Hyperfiltration industrial

The SBP membrane filtration system concentrates contaminants and reduces the volume of contaminated groundwater, surface water, storm water, landfill leachates, and industrial process water. This hyperfiltration system consists of stainless steel tubes coated with a multilayered membrane, which is formed in-place using proprietary chemicals. The membrane filtration system can be used with an SBP bioremediation system or another technology as part of a treatment train. 

Dynamic membranes originated in the research at the Oak Ridge National Laboratory in the 196O s. Development has produced commercial ultrafiltration and hyperfiltration membranes for industrial separation applications. Research continues in several laboratories to improve the selectivity and productivity of the membranes and to tailor them for specific applications. The development of dynamic membranes and current research is reviewed briefly. Research on polyelectrolyte blend membranes is described in detail as a representative method for tailoring dynamic membranes. 

Industrial Application of Ultrafiltration and Hyperfiltration in the Food and Dairy Industries... 

The separations feasible by filtration have expanded enormously over the last generation. The developments this symposium has commemorated, and the individuals it has honored, have been largely responsible. The removal of dissolved solutes or other low-molecular-weight substances from water by hyperfiltration or reverse osmosis, which the Loeb-Sourlrljan membrane made technically and economically feasible, has become an industrial-scale operation. Ultrafiltration of colloids and filtration of coarser materials from liquids have become much more efficient with the use of cross flow of liquid to slow the buildup of flltercake appreciation of the benefits from shear at the Interface has become much more general from the necessity of controlling concentration polarization and fouling in salt filtration. 

Ultrafiltration and Hyperfiltration in the Pulp and Paper Industry for By-Product Recovery and Energy Savings... 

With the increasing fuel prices, it becomes more and more important to find energy efficient concentration methods for industrial effluents. Hyperfiltration (HF).also called reverse osmosis is in several cases the most favorable method. 

The large number of papers necessitated publishing the symposium in two volumes. Volume I describes the desalination and salt-rejecting hyperfiltration membranes. Volume II covers hyper- and ultrafiltration membrane utilization in the following areas food, medicine, pulp, paper, and textile industries, oily waste stream purification, and in the separation of gases, polymers, organic solutes, and biopolymers. 

Many of these uses are very significant since they are described from the point of extensive commercial experience. This is particularly true of the food, medical, and waste treatment fields. For example, cheese whey solids that previously were pollution problems are recovered now at the rate of several hundred tons/day and sold as valuable food. Similarly the recent advances of hemofiltration over hemodialysis are improving the quality of life for thousands of patients who suffer from renal failure. Also pollution abatement by ultra- and hyperfiltration in the pulp, textile, and steel-processing industries is now a commercial reality for certain types of waste streams. 

Hyperfiltration, particularly RO, was the first membrane process to be run on an industrial scale, as early as the 1960s [1,3]. The great breakthroughs here were the invention in the early sixties by Loeb and Sourirajan [4] of asymmetric membranes prepared via phase inversion and the development of membranes prepared via interfacial polymerization [5]. The membranes appHed are densified even more than those for UF and a Hmit is reached membranes may get so dense that the... 

Treatment of contaminated liquids such as water, leachate, filtrate, groimdwater, storm water, surface water and industrial process waste water can be accomplished by several of SBP s technologies. Certain waste streams can be concentrated by the hyperfiltration units the permeate is clean water and the "ctMicentrate" contains the reduced volume of the pollutants. These concentrated contaminants can often be bioremediated, thus minimizing the waste stream. Other liquids may be treated directly, either by biological processes, or in the case of volatiles, air stripping with biotreatment of the pollutants in a gas phase bioreactor, or "biofilter". 

Another popular method which gives a high-quality water is reverse osmosis (RO), often called ultrafiltration or hyperfiltration. Though often considered too expensive for industrial use, RO has found extensive applications in domestic water supplies. The production of highly efficient osmotic membranes has made RO competitive with distillation for the production of salt-free water. RO does not, however, remove volatile organic compounds (VOC) from the water supply. Treatment with granulated activated carbon (GAC) can be very effective for this purpose (see Chap. 16 and Appendix C). 

Staude et al. [23] evaluated the removal of tetraethylammonium perfluo-rooctanesulfonate from rinse solutions of the electrochemical plating industry by hyperfiltration. 

---