{"id":1533,"date":"2026-01-10T00:35:07","date_gmt":"2026-01-09T17:35:07","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/inox-cho-xu-ly-va-cap-nuoc-sach-giam-that-thoat-hieu-qua\/"},"modified":"2026-01-10T00:35:07","modified_gmt":"2026-01-09T17:35:07","slug":"inox-cho-xu-ly-va-cap-nuoc-sach-giam-that-thoat-hieu-qua","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/inox-cho-xu-ly-va-cap-nuoc-sach-giam-that-thoat-hieu-qua\/","title":{"rendered":"Inox cho x\u1eed l\u00fd v\u00e0 c\u1ea5p n\u01b0\u1edbc s\u1ea1ch: gi\u1ea3m th\u1ea5t tho\u00e1t hi\u1ec7u qu\u1ea3"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-that-thoat-nuoc-sach-vi-sao-vat-lieu-quyet-dinh\">Th\u1ea5t tho\u00e1t n\u01b0\u1edbc s\u1ea1ch: v\u00ec sao v\u1eadt li\u1ec7u quy\u1ebft \u0111\u1ecbnh<\/a><\/li>\n<li><a href=\"#toc-1-vi-sao-inox-vuot-troi-trong-xu-ly-va-cap-nuoc\">V\u00ec sao inox v\u01b0\u1ee3t tr\u1ed9i trong x\u1eed l\u00fd v\u00e0 c\u1ea5p n\u01b0\u1edbc<\/a><\/li>\n<li><a href=\"#toc-2-ung-dung-cu-the-theo-tung-khau-he-thong\">\u1ee8ng d\u1ee5ng c\u1ee5 th\u1ec3 theo t\u1eebng kh\u00e2u h\u1ec7 th\u1ed1ng<\/a><\/li>\n<li><a href=\"#toc-3-lua-chon-mac-thep-chieu-day-va-tieu-chuan\">L\u1ef1a ch\u1ecdn m\u00e1c th\u00e9p, chi\u1ec1u d\u00e0y v\u00e0 ti\u00eau chu\u1ea9n<\/a><\/li>\n<li><a href=\"#toc-4-thiet-ke-thi-cong-de-chong-ro-ri-va-an-mon\">Thi\u1ebft k\u1ebf \u2013 thi c\u00f4ng \u0111\u1ec3 ch\u1ed1ng r\u00f2 r\u1ec9 v\u00e0 \u0103n m\u00f2n<\/a><\/li>\n<li><a href=\"#toc-5-so-sanh-nhanh-voi-vat-lieu-pho-bien\">So s\u00e1nh nhanh v\u1edbi v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn<\/a><\/li>\n<li><a href=\"#toc-6-bai-hoc-trien-khai-va-vi-du-dien-hinh\">B\u00e0i h\u1ecdc tri\u1ec3n khai v\u00e0 v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh<\/a><\/li>\n<li><a href=\"#toc-7-khuyen-nghi-cho-du-an-tai-viet-nam\">Khuy\u1ebfn ngh\u1ecb cho d\u1ef1 \u00e1n t\u1ea1i Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-8-vi-du-tinh-chi-phi-vong-doi-tom-luoc\">V\u00ed d\u1ee5 t\u00ednh chi ph\u00ed v\u00f2ng \u0111\u1eddi (t\u00f3m l\u01b0\u1ee3c)<\/a><\/li>\n<li><a href=\"#toc-9-bao-tri-va-van-hanh\">B\u1ea3o tr\u00ec v\u00e0 v\u1eadn h\u00e0nh<\/a><\/li>\n<li><a href=\"#toc-10-nguon-tham-khao-tieu-bieu\">Ngu\u1ed3n tham kh\u1ea3o ti\u00eau bi\u1ec3u<\/a><\/li>\n<li><a href=\"#toc-11-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Inox \u0111ang tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u chi\u1ebfn l\u01b0\u1ee3c trong c\u00e1c h\u1ec7 th\u1ed1ng x\u1eed l\u00fd v\u00e0 cung c\u1ea5p n\u01b0\u1edbc s\u1ea1ch nh\u1edd \u0111\u1ed9 b\u1ec1n, t\u00ednh v\u1ec7 sinh v\u00e0 kh\u1ea3 n\u0103ng gi\u1ea3m r\u00f2 r\u1ec9. \u0110\u00e2y c\u0169ng l\u00e0 m\u1ea3nh gh\u00e9p quan tr\u1ecdng c\u1ee7a x\u00e2y d\u1ef1ng b\u1ec1n v\u1eefng: k\u00e9o d\u00e0i v\u00f2ng \u0111\u1eddi t\u00e0i s\u1ea3n, t\u00e1i ch\u1ebf 100%, gi\u1ea3m ph\u00e1t th\u1ea3i v\u00f2ng \u0111\u1eddi. B\u00e0i vi\u1ebft n\u00e0y \u0111i th\u1eb3ng v\u00e0o \u1ee9ng d\u1ee5ng inox \u0111\u1ec3 gi\u1ea3m th\u1ea5t tho\u00e1t n\u01b0\u1edbc (Non-Revenue Water \u2013 NRW) t\u1eeb nh\u00e0 m\u00e1y \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i, k\u00e8m khuy\u1ebfn ngh\u1ecb k\u1ef9 thu\u1eadt cho \u0111i\u1ec1u ki\u1ec7n Vi\u1ec7t Nam.<\/p>\n<h2 id=\"toc-0-that-thoat-nuoc-sach-vi-sao-vat-lieu-quyet-dinh\">Th\u1ea5t tho\u00e1t n\u01b0\u1edbc s\u1ea1ch: v\u00ec sao v\u1eadt li\u1ec7u quy\u1ebft \u0111\u1ecbnh<\/h2>\n<p>&#8211; Th\u1ea5t tho\u00e1t th\u1ef1c (real losses): r\u00f2 r\u1ec9 t\u1eeb \u1ed1ng, m\u1ed1i n\u1ed1i, ph\u1ee5 ki\u1ec7n; v\u1ee1 \u1ed1ng do b\u00faa n\u01b0\u1edbc; \u0103n m\u00f2n t\u1ea1o l\u1ed7 kim (pinholes).<br \/>\n&#8211; Th\u1ea5t tho\u00e1t bi\u1ec3u ki\u1ebfn (apparent losses): \u0111\u1ed3ng h\u1ed3, \u0111\u1ea5u n\u1ed1i.<br \/>\nTrong \u0111\u00f3, v\u1eadt li\u1ec7u v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i n\u1ed1i t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn th\u1ea5t tho\u00e1t th\u1ef1c. Y\u00eau c\u1ea7u v\u1edbi v\u1eadt li\u1ec7u cho n\u01b0\u1edbc s\u1ea1ch:<br \/>\n&#8211; Ch\u1ed1ng \u0103n m\u00f2n trong m\u00f4i tr\u01b0\u1eddng c\u00f3 clo d\u01b0, ion clorua, pH dao \u0111\u1ed9ng.<br \/>\n&#8211; K\u00edn kh\u00edt m\u1ed1i n\u1ed1i, ch\u1ecbu b\u00faa n\u01b0\u1edbc, m\u1ecfi chu k\u1ef3 \u00e1p l\u1ef1c.<br \/>\n&#8211; V\u1ec7 sinh \u2013 kh\u00f4ng r\u00f2 r\u1ec9 kim lo\u1ea1i n\u1eb7ng, h\u1ea1n ch\u1ebf h\u00ecnh th\u00e0nh biofilm.<br \/>\n&#8211; Tu\u1ed5i th\u1ecd d\u00e0i, chi ph\u00ed v\u00f2ng \u0111\u1eddi th\u1ea5p, th\u00e2n thi\u1ec7n t\u00e1i ch\u1ebf.<\/p>\n<h2 id=\"toc-1-vi-sao-inox-vuot-troi-trong-xu-ly-va-cap-nuoc\">V\u00ec sao inox v\u01b0\u1ee3t tr\u1ed9i trong x\u1eed l\u00fd v\u00e0 c\u1ea5p n\u01b0\u1edbc<\/h2>\n<h3>Ch\u1ed1ng \u0103n m\u00f2n v\u00e0 v\u1ec7 sinh<\/h3>\n<p>&#8211; L\u1edbp th\u1ee5 \u0111\u1ed9ng Cr2O3 t\u1ef1 ph\u1ee5c h\u1ed3i gi\u00fap inox kh\u00e1ng \u0103n m\u00f2n l\u1ed7, k\u1ebd v\u00e0 n\u1ee9t do \u1ee9ng su\u1ea5t t\u1ed1t h\u01a1n th\u00e9p m\u1ea1 k\u1ebdm, gang.<br \/>\n&#8211; Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi clo d\u01b0 th\u00f4ng th\u01b0\u1eddng, ozone, UV; b\u1ec1 m\u1eb7t nh\u1eb5n h\u1ea1n ch\u1ebf b\u00e1m c\u1eb7n v\u00e0 biofilm.<br \/>\n&#8211; Ch\u1ec9 s\u1ed1 PREN (pitting resistance): 304 ~18, 316L ~24, duplex 2205 ~35; PREN cao \u2192 kh\u00e1ng clorua t\u1ed1t h\u01a1n \u1edf v\u00f9ng ven bi\u1ec3n, n\u01b0\u1edbc l\u1ee3.<\/p>\n<h3>\u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc, ch\u1ecbu \u00e1p v\u00e0 b\u00faa n\u01b0\u1edbc<\/h3>\n<p>&#8211; Inox c\u00f3 gi\u1edbi h\u1ea1n ch\u1ea3y cao, cho ph\u00e9p d\u00f9ng \u1ed1ng th\u00e0nh m\u1ecfng nh\u01b0ng v\u1eabn \u0111\u1ea1t PN16\u2013PN25.<br \/>\n&#8211; Ch\u1ecbu m\u1ecfi t\u1ed1t d\u01b0\u1edbi chu k\u1ef3 \u00e1p l\u1ef1c, gi\u1ea3m vi n\u1ee9t t\u1ea1i m\u1ed1i n\u1ed1i.<br \/>\n&#8211; H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p h\u01a1n nh\u1ef1a (\u224817\u00d710\u207b\u2076\/K vs 100\u2013200\u00d710\u207b\u2076\/K), \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc \u2013 \u00edt \u201cth\u1edf\u201d g\u00e2y h\u1edf m\u1ed1i n\u1ed1i.<\/p>\n<h3>M\u1ed1i n\u1ed1i k\u00edn kh\u00edt, \u00edt r\u00f2 r\u1ec9<\/h3>\n<p>&#8211; H\u00e0n h\u1ed3 quang TIG\/orbital cho m\u1ed1i h\u00e0n to\u00e0n ph\u1ea7n, m\u1eadt \u0111\u1ed9 khuy\u1ebft t\u1eadt th\u1ea5p.<br \/>\n&#8211; H\u1ec7 press-fit inox m\u1ecfng (EN 10312) v\u1edbi v\u00f2ng \u0111\u1ec7m EPDM\/EPDM-H cung c\u1ea5p l\u1eafp \u0111\u1eb7t nhanh, ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed3ng nh\u1ea5t; kh\u00f4ng ren, kh\u00f4ng cu\u1ed1n keo \u2013 \u00edt \u0111i\u1ec3m r\u00f2 h\u01a1n.<\/p>\n<h3>Chi ph\u00ed v\u00f2ng \u0111\u1eddi (LCC) th\u1ea5p, b\u1ec1n v\u1eefng<\/h3>\n<p>&#8211; Tu\u1ed5i th\u1ecd th\u1ef1c t\u1ebf >50 n\u0103m \u1edf n\u01b0\u1edbc s\u1ea1ch; b\u1ea3o tr\u00ec t\u1ed1i thi\u1ec3u.<br \/>\n&#8211; T\u1ef7 l\u1ec7 t\u00e1i ch\u1ebf cao, gi\u1ea3m chi ph\u00ed x\u1eed l\u00fd cu\u1ed1i v\u00f2ng \u0111\u1eddi.<br \/>\n&#8211; Nghi\u00ean c\u1ee9u c\u1ee7a ISSF\/Nickel Institute cho th\u1ea5y trong m\u00f4i tr\u01b0\u1eddng c\u00f3 clorua, LCC inox th\u1ea5p h\u01a1n th\u00e9p carbon ph\u1ee7 ho\u1eb7c m\u1ea1 k\u1ebdm do tr\u00e1nh thay th\u1ebf s\u1edbm v\u00e0 gi\u1ea3m th\u1ea5t tho\u00e1t.<\/p>\n<h2 id=\"toc-2-ung-dung-cu-the-theo-tung-khau-he-thong\">\u1ee8ng d\u1ee5ng c\u1ee5 th\u1ec3 theo t\u1eebng kh\u00e2u h\u1ec7 th\u1ed1ng<\/h2>\n<h3>Khu thu n\u01b0\u1edbc \u2013 tr\u1ea1m b\u01a1m \u2013 nh\u00e0 m\u00e1y x\u1eed l\u00fd<\/h3>\n<p>&#8211; Song ch\u1eafn r\u00e1c, l\u01b0\u1edbi h\u00fat, tr\u1ee5c b\u01a1m, b\u1ec7 c\u1ea7u g\u1ea1t b\u1ec3 l\u1eafng: 304\/316L.<br \/>\n&#8211; H\u1ec7 \u1ed1ng kh\u00ed\/aeration, \u1ed1ng ph\u1ea3n \u1ee9ng ozone\/UV, \u0111\u01b0\u1eddng h\u00f3a ch\u1ea5t (PAC, v\u00f4i, CO2): 316L; v\u1edbi NaOCl n\u00ean b\u1ed1 tr\u00ed xa \u0111i\u1ec3m phun v\u00e0 tr\u00e1nh khe k\u1ebd; n\u01a1i n\u1ed3ng \u0111\u1ed9\/h\u1eadu qu\u1ea3 \u0103n m\u00f2n cao c\u00e2n nh\u1eafc duplex 2205 ho\u1eb7c d\u00f9ng b\u1ed3n\/\u0111\u01b0\u1eddng \u1ed1ng polymer chuy\u00ean d\u1ee5ng cho hypochlorite.<br \/>\n&#8211; B\u1ec3 ch\u1ee9a\/th\u00e1p ti\u1ebfp x\u00fac \u1edf n\u01b0\u1edbc l\u1ee3\/ven bi\u1ec3n: 316L ho\u1eb7c 2205 \u0111\u1ec3 kh\u00e1ng clorua t\u1ed1t h\u01a1n.<\/p>\n<h3>Tuy\u1ebfn truy\u1ec1n d\u1eabn \u2013 ph\u00e2n ph\u1ed1i<\/h3>\n<p>&#8211; C\u1ee5m nh\u00e0 m\u00e1y, tr\u1ea1m t\u0103ng \u00e1p, v\u01b0\u1ee3t s\u00f4ng, qua c\u1ea7u: inox h\u00e0n\/\u1ed1ng h\u00e0n m\u1ecfng theo AWWA C220 ho\u1eb7c ASTM A312\/A778, \u01b0u ti\u00ean 316L\/2205 \u1edf m\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n.<br \/>\n&#8211; \u0110\u1ea5u n\u1ed1i d\u1ecbch v\u1ee5 (service line) v\u00e0 nh\u00e1nh nh\u1ecf: \u1ed1ng inox m\u1ecfng EN 10312, m\u1ed1i n\u1ed1i press-fit; thay th\u1ebf \u1ed1ng m\u1ea1 k\u1ebdm ren c\u0169 \u2013 gi\u1ea3m tri\u1ec7t \u0111\u1ec3 vi r\u00f2 v\u00e0 l\u1ed7 kim.<br \/>\n&#8211; H\u1ed1 van, manifold, bu\u1ed3ng \u0111\u1ed3ng h\u1ed3 t\u1eadp trung: khung\/k\u1ec7, \u1ed1ng g\u00f3p inox t\u0103ng \u0111\u1ed9 k\u00edn, d\u1ec5 v\u1ec7 sinh, gi\u1ea3m t\u1eafc ngh\u1ebdn.<\/p>\n<h3>T\u00f2a nh\u00e0, b\u1ec7nh vi\u1ec7n, kh\u00e1ch s\u1ea1n, nh\u00e0 m\u00e1y th\u1ef1c ph\u1ea9m<\/h3>\n<p>&#8211; Riser v\u00e0 m\u1ea1ng n\u01b0\u1edbc u\u1ed1ng: 304\/316L theo EN 10312\/ASTM A312; press-fit \u0111\u1ea1t ch\u1ee9ng nh\u1eadn NSF\/ANSI\/CAN 61, WRAS, DVGW W270, an to\u00e0n ti\u1ebfp x\u00fac n\u01b0\u1edbc u\u1ed1ng.<br \/>\n&#8211; \u01afu \u0111i\u1ec3m: thi c\u00f4ng nhanh, \u00edt m\u1ed1i n\u1ed1i, nh\u1ecf g\u1ecdn, gi\u1ea3m r\u00f2 r\u1ec9 v\u00e0 chi ph\u00ed v\u1eadn h\u00e0nh.<\/p>\n<h2 id=\"toc-3-lua-chon-mac-thep-chieu-day-va-tieu-chuan\">L\u1ef1a ch\u1ecdn m\u00e1c th\u00e9p, chi\u1ec1u d\u00e0y v\u00e0 ti\u00eau chu\u1ea9n<\/h2>\n<p>&#8211; 304\/304L: n\u01b0\u1edbc s\u1ea1ch, clo d\u01b0 th\u1ea5p, Cl\u2013 <200 mg\/L, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng; d\u00f9ng cho thi\u1ebft b\u1ecb, \u1ed1ng trong nh\u00e0 m\u00e1y, h\u1ec7 t\u00f2a nh\u00e0 n\u1ed9i \u0111\u1ecba kh\u00f4ng ven bi\u1ec3n.  \n- 316\/316L: Cl\u2013 200\u20131.000 mg\/L, khu v\u1ef1c ven bi\u1ec3n; ph\u00f9 h\u1ee3p \u0111\u01b0\u1eddng \u1ed1ng ngo\u00e0i tr\u1eddi, b\u1ec3\/thi\u1ebft b\u1ecb ti\u1ebfp x\u00fac clo d\u01b0.  \n- Duplex 2205: n\u01b0\u1edbc l\u1ee3\/bi\u1ec3n, Cl\u2013 >1.000 mg\/L ho\u1eb7c r\u1ee7i ro SCC\/pitting cao; tuy\u1ebfn v\u01b0\u1ee3t s\u00f4ng\/qua c\u1ea7u, m\u00f4i tr\u01b0\u1eddng phun m\u1eb7n.<br \/>\nTi\u00eau chu\u1ea9n khuy\u1ebfn ngh\u1ecb:<br \/>\n&#8211; \u1ed0ng: ASTM A312 (seamless\/welded), ASTM A778 (welded thin-wall), EN 10312 (\u1ed1ng inox cho n\u01b0\u1edbc), AWWA C220 (\u1ed1ng inox cho n\u01b0\u1edbc s\u1ea1ch\/n\u01b0\u1edbc th\u1ea3i).<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n: ASTM A403 (fittings), press-fitting theo DVGW W534\/KIWA\/WRAS.<br \/>\n&#8211; An to\u00e0n n\u01b0\u1edbc u\u1ed1ng: NSF\/ANSI\/CAN 61, 372 (kh\u00f4ng ch\u00ec), DVGW W270 (vi sinh).<br \/>\n&#8211; Vi\u1ec7t Nam: thi\u1ebft k\u1ebf\/thi c\u00f4ng \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc theo QCVN 01-1:2018\/BYT.<br \/>\nG\u1ee3i \u00fd chi\u1ec1u d\u00e0y:<br \/>\n&#8211; H\u1ec7 t\u00f2a nh\u00e0\/\u0111\u1ea5u n\u1ed1i d\u1ecbch v\u1ee5 PN16: 0,6\u20131,5 mm (EN 10312, DN15\u2013DN100).<br \/>\n&#8211; Tuy\u1ebfn \u00e1p l\u1ef1c cao: ch\u1ecdn Schedule 10\/40 theo t\u00ednh to\u00e1n t = (P\u00b7D)\/(2\u00b7S\u00b7E) c\u00f3 c\u1ed9ng b\u00f9 \u0103n m\u00f2n; v\u1edbi inox th\u01b0\u1eddng ch\u1ecdn b\u00f9 \u0103n m\u00f2n nh\u1ecf nh\u1edd kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t.<\/p>\n<h2 id=\"toc-4-thiet-ke-thi-cong-de-chong-ro-ri-va-an-mon\">Thi\u1ebft k\u1ebf \u2013 thi c\u00f4ng \u0111\u1ec3 ch\u1ed1ng r\u00f2 r\u1ec9 v\u00e0 \u0103n m\u00f2n<\/h2>\n<p>&#8211; Tr\u00e1nh khe k\u1ebd: ch\u1ecdn ph\u1ee5 ki\u1ec7n h\u00e0n\/press ch\u1ea5t l\u01b0\u1ee3ng; h\u1ea1n ch\u1ebf ren; thi\u1ebft k\u1ebf tho\u00e1t n\u01b0\u1edbc v\u00e0 th\u00f4ng kh\u00ed \u0111\u1ec3 kh\u00f4ng \u0111\u1ecdng c\u1ee5c b\u1ed9 NaOCl.<br \/>\n&#8211; H\u00e0n \u0111\u00fang quy tr\u00ecnh: back-purge b\u1eb1ng kh\u00ed tr\u01a1, m\u1ed1i h\u00e0n nh\u1eb5n; t\u1ea9y g\u1ec9 &#038; th\u1ee5 \u0111\u1ed9ng (ASTM A380\/A967) ph\u1ee5c h\u1ed3i l\u1edbp th\u1ee5 \u0111\u1ed9ng.<br \/>\n&#8211; C\u00e1ch ly \u0111i\u1ec7n h\u00f3a: khi n\u1ed1i v\u1edbi th\u00e9p carbon\/\u0111\u1ed3ng, d\u00f9ng m\u1ed1i n\u1ed1i c\u00e1ch \u0111i\u1ec7n\/dielectric; ch\u1ecdn gio\u0103ng EPDM ch\u1ee9ng nh\u1eadn n\u01b0\u1edbc u\u1ed1ng.<br \/>\n&#8211; Ki\u1ec3m so\u00e1t th\u1ee7y l\u1ef1c: l\u1eafp PRV, b\u1eaby b\u00faa n\u01b0\u1edbc, kh\u1edfi \u0111\u1ed9ng m\u1ec1m b\u01a1m \u2013 gi\u1ea3m xung \u00e1p ph\u00e1 ho\u1ea1i m\u1ed1i n\u1ed1i.<br \/>\n&#8211; V\u1ec7 sinh v\u00e0 v\u1eadn h\u00e0nh: tr\u00e1nh ch\u1ea5t t\u1ea9y ch\u1ee9a clorua n\u1ed3ng \u0111\u1ed9 cao tr\u00ean b\u1ec1 m\u1eb7t inox; duy tr\u00ec clo d\u01b0 trong ng\u01b0\u1ee1ng quy chu\u1ea9n; x\u1ea3 c\u1eb7n, tr\u00e1nh l\u01b0u n\u01b0\u1edbc t\u0129nh k\u00e9o d\u00e0i \u0111\u1ec3 h\u1ea1n ch\u1ebf MIC.<br \/>\n&#8211; Ki\u1ec3m th\u1eed: th\u1ee7y l\u1ef1c \u22651,5\u00d7P l\u00e0m vi\u1ec7c; soi n\u1ed9i soi m\u1ed1i h\u00e0n c\u00e1c tuy\u1ebfn quan tr\u1ecdng; ghi log r\u00f2 r\u1ec9 v\u00e0 s\u1eeda ngay \u0111i\u1ec3m \u201c\u1ea9m \u01b0\u1edbt\u201d.<\/p>\n<h2 id=\"toc-5-so-sanh-nhanh-voi-vat-lieu-pho-bien\">So s\u00e1nh nhanh v\u1edbi v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn<\/h2>\n<p>&#8211; Th\u00e9p m\u1ea1 k\u1ebdm: nhanh h\u1ecfng trong n\u01b0\u1edbc clo h\u00f3a; l\u1ed7 kim, ren r\u1ec9; r\u1ee7i ro k\u1ebdm h\u00f2a tan v\u00e0 ph\u1ee5 gia ch\u00ec c\u0169.<br \/>\n&#8211; Gang d\u1ebbo l\u00f3t v\u1eefa: ph\u00f9 h\u1ee3p tuy\u1ebfn truy\u1ec1n d\u1eabn l\u1edbn nh\u01b0ng c\u1ea7n b\u1ea3o v\u1ec7 \u0103n m\u00f2n b\u00ean ngo\u00e0i; m\u1ed1i n\u1ed1i gio\u0103ng c\u00f3 th\u1ec3 r\u00f2 sau l\u00fan n\u1ec1n\/b\u00faa n\u01b0\u1edbc.<br \/>\n&#8211; HDPE\/PVC-U: kh\u00f4ng \u0103n m\u00f2n h\u00f3a h\u1ecdc, nh\u1eb9; nh\u01b0ng gi\u00e3n n\u1edf nhi\u1ec7t l\u1edbn, nh\u1ea1y c\u1ea3m thi c\u00f4ng (fusion\/welding), gi\u1edbi h\u1ea1n nhi\u1ec7t\/\u00e1p; m\u1ed9t s\u1ed1 c\u1ea5p nh\u1ef1a c\u00f3 \u0111\u1ed9 k\u00edn m\u1ed1i n\u1ed1i ph\u1ee5 thu\u1ed9c tay ngh\u1ec1.<br \/>\n&#8211; Inox: \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u cao h\u01a1n, nh\u01b0ng gi\u1ea3m s\u1ed1 m\u1ed1i n\u1ed1i, k\u00edn kh\u00edt, b\u1ec1n h\u00f3a h\u1ecdc \u2013 t\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi v\u00e0 NRW gi\u1ea3m r\u00f5 \u1edf m\u00f4i tr\u01b0\u1eddng c\u00f3 clorua, khu v\u1ef1c ven bi\u1ec3n v\u00e0 c\u00e1c \u0111i\u1ec3m nh\u1ea1y c\u1ea3m r\u00f2 r\u1ec9.<\/p>\n<h2 id=\"toc-6-bai-hoc-trien-khai-va-vi-du-dien-hinh\">B\u00e0i h\u1ecdc tri\u1ec3n khai v\u00e0 v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh<\/h2>\n<p>&#8211; Tokyo: thay th\u1ebf di\u1ec7n r\u1ed9ng \u1ed1ng d\u1ecbch v\u1ee5 b\u1eb1ng \u1ed1ng inox m\u1ecfng v\u00e0 fitting \u00e9p, NRW \u0111\u00f4 th\u1ecb gi\u1ea3m m\u1ea1nh xu\u1ed1ng m\u1ee9c r\u1ea5t th\u1ea5p; tu\u1ed5i th\u1ecd \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc c\u1ea3i thi\u1ec7n (ngu\u1ed3n: International Stainless Steel Forum \u2013 case studies).<br \/>\n&#8211; \u0110\u00e0i B\u1eafc\/Seoul v\u00e0 nhi\u1ec1u th\u00e0nh ph\u1ed1 ch\u00e2u \u00c2u: d\u00f9ng inox cho \u0111\u1ea5u n\u1ed1i d\u1ecbch v\u1ee5 v\u00e0 h\u1ec7 t\u00f2a nh\u00e0 \u0111\u1ec3 gi\u1ea3m r\u00f2 r\u1ec9 v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec (ngu\u1ed3n: ISSF, Nickel Institute).<br \/>\n&#8211; Nh\u00e0 m\u00e1y n\u01b0\u1edbc Singapore (PUB) v\u00e0 EU: inox ph\u1ed5 bi\u1ebfn cho b\u1ec3 l\u1eafng, c\u1ea7u g\u1ea1t, h\u1ec7 ozone\/UV, \u0111\u01b0\u1eddng \u1ed1ng h\u00f3a ch\u1ea5t do \u0111\u00f2i h\u1ecfi v\u1ec7 sinh v\u00e0 ch\u1ed1ng \u0103n m\u00f2n (ngu\u1ed3n: Nickel Institute, Euro Inox).<\/p>\n<h2 id=\"toc-7-khuyen-nghi-cho-du-an-tai-viet-nam\">Khuy\u1ebfn ngh\u1ecb cho d\u1ef1 \u00e1n t\u1ea1i Vi\u1ec7t Nam<\/h2>\n<p>&#8211; \u0110\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc (Cl\u2013, clo d\u01b0, pH, nhi\u1ec7t \u0111\u1ed9) v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng; ch\u1ecdn m\u00e1c 304\/316L\/2205 ph\u00f9 h\u1ee3p.<br \/>\n&#8211; \u01afu ti\u00ean \u1ed1ng m\u1ecfng EN 10312 + press-fit cho \u0111\u1ea5u n\u1ed1i d\u1ecbch v\u1ee5\/t\u00f2a nh\u00e0; \u1ed1ng h\u00e0n theo ASTM A312\/AWWA C220 cho tuy\u1ebfn ngo\u00e0i tr\u1eddi.<br \/>\n&#8211; Y\u00eau c\u1ea7u ch\u1ee9ng nh\u1eadn NSF\/ANSI\/CAN 61 ho\u1eb7c WRAS\/DVGW cho \u1ed1ng, fitting, gio\u0103ng.<br \/>\n&#8211; Hu\u1ea5n luy\u1ec7n th\u1ee3 h\u00e0n\/orbital v\u00e0 th\u1ee3 l\u1eafp press; ki\u1ec3m so\u00e1t nhi\u1ec5m s\u1eaft (kh\u00f4ng d\u00f9ng d\u1ee5ng c\u1ee5 m\u00e0i th\u00e9p carbon l\u00ean inox).<br \/>\n&#8211; L\u1eadp k\u1ebf ho\u1ea1ch ki\u1ec3m th\u1eed \u00e1p l\u1ef1c, th\u1ee5 \u0111\u1ed9ng h\u00f3a, ki\u1ec3m tra r\u00f2 r\u1ec9 \u0111\u1ecbnh k\u1ef3; \u0111o NRW theo DMA \u0111\u1ec3 ch\u1ee9ng minh hi\u1ec7u qu\u1ea3 \u0111\u1ea7u t\u01b0.<\/p>\n<h2 id=\"toc-8-vi-du-tinh-chi-phi-vong-doi-tom-luoc\">V\u00ed d\u1ee5 t\u00ednh chi ph\u00ed v\u00f2ng \u0111\u1eddi (t\u00f3m l\u01b0\u1ee3c)<\/h2>\n<p>Gi\u1ea3 s\u1eed thay 1.000 \u0111\u1ea5u n\u1ed1i d\u1ecbch v\u1ee5 DN20 t\u1eeb \u1ed1ng m\u1ea1 k\u1ebdm ren sang inox m\u1ecfng press-fit:<br \/>\n&#8211; Gi\u1ea3m r\u00f2 r\u1ec9 vi m\u00f4 0,05 m\u00b3\/\u0111\u1ea5u n\u1ed1i\/ng\u00e0y \u2192 ti\u1ebft ki\u1ec7m ~18.250 m\u00b3\/n\u0103m.<br \/>\n&#8211; V\u1edbi chi ph\u00ed s\u1ea3n xu\u1ea5t\/n\u00e9n n\u01b0\u1edbc 7.000 \u0111\/m\u00b3, ti\u1ebft ki\u1ec7m ~128 tri\u1ec7u \u0111\/n\u0103m.<br \/>\n&#8211; Tu\u1ed5i th\u1ecd inox 50 n\u0103m vs m\u1ea1 k\u1ebdm 10\u201315 n\u0103m v\u00e0 \u00edt s\u1eeda ch\u1eefa \u2192 t\u1ed5ng LCC gi\u1ea3m 20\u201340% (tham kh\u1ea3o c\u00e1c nghi\u00ean c\u1ee9u ISSF\/Nickel Institute). Th\u1eddi gian ho\u00e0n v\u1ed1n th\u01b0\u1eddng trong 3\u20137 n\u0103m t\u00f9y gi\u00e1 n\u01b0\u1edbc v\u00e0 chi ph\u00ed nh\u00e2n c\u00f4ng \u0111\u1ecba ph\u01b0\u01a1ng.<\/p>\n<h2 id=\"toc-9-bao-tri-va-van-hanh\">B\u1ea3o tr\u00ec v\u00e0 v\u1eadn h\u00e0nh<\/h2>\n<p>&#8211; R\u1eeda \u0111\u1ecbnh k\u1ef3, x\u1ea3 kh\u00ed\/\u0111i\u1ec3m ch\u1ebft; tr\u00e1nh \u0111\u1ecdng h\u00f3a ch\u1ea5t; ki\u1ec3m so\u00e1t clo d\u01b0 theo QCVN 01-1:2018\/BYT.<br \/>\n&#8211; N\u1ebfu c\u00f3 s\u1eeda ch\u1eefa, th\u1ef1c hi\u1ec7n passivation sau h\u00e0n; ki\u1ec3m tra \u0111i\u1ec7n h\u00f3a khi n\u1ed1i kh\u00e1c kim lo\u1ea1i.<br \/>\n&#8211; L\u1eadp danh m\u1ee5c v\u1eadt t\u01b0 thay th\u1ebf (gio\u0103ng EPDM, clamp, \u1ed1ng \u0111o\u1ea1n ng\u1eafn) \u0111\u1ec3 x\u1eed l\u00fd nhanh s\u1ef1 c\u1ed1.<\/p>\n<h2 id=\"toc-10-nguon-tham-khao-tieu-bieu\">Ngu\u1ed3n tham kh\u1ea3o ti\u00eau bi\u1ec3u<\/h2>\n<p>&#8211; International Stainless Steel Forum (ISSF): c\u00e1c case study v\u1ec1 inox trong h\u1ec7 th\u1ed1ng c\u1ea5p n\u01b0\u1edbc v\u00e0 gi\u1ea3m NRW.<br \/>\n&#8211; Nickel Institute: H\u01b0\u1edbng d\u1eabn ch\u1ecdn inox cho n\u01b0\u1edbc u\u1ed1ng v\u00e0 m\u00f4i tr\u01b0\u1eddng c\u00f3 clorua; khuy\u1ebfn ngh\u1ecb m\u00e1c theo n\u1ed3ng \u0111\u1ed9 Cl\u2013 v\u00e0 clo d\u01b0.<br \/>\n&#8211; AWWA C220: Stainless-Steel Pipe, 1\/2 in. and Larger, for Water and Wastewater.<br \/>\n&#8211; EN 10312: \u1ed0ng inox cho n\u01b0\u1edbc v\u00e0 n\u01b0\u1edbc n\u00f3ng.<br \/>\n&#8211; NSF\/ANSI\/CAN 61 &#038; 372: V\u1eadt li\u1ec7u ti\u1ebfp x\u00fac n\u01b0\u1edbc u\u1ed1ng.<br \/>\n&#8211; QCVN 01-1:2018\/BYT: Quy chu\u1ea9n k\u1ef9 thu\u1eadt qu\u1ed1c gia v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc s\u1ea1ch s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch sinh ho\u1ea1t.<br \/>\n&#8211; International Water Association (IWA): t\u00e0i li\u1ec7u v\u1ec1 Non\u2011Revenue Water v\u00e0 ch\u01b0\u01a1ng tr\u00ecnh DMA.<\/p>\n<h2 id=\"toc-11-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>Inox gi\u1ea3i quy\u1ebft g\u1ed1c r\u1ec5 th\u1ea5t tho\u00e1t n\u01b0\u1edbc s\u1ea1ch: \u0103n m\u00f2n v\u00e0 m\u1ed1i n\u1ed1i k\u00e9m k\u00edn. V\u1edbi l\u1ef1a ch\u1ecdn m\u00e1c ph\u00f9 h\u1ee3p (304\/316L\/2205), ti\u00eau chu\u1ea9n \u0111\u00fang (EN 10312, ASTM A312, AWWA C220) v\u00e0 thi c\u00f4ng chu\u1ea9n (h\u00e0n\/press, passivation, c\u00e1ch ly \u0111i\u1ec7n h\u00f3a), h\u1ec7 th\u1ed1ng x\u1eed l\u00fd \u2013 c\u1ea5p n\u01b0\u1edbc s\u1ebd:<br \/>\n&#8211; Gi\u1ea3m r\u00f5 r\u1ec7t r\u00f2 r\u1ec9 v\u00e0 chi ph\u00ed v\u1eadn h\u00e0nh.<br \/>\n&#8211; \u0110\u1ea3m b\u1ea3o v\u1ec7 sinh n\u01b0\u1edbc u\u1ed1ng v\u00e0 \u0111\u1ed9 b\u1ec1n >50 n\u0103m.<br \/>\n&#8211; T\u1ed1i \u01b0u chi ph\u00ed v\u00f2ng \u0111\u1eddi v\u00e0 \u0111\u00f3ng g\u00f3p m\u1ee5c ti\u00eau b\u1ec1n v\u1eefng.<br \/>\nC\u1ea7n t\u1ed1i \u01b0u gi\u1ea3i ph\u00e1p cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n k\u1ef9 thu\u1eadt v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn ch\u1ecdn m\u00e1c inox, ti\u00eau chu\u1ea9n \u1ed1ng\/ph\u1ee5 ki\u1ec7n v\u00e0 gi\u1ea3i ph\u00e1p l\u1eafp \u0111\u1eb7t gi\u00fap gi\u1ea3m r\u00f2 r\u1ec9, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd h\u1ec7 th\u1ed1ng x\u1eed l\u00fd \u2013 cung c\u1ea5p n\u01b0\u1edbc s\u1ea1ch.<\/p>\n","protected":false},"author":7,"featured_media":1051,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1533","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1533","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/comments?post=1533"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1533\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1051"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}