Ihe nzacha Zdu na-aga n'ihu na-aga n'ihu bụ ngwaọrụ maka nkewa mmiri siri ike na-ebute site na agụụ na-adịghị mma.Structurally, nzacha ngalaba na-ahaziri n'akụkụ kehoraizin ogologo direction, nke nwere ike na-aga n'ihu mezue filtration, ịsacha, ihicha na nyo akwa ọhụrụ.Ngwaọrụ nwere arụmọrụ nzacha dị elu, nnukwu mmepụta ikike, mmetụta ịsa ahụ dị mma, obere mmiri ọdịnaya nke achicha nzacha na ọrụ na-agbanwe agbanwe, ọnụ ahịa mmezi dị ala.Enwere ike iji ya mee ihe n'ọtụtụ ebe na nkewa mmiri siri ike na metallurgy, Ngwuputa kemịkalụ, ụlọ ọrụ kemịkalụ, imepụta akwụkwọ, nri, ụlọ ahịa ọgwụ, nchebe gburugburu ebe obibi na mpaghara ndị ọzọ, ọkachasị na mmiri mmiri gypsum na flue gas desulfurization (FGD).