بررسی کارایی تالاب مصنوعی سطحی حاوی گیاه نی در حذف برخی پیراسنجه-های شیمیایی فاضلاب شهرک صنعتی بوعلی

محورهای موضوعی : آلودگی محیط زیست (آب و فاضلاب)

فرشته پی نبر ¹ , سهیل سبحان اردکانی ² , مهدی ریاحی خرم ³

1 - دانش‌آموخته کارشناسی ارشد محیط‌زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران.
2 - دانشیار گروه محیط‌زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران
3 - استادیار گروه محیط‌زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران.

تاریخ دریافت : 1392/11/13 تاریخ پذیرش : 1393/10/30 تاریخ انتشار : 1398/05/01

کلید واژه: شهرک صنعتی بوعلی همدان, گیاه نی, COD, TSS, تالاب مصنوعی سطحی,

چکیده مقاله :

زمینه و هدف: ﺍﻧﺘﺨﺎﺏ ﻓﻨﺎﻭﺭﻱ ﻣﻨﺎﺳﺐ برای تصفیه فاضلاب ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ ﺷﺮﺍﻳﻂ ﺁﺏ ﻭ ﻫﻮﺍﻳﻲ، ﺍﻗﺘﺼﺎﺩﻱ ﻭ ﺍﺟﺘﻤﺎﻋﻲ ﻫﺮ ﻣﻨﻄﻘﻪ ﺣﺎﻳﺰ ﺍﻫﻤﻴﺖ ﺍﺳﺖ. ﺭﻭﺵ ﻃﺒﻴﻌﻲ ﭘﺎﻻﻳﺶ ﺁﺏﻫﺎﻱ ﺁﻟﻮﺩﻩ ﺷـﻬﺮﻱ در تالاب مصنوعی حاوی نی، ﻋﻼﻭﻩ ﺑﺮ ﺭﺍﻫﺒﺮﻱ ﺳﺎﺩﻩ، نیاز به ﻓﻨﺎﻭﺭﻱ ساده ﻭ ﻣﺼﺮﻑ ﺍﻧﺮﮊﻱ ﻛﻢ ﺩﺭ ﻣﻘﺎﻳﺴﻪ ﺑﺎ ﺭﻭﺵﻫﺎﻱ ﻣﻌﻤﻮﻝ ﭘﺎﻻﻳﺶ، ﺭﻭﺷﻲ ﻣﻨﺎﺳﺐ ﺑﺮﺍﻱ ﺣﺬﻑ ﺁﻻﻳﻨﺪﻩﻫﺎ ﺍﺯ ﺁﺏ ﺑﻮﺩﻩ ﻛﻪ ﺩﺭ ﺍﺻﻼﺡ ﻭ ﺑﻬﺒﻮﺩ ﻣﺤﻴﻂ ﺯﻳﺴﺖ ﻧﻴﺰ ﻣﻮﺛﺮ ﺍﺳﺖ. بنابراین، این پژوهش با هدف بررسی کارایی حذف و یا کاهش برخی پیراسنجه های شیمیایی فاضلاب شهرک صنعتی بوعلی همدان به وسیله گیاه نی در تالاب مصنوعی سطحی انجام یافته است. روش بررسی: سه راکتور به صورت پایلوت به روش تالاب مصنوعی سطحی با زمان ماند دو روز ساخته شد. نمونه ها با استفاده از ظروف مخصوص نمونه برداری از ورودی و خروجی رآکتور برداشت و مطابق با روش های استاندارد آنالیز شد و در نهایت داده ها با استفاده از نرم افزار آماری SPSS مورد پردازش قرار گرفتند. یافته ها: نتایج بیانگر آن بود که کارایی حذف اکسیژن خواهی شیمیایی و کل جامدات معلق به ترتیب برابر با %75 و %80 بود. بحث و نتیجه گیری: اگرچه کارایی حذف پیراسنجه های مورد ارزیابی در تالاب مصنوعی سطحی حاوی گیاه نیطی زمان ماند دو روز قابل توجه می باشد، اما با توجه به بالابودن غلظت پیراسنجه ها در خروجی تالاب، فاضلاب تصفیه شده شهرک صنعتی بوعلی از شرایط استاندارد برای استفاده در سایر کاربری ها به ویژه کشاورزی برخوردار نیست.

چکیده انگلیسی:

Background and Objective: Selection of appropriate technologies for wastewater treatment according to climate, economic and social conditions is very important. The use of non-advanced technology with low energy consumption wastewater treatment systems such as a constructed wetland is cost effective and contributes to environmental reclamation. The aim of this study was to determine the efficiency of surface flow constructed wetland in the removal of COD and TSS parameters from Bu-Ali industrial town wastewater. Method: For the removal of COD and TSS parameters from Bu-Ali industrial town wastewater, three shallow artificial wetlands with retention time of 2 days were made as pilot. The samples were collected using specific containers from the input and output of the reactor and analyzed according to the standard methods. The obtained data were analyzed using the SPSS 18.0 statistical package. Findings: The results showed that the removal efficiencies of COD and TSS were 75% and 80% respectively. Discussion and Conclusion: Although the removal efficiencies of COD and TSS in the surface flow constructed wetland containing Phragmites australis are acceptable, the treated wastewater is not suitable for irrigation because of the high concentration of organic matter at the wetland output.

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