Juanico M

Juanico M. (2005) = - Wastewater reservoirs.
In: A. Shilton (Ed.) - Pond Treatment Technology, IWA Publishers, pp. 357-380.

ABSTRACT

The chapter updates the information on = the design and operational criteria for these reservoirs, as well as data on th= eir performance.

Wastewater storage reservoirs are a key component in any water reuse project.

The new book on waste stabilization pon= ds can be purchased at http://www.iwapub= lishing.com

Table 1. Removal efficiencies of continuous-flow and bat= ch wastewater reservoirs receiving primary and secondary treated effluents. All results are from real scale reservoirs except those quoted as “experimental”.

Parameter	Continuous-flow	Batch 30-50 days	Sources
BOD	70 %	90 %	Juanico&Shelef (1991) Soler et al. (1991) Juanico&Shelef (1994)
COD	50 %	80 - 90 %
MBAS (detergents)	50 %	90 %	Juanico&Shelef (1991) Juanico&Shelef (1994)
Nitrogen		70 % – 80 % (1)	Juanico (1999) Avnimelech (1999) Bahri et al. (2000)
Phosphorus	< 30 %	60 % – 85 % (1)
10 - 30 %	Sala et al. (1994) Araujo et al. (2000) (experimental)
Faecal coliforms	90 - 99 %	99.99 % - total	Kott et a= l. (1978) Felgner & Sandring (1983)(experimental) Juanico&Shelef (1991) Juanico&Shelef (1994) Liran et al. (1994) Indelicato et al. (1996) Athayde<= span style=3D'mso-ansi-language:FR;mso-fareast-language:FR'> et al. (2000) (experimental)
Streptococcus and Clost= ridium		total	Berná= et al. (1= 986)
Giardia and Cryptospori= dium		99.99 %	Nasser et al. (2000)
Polivirus I - Chat		total	Funderburg et al. (1978) (experimental)
Nematode eggs		total	Kouraa et al. (2002) Barbagallo et al. (2002)
Heavy metals	down to background concentration in unpolluted waters	down to background concentration in unpolluted waters	Juanico et al. (1995)
Organic micropollutants : -- phthalate= s -- alkyl phe= nols -- alkyl ben= zenes -- hydrocarbons	60 – 75 % (2)=		Muszkat (1999)

(1): Data by Juanicó and Avnimelech are from two deep reservoirs in series, operated as continuous-f= low reactors but with some short periods of batch operation. Data by Bahri are = from shallow reservoirs.

(2): Soils irrigated with effluents from reservoirs did no present accumulation of studied organic micropolluta= nts. Those irrigated with effluents from activated sludge plants presented build= -up of some organic micropollutants.