ILEC™

F. A. Domino, Elating on Elastics—ILecent Developments, Noyes Data Corp., Park Ridge, N.J., 1979, p. 108. 

Figure 4.20 Dow Water Solutions-FilmTec iLEC ATDs with integral Oring. Courtesy of Dow Water and Process Solutions.

Figure 4.21 Use of strap wrench with iLEC membranes. Courtesy of Crossbow Water Technologies.

A strap wrench is used to hold one iLEC module in place as the other iLEC module is twisted either onto or off of the first module as illustrated in Figure 4.21. 

Figure 4.22 shows the flow characteristics for standard ATDs and the iLEC ATD. The reduced diameter of internal couplers and vessel adapters for the standard ATDs accounts for more than 70 percent of the permeate-tube pressure drop in some systems.26 The interlocking iLEC ATD design eliminates these restrictions, imposing less permeate backpressure, resulting in lower operating pressure requirements. 

Figure 4.22 Flow characteristics through standard ADTs and iLEC ATDs. Courtesy ofDrnv Water and Process Solutions.

Modules should also be removed from pressure vessel in the same direction as the flow. Hence, the first module into the vessel, which is the last one in the series, is the first module out. Figures 6.10 a, b, and c show the removal sequence for a FilmTec iLEC membrane module (see Chapter 4.3.3). 

Figure 6.10 Sequence of module removal for Dow Water and Process Solutions-FilmTec iLEC membrane modules, a) module removal device, b) pulling module out of pressure vessel, c) disconnecting 2 modules. Courtesy of Nalco-Crossbow Water UC.

Ilecently (1933) G. Hertz lias succeeded in separating isotopes by a... 

Tomsic B, Ilec E, Zerjav M, Hladnik A, Simoncic A, Simoncic B. Characterisation and functional properties of antimicrobial bio-barriers formed by natural fibres. Colloids Surf B Biointerfaces 2014 122 72-8. 

Figure4.20 shows the ATDs from a new FilmTec iLEC (Interlocking End Cap) membrane module (iLEC is a trademark of The Dow Chemical Company, Midland, MI). The iLEC modules join ATDs by twisting them together directly rather than relying on interconnector adaptors, the way standard modules are connected together. As shown in the figure, the ATD iLEC end cap has an integral O-ring that cannot be rolled or pinched during installation. Furthermore,...

Elemental sulfur is a yellow-white substance, as shown on the brine seal and on the iLEC interconnecting O-ring seal in Figures 7.1 and 7.2,... 

Figure 7.2 Elemental sulfiu- on iLEC interconnector O-ring seal.

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