ʻO Dicyandiamide formaldehyde resin decoloring agent

Ma waena o ka hoʻomaʻamaʻa ʻana i ka wai ʻino, ʻo ka paʻi ʻana a me ke kala ʻana i ka wai ʻino kekahi o nā wai ʻōpala paʻakikī loa. He paʻakikī kona haku mele ʻana, ka waiwai chroma kiʻekiʻe, ka noʻonoʻo kiʻekiʻe, a paʻakikī ke hoʻohaʻahaʻa. ʻO ia kekahi o nā wai ʻino ʻoihana koʻikoʻi a paʻakikī hoʻi e hoʻohaumia i ke kaiapuni. ʻOi aku ka paʻakikī o ka wehe ʻana i ka chroma i waena o nā pilikia.

Ma waena o ka nui o ka paʻi ʻana a me ke kala ʻana i nā ʻano hana hoʻōla wai, ʻo ka hoʻohana ʻana i ka coagulation ka mea i hoʻohana nui ʻia i nā ʻoihana. I kēia manawa, ʻo nā flocculants maʻamau i hoʻohana ʻia i ka paʻi textile a me nā ʻoihana hoʻoluʻu i koʻu ʻāina he mau flocculants kumu alumini a me ka hao. He ʻilihune ka hopena decolorization, a inā hoʻopau ʻia ke kala reactive, ʻaneʻane ʻaʻohe hopena decolorization, a e mau ana nā ion metala i loko o ka wai i mālama ʻia, he mea ʻino loa ia i ke kino kanaka a me ke kaiapuni a puni.

ʻO Dicyandiamide formaldehyde resin decoloring agent he organic polymer flocculant, quaternary ammonium salt type. Hoʻohālikelike ʻia me nā flocculants decolorizing maʻamau, he wikiwiki ka flocculation wikiwiki, liʻiliʻi ka dosage, a pili ʻia e nā paʻakai e noho pū ana, PH a me nā pono e like me ka liʻiliʻi o ka hopena o ka wela.

ʻO ka dicyandiamide formaldehyde resin decoloring agent he flocculant i hoʻohana nui ʻia no ka decolorization a me ka wehe ʻana o COD. I ka hoʻohana ʻana iā ia, ʻōlelo ʻia e hoʻoponopono i ka waiwai pH o ka wai ʻōpala i kū ʻole. E ʻoluʻolu e kamaʻilio me nā ʻenehana no nā ʻano hoʻohana kikoʻī. Wahi a nā manaʻo like ʻole mai ka paʻi ʻana a me nā mea hana dyeing ʻo ka dicyandiamide formaldehyde resin decolorizer he hopena koʻikoʻi i ka decolorization o ka paʻi ʻana a me ka wai kala. Hiki i ka chroma removal rate ke piʻi aku ma mua o 96%, a ʻo ka hoʻoneʻe ʻana o COD ua hiki aku ma mua o 70%.

Ua hoʻohana mua ʻia nā flocculants polymer organik i ka makahiki 1950, ka nui o nā flocculants mālama wai polyacrylamide, a hiki ke hoʻokaʻawale ʻia ka polyacrylamide i non-ionic, anionic, a me cationic. Ma kēia ʻatikala, e hoʻomaopopo mākou i ka acrylamide polymer dicyandiamide formaldehyde resin decolorizing flocculant i paʻakai ʻia me ka quaternary amine ma waena o nā cationic organic polymer flocculant.

Hoʻopili mua ʻia ka dicyandiamide formaldehyde resin decolorizing flocculant me ka acrylamide a me ka formaldehyde aqueous solution ma lalo o nā kūlana alkaline, a laila hana ʻia me ka dimethylamine, a laila hoʻoluʻu a quaternized me ka waikawa hydrochloric. Hoʻopili ʻia ka huahana e ka evaporation a kānana e kiʻi i kahi monomer acrylamide quaternized.

Ua hoʻokomo ʻia ka dicyandiamide-formaldehyde condensation polymer decolorizing flocculant i nā makahiki 1990. Loaʻa iā ia kahi hopena kūikawā maikaʻi loa o ka wehe ʻana i ke kala o ka wai ʻōpala. I ka hoʻomaʻamaʻa ʻana i ka wai hoʻoneʻe kiʻekiʻe a me ke kiʻekiʻe, hoʻohana ʻia ka polyacrylamide a i ʻole polyacrylamide. ʻAʻole hiki i ka polyaluminum chloride flocculant ke wehe loa i ka puaʻa, a ma hope o ka hoʻohui ʻana i ka flocculant decolorizing, hoʻopau ia i ka hoʻopiʻi maikaʻi ʻole i hoʻopili ʻia i nā molekole dye i loko o ka wai ʻino ma o ka hāʻawi ʻana i ka nui o nā cations a no laila destabilizes ʻO ka hope, ua hoʻokumu ʻia kahi helu nui o nā floccules, hiki ke hoʻokō i nā molekala kala ma hope o ka flocculation a me ka destabilization.

Pehea e hoʻohana ai i ka decolorizer:

ʻO ke ʻano o ka hoʻohana ʻana i ka flocculant decolorizing e like me ka polyacrylamide. ʻOiai he ʻano wai ka mea mua, pono e hoʻoheheʻe ʻia ma mua o ka hoʻohana ʻana. Manaʻo ka mea hana e hoʻoheheʻe ʻia e 10% -50%, a laila hoʻohui ʻia i ka wai ʻōpala a hoʻoulu ʻia. Hoʻokumu i nā pua alum. Hoʻopili ʻia ka mea waihoʻoluʻu i loko o ka wai ʻōpala waihoʻoluʻu a hoʻoheheʻe ʻia i waho o ka wai, a ua hoʻolako ʻia me ka sedimentation a i ʻole ka lele ʻana o ka ea e hiki ai ke kaʻawale.

I ka paʻi ʻana a me ke kala, textile a me nā ʻoihana ʻē aʻe, ʻoi aku ka nui o ka hoʻohana ʻana i ka wai a haʻahaʻa ka helu hoʻohana hou. No laila, he mea maʻamau ka hoʻopau ʻana i nā kumuwaiwai wai. Inā hoʻohana ʻia ke kaʻina hana no ka mālama ʻana a me ka hana hou ʻana i kēia wai ʻona ʻenehana kiʻekiʻe a me ka nui o ka wai, ʻaʻole hiki iā ia ke mālama i ka nui o nā kumuwaiwai wai hou, akā hiki iā ia ke hōʻemi pololei i ka hoʻokuʻu ʻia ʻana o ka wai ʻona ʻoihana, ʻo ia ka mea nui a lōʻihi loa no ka hoʻolaha ʻana i ka hoʻomohala hoʻomau o ka paʻi, kala a me nā ʻoihana lole.

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