（1）high filtration precision: the precision can reach 1 micron；
filtration precision comparison picture
Internal adsorption when diatomaceous earth as filter media
Gap retention when silica sand as filter media
（2）light weight and small occupation decrease the investment cost；
space requirement comparison picture
（3）It can be cleaned in 1-2 minutes with less water；
（4）Polypropylene structure is more durable than steel structure；
（5）Operation management by high-precision PLC control system can be done with simple operations；
（6）For the dynamic load change of the swimming pool water quality, it has the control effect on pressure and time；
filtration performance comparison chart
（7）Diatomaceous earth is a kind of porous fossil with large pore size distribution, high porosity, strong ability to adsorb liquid, and can absorb liquid of 1.5-4 times its own mass. The surface of the particle has a negative charge, which can effectively adsorb organic compounds, high molecular polymers, proteins, metal ions, etc., can effectively reduce the urea content in swimming pool water. The silica sand filter uses physical methods to filter impurities. It is impossible to filter out the urea, and the method is only to dilute the urea by adding new water.
Swimming pool urea content comparison chart
