Water Environment Federation (WEF) Discussion ForumsWater Environment Federation (WEF) Discussion Forumshttp://www.wef.org/TechnicalDiscussions/jfuller@wef.orgFri, 21 Nov 2008 17:27:40 GMT20http://www.wef.org/TechnicalDiscussions/Topic7578-19-1.aspxTo produce that water costs the same for everyone. To treat it would probably cost more than normal domestic waste. I wouldn't give them a nickel off.Fri, 12 Sep 2008 15:19:18 GMTJerryhttp://www.wef.org/TechnicalDiscussions/Topic7578-19-1.aspxTo avoid the problems associated with surfactants, etc., I suggest pretreatment be installed at the commercial laundaries. But in order to document the evaporation loss the industry has to have a flow meter on the effluent end that accounts for all discharges to the sewer. I have a commercial laundary that desires to have such a credit, but they cannot account for all of their discharges via flow meter; at least not unless they spend a decent amount of money which they currently do not want to do. If they can document the loss, then I am more than willing to recommend they receive a credit.</P><P>~EgadzFri, 12 Sep 2008 13:37:34 GMTEgadzhttp://www.wef.org/TechnicalDiscussions/Topic7578-19-1.aspxWe have implemented a sewer Adjustment Program that allows commercial, industrial, and institutional customers the opportunity to apply for adjustments to their sewer consumption due to water used in their product,cooling towers, irrigation, etc. There are fees associated with the program in order to recover our cost of administering the program and to help discourage every small user from trying to take advantage of the program. Here is a link to the program.</P><P><A href="http://www.lynchburgva.gov/Index.aspx?page=101">http://www.lynchburgva.gov/Index.aspx?page=101</A></P><P>Go to the bottom of the page to the Sewer Adjustment Program and click on prgram information.Tue, 19 Aug 2008 15:23:39 GMTtaph20http://www.wef.org/TechnicalDiscussions/Topic7578-19-1.aspxIf you use wastewater meters to measure the effluent from an industrial/commercial laundry, be aware of the limitations of the wastewater measuring device. The material in laundry effluent such as surfactants, other foaming agents, temperature,and flow variations can greatly impact the measuring capabilities of ultrasonic flow devices and mag meters. We have a comprehensive industrial effluent billing program and use wastewater meters in many industrial applications. Attaining accurate industrial laundry effluent flow measurements are one of our challenges. Tue, 11 Dec 2007 12:18:28 GMTpotwlabhttp://www.wef.org/TechnicalDiscussions/Topic7578-19-1.aspxJeff and John both make excellent points (as we've come to expect.)</P><P>One other direction that could be considered is a flow meter on the discharge piping. This would give the utility a fairly accurate number upon which to bill sewer charges.Thu, 29 Nov 2007 12:26:12 GMTD Shulmisterhttp://www.wef.org/TechnicalDiscussions/Topic7578-19-1.aspx I think Jeff makes a good point about the water loss, but there is another factor you may need to consider : large commercial laundries also tend to discharge very hot water, at a high pH. One local village I know of used to get pHs of 10 - 11 in the collection system, and a temp. close to 200 deg. F. In another case, I know of a laundry that routinely dumps slug loads of solvents into the sewer system, whenever they wash the rags used to clean the printing presses of a regional newspaper. The impacts of these things at the "back end", may warrant surcharges that offset the savings in water usage.Tue, 27 Nov 2007 18:50:37 GMTJohn Sansalonehttp://www.wef.org/TechnicalDiscussions/Topic7578-19-1.aspxThe Sanitation Districts of Los Angeles County in California does give almost any kind of credit that can be demonstrated. Laundries do in fact evaporate water in that the washed clothing, towels, sheets, etc. go into the dryers in a wet state, where all of that water is evaporated. I don't know what fraction of the purchased water, however, is in fact evaporated. That would probably vary, depending upon how wet the material is when it goes into the dryers, which would in of itself depend on what the fabric type is. Other equipment can also be allowed an evaporation credit, such as boilers, cooling towers, etc.Tue, 27 Nov 2007 17:02:14 GMTJeff Naumannhttp://www.wef.org/TechnicalDiscussions/Topic7578-19-1.aspxAre there any utilities that give a discount on the sewer charges because of water that evaporates in the business process? I have some large commercial laundries that claim that 15% or 25% of the water entering the facility is evaporated and does not enter the wastewater system - therefore the wastewater bill should be based on that reduced amount - not on the amount of water that goes through the meter. </P><P>Are there utilities that provide this type of "evaporation credit"? Does your sewer ordinance or your set of regulations address these circumstances? </P><P>Thanks!Tue, 27 Nov 2007 14:41:51 GMT01141046