Qidong Municipal Municipal Sewage Treatment Plant e wuru na 2004. Ụlọ ọrụ ahụ na-etinyekarị aka na ọgwụgwọ nsị nke obodo.N'ime osisi ọgwụgwọ mmiri nke Qidong City, mita pH anyị, igwe ikuku oxygen gbazere na mita ndị ọzọ dị mma ka etinyere ya nke ọma na usoro ọgwụgwọ nsị oxidation, na-agbakwunye ike n'iwu nchekwa gburugburu obodo.
