{"id":2432,"date":"2026-10-08T08:42:05","date_gmt":"2026-10-08T01:42:05","guid":{"rendered":"https:\/\/ewatervietnam.vn\/?p=2432"},"modified":"2026-10-08T08:42:05","modified_gmt":"2026-10-08T01:42:05","slug":"nuoc-gieng-khoan-co-mau-vang","status":"publish","type":"post","link":"http:\/\/ewatervietnam.vn\/2026\/10\/08\/nuoc-gieng-khoan-co-mau-vang\/","title":{"rendered":"N\u01b0\u1edbc gi\u1ebfng khoan c\u00f3 m\u00e0u v\u00e0ng, m\u00f9i tanh: C\u00e1ch x\u1eed l\u00fd"},"content":{"rendered":"

N\u01b0\u1edbc gi\u1ebfng khoan c\u00f3 m\u00e0u v\u00e0ng, m\u00f9i tanh: Nguy\u00ean nh\u00e2n v\u00e0 c\u00e1ch x\u1eed l\u00fd<\/h1>\n

N\u01b0\u1edbc gi\u1ebfng khoan b\u1ecb v\u00e0ng v\u00e0 c\u00f3 m\u00f9i tanh l\u00e0 t\u00ecnh tr\u1ea1ng kh\u00e1 ph\u1ed5 bi\u1ebfn. N\u01b0\u1edbc c\u00f3 th\u1ec3 trong khi v\u1eeba b\u01a1m l\u00ean. Sau m\u1ed9t l\u00fac, n\u01b0\u1edbc chuy\u1ec3n sang v\u00e0ng ho\u1eb7c n\u00e2u. M\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p c\u00f2n xu\u1ea5t hi\u1ec7n c\u1eb7n d\u01b0\u1edbi \u0111\u00e1y. Nguy\u00ean nh\u00e2n th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn s\u1eaft, mangan ho\u1eb7c c\u00e1c ch\u1ea5t kh\u00e1c trong ngu\u1ed3n n\u01b0\u1edbc ng\u1ea7m. V\u00ec v\u1eady, c\u1ea7n x\u00e1c \u0111\u1ecbnh \u0111\u00fang nguy\u00ean nh\u00e2n tr\u01b0\u1edbc khi ch\u1ecdn ph\u01b0\u01a1ng \u00e1n x\u1eed l\u00fd.<\/p>\n

V\u00ec sao n\u01b0\u1edbc gi\u1ebfng khoan c\u00f3 m\u00e0u v\u00e0ng?<\/h2>\n

\"N\u01b0\u1edbc<\/p>\n

M\u1ed9t nguy\u00ean nh\u00e2n th\u01b0\u1eddng g\u1eb7p l\u00e0 h\u00e0m l\u01b0\u1ee3ng s\u1eaft trong n\u01b0\u1edbc cao. S\u1eaft c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i \u1edf d\u1ea1ng h\u00f2a tan trong n\u01b0\u1edbc ng\u1ea7m. Khi n\u01b0\u1edbc ti\u1ebfp x\u00fac v\u1edbi kh\u00f4ng kh\u00ed, s\u1eaft b\u1ecb oxy h\u00f3a. L\u00fac n\u00e0y, n\u01b0\u1edbc c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n m\u00e0u v\u00e0ng n\u00e2u ho\u1eb7c m\u00e0u g\u1ec9 s\u1eaft. C\u1eb7n s\u1eaft c\u0169ng c\u00f3 th\u1ec3 b\u00e1m l\u00ean b\u1ed3n ch\u1ee9a, v\u00f2i n\u01b0\u1edbc v\u00e0 thi\u1ebft b\u1ecb v\u1ec7 sinh.<\/p>\n

Mangan c\u0169ng c\u00f3 th\u1ec3 l\u00e0m n\u01b0\u1edbc \u0111\u1ed5i m\u00e0u. Khi b\u1ecb oxy h\u00f3a, mangan th\u01b0\u1eddng t\u1ea1o c\u1eb7n m\u00e0u n\u00e2u ho\u1eb7c \u0111en. Ngu\u1ed3n n\u01b0\u1edbc c\u00f3 mangan cao c\u00f2n c\u00f3 th\u1ec3 g\u00e2y v\u1ecb kim lo\u1ea1i. C\u1eb7n c\u0169ng d\u1ec5 b\u00e1m v\u00e0o \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 thi\u1ebft b\u1ecb trong gia \u0111\u00ecnh.<\/p>\n

N\u01b0\u1edbc gi\u1ebfng c\u00f3 m\u00f9i tanh do \u0111\u00e2u?<\/h2>\n

M\u00f9i tanh th\u01b0\u1eddng khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng ngh\u0129 ngay \u0111\u1ebfn s\u1eaft. Tuy nhi\u00ean, \u0111\u00e2y kh\u00f4ng ph\u1ea3i nguy\u00ean nh\u00e2n duy nh\u1ea5t. N\u01b0\u1edbc gi\u1ebfng c\u00f3 th\u1ec3 c\u00f3 m\u00f9i do hydro sulfide. Ch\u1ea5t n\u00e0y th\u01b0\u1eddng t\u1ea1o m\u00f9i gi\u1ed1ng tr\u1ee9ng th\u1ed1i. M\u1ed9t s\u1ed1 lo\u1ea1i vi khu\u1ea9n trong h\u1ec7 th\u1ed1ng n\u01b0\u1edbc c\u0169ng c\u00f3 th\u1ec3 g\u00e2y m\u00f9i kh\u00f3 ch\u1ecbu.<\/p>\n

Ngo\u00e0i ra, n\u01b0\u1edbc ng\u1ea7m c\u00f2n c\u00f3 th\u1ec3 ch\u1ee9a nhi\u1ec1u ch\u1ea5t h\u00f2a tan kh\u00e1c. Ngu\u1ed3n n\u01b0\u1edbc g\u1ea7n khu v\u1ef1c s\u1ea3n xu\u1ea5t ho\u1eb7c n\u00f4ng nghi\u1ec7p c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m tra k\u1ef9. Kh\u00f4ng n\u00ean ch\u1ec9 d\u1ef1a v\u00e0o m\u00e0u v\u00e0 m\u00f9i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u1ea5t \u00f4 nhi\u1ec5m. M\u1ed9t s\u1ed1 ch\u1ea5t ch\u1ec9 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n b\u1eb1ng x\u00e9t nghi\u1ec7m n\u01b0\u1edbc.<\/p>\n

N\u01b0\u1edbc gi\u1ebfng v\u00e0ng c\u00f3 d\u00f9ng \u0111\u01b0\u1ee3c kh\u00f4ng?<\/h2>\n

Kh\u00f4ng n\u00ean d\u00f9ng n\u01b0\u1edbc gi\u1ebfng c\u00f3 m\u00e0u ho\u1eb7c m\u00f9i b\u1ea5t th\u01b0\u1eddng \u0111\u1ec3 u\u1ed1ng tr\u1ef1c ti\u1ebfp. M\u00e0u v\u00e0ng c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn s\u1eaft ho\u1eb7c mangan. M\u00f9i l\u1ea1 c\u0169ng c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau. V\u00ec v\u1eady, c\u1ea7n ki\u1ec3m tra ngu\u1ed3n n\u01b0\u1edbc tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng cho \u0103n u\u1ed1ng.<\/p>\n

EPA c\u0169ng khuy\u1ebfn ngh\u1ecb ki\u1ec3m tra n\u01b0\u1edbc gi\u1ebfng khi m\u00e0u, m\u00f9i ho\u1eb7c \u0111\u1ed9 trong c\u1ee7a n\u01b0\u1edbc thay \u0111\u1ed5i. Vi\u1ec7c x\u00e9t nghi\u1ec7m gi\u00fap x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c ch\u1ea5t c\u1ea7n x\u1eed l\u00fd. \u0110\u00e2y l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng tr\u01b0\u1edbc khi l\u1ef1a ch\u1ecdn h\u1ec7 th\u1ed1ng l\u1ecdc.<\/p>\n

C\u00e1ch x\u1eed l\u00fd n\u01b0\u1edbc gi\u1ebfng khoan b\u1ecb v\u00e0ng<\/h2>\n

C\u00e1ch x\u1eed l\u00fd ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc \u0111\u1ea7u v\u00e0o. V\u1edbi n\u01b0\u1edbc c\u00f3 s\u1eaft v\u00e0 mangan, m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn l\u00e0 oxy h\u00f3a r\u1ed3i l\u1ecdc. Qu\u00e1 tr\u00ecnh n\u00e0y gi\u00fap chuy\u1ec3n c\u00e1c ch\u1ea5t h\u00f2a tan th\u00e0nh d\u1ea1ng d\u1ec5 t\u00e1ch h\u01a1n. Sau \u0111\u00f3, v\u1eadt li\u1ec7u l\u1ecdc s\u1ebd gi\u1eef l\u1ea1i ph\u1ea7n c\u1eb7n.<\/p>\n

H\u1ec7 th\u1ed1ng x\u1eed l\u00fd c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p nhi\u1ec1u v\u1eadt li\u1ec7u kh\u00e1c nhau. C\u00e1t l\u1ecdc, s\u1ecfi v\u00e0 v\u1eadt li\u1ec7u kh\u1eed s\u1eaft l\u00e0 nh\u1eefng l\u1ef1a ch\u1ecdn th\u01b0\u1eddng g\u1eb7p. Than ho\u1ea1t t\u00ednh c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 gi\u1ea3m m\u1ed9t s\u1ed1 m\u00f9i v\u00e0 ch\u1ea5t g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u00e0u n\u01b0\u1edbc. Tuy nhi\u00ean, than ho\u1ea1t t\u00ednh kh\u00f4ng ph\u1ea3i gi\u1ea3i ph\u00e1p cho m\u1ecdi lo\u1ea1i \u00f4 nhi\u1ec5m.<\/p>\n

C\u00f3 n\u00ean d\u00f9ng b\u1ec3 l\u1ecdc n\u01b0\u1edbc gi\u1ebfng khoan?<\/h2>\n

\"6<\/p>\n

V\u1edbi n\u01b0\u1edbc gi\u1ebfng c\u00f3 nhi\u1ec1u s\u1eaft v\u00e0 c\u1eb7n, b\u1ec3 l\u1ecdc \u0111\u1ea7u ngu\u1ed3n c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ph\u01b0\u01a1ng \u00e1n. H\u1ec7 th\u1ed1ng th\u01b0\u1eddng c\u00f3 nhi\u1ec1u l\u1edbp v\u1eadt li\u1ec7u l\u1ecdc. N\u01b0\u1edbc \u0111\u01b0\u1ee3c x\u1eed l\u00fd tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o \u0111\u01b0\u1eddng \u1ed1ng s\u1eed d\u1ee5ng. Ph\u01b0\u01a1ng \u00e1n n\u00e0y ph\u00f9 h\u1ee3p khi c\u1ea7n x\u1eed l\u00fd l\u01b0\u1ee3ng n\u01b0\u1edbc l\u1edbn cho c\u1ea3 gia \u0111\u00ecnh.<\/p>\n

M\u1ed9t nghi\u00ean c\u1ee9u v\u1ec1 x\u1eed l\u00fd n\u01b0\u1edbc ng\u1ea7m t\u1ea1i c\u00e1c h\u1ed9 gia \u0111\u00ecnh \u1edf Vi\u1ec7t Nam c\u0169ng \u0111\u00e3 th\u1eed nghi\u1ec7m h\u1ec7 th\u1ed1ng g\u1ed3m s\u1ecfi, c\u00e1t, than ho\u1ea1t t\u00ednh v\u00e0 v\u1eadt li\u1ec7u mangan. K\u1ebft qu\u1ea3 cho th\u1ea5y m\u00f4 h\u00ecnh c\u00f3 kh\u1ea3 n\u0103ng gi\u1ea3m s\u1eaft v\u00e0 mangan trong n\u01b0\u1edbc.<\/p>\n

Khi n\u00e0o n\u00ean d\u00f9ng m\u00e1y l\u1ecdc n\u01b0\u1edbc RO?<\/h2>\n

L\u1ecdc \u0111\u1ea7u ngu\u1ed3n v\u00e0 m\u00e1y RO c\u00f3 vai tr\u00f2 kh\u00e1c nhau. L\u1ecdc \u0111\u1ea7u ngu\u1ed3n th\u01b0\u1eddng x\u1eed l\u00fd n\u01b0\u1edbc tr\u01b0\u1edbc khi c\u1ea5p v\u00e0o h\u1ec7 th\u1ed1ng sinh ho\u1ea1t. M\u00e1y RO th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng cho ngu\u1ed3n n\u01b0\u1edbc c\u1ea7n x\u1eed l\u00fd s\u00e2u h\u01a1n t\u1ea1i \u0111i\u1ec3m s\u1eed d\u1ee5ng.<\/p>\n

N\u1ebfu mu\u1ed1n d\u00f9ng n\u01b0\u1edbc gi\u1ebfng \u0111\u1ec3 u\u1ed1ng, kh\u00f4ng n\u00ean ch\u1ec9 l\u1eafp m\u1ed9t l\u00f5i l\u1ecdc \u0111\u01a1n. C\u1ea7n x\u00e1c \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc \u0111\u1ea7u v\u00e0o tr\u01b0\u1edbc. Sau \u0111\u00f3 m\u1edbi l\u1ef1a ch\u1ecdn c\u1ea5u h\u00ecnh ph\u00f9 h\u1ee3p. V\u1edbi ngu\u1ed3n n\u01b0\u1edbc ph\u1ee9c t\u1ea1p, c\u00f3 th\u1ec3 c\u1ea7n k\u1ebft h\u1ee3p ti\u1ec1n x\u1eed l\u00fd v\u00e0 RO.<\/p>\n

C\u00f3 c\u1ea7n x\u00e9t nghi\u1ec7m n\u01b0\u1edbc gi\u1ebfng tr\u01b0\u1edbc khi l\u1eafp m\u00e1y?<\/h2>\n

C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 n\u00ean<\/strong>. \u0110\u00e2y l\u00e0 b\u01b0\u1edbc gi\u00fap tr\u00e1nh ch\u1ecdn sai h\u1ec7 th\u1ed1ng l\u1ecdc. M\u1ed7i ngu\u1ed3n n\u01b0\u1edbc c\u00f3 th\u00e0nh ph\u1ea7n kh\u00e1c nhau. N\u01b0\u1edbc c\u00f3 th\u1ec3 g\u1eb7p s\u1eaft, mangan, \u0111\u1ed9 c\u1ee9ng, amoni, vi sinh ho\u1eb7c nhi\u1ec1u ch\u1ea5t kh\u00e1c.<\/p>\n

Khi n\u01b0\u1edbc c\u00f3 m\u00e0u, m\u00f9i ho\u1eb7c v\u1ecb b\u1ea5t th\u01b0\u1eddng, n\u00ean l\u1ea5y m\u1eabu \u0111\u1ec3 x\u00e9t nghi\u1ec7m. K\u1ebft qu\u1ea3 s\u1ebd gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c ch\u1ec9 ti\u00eau c\u1ea7n x\u1eed l\u00fd. T\u1eeb \u0111\u00f3, \u0111\u01a1n v\u1ecb k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p h\u01a1n.<\/p>\n

X\u1eed l\u00fd n\u01b0\u1edbc gi\u1ebfng khoan c\u1ea7n l\u00e0m theo t\u1eebng b\u01b0\u1edbc<\/h2>\n

\"\"<\/p>\n

Tr\u01b0\u1edbc ti\u00ean, c\u1ea7n ki\u1ec3m tra ngu\u1ed3n n\u01b0\u1edbc. Ti\u1ebfp theo, x\u00e1c \u0111\u1ecbnh c\u00e1c ch\u1ec9 ti\u00eau c\u1ea7n x\u1eed l\u00fd. N\u1ebfu n\u01b0\u1edbc c\u00f3 s\u1eaft v\u00e0 mangan, c\u00f3 th\u1ec3 xem x\u00e9t ph\u01b0\u01a1ng \u00e1n oxy h\u00f3a v\u00e0 l\u1ecdc. N\u1ebfu c\u00f3 m\u00f9i, c\u1ea7n t\u00ecm \u0111\u00fang nguy\u00ean nh\u00e2n tr\u01b0\u1edbc khi ch\u1ecdn v\u1eadt li\u1ec7u.<\/p>\n

Sau b\u01b0\u1edbc ti\u1ec1n x\u1eed l\u00fd, n\u01b0\u1edbc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o h\u1ec7 th\u1ed1ng l\u1ecdc tinh. V\u1edbi nhu c\u1ea7u u\u1ed1ng tr\u1ef1c ti\u1ebfp, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u00eam m\u00e1y l\u1ecdc RO ph\u00f9 h\u1ee3p. C\u1ea5u h\u00ecnh cu\u1ed1i c\u00f9ng n\u00ean d\u1ef1a tr\u00ean k\u1ebft qu\u1ea3 x\u00e9t nghi\u1ec7m v\u00e0 nhu c\u1ea7u s\u1eed d\u1ee5ng.<\/p>\n

EWATER c\u00f3 gi\u1ea3i ph\u00e1p cho n\u01b0\u1edbc gi\u1ebfng khoan<\/h2>\n

V\u1edbi ngu\u1ed3n n\u01b0\u1edbc gi\u1ebfng khoan, EWATER c\u00f3 th\u1ec3 tri\u1ec3n khai theo t\u1eebng nhu c\u1ea7u. N\u01b0\u1edbc sinh ho\u1ea1t c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng l\u1ecdc t\u1ed5ng \u0111\u1ea7u ngu\u1ed3n. N\u01b0\u1edbc u\u1ed1ng c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p th\u00eam m\u00e1y l\u1ecdc RO. C\u00e1ch l\u00e0m n\u00e0y gi\u00fap ph\u00e2n chia r\u00f5 m\u1ee5c ti\u00eau x\u1eed l\u00fd.<\/p>\n

\u0110i\u1ec1u quan tr\u1ecdng l\u00e0 kh\u00f4ng n\u00ean ch\u1ecdn m\u00e1y ch\u1ec9 d\u1ef1a v\u00e0o m\u00e0u n\u01b0\u1edbc. C\u1ea7n bi\u1ebft n\u01b0\u1edbc \u0111ang g\u1eb7p v\u1ea5n \u0111\u1ec1 g\u00ec. T\u1eeb \u0111\u00f3 m\u1edbi ch\u1ecdn \u0111\u00fang v\u1eadt li\u1ec7u l\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 x\u1eed l\u00fd. \u0110\u00e2y c\u0169ng l\u00e0 c\u00e1ch gi\u00fap h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh h\u01a1n.<\/p>\n

K\u1ebft lu\u1eadn<\/h2>\n

N\u01b0\u1edbc gi\u1ebfng khoan c\u00f3 m\u00e0u v\u00e0ng v\u00e0 m\u00f9i tanh th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc ng\u1ea7m. S\u1eaft v\u00e0 mangan l\u00e0 nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn. Tuy nhi\u00ean, m\u00e0u v\u00e0 m\u00f9i kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c to\u00e0n b\u1ed9 v\u1ea5n \u0111\u1ec1.<\/p>\n

N\u1ebfu ngu\u1ed3n n\u01b0\u1edbc c\u00f3 d\u1ea5u hi\u1ec7u b\u1ea5t th\u01b0\u1eddng, n\u00ean x\u00e9t nghi\u1ec7m tr\u01b0\u1edbc. Sau \u0111\u00f3 m\u1edbi ch\u1ecdn ph\u01b0\u01a1ng \u00e1n x\u1eed l\u00fd. T\u00f9y ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 g\u1ed3m l\u1ecdc \u0111\u1ea7u ngu\u1ed3n, v\u1eadt li\u1ec7u kh\u1eed s\u1eaft, than ho\u1ea1t t\u00ednh ho\u1eb7c m\u00e1y RO. L\u00e0m \u0111\u00fang t\u1eeb \u0111\u1ea7u s\u1ebd gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb t\u1ed1t h\u01a1n.<\/p>\n

-nmqmkt-<\/p>\n","protected":false},"excerpt":{"rendered":"

N\u01b0\u1edbc gi\u1ebfng khoan c\u00f3 m\u00e0u v\u00e0ng, m\u00f9i tanh: Nguy\u00ean nh\u00e2n v\u00e0 c\u00e1ch x\u1eed l\u00fd N\u01b0\u1edbc gi\u1ebfng khoan b\u1ecb v\u00e0ng v\u00e0 c\u00f3 m\u00f9i tanh l\u00e0 t\u00ecnh tr\u1ea1ng kh\u00e1 ph\u1ed5 bi\u1ebfn. N\u01b0\u1edbc c\u00f3 th\u1ec3 trong khi v\u1eeba b\u01a1m l\u00ean. Sau m\u1ed9t l\u00fac, n\u01b0\u1edbc chuy\u1ec3n sang v\u00e0ng ho\u1eb7c n\u00e2u. M\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p c\u00f2n xu\u1ea5t hi\u1ec7n c\u1eb7n d\u01b0\u1edbi […]\n","protected":false},"author":1,"featured_media":2433,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2432","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"yoast_head":"\nN\u01b0\u1edbc gi\u1ebfng khoan c\u00f3 m\u00e0u v\u00e0ng, m\u00f9i tanh: C\u00e1ch x\u1eed l\u00fd - C\u00d4NG TY TNHH EWATER VI\u1ec6T NAM<\/title>\n<meta name=\"description\" content=\"N\u01b0\u1edbc gi\u1ebfng khoan c\u00f3 m\u00e0u v\u00e0ng, m\u00f9i tanh c\u00f3 th\u1ec3 do s\u1eaft, mangan ho\u1eb7c c\u00e1c ch\u1ea5t trong n\u01b0\u1edbc ng\u1ea7m. 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