A major supplier of copper foil operates several plants in the U.S. The production process includes plating a thin strip of copper onto a steel roller, coiling the foil and shipping it to the end user. The copper foil line utilizes large steel rollers which are regularly hard chrome plated for wear resistance and texture. Roll plating is done in-house, in three large hard chrome plating tanks at ...
Nitrogen (N) transformations and removal in integrated constructed wetlands (ICWs) are often high, but the contributions of various pathways, including nitrification/denitrification, assimilation by plants and sediment storage, remain unclear. This study quantified the contributions of different N removal pathways in a typical multi-celled ICW system treating domestic wastewater. Findings ...
This simulation study investigates the treatment performance of a compact French vertical flow wetland using a zeolite layer in order to increase ammonium nitrogen removal. For the modelling exercise, the biokinetic model CW2D of the HYDRUS Wetland Module is used. The calibrated model is able to predict the effect of different depths of the zeolite layer on ammonium nitrogen removal in order ...
A large residential College in the north of England housing 550 live-in students and 450 non-resident staff operates its own on-site effluent treatment plant to treat all foul waste arising before discharge to local sewer. The effluent plant constructed in 1991 comprises an inlet settlement tank at the head of the works from where the clarified influent feeds by gravity the coke filtration ...
This paper presents the findings from a series of computational fluid dynamics simulations to estimate the effect of scale and Froude number on hydraulic performance and effluent pollutant fraction of scaled waste stabilization ponds designed using Froude similarity. Prior to its application, the model was verified by comparing the computational and experimental results of a model scaled ...
Retention basin efficiency in micropollutant removal has not been very well studied, in particular for pollutants highlighted by the European Water Framework Directive of 2000 such as pesticides, polybrominated diphenyl ethers (PBDEs) and alkylphenols. This study is based on in situ experiments carried out on a stormwater retention basin with the aim of estimating the basin efficiency in ...
Topics: wastewater ,industrial, complete mix, odor control, sludge reduction, energy savings Overview: This wastewater treatment plant (WWTP) consists of two separate treatment avenues for residential and industrial wastewater flows. The industrial waste stream varies seasonally, and comes from food processing wastes from poultry processing, baby food processing, and winery waste. Average ...
Series of experiments for phenol degradation with assistance of TiO2 catalyst at pH of 6.5 and temperature of 25°C were conducted using a lab-scale electrochemical reactor constructed in our laboratory. According to the results, at the presence of the TiO2 catalyst the removal of phenol was increased and first-order kinetics could describe the evolution of phenol concentration. For inspecting ...
M-BIOMAX: 500 pe Process: MBR with ZeeWeed membrane, low speed surface aerator AIRMAX and very fine screening 1mm! Effluent: swimming water quality Flow: 13m³/h (rain water) ...
A brief review of the definition of pH, the pH scale, and some of the chemistry involved in pH Adjustment systems is provided below. For some this may be trivial, yet for many others this may be useful. The information provided below is typical of the background information we provide in our training classes / seminars. By Definition pH is the measure of free hydrogen activity in water and can ...
This paper discusses the issues involved in sizing ultraviolet (UV) disinfection systems for low quality water, such as those found in poor quality wastewater (primary effluents) or wet weather flows (combined sewer overflows). Discussions of UV reactor dynamics and the merits of bioassay validation are ...
Abstract : The primary objective of this project was to evaluate six Toxkits and the IQ Toxicity TestsTM, for suitability in the role of screening of whole effluents in DTA required by Resource Consents. As an extension, their role as \'up the pipe\' toxicity identification tests were also evaluated. Screening tests must be cost effective (so that regular testing may be performed), easy to use ...
Belonging to the famous Sheraton hotel chain, the Club des Pins hotel in Alger, Algeria, has 420 rooms and the best conference center in Algeria. For the wastewater treatment of the hotel and its important business center, the Club des Pins installed in 1998 a BIOTOUR system developed by H2O Innovation. The main function of the BIOTOUR is to trickle the polluted water onto a bacterial bed which ...
About 30% of all sewage generated in North America passes through septic tanks, but there is a lack of study to improve these important treatment vessels, and there is no performance-based standard. A survey of existing literature shows that septic tank effluent quality is improved in tanks designed for quiet, laminar fluid-flow and minimum ‘dead space’ such as in longer, narrower tanks. A ...
As Texas continues to grapple with an impending deficit of water supplies to meet its future water demands, many water purveyors are looking to their existing resources to meet such needs. Although many water purveyors have already begun planning direct reuse projects, also known as “flange-to-flange” reuse, others have begun to realize the value of wastewater treatment plant discharges. ...
Project Name: Nordfjord Kjott R.A. Location: Stryn, Norway Type of Plant: Industrial Meat Processing/Slaughterhouse Technology Used: Biowater CMFF Biofilm system Biomedia Used: Biowater BWT-X Operational Since: Summer 2011 The Challenge Located deep in the mountains of Stryn. the original plant consisted of an inlet pump station & Salsnes filter for pretreatment, fat removal and a Salsnes ...
A well-known cereal manufacturer has a production plant that produces coated cereals. The production process results in a high level of COD being discharged to the waste stream. For both environmental and economic reasons they needed to reduce the strength of this effluent. Cleveland Biotech Ltd were asked to advise on possible solutions to this effluent problem. A meeting took place in February ...
Severn Trent Water Ltd. has chosen to adopt rotating biological contactors (RBCs) and reed beds amongst other technologies for treating sewage where the population is less than 2000. The design of an RBC to achieve a fully compliant effluent can be difficult when flows are small or the system is combined and an overflow is not permissible. In addition, RBCs have been plagued by mechanical ...
Background Levine Fricke Engineers (LFE), an environmental firm under contract to Blackstone Consultants LLC (Blackstone), was responsible for specifying and selecting a cleanup remedy for a former contaminated nursery site located in Delray Beach, Florida. LFE and Blackstone performed site characterization and demonstrated that site groundwater contained very high arsenic concentrations. ...
A cocopeat biofilter system is a low-cost and low-maintenance on-site wastewater treatment solution that is modular in design and applicable for residential, institutional and commercial establishments. The system can be designed to passively treat septic tank effluent to meet secondary treatment levels. For residential use, the biofilter unit consists of a relatively small ...