کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10223418 1701029 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Toxicity evaluation of textile dyeing effluent and its possible relationship with chemical oxygen demand
ترجمه فارسی عنوان
ارزیابی مسمومیت پساب رطوبت نساجی و رابطه احتمالی آن با نیاز به اکسیژن شیمیایی
کلمات کلیدی
فاضلاب رنگرزی نساجی، سمی بودن شاخص های عادی، تقاضای اکسیژن شیمیایی، مدیریت فاضلاب،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
Textile dyeing wastewater was the focus of much research because of its adverse effect on aquatic biota. In the present research, textile dyeing influent and effluent samples were collected from four textile dyeing wastewater treatment plants (TDPs) in Guangdong province, China, and their conventional indicators and toxicity were examined to reveal relationships. The relationship between toxicity and chemical oxygen demand (COD) was clearly established at individual TDPs. Results indicated the highest removal efficiencies of 94.4%, 90.6%, 91.9%, 94.6%, 92.8% and 97.5% for TOC, mixed-liquor volatile suspended solids (MLVSS), COD, ammonia nitrogen (NH3-N), total phosphorus (TP) and colour, respectively. The primary clarifier used in TDP3 and TDP4 was beneficial for removing macromolecular organic substances, and membrane filtration and sedimentation basin employed at TDP1 and TDP2, respectively, helped to remove toxic substances. Toxicity to V. fischeri or D. subspicatus was found to be related to certain conventional indicators such as TOC, COD, TP, colour, and MLVSS, and was positively correlated with COD in different textile dyeing effluents (R2 > 0.84). It was recommended that the relationship between toxicity and COD in wastewater should be established individually at each plant. Therefore, this study could be useful in providing suggestions for guiding effluent management when no toxicity experiments were conducted.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 166, 30 December 2018, Pages 56-62
نویسندگان
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