This study aimed to develop a new, complex pig manure treatment and filtration process. The final
scheme, called the AMAK process, comprised the following successive steps: mineralization with mineral
acids, alkalization with lime milk, superphosphate addition, a second alkalization, thermal treatment,
and pressure filtration. The proposed method produced a filtrate with 95%, 80%, and 96% reductions in
chemical oxygen demand, nitrogen content, and phosphorus content, respectively. An advantage of the
proposed method was that it incorporated a crystalline phase into the solid organic part of the manure,
which enabled high filtration rates (>1000 kg m2 h1
) and efficient separation. The process also
eliminated odor emissions from the filtrate and sediment. The treated filtrate could be used to irrigate
crops or it could be further treated in conventional biological wastewater treatment plants. The sediment
could be used for producing mineral-organic fertilizer. The AMAK process is inexpensive, and it requires
low investment costs.