Na mpaghara Longyan Sewage Treatment Plant na Nanchuan, Chongqing, ngwá ọrụ nyocha mmiri nke Sinomeasure: mita pH, ikuku oxygen gbazere, mita turbidity, mita sludge na ngwa ndị ọzọ ejirila nke ọma tinye n'ọrụ na usoro ọgwụgwọ nsị, nke dị ukwuu ...
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