نوع مقاله : مقالات پژوهشی
نویسندگان
1 دانشجوی کارشناسی‌ارشد، مهندسى منابع طبیعى- محیط زیست، گروه علوم محیط زیست، موسسه آموزش عالی خردگرایان مطهر، مشهد، ایران
2 استادیار گروه علوم محیط زیست، موسسه آموزش عالی خردگرایان مطهر، مشهد، ایران
چکیده
زمینه و هدف: امروزه تولیدات صنعت مرغداری در سبد غذایی مردم، جایگاه ویژه‌ای را به خود اختصاص داده است . این صنعت علی رغم مزایای اقتصادی و افزایش روزافزون آن، چالش‌های زیست محیطی فراوانی ازجمله آلودگی هوا به همراه داشته است. هدف از انجام این مطالعه، ارزیابی آلودگی هوای مرغداری در یک دوره ی رشدی با استفاده از تکنیک‌های آماری و تعیین کارایی سیستم یونیزاسیون هیبریدی در کاهش آلاینده‌های هوای این صنعت می‌باشد.
مواد و روش ها: این تحقیق در یک مرغداری آزمایشی با استفاده از دستگاه یونیزاسیون بی‌پلار هیبریدی جهت کاهش ذرات معلق، آمونیاک، سولفید هیدروژن و میکروارگانیزم‌ها انجام گرفت. تاثیر سه پارامتر غلظت یون‌های منفی، میزان رطوبت و تهویه با دو سطح در دو تکرار بر کارایی سیستم مورد بررسی قرار گرفت. سپس داده‌ها با کمک نرم‌افزارهای SPSS و MSTAT-C و استفاده از روش‌های آماری آنووا و کروسکال والیس، در سطح معنی‌داری 1%، 5% و 10% تجزیه وتحلیل گردید.
یافته‌ها: نتایج نشان داد که بیشترین مقدار کاهش ذرات معلق (88/40% PM2.5 و 91/31% PM10) توسط دستگاه مذکور مربوط به تیمار3 (حداقل میزان رطوبت و حداکثر یون و تهویه خاموش) در سطح اطمینان 90% و 95% و 99% بوده است. بیشترین میزان کاهش آمونیاک نیز مربوط به تیمار 3 با میانگین رتبه 13/50و حذف کامل سولفیدهیدروژن مربوط به تیمار 4 (حداکثر یون، حداقل رطوبت و تهویه روشن) با میانگین رتبه 14/50در سطح معناداری 10% بود. بیشترین مقدار کاهش میکروارگانیزم‌ها نیز مربوط به روز سوم با درجه ی یونیزاسیون 7 کیلوولت، تهویه خاموش و رطوبت 30% (تیمار 3)، می‌باشد.
نتیجه گیری: این مطالعه نشان داد که با افزایش غلظت یون‌های منفی تولیدشده توسط دستگاه یونیزاسیون، تفاوت معناداری در کاهش آلاینده‌های مذکور توسط این سیستم در هوای مرغداری ایجاد می‌شود. لذا استفاده از سیستم یونیزاسیون بی‌پلار هیبریدی برای بهبود کیفیت هوای سالن‌های مرغداری، توصیه می‌گردد.
کلیدواژه‌ها
عنوان مقاله [English]
Determining the Efficiency of a Hybrid Bipolar Ionization System in Reducing Poultry Farm Air Pollution
نویسندگان [English]
- Mehri Mousavi Baygi 1
- Mitra Mohammadi 2
- Hamed Ramyar 2
1 Master's Student, Natural Resources-Environmental Engineering, Department of Environmental Sciences, Kheradgarayan Motahar Institute of Higher Education, Mashhad, Iran.
2 Assistant professor of Department of Environmental Sciences, Kheradgarayan Motahar Institute of Higher Education, Mashhad, Iran.
چکیده [English]
Background and Purpose: Poultry production is crucial in the global food supply chain. However, despite its economic benefits, the industry poses significant environmental challenges, notably air pollution. This study aims to evaluate air pollution in poultry farms throughout a growth cycle using statistical techniques and assess the effectiveness of a hybrid bipolar ionization system in mitigating air pollutants in this sector.
Materials and Methods: This research was carried out at an experimental poultry farm equipped with a hybrid bipolar ionization system to reduce particulate matter (PM), ammonia (NH₃), hydrogen sulfide (H₂S), and airborne microorganisms. The study examined the effects of three factors—negative ion concentration, humidity, and ventilation—at two levels, with two replications. The data were analyzed using SPSS and MSTAT-C software, employing analysis of variance (ANOVA) and the Kruskal-Wallis test at significance levels of 1%, 5%, and 10%.
Results: The results revealed that the most substantial reduction in particulate matter was achieved in Treatment 3 (low humidity, high ion concentration, and ventilation off), with reductions of 40.88% for PM₂.₅ and 31.91% for PM₁₀, at confidence levels of 90%, 95%, and 99%. The highest reduction in ammonia levels was also observed in Treatment 3, with a mean rank of 50.13. Complete elimination of hydrogen sulfide was observed in Treatment 4 (high ion concentration, low humidity, and ventilation on), with a mean rank of 50.14 at the 10% significance level. Maximum reduction of microorganisms occurred on day 3, with an ionization level of 7 kV, ventilation off, and 30% humidity (Treatment 3).
Conclusion: The study confirms that increasing the concentration of negative ions generated by the ionization system significantly reduces the concentration of airborne pollutants in poultry farms. Therefore, implementing a hybrid bipolar ionization system is recommended to enhance air quality in poultry houses.
Open Access Policy: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/
کلیدواژه‌ها [English]
- Particulate Matter
- Ammonia
- Hydrogen Sulfide
- Microorganisms
- Poultry Farm Pollution
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