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نوع مقاله : مقالات پژوهشی

نویسندگان

1 گروه مهندسی آب دانشگاه علوم کشاورزی و منابع طبیعی گرکان

2 گروه مهندسی آب دانشگاه تبریز

چکیده

زمینه و هدف:تصفیه و بازچرخش فاضلاب­ها، مهم­ترین راهکار در ﻛﺸﻮرﻫﺎی واقع در مناطق ﺧﺸﻚ و ﻧﻴﻤﻪ­ﺧﺸﻚ ﺟﻬﺎن از ﺟﻤﻠﻪ اﻳﺮان در ﺗﻮﻟﻴﺪ ﻣﺤﺼﻮﻻت ﻛﺸﺎورزی به­عنوان یک ﻣﻨﺒﻊ ﻣﻄﻤﺌﻦ و پایدار می­باشد. در کشور ما استفاده مجدد از پساب تصفیه­شده در حال تبدیل شدن به یک روش مورد تأیید جهت برگشت اجزای مفید فاضلاب به چرخه آب است، لذا مطالعه حاضر با هدف بررسی کیفیت پساب خروجی فاضلاب تصفیه‌خانه شهری تربت‌حیدریه جهت مصارف آبیاری و کشاورزی انجام شد.
مواد و روش‌ها: در این پژوهش به بررسی آنالیز شیمیایی و میکروبی پساب فاضلاب تصفیه­شده شهری تصفیه­خانه تربت­حیدریه برای مصارف کشاورزی در منطقه مذکور در سال 1394 پرداخته شد. پارامترهای خروجی پساب شامل TSS، BOD5، COD، کلیفرم، نیترات، پارامتر کدورت، سولفات، فسفات، کلراید و ترکیبات غیر آلی سمی مورد بررسی قرار گرفتند. تجزیه و تحلیل داده­ها با استفاده از نرم‌افزار DSTAT و حجم آماری 45 نمونه انجام شد.
یافته‌ها: نتایج آنالیز شیمیایی پساب فاضلاب نشان داد که میزان نیترات موجود در پساب به­ترتیب بر اساس استاندارد سازمان محیط­زیست (WHO) و FAO بالاتر از حد مجاز قرار داشته و برای استفاده در مصارف کشاورزی بایستی تمهیداتی لحاظ گردد.
نتیجه‌گیری: بر اساس نتایج، کل جامدات محلول، اکسیژن محلول، اکسیژن مورد نیاز بیولوژیکی، اکسیژن مورد نیاز شیمیایی، کلیفرم، کاتیون­های کلسیم، منیزیم و سدیم و آنیون­های سولفات، فسفات و کلراید در پساب تصفیه‌شده تصفیه‌خانه در حد استاندارد آبیاری محصولات می­باشد و برای کشاورزی محصولاتی مانند غلات و گیاهان یک‌ساله ساقه­دار مانعی ایجاد نمی­کنند.

کلیدواژه‌ها

عنوان مقاله [English]

Evaluation of Physical, Chemical and Biologic Properties of Torbat-Heydarieh's Municipal Wastewater Treatment Plant for Agricultural Uses

نویسندگان [English]

  • Yahya Choopan 1
  • Somayeh Emami 2

1 Water Engineering Department of Gorgan University

2 Water Engineering Department of Tabriz University

چکیده [English]

Background and Objective: Since, the treated effluents can be used as a reliable and sustainable source for agricultural activities, the treatment and recycling of wastewater is the most important solution in the arid and semi-arid regions of the world, such as Iran. a In Iran, the reuse of treated wastewater is becoming a validated method to recycle useful ingredients  of the wastewater to the water cycle. Therefore, the present study was conducted to determine the quality of Torbat-Heydarieh's municipal wastewater treatment plant effluent for irrigation and agricultural uses.
 
Method: In this study, the chemical and microbiological analysis of Torbat-Heydarieh's municipal sewage treatment plant effluent has been investigated for agricultural uses in the mentioned method in 2015 year. The considered output parameters of the wastewater were  (Total Suspended Solid)TSS, Biochemical Oxygen Demand (BOD5), COD, Coliform, nitrate, Turbidity parameter, sulfate, phosphate, chloride and poisonous non-organic compounds. Data analysis was performed using DSTAT software and statistical volume of 45 samples.
 
Findings: The results of the chemical analysis of municipal sewage showed that the amount of nitrate in the wastewater is higher than the standards of World Organization Health (WHO) and (Food and agriculture Organization) FAO. Therefore, appropriate strategies should be considered for agricultural applications.
 
Conclusion: The results of the chemical analysis of municipal sewage showed that total TDS, dissolved Oxygen, BOD, COD, caloric, magnesium, sodium and calcium, phosphate and chloride in sewage treatment plant are in standard range.

کلیدواژه‌ها [English]

  • Biologic
  • Agricultural Uses
  • Municiple Wastewater
  • Nitrate
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