drainage technology Articles

  • Membrane technology applied to acid mine drainage from copper mining

    The objective of this study is to evaluate the treatment of high-strength acid mine drainage (AMD) from copper mining by nanofiltration (NF) and reverse osmosis (RO) at pilot scale. The performances of two commercial spiral-wound membranes – NF99 and RO98pHt, both from Alfa Laval – were compared. The effects of pressure and feed flow on ion rejection and permeate flux were evaluated. The ...


    By IWA Publishing

  • Drainage-Area Survey Data Management

    Northumbrian Water Supply of HydroLog4 time-series database and reporting system for drainage area studies Northumbrian Water ordered HydroLog4 as a replacement data management and reporting system for time-series data collected during the short and long-term survey work by internal crews throughout the water company's wastewater management business. ...

  • Pilot test of pollution control and metal resource recovery for acid mine drainage

    The study was undertaken in order to recover the metal resources from acid mine drainage (AMD). A 300 m3/d continuous system was designed and fractional precipitation technology employed for the main metals Fe, Cu, Zn, and Mn recovery. The system was operated for six months using actual AMD in situ. The chemicals' input and also the retention time was optimized. Furthermore, the ...


    By IWA Publishing

  • Automatic, semi-automatic and manual validation of urban drainage data

    Advances in sensor technology and the possibility of automated long distance data transmission have made continuous measurements the preferable way of monitoring urban drainage processes. Usually, the collected data have to be processed by an expert in order to detect and mark the wrong data, remove them and replace them with interpolated data. In general, the first step in detecting the wrong, ...


    By IWA Publishing

  • A review of the adaptation and mitigation of global climate change using sustainable drainage in cities

    Sustainable drainage (SUDS) is well known for its equal emphasis on water quality, water quantity, amenity and biodiversity. What is now beginning to be realised is that this approach can also help mitigate the impacts of global climate change (GCC) and provide assistance to city dwellers in adapting to the changes which have already occurred. By using case studies from around the world, this ...


    By IWA Publishing

  • Two-stage combined treatment of acid mine drainage and municipal wastewater

    This study examined the feasibility of the combined treatment of field-collected acid mine drainages (AMD, pH = 4.2 ± 0.9, iron = 112 ± 118 mg/L, sulfate = 1,846 ± 594 mg/L) and municipal wastewater (MWW, avg. chemical oxygen demand (COD) = 234–333 mg/L) using a two-stage process. The process consisted of batch mixing of the two wastes to ...


    By IWA Publishing

  • Combination of bespoke and standard ACO surface water drainage systems

    A series of unique, high performance channel drainage systems designed and manufactured by ACO Technic, the bespoke product development division of water management specialist ACO Technologies, has been installed across Heathrow's award winning Terminal Five. As well as helping to overcome some significant challenges posed by the site's design, the systems have played a key role in creating some ...


    By ACO Group

  • Inorganic contaminants attenuation in acid mine drainage by fly ash and its derivatives: column experiments

    Treatment of AMD with fly ash (FA) is a promising technology but solid residues (SR) generated in the process pose a disposal challenge. This study evaluates the suitability of the SR and SR, FA/ordinary Portland cement (OPC) blends for backfill in mine voids and in–situ treatment of AMD flows. The mitigation of AMD in a mine void was simulated by addition of simulated acid mine drainage ...


    By Inderscience Publishers

  • Urban drainage system planning and design – challenges with climate change and urbanization: a review

    Urban drainage systems are in general failing in their functions mainly due to non-stationary climate and rapid urbanization. As these systems are becoming less efficient, issues such as sewer overflows and increase in urban flooding leading to surge in pollutant loads to receiving water bodies are becoming pervasive rapidly. A comprehensive investigation is required to understand these factors ...


    By IWA Publishing

  • Production performance prediction during steam assisted gravity drainage process in anisotropic reservoirs

    Although steam assisted gravity drainage (SAGD) technology is an effective thermal recovery process for heavy oil reservoirs, it consumes a mountain of natural gas and produces tons of greenhouse gas. Therefore, it is of great importance to predict the production performance during production period. In this paper, we extend Reis's research (Reis, 1992) to calculate SAGD production performance in ...


    By Inderscience Publishers

  • plastic pipe fitting mold technology

    “ Forever care you, care your molds”, is our insist mentality philosophy. We insist on mold construction design and steel quality, believe these two factors are main points to achieve mold with excellent performance. produces moulds for PVC ...


    By Focare Mould Co.,Ltd.

  • THIOPAQ® technology for the mining and metallurgical industries

    Abstract THIOPAQ® technology, developed and marketed by PAQUES Bio Systems B.V. in Balk, Netherlands, was first applied commercially in 1992 for the treatment of contaminated groundwater at the Budelco zinc refinery in the Netherlands. In its most basic form, a THIOPAQ® system essentially consists of two biological process stages in series: (i) sulfate reduction to sulfide (anaerobic stage), ...


    By Paques B.V.

  • Water and wastewater management technologies through the centuries

    The aim of this paper is to propose a journey through the history of water and wastewater management technologies in the ancient civilizations, a sort of Appian Way (“Via Appia”, the “regina longarum viarum”) through the Centuries. Moreover, this paper is a sort of short summary of papers presented in the first two IWA Specialty Conferences on Water and Wastewater Technologies in ...


    By IWA Publishing

  • Innovative technologies for management of stormwater and combined sewer flows

    Stormwater flows have historically been considered as harmless. Studies have shown that these flows cannot be dismissed as easily. Chebbo (1992), Marsalek et al.,(1997) and others have shown that stormwater is a source of diffuse pollution with a high source of total suspended solids (TSS), adsorbed hydrocarbons (HC) and nutrient loads (N, P, etc..). All these factors influence the quality of the ...

  • MVC technology to recover oil from SAGD facility

    The Facility The SAGD Facility is called “Orion” and consists of 4 major processes: Steam Generation, Injection/Recovery Wells, Deoiling and Water Purification, for recovery of oil. The Players Aquatech will be working alongside Shell Canada (formerly BlackRock Ventures), the developer and IMV Projects, the integration engineers. ...

  • Equipment and technology review: rocscience tunneling applications

    Allen Gwynnes Pumps– name resurrected With a design and manufacturing history stretching back 150 years, Allen Gwynnes Pumps, a name long associated with the manufacture of large, performance critical pumps, is once again an active force in the market place, operating from its new head office location in Middlesbrough, UK. The company was acquired by NEI during the 1970’s, and then became part ...


    By Rocscience Inc.

  • Applying multi-criteria decision analysis to select WSUD and LID technologies

    Water Sensitive Urban Design (WSUD) and Low Impact Development (LID) principles were investigated in Dhaka's drainage network using ‘Regime in Balance’ strategy for Average Recurrence Interval (ARI), Y = 100 years. Three feasible alternatives, such as, leaky-well, soak-away and infiltration trench were identified and designed to improve Dhaka's present ...


    By IWA Publishing

  • Geotube Dewatering Technology For Lagoon Cleanout At Poultry Processing Plant - Case Study

    THE CHALLENGE: In 2006, one of Mexico's largest poultry processing plants was experiencing high levels of BOD discharge into the local river because their two sludge lagoons were full sludge with a high percentage of solids. The plant was expanding operations and had no place to store the additional sludge that would be generated or any onsite means of removal and dewatering. The problem ...

  • What are the best companies for Zero Liquid Discharge Equipment and Technology?

    With an increasing push for environmental protection, many industrial facilities and effluent regulators are making decisions that lessen their impact on the environment and human health. Changes and implementations are constantly being discussed and met both nationally and internationally to change the way industrial facilities discharge waste, and it is important to know which companies are the ...


    By SAMCO Technologies, Inc.

  • Urban pluvial flooding in Jakarta: applying state-of-the-art technology in a data scarce environment

    Available data relating to major pluvial flooding events in Jakarta, Indonesia were used to investigate the suitability of two different levels of sophistication in urban modelling tools for modelling these events. InfoWorks CS v9.0 was employed to build 1D and 1D/2D models of a 541 ha area of inner city Ciliwung River catchment which has a history of being particularly badly affected by flooding ...


    By IWA Publishing

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