12 月 2, 2020 隆昌化工

海水淡化的发展始于 20 世纪 60 年代。经过几十年的发展,海水淡化技术已经相对成熟。其中,蒸馏法和膜法已成为主流技术。目前,蒸馏法在国际上仍占据整个海水淡化市场的主导地位,但其发展速度落后于反渗透法。蒸馏法是指利用热能进行海水淡化的方法,包括多级闪蒸(MSF)、多效蒸发(MED)、压力蒸馏(VC)等。膜法主要是利用膜的选择透过性来分离盐水,达到海水淡化的目的,主要包括反渗透(RO)和电渗析(ED)。海水淡化的工业运行成本一般高于常规水资源开发利用成本。海水淡化的成本包括能源成本、试剂成本、设备成本、管理费用等。未来,随着海水淡化在人类生产和生活用水中所占比例的逐步提高,海水淡化领域对水处理剂的需求将不断增加。

Quick answer: A practical additive decision starts with the exact defect: foam, poor wetting, craters, haze, or instability. The best product is usually the one that solves that defect with the safest compatibility window.

对于膜法而言,在海水淡化操作过程中,由于海水温度、pH 值、离子浓度等的变化,海水中的钙镁离子可能会生成碳酸盐、酸性盐、氢氧化物等沉淀物,这些沉淀物会堵塞膜孔,降低膜的。因此,有必要在水中添加阻垢剂、洗涤剂、絮凝剂、阻垢剂和分散剂,以减少水垢沉积对反渗透膜的影响。蒸馏法容易产生水垢,降低蒸发效率。可通过对海水进行预处理来减少影响。在原水中加入聚酸盐、有机酸、膦酸聚羧酸等软化水质,并对钙、镁离子等金属离子进行螯合,使其不易沉淀,防止水垢的形成。

二氧化氯药片 是本公司的优势产品,用于各种场合的生活、饮用水和自来水的消毒。医疗、卫生和临床器械的消毒、杀菌、除臭和防霉处理。再生水回用中的杀菌和除臭处理。

反渗透海水淡化利用高压将淡水通过反渗透膜分离出来,剩余部分会形成含盐量较高的浓水,难免会结垢起泡,影响设备的正常运行。运行和使用寿命。这就需要在水中加入相应的水处理药剂进行处理,防止结垢,消除细菌,从而保证水质,延长设备的使用寿命。

海水淡化专用药剂的投加方法有明确的规定和严格的操作规范。普通的水处理剂不能满足海水淡化设备的正常运行,海水淡化设备专用药剂也没有按照规定的比例使用。设备运行一段时间后,会出现水质不达标等后果。

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隆昌化工专业销售阻垢剂、洗涤剂、絮凝剂、阻垢剂和分散剂。我们通常会在 24 小时内与您联系。您也可以给我发电子邮件 info@longchangchemical.com 请在工作时间(UTC+8 周一至周六,上午 8:30 至下午 6:00)或使用网站即时聊天工具获得及时回复。

本文由隆昌化工研发部撰写。如需复制和转载,请注明出处

A practical selection checklist for wetting, leveling, and defoaming additives

Additive selection is usually most effective when the team defines the defect first and then screens compatibility, dosage range, and process stage. That is often much more reliable than choosing only by chemistry family or by a single dramatic lab result.

  • Start from the defect, not the additive name: wetting loss, crater, microfoam, and instability often need different solutions even inside the same formula.
  • Check compatibility at the intended dosage: the strongest additive can still be the wrong commercial choice if it narrows the process window too much.
  • Review the stage of use: some products are most useful during grind, while others matter more during let-down, filling, or final application.
  • Balance cure or film quality with defect control: the right additive fixes the problem without sacrificing adhesion, gloss, or appearance.

Recommended product references

  • CHLUMIAF 094: A balanced defoamer reference for waterborne coatings and many general foam-control screens.
  • CHLUMIAF 3062: Useful when printing-ink and UV-ink compatibility matter in the defoaming screen.
  • CHLUMIAF 3037: A stronger process-defoaming option when persistent foam survives harsher conditions.
  • CHLUMIWE 3280: A strong wetting-agent reference for inks, coatings, and difficult substrate wetting.

FAQ for buyers and formulators

Why does an additive that looks powerful in a beaker sometimes fail in production?
Because shear, temperature, substrate, and the full formula can all change the way the additive performs under real process conditions.

Should the most aggressive additive always be preferred?
Not usually. The best additive is the one that solves the real defect while preserving the broadest safe operating window.

评论 (1)

  1. Marji Orran Teresa

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  2. Vernita

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