{"id":5253,"date":"2025-10-07T15:38:09","date_gmt":"2025-10-07T08:38:09","guid":{"rendered":"https:\/\/amco.co.th\/comparing-sand-filter-vs-alfawater\/"},"modified":"2026-07-22T11:11:42","modified_gmt":"2026-07-22T04:11:42","slug":"comparing-sand-filter-vs-alfawater","status":"publish","type":"post","link":"https:\/\/amco.co.th\/en\/comparing-sand-filter-vs-alfawater\/","title":{"rendered":"Sand Filter vs. amco Alfawater: The Filtration Upgrade That Never Stops Your Line"},"content":{"rendered":"\n

Water is one of the most essential inputs in almost every industrial process \u2014 from automotive manufacturing to food production \u2014 so keeping it clean is the cornerstone of plant efficiency. Yet many factories are still running the same\u00a0sand filter<\/strong>\u00a0technology they installed decades ago, quietly paying for it every day in downtime, wasted water, and replacement media. This guide compares two fundamentally different approaches \u2014 the traditional\u00a0sand filter<\/strong>\u00a0and the\u00a0Alfawater automatic self-cleaning screen filter<\/strong>\u00a0\u2014 and shows where the difference lands on your operating costs. If you’re weighing a broader cooling-tower upgrade, start with our\u00a0complete guide to side stream filtration<\/a>.
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Table of contents<\/h3>\n\n\n\n
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  1. How a sand filter works \u2014 and its hidden costs<\/li>\n\n\n\n
  2. The Alfawater leap: self-cleaning screen filtration<\/li>\n\n\n\n
  3. Side-by-side comparison<\/li>\n\n\n\n
  4. Where the difference actually pays back (6 levers)<\/li>\n\n\n\n
  5. Frequently asked questions<\/li>\n<\/ol>\n\n\n\n

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    \"Alfawater<\/figure>\n\n\n\n

    Understanding Sand Filtration: How It Works \u2014 and the Hidden Costs Behind It<\/h2>\n\n\n\n

    A sand filter relies on depth filtration<\/strong>: water seeps slowly through layers of sand and gravel that trap suspended solids along the way. Typically it captures particles down to 20\u201350 microns (nominal rating)<\/strong>; more complex multi-media filters reach around 10\u201315 microns<\/strong>.<\/p>\n\n\n\n

    The weakness is in how it cleans itself. As solids accumulate, the bed must be backwashed<\/strong> \u2014 and during backwash the entire filtration process stops completely<\/strong> while clean water is pumped in reverse to flush the trapped solids to drain. That creates three hidden costs:<\/p>\n\n\n\n