Study on Anaerobic Acidogenic Fermentation of Organic Wastewater

Acidogenic fermentation of organic wastewater by the anaerobic activated sludge was studied.The influence of single feedings,multiple feedings,adjusting the pH to acid level and other cultivation modes on the acidogenic result was investigated,and the optimal acidogenic pH value was determined.The results show that under the conditions that the temperature is(36±1) ℃,influent COD is 25 000 mg/L and pH is between 4.0 and 4.5,a high production capacity of acetic acid is achieved in the anaerobic activated sludge when using multiple feedings and pH of 4.3.