Household water purifiers under the kitchen water purifier water purifier brand YiNeng Products purifier design by piping gradual tightening of classification can be divided into self-cleaning water filter and water filter two categories. Traditional water is getting tight, also known as progressive water purifier, its internal piping design filters before and after the tight loose, the PP meltblown filter, granular activated carbon, compressed carbon, RO reverse osmosis membrane or ultrafiltration membrane, after activated carbon, this is generally composed of 5 sequentially end to end. The machine line only this one path, dirt is deposited inside the filter requires regular artificial washable to ensure the normal operation of the machine. The other is a more advanced self-cleaning water filter, designed the machine two channels, adds a wash water passage, wash water and water purification have a complete path, the two prevails and let the water flow stand up. As usual ordinary domestic water wash water passes through the path of the machine in particular membrane cartridge filter raw water side play erosion in order to achieve self-cleaning effect, and use instant shutter two washing faucet that is already run off the head and tail water trapped dirt timely and rapid discharge, the structure properly designed, eliminating the trouble of artificial washable, eliminating the institution itself again pollution, while also reducing energy costs. However, consumers should pay attention to recognize, self-cleaning water purifier market is different from that seen in automatic sewage water purifiers, computer automatic washing water filter and automatic backwash water purifiers, the former is self-cleaning machine, that is, He said filter inside the machine all have a certain self-cleaning function. Popular speaking, self-cleaning water purifier in the pipeline corresponds to the security of the waste processor, dirt cleared out at any time, not in the machine stays. The traditional non-self-cleaning water purifier in the room set aside equal to more than trash, dirt, usually temporarily stored in the machine, so the need for regular sewage, washable and frequent filter replacement. 2 development of the early 19th century, the Rhine is very serious water pollution incident occurred (one of the world's water pollution incident three), 1826, Bonn, Germany, the Rhine water pollution spread to a small village, water has affected the local people's normal life, only 13 years old PaulEric (Paul Eric) to drink clean water, he decided to make a superhuman wisdom water purifier, after going through hundreds of failures, eventually he successfully invented the world's first net water heater, the water purifier is the thickness of the yarn with 20 bags filled with quartz sand and activated charcoal, activated carbon quartz sand in the middle, then this bag of water purification materials on top of the barrel, the contaminated water pour in gauze top, let the water slowly flows through layers of penetration into the barrels, after the final filtration rut sweet clear water, after many improvements PaulEric water purifier filter effects and more, caused by local government. With the general increase in people's awareness of water purifiers, water purification industry gradually rise, the development of domestic industry from net water began in the 1980s. Water is the source of life, drinking water quality and people's health are closely related. According to the World Health Organization (WHO) survey showed that 80 percent of the world's disease and 50% of child deaths are related to poor water quality and drinking water. China has a quarter of the population do not meet health standards for drinking water, "water pollution" has become China's main water environment. After years of drinking water and health promotion and popularization of knowledge, people drinking water purifier has gradually understand the impact of water quality on human health, more emphasis on safety of drinking water, which provides a great market prospects for the water purification products. Family home water purifier developed countries in Europe and 95% is already in use, while in the domestic household usage less than 5%, so water purifier in the country as well as the majority of the development. Since 2000, water purifier manufacturers to grow, water purification industry rapid recovery and growth. China water purifier industry has grown to more than 3,000 manufacturers, their number is still 30% -40% annual growth rate. 2014, by more than city tap water smell, benzene pollution in Lanzhou water, ammonia nitrogen pollution Han River, Jingjiang water pollution incidents, water purifier sales heat continues to heat up, rapid development of China's water purification industry, much irresistible force.