depurated effluent

GC: n

CT: Extraction of algae pigments from a depurated effluent.
A minireview of the researchs in algal biomass from wastewater depuration ponds is presented. It’s shown algal pigments cultured, although some other characteristics are commented: factors determining algal populations, biotreatment of agroindustrial effluents with microalgae and potencial applications of algae mass cultured.

S: (last access: 13 February 2015)

N: 1. depurated (adj): from Medieval Latin depuratus, past participle of depurare, to purify ; from Classical Latin de-, intensive + purare, to purify ; from purus, pure.
effluent (n): effluent (adj.), mid-15c., from Latin effluentem “flowing out” (see effluence). As a noun, “that which flows out,” from 1859; specific meaning “liquid industrial waste” is from 1930.
2. Conventional activated sludge systems utilise settlement tanks that rely on gravity to separate the purified effluent from the biomass. Effluent enters the settlement tank and the suspended solids (biomass) settle to the bottom with the clarified effluent will then passing over a weir for discharge or further tertiary treatment. The sludge from the settlement tank is then recycled back into the aeration tank where it is re-activated and undertakes further degradation of organic material. From time to time, sludge is wasted from the system in order to maintain a stable biomass concentration within the aeration tank.

S: 1.; MW (last access: 13 February 2015); OED – (last access: 13 February 2015). 2. (last access: 13 February 2015).

SYN: purified effluent

S: TERMIUMPLUS; (last access: 13 February 2015).

CR: biomass, biomass energy, renewable energy.