BMBW4040-LP Equivalent Toray TMG20-4040.

LP (low pressure) series of aromatic polyamide compound membrane element developed by Besta membrane has the properties of low-pressure operation, high permeate flow and excellent desalination and is applicable to desalination of brackish water.It is an economical alternative to the TMG20-4040. Besides, it is particularly applicable to fabrication of high-purity water for electronic industry and electric power industry owing to its excellent performance in removing soluble salts, TOC, SiO2, etc.

Being suitable for desalting such water sources as surface water (NaCl ≤10000ppm), underground water, tap water and municipal water, etc., LP series is mainly applicable to treatment of various industrial water such as industrial-purpose pure water, boiler water replenishment in power plants, and can be also applied to such brackish water applications, such as treatment of high-concentration saline waste water and production of beverage-purpose water.

Module                      Active Membrane Area          Average Permeate        Stable rejection         Min rejection

ft2(m2)                                         GPD（m³/d）                    Rate（％）                Rate（％）

BMBW-4040-LP                    85（7.9）                                    2400（9.8）                            99.7                           99.4

Test conditions：

Testing pressure                                                       225 Psi（1.55Mpa）

Testing solution temperature                                 25℃

Concentration of testing solution&                    2000ppm

pH value of testing solution                                  7.0±0.5

Recovery rate of Single element                             15%

Feed spacer：                                                          31mil（0.79mm）

Operation limits & conditions：

Max. Working Pressure                                                                                     600psi（4.14Mpa）

Max. Temperature of Feed water                                                                       45℃

Max. Volume of Feed water                                                                               16gpm（3.6 m3/h）

Max. Feed water SDI15                                                                                             5

Max. Feed water Turbidity                                                                                 1.0NTU

pH Range of Feed water during Continuous Operation                                 2～11

pH Range of Feed water during Chemical Cleaning                                       1～13

Residual Chlorine Concentration of  Feed Water                                             ＜0.1ppm

Max. Pressure Drop of Single Membrane Element                                          15psi（0.1Mpa）

Max. Pressure Drop of Single Pressure Vessel with Six elements                 50psi（0.34Mpa）