Traditional activated sludge culture scheme with traditional function (carbon removal)

Domestication of activated sludge 1 and cultivation of activated sludge (1), so that the BOD5 of domestic sewage is adjusted to 200 ~ 300mg/L, and continuous aeration is carried out in the aeration tank, generally at 15 ~ 20℃ for one week, and activated sludge flocs appear, so as to master the moisture change, and discharge the remaining sludge for supplementary nutrition. When a large number of flocs appear, aeration is stopped, and 1 ~ L.5h is precipitated, and the discharged amount accounts for about 60 ~ 70% of the total volume. Adjust the inflow of domestic sewage and continue aeration. When the sedimentation rate is close to 30%, it shows that the sludge concentration of the mixed liquid in the tank has met the requirements. From water diversion-aeration-aeration-sludge maturation-it has good cohesiveness and sedimentation. The general cycle is 7 ~ 10 day, and the removal rate of BOD5 is about 95%. (2) Expand cultivation. Continuously change water-burst-put into use, reflux 50%, mature in two weeks, put into normal operation. 2. Domestication of activated sludge If industrial wastewater is treated, the proportion of industrial wastewater in mature activated sludge will gradually increase until it reaches full load, and the normal operation of activated sludge is positive.