Research on separation and purification of indicative filamentous bacteria from activated sludge
An indicative single filamentous bacterium was obtained from the activated sludge of indus-trial wastewater treated by a pharmaceutical company.The growth temperature of the bacteria was set at 20℃,24℃,28℃,32℃ and 36℃,and pH at 3.0,4.0,5.0,6.0,7.0,8.0,and 9.0.The num-ber of colonies and the removal rates of COD and ammonia nitrogen were measured under different growth conditions.The results showed that the growth state of the indicative filamentous bacteria was the best when the temperature was 28℃ and pH was 7.0-8.0.At the same time,the purified fila-mentous bacteria were inoculated into the activated sludge to treat the wastewater for a period of time.The main monitoring indexes were MLSS 2.67g/L,SV 20％and SVI 74.9mL/g.The export water quality,which is BOD525 mg/L,COD 68 mg/L,SS 20 mg/L,can meet the standard.
activated sludgeindicator bacteriaseparation and purificationindustrial application
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维普
