Jiangning District of Nanjing high pressure water jet cleaning sewer cleaning of the main advantages: 1, low cleaning costs: First, high-pressure water jet medium used is water, it is easy to source, ubiquitous. In the cleaning process, the strong energy, and without adding any detergent filler can be cleaned, the low cost. Secondly, saving water and energy, water and fire of this cleaning method is different from the case of fine jet spray nozzle diameter used only 0.5-2.5 mm, the water consumption of only 3-5 m3 / h, used the power of the power of 37-90 kilowatts, it is water and energy saving devices. 2, good quality cleaning: cleaning pipes and heat exchanger inside the hole, fouling material and can clog the tube removed all the clean metal body can be seen. Has tremendous energy and high pressure water jet to supersonic motion can completely destroy the hard Filthes and obstruction, but the metal does not have any damaging effects. While due to high pressure or water pressure is less than the compressive strength of a metal reinforced concrete, the effect of the pipeline without any damage. Achieve high-quality cleaning. 3, the cleaning speed: As the water jet (water bombs known abroad) erosion, wedge splitting, cutting, grinding and other composite crushing effect, you can immediately Filthes broken off. It cleaned than traditional chemical methods, sand blasting method, a simple mechanical and manual methods several times to several times faster. 4, no environmental pollution: water jet cleaning like sand blasting and mechanical cleaning as simple to produce a lot of dust, atmospheric pollution, damage to human health. Chemical cleaning is also not as produce large amounts of acid, alkali waste pollution can channel, soil and water quality. Is tap water jet media, odorless, tasteless, non-toxic, after the jet nebulizer can reduce the concentration of airborne dust in the work area, make atmospheric dust by the other methods of 80 mg / cubic meter down to the state safety standard of 2 mg / cubic meter, the eradication of silicosis source, eliminating the pernicious influence of acid waste is an important measure of China's environmental protection cause. 5, metal corrosion: As pure physical methods, it has no corrosive effect on metal. 6, the application of a wide range: all water jet can be directed to the site, regardless of pipes and containers cavity, or equipment surfaces, but also whether it is hard Filthes, or solid obstruction, it can be from the mother immediately and thoroughly clean, cleaning methods such equipment materials, features, shapes and types of fouling no special requirements, only requires the ability to direct, so it is widely used.