pre-filtration for reverse osmosis · produced water oil/water separation achieved at high flux...

Pre-filtration for Reverse Osmosis Improve your RO operation! It is well-known that the performance of a RO system depends on the quality of the pre-filtration. This is due to the following facts: Improved pre-filtration in terms of more efficient removal of dissolved and suspended solids, results in longer operating intervals of the RO system before the need of chemical cleaning. The reduced number of chemical cleaning cycles means prolonged lifetime for the RO membranes and reduced operating costs. Efficient removal of suspended solids, results in reduced fouling of the RO membranes. This reduces concentration polarization which again improves the quality of the RO permeate. An increase of the RO capacity is often seen with improved pre-filtration. Simply better Reduce your construction costs! The pre-filtration unit with SiC membranes is very compact compared to sand filters and other polymer/ceramic membrane units. This is due to the fact that Silicon Carbide (SiC) membranes from nature have a high water flux (one of the reasons to this is the low contact angle between the SiC surface and water). The high capacity per membrane element brings down the footprint of the pre-filtration unit. As a rule of thumb – 10 kg of SiC membrane has the same capacity as 1 ton of sand filter (m3/h). The high capacity per membrane element brings down the total number of membrane pressure vessels, pipes and can fit within a small building volume. Reduce your operating costs! The SiC membranes are efficiently cleaned with a combination of air and water/permeate. The water consumption for back-flushing the SiC membranes is about 1/10 of the volume used for sand filters. This feature adds credits directly to your green profile! High flow capacities are achieved at very low pressures, and thus reducing your energy costs. Cost reductions Lerhoej 10, 2880 Bagsvaerd, Denmark, Telephone: +45 44 98 60 00 Fax: +45 44 98 60 61, CVR/VAT no.: DK 2512 1031, www.cometas.dk Table 1: Pure water flux achieved with CoMem Conduits OD144x865 mm (10.2 m 2 ) at 25 °C

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Pre-filtration

for Reverse

Osmosis

Improve your RO operation! It is well-known that the performance of a RO system depends on the quality of the pre-filtration. This is due to the following facts: Improved pre-filtration in terms of more efficient removal of dissolved and suspended solids, results in longer operating intervals of the RO system before the need of chemical cleaning. The reduced number of chemical cleaning cycles means prolonged lifetime for the RO membranes and reduced operating costs.

Efficient removal of suspended solids, results in reduced fouling of the RO membranes. This

reduces concentration polarization which again improves the quality of the RO permeate. An increase of the RO capacity is often seen with improved pre-filtration.

Sim

ply

bette

Reduce your construction costs! The pre-filtration unit with SiC membranes is very compact compared to sand filters and other polymer/ceramic membrane units. This is due to the fact that Silicon Carbide (SiC) membranes from nature have a high water flux (one of the reasons to this is the low contact angle between the SiC surface and water).

The high capacity per membrane element brings down the footprint of the pre-filtration unit. As a rule of thumb – 10 kg of SiC membrane has the same capacity as 1 ton of sand filter

(m3/h). The high capacity per membrane element brings down the total number of membrane pressure vessels, pipes and can fit within a small building volume.

Reduce your operating costs! The SiC membranes are efficiently cleaned with a combination of air and water/permeate. The water consumption for back-flushing the SiC membranes is about 1/10 of the volume used for sand filters. This feature adds credits directly to your green profile!

High flow capacities are achieved at very low pressures, and thus reducing your energy costs.

Cost r

uctio

Lerhoej 10, 2880 Bagsvaerd, Denmark, Telephone: +45 44 98 60 00

Fax: +45 44 98 60 61, CVR/VAT no.: DK 2512 1031, www.cometas.dk

Table 1: Pure water flux achieved with CoMem Conduits OD144x865 mm (10.2 m2) at 25 °C