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 ejirila nke ọma tinye n'ọrụ n'usoro ọgwụgwọ nsị nsị oxidation, na-agbakwunye ike na owuwu nchekwa gburugburu obodo.
