep fault zones.Tylin introduced that this hot spring is also called hot spring well, and the water temperature can reach more than 25℃. Since it is artificially mined, it can only be called “hot spring” or “artificial hot spring”.But many hot spring well outlet temperature is low, coupled with the large loss of water temperature in the process of conveying hot spring, can not meet the requirements of customers, the need to use the way of heat exchanger to heat preservation, that is, in the process of conveying or outlet heating, this hot spring is called heating hot spring, is a kind of artificial method to compensate for temperature loss.As long as the water temperature, trace elements standard, only through heat exchange without water exchange hot spring can also be considered qualified.But some in the “water” on the behavior, is naked “fake products”.Gao said some of the spring water comes from the surface and is “heated” along pipes laid underground before returning to the surface to give the illusion of underground spring water.In some areas, the underground water is insufficient, so the hot spring water is repeatedly heated and recycled.This hot spring is very impure, and the natural formation of hot spring difference is very large, the effect is greatly reduced.What is more, some scenic spots or businesses that do not have hot spring conditions at all, in order to attract consumers, pretend to be hot spring water by adding sulfur powder and mixing artificial hot water, so as to achieve the purpose of impersonating the real one.According to insiders, the price of sulfur powder is not high, only 4-6 yuan per jin, but 1 jin of hot spring water made of sulfur powder is enough to use 40 square meters of pool, which is considered as a “high-yield product.”For many consumers, the main attraction of hot springs is their curative effect.Therefore, hot spring enterprises at all costs publicity.”Contains a variety of beneficial minerals and trace elements for human body, beauty, health, arthritis, skin diseases…”How can ordinary consumers distinguish true and false hot spring water?According to Tylin, the easiest way to judge it is by the tylin condition after soaking: true hot spring water comes from deep beneath the surface and contains a lot of sodium, making it soft, giving people a slight buoyancy and a smooth feeling of skin after soaking.On the contrary, the fake spring water is hard water, mainly composed of calcium, and the skin will turn white and wrinkle after soaking.It is also possible to tell whether hot springs are real or fake by location.Data show that China’s hot springs are mainly distributed in Xizang, Yunnan, Taiwan, Guangdong and Fujian, accounting for more than 50% of the total number of hot springs in the country, followed by Liaoning, Shandong, Jiangxi, Hunan, Hubei and Sichuan.Geothermal resources are mainly distributed in tectonic active belt and large sedimentary basin, the former is more concentrated, such as Tibet, Yunnan and Sichuan area, southeast coastal belt and Liaodong jiaodong area.The latter is widely distributed, such as the Beijing-Tianjin-Tangshan area in the North China Basin.”Geothermal resources are not abundant in northwest China, the Loess Plateau, the Huang-Huai Region and the Yangtze River Delta, especially in the Loess Plateau.”Gao jianwei said.Health care: Who is not suitable for hot springs?Many people like to soak in hot springs for more than half a day, but they do not know that such practice is likely to “soak too much”, or even physical discomfort, suffering from “hot spring disease”.In fact, according to the different ingredients in the water, hot spring can be divided into acid spring, alkaline spring and neutral spring: acid hot spring can promote blood circulation, improve blood vessel function, there is a certain bactericidal effect, but it is not suitable for patients with kidney disease and gastrointestinal problems.Alkaline spring has a certain effect on skin diseases, rheumatism, arthritis, but the “side effects” are also more obvious, for skin allergy is not very friendly, easy to “too hard”.▲ Bathing in hot springs is a popular way of leisure for citizens in winter (photo source:Vision China) especially alkaline spring is the most common of sulfurous springs, the people’s liberation army general hospital medical center of doctor of vice director of dermatology Cheng Jiqun tells a reporter, a sulfur spa if time is too long, the sulfur ingredient is easy to stimulate the skin, coupled with the big cities surrounding natural hot springs in itself is not much, artificial sulfurous springs is easy to cause the skin dry.If you constantly rub, the skin’s protective layer is seriously damaged, and it will become more dry and itchy.”Even people who have a poor skin foundation, such as those who are allergic, can develop dermatitis sclerosa, which is a skin rash and folliculitis caused by scratching and infection, which is clinically common.”Cheng Jiqun said.There are still some people, because the water temperature is high, the blood circulation is accelerated, may appear chest tightness, palpitation, shortness of breath, dizziness and other symptoms, and even lead to some basic cardiovascular disease patients with elevated blood pressure, resulting in a short period of physical discomfort.Cheng Jiqun suggested that patients with acute attacks of various diseases, patients with basic skin diseases, elderly people with chronic diseases such as hypertension, diabetes and heart disease, and children who have not yet grown up are not suitable for bathing in hot springs.”Especially in northern areas, the winter climate itself is relatively dry, ordinary people for a long time in hot springs is also easy to cause skin diseases, or to follow the principle of moderate amount, after soaking in hot springs to do a good job of moisturizing.If you can, you can go to a hot spring club with a high star rating or a hot spring with better sanitary conditions and water quality to reduce the incidence of hot spring disease.”Cheng Jiqun said.Writing/reporter terry Graphic editor/Chen yongjie interview experts jian-wei gao (China geological survey physical geological data center senior engineer) Zheng Ke Yan (geothermal industry working committee, director of the expert committee of China) Cheng Jiqun (the people’s liberation army general hospital dermatological department deputy chief physician) third medical center: science central kitchen producer:Beijing science and technology news | beike media welcome share to friends declined reproduced without authorization

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