activated carbon treatment Articles
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Nationwide survey of organism-related off-flavor problems in Japanese drinking water treatment plants (2010–2012)
Recent trends in off-flavor problems were investigated by a nationwide questionnaire survey targeting 239 drinking water treatment plants (DWTPs) maintained by 79 regional water suppliers (RWS) in Japan. The results indicated that 43 of 79 (54%) RWS and 89 of 239 (36%) DWTPs were affected by off-flavor problems in a recent 2-year period (October 2010–September 2012). Off-flavor incidents ...
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Organic pollution removal from coke plant wastewater using coking coal
Coke plant wastewater (CPW) is an intractable chemical wastewater, and it contains many toxic pollutants. This article presents the results of research on a semi-industrial adsorption method of coking wastewater treatment. As a sorbent, the coking coal (CC) was a dozen times less expensive than active carbon. The treatment was conducted within two scenarios, as follows: (1) adsorption after ...
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Characterisation of activated carbon prepared from tamarind wood for wastewater treatment
In this paper, an attempt has been made to produce activated carbon from tamarind wood, which is a forest waste, rich in lignocellulosic material. The characterisation of the activated carbon is done based on carbonisation time, temperature, pore volume and Brunauer, Emmett and Teller (BET) surface area under various operating conditions. The Scanning Electron Microscopy (SEM) analysis is also ...
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Removing Chloramines from Drinking Water Supplies
Historically, most public water supplies have been treated with chlorine to satisfy the standards set by the Safe Drinking Water Act of 1974. Since being established, there is reason to believe that the standards may be too lenient on the allowable contaminant levels in our drinking water. For instance, chlorine and other disinfectants react with organic matter creating carcinogenic by-products1. ...
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Adsorption characteristics of Bisphenol-A on tailored activated carbon in aqueous solutions
The adsorption behavior of pharmaceuticals and personal care product, Bisphenol-A (BPA), according to four coal-based and four wood-based granular activated carbons modified using outgassing treatment, acidic treatment or alkaline treatment was studied. The adsorption isotherm results indicated that carbon surface acidity played a very important role in the adsorption of BPA. It was found ...
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Profiles of dissolved organic matter and haloacetic acid formation potential in drinking water treatment by a comprehensive fractionation technique
A comprehensive fractionation technique was applied to a set of water samples obtained along a real drinking water treatment plant with ozonation and granular activated carbon (GAC) treatment to obtain detailed profiles of dissolved organic matter (DOM) and to evaluate the haloacetic acid (HAA) formation potentials of these DOM fractions. The results indicated that ozonation and GAC treatment ...
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Neptune project deliverable D3.2
Data set of ecotoxicity testing in relevant treatment processes and additionally of two emerging contaminants Micropollutants – trace organic contaminants occurring at ng/L concentrations or even below – attract more and more attention because of their potential impact on aquatic ecosystems. Thousands of different chemicals are introduced in the aquatic environment on trace levels ...
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Project - Drinking Water - Xuzhou Drinking Water Company(China)
Project Introduction The designed water supply capacity is 400,000 m3 / day, and the actual water supply is 410,000 m3. The process applies pre ozone, flocculation and sedimentation, sand filter, post Ozone Capacity and activated carbon filter. After advanced treatment, degrade COD in the water, deodorize, decolorize, sterilize and disinfect. Treatment Capacity: 400,000 t/d Influent Quality ...
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Active carbon exhaust - air treatment in heat exchanger - Case Study
Client: Cement plant (Germany) Product: Active carbon Conveyed volumes: unknown Pipe diameter: DN 100 Installation location: Air conveying system. Filter in heat exchanger. Number of devices: 1 According to the client, the FlowJam S system offers the following advantages: Detection of material flow Detection of material blockage and material stillstand Easy installation and ...
By ENVEA
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Organic matter removal and disinfection byproduct management in South East Queensland's drinking water
Over the past several decades, much research has been carried out to understand and control the formation of disinfection byproducts (DBPs) of potential human health concern in drinking water. The majority of these studies have taken place in continental climates of North America and Europe, with less work investigating waters in tropical and subtropical climates. This study evaluated the ...
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Laboratory waste gas treatment solutions
The target pollutants emitted by the laboratory are ranked in the order of potential emission intensity and control necessity: small molecular gas pollutants, specific organic pollutants (formaldehyde, xylene, methanol), biological pollutants (pathogenic microorganisms and their aerosols) ), odor, other TVOCs (ether, benzene and other macromolecular organic substances), particulate matter. There ...
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Fundamentals of Catalytic Activated Carbons
Untitled Document Summary: Catalysts in water treatment speed chemical reactions so equipment can be scaled down or contact times shortened. Because the speed of a reaction can affect equipment price or useful life, it could mean the difference between a sale and a "no, thanks." Thus, recently developed catalytic activated carbons may enable water treatment ...
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Treatment of paint wastewater by radiation combined with coagulation and adsorption
In this study, attempts were made to examine the efficiency of radiation combined with coagulation with aluminium sulphate and adsorption using granular activated carbon (GAC) for treatment of paint wastewater and its reuse for different purpose. Parameters affecting microorganism disinfection such as radiation dose showed that complete disinfection was obtained at radiation dose 2 kGy. Factors ...
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Superheated water pretreatment combined with CO2 activation/regeneration of the exhausted activated carbon used in the treatment of industrial wastewater
This paper examines a novel method of regenerating saturated activated carbon after adsorption of complex phenolic, polycyclic aromatic hydrocarbons with low energy consumption by using superheated water pretreatment combined with CO2 activation. The effects of the temperature of the superheated water, liquid–solid ratio, soaking time, activation temperature, activation time, and CO2 flow ...
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Genotoxicity testing of samples generated during UV/H2O2 treatment of surface water for the production of drinking water using the Ames test
in vitro and the Comet assay and the SCE testin vivo UV/H2O2 treatment can be part of the process converting surface water to drinking water, but would pose a potential problem when resulting in genotoxicity. This study investigates the genotoxicity of samples collected from the water treatment plant Andijk, applying UV/H2O2 treatment with an electrical energy dose of 0.54 kWh/m3 and a H2O2 dose of 6 mg/l. Genotoxicity was tested in vitro using ...
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Primary treatment of anaerobic landfill leachate using activated carbon and limestone: batch and column studies
Leachate generated from an old landfill in Taiping, Perak, Malaysia contains high colour, COD, iron and ammoniacal nitrogen. Activated carbon?limestone mixture was used as a primary treatment process. More than 86% of colour and COD, 95% of iron, and 48% of ammoniacal nitrogen were removed by a mixture of activated carbon and limestone (15:25 by volume) in the batch study compared with 70, 80 and ...
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A pilot plant study of the processes of filtration and adsorption of drinking water through granular activated carbons: a comparative study
This study reports a procedure for the evaluation and comparison of the adsorption and filtration capacities of commercial activated carbons in the treatment of drinking water and the design and operation of a pilot plant to simulate the behavior of fast open filters made of granular activated carbon. The milestone of this experimental work was to determine the adsorption and filtration ...
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Performance of Biological Powder Activated Carbon-Membrane Bioreactor (BPAC-MBR) for old-landfill leachate treatment
This research aims to investigate the performance of the combined BPAC-MBR system for old-landfill leachate treatment. The system was operated at two different intermittent aeration modes (aeration or non-aeration) of 120-120 min and 150-150 min. It was found that the BPAC-MBR system operating at 150-150 min could give higher removal efficiencies for all parameters; COD at 83%, colour at 85%, TKN ...
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Evaluation of acute ecotoxicity removal from industrial wastewater using a battery of rapid bioassays
The present study compares conventional wastewater treatment technologies (coagulation–flocculation and activated sludge) and powdered activated carbon (PAC) treatment for the removal of acute ecotoxicity from wastewater generated by tank truck cleaning (TTC) processes. Ecotoxicity was assessed with a battery of four commercially available rapid biological toxicity testing systems, ...
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Commonly used waste gas treatment: activated carbon adsorption method
Activated carbon adsorption method Principle of Contamination Activated carbon adsorption method is a widely used method of VOCs treatment due to low initial investment. It adsorbs VOCs through the natural adsorption capacity of activated carbon. When the adsorption is saturated, the activated carbon is desorbed and regenerated or handed over to professional hazardous waste companies for ...
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