As the table Odorous Compounds In Wastewater shows, three major odorous compounds naturally occurring in the treatment process, hydrogen sulfide, amines and mercaptans, are detectable by the human nose at extremely low concentrations. Most of the odors detected in and around wastewater treatment plants are signals that nature’s treatment process is working organic matter is decomposing and pollutants are being removed from the wastewater. Wastewater operators routinely check the digester pressure relief valves to make sure they are not venting to the outdoors and that the waste gas burner is performing optimally. Chlorine gas is used to disinfect the non-potable water which is used daily to wash down all areas of the plant and control floating odor causing scum in the various areas where it can accumulate. On days when local weather conditions contribute to enhancing odors, WWTP staff increase the concentration of the odor neutralizing liquids in the misters. The wastewater treatment operators’ daily routine includes keeping all of the misting system components working properly. These odor neutralizers are atomized into the air via high pressure fogging systems and fogging fans. Odor neutralizing liquids break down the foul smelling chemical compounds in the biogases at each site. Misting systems with odor neutralizing liquids are located at eight locations in the WWTP. Ferrous chloride molecules capture hydrogen sulfide molecules thereby forming insoluble compounds which precipitate out of the waste stream. Please visit our CoMo Recycle & Trash App for tips on disposal of other items.Ī ferrous chloride solution is added to the raw wastewater before it enters the primary clarifiers to reduce odors at that treatment stage. Plastic bags can be recycled at local grocery and box stores. #SMART TRASH CANS AT STAPLES WINDOWS#It is not necessary to remove staples, address windows or packing tape from the fibers, but customers should remove plastic wraps and liners. Containers should be lightly rinsed.īoxes should be flattened. Whether via curbside collection or at a large bin at an apartment building or a drop-off site, residents are asked to use the appropriate container to keep the streams from commingling.Ĭontainers such as glass bottles and jars, aluminum and steel cans and rigid plastics - plastics you cannot wrap around your fingers - can be recycled in Columbia. In Columbia, fibers and containers are collected separately. If there are too many different materials mixed together and the bundle can’t be hand sorted efficiently, it ends up being sent to the landfill.įor the Solid Waste Utility’s dual-stream program to work most productively, correct separation in the home, office or community is an essential first step. Contamination - putting the wrong items in the wrong recycling receptacle - makes the system counterproductive. But recycling can be inefficient and costly if it is not done correctly. Still very valuable pursuits, but not for me as a particular person.Recycling provides numerous benefits to our community and environment, including conservation of resources and reduction of greenhouse gas emissions. Obviously and of course - but I think for me as just a person, I had reached the limit of my own ability to engage certain mental processes that I felt were limiting. I'm not saying the problem-solving mind isn't valuable. And I did not engage that problem-solving mind at all. And I would tell people I left design because I was tired of solving problems. So it's very cognitive - very prefrontal cortex. The nutshell answer that I often give people is that design is often described as creative problem solving. I think it's why I eventually left design. So I think those were the kinds of questions that interested me or became increasingly of greater interest to me as I pursued design. So for example, how does racism get inscribed into our built environment in our institutions? It actually runs pretty deep if you really want to delve into the social and material processes of forming.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |