Automatic EDI Water Treatment System / 250LPH Ultrapure Water Plant Pure Water Process

(1) EDI and RO are used together to adjust the current to change the quality of the water. The standard module combination is used to change the water output. More than ten years of commercial application shows that the system operates stably at a pressure of 100 psi (7 kg/cm2), the effluent resistivity can reach 16 M8·cm or more, and the Si content is below 20 ppb. The water quality is reliable and can meet the current maximum. Strict industrial water quality requirements, water output can be as high as 2000 gallons / min (450 cubic meters / hour).

(2) EDI does not use recycled resin, eliminating the need for resin chemical recycling facilities (such as acid and alkali storage tanks, pumps and pipelines) to simplify the structure of pure water system equipment, save investment, simplify operation and reduce operating costs.

(3) The technical and economic comparison also shows that EDI is more adaptable to the change of TDS in the influent than the mixed bed system without affecting the quality of the effluent, and has little effect on the cost of water production.

(4) EDI environmental benefits are significant, in two aspects: 1 overcome the wastewater pollution caused by resin chemical regeneration; 2EDI discharged concentrated water can be directly used before returning to RO, so that EDI unit can achieve no wastewater discharge.