کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4996671 1368272 2018 7 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
Integrating microalgae tertiary treatment into activated sludge systems for energy and nutrients recovery from wastewater
ترجمه فارسی عنوان
یکپارچه سازی ترتیب مایکروویو در سیستم های لجن فعال برای بازیافت انرژی و مواد مغذی از فاضلاب
کلمات کلیدی
هضم بی هوازی قبل از اتو هیدرولیز؛ بیو انرژی؛ بیوگاز؛ تمرکز؛ بیوماس میکروالگال؛
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


- The microalgae growth treating secondary effluent and digestate was assessed.
- A novel co-pretreatment was evaluated for enhancing microalgae anaerobic digestion.
- A steady biomass concentration (1 gTSS/L) dominated by Scenedesmus sp was achieved.
- A high organic matter and a complete removal of N-NH4+ and P-PO43−, was observed.
- CH4 yield increased by 130% by microalgae and WAS co-pretreatment and codigestion.

In this study, microalgae digestate and secondary effluent were used to grow microalgae in a tertiary wastewater treatment, and then, the biomass was co-digested for biogas generation. A 30 L closed-photobioreactor was used for microalgae cultivation. The biomass, mainly composed by Scenedesmus sp., reached and maintained a concentration of 1.1 gTSS/L during 30 days. A complete removal of N-NH4+ and P-PO43− and high nitrates and organic matter removals were achieved (58% N-NO3− and 70% COD) with 8 d of HRT. The potential biogas production of the cultivated microalgae was determined in batch tests. To improve their biodegradability, a novel method combining their co-digestion with activated sludge after a simultaneous autohydrolysis co-pretreatment was evaluated. After the co-pretreatment, the methane yield increased by 130%. Thus, integrating microalgae tertiary treatment into activated sludge systems is a promising and feasible solution to recover energy and nutrients from waste, improving wastewater treatment plants sustainability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 247, January 2018, Pages 513-519
نویسندگان
, , , , , ,