{"id":16912,"date":"2023-09-25T14:44:42","date_gmt":"2023-09-25T06:44:42","guid":{"rendered":"https:\/\/www.siedontech.com\/?p=16912"},"modified":"2024-03-14T09:31:43","modified_gmt":"2024-03-14T01:31:43","slug":"anaerobic-fermentation-process-of-kitchen-waste","status":"publish","type":"post","link":"https:\/\/www.siedontech.com\/vi\/anaerobic-fermentation-process-of-kitchen-waste.html","title":{"rendered":"Qu\u00e1 tr\u00ecnh l\u00ean men k\u1ef5 kh\u00ed c\u1ee7a r\u00e1c th\u1ea3i nh\u00e0 b\u1ebfp"},"content":{"rendered":"

Quy tr\u00ecnh x\u1eed l\u00fd k\u1ef5 kh\u00ed ch\u1ea5t th\u1ea3i nh\u00e0 b\u1ebfp ch\u1ee7 y\u1ebfu \u0111\u1ec1 c\u1eadp \u0111\u1ebfn qu\u00e1 tr\u00ecnh trong \u0111\u00f3 ch\u1ea5t th\u1ea3i nh\u00e0 b\u1ebfp \u0111\u00e3 qua x\u1eed l\u00fd s\u01a1 b\u1ed9 \u0111\u01b0\u1ee3c l\u00ean men trong m\u1ed9t th\u00f9ng k\u00edn d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a vi khu\u1ea9n k\u1ef5 kh\u00ed \u1edf nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh th\u00f4ng qua c\u00f4ng ngh\u1ec7 l\u00ean men k\u1ef5 kh\u00ed ch\u00edn mu\u1ed3i v\u00e0 \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 s\u1ea3n xu\u1ea5t biogas, v\u00e0 biogas \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t \u0111i\u1ec7n v\u00e0 s\u01b0\u1edfi \u1ea5m th\u00f4ng qua \u0111\u1ed9ng c\u01a1 \u0111\u1ed3ng ph\u00e1t nhi\u1ec7t. B\u00f9n biogas v\u00e0 ch\u1ea5t th\u1ea3i biogas \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t sau qu\u00e1 tr\u00ecnh l\u00ean men c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng l\u00e0m ph\u00e2n b\u00f3n sau khi \u0111\u01b0\u1ee3c x\u1eed l\u00fd v\u00f4 h\u1ea1i v\u00e0 t\u00e1i ch\u1ebf, t\u1eeb \u0111\u00f3 th\u1ef1c hi\u1ec7n vi\u1ec7c gi\u1ea3m thi\u1ec3u v\u00e0 t\u00e1i s\u1eed d\u1ee5ng r\u00e1c th\u1ea3i. L\u1ea5y qu\u00e1 tr\u00ecnh k\u1ef5 kh\u00ed hai giai \u0111o\u1ea1n l\u00e0m v\u00ed d\u1ee5, qu\u00e1 tr\u00ecnh l\u00ean men k\u1ef5 kh\u00ed c\u1ee7a r\u00e1c th\u1ea3i nh\u00e0 b\u1ebfp ch\u1ee7 y\u1ebfu bao g\u1ed3m:<\/p>\n\n\n\n

    \n
  1. X\u1eed l\u00fd s\u01a1 b\u1ed9 ch\u1ea5t th\u1ea3i nh\u00e0 b\u1ebfp<\/li>\n\n\n\n
  2. Qu\u00e1 tr\u00ecnh axit h\u00f3a b\u1eb1ng th\u1ee7y ph\u00e2n<\/li>\n\n\n\n
  3. S\u1ea3n xu\u1ea5t biogas<\/li>\n\n\n\n
  4. X\u1eed l\u00fd v\u00e0 t\u00e1i s\u1eed d\u1ee5ng b\u00f9n biogas, ch\u1ea5t th\u1ea3i biogas v\u00e0 d\u1ea7u th\u1ea3i.<\/li>\n<\/ol>\n\n\n\n
    \"Food<\/figure>\n\n\n\n

    1. X\u1eed l\u00fd s\u01a1 b\u1ed9 ch\u1ea5t th\u1ea3i nh\u00e0 b\u1ebfp<\/h2>\n\n\n\n

    Sau khi r\u00e1c th\u1ea3i nh\u00e0 b\u1ebfp \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n \u0111\u1ebfn khu v\u1ef1c x\u1eed l\u00fd b\u1eb1ng xe thu gom v\u00e0 v\u1eadn chuy\u1ec3n, n\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ed5 v\u00e0o th\u00f9ng ch\u1ee9a r\u00e1c. V\u00ec t\u00fai nh\u1ef1a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thu gom r\u00e1c th\u1ea3i t\u1ea1i c\u00e1c \u0111\u1ecba \u0111i\u1ec3m s\u1ea3n sinh r\u00e1c th\u1ea3i th\u1ef1c ph\u1ea9m nh\u01b0 nh\u00e0 h\u00e0ng, r\u00e1c th\u1ea3i \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o th\u00f9ng ch\u1ee9a s\u1ebd \u0111\u01b0\u1ee3c nghi\u1ec1n nh\u1ecf v\u00e0 ph\u00e1 v\u1ee1 t\u00fai b\u1eb1ng m\u00e1y nghi\u1ec1n. C\u00e1c h\u1ea1t r\u00e1c nghi\u1ec1n c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau t\u00f9y theo y\u00eau c\u1ea7u c\u1ee7a quy tr\u00ecnh, v\u00e0 k\u00edch th\u01b0\u1edbc h\u1ea1t th\u01b0\u1eddng kho\u1ea3ng 10 ~ 20mm. R\u00e1c th\u1ea3i th\u1ef1c ph\u1ea9m \u0111\u01b0\u1ee3c thu gom v\u00e0 v\u1eadn chuy\u1ec3n th\u01b0\u1eddng ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng nh\u1ea5t \u0111\u1ecbnh c\u00e1c ch\u1ea5t g\u00e2y nhi\u1ec5u, nh\u01b0 gi\u1ea5y, kim lo\u1ea1i, x\u01b0\u01a1ng v\u00e0 c\u00e1c ch\u1ea5t kh\u00e1c. C\u00e1c ch\u1ea5t n\u00e0y kh\u00f4ng th\u1ec3 ph\u00e2n h\u1ee7y trong qu\u00e1 tr\u00ecnh l\u00ean men k\u1ef5 kh\u00ed, do \u0111\u00f3 c\u00e1c t\u1ea1p ch\u1ea5t c\u1ea7n \u0111\u01b0\u1ee3c l\u1ecdc ra b\u1eb1ng M\u00e1y th\u00e1o bao b\u00ec th\u1ef1c ph\u1ea9m<\/a><\/strong> Trong giai \u0111o\u1ea1n ti\u1ec1n x\u1eed l\u00fd, v\u00e0 h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t h\u1eefu c\u01a1 sau khi t\u00e1ch c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn 99%.<\/p>\n\n\n\n

    Cu\u1ed1i c\u00f9ng, c\u00e1c t\u1ea1p ch\u1ea5t ho\u1eb7c ch\u1ea5t h\u1eefu c\u01a1 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00e1ch ra c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o qu\u00e1 tr\u00ecnh t\u00e1ch r\u1eafn-l\u1ecfng. Qua qu\u00e1 tr\u00ecnh x\u1eed l\u00fd ch\u1ea5t th\u1ea3i M\u00e1y t\u00e1ch n\u01b0\u1edbc<\/strong><\/a>M\u1ed9t ph\u1ea7n c\u00e1c ch\u1ea5t r\u1eafn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1ch ra kh\u1ecfi r\u00e1c th\u1ea3i, v\u00e0 ch\u1ec9 c\u00e1c ch\u1ea5t ph\u00e2n h\u1ee7y \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o ph\u1ea3n \u1ee9ng, t\u1eeb \u0111\u00f3 n\u00e2ng cao hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ec3 l\u00ean men k\u1ef5 kh\u00ed, \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t kh\u00ed, v\u00e0 \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 v\u00e0 \u1ed5n \u0111\u1ecbnh c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng l\u00ean men k\u1ef5 kh\u00ed.<\/p>\n\n\n\n

    \"Anaerobic<\/figure>\n\n\n\n

    2. Axit h\u00f3a th\u1ee7y ph\u00e2n<\/h2>\n\n\n\n

    R\u00e1c th\u1ea3i nh\u00e0 b\u1ebfp \u0111\u00e3 qua x\u1eed l\u00fd s\u01a1 b\u1ed9 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o b\u1ec3 th\u1ee7y ph\u00e2n v\u00e0 axit h\u00f3a \u0111\u1ec3 th\u1ef1c hi\u1ec7n qu\u00e1 tr\u00ecnh th\u1ee7y ph\u00e2n v\u00e0 axit h\u00f3a. Tr\u01b0\u1edbc \u0111\u00f3, c\u00f3 th\u1ec3 b\u1ed1 tr\u00ed thi\u1ebft b\u1ecb trao \u0111\u1ed5i nhi\u1ec7t \u0111\u1ec3 n\u00e2ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a r\u00e1c th\u1ea3i trong qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n qua \u1ed1ng d\u1eabn, \u0111\u1ea3m b\u1ea3o \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 y\u00eau c\u1ea7u cho qu\u00e1 tr\u00ecnh th\u1ee7y ph\u00e2n v\u00e0 axit h\u00f3a, t\u1eeb \u0111\u00f3 tr\u00e1nh s\u1ef1 dao \u0111\u1ed9ng l\u1edbn v\u1ec1 nhi\u1ec7t \u0111\u1ed9 trong ph\u1ea3n \u1ee9ng.<\/p>\n\n\n\n

    D\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u01b0\u1edbc v\u00e0 vi khu\u1ea9n ph\u00e2n h\u1ee7y axit trong ph\u1ea3n \u1ee9ng, r\u00e1c th\u1ea3i h\u1eefu c\u01a1 d\u1ea7n \u0111\u01b0\u1ee3c chuy\u1ec3n h\u00f3a t\u1eeb c\u00e1c ch\u1ea5t h\u1eefu c\u01a1 c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn v\u00e0 ph\u00e2n t\u1eed l\u1edbn th\u00e0nh c\u00e1c axit h\u1eefu c\u01a1 ph\u00e2n t\u1eed nh\u1ecf, \u0111\u1ed3ng th\u1eddi c\u00e1c kh\u00ed nh\u01b0 carbon dioxide, hydro, hydro sunfua v\u00e0 c\u00e1c kh\u00ed t\u01b0\u01a1ng t\u1ef1 \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng. C\u00e1c axit h\u1eefu c\u01a1 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t trong giai \u0111o\u1ea1n th\u1ee7y ph\u00e2n v\u00e0 axit h\u00f3a ch\u1ee7 y\u1ebfu l\u00e0 axit axetic, axit propionic v\u00e0 axit butyric. Do qu\u00e1 tr\u00ecnh th\u1ee7y ph\u00e2n v\u00e0 axit h\u00f3a di\u1ec5n ra nhanh ch\u00f3ng, m\u00f4i tr\u01b0\u1eddng axit \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh nhanh ch\u00f3ng trong b\u1ec3 ph\u1ea3n \u1ee9ng, t\u1ee9c l\u00e0 gi\u00e1 tr\u1ecb pH gi\u1ea3m xu\u1ed1ng. M\u1eb7c d\u00f9 kh\u1ea3 n\u0103ng ch\u1ecbu axit c\u1ee7a vi khu\u1ea9n th\u1ee7y ph\u00e2n v\u00e0 axit h\u00f3a r\u1ea5t t\u1ed1t, nh\u01b0ng khi gi\u00e1 tr\u1ecb pH qu\u00e1 th\u1ea5p, vi khu\u1ea9n v\u1eabn b\u1ecb \u1ee9c ch\u1ebf, d\u1eabn \u0111\u1ebfn hi\u1ec7u qu\u1ea3 ph\u00e2n h\u1ee7y th\u1ea5p.<\/p>\n\n\n\n

    \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u00f3 th\u1ec3 th\u00eam c\u00e1c ch\u1ea5t ki\u1ec1m v\u00e0o b\u1ec3 ph\u1ea3n \u1ee9ng \u0111\u1ec3 trung h\u00f2a, nh\u01b0ng vi\u1ec7c th\u00eam c\u00e1c ch\u1ea5t ki\u1ec1m s\u1ebd l\u00e0m t\u0103ng \u0111\u1ed9 m\u1eb7n, \u0111i\u1ec1u n\u00e0y s\u1ebd c\u00f3 t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c \u0111\u1ebfn qu\u00e1 tr\u00ecnh l\u00ean men k\u1ef5 kh\u00ed v\u00e0 x\u1eed l\u00fd b\u00f9n biogas. Ngo\u00e0i ra, \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 pH qu\u00e1 th\u1ea5p, n\u01b0\u1edbc tu\u1ea7n ho\u00e0n c\u00f3 pH cao h\u01a1n (kho\u1ea3ng 8) c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 trung h\u00f2a. Vi\u1ec7c s\u1eed d\u1ee5ng n\u01b0\u1edbc tu\u1ea7n ho\u00e0n c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft m\u1ed9t ph\u1ea7n v\u1ea5n \u0111\u1ec1 x\u1eed l\u00fd b\u00f9n biogas sau qu\u00e1 tr\u00ecnh l\u00ean men v\u00e0 th\u1ef1c hi\u1ec7n vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng c\u00e1c ch\u1ea5t trong nh\u00e0 m\u00e1y l\u00ean men k\u1ef5 kh\u00ed. \u0110\u1ed3ng th\u1eddi, vi\u1ec7c s\u1eed d\u1ee5ng n\u01b0\u1edbc tu\u1ea7n ho\u00e0n c\u0169ng c\u00f3 th\u1ec3 b\u1ed5 sung m\u1ed9t ph\u1ea7n ch\u1ea5t dinh d\u01b0\u1ee1ng v\u00e0 kim lo\u1ea1i hi\u1ebfm cho vi khu\u1ea9n k\u1ef5 kh\u00ed s\u1eed d\u1ee5ng, nh\u1eb1m tr\u00e1nh s\u1ef1 suy gi\u1ea3m ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c th\u1eadm ch\u00ed ch\u1ebft c\u1ee7a vi khu\u1ea9n do thi\u1ebfu dinh d\u01b0\u1ee1ng.<\/p>\n\n\n\n

    Kh\u00ed \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t trong giai \u0111o\u1ea1n axit h\u00f3a th\u1ee7y ph\u00e2n ch\u1ee9a hydro sunfua, kh\u00f4ng th\u1ec3 x\u1ea3 tr\u1ef1c ti\u1ebfp v\u00e0o kh\u00f4ng kh\u00ed. Sau khi x\u1eed l\u00fd kh\u1eed l\u01b0u hu\u1ef3nh, kh\u00ed c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1ea3 tr\u1ef1c ti\u1ebfp ho\u1eb7c s\u1eed d\u1ee5ng cho c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c.<\/p>\n\n\n\n

    Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a giai \u0111o\u1ea1n axit h\u00f3a th\u1ee7y ph\u00e2n th\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong kho\u1ea3ng t\u1eeb 25\u00b0C \u0111\u1ebfn 35\u00b0C v\u00e0 kh\u00f4ng thay \u0111\u1ed5i theo s\u1ef1 bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u1ee7a giai \u0111o\u1ea1n methanogen. Vi\u1ec7c duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 trong ph\u1ea3n \u1ee9ng vi\u00ean c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng nhi\u1ec7t sinh ra sau qu\u00e1 tr\u00ecnh \u0111\u1ed3ng ph\u00e1t \u0111i\u1ec7n t\u1eeb \u0111i\u1ec3m n\u00f3ng biogas.<\/p>\n\n\n\n

    \"Hydrolytic<\/figure>\n\n\n\n

    3. S\u1ea3n xu\u1ea5t metan<\/h2>\n\n\n\n

    Giai \u0111o\u1ea1n s\u1ea3n xu\u1ea5t metan, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 giai \u0111o\u1ea1n s\u1ea3n xu\u1ea5t kh\u00ed, l\u00e0 giai \u0111o\u1ea1n ch\u00ednh c\u1ee7a qu\u00e1 tr\u00ecnh l\u00ean men k\u1ef5 kh\u00ed, v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m ch\u00ednh c\u1ee7a qu\u00e1 tr\u00ecnh l\u00ean men k\u1ef5 kh\u00ed \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb giai \u0111o\u1ea1n n\u00e0y. Do \u0111\u00f3, vi\u1ec7c ki\u1ec3m so\u00e1t giai \u0111o\u1ea1n n\u00e0y l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 ki\u1ec3m so\u00e1t to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh x\u1eed l\u00fd k\u1ef5 kh\u00ed.<\/p>\n\n\n\n

    C\u00e1c s\u1ea3n ph\u1ea9m trong giai \u0111o\u1ea1n axit h\u00f3a th\u1ee7y ph\u00e2n, nh\u01b0 axit h\u1eefu c\u01a1, hydro h\u00f2a tan trong dung d\u1ecbch v\u00e0 kh\u00ed carbon dioxide, \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n v\u00e0o b\u1ec3 s\u1ea3n xu\u1ea5t metan qua c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng. T\u1ea1i \u0111\u00e2y, axit h\u1eefu c\u01a1 v\u00e0 kh\u00ed \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i ti\u1ebfp th\u00e0nh kh\u00ed metan v\u00e0 kh\u00ed carbon dioxide trong ph\u1ea3n \u1ee9ng. Do kh\u00ed hydro sunfua \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng trong giai \u0111o\u1ea1n axit h\u00f3a th\u1ee7y ph\u00e2n, l\u01b0\u1ee3ng kh\u00ed hydro sunfua \u0111\u01b0\u1ee3c t\u1ea1o ra trong giai \u0111o\u1ea1n s\u1ea3n xu\u1ea5t metan r\u1ea5t nh\u1ecf v\u00e0 g\u1ea7n nh\u01b0 c\u00f3 th\u1ec3 b\u1ecf qua.<\/p>\n\n\n\n

    V\u00ec v\u1eadt li\u1ec7u \u0111\u01b0a v\u00e0o b\u1ec3 s\u1ea3n xu\u1ea5t metan l\u00e0 axit h\u1eefu c\u01a1 sau qu\u00e1 tr\u00ecnh th\u1ee7y ph\u00e2n v\u00e0 axit h\u00f3a, b\u1ec3 ph\u1ea3n \u1ee9ng c\u00f3 th\u1ec3 th\u00edch \u1ee9ng v\u1edbi t\u1ea3i l\u01b0\u1ee3ng h\u1eefu c\u01a1 cao h\u01a1n v\u00e0 r\u00fat ng\u1eafn th\u1eddi gian l\u01b0u c\u1ee7a v\u1eadt li\u1ec7u. Theo kinh nghi\u1ec7m hi\u1ec7n c\u00f3 \u1edf n\u01b0\u1edbc ngo\u00e0i, t\u1ea3i l\u01b0\u1ee3ng h\u1eefu c\u01a1 c\u1ee7a ph\u1ea3n \u1ee9ng th\u01b0\u1eddng l\u00e0 3 \u2013 4,5 kg oTS\/m\u00b3\/ng\u00e0y. S\u1ea3n l\u01b0\u1ee3ng biogas c\u00f3 th\u1ec3 duy tr\u00ec trong kho\u1ea3ng 700 \u2013 900 L\/kg oTS, v\u00e0 n\u1ed3ng \u0111\u1ed9 metan trong biogas n\u1eb1m trong kho\u1ea3ng 60% \u0111\u1ebfn 75%.<\/p>\n\n\n\n

    C\u00f3 nhi\u1ec1u y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh l\u00ean men k\u1ef5 kh\u00ed, ch\u1eb3ng h\u1ea1n nh\u01b0 nhi\u1ec7t \u0111\u1ed9, gi\u00e1 tr\u1ecb pH trong b\u1ec3 ph\u1ea3n \u1ee9ng, t\u1ef7 l\u1ec7 carbon tr\u00ean nit\u01a1 trong ch\u1ea5t th\u1ea3i \u0111\u1ea7u v\u00e0o, v.v. Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y k\u1ef5 kh\u00ed.<\/p>\n\n\n\n

    4. X\u1eed l\u00fd v\u00e0 t\u00e1i s\u1eed d\u1ee5ng b\u00f9n biogas, ch\u1ea5t th\u1ea3i biogas v\u00e0 d\u1ea7u th\u1ea3i.<\/h2>\n\n\n\n

    C\u00e1c s\u1ea3n ph\u1ea9m c\u00f2n l\u1ea1i sau qu\u00e1 tr\u00ecnh l\u00ean men k\u1ef5 kh\u00ed v\u1eabn c\u00f3 h\u00e0m l\u01b0\u1ee3ng n\u01b0\u1edbc cao sau khi ra kh\u1ecfi b\u1ec3 l\u00ean men v\u00e0 kh\u00f4ng th\u1ec3 ch\u00f4n l\u1ea5p tr\u1ef1c ti\u1ebfp, m\u00e0 c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c t\u00e1ch n\u01b0\u1edbc tr\u01b0\u1edbc. Sau khi t\u00e1ch n\u01b0\u1edbc b\u1eb1ng ly t\u00e2m, c\u00e1c ch\u1ea5t th\u1ea3i l\u00ean men s\u1ebd t\u1ea1o ra b\u00f9n biogas v\u00e0 ch\u1ea5t th\u1ea3i biogas. B\u00f9n biogas v\u00e0 ch\u1ea5t th\u1ea3i biogas gi\u00e0u nit\u01a1, ph\u1ed1t pho, kali, c\u00e1c nguy\u00ean t\u1ed1 vi l\u01b0\u1ee3ng v\u00e0 c\u00e1c ch\u1ea5t dinh d\u01b0\u1ee1ng kh\u00e1c m\u00e0 c\u00e2y tr\u1ed3ng c\u1ea7n, v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ph\u00e2n b\u00f3n h\u1eefu c\u01a1.<\/p>\n\n\n\n

    Ch\u1ea5t b\u00e9o trong r\u00e1c th\u1ea3i nh\u00e0 b\u1ebfp th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00e1ch kh\u1ecfi r\u00e1c th\u1ea3i th\u00f4ng qua qu\u00e1 tr\u00ecnh t\u00e1ch d\u1ea7u-n\u01b0\u1edbc \u1edf giai \u0111o\u1ea1n ti\u1ec1n x\u1eed l\u00fd. C\u00e1c lo\u1ea1i d\u1ea7u v\u00e0 ch\u1ea5t b\u00e9o n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh biodiesel ho\u1eb7c c\u00e1c nguy\u00ean li\u1ec7u th\u00f4 c\u00f4ng nghi\u1ec7p h\u00f3a h\u1ecdc kh\u00e1c c\u00f9ng v\u1edbi d\u1ea7u th\u1ea3i t\u00e1i ch\u1ebf v\u00e0 d\u1ea7u \u0103n th\u1ea3i b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc ho\u1eb7c sinh h\u1ecdc, t\u1eeb \u0111\u00f3 mang l\u1ea1i l\u1ee3i \u00edch kinh t\u1ebf cao h\u01a1n. Th\u00f4ng qua qu\u00e1 tr\u00ecnh t\u00e1ch, x\u1eed l\u00fd v\u00e0 t\u1eadn d\u1ee5ng m\u1ee1, ph\u00e1t minh n\u00e0y kh\u00f4ng ch\u1ec9 th\u1ef1c hi\u1ec7n vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean r\u00e1c th\u1ea3i v\u00e0 t\u1ea1o ra l\u1ee3i nhu\u1eadn kinh t\u1ebf t\u1ed1t h\u01a1n, m\u00e0 c\u00f2n c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf vi\u1ec7c s\u1ea3n xu\u1ea5t \"d\u1ea7u c\u1ed1ng\" t\u1eeb ngu\u1ed3n g\u1ed1c, khi\u1ebfn \"d\u1ea7u c\u1ed1ng\" kh\u00f4ng quay tr\u1edf l\u1ea1i b\u00e0n \u0103n c\u1ee7a con ng\u01b0\u1eddi, t\u1eeb \u0111\u00f3 \u0111\u1ea3m b\u1ea3o an to\u00e0n th\u1ef1c ph\u1ea9m v\u00e0 tr\u00e1nh g\u00e2y h\u1ea1i cho s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi.<\/p>","protected":false},"excerpt":{"rendered":"

    The anaerobic treatment process of kitchen waste mainly refers to the process in which the pretreated kitchen waste is fermented in a closed container under the action of anaerobic bacteria at a certain temperature through a mature and stable anaerobic fermentation technology to produce biogas, and the biogas is used to generate electricity and heat […]<\/p>\n","protected":false},"author":5,"featured_media":16874,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[30],"tags":[265,233],"_links":{"self":[{"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/posts\/16912"}],"collection":[{"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/comments?post=16912"}],"version-history":[{"count":0,"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/posts\/16912\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/media\/16874"}],"wp:attachment":[{"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/media?parent=16912"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/categories?post=16912"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.siedontech.com\/vi\/wp-json\/wp\/v2\/tags?post=16912"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}