Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/45005
- Performance evaluation of a small domestic sand filter
Geary, Phillip M.;
Stafford, David J.
- The University of Newcastle. Faculty of Science & Information Technology, School of Environmental and Life Sciences
- As part of the NSW Department of Local Government Septicsafe Program, funding was obtained to construct a low cost sand filter to treat domestic effluent. The construction of the domestic facility, which incorporated a septic tank, dosing siphons, sand filter (with a layer of additional filter media of zeolite to remove ammonium), collection well and drip irrigation system, has previously been described by Geary et al (2001) at the On-site '01 Conference. Some of the preliminary monitoring results from the innovative sand filter design were also presented. In this paper the first twelve months of monitoring underdertaken between May 2001 and April 2002 are presented. The results indicate that the low cost alternative treatment system has performed exceptionally well and consistently produced an effluent of high quality with only minor system maintenance requirements. The results of chemical analysis suggest that intermittently dosed sand filters do have a significant capacity to consistently treat domestic effluent from a septic tank to a secondary standard. Significant levels of biochemical oxygen demand and total suspended solids removal were achieved and high rates of nitrification resulted in most of the organic nitrogen and ammonia being converted to nitrate. The full description of the project and the monitoring results are contained in the recently prepared project report for the Septicsafe program (Geary et al, 2003).
- On-site '03 : Future Directions for On-site Systems: Best Management Practice. Proceedings of On-site '03 Conference: Future Directions for On-site Systems: Best Management Practice (University of New England, Armidale, N.S.W. 30th September - 2nd October,) p. 161-168
- Lanfax Laboratories
- Resource Type
- conference paper