HATENBOER-WATER过滤器HDN系列介绍

HDN中和过滤器

为海水淡化装置生产的水的调理选择各种中和过滤器。使用这些过滤器可以改善水的口感，并防止自来水系统的腐蚀。

低pH值水

低pH值的水，例如来自海水淡化厂（包括蒸发器和反渗透水机）的产品水，通常具有腐蚀性且无味。这种所谓的“酸性状态”是由于游离二氧化碳气体（CO2）的存在以及天然矿物质的缺乏。

中和/矿化

为了使这种水中性或略呈碱性，应进行中和或矿化处理。为了确保完全去除CO2，可以通过一床中和过滤介质“EWT化合物”过滤水。在低压过滤过程中，CO2与EWT化合物反应，形成天然的碳酸氢盐和钙（Ca2+）。这两种离子都能减少水的腐蚀性。

EWT化合物

过去，常用大理石中和（矿化）方法，但这种反应速度较慢，难以达到并维持平衡。如今更倾向于使用EWT化合物，因为它反应迅速且完全。其特殊结构使其能快速且均匀地溶解。

EWT化合物是一种颗粒状介质，装在25公斤的袋子中。平均使用量为每70立方米水用1公斤（2磅）。每年可以部分补充几次，以补充在此过程中溶解在水中的材料。在补充时，必须反向冲洗过滤器，以清除灰尘和污染物。此外，还建议偶尔冲洗滤床，以松动滤料。

材料

HDN GRP过滤器由100%复合玻璃纤维防腐材料制成，内壳为聚乙烯，具有防腐蚀性能。

管道

HDN GRP过滤器配备PVC-U管道和手动（三通）球阀，以实现全操作，包括中和过滤器的反冲洗。管道直径取决于过滤器型号。

HDN

neutralising filters

Choose from a wide range of neutralizing filters for the conditioning of water produced by desalination installations. Use these filters for improved taste and prevention of corrosion in your freshwater system.

Low pH

Water with a low pH value, such as product water from desalination plants (both evaporators and reverse osmosis type water makers), is often corrosive and tasteless. This so-called ‘acid condition’ is due to the presence of free carbonic acid gas (CO2) and a lack of natural minerals.

Neutralising / mineralising

To make this water neutral or slightly alkaline, it should be neutralized or mineralized. To ensure complete removal of CO2, the water can be filtered through a bed of neutralizing filter media, named “EWT compound.” In the low-pressure filtration process, the CO2 reacts with the EWT compound to form natural bicarbonates and calcium (Ca2+). Both ions will contribute to less corrosive water.

EWT compound

In the past, it has been common practice to use marble neutralizing (mineralizing), though the reaction is slow and equilibrium is difficult to reach and maintain. EWT compound is now preferred due to its quick and complete action. Its special structure makes it rapidly and uniformly soluble.

EWT compound is a granular medium, packed in 25 kg bags. The average consumption of material is 1 kg (2 lb) on 70 m3 of water. It is sufficient to partially refill a few times per year to replace the material that has been dissolved in the water in due process. Upon refilling, the filter must be flushed by reversing the water flow to remove dust and contamination from the fresh filling material. We would furthermore advise you to occasionally flush the filter to loosen the filter bed.

Material

The HDN GRP filters are made of 100% composite fiberglass corrosion-resistant material with a polyethylene inner shell and are corrosion-resistant.

Piping

The HDN GRP filters are supplied with PVC-U piping and manual (three-way) ball valves for full operation, including backwash of the neutralizing filter. The piping diameter is dependent on the filter model.

HATENBOER-WATER过滤器其他常用型号：

HATENBOER-WATER HDN20 GRP

HATENBOER-WATER Filter NEW + ORIGINAL+ ONE YEAR WARRANTY

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If you have any question for HATENBOER-WATER products, please feel free to dial 0086-21-3100 6702/ send request email to [email protected] / browse our website:www.ize-industries.com.

HATENBOER-WATER过滤器HDN系列HDN20 GRP产品介绍

• HATENBOER-WATER过滤器HDN20 GRP