Pretreatment of wastewater from flax production by miro-electrolysis process

Micro-electrolysis process was used to pretreat wastewater from flax production.The influences of filling material,pH value and reaction time on CODCr removal were investigated.The results of the test showed that: when the iron-carbon mass ratio was 1,the influent pH value was 3.0,the reaction time was 3 h,the Ca(OH)2 dosage was 1.5 g/L,using aeration method,the removal rate of CODCr could reach about 31.8%,the biodegradability increased from 0.21 to 0.47,which provided favorable condition for the subsequent biochemical treatment.