Amaphilisi okwesekwa kwemizwi ayisikhundla esikhulu ekuvikeleni ukuthi imizwi ithathe isibonelo. Umthombo wokusebenza wokuthi yinto ebalulekileyo emaphilisini ngu- itanki yokugcina izilwane . Khumbula ngokuthi ngu-pond enkulu eshiywa apho amanzi amibi kwezindlu nezibhizinisi ayenqamisa. Ngenxa yokuthi amanzi ayenqamisa ngokushesha, izinto ezenzima njengamanzi, umthwakuli, nezinto ezingavamile ziyenqamisa ezinyakeni. Le zinto eziqamiswe zihlwa ngokuthi ziyi-sludge. Ngokuvumela izinto ezingavamile ukwenqamisa, amanzi ayenqamisa ngokuphelele phambi kokuthi ayo kuyena kubanga lokusebenza lwesibili. Le ndlela yilodwa kodwa iyasebenza ngempilo ekususelweni kwamakhanda okunye okungabikho emazini. U-Dinghui uyazi ukuthi lezi tancu zinobukhali banezinkinga futhi uzimela zibe nzima nezisebenza ngempilo, ukuze amanzi abe nemphilo.