- The removal efficiency of organic pollutant mainly depends on the active biomass of biofilm in the biological pretreatment of drinking water.
- Yx,s (yield of active biomass on the substrate) reached 0.4 kg VSS per kilogram of COD for cell protein concentrations of 30%50%. Yp,s (yield of SCP on the substrate) was 0.20.4 kg SCP per kilogram of COD and slowly increasing.
- The orient has been playing an active role in the world economy.
- He is an active member of the school's stamp club.
- An active volcano may explode at any time.
- Is it wise to engage in active sports at your age?