Summary of helminth egg reduction and survival in several properly functioninga natural wastewater treatment system configurations. Number of systems in parentheses. It can be assumed that all produced sludges will contain pathogens where not noted.

Table: 

Process

Influent (Eggs/L)

Effluent (Eggs/L)

Log10 Reduction

Final Sludge (Eggs/g TSb)

% Viable Eggs

Waste Stabilization Ponds: F/M (3)

3 to 4.8E+01

NDc

NRd

6 to 3.54E+02

NR

Waste Stabilization Ponds: A/F/M(2)

2.6E+01

<1

>1.41

NR

NR

Waste Stabilization Ponds: F/M1/M2/M3 (1)

1.8E+01 to 8.8E+01

ND to 1.0

2.48

NR

NR

Waste Stabilization Ponds: A/F/M(2)

5 to 3.6E+01

ND

>2.89

2.84E+01 to 5.56E+02

36.0

UASB-Waste Stabilization Ponds: UASB/F2 (2)

2.1E+01 to 2.54E+02

ND to 1.5

>1.79 to 2.55

1.0E+01 to 1.058E+03e

44 to 100e

UASB-Waste Stabilization Ponds: UASB/F2/M1/M2 (1)

NR

ND

NR

NR

NR

aProperly functioning in terms of design, loading rates, or operation and maintenance; bTS: Total Solids; cND: Non-detect; dNR: Not Reported; eSamples taken at different locations in pond.

Table caption: 

Table 4c. Summary of helminth egg reduction and survival in several properly functioninga natural wastewater treatment system configurations. Number of systems in parentheses. It can be assumed that all produced sludges will contain pathogens where not noted.

Your Information
Your Comment