Na mpaghara Longyan Sewage Treatment Plant dị na Nanchuan, Chongqing, ngwá ọrụ nyocha mmiri nke Sinomeasure: mita pH, ikuku oxygen gbazere, mita turbidity, mita sludge na ihe ndị ọzọ ejirila nke ọma tinye n'ọrụ na usoro ọgwụgwọ nsị, nke na-eme ka izi ezi nke ọma dịkwuo mma. Nyocha nke mmiri na-ekwe nkwa na arụmọrụ dị elu na nkwụsi ike nke ọgwụgwọ nsị mmiri.
