Passive Water Treatment Articles

  • What is a wastewater treatment system and how does it work?

    For industrial companies producing wastewater as part of it’s process, some type of wastewater treatment system is usually necessary to ensure safety precautions and discharge regulations are met. The most appropriate wastewater treatment system will help the facility avoid harming the environment, human health, and a facility’s process or products (especially if the wastewater ...


    By SAMCO Technologies, Inc.

  • Treatment of Cyanide Bearing Wastewaters

    Water Innovations utilizes a 2-stage Cyanide Oxidation (CN) system that can treat from 2 GPM to 10 GPM. In the first stage of treatment, hypochlorite oxidizes cyanide to cyanate. It consists of two double-wall “Batch” Cyanide Oxidation Tank and an accumulation tank for cyanide-bearing rinse water, each tank equipped with one mixer. Wastewater containing cyanide will be pumped or flow ...


    By Water Innovations, Inc

  • Mine backfill

    Mine backfill is defined as the material used to fill the cavities (i.e., stopes) created by underground mining. Backfilling can be a means to dispose of sludge and/ or tailings which may contain hazardous materials and to reduce surface environmental impacts by storing tailings underground. Alternately, backfilling with nonhazardous materials can allow for mining productivity improvements. To ...


    By WesTech Engineering, Inc.

  • Bayview Community - Wastewater Treatment System

    Formed just after the Civil War, “Bayview” is a 300 year‐old predominately African American community. The residents of the community organized and created the Bayview Citizens for Social Justice In 1998. The group formed partnerships to improve the lives of the community by installing a water and wastewater treatment system. Funding came from multiple Federal. State and County ...


    By Bio-Microbics, Inc.

  • From Wastewater Treatment to Sweet Pineapples

    In wastewater treatment, ammonia that is removed from sewage used to be discharged directly to the atmosphere. Nowadays, studies have identified that ammonia emissions are of major concern to air quality. This has led to a new way of thinking. Sulzer offers modern closed-air-loop systems for wastewater treatment that transform ammonia into a common soil fertilizer. This reuse of a waste product ...


    By Sulzer

  • Effect of algal recycling rate on the performance of Pediastrum boryanum dominated wastewater treatment high rate algal pond

    Recycling a portion of gravity harvested algae promoted the dominance of a rapidly settling colonial alga, Pediastrum boryanum (P. boryanum) and improved both biomass productivity and settleability in High Rate Algal Pond (HRAP) treating domestic wastewater. The effect of algal recycling rate on HRAP performance was investigated using 12 replicate mesocosms (18 L) that were ...


    By IWA Publishing

  • Wastewater Level Measurement Techniques

    Level monitoring and control is a fundamental requirement in any wastewater treatment process. You will find level instrumentation installed at even the simplest treatment plants for pump control, chemical storage tanks and process level controls or alarms. Operators have only limited or emergency control over treatment plant influent, so level controls and instrumentation play an important role ...


    By Greyline Instruments Inc.

  • Municipal Innbygda, Norway case study

    Project Name: Innbygda WWTP Location: Trysil, Norway Type of Plant: Municipal Technology Used: CFAS + DAF Separation (chemical precipitation of P) Operational Since: November 2010 The Challenge the municipality of trysil is home to the largest ski resort in scandanavia. due to ...


    By Biowater Technology

  • Municipal Bloomingdale, MI USA - Case Study

    Project Name: Bloomingdale WWTP Upgrade Location: Bloomingdale, MI USA Type of Plant: Municipal - Nitrification Technology Used: Biowater CMFF Biomedia Used: Biowater BWT-X Operational Since: 2013 The Challenge Bloomingdale’s existing wastewater ...


    By Biowater Technology

  • Profile: Performance of diatomite/iron oxide modified nonwoven membrane used in membrane bioreactor process for wastewater reclamation

    MBR technology has obvious advantages over conventional activated sludge process such as high pollutant removal efficiency, complete solid–liquid separation and little sludge waste. However, high membrane cost, intensive energy consumption and serious membrane fouling limited its wide application. Therefore, low-cost filters, such as nonwoven, mesh and filter cloth have been applied to ...


    By IWA Publishing

  • Auto parts manufacturer reduces coolant purchase costs and eliminates used coolant disposal in first 12 months case study

    Challenge When Ogura Corporation, a Detroit based parts manufacturer, was faced with the dilemma of excessive coolant consumption, PRAB’s Fluid Filtration division was able to offer the optimal solution: Coolant Recycling. Ogura’s primary business activity is the manufacture of air conditioner parts for the automotive industry. One of their major customers is the Ford ...


    By PRAB, Inc

  • Biofilm formation and permeate quality improvement in Gravity Driven Membrane ultrafiltration

    The effects of biofilm development on ultrafiltration membranes with regard to permeate stability and permeation rates were investigated using Gravity Driven Membrane (GDM) filtration. The first part of the study aimed at evaluating the influence of the biofilm on permeate flux quality and quantity with regard to Assimilable Organic Carbon (AOC) degradation. In addition, two types of biological ...


    By IWA Publishing

  • Town of St. Marys Wastewater Treatment facility, Ontario, Canada case study

    Summary of Field Trials for Bio Organic Catalyst 1. Bio-Organic Catalyst Technology Description Bio-Organic Catalyst [BOC] is a concentrated liquid that contains patented amphiphilic molecules or surfactant. The organic catalyst contains no bacteria and is a nontoxic and biodegradable product. The functional mechanism is attributed to the ...


    By EcoJump LLC

  • Wastewater-Primary Treatment

    Primary Treatment is defined as a wastewater treatment process that takes place in a rectangular or circular tank and allows those substances in wastewater that readily settle or float to be separated from the water being treated. This process achieves solids separation. The solids readily available to settle to achieve sedimentation will do so in a settling tank referred as a clarifier. On the ...

  • Role of primary sedimentation on plant-wide energy recovery and carbon footprint

    The goal of this paper is to show the effect of primary sedimentation on the chemical oxygen demand (COD) and solids fractionation and consequently on the carbonaceous and energy footprints of wastewater treatment processes. Using a simple rational procedure for COD and solids fraction quantification, we quantify the effects of varying fractions on CO2 and CO2-equivalent mass flows, ...


    By IWA Publishing

  • Household rainwater harvesting system – pilot scale gravity driven membrane-based filtration system

    This paper presents the results of a pilot scale study consisting of pre-treatment with a granular activated carbon (GAC) filter followed by membrane filtration. Detailed characterisation of rainwater tanks has highlighted that turbidity, dissolved organic carbon (DOC) and heavy metals, in particular lead, were not compliant with the 2004 Australian Drinking Water Guidelines (ADWG). Further, ...


    By IWA Publishing

  • Gravity driven membrane filtration system to improve the water quality in rainwater tanks

    The characterisation of rainwater in metropolitan Sydney and in rural New South Wales was undertaken. The results showed that factors such as the lack of vehicular traffic, air pollution and urban contamination meant that rural rainwater water quality was better. The rain water collected in both metropolitan and rural areas generally complied with the 2004 Australian Drinking Water Guidelines ...


    By IWA Publishing

  • Gem-D Series - Case Study

    Introduction Clean Water Technology, Inc., the creator of the Gas Energy Mixing (GEM) System, introduces their newest in technology The GEM - D Series for municipal water and wastewater applications. The GEM-D Series is a hybrid dissolved air – flotation system. What makes the GEM-D Series better than the rest? Introduction of air through Liquid Solid Gas ...


    By Clean Water Technology, Inc.

  • Penwhirn & Glengap WTW - New water treatment works

    Scottish Water 16.5 and 4.5 MLD respectively The Client Scottish Water is the UK's fourth largest water utility, responsible for the whole of Scotland and islands around the Scottish coast, including the major cities of Glasgow, Edinburgh and Aberdeen. They provide drinking water and wastewater treatment for a population of approximately 4.7 ...


  • Biostyr, Blackburn WwTW, united utilities

    Client United Utilities (UU) are the 2nd largest water company in England/Wales. They are responsible for an area in the north west of the UK, which includes major cities such as Manchester and Liverpool. The Client's Needs As part of the overall improvement to the site at Blackburn, VWS secured the final phase of the works for the supply of a new tertiary ...


Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you