Bioremediation of reject water from anaerobically digested waste water sludge with macroalgae ( Ulva lactuca , Chlorophyta)

Bioremediation of reject water from anaerobically digested waste water sludge with macroalgae (Ulva lactuca, Chlorophyta).

Phosphorus and biologically active nitrogen are valuable nutrient resources. Bioremediation with macroalgae is a potential means for recovering nutrients from waste streams. In this study, reject water from anaerobically digested sewage sludge was successfully tested as nutrient source for cultivation of the green macroalgae Ulva lactuca. Maximal growth rates of 54.57±2.16% FW d(-1) were achiev...

Uptake of urea and amino acids by the macroalgae Ulva lactuca (Chlorophyta) and Gracilaria vermiculophylla (Rhodophyta)

Dissolved organic nitrogen (DON) makes up a large fraction of the total dissolved nitrogen pool in coastal waters, but is often ignored as a potential nitrogen source for primary producers. In laboratory experiments, we measured the uptake of small, labile DON compounds, urea and a variety of different amino acids, by the common estuarine macroalgae Ulva lactuca and Gracilaria vermiculophylla. ...

Co-conditioning of Digested Excess Activated Sludge with Alum 1 Sludge: Benefit of Phosphorus Reduction in Reject Water

The influence of sulfathiazole on the macroalgae Ulva lactuca.

Sulfonamides (SA) are a class of antibiotics routinely found in environmental matrices and therefore their role as contaminants should be investigated in non-target organisms. With this purpose the present experimental work has evaluated the exposure of the chlorophycean Ulva lactuca L. to sulfathiazole (STZ), a SA drug commonly used in aquaculture, at two concentrations representing prophylact...

Effect of Temperature on Flow Properties of Digested Waste Water Sludge

The digested waste water sludge from the Zeinein station, North of Cairo was characterized for its physical and chemical properties. The flow properties of this sludge were followed at different temperatures, for different levels of solid content. The yield strength of the sludge was found to increase linearly with temperature. The apparent viscosity was related to absolute temperature by an eq...