نتایج جستجو برای: dbps

تعداد نتایج: 390  

Journal: :Environmental science 2021

A sensitive analytical method was developed that simultaneously characterizes 25 unregulated DBPs in wastewater effluents. DBP formation potential with HOCl and NH2Cl evaluated across a full-scale reuse facility for the first time.

ژورنال: :تحقیقات نظام سلامت 0
محمد مهدی امین دانشیار، مرکز تحقیقات محیط زیست، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران حسن هاشمی مربی، گروه مهندسی بهداشت محیط دانشکده بهداشت دانشگاه علوم پزشکی شهرکرد، شهرکرد، ایران مهدی صفری مربی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی کردستان، سنندج، ایران زینب رضایی کارشناس، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

مقدمه: پلی آلومینیوم کلراید (pacl) یک منعقد کننده معدنی می باشد که در سال های اخیر کاربرد زیادی جهت حذف رنگ و کدورت در صنعت تصفیه آب پیدا کرده است. در اثر اضافه نمودن مواد منعقد کننده به آب، مقادیری از این مواد در آب حل شده و در آب تصفیه شده نهایی باقی می مانند. آلومینیوم یکی از موادی است که در منعقد کننده هایی با پایه آلومینیوم (مثل آلوم و pacl) وجود دارد و مقادیر ناچیزی از آن در آب، باعث بروز...

2010
Guglielmina Fantuzzi Elena Righi Guerrino Predieri Pierluigi Giacobazzi Katia Mastroianni Gabriella Aggazzotti

The objective of this cross-sectional study was to investigate the prevalence of self-reported respiratory, ocular and cutaneous symptoms in subjects working at indoor swimming pools and to assess the relationship between frequency of declared symptoms and occupational exposure to disinfection by-products (DBPs). Twenty indoor swimming pools in the Emilia Romagna region of Italy were included i...

2010
Rita Schoeny

By all accounts, disinfection of drinking water is one of the major public health triumphs of the 20th century. No human endeavor, however, is without risk; more than 30 years ago it was determined that chlori­ nation of water resulted in formation of disinfection by­products (DBPs). Several of these, such as the trihalomethanes (THMs) and haloacetic acids (HAAs), were subsequently observed to ...

Journal: :Science of The Total Environment 2021

Population growth and urbanization have led to the increasing presence of treated wastewater effluents in downstream drinking water sources. Drinking sources influenced by organic matter from upstream treatment plant (WWTP) are thought prone formation haloacetonitriles (HANs), a group nitrogenous disinfection by-products (DBPs) that can exhibit higher toxicity than currently regulated carbonace...

ژورنال: سلامت و محیط زیست 2008
ززولی, محمدعلی, مصداقی نیا, علیرضا, ناصری, سیمین,

Background and Objectives: Natural organic matters (NOMs) are abundant in natural water resources and in many ways may affect the unit processes in water treatment. Although NOMs are considered harmless but they have been recognized as disinfection by-products (DBPs) precursors during the chlorination process. Formation of DBPs highly depends on the composition and concentration of NOMs. The ob...

2010
Angela Spivey

Disinfection by-products (DBPs) form in swimming pool water from reactions between disinfectants such as chlorine and organic matter such as sweat, skin cells, and urine. A new study described in a set of three articles provides the first comprehensive characterization of DBPs in an indoor pool environment and offers initial evidence of cellular-level effects of these chemicals in swimmers in a...

Journal: :Water 2023

Ensuring drinking water quality is a key factor for public health and it especially important given the increase in industrialization. Its ensured by treatment process that includes disinfection stage, mainly involving chlorination. However, applying this method, unwanted byproducts (DBPs) are formed. These compounds have, general, negative impact on human health. Following this, development of...

Journal: :Environmental science & technology 2009
Jerome M Kemper Paul Westerhoff Aaron Dotson William A Mitch

Strong base anion-exchange resins represent an important option for water utilities and homeowners to address growing concerns with nitrate, arsenate, and perchlorate contamination of source waters. Most commercially available anion-exchange resins employ quaternary amine functional groups. Previous research has provided contradictory evidence regarding whether these resins serve as sources of ...

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