Planktonic algal populations as an integral part of wastewater treatment

Abstract

Carries out an investigation to evaluate the performance of the maturation pond, one of an aerated oxidation pond system at the Mit Mazah Sewage Treatment Plant (Daquahliya Governorate, Egypt), with respect to phytoplanktonic structure and nutrient elimination during different seasons. Details how the study collected composite water samples from the maturation pond at monthly intervals. Observes that there are substantial changes in the distribution pattern of the algal community structure during different seasons. Concludes that to obtain considerable algal biomass in the maturation pond, the pond system must be subjected to performance control.

Characterization of Brewery Wastewater for Reuse in Kigali, Rwanda

“…The TSS concentration suggests that the wastewater can be used in fisheries, since fisheries require reclaimed water quality of 30 mg L -1 [2,19]. According to [20], the allowable TSS value for water reuse for irrigation is 20 mg L -1 hence TSS value of the wastewater from BSDF suggested the water is not suitable to be reused for irrigation. .…”

“…The difference in TP concentration tended to increase between EQ1 and EQ2; EQ2 and SBR1a; SBR2a and SBR2b; where P (T<=t) values were 0.057; 0.053; 0.056, respectively. The mean value of TP recorded (11.4±7.5) mg L -1 was obtained after an overall RE of 30% which means that the value was below that expected (15 mg L -1 ) for discharge into catchments areas or artificial recharge as suggested by [19][20][21]. Fig.…”

“…The measured chloride residual was 0.4±0.2 mg L -1 . According to [20], the allowable effluent residual chloride should be below 1 mg L -1 for urban water re-use. According to [9], the minimum requirements for liquid wastes disposal and treatment for effluent residual chloride discharge is 1 mg L -1 .…”

“…The allowable COD for discharge is 200 mg L -1 according to [18] while [1] recommended 80 mg L -1 for surface irrigation. Researchers such as [20,23] proposed COD concentration value of 103 mg L -1 for irrigation purposes or for discharging into streams.…”