ʻO nā mea hoʻoheheʻe ʻōpala (e like me PR, NMP, PMA, a me nā mea ʻē aʻe) i hana ʻia e nā pena, nā ʻīnika, nā kala lole, a me nā aila lole e hana ʻia e nā mea hoʻoponopono ma lalo o kekahi mau kūlana hana e loaʻa ai nā huahana solvent. Hoʻohana nui ʻia kēia mau huahana ma ke ʻano he mau mea hoʻoheheʻe no nā ʻīnika, nā pena, nā ʻīnika, nā kala lole, a me nā aila lole, a me nā mea hoʻomaʻemaʻe i ka hana ʻana o nā hōʻikeʻike kristal wai.
ʻO ka hoʻolauna ʻana i ka ʻenehana a me nā lako o ka ʻOihana ʻOgano, kahi ʻoihana i helu ʻia ma Iapana me ka ʻoi aku o 70 mau makahiki o ka ʻike i ka mālama ʻana i ka wai, ma o ka hoʻohana ʻana i ka neutralization acid-base, chemical precipitation, Fenton oxidation, pressurized air flotation, anaerobic hydrolysis, a me ka IC internal circulation anaerobic Oxygen reaction, contact oxidation, activated carbon adsorption a me nā kaʻina hana mālama wai ʻino ʻē aʻe e hiki ai i ka ʻoihana ke hoʻolako piha ʻia ma ke ʻano o nā lako, ʻenehana a me nā talena e hana hou a mālama i nā wai ʻōpala organik kiʻekiʻe, nā wai ʻōpala i loaʻa ka fluorine, nā waikawa ʻōpala a me nā ʻōpala alkali, nā wai ʻōpala i loaʻa ke keleawe a me nā wai ʻōpala ʻoihana ʻē aʻe a me nā wai ʻōpala home. Hiki i ka hiki ke hana i kēlā me kēia lā o nā wai ʻōpala like ʻole ke hiki aku ma mua o 100 tons. Hiki ke hoʻohana hou ʻia ka wai i mālama ʻia e like me ka wai hoʻokahe i loko o ka hale hana hana a me ka hoʻomaʻemaʻe ʻana i ka wahi hale hana, e hoʻokō ana i ka pono o nā kumuwaiwai.