Evaluating the Impact of Algal Biomass Augmentation on Primary Solids Fermentation and Associated Impacts of Fermenter Liquor on a Novel Post-anoxic Enhanced Biological Phosphorus Removal Process
Evaluating the Impact of Algal Biomass Augmentation on Primary Solids Fermentation and Associated Impacts of Fermenter Liquor on a Novel Post-anoxic Enhanced Biological Phosphorus Removal Process

Author: Taylor Mackey Romenesko

Publisher:

Published: 2017

Total Pages: 152

ISBN-13: 9780355067361

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Nitrogen (N) and phosphorus (P) must be removed from wastewater to sustain the water quality of receiving bodies. In this regard, algae can be utilized to achieve tertiary wastewater treatment, removing residual N and P; moreover, algae production creates opportunities to enhance overall water resource recovery facility productivity. Research evaluated an integrated fermenter-biological nutrient removal (BNR) process, integrating algae cultured on secondary effluent. It was hypothesized that algae recycled to the fermenter would increase volatile fatty acid (VFA) production. VFAs are critical for BNR stability; however, concurrent addition of N and P (from the algal biomass) could stress the BNR system. Surprisingly, addition of algae decreased VFA production and consumed ammonia, seemingly due to heterotrophic algae growth in the fermenter. Conversely, the BNR system realized no effect from the algal biomass recycling; P removal was consistent with and without algae, while less efficient nitrification but more efficient denitrification was realized.

Phosphorus in Fresh Water and the Marine Environment
Phosphorus in Fresh Water and the Marine Environment

Author: S. H. Jenkins

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 367

ISBN-13: 1483147266

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Phosphorus in Fresh Water and the Marine Environment investigates sources of phosphorus in fresh water and the marine environment and the problems it causes. The importance of phosphate precipitation as an inbuilt safety device against overproduction of algae in the oceans is discussed, along with the deposition and absorption of phosphates in sediments. The source of the phosphorus in lakes and rivers is considered in relation to population density and distribution. This book is comprised of 26 chapters and begins with a discussion on natural phosphate sources in relation to phosphate budgets, paying particular attention to eutrophication and soil erosion. The significance of man-made sources of phosphorus, such as fertilizers and farming, detergents and sewage, is then examined. Subsequent chapters focus on the role of phosphorus in the growth of plants and animals in rivers, lakes, and the sea; the hydrogeochemical cycling of phosphorus; phosphorus analysis in sea water; and safety evaluation of substitutes for phosphates in detergents. The microbiology of an activated sludge wastewater treatment plant chemically treated for phosphorus removal is also explored. This monograph will be of interest to policymakers concerned with water pollution control.

Improved Phosphorus Removal in Wastewater Through Combined Bacterial and Algal Treatment
Improved Phosphorus Removal in Wastewater Through Combined Bacterial and Algal Treatment

Author: Kevin D. Stark

Publisher:

Published: 2012

Total Pages: 75

ISBN-13:

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Increasingly strict nutrient regulations propel the need to develop more sustainable methods to remove nitrogen (N) and phosphorus (P) from wastewater. Algae show promise in their ability to uptake P. The purpose of this research was to propose an ANOA system (ANoxic, Oxic, Algae), testing a bench scale modified Ludzack-Ettinger (MLE) system coupled with an algaebased continuous stir tank reactor (algae CSTR). The system was tested for its P treatment efficacy, focusing on the performance of the algae CSTR. The algae system could uptake up to 55% of P at the influent concentration of 6 mg/L. However, the presence of large flocs of bacteria in the algae CSTR resulted in a decrease and eventually a ceasing of P uptake. Phosphorus adsorption and uptake resulted in the algal biomass containing P at about 6% of the total biomass dry weight. Based on cellular P distribution with about 90% extracellular (physic-chemical sorbed) and 10% intracellular P (biological uptake) by using an oxalic acid rinse reagent, P removal in algae CSTR was mainly attributed to physical/chemical processes including P adsorption and coprecipitation with cations at relatively high pH environment due to algal growth.

Phosphorus: Polluter and Resource of the Future
Phosphorus: Polluter and Resource of the Future

Author: Christian Schaum

Publisher: IWA Publishing

Published: 2018-03-15

Total Pages: 592

ISBN-13: 1780408358

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This comprehensive book provides an up-to-date and international approach that addresses the Motivations, Technologies and Assessment of the Elimination and Recovery of Phosphorus from Wastewater. This book is part of the Integrated Environmental Technology Series.