Cooperative Extension Service

Management of Alternative On-Site Wastewater Systems - A Case Study

North Gloucester Pilot On-Site Systems
Treatment Systems Performance
ParametersRSFISFBio- FilterBioclereRTF*
** Colburn St. Langsford St. Washington St. Bittersweet Rd. High St. Vale Ct. Brierwood St.
BOD5(mg/l).............. IN
...................................OUT
..............................% Rem.		 314
7
98
 270
11
96
 264
15
94
 155
12
92
 143
29
80
 248
51
79
 89
29
86
TSS (mg/l)..................IN
...................................OUT
..............................% Rem.		 7.8
6.8		 8.1
6.9		 6.7
6.8		 7.1
7.3		 7.8
7.4		 7.0
7.2		 6.4
6.5
O & G...........................IN
...................................OUT
.............................% Rem.		 37.0
2.3
94		 40.9
7.3
82		 N.A.
N.A.
N.A.		 N.A.
N.A.
N.A.		 54.3
2.7
95		 45.8
4.8
90		 N.A.
N.A.
N.A.
Conductivity............. IN
(micromhos/cm)...OUT
..............................% Rem.		 885
806		 1190
828		 866
847		 763
636		 626
519		 620
495		 602
422


RSF = Recirculating Sand Filter
ISF = Intermittent Sand Filter
Bio-Filter = Waterloo Bio-Filter
IN = Septic Tank Effluent (Except for Brierwood Site)
OUT = Treated Effluent (Before Leachfield, Except for Brierwood Site).
Bioclere = AWT Bioclere
RTF = ORENCO Trickling Filter
*RTF is installed in the septic tank and discharges to a sand- lined bed; Samples are collected at the tank outlet & at the bottom of the bed.


Please address any questions to Dr. David Lindbo, Assistant Professor, Extension Specialist.

This page (http://www.ces.ncsu.edu/plymouth/septic/table2.html) created by
Vera MacConnell, Research Technician, I on November 15, 1996.
Last Updated on June 4, 1999.

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