THE QUALITY OF SEWAGE AND SEWAGE SLUDGE FROM THE MUNICIPAL WASTEWATER TREATMENT PLANT USING „BIOPAX” TECHNOLOGY

degradation of organic matter of municipal sewage sludge using ultrasound treatment in shiraz wastewater treatment plant

results the results of this study showed that the release of soluble chemical oxygen demand (scod) in the supernatant and srf were in the range of 127.9-831 mg/l and 12.48-36.55 m/kg at 10 to 120 min ultrasonic contact time, respectively. in addition, ts and vs decreased from 57.98 and 56.31 to 52.69 and 49.87 mg/l, respectively. despite the significant reduction in the solids, there was no con...

Recovery of volatile fatty acids from fermentation of sewage sludge in municipal wastewater treatment plants.

This work investigated the pilot scale production of short chain fatty acids (SCFAs) from sewage sludge through alkaline fermentation and the subsequent membrane filtration. Furthermore, the impact of the fermentation liquid on nutrient bioremoval was examined. The addition of wollastonite in the fermenter to buffer the pH affected the composition of the carbon source produced during fermentati...

Evaluation of Sewage Sludge for Incineration (Case study: Arak Wastewater Treatment Plant)

Sewage sludge treatment has become a primary subject in wastewater treatment and energy production. This paper aims to study the feasibility of power generation by incineration from sewage sludge enriched with impurities like heavy metals. For this purpose, we chose Arak wastewater treatment plant (AWWTP) and used calorific bomb test for examination. The experimental results showed that the hea...

Feasibility of treating the produced sludge in municipal wastewater treatment plant using ozonation method

Background and Objective: Wastewater treatment and stabilization always imposes costs and consequently a lot of energy on wastewater treatment plants. To achieve the purification and stabilization of as much sludge as possible, breaking complex components into simpler components is considered a critical step. Therefore, this study aimed to evaluate the feasibility of treating the produced sludg...

Biocides in wastewater and in sewage sludge