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Hello, the pressure difference of the reverse osmosis front-end security filter element rises very fast. what is the reason? The pretreatment is a multi-media filter, and the operation is normal. Hello, there is this problem, it is necessary to detect the water quality of the UF production water and the water quality of the reverse osmosis security filter inlet end, and analyze from the following two aspects:First, if the ultra-filtration produces water into the ultra-filtration water tank before reverse osmosis, consider the pollution of the water tank;1. if it is a water tank made of PE or glass fiber reinforced plastic, considering the biological pollution of the ultra-filtration water tank, the reverse osmosis water inlet security filter element will be blocked and the pressure difference will increase.2. if it is a water tank with a steel-mixed structure, it is necessary to consider the anti-corrosion stripping of the water tank lining or biological pollution.Two, if there is no pollutio