مروری بر دوام لوله‌های فاضلاب پلی‌وینیل‌کلرید: عوامل ساختاری و عملکردی

نوع مقاله : تالیفی

نویسنده

عضو هیات علمی پژوهشگاه استاندارد

چکیده

در شرایط حاضر، پلی­ وینیل کلرید(PVC)  یکی از ارزشمندترین محصولات صنعت پتروشیمی است. به­ طور کلی، بیش از نیمی از PVC تولیدی در ساختمان­ سازی استفاده می‌شود. ‌در دهه­ های گذشته، به­ دلیل مزایای بسیار، به ­عنوان یکی از محصولات غالب به­ کاررفته در سامانه ­های فاضلاب تبدیل شده است. با این حال، از آنجا که این لوله­ های فاضلاب برای دهه ­ها در یک محیط مهاجم فاضلاب کار می­ کنند، اخیراً نگرانی درباره طول عمر آن­ها افزایش یافته است. در این راستا، عوامل اصلی و سازوکارهای اثرگذار بر طول عمر لولهPVC ، همراه با روش ­های فعلی تخمین طول عمر و محدودیت­ های آن­ها در این مقاله بحث شده است. بررسی مطالعات موردی مربوط نشان می­ دهد، تخریب مواد، در صورت وجود، به ­آرامی رخ می­ دهد. با این حال، بازرسی­ های انجام ­شده از برخی خطوط فاضلاب در کشورهای مختلف نشان می ­دهد، نقص ­های شدید ظاهرشده در لوله­ ها با شتاب زیاد و غیرمنتظره ­ای رشد می­ کند. دلیل اصلی این تفاوت بین مطالعات و عمل، این واقعیت است که آزمون جامع مواد لوله ­های فاضلاب PVC به ­ندرت در منابع یافت می ­شود، اگرچه برای ارزیابی قابل اعتماد وسعت تخریب و منابع آن ضروری است.

کلیدواژه‌ها

عنوان مقاله [English]

A Review of the Durability in PVC Sewer Pipes-Structural and Performance Factors

نویسنده [English]

  • mahroo khaleghi
Chemistry and Petrochemical Engineering, Standard Research Institute (SRI),
چکیده [English]

Currently, polyvinyl chloride (PVC) is one of the most valuable products in the petrochemical industry. In general, more than half of the PVC products is used in construction. In recent decades, due to its many advantages, it has become one of the dominant products used in sewage systems. However, as these sewer pipes have been operated in an aggressive environment for decades, concerns about their longevity have recently increased. In this regard, in this article, the main factors and mechanisms affecting the service life of PVC pipe, along with current methods for estimating their service life and their limitations are discussed. Investigation of related case studies shows that material degradation, if present, occurs slowly. However, inspections of some sewer lines in different countries show that severe defects in the pipes are growing at a rapid and unexpected rate. The main reason for this difference between studies and practice is the fact that a comprehensive test of PVC sewer pipe materials is rarely found in sources, although it is necessary to reliably assess the extent of degradation and its sources.

کلیدواژه‌ها [English]

  • plastic pipes
  • polyvinyl chloride
  • sewer
  • degradation
  • pipes lifetime

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