توسعه مدل تصفیه فاضلاب شهری با استفاده از نانو حباب با تاکیدی بر افزایش راندمان تصفیه فاضلاب

ﺗﺎﻣﯿﻦ اﮐﺴﯿﮋن در راﮐﺘﻮرﻫﺎی ﻫﻮادﻫﯽ از ﺟﻤﻠﻪ ﻋﻮاﻣﻞ ﻣﻬﻢ در ﻓﺮاﯾﻨﺪ ﻟﺠﻦ ﻓﻌﺎل در ﺗﺼﻔﯿﻪ ﻓﺎﺿﻼب ﺷﻬﺮی اﺳﺖ. در اﯾﻦ ﻣﻄﺎﻟﻌﻪ، از ﻧﺎﻧﻮ ﺣﺒﺎب ﺑﺮای ﺗﺎﻣﯿﻦ اﮐﺴﯿﮋن در راﮐﺘﻮر ﻫﻮادﻫﯽ اﺳﺘﻔﺎده ﺷﺪه اﺳﺖ و ﻋﻤﻠﮑﺮد آن در ﺑﻬﺒﻮد راﻧﺪﻣﺎن ﺗﺼﻔﯿﻪ ﻓﺎﺿﻼب، ﮐﺎﻫﺶ ﻣﺼﺮف اﻧﺮژی، ﮐﺎﻫﺶ ﻣﻘﺪار ﻟﺠﻦ ﻣﺎزاد و ﺗﺄﺛﯿﺮ آن ﺑﺮ ﻋﻮاﻣﻞ زﯾﺴﺖ ﻣﺤﯿﻄﯽ ﻣﻮرد ارزﯾﺎﺑﯽ ﻗﺮار ﮔﺮﻓﺘﻪ اﺳﺖ. ﺑﺮای ﺗﻮﻟﯿﺪ ﻧﺎﻧﻮﺣﺒﺎب از ﯾﮑﺪﺳﺘﮕﺎه ژﻧﺮاﺗﻮر ﻧﺎﻧﻮ ﺣﺒﺎب اﺳﺘﻔﺎده ﺷﺪه اﺳﺖ ﮐﻪ ﺗﺎﯾﯿﺪات ﻻزم را از ﺳﺘﺎد ﻧﺎﻧﻮ درﯾﺎﻓﺖ ﻧﻤﻮده اﺳﺖ و اﺑﻌﺎد و ﻣﺸﺨﺼﺎت ﺣﺒﺎبﻫﺎی ﺗﻮﻟﯿﺪی ﻣﻄﺎﺑﻖ ﺑﺎ ﻣﺸﺨﺼﺎت ﻧﺎﻧﻮ ﺣﺒﺎبﻫﺎ را دارد. ﻧﺘﺎﯾﺞ ﻧﺸﺎن ﻣﯽدﻫﻨﺪ ﮐﻪ اﺳﺘﻔﺎده از ﻧﺎﻧﻮ ﺣﺒﺎب، در ﻣﻘﺎﯾﺴﻪ ﺑﺎ ﻣﺎﮐﺮو ﺣﺒﺎب ﺑﺎﻋﺚ اﻓﺰاﯾﺶ ﻏﻠﻈﺖ اﮐﺴﯿﮋن در راﮐﺘﻮر ﻫﻮادﻫﯽ ﺗﺎ 3 ﻣﯿﻠﯽﮔﺮم در ﻟﯿﺘﺮ، ﮐﺎﻫﺶ 18 درﺻﺪی ﻣﺼﺮف اﻧﺮژی، ﮐﺎﻫﺶ 10 درﺻﺪی ﺳﺮﻣﺎﯾﻪ ﮔﺬاری اوﻟﯿﻪ در ﺗﺼﻔﯿﻪﺧﺎﻧﻪ ﻓﺎﺿﻼب و ﮐﺎﻫﺶ 15 درﺻﺪی ﻫﺰﯾﻨﻪﻫﺎی ﺑﻬﺮهﺑﺮداری ﻣﯽﺷﻮد. ﻫﻤﭽﻨﯿﻦ، اﺳﺘﻔﺎده از ﻧﺎﻧﻮ ﺣﺒﺎبﻫﺎ ﻣﻨﺠﺮ ﺑﻪ اﻓﺰاﯾﺶ ﺑﺎزدﻫﯽ ﺣﺬف ﻣﻮاد آﻻﯾﻨﺪه آﻟﯽ و ﮐﺎﻫﺶ زﻣﺎن ﻣﺎﻧﺪ ﻫﯿﺪروﻟﯿﮑﯽ در ﺳﯿﺴﺘﻢ ﻫﻮادﻫﯽ ﺷﺪه اﺳﺖ. در ﻧﺘﯿﺠﻪ، اﯾﻦ روش ﺑﺎﻋﺚ ﮐﺎﻫﺶ اﺑﻌﺎد واﺣﺪﻫﺎی ﺗﺼﻔﯿﻪ ﻓﺎﺻﻼب ﻣﯽﺷﻮد ﮐﻪ ﺑﻪ دﻟﯿﻞ اﻓﺰاﯾﺶ راﻧﺪﻣﺎن ﺣﺬف ﻣﻮاد آﻟﯽ و ﮐﺎﻫﺶ زﻣﺎن ﻫﯿﺪروﻟﯿﮑﯽ ﻣﯽﺑﺎﺷﺪ. ﻣﺪل اراﺋﻪ ﺷﺪه ﺑﺮ اﺳﺎس ﻧﺎﻧﻮ ﺣﺒﺎبﻫﺎی ﻫﻮا در ﻓﺮآﯾﻨﺪ ﻫﻮادﻫﯽ ﺑﯿﻮراﮐﺘﻮرﻫﺎ، ﺑﻪﻋﻨﻮان ﯾﮏ ﻓﻨﺎوری ﺟﺪﯾﺪ و ﻧﻮآوراﻧﻪ در ﺣﻔﻆ، ﭘﺎﮐﺴﺎزی و ﭘﺎﯾﺪاری ﻣﺤﯿﻂ زﯾﺴﺖ ﺑﺴﯿﺎر ﻣﻮﺛﺮ ﻣﯽﺑﺎﺷﺪ.

development of urban wastewater treatment model using nano bubbles with an emphasis on increasing the efficiency of wastewater treatment

activated sludge process is one of the most widely used methods of urban wastewater treatment. the purpose of this study is to use nanobubbles to supply oxygen to the aeration reactor in the activated sludge process and to evaluate its performance in terms of increasing the efficiency of wastewater treatment, reducing energy consumption, reducing the amount of excess sludge and its impact on environmental factors. the results showed that the use of nano-bubble compared to the use of macro-sized bubbles increased the concentration of dissolved oxygen in the aeration reactor up to 3 mg/liter, 18% reduction in energy consumption, 10% reduction in the initial investment in the construction of the wastewater treatment plant. 15% reduction in operating costs of the sewage treatment plant. increasing the efficiency of removing organic pollutants and reducing the hydraulic retention time in the aeration system, reducing the size of the treatment plant by 10% due to the increase in the efficiency of removing organic substances, and as a result, reducing the hydraulic time and reducing the same amount of land for the construction of the aeration reactor and facilities for the production and distribution of air in the aeration reactor. the presented model, which is obtained by using nano-bubbles in the aeration process of bioreactors, is very effective as a new and innovative technology in preserving, cleaning, and sustaining the environment.