بررسی تغییرات دبی در قطره‌چکان‌های مختلف در اثر اعمال فاضلاب تصفیه شده

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی آب دانشگاه علوم کشاورزی‌و منابع طبیعی گرگان

2 گروه مهندسی آب دانشگاه تبریز

چکیده

پژوهش ها بیانگر این است که استفاده از روش آبیاری قطره ای اغلب نسبت به روش های دیگر آبیاری، سازگاری مناسبی را با کاربرد فاضلاب تصفیه‌شده دارد. در همین راستا، به منظور مطالعه تغییرات دبی قطره چکان ها در اثر استفاده از فاضلاب تصفیه‌شده در سیستم های آبیاری قطره ای، دو سیستم آبیاری قطره ای (یک سیستم با آب چاه به‌عنوان تیمار شاهد و دیگری با فاضلاب تصفیه‌شده از تصفیه خانه شهرستان میاندوآب به‌عنوان تیمار اصلی) نصب و اجرا گردید. بنا به تفاوت و حساسیت قطره چکان‌های مختلف در برابر گرفتگی فیزیکی متاثر از املاح موجود در آب، از چهار قطره چکان شامل، قطره چکان یورو دریپ ۴ لیتری با فواصل خروجی یک متری، دو قطره چکان ایران دریپ ۴ لیتری با فواصل خروجی یک متری و لوله تیپ 16 میلی متری با فواصل خروجی ۲۰ و 30 سانتی متری استفاده گردید. سیستم ها در حالت فشار کارکرد 4 متر تحت آزمایش قرار گرفتند و مشخص گردید قطره چکان یورو دریپ با دارا بودن کم ترین درصد کاهش دبی بهترین عملکرد را داراست و با مدیریت فنی و صحیح، سیستم قابلیت اجرا با فاضلاب تصفیه‌شده را دارد. بالاترین درصد یکنواختی پخش مطلق قطره چکان ها در زمان کار با فشار 4 متر مربوط به قطره چکان یورو دریپ با 6/95 %و کمترین مقدار مربوط به قطره چکان ایران دریپ با 15/88 %درصد می‌باشد. هم چنین قطره چکان ایران دریپ بیشترین درصد کاهش دبی و به میزان 4/29 %را به خود اختصاص داد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigating Discharge Variation in Various Emitters Due to the Effect of Refined Wastewater

نویسندگان [English]

  • Yahya Choopan 1
  • Somayeh Emami 2
1 Water Engineering Department of Gorgan university
2 Water Engineering Department of Tabriz
چکیده [English]

Research indicates that the use of Emitters in more suitable for use with wastewater than other irrigation methods. In order to study the Emitter’s discharge variation by using refined wastewater in drip irrigation systems, two drip irrigation systems (a water well system as control treatment and the other with a Miandoab refinery refined wastewater as main treatment) was installed and implemented. Due to the difference and sensitivity of various emitters against physical clogs affected by water-soluble, four emitters consists of 4-liter Euro-droplet emitter with 1-meter outlet distances, two 4-liter Iran drip emitter with 1-meter outlet distances and the 16mm type tube was used at 20 to 30 cm output distances. The systems were tested in a 4-meter pressure mode and it was determined that the Euro-drip emitter has the best performance and with technical and appropriate management, the system has the ability to run with the refined wastewater. The results showed that the Euro-drip emitter indicates the lowest percentage of discharge decreases. The highest emitter absolute dispersion uniformity percentage during operation with a 4-meter pressure is related to the Euro-drip with 95.6% and the lowest value for the Iran-drip with 88.15%. Also, Iran-drip emitter the most discharge decrease by 29.4%.

کلیدواژه‌ها [English]

  • Discharge Decrease
  • Drop Irrigation
  • Emitter
  • Uniformity Percentage
  • Wastewater

مراجع

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نشریه مهندسی عمران امیرکبیر
دوره 52، شماره 4
تیر 1399
صفحه 783-796

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