a. When designing the RO system, there should be a comprehensive analysis of the water body. If there are periodic changes in water bodies (very common in groundwater) or changes in water sources (very common in municipal engineering power supply), try to obtain all the analytical data you can obtain and determine that they originate from new raw materials.

b. Conduct a 15 minute SDI (Relative Density Index of Environmental Pollution) experiment on the spot to determine the probability of colloidal solution pollution blockage.

c. If you want to have a good dream at night, make sure to have sufficient preparation when designing the RO system.

d. When designing RO (especially when there is a possibility of environmental pollution), space should be left. When designing RO reverse osmosis systems using clean river water as the water source for drainage, more radical designs than groundwater systems can be chosen.

e. In traditional RO system design, a lower water flux is used, as reducing the water production rate per unit membrane area will reduce pollutants in the membrane. For systems using river water as the water source for drainage, the designed water flux should be controlled within the range of 8-14 gfd (plus/square meter/day). For river water as a water supply and drainage source system, the designed water flux should be controlled within the range of 14-18 gfd.

f. The utilization rate should be set at a more traditional value to reduce the concentration of pollutants.

g. A traditional design should strive to improve the horizontal flow velocity of seepage and the flow velocity of concentrated water as much as possible. The higher the horizontal flow velocity, the faster the diffusion rate of membrane surface salinity and pollutants towards the aqueous solution of the behavior subject. Therefore, it can reduce the concentration values of membrane surface salinity and pollutants.

h. Select suitable types of membrane components for different application scenarios. Sometimes, when solving difficult groundwater and chemical wastewater sources, using charge balanced CAB (cellulose ester) membrane components is better than using negatively charged CPA (acrylic resin composite) membrane components.

e. Research whether there are RO reverse osmosis systems using the same seepage water source in your area.

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