![\"What](\"https:\/\/www.hosonwater.com\/wp-content\/uploads\/2026\/08\/What-Should-a-Modular-Potable-Water-Plant-Specify.jpg\")
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A modular plant should be purchased from a verified process basis, not from a container size or headline flow alone. A modular potable water plant specification must define feedwater variation, product-water limits, membrane material, pressure limits, disinfection, controls, factory testing, site interfaces, and commercial scope. This turns modular construction into a specification tied to measurable water-quality and performance requirements rather than deployment speed alone.<\/p>\n
Start a \u6a21\u5757\u5316\u996e\u7528\u6c34\u5382<\/u><\/strong><\/a>\u00a0specification with the treatment duty. One feedwater sample is not enough: include seasonal analyses, hourly and daily demand, peak factors, storage strategy, local limits, and operating hours. Turbid or algae-bearing surface water calls for a different pretreatment basis than stable groundwater. If the problem is dissolved salt, particle removal may need to be followed by reverse osmosis (RO).<\/p>\n Treat compliance as an acceptance test, not a footnote. Record the regulator, sampling method, and standard. The World Health Organization’s 2026 guidelines can frame risk, but country permits govern. Ask for product-level evidence for wetted components where required; a company quality credential answers a different question.<\/p>\n Think of an ultrafiltration membrane as a gate for suspended solids, colloids, and many microorganisms, not as a salt-removal step. HOSONWATER’s LH pressure-UF family uses a PVC alloy membrane with a 0.01 \u03bcm nominal pore size. Its published maximum limits are 300 kPa inlet pressure, 120 kPa TMP, and 250 kPa backwash pressure. The published data specifies a chemical-cleaning pH range of 1\u201314 and a temperature range of 0\u201340 \u00b0C. The allowable continuous operating pH range should be confirmed separately with the membrane manufacturer.<\/p>\n The comparable LW pressure-UF family uses a polyvinylidene fluoride (PVDF) membrane with a 0.02 \u03bcm nominal pore size. The published maximum limits remain 300 kPa inlet pressure, 120 kPa TMP, and 250 kPa backwash pressure, while the published data lists a pH tolerance of 1-13 and a temperature range of 0-40 \u00b0C. Under their stated conditions, both families list product water turbidity below 0.1 NTU and SDI\u2081\u2080 below 3. Those are model references, not a blanket plant guarantee.<\/p>\n The useful question is not which polymer wins in every project; none does. LH pairs the smaller nominal pore size with a 50-200 L\/(m\u00b2\u00b7h) design filtration flux range. LW lists 40-200 L\/(m2.h), with 56 m2 and 77 m2 module examples. Size the modular water purification system only after confirming the validated flux, fouling allowance, backwash frequency, cleaning chemistry, train redundancy, and replacement access.<\/p>\n Chemical-cleaning pH and continuous operating pH should be specified separately. For the LH membrane, pH 1\u201314 refers to the published chemical-cleaning tolerance and should not be treated as a continuous operating range. The allowable continuous operating pH, together with applicable temperature and exposure-time limits, should be confirmed by the membrane manufacturer.<\/p>\nProcurement data sheet essentials<\/b><\/strong><\/h3>\n
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Compare UF Membrane Materials and Operating Windows<\/b><\/strong><\/h2>\n
PVC Alloy vs. PVDF: Key Selection Factors<\/b><\/strong><\/h3>\n
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\n \u89c4\u683c<\/b><\/strong><\/td>\n LH pressure UF<\/b><\/strong><\/td>\n LW pressure UF<\/b><\/strong><\/td>\n<\/tr>\n \n Membrane material<\/td>\n PVC alloy<\/td>\n \u805a\u504f\u4e8c\u6c1f\u4e59\u70ef<\/td>\n<\/tr>\n \n Nominal pore size<\/td>\n 0.01\u5fae\u7c73<\/td>\n 0.02\u5fae\u7c73<\/td>\n<\/tr>\n \n Design filtration flux<\/td>\n 50\u2013200 L\/(m\u00b2\u00b7h)<\/td>\n 40\u2013200 L\/(m\u00b2\u00b7h)<\/td>\n<\/tr>\n \n Chemical cleaning pH<\/td>\n 1\u201314<\/td>\n To be confirmed<\/td>\n<\/tr>\n \n Continuous operating pH<\/td>\n To be confirmed by membrane manufacturer<\/td>\n 1\u201313<\/td>\n<\/tr>\n \n Temperature<\/td>\n 0\u201340\u00b0C<\/td>\n 0\u201340\u00b0C<\/td>\n<\/tr>\n \n Pressure limits<\/td>\n 300 \/ 120 \/ 250 kPa<\/td>\n 300 \/ 120 \/ 250 kPa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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