{"id":1711,"date":"2022-03-14T12:35:49","date_gmt":"2022-03-14T11:35:49","guid":{"rendered":"https:\/\/active-oxygens-sustainability.evonik.com\/artikel\/wasseraufbereitung-in-memphis\/"},"modified":"2022-04-18T18:42:54","modified_gmt":"2022-04-18T16:42:54","slug":"water-treatment-in-memphis","status":"publish","type":"article","link":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/articles\/water-treatment-in-memphis\/","title":{"rendered":"Water treat\u00adment in Memphis"},"content":{"rendered":"\n
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Pure clean\u00adli\u00adness! Water treat\u00adment in Memphis<\/h1>\n

In Memphis, Tennessee, much of the waters of the Missis\u00adsippi river are brown in color and carry high levels of organ\u00adics from agri\u00adcul\u00adtural uses. This makes waste\u00adwater treat\u00adment in these areas a partic\u00adu\u00adlar chal\u00adlenge, and conven\u00adtional disin\u00adfec\u00adtion plants are not up to the task. To this end, the city of Memphis chose to deploy an alter\u00adna\u00adtive tech\u00adnol\u00adogy based on peracetic acid several years ago. Evonik Active Oxygens\u2019 process not only kills the pathogens in the water, but is also sustain\u00adable in many regards.<\/span><\/span><\/h4>\n<\/div>\n\n\n\n
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W<\/span>hat do you think of when you hear \u201cMemphis\u201d? Elvis Pres\u00adley or Johnny Cash? Pleas\u00adant-tast\u00ading tap water is prob\u00ada\u00adbly not one of the first things you asso\u00adciate with the city on the Missis\u00adsippi in south-west Tennessee. However, Memphis\u2019 drink\u00ading water is of partic\u00adu\u00adlarly high qual\u00adity. This is due to the natural reser\u00advoirs located hundreds of meters below the Earth\u2019s surface, sand\u00adwiched between layers of clay and sand. This sand acts as a natural filter and helps remove contaminations.<\/p>\n

However, the water qual\u00adity in the nearby Missis\u00adsippi river is far lower. Indus\u00adtrial waste\u00adwater gener\u00adated during agri\u00adcul\u00adtural processes and cotton process\u00ading is fed into the river, thus posing a big chal\u00adlenge for the Memphis waste\u00adwater treat\u00adment plant. This waste\u00adwater contains large quan\u00adti\u00adties of organic waste that is discharged into the river and turns it a cloudy broth of coffee-brown color.<\/p>\n<\/div>\n\n\n\n

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As such, conven\u00adtional treat\u00adment tech\u00adnolo\u00adgies cannot simply be deployed for this water. For exam\u00adple, the water color is too dark for UV tech\u00adnol\u00adogy to be used to disin\u00adfect it. Chem\u00adi\u00adcals contain\u00ading chlo\u00adrine or ozone are also unsuit\u00adable for disin\u00adfect\u00ading this water, as the organic compounds simply absorb large quan\u00adti\u00adties of these chem\u00adi\u00adcals \u2013 mean\u00ading that extreme concen\u00adtra\u00adtions would have to be used in order to achieve the desired results. In addi\u00adtion, chem\u00adi\u00adcal agents contain\u00ading chlo\u00adrine would react with the organic waste and form carcino\u00adgenic compounds and there\u00adfore cannot be used in the requi\u00adsite concentrations.<\/p>\n

The city of Memphis there\u00adfore began look\u00ading for a differ\u00adent solu\u00adtion and invited tenders from providers of alter\u00adna\u00adtive disin\u00adfec\u00adtion tech\u00adnolo\u00adgies around ten years ago.<\/p>\n<\/div>\n\n\n\n

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Disin\u00adfec\u00adtion with peracetic acid \u2013 an impres\u00adsive solution<\/strong><\/h5>\n

Amongst the appli\u00adcants was Perox\u00ady\u00adChem \u2013 in 2020 acquired by Evonik and now inte\u00adgrated into Evonik Active Oxygens busi\u00adness line \u2013 with a sugges\u00adtion that impressed the deci\u00adsion-makers in Memphis. The key part of the process was the construc\u00adtion of a produc\u00adtion plant for peracetic acid (PAA)<\/a> on leased land next to the waste\u00adwater treat\u00adment plant. This enables the disin\u00adfec\u00adtant agent to be manu\u00adfac\u00adtured in direct prox\u00adim\u00adity to the waste\u00adwater treat\u00adment plant and fed into it via a special dosing system.<\/p>\n

Compared to conven\u00adtional disin\u00adfec\u00adtion meth\u00adods, using a peracetic acid solu\u00adtion has many advan\u00adtages. For exam\u00adple, the fact that PAA decom\u00adposes into oxygen, water and vine\u00adgar when used and thus does not repre\u00adsent a hazard to human health or the envi\u00adron\u00adment \u2013 unlike agents contain\u00ading chlo\u00adrine. And it is also cost-effi\u00adcient in deployment.<\/p>\n<\/div>\n\n\n\n

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\u201cThe bene\u00adfit of peracetic acid compared to other conven\u00adtional meth\u00adods is that a signif\u00adi\u00adcantly smaller amount is required to disin\u00adfect the water,\u201d explains Philip Block, Tech\u00adnol\u00adogy Direc\u00adtor Specialty Market and Water Treat\u00adment at Evonik Active Oxygens. \u201cAs a result, we only need around one sixth of the amount of peracetic acid compared to agents contain\u00ading chlo\u00adrine for this wastewater.\u201d<\/p>\n

The PAA plant in Memphis uses the VIGOROX\u00ae WWT II prod\u00aduct line from Evonik Active Oxygens. \u201cThe fact we were able to convince the city of our prod\u00aduct and all the asso\u00adci\u00adated services is a huge success for us as a producer of PAA with sustain\u00adabil\u00adity<\/a> in mind,\u201d says Block. \u201cAlthough we only use PAA in small and envi\u00adron\u00admen\u00adtally compat\u00adi\u00adble concen\u00adtra\u00adtions, we still need around 30 million pounds (just less than 14,000 metric tons) of the prod\u00aduct each year to supply the treat\u00adment plant in Memphis.\u201d<\/p>\n<\/div>\n\n\n\n

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Ecolog\u00adi\u00adcally and econom\u00adi\u00adcally sustainable<\/h5>\n

Memphis is also bene\u00adfit\u00ading from the sustain\u00adable nature of the coop\u00ader\u00ada\u00adtion, both from an ecolog\u00adi\u00adcal and an economic standpoint.<\/p>\n

The PAA dosing system \u2026<\/strong><\/p>\n

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  • \u2026 is inte\u00adgrated into the Memphis waste\u00adwater treat\u00adment process and contributes to clean\u00ading the wastewater.<\/li>\n
  • \u2026 provides reli\u00adable disin\u00adfec\u00adtion and is effec\u00adtive against E. coli and other fecal bacte\u00adria, even in low doses.<\/li>\n
  • \u2026 is more cost-effi\u00adcient than conven\u00adtional tech\u00adnolo\u00adgies (e.g., UV or chlo\u00adrine-based procedures).<\/li>\n
  • \u2026 has very short trans\u00adporta\u00adtion routes due to the direct prox\u00adim\u00adity of the PAA produc\u00adtion plant and the waste\u00adwater treat\u00adment plant.<\/li>\n
  • \u2026 creates new jobs in Memphis, as staff are required to oper\u00adate the PAA produc\u00adtion plant.<\/li>\n
  • \u2026 is an addi\u00adtional source of income for Memphis from the lease and commissions.<\/li>\n<\/ul>\n

    Follow\u00ading a devel\u00adop\u00adment and construc\u00adtion phase last\u00ading nine years, includ\u00ading compre\u00adhen\u00adsive labo\u00adra\u00adtory and field tests, the plant has been up and running as a fully commer\u00adcial oper\u00ada\u00adtion since the end of 2019. Evonik Active Oxygens is supply\u00ading not only the Memphis waste\u00adwater treat\u00adment plant, but also other customers in the south-east USA with peracetic acid from the new produc\u00adtion plant.<\/p>\n<\/div>\n\n\n\n

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    <\/div>","protected":false},"excerpt":{"rendered":"

    The waste\u00adwater treat\u00adment plant in the USA uses the sustain\u00adable chem\u00adi\u00adcal produced right next door. The tech\u00adnol\u00adogy is partic\u00adu\u00adlarly cost-effec\u00adtive and resource-efficient.<\/p>\n","protected":false},"featured_media":1596,"template":"","article-category":[78],"article-tag":[103,87],"acf":{"top_article":false},"yoast_head":"\nMemphis relies on peracetic acid to treat wastewater<\/title>\n<meta name=\"description\" content=\"The city in Tennessee has built a peracetic acid production plant. 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The technology is particularly cost-effective and resource-efficient.","permalink":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/articles\/water-treatment-in-memphis\/"},"term":{"title":"Water treat\u00adment in Memphis","permalink":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/articles\/water-treatment-in-memphis\/","categories":"<li class=\"tag-line__item\" data-scroll>\n <a href=\"https:\/\/active-oxygens-sustainability.evonik.com\/en\/article-tag\/peracetic-acid\/\"\n alt=\"View all posts in peracetic acid\">\n #peracetic acid<\/a><\/li> <li class=\"tag-line__item\" data-scroll>\n <a href=\"https:\/\/active-oxygens-sustainability.evonik.com\/en\/article-tag\/water-treatment\/\"\n alt=\"View all posts in water treatment\">\n #water treatment<\/a><\/li> "},"_links":{"self":[{"href":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/wp-json\/wp\/v2\/article\/1711"}],"collection":[{"href":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/wp-json\/wp\/v2\/article"}],"about":[{"href":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/wp-json\/wp\/v2\/types\/article"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/wp-json\/wp\/v2\/media\/1596"}],"wp:attachment":[{"href":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/wp-json\/wp\/v2\/media?parent=1711"}],"wp:term":[{"taxonomy":"article-category","embeddable":true,"href":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/wp-json\/wp\/v2\/article-category?post=1711"},{"taxonomy":"article-tag","embeddable":true,"href":"https:\/\/active-oxygens-sustainability.evonik.com\/en\/wp-json\/wp\/v2\/article-tag?post=1711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}