陶氏納濾膜NF270-40034i電泳漆納濾膜

陶氏納濾膜NF270-400/34i電泳漆納濾膜

陶氏納濾膜NF270-400/34i脫鹽型納濾膜的原理與超濾及反滲透等膜分離過程一樣，也是以壓力差為推動力的膜分離過程，是一個不可逆過程。其分離機(jī)制可以運用電荷模型(空間電荷模型和固定電荷模型)、細(xì)孔模型以及近年來才提出的靜電排斥和立體阻礙模型等來描述。與其他膜分離過程比較，納濾的一個優(yōu)點是能截留透過超濾膜的小分子量的農(nóng)業(yè)生產(chǎn)體系物，又能透析反滲透膜所截留的部分無機(jī)鹽——也就是能使“濃縮”與脫鹽同步進(jìn)行。

陶氏納濾膜NF270-400/34i

陶氏納濾膜NF270-400/34i優(yōu)點

好的農(nóng)業(yè)生產(chǎn)體系物的移去除

部分水保留軟化特性

有高收益高通量的效果

低能耗降低了功耗和成本

長時間好良好的除塵力

The DOW FILMTEC NF270-400/34i element is a high area, high productivity element designed to remove a high percentage of TOC and THM precursors while having a medium to high salt passage and medium hardness passage. It is an ideal element for surface and groundwater applications where good organic removal is desired with partial softening in order to maintain a minimum level of hardness for organoleptic properties and preservation of distribution networks. The high active area membrane combined with low net driving pressure of the membrane allows the removal of these compounds at low operating pressure. It uses a 34 mil feed spacer to lessen the impact of fouling on pressure drop across a vessel and enhance cleaning effectiveness. The iLEC™ interlocking end caps reduce system operating costs and the risk of o-ring leaks that can cause poor water quality.

Advantages:

Good organic (NOM) removal

Partial softening preserves water character

High flux results in high yields

Low energy usage reduces power consumption and costs

Durable with good cleanability for long element life

Thicker feed spacer delivers better tolerance of suspended solids and enables more efficient cleaning of organic material from the element

FILMTEC performance and quality