Sludge characteristics

Because of the wide variability in sludge characteristics and the variation in acceptability of treated sludges for ultimate disposal (this is a function of the location and characteristics of the ultimate disposal site), it is impossible to prescribe any particular sludge-management plan. In the sections below, general performance of individual sludge-treatment processes and operations is presented. 

Carballa M, Omil F, Ahad JME (2009) Influence of different pretreatments on anaerobically digested sludge characteristics suitability for final disposal. Water Air Soil Pollut 199 311-321... 

In our experiments the coagulation of fish processing wastewater was performed using ferric sulfate. The sludge generated in this process has been added for silage production. The sludge characteristics are presented in Table 3. 

If the above parameters are correct and the oxidized sludge characteristics are not within recommended limits, check the unit pressure. This should be between 30 and 40 psi. 

Data on particle and aggregate distribution (reported, for instance, in reference 6) are not included here because no currently accepted concept stipulates how these data should be included quantitatively into the analysis described schematically in Figure 1. Solids removal in terms of sludge was not done sludge characteristics as such were not investigated. 

T) olymer treatment of municipal wastes is common practice. Numerous papers have been published relating sludge characteristics to dewater-ability (1-7). Little has been done to correlate polymeric flocculant characteristics with the ability to dewater activated sludges. 

A. Chakraborty, M. Sain, and M. Kortschot, ACS Symp. Series, 938,169,2006. G.M. Scott, and A. Smith, Sludge characteristics and disposal alternatives for the pulp and paper industry, in International Environmental Conference Proceedings, Atlanta, 1995. 

Lee W (2003), Sludge characteristics and their contribution to microflltration in submerged membrane bioreactors, J Membrane Sci, 216,217-227. 

An example of a membrane module for assembling in a MBR is reported in Fig. 23.5. It is evident that many factors could affect MBR performance, as summarized in Fig. 23.6 membrane properties, sludge characteristics and operating conditions that are related to capital and maintenance costs, materials and utUities costs as well as service costs. Their optimization is strictly related to the economics of the treatment systems, also compared with traditional ones. 

Sludge Characteristics The characteristics of the sludge formed in MBRs... 

The hydraulic retention time (HRT) should be long enough to ensure hydrolysis and avoid short cuts. According to van der Roest et al. (2002), the use of a selector tank to improve the sludge characteristics may be beneficial. 

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