{"id":328,"date":"2026-05-14T09:23:57","date_gmt":"2026-05-14T09:23:57","guid":{"rendered":"https:\/\/kysearo.com\/?p=328"},"modified":"2026-05-14T09:23:58","modified_gmt":"2026-05-14T09:23:58","slug":"chemical-dosing-system-of-seawater-desalination-plant","status":"publish","type":"post","link":"https:\/\/kysearo.com\/vi\/chemical-dosing-system-of-seawater-desalination-plant\/","title":{"rendered":"H\u1ec7 th\u1ed1ng c\u1ea5p h\u00f3a ch\u1ea5t c\u1ee7a nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n"},"content":{"rendered":"

H\u1ec7 th\u1ed1ng \u0111\u1ecbnh l\u01b0\u1ee3ng h\u00f3a ch\u1ea5t l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n, b\u1edfi nh\u01b0 ch\u00fang ta \u0111\u00e3 bi\u1ebft, trong n\u01b0\u1edbc bi\u1ec3n c\u00f3 r\u1ea5t nhi\u1ec1u t\u1ea1p ch\u1ea5t. Do \u0111\u00f3, vi\u1ec7c b\u1ed5 sung h\u00f3a ch\u1ea5t trong qu\u00e1 tr\u00ecnh ti\u1ec1n x\u1eed l\u00fd c\u1ee7a h\u1ec7 th\u1ed1ng RO kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n l\u00e0 c\u1ea7n thi\u1ebft, nh\u1eb1m ti\u00eau di\u1ec7t vi khu\u1ea9n, kh\u1eed m\u00f9i, kh\u1eed m\u00e0u v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c h\u1ea1t b\u1ea9n kh\u00e1c. Nh\u00ecn chung, c\u00e1c ch\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng bao g\u1ed3m ch\u1ea5t keo t\u1ee5, ch\u1ea5t di\u1ec7t khu\u1ea9n, ch\u1ea5t kh\u1eed oxy, ch\u1ea5t ch\u1ed1ng k\u1ebft t\u1ee7a, v.v. \u0110\u00e2y l\u00e0 nh\u1eefng h\u00f3a ch\u1ea5t ph\u1ed5 bi\u1ebfn trong nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n<\/strong><\/a>. Do \u0111\u00f3, m\u1ed7i lo\u1ea1i h\u00f3a ch\u1ea5t \u0111\u1ec1u c\u00f3 nh\u1eefng \u0111\u1eb7c t\u00ednh v\u00e0 ch\u1ee9c n\u0103ng ri\u00eang, v\u00ec v\u1eady c\u1ea7n ph\u1ea3i x\u00e1c \u0111\u1ecbnh r\u00f5 lo\u1ea1i h\u00f3a ch\u1ea5t n\u00e0o c\u1ea7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n\n\n\n

\"H\u1ec7<\/figure>\n\n\n\n

Ch\u1ea5t keo t\u1ee5 (PAC ho\u1eb7c FeCl\u2083) cho nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n:<\/strong><\/h3>\n\n\n\n

Ch\u1ea5t keo t\u1ee5 ch\u1ee7 y\u1ebfu c\u00f3 t\u00e1c d\u1ee5ng k\u1ebft t\u1ee5 c\u00e1c h\u1ea1t ph\u00e2n t\u00e1n trong n\u01b0\u1edbc \u0111\u1ec3 d\u1ec5 d\u00e0ng lo\u1ea1i b\u1ecf ch\u00fang trong b\u1ed9 l\u1ecdc c\u00e1t, nh\u1eb1m \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc c\u1ea5p v\u00e0o m\u00e0ng l\u1ecdc (\u0111\u1ed9 \u0111\u1ee5c <1 NTU, SDI < 5). Li\u1ec1u l\u01b0\u1ee3ng ch\u1ea5t keo t\u1ee5 kho\u1ea3ng 2,5\u20135 ppm so v\u1edbi l\u01b0u l\u01b0\u1ee3ng n\u01b0\u1edbc th\u00f4. B\u01a1m \u0111\u1ecbnh l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi b\u01a1m c\u1ea5p n\u01b0\u1edbc. H\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng b\u00e1o \u0111\u1ed9ng v\u00e0 ng\u1eebng b\u01a1m khi m\u1ef1c n\u01b0\u1edbc trong b\u1ec3 xu\u1ed1ng th\u1ea5p.<\/p>\n\n\n\n

Ch\u1ea5t di\u1ec7t khu\u1ea9n cho nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n:<\/strong><\/h3>\n\n\n\n

Trong n\u01b0\u1edbc bi\u1ec3n c\u00f3 r\u1ea5t nhi\u1ec1u vi sinh v\u1eadt, vi khu\u1ea9n v\u00e0 t\u1ea3o. S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a vi khu\u1ea9n v\u00e0 t\u1ea3o trong n\u01b0\u1edbc bi\u1ec3n c\u0169ng nh\u01b0 s\u1ef1 sinh s\u00f4i c\u1ee7a vi sinh v\u1eadt kh\u00f4ng ch\u1ec9 g\u00e2y ra nhi\u1ec1u r\u1eafc r\u1ed1i cho c\u00e1c c\u00f4ng tr\u00ecnh c\u1ea5p n\u01b0\u1edbc m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a thi\u1ebft b\u1ecb kh\u1eed m\u1eb7n n\u01b0\u1edbc bi\u1ec3n v\u00e0 h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng, do \u0111\u00f3 vi\u1ec7c kh\u1eed tr\u00f9ng n\u01b0\u1edbc bi\u1ec3n l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. C\u00e1c ch\u1ea5t di\u1ec7t khu\u1ea9n th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh hai nh\u00f3m: ch\u1ea5t oxy h\u00f3a v\u00e0 ch\u1ea5t kh\u00f4ng oxy h\u00f3a.<\/p>\n\n\n\n

    \n
  • Ch\u1ea5t di\u1ec7t khu\u1ea9n oxy h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ch\u1ea5t oxy h\u00f3a m\u1ea1nh, c\u00f3 kh\u1ea3 n\u0103ng ti\u00eau di\u1ec7t vi sinh v\u1eadt trong n\u01b0\u1edbc. C\u00e1c ch\u1ea5t di\u1ec7t khu\u1ea9n oxy h\u00f3a \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m clo l\u1ecfng, natri hypoclorit, sunfat \u0111\u1ed3ng v\u00e0 c\u00e1c ch\u1ea5t h\u00f3a h\u1ecdc kh\u00e1c.<\/li>\n\n\n\n
  • Ch\u1ea5t di\u1ec7t khu\u1ea9n kh\u00f4ng oxy h\u00f3a kh\u00f4ng ti\u00eau di\u1ec7t vi sinh v\u1eadt m\u00e0 t\u00e1c \u0111\u1ed9ng l\u00ean m\u1ed9t b\u1ed9 ph\u1eadn \u0111\u1eb7c bi\u1ec7t c\u1ee7a ch\u00fang, do \u0111\u00f3 kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c ch\u1ea5t kh\u1eed. Ch\u1ea5t di\u1ec7t khu\u1ea9n kh\u00f4ng oxy h\u00f3a th\u01b0\u1eddng l\u00e0 c\u00e1c h\u1ee3p ch\u1ea5t clorophenol v\u00e0 mu\u1ed1i amoni b\u1eadc b\u1ed1n. Hi\u1ec7u qu\u1ea3 di\u1ec7t khu\u1ea9n c\u1ee7a ch\u1ea5t di\u1ec7t khu\u1ea9n kh\u00f4ng oxy h\u00f3a r\u1ea5t t\u1ed1t v\u00e0 b\u1ec1n v\u1eefng. Ch\u00fang \u00edt b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi qu\u00e1 tr\u00ecnh kh\u1eed c\u1ee7a hydro sunfua, amoniac v\u00e0 c\u00e1c ch\u1ea5t kh\u00e1c, \u0111\u1ed3ng th\u1eddi c\u0169ng \u00edt b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi \u0111\u1ed9 pH trong n\u01b0\u1edbc.<\/li>\n<\/ul>\n\n\n\n
    \"\"\/<\/figure>\n\n\n\n

    Ch\u1ea5t kh\u1eed cho nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n:<\/strong><\/h3>\n\n\n\n

    Ch\u1ea5t di\u1ec7t khu\u1ea9n oxy h\u00f3a \u0111\u01b0\u1ee3c b\u1ed5 sung li\u00ean t\u1ee5c v\u00e0o qu\u00e1 tr\u00ecnh ti\u1ec1n x\u1eed l\u00fd RO, v\u00e0 n\u1ed3ng \u0111\u1ed9 clo t\u1ef1 do \u0111\u01b0\u1ee3c duy tr\u00ec \u1edf m\u1ee9c 0,2\u20130,4 ppm. Tuy nhi\u00ean, y\u00eau c\u1ea7u v\u1ec1 n\u1ed3ng \u0111\u1ed9 clo t\u1ef1 do t\u1ea1i \u0111\u1ea7u v\u00e0o h\u1ec7 th\u1ed1ng RO l\u00e0 d\u01b0\u1edbi 0,1 ppm, do \u0111\u00f3 c\u1ea7n ph\u1ea3i b\u1ed5 sung ch\u1ea5t kh\u1eed \u0111\u1ec3 ki\u1ec3m so\u00e1t n\u1ed3ng \u0111\u1ed9 clo t\u1ef1 do khi n\u01b0\u1edbc bi\u1ec3n \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o h\u1ec7 th\u1ed1ng RO.<\/p>\n\n\n\n

    Ch\u1ea5t ch\u1ed1ng k\u1ebft t\u1ee7a cho nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n:<\/strong><\/h3>\n\n\n\n

    Tr\u01b0\u1edbc khi n\u01b0\u1edbc \u0111\u00e3 qua l\u1ecdc s\u01a1 b\u1ed9 \u0111i v\u00e0o h\u1ec7 th\u1ed1ng RO, vi\u1ec7c b\u1ed5 sung ch\u1ea5t ch\u1ed1ng \u0111\u00f3ng c\u1eb7n nh\u1eb1m ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng b\u00e1m c\u1eb7n \u1edf ph\u00eda n\u01b0\u1edbc c\u00f4 \u0111\u1eb7c c\u1ee7a h\u1ec7 th\u1ed1ng RO, \u0111\u1ea3m b\u1ea3o m\u00f4-\u0111un m\u00e0ng v\u1eabn duy tr\u00ec \u0111\u1ed9 th\u1ea5m t\u1ed1t trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh l\u00e2u d\u00e0i, \u0111\u1ed3ng th\u1eddi k\u00e9o d\u00e0i hi\u1ec7u qu\u1ea3 tu\u1ed5i th\u1ecd c\u1ee7a m\u00e0ng v\u00e0 n\u00e2ng cao t\u00ednh \u1ed5n \u0111\u1ecbnh v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m c\u1ee7a h\u1ec7 th\u1ed1ng th\u1ea9m th\u1ea5u ng\u01b0\u1ee3c. Ch\u1ea5t ch\u1ed1ng \u0111\u00f3ng c\u1eb7n ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng th\u1ea9m th\u1ea5u ng\u01b0\u1ee3c, n\u00f3 c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 s\u1ef1 l\u1eafng \u0111\u1ecdng c\u1ee7a mu\u1ed1i v\u00f4 c\u01a1 v\u00e0 ch\u1ea5t keo tr\u00ean b\u1ec1 m\u1eb7t m\u00e0ng, ki\u1ec3m so\u00e1t m\u1ea1nh m\u1ebd sulfat v\u00e0 ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 s\u1ef1 h\u00ecnh th\u00e0nh s\u1eaft tr\u00ean m\u00e0ng th\u1ea9m th\u1ea5u ng\u01b0\u1ee3c.<\/p>","protected":false},"excerpt":{"rendered":"

    Vi\u1ec7c s\u1eed d\u1ee5ng h\u00f3a ch\u1ea5t l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh c\u1ee7a nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n. B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch ch\u1ee9c n\u0103ng c\u1ee7a c\u00e1c lo\u1ea1i h\u00f3a ch\u1ea5t th\u01b0\u1eddng d\u00f9ng trong h\u1ec7 th\u1ed1ng th\u1ea9m th\u1ea5u ng\u01b0\u1ee3c n\u01b0\u1edbc bi\u1ec3n (SWRO) c\u0169ng nh\u01b0 c\u00e1ch th\u1ee9c ch\u00fang b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng ti\u1ec1n x\u1eed l\u00fd v\u00e0 h\u1ec7 th\u1ed1ng m\u00e0ng th\u1ea9m th\u1ea5u ng\u01b0\u1ee3c.<\/p>","protected":false},"author":1,"featured_media":329,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[269,197,270,272,268,271],"class_list":["post-328","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-desalination-technology","tag-chemical-dosing-system","tag-desalination-plant-maintenance","tag-ro-antiscalant","tag-seawater-bactericide","tag-seawater-desalination-chemicals","tag-swro-pretreatment"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/posts\/328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/comments?post=328"}],"version-history":[{"count":1,"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/posts\/328\/revisions"}],"predecessor-version":[{"id":330,"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/posts\/328\/revisions\/330"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/media\/329"}],"wp:attachment":[{"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/media?parent=328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/categories?post=328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kysearo.com\/vi\/wp-json\/wp\/v2\/tags?post=328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}