Water Environment Federation (WEF) Discussion ForumsWater Environment Federation (WEF) Discussion Forumshttp://www.wef.org/TechnicalDiscussions/jfuller@wef.orgSat, 22 Nov 2008 11:53:17 GMT20http://www.wef.org/TechnicalDiscussions/Topic8854-16-1.aspxSulfree™ OS (Oil Soluble) and Sulfree™ WS (Water Soluble), recently developed and patented, represent new technology for the deodorizing and modifying of septic wastes. Until now, there has not been a solution for waste management that removes foul odors while minimizing the labor and difficulty in handling stinky waste products.<br><br>Sulfree™works safely, efficiently, and provides a green solution while lowering costs.<br><br>Sulfree™ products are organic, friendly to the environment, and specifically designed to remove odor-causing chemicals including Hydrogen Sulfide and mercaptans. More information is available at http://www.freshawl.comThu, 08 May 2008 14:10:44 GMTFreshAWLhttp://www.wef.org/TechnicalDiscussions/Topic8854-16-1.aspxThanks for the info guys, much appreciated!Tue, 15 Apr 2008 06:19:23 GMTDennishttp://www.wef.org/TechnicalDiscussions/Topic8854-16-1.aspxYou might want to consider dosing an iron salt upstream in the force main. While this will not get rid of the sulfide it will precipitate it as ferrous sulfide and you will be less likely to get releases of the odorous H2S.</P><P>DavidJenkinsSun, 13 Apr 2008 20:50:39 GMTd jenkinshttp://www.wef.org/TechnicalDiscussions/Topic8854-16-1.aspxFurther to my last you will need to know what level of sulfides is present in the influent. High sulfides can slow the lagoon system down and generally a derating factor has to be applied.</P><P>Regards</P><P>TerryFFri, 11 Apr 2008 19:02:10 GMTTerryFhttp://www.wef.org/TechnicalDiscussions/Topic8854-16-1.aspxYou are going to need to know the following as a minimum.</P><P>Detention time: </P><P>Depth</P><P>Flow</P><P>Loadings: BOD, SS</P><P>Minimum daily pond temperature</P><P>Once you have all this data a reasonable assessment on how well the lagoons may perform can be determined.</P><P>Many states publish minimum acceptable design criteria for BOD5/acre/day , detention times , depths etc. These will vary depending on your latitude.</P><P>Regards</P><P>TerryFFri, 11 Apr 2008 18:59:46 GMTTerryFhttp://www.wef.org/TechnicalDiscussions/Topic8854-16-1.aspxThose are unknowns at this time. The lagoons were constructed without a permit, so that process would have to be done too.Fri, 11 Apr 2008 10:24:38 GMTDennishttp://www.wef.org/TechnicalDiscussions/Topic8854-16-1.aspxCan you give us some details on the lagoon, depth , volume , pre treatment etc?Some lagoons can work quite well in terms of BOD reduction but TSS is often an issue.</P><P>Regards</P><P>Terry FThu, 10 Apr 2008 06:21:28 GMTTerryFhttp://www.wef.org/TechnicalDiscussions/Topic8854-16-1.aspxWe may have to take over a private lagoon. I was wondering if there were anything special to consider if the influent is always high in H2S? The reason for the high H2S levels (we believe) is due to an extremely long detention time in both the force mains from each home's grinder pump to the subdivisions pump station, and also in the force main that carries all that collected waste to our system some 1.9 miles away! Another problem is that there are only 17 homes on the system, so LOW flow.... The TSS' and BOD's are typically in the 300mg/L range, so no problem there, pH's are 7.5 ish...</P><P>The lagoons came in to play when the subdivision couldn't comply with our pre- arranged agreement, and took it upon themselves to build and operate a lagoon! Now that the Department of Natural Resources has gotten involved, we may end up taking it all over.</P><P>We have an activated sludge plant and no lagoon experience, so just looking for things we should consider, while exploring all options. </P><P>Thanks,Wed, 09 Apr 2008 18:19:31 GMTDennis