It offers the advantage of lower wastage of biomass concentration

It offers the advantage of lower wastage of biomass concentration as it facilitates its greater management 17-DMAG (Table 4).Table 4The average waste sludge characteristics of different aerobic treatment systems. The conventional activated sludge process was found to be responsible for 3.48 �� 107cfu/mL of bacterial consortia in the reactor (MLSS: 3000mg/L). The carrier biofilm media provide evidence of enormous TVC concentration with an average of 3.74 �� 107cfu/cm2 by means of 8000�C9000mg/L solids. The presence of greater surface area per unit volume enhances the bacterial population responsible for organic degradation through the PBBR process [26].Table 3 also showed improvement in the performance of PBBR compared to other systems.

This is primarily because of the specific arrangement of fixed bed provided with low pressure drops through the beds and reduced channeling through the beds. This led to an improved hydraulic residence time distribution which has significant effects in terms of quality control of out-flowing treated water and in terms of potential reduction in reactor size and sludge volume and cost. The present configuration reduced the channeling phenomena and effectively reduced surface area which helped a better contact with the polluted water and therefore effective biodegradation was facilitated. This also contributed to the presence of extra oxygenation and helped the sludge in getting mineralized. The mineralization results in lesser biomass at the outlet of the system and reduced the menace of handling sludge.

Thus lower organic load would then require lower hydraulic retention time and even 1.0h of HRT is also achievable [27] but the type and strength of organic wastewater in domestic wastewater will vary the HRT for organic degradation.3.6. Microbial InvestigationThe species of microorganism which frequently dominate in any biological system depend on the environmental conditions, process design, and plant operation [28]. The isolation, and the identification of a microbial consortium were conducted to have an overview of reactions that can occur during the treatment of residential wastewater (Figure 3). The complete profiling of microflora population at various zones of biological processes, that is, inlet, outlet, and aeration tank, and on the biocarrier surface revealed the presence of approximately 22 bacterial strains grown on nutrient agar medium. These bacterial populations were reduced significantly at the outlet of the reactors,which Carfilzomib is evident from the results on TVC (Table 3). There is a possibility of the existence of other microbial populations which could not be detected in a nutrient agar medium.

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