Water Treatment Filter Core Seawater Desalination Anti-Pollution Membrane

Product Description

Product Description

Dow FILMTECTM membrane Composite structure Dow membrane is a composite structure, it is composed of three layers:
1.Polyester material reinforced non-woven fabric, about 120*8*6M thick;
2.Polysulfone material porous intermediate support layer, about 40*8*6M thick;
3.The polyamide material is a thin separation layer, about 0.2*8*6M thick.Each layer is individually optimized for design and fabrication according to its functional requirements.
4.The main structural strength of the composite film is provided by the non-woven fabric, which has a hard, smooth surface without loose fibers.
5.The reason for designing the porous intermediate support structure is that when the thin separation layer is directly compounded on the non-woven fabric, the surface is too irregular and the pores are too large, so it is necessary to pre-coat the non-woven fabric with a high layer of permeable microporous polysulfone as the support layer, and its pore size is about 150 anglae.
6.The thin separation layer is the functional layer that truly has the separation function in the reverse osmosis and nanofiltration process. Compared with any other brand products, Dow FILMTECTM diaphragm has high crosslinking degree, thicker functional separation layer, and more uniform thickness, and no pinholes.
Its high crosslinking properties determine its high physical strength and resistance to chemical biodegradation.

 

Product Parameters

Partial FILMTEC^TM Membrane Performance

	SW30HR	BW30	XLE	NF270
Inlet water pressure (bar)                                 (psi)	25 365	10 145	5 73	3.5 51
Desalination rate (%)    Sodium chloride NaCl    Calcium chloride CaCl2    Magnesium sulfate MgSO	99.7 99.8 99.9	99.4 99.4 99.7	98.6 98.8 99.2	50 80 99.3
Testing conditions:	30Um3h (18 gfd), 2,000 mg/L solute concentration, 25°C, pH -8, 10% recovery, 40-inch long membrane elements

The general rule is that the higher the water flux of the membrane, the higher the salt permeability, and the salt permeability decreases with increase of the following factors:
1. Degree of dissociation: Weak acids, such as lactic acid, have a higher degree of dissociation at high, so the removal rate is also higher.
2. Ionic charge: The higher the ionic charge, the higher the removal rate, and divalent ions a higher removal rate than monovalent ions.
3. Molecular weight: The higher the molecular weight, the higher the removal rate.
4. Non-p: The lower the polarity, the higher the removal rate.

installation steps

Detailed Photos

Company Profile

Hengrong Environment, a distinguished authority in the fabrication of stainless steel and carbon steel water treatment equipment, is a beacon of innovation and craftsmanship. With unparalleled technical prowess and state-of-the-art production capabilities, Hengrong stands as a leader in the industry, far surpassing competitors with its advanced technology and expertise.

Our diverse product line includes an array of precision filters, sand carbon filters, and softening tanks, alongside RO membrane shells, aseptic water tanks, and mixing beds. We also offer ion exchangers, ozone mixing towers, iron and manganese filters, ultraviolet sterilizers, flow-stabilizing tanks, as well as cutting-edge reverse osmosis and nanofiltration pure water equipment, not to mention our integrated water purification and sewage treatment systems.

As a trailblazer in environmental protection within China, Hengrong takes pride in being a high-tech enterprise specializing in water treatment equipment and accessories. Boasting a complete suite of top-tier production apparatus and employing the nation's leading argon arc welding technology, our team of expert technicians ensures unparalleled product quality and service excellence. We engage in a wide spectrum of water projects, ranging from domestic drinking water and pharmaceutical ultra-pure water to reclaimed water reuse and sewage treatment systems. Our comprehensive offerings include investment, construction, operation management, and bespoke equipment design and manufacturing.

With extensive expertise in the investment, operation, and management of expansive direct drinking water systems, Hengrong Water Treatment Co. supports various stakeholders such as governments, developers, and property owners in establishing effective operational management systems and building management teams. We provide enduring technical service support, heralding a future of continued growth and innovation. Guided by our commitment to 'Four First-Class': quality, service, technology, and reputation, we strive to forge a clean and beautiful life through water treatment. Our relentless spirit of perseverance and thriving development drives us to serve the community with passion and dedication.