Nzacha azụ akpaaka
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Akwa arụmọrụ akpaka Backwash nzacha maka mmiri ọgwụgwọ
Ihe nzacha akpaka nke akpaka bụ ihe nzacha akpaka nke ụlọ ọrụ mmepụta ihe nke nwere ike inye ọtụtụ ojiji zuru oke iji hụ na mmiri a kpochara dị ọcha ma dịkwa nchebe.
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Nzacha Azụ Akpaka nke Na-ehicha Onwe Ya
Njikwa akpaka PLC, Enweghị Ntinye Aka Aka, Belata Oge Mbelata