wastewater analysis Articles
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Research experiences in microwave-assisted chemical oxygen demand determination
The conventional COD determination through reflux method, although still much in experimental practice for water and wastewater analysis, is time consuming, complex and prone to a number of errors. A simpler, more rapid, environmentally benign but still precise method would hence be more attractive and is, in point of fact, a pressing need. Contextualised within the concept of Green Chemistry, ...
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Improved Efficiencies in TOC Wastewater Analysis for Standard Method 5310B and USEPA Method 415.1
Abstract Total Organic Carbon (TOC) measurement is of vital importance to the operation of water treatment due to organic compounds comprising a large group of water pollutants. TOC has been around for many years, and although it is a relatively simple analysis in theory, operational efficiency is paramount. Laboratories are continually looking to increase sample throughput, decrease overall cost ...
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Flaxseed Oil Waste
A commercial manufacturer of flaxseed oil was having a problem obtaining the FOG and TSS level required by their local POTW. A sample was submitted to our laboratories for treatment analysis. The wastewater was at a pH of 7.0 so no adjustment was required. The sample was treated with Floccin J and the results met their ...
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Analysis of wastewater management in the Florida Keys
Maintaining water quality in the Florida Keys is vital to the area’s economy. However, the lack of sewage infrastructure has degraded nearshore water quality. The Monroe County Year 2010 Comprehensive Plan outlines strategies to improve sewage infrastructure to meet the State of Florida’s 2010 effluent standards. This paper assesses the progress of the Monroe County Year 2010 Comprehensive Plan ...
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Matrix interference reduction for the analysis of carbohydrate in wastewater using H-point standard addition method
Soluble microbial products, consisting of protein, carbohydrate and humics, are generally considered as the main membrane foulants during the performance of membrane bioreactors. Nitrate and nitrite have been proved to affect the determination of carbohydrate when anthrone-sulfuric acid photometric method is used. In this study, three chemical analytical methods based on photometric assay, ...
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Physical methods in wastewater treatment
Physical methods of wastewater treatment are useful in water purification and recycling. We have proposed the role of nanoparticle in combination with ultrasound. Ultrasound (US), nanoparticle (NP) or in combination (US + NP) may offer an attractive proposition in the area of water purification. Ultrasound irradiation applications is that acoustic cavitation can affect a number of mechanical, ...
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Financial and economic feasibility of decentralized wastewater reuse systems in Beijing
Many decentralized wastewater reuse systems have been constructed in Beijing. However their performance is not as good as expected. The total amount of reclaimed water used in Beijing is much less than the designed capacity. In order to understand the reasons causing such poor performance, an integrated financial and economic feasibility analysis for the decentralized wastewater reuse systems in ...
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European wastewater analysis shows drug-use patterns
Residents of London and Antwerp are using more cocaine than residents of any other major European cities based on a new examination of wastewater. Londoners are using cocaine the most during the work week — which the study defines as Tuesday, Wednesday, and Thursday — at 790.5 mg per 1,000 people per day, while Antwerp leads on weekend use — Friday, Saturday, Sunday and Monday ...
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Effect of flocculant on microbial populations and function in Chem-Bioflocculation (CBF) treatment process using PCR-DGGE
The group-specific primers were applied to investigate microbial communities in Chem-Bioflocculation (CBF) reactor by PCR-DGGE method. α-proteobacteria, β-proteobacteria, actinomycetes and acidobacterium, were analysed by using diversity index at different dosage of Polyaluminium Ferric Chloride (PAFC) based on DGGE patterns. Clustering analysis showed that community structure of specific ...
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Characteristic of wastewater and their analysis
Wastewater containing chromium and other heavy metals, is highly toxic effluents which require high-quality and efficient purification. Such effluents formed during electroplating, other types of chemical, electrochemical surface treatment of metal products such as chromium-plating, nickel-plating, copper-plating, zinc-plating, cadmium-plating and also during some technological processes. These ...
By GlobeCore PC
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Drivers for and against municipal wastewater recycling: a review
The reclamation, treatment and reuse of municipal wastewater can provide important environmental benefits. In this paper, 25 studies on this topic were reviewed and it was found that there are many (>150) different drivers acting for and against wastewater recycling. To deal with the challenge of comparing studies which entailed different research designs, a framework was developed which ...
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Waste water treatment, intensification of process
Among the various methods such as homogenizing, mixing, neutralization, sedimentation, filtering, ion exchange etc. ABC-100 PC GlobeCore production is machines with vortex layer and it is widely used for: · wastewater treatment from hexavalent chromium and other heavy metals (under the influence of electromagnetic field we can extremely reduce reagent consumption at the ...
By GlobeCore PC
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Application of exergy analysis for quantification and optimisation of the environmental performance in wastewater treatment plants
This paper presented a new approach to estimate the degradation of environmental resources in a Wastewater Treatment Plant (WWTP) using exergy analysis. In first part, a method was described to calculate various quantities of the wastewater exergy. Furthermore, units were analysed to determine the most defective unit. In second part, a case study was analysed based on the environmental exergy ...
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Demographics as a new challenge for sustainable development in the German wastewater sector
The coincidence and dynamics of population decline and aging and a new regional distribution of the population pose a new challenge for a sustainable development for which there is no historical precedent. The regional distribution of population reduction will vary considerably. Shaping the future politically means facing up to the challenges of the demographic change and thus trying to answer ...
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Transparent Energy Balance by Online Energy Analysis at Wastewater Treatment Plants
Energy efficiency studies are the basis for modernisation projects at wastewater treatment plants. A major shortcoming is that these studies do not provide any information on how the energy balance actually changes after optimisations have been carried out. At the Asselbrunn sewage treatment plant of the Mittlere Mümling Wastewater Association, an analysis tool was used that enables the ...
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Institutional and policy analysis of wastewater (re)use for agriculture: case study Hyderabad, India
Wastewater constitutes an alternative water source for the irrigation sector. To fully benefit from it, and reduce possible adverse effects on public health and the environment, we need to look at the regulation of the practice. A prerequisite for this is an institutional analysis, and the points to consider are the institutional mandates. We used the city of Hyderabad, India, as a case study. ...
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Identification of α-β unsaturated aldehydes as sources of toxicity to activated sludge biomass in polyester manufacturing wastewater
Wastewater generated in industrial production processes are often contaminated by hazardous chemicals. Characterization by means of toxicity-directed analysis is useful for identifying which fractions of a waste stream possess the most toxicity. We applied this approach to evaluate toxic components of a polyester manufacturing wastewater. Using the reduction in oxygen uptake rate of activated ...
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Spectrophotometric Determination of Standard Parameters in Wastewater
More efficient spectrophotometric analysis of pollutant parameters in wastewater For many years, UV/Vis spectroscopy has been an established standard method with standardized procedural guidelines for the qualitative and quantitative analysis of a variety of parameters of wastewater such as nitrate (NO3), nitrite (NO2), ammonium (NH4), phosphate ions (PO4), and total phosphorus (Ptot) ...
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Growth and accumulation of heavy metals in turnip (
Brassica rapa ) irrigated with different concentrations of treated municipal wastewaterThe present study has been carried out by irrigating turnip plants with different concentrations of treated municipal wastewater in order to see the effect on heavy metals accumulation and growth of plants. The turnip plants were watered with normal water and the results compared with results obtained by using treated municipal wastewater. The treatments used were: control (tap water) with 0, ...
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Environmental impact analysis of chemicals and energy consumption in wastewater treatment plants: case study of Oslo, Norway
Wastewater treatment plants, while performing the important function of treating wastewater to meet the prescribed discharge standards, consume energy and a variety of chemicals. This paper analyses the consumption of energy and chemicals by wastewater treatment plants in Oslo over eight years, and their potential environmental impacts. Global warming and acidification were the dominant impacts ...
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