Stabilization of High-Organic-Content Water Treatment Sludge by Pyrolysis

PCDD/Fs Inhibition by Sludge Decomposition Gases: Effects of Sludge Dosage, Treatment Temperature and Oxygen Content

Sludge decomposition gases (SDG) have been identified as potential PCDD/F-inhibitors, since they contain high concentrations of NH3 and SO2 as well as various unidentified Nand S-compounds. The effects of sludge dosage, its treatment temperature and oxygen content on PCDD/Fs suppression were observed during test runs using a model fly ash (MFA) system, generating high chlorinated PCDD/Fs. The e...

Stabilization of high mercury contaminated brine purification sludge.

The highly leachable mercury contaminants of brine purification sludge (BPS) generated from the Hg-cell electrolysis process in chlorine production can be stabilized in the treatment procedure employing ferric-lignin derivatives (FLD) (Ligmet binder) and Portland cement (PC). The stabilization effectiveness has been examined by time-based multiple toxicity characteristic leaching procedure (TCL...

The Organic Content of Lake Water.

Effect of influent organic content on digested sludge extracellular polymer content and dewaterability.

The organic composition of the feed sludge to six laboratory-scale anaerobic digesters was adjusted by substituting a proportion of the primary sludge for glucose or propionic acid solution. Substitution with glucose caused an increase in the microbial extracellular polymer (ECP) content of the digested sludge, which altered the particle size distribution of the sludge and made the sludge more ...

Ozone treatment of organic micro-pollutants in sewage sludge.

Organic micro-pollutants accumulate to a certain extent in sewage sludge and are therefore ecologically relevant if the sludge is to be reused in both agriculture and landscaping applications. This paper describes the degradation of endocrine-disrupting compounds and other micro-contaminants by means of ozone and ultrasonic treatment. One of the findings is that, as expected, aromatic compounds...