ʻO ka Electrodialysis (ED) kahi hana e hoʻohana ai i ka membrane semipermeable a me ke kahua uila o kēia manawa no ka lawe ʻana i nā ʻāpana solute i kau ʻia (e like me nā ion) mai kahi hopena. Hoʻomaʻemaʻe kēia kaʻina hoʻokaʻawale, hoʻoheheʻe, hoʻomaʻemaʻe, a hoʻomaʻemaʻe i nā haʻina ma ke kuhikuhi ʻana i nā solute i hoʻopaʻa ʻia mai ka wai a me nā mea ʻē aʻe i hoʻopaʻa ʻole ʻia. Ua ulu ka Electrodialysis i kahi hana kemika nui a he hana koʻikoʻi i ka ʻenehana hoʻokaʻawale membrane. Loaʻa iā ia ka hoʻohana ākea i nā ʻoihana e like me ka desalination kemika, desalination wai kai, meaʻai a me nā lāʻau lapaʻau, a me ka mālama ʻana i ka wai ʻino. I kekahi mau wahi, ua lilo ia i kumu kumu no ka hana ʻana i ka wai inu. Hāʻawi ia i nā pōmaikaʻi e like me ka hoʻohana ʻana i ka ikehu haʻahaʻa, nā pōmaikaʻi waiwai nui, ka hoʻomaʻamaʻa maʻalahi, nā lako paʻa paʻa, ka hoʻolālā ʻōnaehana maʻalahi, ka hana maʻalahi a me ka mālama ʻana, ka hana maʻemaʻe, ka hoʻohana haʻahaʻa haʻahaʻa, ka liʻiliʻi o ka pollution kaiapuni, ka lōʻihi o ke ola ʻana o ka mīkini, a me nā helu hoʻihoʻi wai kiʻekiʻe (maʻamau. mai 65% a 80%).
ʻO nā ʻenehana electrodialysis maʻamau e pili ana i ka electrodeionization (EDI), electrodialysis reversal (EDR), electrodialysis with liquid membranes (EDLM), high-temperature electrodialysis, roll-type electrodialysis, bipolar membrane electrodialysis, a me nā mea ʻē aʻe.
Hiki ke hoʻohana ʻia ka Electrodialysis no ka mālama ʻana i nā ʻano wai ʻino like ʻole, me ka hoʻoheheʻe electroplating a me ka wai ʻino metala kaumaha. Hiki ke hoʻohana ʻia no ka unuhi ʻana i nā ion metala a me nā mea ʻē aʻe mai ka wai ʻino, e ʻae ai i ka hoʻihoʻi ʻana a me ka hoʻohana hou ʻana i ka wai a me nā kumuwaiwai waiwai ʻoiai e hōʻemi ana i ka pollution a me nā hoʻokuʻu. Ua hōʻike nā haʻawina e hiki i ka electrodialysis ke hoʻihoʻi i ke keleawe, zinc, a hiki i ka oxidize Cr3+ i Cr6+ i ka wā o ka mālama ʻana i nā hopena passivation i ke kaʻina hana keleawe. Eia kekahi, ua hui pū ʻia ka electrodialysis me ka hoʻololi ʻana i ka ion no ka hoʻihoʻi ʻana i nā metala kaumaha a me nā waikawa mai ka wai ʻona pickling acid i nā noi ʻoihana. Ua hoʻohana ʻia nā mea hana electrodialysis i hoʻolālā ʻia, me ka hoʻohana ʻana i nā resins hoʻololi anion a me ka cation e like me ka hoʻopiha ʻana, ua hoʻohana ʻia e mālama i ka wai ʻino metala kaumaha, e loaʻa ana i ka hoʻihoʻi hou ʻana a me ka hoʻokuʻu ʻole. Hiki ke hoʻohana ʻia ka electrodialysis e mālama i ka wai ʻōpala alkaline a me ka wai ʻōpala organik.
Ua noiʻi ʻia ka noiʻi ma ka State Key Laboratory of Pollution Control and Reuse Reuse ma Kina i ka mālama ʻana i ka wai ʻōpala holoi alkali me ka epoxy propane chlorination huelo kinoea e hoʻohana ana i ka ion exchange membrane electrolysis. I ka manawa he 5.0V ka uila electrolysis a he 3 mau hola ka holo ʻana, ua hiki i ka COD removal rate of wastewater i 78%, a ʻo ke kiʻekiʻe o ka hoʻihoʻi ʻana o ka alkali e like me 73.55%, e lawelawe ana ma ke ʻano he pretreatment kūpono no nā ʻāpana biochemical ma hope. Ua hoʻohana pū ʻia ka ʻenehana Electrodialysis e mālama i ka wai ʻawaʻawa organik paʻakikī kiʻekiʻe, me ka nui o ka nui mai 3% a 15%, e Shandong Luhua Petrochemical Company. ʻAʻole hopena kēia ʻano i ke koena a i ʻole ka pollution lua, a ʻo ka hopena koʻikoʻi i loaʻa he 20% a 40% ka waikawa, hiki ke hana hou ʻia a mālama ʻia, e hōʻemi ana i ka ʻakika i loko o ka wai ʻino i 0,05% a 0,3%. Eia kekahi, ua hoʻohana ʻo Sinopec Sichuan Petrochemical Company i kahi mea electrodialysis kūikawā e mālama i ka wai ʻino condensate, e loaʻa ana ka nui o ka mālama ʻana o 36 t / h, me ka ʻike ammonium nitrate i loko o ka wai i hoʻopaʻa ʻia e piʻi ana ma luna o 20%, a loaʻa i ka helu hoʻihoʻi ma luna o 96 %. ʻO ka wai maʻemaʻe i mālama ʻia he hapa nui o ka ammonium nitrogen o ≤40mg/L, e kūpono ana i nā kūlana kaiapuni.
Ka manawa hoʻouna: Sep-07-2023
