By control of such floway operating conditions as water flow rate, light level, intensity and {TAIL ~ wavelength}, water surge rate, recirculation rate, and {HEAD ~ nutrient concentrations}, the pH of the water adjacent the algal cell wall is caused to increase to a level at which the desired pollutants precipitate 
By control of such floway operating conditions as water flow rate , light level , intensity and { TAIL ~ wavelength } , water surge rate , recirculation rate , and { HEAD ~ nutrient concentrations } , the pH of the water adjacent the algal cell wall is caused to increase to a level at which the desired pollutants precipitate
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH