{"id":3591,"date":"2026-09-04T05:09:11","date_gmt":"2026-09-04T05:09:11","guid":{"rendered":"https:\/\/lowayequipment.com\/engineering\/technology-selection\/"},"modified":"2026-09-04T05:09:14","modified_gmt":"2026-09-04T05:09:14","slug":"technology-selection","status":"publish","type":"page","link":"https:\/\/lowayequipment.com\/vi\/engineering\/technology-selection\/","title":{"rendered":"How to Choose Sludge Dewatering Technology"},"content":{"rendered":"<p><script>\/* eng page flag: lets CSS hide the theme page-title *\/\ndocument.body.classList.add('lw-v7');<\/script><\/p>\n<div class=\"lw-home lw-eng\">\n<p>  <!-- ============ TS-HERO ============ --><\/p>\n<section class=\"lw-eng-hero\">\n<div class=\"lw-container\">\n<p class=\"lw-eng-crumb\"><a href=\"\/vi\/engineering\/\">Engineering Resources<\/a><span class=\"sep\">\/<\/span>Technology Selection Guide<\/p>\n<p class=\"lw-kicker\" style=\"display:block\">Engineering resources \u00b7 technology comparison<\/p>\n<h1>Choosing the Right Dewatering Technology<\/h1>\n<p class=\"lw-eng-hero-sub\">Five machines solve five different problems. Compare filter presses, belt filter presses, screw presses, rotary drum filters and mechanical screening side by side \u2014 then use a <b>three-question shortcut<\/b> to shortlist the technology for your sludge.<\/p>\n<div class=\"lw-eng-hero-ctas\">\n        <a class=\"lw-btn lw-btn--light\" href=\"\/vi\/contact-us\/\">Talk to an Engineer<svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\/><polyline points=\"12 5 19 12 12 19\"\/><\/svg><\/a><br \/>\n        <a class=\"lw-btn lw-btn--ghost-on-dark\" href=\"#compare\">Jump to the Comparison<\/a>\n      <\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TS-1 COMPARISON TABLE ============ --><\/p>\n<section class=\"lw-sec\" id=\"compare\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker\" style=\"display:block\">The comparison<\/p>\n<h2 style=\"margin-bottom:14px\">Five Loway Technologies, Side by Side<\/h2>\n<p class=\"lw-lead\" style=\"margin:0 auto 26px\">Three machines do the dewatering; two protect and prepare the flow upstream. Values below are typical for municipal and industrial biological sludge \u2014 your feed decides the real numbers.<\/p>\n<div class=\"lw-eng-heroshot\">\n<div class=\"lw-eng-heroshot-head\">\n<p class=\"lw-kicker\">In production at customer sites<\/p>\n<p>          <span class=\"lw-eng-heroshot-cap\">Every machine in the table below is engineered, built and shop-tested at the Loway factory \u2014 then installed and commissioned at customer sites worldwide.<\/span>\n        <\/div>\n<div class=\"lw-eng-heroshot-grid\">\n<figure>\n            <img decoding=\"async\" loading=\"lazy\" alt=\"High-pressure belt filter press installed in a dairy waste treatment plant\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/12\/Loway-sets-of-belt-filter-pressed-for-dairy-farms-advanced-high-pressure-dewatering-technology-1024x772.png\"><figcaption>\n              <span class=\"lw-eng-heroshot-tech\">Belt Filter Press<\/span><br \/>\n              <span class=\"lw-eng-heroshot-app\">Dairy farm &amp; cooperative<\/span><br \/>\n            <\/figcaption><\/figure>\n<figure>\n            <img decoding=\"async\" loading=\"lazy\" alt=\"Dry filter cake from coal mining dewatering held in a hand\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/industrial-application-of-filter-press-for-coal-mining-768x1024.png\"><figcaption>\n              <span class=\"lw-eng-heroshot-tech\">Filter Press<\/span><br \/>\n              <span class=\"lw-eng-heroshot-app\">Coal mining \u2014 dry cake<\/span><br \/>\n            <\/figcaption><\/figure>\n<figure>\n            <img decoding=\"async\" loading=\"lazy\" alt=\"Membrane filter press plates after a dewatering cycle\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/03\/project-11-768x1024.png\"><figcaption>\n              <span class=\"lw-eng-heroshot-tech\">Membrane Filter Press<\/span><br \/>\n              <span class=\"lw-eng-heroshot-app\">Sludge dewatering<\/span><br \/>\n            <\/figcaption><\/figure>\n<figure>\n            <img decoding=\"async\" loading=\"lazy\" alt=\"Screw press installation for wastewater treatment with sludge discharge pile\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/12\/Loway-screw-press-for-wastewater-treatment-high-efficiency-solid-liquid-solution-1024x856.png\"><figcaption>\n              <span class=\"lw-eng-heroshot-tech\">Screw Press<\/span><br \/>\n              <span class=\"lw-eng-heroshot-app\">Wastewater treatment<\/span><br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-eng-tblwrap\">\n<table class=\"lw-eng-tbl\">\n<thead>\n<tr>\n<th>Compare<\/th>\n<th><a href=\"\/vi\/filter-presses\/\">Filter Press<\/a><span class=\"lw-eng-tbl-role\">Pressure filtration, batch<\/span><\/th>\n<th><a href=\"\/vi\/belt-filter-press\/\">Belt Filter Press<\/a><span class=\"lw-eng-tbl-role\">Gravity + shear, continuous<\/span><\/th>\n<th><a href=\"\/vi\/dewatering-screw-press\/\">Screw Press<\/a><span class=\"lw-eng-tbl-role\">Screw compression, continuous<\/span><\/th>\n<th><a href=\"\/vi\/rotary-drum-filter\/\">Rotary Drum Filter<\/a><span class=\"lw-eng-tbl-role\">Fine screening \/ thickening<\/span><\/th>\n<th><a href=\"\/vi\/mechanical-screening-equipment\/\">Mechanical Screening<\/a><span class=\"lw-eng-tbl-role\">Coarse-solids removal<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>How it separates<\/td>\n<td>Slurry is pumped into chambers between filter plates; pressure \u2014 plus optional <b>membrane squeeze<\/b> \u2014 forms a dry cake.<\/td>\n<td>Conditioned sludge is sandwiched between two moving belts and dewatered under gravity, wedge and roller pressure.<\/td>\n<td>Sludge is conveyed through a narrowing screw inside a fixed screen basket; the volume reduction squeezes water out.<\/td>\n<td>Water passes through a rotating fine screen; suspended solids are retained, scraped off and thickened for the next step.<\/td>\n<td>Bar screens, drum screens and grinders remove rags, hair, grit and coarse solids <b>before<\/b> pumps and presses.<\/td>\n<\/tr>\n<tr>\n<td>Typical feed solids<\/td>\n<td>1\u20138% \u2014 thinner feeds can be conditioned or pre-thickened first<\/td>\n<td>1.5\u20135%<\/td>\n<td>0.5\u20135% \u2014 handles thin, organic sludge well<\/td>\n<td>&lt;1\u20133% suspended solids (fines)<\/td>\n<td>Any stream carrying rags or coarse solids<\/td>\n<\/tr>\n<tr>\n<td>Typical cake dryness<\/td>\n<td><b>35\u201360%+<\/b> \u2014 membrane squeeze and cake-washing options<\/td>\n<td>18\u201330%<\/td>\n<td>20\u201330%<\/td>\n<td>\u2014 discharges thickened solids and clean filtrate<\/td>\n<td>\u2014 removes coarse screenings, no cake produced<\/td>\n<\/tr>\n<tr>\n<td>Operation mode<\/td>\n<td>Batch cycles \u2014 automatic plate movement available<\/td>\n<td>Continuous, high-throughput<\/td>\n<td>Continuous, low-speed, low-shear<\/td>\n<td>Continuous, self-cleaning<\/td>\n<td>Continuous, automated raking<\/td>\n<\/tr>\n<tr>\n<td>Polymer demand<\/td>\n<td>Medium\u2013high conditioning typical<\/td>\n<td>Higher \u2014 flocculant needed for capture on the belt<\/td>\n<td>Low\u2013medium \u2014 low shear suits floc-sensitive sludge<\/td>\n<td>Low \/ none<\/td>\n<td>None<\/td>\n<\/tr>\n<tr>\n<td>Energy &amp; wash water<\/td>\n<td>Hydraulic duty, intermittent<\/td>\n<td>Continuous wash water required<\/td>\n<td>Low energy, little to no wash water<\/td>\n<td>Low energy, low wash<\/td>\n<td>Low energy<\/td>\n<\/tr>\n<tr>\n<td>Footprint<\/td>\n<td>Largest \u2014 plate handling and overhead space<\/td>\n<td>Large \u2014 long machine plus wash system<\/td>\n<td>Compact and enclosed<\/td>\n<td>Compact<\/td>\n<td>In-channel or small skid<\/td>\n<\/tr>\n<tr class=\"lw-eng-tbl-best\">\n<td>Best fit<\/td>\n<td>Hard-to-dewater or high-value sludge; driest cake for disposal or incineration<\/td>\n<td>Continuous large flows where a mid-dry cake and a wash-water routine are acceptable<\/td>\n<td>Thin municipal or organic sludge; low energy, low polymer, small footprint, less attendance<\/td>\n<td>Fine-solids removal, polishing or thickening ahead of a press<\/td>\n<td>First line of defence at the plant inlet or before any dewatering machine<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p class=\"lw-eng-tbl-note\">Typical ranges for municipal \/ industrial biological sludge; indicative only. Performance depends on feed solids, particle size and conditioning \u2014 confirm with a bench test on your sample.<\/p>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TS-2 THREE-QUESTION SHORTCUT ============ --><\/p>\n<section class=\"lw-sec lw-sec--alt\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker lw-center\" style=\"display:block\">The 3-question shortcut<\/p>\n<h2 class=\"lw-center\">Three Questions That Pick the Technology<\/h2>\n<p class=\"lw-lead lw-center\">Answer honestly and the list narrows to one or two machines \u2014 that is the shortlist your engineer should quote on.<\/p>\n<div class=\"lw-eng-flow\">\n<div class=\"lw-eng-q\">\n<div class=\"lw-eng-q-num\">1<\/div>\n<div class=\"lw-eng-q-body\">\n<h3>Is there trash in the flow?<\/h3>\n<p>Rags, hair, plastics, grit or particles above roughly 2\u20133&nbsp;mm will clog pumps, belts and press feed lines.<\/p>\n<div class=\"lw-eng-q-ans\">\n<div><b><em>Yes<\/em> \u2014 protect the line first<\/b><span>Start with mechanical screening or a grinder upstream. You will still need a dewatering machine afterwards.<\/span><\/div>\n<div><b><em>No<\/em> \u2014 move to Question 2<\/b><span>Clean, consistent feed lets you compare the three dewatering machines directly.<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-eng-q\">\n<div class=\"lw-eng-q-num\">2<\/div>\n<div class=\"lw-eng-q-body\">\n<h3>Dry cake to dispose \u2014 or clean water to reuse?<\/h3>\n<p>If the goal is a dry, stackable cake for hauling or incineration, compare dewatering machines. If the goal is clear filtrate or recovered solids, look upstream first.<\/p>\n<div class=\"lw-eng-q-ans\">\n<div><b><em>Dry cake<\/em> \u2014 compare the presses<\/b><span>Filter press reaches the driest cake; belt and screw press run continuously at lower dryness.<\/span><\/div>\n<div><b><em>Clean water \/ recovery<\/em> \u2014 look upstream<\/b><span>A rotary drum filter or clarifier-style step may solve it without a press at all.<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-eng-q\">\n<div class=\"lw-eng-q-num\">3<\/div>\n<div class=\"lw-eng-q-body\">\n<h3>Batch or continuous \u2014 and what does your operation allow?<\/h3>\n<p>Flow pattern decides the machine class: batch duty suits pressure filtration; steady continuous flow suits belt or screw presses. Then weigh polymer, wash water, space and attendance.<\/p>\n<div class=\"lw-eng-q-ans\">\n<div><b><em>Batch, max dryness<\/em> \u2192 Filter Press<\/b><span>Best when disposal cost rewards every point of cake dryness.<\/span><\/div>\n<div><b><em>Continuous, high flow<\/em> \u2192 Belt Filter Press<\/b><span>Best when throughput dominates and wash water is available.<\/span><\/div>\n<div><b><em>Continuous, low-cost duty<\/em> \u2192 Screw Press<\/b><span>Best for thin or organic sludge with limited power, water and space.<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TS-3 SCENARIO \u2192 MACHINE CARDS ============ --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker lw-center\" style=\"display:block\">At a glance<\/p>\n<h2 class=\"lw-center\">Your Situation \u2192 Your Machine<\/h2>\n<div class=\"lw-eng-picks\">\n<div class=\"lw-eng-pick\"><span class=\"lw-eng-pick-when\">Driest cake required<\/span><span class=\"lw-eng-pick-tech\">Filter Press<\/span><\/p>\n<p>Hard-to-dewater or high-value sludge, batch duty, disposal costs that reward dryness.<\/p>\n<p><a href=\"\/vi\/filter-presses\/\">Filter Press range \u2192<\/a><\/div>\n<div class=\"lw-eng-pick\"><span class=\"lw-eng-pick-when\">Continuous &amp; large flow<\/span><span class=\"lw-eng-pick-tech\">Belt Filter Press<\/span><\/p>\n<p>Steady high throughput where a mid-dry cake and a wash-water routine are acceptable.<\/p>\n<p><a href=\"\/vi\/belt-filter-press\/\">Belt Filter Press range \u2192<\/a><\/div>\n<div class=\"lw-eng-pick\"><span class=\"lw-eng-pick-when\">Thin \/ organic sludge<\/span><span class=\"lw-eng-pick-tech\">Screw Press<\/span><\/p>\n<p>Low energy and polymer, compact footprint, less attendance \u2014 a good fit for municipal and food sludge.<\/p>\n<p><a href=\"\/vi\/dewatering-screw-press\/\">Screw Press range \u2192<\/a><\/div>\n<div class=\"lw-eng-pick\"><span class=\"lw-eng-pick-when\">Fine solids &amp; clarity<\/span><span class=\"lw-eng-pick-tech\">Rotary Drum Filter<\/span><\/p>\n<p>Fine-suspended-solids removal, polishing or thickening before the press stage.<\/p>\n<p><a href=\"\/vi\/rotary-drum-filter\/\">Rotary Drum Filter \u2192<\/a><\/div>\n<div class=\"lw-eng-pick\"><span class=\"lw-eng-pick-when\">Rags &amp; coarse solids<\/span><span class=\"lw-eng-pick-tech\">Mechanical Screening<\/span><\/p>\n<p>Protection at the inlet or before any machine \u2014 screening and grinding keep the line running.<\/p>\n<p><a href=\"\/vi\/mechanical-screening-equipment\/\">Screening range \u2192<\/a><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TS-4 REAL INSTALLATIONS \u2014 case proof (linked from homepage) ============ --><\/p>\n<section class=\"lw-sec lw-sec--alt\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker lw-center\" style=\"display:block\">Real installations<\/p>\n<h2 class=\"lw-center\">Four Machines Running Today<\/h2>\n<p class=\"lw-lead lw-center\" style=\"max-width:800px\">A selection table earns trust in the field. These Loway installations are in production now \u2014 each case covers the duty, the machine and the commissioning.<\/p>\n<div class=\"lw-eng-proof\">\n<article class=\"lw-eng-proof-card\">\n          <span class=\"lw-eng-proof-meta\"><span class=\"lw-eng-proof-tag\">Beer production<\/span><span class=\"lw-eng-proof-tech\">Membrane filter press<\/span><\/span><\/p>\n<h3>Fully Automatic Membrane Filter Press in Beer Production<\/h3>\n<p>Membrane pressure filtration applied on a brewery&#8217;s production duty \u2014 machine configuration, automation and commissioning in the full case study.<\/p>\n<p>          <a class=\"lw-eng-proof-go\" href=\"https:\/\/lowayequipment.com\/vi\/blogs\/fully-automatic-membrane-filter-press-in-beer-production-case\/\">Read the beer case \u2192<\/a><br \/>\n        <\/article>\n<article class=\"lw-eng-proof-card\">\n          <span class=\"lw-eng-proof-meta\"><span class=\"lw-eng-proof-tag\">Pesticide intermediates<\/span><span class=\"lw-eng-proof-tech\">PP plate-and-frame<\/span><\/span><\/p>\n<h3>Polypropylene Plate-and-Frame Filter Press for Acidic Pesticide Intermediates<\/h3>\n<p>Corrosion-resistant PP plates chosen for acidic process solutions \u2014 material selection and filtration duty explained in the case.<\/p>\n<p>          <a class=\"lw-eng-proof-go\" href=\"https:\/\/lowayequipment.com\/vi\/polypropylene-plate-and-frame-filter-press-high-efficiency-filtration-in-acidic-pesticide-intermediate-solutions\/\">Read the pesticide case \u2192<\/a><br \/>\n        <\/article>\n<article class=\"lw-eng-proof-card\">\n          <span class=\"lw-eng-proof-meta\"><span class=\"lw-eng-proof-tag\">Construction slurry<\/span><span class=\"lw-eng-proof-tech\">Chamber filter press<\/span><\/span><\/p>\n<h3>Chamber Filter Press for Construction Slurry Treatment<\/h3>\n<p>High-volume construction slurry dewatered in batch cycles \u2014 how the chamber press was sized and commissioned for the site.<\/p>\n<p>          <a class=\"lw-eng-proof-go\" href=\"https:\/\/lowayequipment.com\/vi\/chamber-filter-press-for-construction-slurry-treatment\/\">Read the slurry case \u2192<\/a><br \/>\n        <\/article>\n<article class=\"lw-eng-proof-card\">\n          <span class=\"lw-eng-proof-meta\"><span class=\"lw-eng-proof-tag\">Dairy farms &amp; cooperatives<\/span><span class=\"lw-eng-proof-tech\">High-pressure belt press<\/span><\/span><\/p>\n<h3>High-Pressure Belt Filter Press for Dairy Farms<\/h3>\n<p>Continuous belt filtration helping dairy farms turn waste into a resource \u2014 duty, installation and operating experience.<\/p>\n<p>          <a class=\"lw-eng-proof-go\" href=\"https:\/\/lowayequipment.com\/vi\/loway-high-pressure-belt-filter-press-helps-dairy-farms-and-cooperatives-turn-waste-into-profit\/\">Read the dairy case \u2192<\/a><br \/>\n        <\/article>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TS-5 MEET THE MACHINES (5 image cards) ============ --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker lw-center\" style=\"display:block\">Meet the machines<\/p>\n<h2 class=\"lw-center\">The Full Loway Separation Line<\/h2>\n<p class=\"lw-lead lw-center\" style=\"max-width:820px\">One manufacturer, five machine families \u2014 engineered, built and shop-tested under one roof, then commissioned at your site.<\/p>\n<div class=\"lw-tech\">\n        <a href=\"\/vi\/filter-presses\/\"><img decoding=\"async\" class=\"lw-tech-img\" loading=\"lazy\" alt=\"Loway filter press \u2014 batch dewatering with high cake dryness\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/Loway-equipment-membrane-filter-press-system.png\"><span class=\"lw-tech-body\"><span class=\"lw-tech-h3\">Filter Presses<\/span><span class=\"lw-tech-desc\">High dry cake quality for demanding sludge.<\/span><span class=\"lw-tech-more\">View range \u2192<\/span><\/span><\/a><br \/>\n        <a href=\"\/vi\/belt-filter-press\/\"><img decoding=\"async\" class=\"lw-tech-img\" loading=\"lazy\" alt=\"Loway high pressure belt filter press \u2014 continuous dewatering\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/loway-high-press-belt-filter-press-equipment-1024x724.png\"><span class=\"lw-tech-body\"><span class=\"lw-tech-h3\">Belt Filter Presses<\/span><span class=\"lw-tech-desc\">Continuous dewatering at scale.<\/span><span class=\"lw-tech-more\">View range \u2192<\/span><\/span><\/a><br \/>\n        <a href=\"\/vi\/dewatering-screw-press\/\"><img decoding=\"async\" class=\"lw-tech-img\" loading=\"lazy\" alt=\"Loway screw press \u2014 continuous dewatering of organic sludge\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/loway-screw-press-PLC-automated-1024x682.png\"><span class=\"lw-tech-body\"><span class=\"lw-tech-h3\">Screw Presses<\/span><span class=\"lw-tech-desc\">Low-maintenance continuous dewatering.<\/span><span class=\"lw-tech-more\">View range \u2192<\/span><\/span><\/a><br \/>\n        <a href=\"\/vi\/rotary-drum-filter\/\"><img decoding=\"async\" class=\"lw-tech-img\" loading=\"lazy\" alt=\"Internal rotary drum fine screen by Loway Equipment\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2026\/07\/Internal-Rotary-Drum-Fine-Screen-Loway-Equipment-1.png\"><span class=\"lw-tech-body\"><span class=\"lw-tech-h3\">Rotary Drum Filters<\/span><span class=\"lw-tech-desc\">Fine-solids removal and thickening.<\/span><span class=\"lw-tech-more\">View range \u2192<\/span><\/span><\/a><br \/>\n        <a href=\"\/vi\/mechanical-screening-equipment\/\"><img decoding=\"async\" class=\"lw-tech-img\" loading=\"lazy\" alt=\"Loway bar screen \u2014 mechanical screening for wastewater pre-treatment\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/bar-screen-wastewater-treatment-equipment.png\"><span class=\"lw-tech-body\"><span class=\"lw-tech-h3\">Mechanical Screening<\/span><span class=\"lw-tech-desc\">Rags and coarse-solids protection.<\/span><span class=\"lw-tech-more\">View range \u2192<\/span><\/span><\/a>\n      <\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TS-6 UNDER ONE ROOF \u2014 factory photos ============ --><\/p>\n<section class=\"lw-sec lw-sec--alt\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker lw-center\" style=\"display:block\">Behind the comparison<\/p>\n<h2 class=\"lw-center\">One Factory, Five Machine Families<\/h2>\n<p class=\"lw-lead lw-center\" style=\"max-width:860px\">The machines in the table above are built by the same engineers under one roof \u2014 fabricated, assembled and shop-tested before export packing.<\/p>\n<div class=\"lw-mfg-grid\">\n<figure class=\"lw-mfg-fig\"><img decoding=\"async\" loading=\"lazy\" alt=\"Automatic filter press at the Loway factory\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/01\/loway-factory-filter-press-equipment-automatic-1024x768.png\"><figcaption><b>Filter Presses<\/b><span>membrane and chamber presses built and prepared for export packing.<\/span><\/figcaption><\/figure>\n<figure class=\"lw-mfg-fig\"><img decoding=\"async\" loading=\"lazy\" alt=\"Belt filter press in the Loway factory\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/loway-belt-filter-press-equipment-in-factory.png\"><figcaption><b>Belt Filter Presses<\/b><span>continuous belt lines fabricated and skid-mounted in-house.<\/span><\/figcaption><\/figure>\n<figure class=\"lw-mfg-fig\"><img decoding=\"async\" loading=\"lazy\" alt=\"Screw press dewatering equipment at the Loway factory\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/loway-factory-screw-press-dewatering-equipment-1024x1018.png\"><figcaption><b>Screw Presses<\/b><span>stainless multi-disc units assembled and run-checked on the floor.<\/span><\/figcaption><\/figure>\n<figure class=\"lw-mfg-fig\"><img decoding=\"async\" loading=\"lazy\" alt=\"Rotary drum filter manufactured at the Loway factory\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/09\/Rotary-Drum-Filter-Loway-equipment-factory-manufacturing-768x768.png\"><figcaption><b>Rotary Drum Filters<\/b><span>drum screens and fine screens manufactured in-house to order.<\/span><\/figcaption><\/figure>\n<\/p><\/div>\n<div class=\"lw-mfg-points\">\n<div><b>Fabrication<\/b>frames, plate packs and skids welded, machined and dressed under one roof.<\/div>\n<div><b>Shop-testing<\/b>hydraulic and dry-run checks before any line leaves the floor.<\/div>\n<div><b>Export packing<\/b>wooden cases and seaworthy packing for overseas sites.<\/div>\n<\/div><\/div>\n<\/section>\n<p>  <!-- ============ TS-7 FAQ ============ --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker lw-center\" style=\"display:block\">Selection FAQ<\/p>\n<h2 class=\"lw-center\">Technology Selection Questions, Answered<\/h2>\n<div class=\"lw-faq\" style=\"max-width:860px;margin:0 auto;text-align:left\">\n<details>\n<summary>Which technology produces the driest cake?<\/summary>\n<div class=\"lw-faq-a\">The filter press \u2014 typically 35\u201360% cake dryness, and higher with membrane squeeze and extended pressing. Belt and screw presses normally stay around 18\u201330%. If every point of dryness cuts your disposal bill, the filter press usually wins; if you run a continuous, large flow, weigh that against belt or screw economics.<\/div>\n<\/details>\n<details>\n<summary>Can a screw press handle very thin sludge?<\/summary>\n<div class=\"lw-faq-a\">Yes \u2014 screw presses accept dilute organic sludge from about 0.5% solids, which is why municipal and food plants choose them. A bench test on your sample confirms the feed range, polymer need and expected cake.<\/div>\n<\/details>\n<details>\n<summary>How do I choose between batch and continuous dewatering?<\/summary>\n<div class=\"lw-faq-a\">Look at how the sludge arrives: batch duty (tankers, shift production) suits a filter press; a steady 24-hour stream suits a continuous belt or screw press. Throughput, operator hours and wash-water availability matter as much as the dryness target.<\/div>\n<\/details>\n<details>\n<summary>I have oily or chemical sludge \u2014 will a press block?<\/summary>\n<div class=\"lw-faq-a\">Emulsified oil and fine chemical slurries need conditioning first \u2014 the right polymer, and sometimes pre-treatment. Tell us what is in the feed: we test your sample and recommend a machine that will actually run, not one that looks good in a brochure.<\/div>\n<\/details>\n<details>\n<summary>Do I need a sludge test before buying?<\/summary>\n<div class=\"lw-faq-a\">It is the fastest way to de-risk the purchase. A bench test on a small sample tells you achievable dryness, cycle time and polymer consumption \u2014 the three numbers that decide machine size and operating cost.<\/div>\n<\/details>\n<details>\n<summary>What if I am still not sure?<\/summary>\n<div class=\"lw-faq-a\">Send us your sludge data \u2014 flow, solids content, source and dryness target. A Loway engineer shortlists one or two technologies and explains the reasoning, with no obligation.<\/div>\n<\/details><\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TS-8 CTA BAND ============ --><\/p>\n<section class=\"lw-sec\" style=\"padding-top:0\">\n<div class=\"lw-container\">\n<div class=\"lw-band\">\n<p class=\"lw-kicker\" style=\"display:block\">Still comparing?<\/p>\n<h2>Send Us Your Sludge Data \u2014 Get Two Technologies Shortlisted<\/h2>\n<p class=\"lw-band-sub\">Flow, solids content, disposal target. A Loway engineer replies with a shortlist, the reasoning behind it, and the next step to validate it on your sample.<\/p>\n<div class=\"lw-btn-row\" style=\"margin-top:10px\">\n          <a class=\"lw-btn lw-btn--light\" href=\"\/vi\/contact-us\/\">Talk to an Engineer<svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\/><polyline points=\"12 5 19 12 12 19\"\/><\/svg><\/a><br \/>\n          <a class=\"lw-btn lw-btn--ghost-on-dark\" href=\"\/vi\/engineering\/\">Back to Engineering Resources<\/a>\n        <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Engineering Resources\/Technology Selection Guide Engineering resources \u00b7 technology comparison Choosing the Right Dewatering Technology Five machines solve five different problems. Compare filter presses, belt filter presses, screw presses, rotary drum filters and mechanical screening side by side \u2014 then use a three-question shortcut to shortlist the technology for your sludge. Talk to an Engineer Jump [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":3590,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3591","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Choose Sludge Dewatering Technology - Loway Equipment<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lowayequipment.com\/vi\/engineering\/technology-selection\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Choose Sludge Dewatering Technology - Loway Equipment\" \/>\n<meta property=\"og:description\" content=\"Engineering Resources\/Technology Selection Guide Engineering resources \u00b7 technology comparison Choosing the Right Dewatering Technology Five machines solve five different problems. 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