topic Fine Bubble Diffuser for Wastewater Treatment Plant in Water Utilities Questions https://community.esri.com/t5/water-utilities-questions/fine-bubble-diffuser-for-wastewater-treatment/m-p/616702#M1521 <HTML><HEAD></HEAD><BODY><SPAN>Dear all</SPAN><BR /><BR /><SPAN>Previously, my plant was using floating aerators for aeration.&nbsp; The results were satisfactory.&nbsp; However, as a cost saving initiative, those aerators were replaced with fine bubble diffusers which were claimed to consume less energy than the aerators.</SPAN><BR /><BR /><SPAN>The air is provided by two blowers with each 45 kW and 30 m3 per min air flow capacity.&nbsp; The air is however very hot, measured at least 84 deg.C in the supply pipe.&nbsp; You cannot touch the pipes, they are very hot.&nbsp; If you pour water on the pipe, some steam will form.&nbsp; The results of the treatment are bad, with few parameters were off target, not like those results when using aerators.</SPAN><BR /><BR /><SPAN>We are planning to reuse the aerators to improve the results, or install an aftercooler to cool down the air.&nbsp; I suspect that hot air is the culprit.&nbsp; My questions are:</SPAN><BR /><BR /><SPAN>1.&nbsp; Can hot air kills bacteria in the water?</SPAN><BR /><BR /><SPAN>2.&nbsp; Does hot air provides less oxygen?</SPAN><BR /><BR /><SPAN>Thanks and best regards.</SPAN></BODY></HTML> Tue, 03 Jun 2014 00:33:52 GMT HishamHashim 2014-06-03T00:33:52Z Fine Bubble Diffuser for Wastewater Treatment Plant https://community.esri.com/t5/water-utilities-questions/fine-bubble-diffuser-for-wastewater-treatment/m-p/616702#M1521 <HTML><HEAD></HEAD><BODY><SPAN>Dear all</SPAN><BR /><BR /><SPAN>Previously, my plant was using floating aerators for aeration.&nbsp; The results were satisfactory.&nbsp; However, as a cost saving initiative, those aerators were replaced with fine bubble diffusers which were claimed to consume less energy than the aerators.</SPAN><BR /><BR /><SPAN>The air is provided by two blowers with each 45 kW and 30 m3 per min air flow capacity.&nbsp; The air is however very hot, measured at least 84 deg.C in the supply pipe.&nbsp; You cannot touch the pipes, they are very hot.&nbsp; If you pour water on the pipe, some steam will form.&nbsp; The results of the treatment are bad, with few parameters were off target, not like those results when using aerators.</SPAN><BR /><BR /><SPAN>We are planning to reuse the aerators to improve the results, or install an aftercooler to cool down the air.&nbsp; I suspect that hot air is the culprit.&nbsp; My questions are:</SPAN><BR /><BR /><SPAN>1.&nbsp; Can hot air kills bacteria in the water?</SPAN><BR /><BR /><SPAN>2.&nbsp; Does hot air provides less oxygen?</SPAN><BR /><BR /><SPAN>Thanks and best regards.</SPAN></BODY></HTML> Tue, 03 Jun 2014 00:33:52 GMT https://community.esri.com/t5/water-utilities-questions/fine-bubble-diffuser-for-wastewater-treatment/m-p/616702#M1521 HishamHashim 2014-06-03T00:33:52Z