China 2t UF and RO Water Treatment Equipment Reverse Osmosis Machine, Ultrafiltration System, Water Treatment Ultraviolet, Salt Water Desalination Equipment, Find details about China RO Water Plant, Water Purifier from 2t UF and RO Water Treatment Equipment Reverse Osmosis Machine, Ultrafiltration System, Water Treatment Ultraviolet, Salt Water Desalination Equipment
Items | Permissible Value | Probably Consequence of Excessive Standard | Improvement Suggestions | |
Suspended solids | Tubidity | <1NTU | Sludge ,colloid pollution | Flocculation and filtration |
SDI15 | <5 | |||
Metal oxides | Fe ( mg/L) | <0.05 | Iron Pollution | Oxidation precipitation/filtration |
Mn (mg/L) | <0.05 | |||
Scale forming matter | CaCO3 | LSI<0 | Concentrated water side does not permit scaling | Decrease recovery rate , PH value , or add scale inhibitor |
Other insoluble salt | / | |||
Organics | Oil | 0 | Organics and oil | Air |
TOC (mg/L) | <10 | Organics pollution | Activated carbon adsorption , filtration | |
CODcr (mg/L) | <10 | |||
BOD5 (mg/L) | <5 | |||
Si (mg/L) | <20 | Colloid pollution | ||
PH | 3-10 | Too low or too high PH will accelerate the aging speed of membrane | Regulation of Acid-base | |
Temperature | 5-45°C | Low temperature will easily produce scaling of undissolved salt High temperature will accelerate the aging speed of membrane | Heat exhanger | |
Oxidizer | Residual chlorine (mg/L) | <0.1 | Membrane system will be oxidized | Reductant or aclivated carbon adsorption |
Ozone and others | 0 |