Received: 17-11-2014 / Accepted: 21-04-2015
A study on pig production at 22 pig farms in Gia Lam district was conductedto assess overall environmentalquality of pig-farming,to identify maincharacteristics and pollution sources of pigproduction process and to proposealternative solutions for environmentalprotection. The results showed that pig-farms are taking some measuresfor waste treatment. However, waste from pig-farming was treatedincompletely and discharged directly to environment. Surface-water around pig-farmswas polluted by TSS, COD, NH4+and PO43, whilegroundwater was contaminated by NH4+. The study has identifiedpollution sources, causes of pollution and proposedsome solutions to protect the environment forpig-farming in Gia Lam district.