{"id":2182,"date":"2024-01-10T09:58:08","date_gmt":"2024-01-10T09:58:08","guid":{"rendered":"https:\/\/demo9.thuythu.vn\/reeco\/?p=2182"},"modified":"2024-01-10T10:34:48","modified_gmt":"2024-01-10T10:34:48","slug":"giai-phap-giam-sat-lien-tuc-oxy-hoa-tan-do-dieu-khien-tu-dong-guong-quat-nuoc-tao-oxy-trong-ao-tom-giup-giam-30-chi-phi-dien-nang","status":"publish","type":"post","link":"https:\/\/demo9.thuythu.vn\/reeco\/giai-phap-giam-sat-lien-tuc-oxy-hoa-tan-do\/","title":{"rendered":"Gi\u1ea3i ph\u00e1p gi\u00e1m s\u00e1t li\u00ean t\u1ee5c oxy h\u00f2a tan (DO) \u2013 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng gu\u1ed3ng qu\u1ea1t n\u01b0\u1edbc t\u1ea1o oxy trong ao t\u00f4m gi\u00fap gi\u1ea3m 30% chi ph\u00ed \u0111i\u1ec7n n\u0103ng"},"content":{"rendered":"

T\u1ea7m quan tr\u1ecdng c\u1ee7a DO v\u00e0 chi ph\u00ed \u0111i\u1ec7n n\u0103ng v\u1eadn h\u00e0nh gu\u1ed3ng qu\u1ea1t n\u01b0\u1edbc ho\u1eb7c thi\u1ebft b\u1ecb s\u1ee5c kh\u00ed trong nu\u00f4i t\u00f4m th\u00e2m canh<\/strong><\/h2>\n

Trong nu\u00f4i t\u00f4m, duy tr\u00ec h\u00e0m l\u01b0\u1ee3ng oxy h\u00f2a tan tr\u00ean 4 mg\/l (l\u00fd t\u01b0\u1edfng l\u00e0 6-8mg\/l)[1] t\u1ea1i c\u00e1c ao nu\u00f4i l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu quy\u1ebft \u0111\u1ecbnh th\u00e0nh c\u00f4ng. Vi\u1ec7c cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 oxy trong su\u1ed1t v\u1ee5 nu\u00f4i gi\u00fap t\u00f4m ph\u00e1t tri\u1ec3n t\u1ed1t, \u0103n kh\u1ecfe v\u00e0 do \u0111\u00f3 gi\u1ea3m thi\u1ec3u l\u01b0\u1ee3ng ch\u1ea5t \u0103n d\u01b0 th\u1eeba trong c\u00e1c ao. V\u1edbi l\u01b0\u1ee3ng th\u1ee9c \u0103n d\u01b0 th\u1ea5p trong ao, ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, gi\u1ea3m c\u00e1c lo\u1ea1i b\u1ec7nh do vi khu\u1ea9n g\u00e2y ra, \u0111\u1ed3ng th\u1eddi gi\u1ea3m l\u01b0\u1ee3ng ch\u1ea5t \u0111\u1ed9c nh\u01b0 H2S, NO2,\u2026 t\u00edch t\u1ee5 trong n\u01b0\u1edbc. H\u00e0m l\u01b0\u1ee3ng oxy h\u00f2a tan c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t nh\u1ea5t t\u1edbi t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a t\u00f4m nu\u00f4i trong v\u00f2ng 10 ng\u00e0y \u0111\u1ea7u ti\u00ean, v\u00e0 ngay sau khi l\u1ed9t x\u00e1c th\u00ec t\u00f4m c\u1ea7n h\u00e0m l\u01b0\u1ee3ng oxy cao g\u1ea5p hai l\u1ea7n so v\u1edbi b\u00ecnh th\u01b0\u1eddng [2].<\/p>\n

Hi\u1ec7n nay t\u1ea1i c\u00e1c ao nu\u00f4i t\u00f4m, c\u00e1c ngu\u1ed3n \u0111i\u1ec7n s\u1eed d\u1ee5ng l\u00e0 \u0111i\u1ec7n 1 pha v\u00e0 3 pha, v\u00e0 \u0111i\u1ec7n sinh ho\u1ea1t 1 pha. Chi ph\u00ed \u0111i\u1ec7n trong nu\u00f4i t\u00f4m th\u1ebb ch\u00e2n tr\u1eafng (TTCT) l\u00f3t b\u1ea1t chi\u1ebfm 7,05%, trong ao \u0111\u1ea5t 6,28% v\u00e0 t\u00f4m s\u00fa th\u00e2m canh l\u00e0 7% so v\u1edbi t\u1ed5ng chi ph\u00ed nu\u00f4i t\u00f4m. Theo th\u00f4ng tin cung c\u1ea5p t\u1eeb T\u1ea1p ch\u00ed th\u1ee7y s\u1ea3n Vi\u1ec7t nam[3], c\u00f4ng su\u1ea5t s\u1eed d\u1ee5ng \u0111i\u1ec7n trong nu\u00f4i t\u00f4m nh\u01b0 sau:<\/p>\n

    \n
  1. Trong nu\u00f4i TTCT l\u00f3t b\u1ea1t, c\u00f4ng su\u1ea5t s\u1eed d\u1ee5ng \u0111i\u1ec7n l\u00e0 150.282kwh\/ha\/v\u1ee5, v\u1edbi 3.234 KWh\/t\u1ea5n t\u00f4m v\u00e0 chi ph\u00ed \u0111i\u1ec7n n\u0103ng l\u00e0 5.085 \u0111\u1ed3ng\/kg t\u00f4m.<\/li>\n
  2. Trong nu\u00f4i TTCT ao \u0111\u1ea5t, c\u00f4ng su\u1ea5t s\u1eed d\u1ee5ng \u0111i\u1ec7n l\u00e0 26.775kWh\/ha\/v\u1ee5, v\u1edbi 2.913 KWh\/t\u1ea5n t\u00f4m v\u00e0 chi ph\u00ed \u0111i\u1ec7n n\u0103ng l\u00e0 4.513 \u0111\u1ed3ng\/kg t\u00f4m.<\/li>\n
  3. Nu\u00f4i t\u00f4m s\u00fa th\u00e2m canh, c\u00f4ng su\u1ea5t s\u1eed d\u1ee5ng \u0111i\u1ec7n l\u00e0 21.540 KWh\/ha\/v\u1ee5, v\u1edbi 4.172 kWh\/t\u1ea5n t\u00f4m.<\/li>\n<\/ol>\n

    C\u00e1c h\u1ec7 th\u1ed1ng cung c\u1ea5p oxy ti\u00eau th\u1ee5 kho\u1ea3ng 80% t\u1ed5ng \u0111i\u1ec7n n\u0103ng s\u1eed d\u1ee5ng t\u1ea1i c\u00e1c ao nu\u00f4i t\u00f4m. V\u1edbi chi ph\u00ed \u0111i\u1ec7n ti\u00eau th\u1ee5 l\u1edbn, ng\u01b0\u1eddi nu\u00f4i t\u00f4m g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n trong vi\u1ec7c m\u1edf r\u1ed9ng quy m\u00f4 ao nu\u00f4i. Nh\u1eb1m gi\u1ea3m thi\u1ec3u \u0111i\u1ec7n n\u0103ng ti\u00eau th\u1ee5 b\u1edfi c\u00e1c c\u00e1c thi\u1ebft b\u1ecb cung c\u1ea5p oxy v\u00e0 qua \u0111\u00f3 t\u0103ng hi\u1ec7u qu\u1ea3 \u0111\u1ea7u t\u01b0 trong nu\u00f4i t\u00f4m, C\u00f4ng ty TNHH Khoa h\u1ecdc v\u00e0 K\u1ef9 thu\u1eadt REECO (Reecotech) \u0111\u00e3 ph\u00e1t tri\u1ec3n Gi\u1ea3i ph\u00e1p gi\u00e1m s\u00e1t li\u00ean t\u1ee5c oxy h\u00f2a tan (DO) \u2013 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng gu\u1ed3ng qu\u1ea1t n\u01b0\u1edbc t\u1ea1o oxy trong ao t\u00f4m. Theo c\u00e1c s\u1ed1 li\u1ec7u ghi nh\u1eadn \u0111\u01b0\u1ee3c, gi\u1ea3i ph\u00e1p \u00e1p d\u1ee5ng khoa h\u1ecdc k\u1ef9 thu\u1eadt n\u00e0y gi\u00fap gi\u1ea3m l\u01b0\u1ee3ng \u0111i\u1ec7n ti\u00eau th\u1ee5 cho c\u00e1c thi\u1ebft b\u1ecb cung c\u1ea5p oxy l\u00ean t\u1edbi 30%.<\/p>\n

    Gi\u1ea3i ph\u00e1p gi\u00e1m s\u00e1t DO \u2013 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng gu\u1ed3ng qu\u1ea1t n\u01b0\u1edbc ho\u1eb7c m\u00e1y t\u1ea1o oxy<\/strong><\/h2>\n

    Reecotech l\u00e0 nh\u00e0 cung c\u1ea5p c\u00f3 kinh nghi\u1ec7m h\u00e0ng \u0111\u1ea7u t\u1ea1i Vi\u1ec7t Nam v\u1ec1 c\u00e1c gi\u1ea3i ph\u00e1p khoa h\u1ecdc k\u1ef9 thu\u1eadt gi\u00e1m s\u00e1t t\u1ef1 \u0111\u1ed9ng v\u00e0 c\u1ea3nh b\u00e1o s\u1edbm v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc. V\u1edbi c\u00e1c y\u00eau c\u1ea7u gi\u00e1m s\u00e1t li\u00ean t\u1ee5c ch\u1ec9 s\u1ed1 DO \u2013 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng gu\u1ed3ng qu\u1ea1t n\u01b0\u1edbc ho\u1eb7c m\u00e1y s\u1ee5c kh\u00ed t\u1ea1i c\u00e1c ao nu\u00f4i t\u00f4m, nh\u1eb1m ti\u1ebft ki\u1ec7m chi ph\u00ed \u0111i\u1ec7n n\u0103ng, t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3 \u0111\u1ea7u t\u01b0, Reecotech k\u00ednh \u0111\u1ec1 xu\u1ea5t Qu\u00fd kh\u00e1ch h\u00e0ng gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y s\u01a1 l\u01b0\u1ee3c theo s\u01a1 \u0111\u1ed3 m\u00f4 t\u1ea3 k\u1ebft n\u1ed1i d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n

    \"\"<\/p>\n

    Theo \u0111\u00f3, c\u00e1c \u0111\u1ea7u \u0111o DO s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 c\u1ea3m bi\u1ebfn quang h\u1ecdc c\u00f3 \u0111\u1ed9 b\u1ec1n cao, th\u1eddi gian \u0111\u00e1p \u1ee9ng nhanh, s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u00e1m s\u00e1t 24\/7 h\u00e0m l\u01b0\u1ee3ng DO t\u1ea1i m\u1ed9t v\u1ecb tr\u00ed trong ao, n\u01a1i \u0111\u01b0\u1ee3c cho l\u00e0 c\u00f3 h\u00e0m l\u01b0\u1ee3ng DO th\u1ea5p nh\u1ea5t. C\u00e1c \u0111\u1ea7u \u0111o DO n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi B\u1ed9 k\u1ebft n\u1ed1i c\u1ea3m bi\u1ebfn \u0111\u1eb7t t\u1ea1i tr\u1ea1m \u0111i\u1ec1u khi\u1ec3n tr\u00ean b\u1edd. B\u1ed9 k\u1ebft n\u1ed1i c\u1ea3m bi\u1ebfn c\u00f3 ch\u1ee9c n\u0103ng thu th\u1eadp d\u1eef li\u1ec7u t\u1eeb c\u00e1c \u0111\u1ea7u \u0111o DO v\u00e0 truy\u1ec1n v\u1ec1 m\u00e1y vi t\u00ednh trung t\u00e2m th\u00f4ng qua d\u00e2y c\u00e1p quang (c\u00f3 chi ph\u00ed kho\u1ea3ng 7.000VN\u0110\/m) v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u quang. B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c m\u00e1y qu\u1ea1t n\u01b0\u1edbc ho\u1eb7c s\u1ee5c kh\u00ed t\u1ea1o oxy trong c\u00e1c ao nu\u00f4i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi relay \u0111i\u1ec1u khi\u1ec3n. Relay n\u00e0y c\u00f3 ch\u1ee9c n\u0103ng \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c m\u00f4-t\u01a1 thi\u1ebft b\u1ecb, c\u1ee5 th\u1ec3 l\u00e0 t\u1ef1 \u0111\u1ed9ng b\u1eadt c\u00e1c m\u00e1y khi h\u00e0m l\u01b0\u1ee3ng DO xu\u1ed1ng th\u1ea5p h\u01a1n 4 mg\/l v\u00e0 t\u1ef1 \u0111\u1ed9ng t\u1eaft m\u00e1y khi DO cao h\u01a1n 4 mg\/l (ho\u1eb7c m\u1ed9t gi\u00e1 tr\u1ecb h\u00e0m l\u01b0\u1ee3ng DO c\u00e0i \u0111\u1eb7t theo y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng) nh\u1eb1m ti\u1ebft ki\u1ec7m \u0111i\u1ec7n. H\u00e0m l\u01b0\u1ee3ng DO trong c\u00e1c ao \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt li\u00ean t\u1ee5c theo th\u1eddi gian th\u1ef1c tr\u00ean m\u00e0n h\u00ecnh m\u00e1y t\u00ednh (ho\u1eb7c tr\u00ean \u1ee9ng d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh, t\u00f9y ch\u1ecdn), gi\u00fap ng\u01b0\u1eddi nu\u00f4i t\u00f4m c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t ao nu\u00f4i m\u1ed9t c\u00e1ch li\u00ean t\u1ee5c, d\u1ec5 d\u00e0ng, v\u00e0 qua \u0111\u00f3 c\u00f3 h\u00e0nh \u0111\u1ed9ng \u1ee9ng ph\u00f3 k\u1ecbp th\u1eddi khi DO gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi m\u1ee9c y\u00eau c\u1ea7u. Chi ph\u00ed \u01b0\u1edbc t\u00ednh cho m\u1ed9t h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t DO \u2013 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng gu\u1ed3ng qu\u1ea1t n\u01b0\u1edbc t\u1ea1i 04 ao nu\u00f4i nh\u01b0 s\u01a1 \u0111\u1ed3 tr\u00ean \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y t\u1ea1i B\u1ea3ng 1.<\/p>\n

    B\u1ea3ng 1. Chi ph\u00ed \u0111\u1ea7u t\u01b0 \u01b0\u1edbc t\u00ednh cho m\u1ed9t h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t DO \u2013 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng gu\u1ed3ng qu\u1ea1t n\u01b0\u1edbc ho\u1eb7c m\u00e1y t\u1ea1o oxy<\/p>\n\n\n\n\n\n\n\n\n\n\n
    TT<\/strong><\/td>\nT\u00ean thi\u1ebft b\u1ecb\u00a0 \u2013 C\u1ea5u h\u00ecnh k\u1ef9 thu\u1eadt<\/strong><\/td>\nSL<\/strong><\/td>\n\u0110\u01a1n gi\u00e1
    \n(VN\u0110)<\/strong><\/td>\n    		Th\u00e0nh ti\u1ec1n<\/strong>(VN\u0110)<\/strong><\/td>\n<\/tr>\n
    1<\/strong><\/td>\n\u0110\u1ea7u \u0111o oxy h\u00f2a tan<\/strong>Model:ODO RTU; H\u00e3ng s\u1ea3n xu\u1ea5t: YSI \u2013 M\u1ef9<\/em><\/p>\n

    \u0110\u1ea7u \u0111o oxy h\u00f2a tan s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 c\u1ea3m bi\u1ebfn quang h\u1ecdc c\u00f3 \u0111\u1ed9 b\u1ec1n cao, th\u1eddi gian \u0111\u00e1p \u1ee9ng nhanh. ODO RTU c\u0169ng c\u00f3 s\u1eb5n v\u1edbi t\u00ednh n\u0103ng \u0111o \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n t\u00edch h\u1ee3p \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng b\u00f9 \u0111\u1ed9 m\u1eb7n.<\/p>\n

    Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/u>:<\/p>\n

      \n
    • K\u00edch th\u01b0\u1edbc: \u0110\u01b0\u1eddng k\u00ednh 2.46 cm, c\u00e1p k\u1ebft n\u1ed1i d\u00e0i 10 m<\/li>\n
    • \u0110o Oxi h\u00f2a tan (DO): C\u00f4ng ngh\u1ec7 \u0111o: quang h\u1ecdc (Optical luminescence). \u0110\u01a1n v\u1ecb: % b\u00e3o h\u00f2a, mg\/L, ppm. D\u1ea3i \u0111o: 0 \u2013 500%, 0 \u2013 50 mg\/L.<\/li>\n
    • \u0110o nhi\u1ec7t \u0111\u1ed9: D\u1ea3i \u0111o: -5 \u0111\u1ebfn 70\u00b0C (D\u1ea3i nhi\u1ec7t \u0111\u1ed9 d\u00f9ng \u0111\u1ec3 b\u00f9 tr\u1eeb chu\u1ea9n \u0111\u00fang gi\u00e1 tr\u1ecb DO (mg\/L): -5 \u0111\u1ebfn 50\u00b0C ). \u0110\u1ed9 ch\u00ednh x\u00e1c: \u00b10.2\u00b0C;<\/li>\n<\/ul>\n<\/td>\n
    		4<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\n<\/tr>\n
    2<\/strong><\/td>\nB\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u RS485 \u2013 Quang<\/strong><\/p>\n
      \n
    • C\u1ed5ng ho\u1ea1t \u0111\u1ed9ng: RS-485\/RS-422<\/li>\n
    • Kho\u1ea3ng c\u00e1ch truy\u1ec1n t\u00edn hi\u1ec7u: RS-485\/RS-422 l\u00e0 1.2 Km (9600bps)<\/li>\n
    • Kho\u1ea3ng c\u00e1ch truy\u1ec1n c\u00e1p quang: C\u00e1c kho\u1ea3ng c\u00e1ch 20km, 40km, 60km, 80km, 100km, 120km (c\u00e1p Single-Mode). \u0110\u1ebfn 2km (C\u00e1p Multi-Mode) t\u00f9y ch\u1ecdn<\/li>\n<\/ul>\n<\/td>\n
    		1<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\n<\/tr>\n
    3<\/strong><\/td>\nB\u1ed9 Switch quang<\/strong><\/p>\n
      \n
    • B\u01b0\u1edbc s\u00f3ng: 1310 nm \u2013 1550 nm. Ngu\u1ed3n \u0111i\u1ec7n: DC 5V \u2013 3A. H\u1ed7 tr\u1ee3 VLAN\/C\u1ed5ng quang SC<\/li>\n
    • \u0110\u00e8n LED ch\u1ec9 th\u1ecb d\u1ec5 d\u00e0ng qu\u1ea3n l\u00fd t\u00ecnh tr\u1ea1ng \u0111\u01b0\u1eddng truy\u1ec1n<\/li>\n
    • Kho\u1ea3ng c\u00e1ch truy\u1ec1n 20 Km<\/li>\n<\/ul>\n<\/td>\n
    		1<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\n<\/tr>\n
    4<\/strong><\/td>\nB\u1ed9 \u0111i\u1ec1u khi\u1ec3n relay t\u1eaft\/m\u1edf qu\u1ea1t t\u1ea1o Oxy<\/strong>B\u1ed9 \u0111i\u1ec1u khi\u1ec3n relay ng\u00f5 ra s\u1ed1 4 k\u00eanh d\u1ea1ng relay, ng\u00f5 v\u00e0o s\u1ed1 4 k\u00eanh h\u1ed7 tr\u1ee3 giao th\u1ee9c Modbus TCP.<\/p>\n

    Th\u00f4ng qua b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111i\u1ec1u khi\u1ec3n t\u1eaft\/m\u1edf qu\u1ea1t t\u1ea1o oxy t\u1ea1i ph\u00f2ng \u0111i\u1ec1u khi\u1ec3n trung t\u00e2m, ho\u1eb7c c\u00e0i \u0111\u1eb7t ng\u01b0\u1ee1ng \u0111\u1ec3 k\u00edch ho\u1ea1t t\u1ef1 \u0111\u1ed9ng.<\/td>\n

    		1<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\n<\/tr>\n
    5<\/strong><\/td>\nPh\u1ea7n m\u1ec1m gi\u00e1m s\u00e1t DO v\u00e0 \u0111i\u1ec1u khi\u1ec3n t\u1eaft\/ m\u1edf qu\u1ea1t t\u1ea1o oxy<\/strong><\/p>\n
      \n
    • Truy\u1ec1n nh\u1eadn, hi\u1ec3n th\u1ecb s\u1ed1 li\u1ec7u \u0111o DO li\u00ean t\u1ee5c theo th\u1eddi gian th\u1ef1c.<\/li>\n
    • Cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng c\u00e0i \u0111\u1eb7t ng\u01b0\u1ee1ng DO \u0111\u1ec3 ph\u00e1t c\u1ea3nh b\u00e1o ho\u1eb7c \u0111i\u1ec1u khi\u1ec1n t\u1eaft\/m\u1edf qu\u1ea1t t\u1ea1o oxy.<\/li>\n<\/ul>\n<\/td>\n
    		1<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\n<\/tr>\n
    6<\/strong><\/td>\nC\u00e1c v\u1eadt t\u01b0 l\u1eafp \u0111\u1eb7t t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng<\/strong><\/p>\n
      \n
    • C\u00e1p quang. \u1ed0ng lu\u1ed3n d\u00e2y c\u00e1p quang.<\/li>\n
    • Relay k\u1ebft n\u1ed1i b\u01a1m<\/li>\n
    • T\u1ee7 \u0111i\u1ec7n<\/li>\n
    • B\u1ed9 chuy\u1ec3n ngu\u1ed3n 12VDC<\/li>\n
    • C\u00e1c v\u1eadt t\u01b0 l\u1eafp \u0111\u1eb7t nh\u1ecf kh\u00e1c: d\u00e2y \u0111i\u1ec7n, CB,\u2026<\/li>\n
    • L\u1ecdc nhi\u1ec5u ngu\u1ed3n \u0111i\u1ec7n (n\u1ebfu c\u1ea7n)<\/li>\n<\/ul>\n<\/td>\n
    		1<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\nLi\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\n<\/tr>\n
    <\/td>\nT\u1ed4NG C\u1ed8NG<\/strong>(D\u1ef1 to\u00e1n cho h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t \u2013 \u0111i\u1ec1u khi\u1ec3n li\u00ean t\u1ee5c g\u1ed3m 04 ao nu\u00f4i)<\/em><\/td>\n<\/td>\n\u00a0Li\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\n\u00a0Li\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n

    [1]<\/a> Oxy h\u00f2a tan: Y\u1ebfu t\u1ed1 cho v\u1ee5 nu\u00f4i th\u00e0nh c\u00f4ng. T\u1ea1p ch\u00ed th\u1ee7y s\u1ea3n Vi\u1ec7t Nam. 06\/07\/2020.<\/p>\n

    [2]<\/a> Oxy \u2013 Ch\u1ec9 ti\u00eau t\u1ed1i quan tr\u1ecdng trong ao nu\u00f4i t\u00f4m th\u1ebb ch\u00e2n tr\u1eafng. VinhthinhBiotadt JSC. 01\/06\/2021.<\/p>\n

    [3]<\/a> Gi\u1ea3i b\u00e0i to\u00e1n ti\u1ebft ki\u1ec7m trong nu\u00f4i t\u00f4m. T\u1ea1p ch\u00ed th\u1ee7y s\u1ea3n vi\u1ec7t nam.<\/p>\n","protected":false},"excerpt":{"rendered":"

    T\u1ea7m quan tr\u1ecdng c\u1ee7a DO v\u00e0 chi ph\u00ed \u0111i\u1ec7n n\u0103ng v\u1eadn h\u00e0nh gu\u1ed3ng qu\u1ea1t n\u01b0\u1edbc ho\u1eb7c thi\u1ebft b\u1ecb s\u1ee5c kh\u00ed trong nu\u00f4i t\u00f4m th\u00e2m canh Trong nu\u00f4i t\u00f4m, duy tr\u00ec h\u00e0m l\u01b0\u1ee3ng oxy h\u00f2a tan tr\u00ean 4 mg\/l (l\u00fd t\u01b0\u1edfng l\u00e0 6-8mg\/l)[1] t\u1ea1i c\u00e1c ao nu\u00f4i l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu quy\u1ebft \u0111\u1ecbnh th\u00e0nh c\u00f4ng. […]\n","protected":false},"author":1,"featured_media":2205,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[107],"tags":[],"acf":[],"lang":"vi","translations":{"vi":2182},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/posts\/2182"}],"collection":[{"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/comments?post=2182"}],"version-history":[{"count":5,"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/posts\/2182\/revisions"}],"predecessor-version":[{"id":2187,"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/posts\/2182\/revisions\/2187"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/media\/2205"}],"wp:attachment":[{"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/media?parent=2182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/categories?post=2182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demo9.thuythu.vn\/reeco\/wp-json\/wp\/v2\/tags?post=2182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}