Technology progresses of swine wastewater treatment from large-scale pig farms

For the large-scale swine wastewater with the characteristics of high concentration of organic matter, suspended solids and more high ammonia nitrogen, odor, complex pollution ingredient and large emissions, combined with Chinese national conditions, adapting conditions and characteristic of the three of back-to-field mode, ecological processing mode and bio-processing mode are analyzed. Meanwhile, it is proposed that the development direction and main problems of the current swine wastewater treatment.