Design and experimental testing of small-scale acid mine drainage treatment plant

A small-scale plant consists of sand filter; ultrafiltration and reverse osmosis for treatment of acid mine drainage (amd) was designed and tested using a synthetic solution of amd. in the current work,rice husk ash and coal fly ash were used as an adsorbent for amd. some parameters such as acidity (ph),electrical conductivity (ec),iron,manganese,and sulfate concentrations were investigated. the results showed that permeate flux and water recovery percentage obtained at operating pressure of 3.4 kg.cm-2 as 4.06 l.min-1 and 10.8%,respectively. it is also found that the amd plant can increase the ph of synthetic acid mine up to 125 % and the sulfate,iron,and manganese are reduced by 98.00,94.11,and 95.84 %,respectively. the results also showed that the amd small scale plant was capable to produce high quality of permeate and have met the environmental standard.