Inventor
DUAN MENGYUAN
CN9 patents
Patents
9 patentsUS11772999B2Oct 3, 2023
System and method for treating reverse-osmosis concentrated water with high temporary hardness
GREENTECH ENV CO LTD2 citations69
US12486179B2Dec 2, 2025
Control method for delaying nanofiltration membrane aluminum fouling of water treatment system
GREENTECH ENV CO LTD0 citations48
US12162783B2Dec 10, 2024
Saline wastewater treatment method and system
GREENTECH ENV CO LTD0 citations48
US12145869B2Nov 19, 2024
Hollow fiber nanofiltration membrane system and control method thereof
GREENTECH ENV CO LTD0 citations48
US11772995B2Oct 3, 2023
Total nitrogen removal device for sewage and method for operating the same
GREENTECH ENV CO LTD0 citations48
US11760675B2Sep 19, 2023
System and method for treating printed circuit board (PCB) wastewater
GREENTECH ENV CO LTD0 citations48
US11440819B2Sep 13, 2022
Dosing control method and system for micro-flocculation in ultrafiltration
GREENTECH ENV CO LTD0 citations48
US12509374B2Dec 30, 2025
System and method for softening high-salinity water via self-induced calcium bicarbonate crystallization in fluidized bed
GREENTECH ENV CO LTD0 citations46
US12151210B2Nov 26, 2024
Method for controlling hollow fiber nanofiltration membrane system with controllable power consumption
GREENTECH ENV CO LTD0 citations46