trickling filter system Articles

  • Can Trickling Filters Be Used in a BNR Process?

    Nitrogen and phosphorus are nutrients in a wastewater treatment system. A Biological Nutrient Removal (BNR) process removes either portions of the influent total nitrogen through denitrification or portions of the influent phosphorus through anaerobic selection or both. In a BNR process, ammonia is ultimately converted to nitrogen gas, not just nitrate or nitrite. If you have requirements for ...


    By Brentwood Industries, Inc.

  • German research underway on trickling filter practices

    Trickling filter technology is one focus of a joint research project – EXPOVAL – funded by the German government that will validate engineering guidelines and optimum conditions for achieving high performance. Dr. Christian-Dominik Henrich of GEA 2H Water Technologies Gmbh reports. Poor wastewater treatment is one of the biggest enemies of a safe and sustainable water supply ...

  • Hydraulic modeling - Bethel Park Municipal Authority - Case Study

    Treatment plant hydraulics is often overlooked as one of the most important aspects of treatment plant design, especially in plant upgrade scenarios where retrofitting new equipment or processes into the existing treatment train will create additional hydraulic restrictions.  Many existing plants already have a minimal amount of head available for passing peak flows through the system, which ...


    By Innovative Hydraulics

  • Filter refurbishment program for Southern Water in Eastrey case study

    Purpose of rental units: To allow for the refurbishment of trickling filter beds, initially the SAF units were used for both carbonaceous treatment and ammonia removal. Once the trickling filter beds were refurbished the SAF units were then used to polish the effluent (ammonia removal) from the trickling beds whilst they seeded up, this process typically taking around 4-8 weeks. ...


    By WPL Ltd

  • Village of Maybrook, NY Sludge Dewatering System

    Project Summary: The Village of Maybrook WWTP process consists of primary clarification, trickling filters, and secondary clarification. Primary sludge and trickling filter humus is anaerobically digested. The belt filter press dewaters the sludge eliminating the need for sludge drying beds. The belt filter press discharge cake solids are consistently in the 25 to 30 percent range, which is ...


    By BDP Industries

  • Filter refurbishment program for Southern Water in Eastrey

    Peak flow to treatment: PE of site: 2090 (550 m3/day) Formula A site Units supplied: 2 off steel 500 pe units (Rental units) Purpose of rental units: To allow for the refurbishment of trickling filter beds, initially the SAF units were used for both carbonaceous treatment and ammonia removal. Once the trickling filter beds were ...


    By WPL Ltd

  • Treatability study of two hybrid-passive treatment systems for landfill leachate operated at cold temperature

    Cold ambient temperatures can negatively affect the performance of passive and semi-passive landfill leachate treatment systems and decrease treatment efficiency. Cold temperature leachate treatment efficiencies were compared between a commercially available semi-passive treatment system and a passive peat and wood shaving biological trickling filter. The addition of an active fixed-film ...


    By IWA Publishing

  • Tailing propensity in the ultraviolet disinfection of trickling filter and activated sludge wastewater treatment processes

    In this paper, the effect of suspended flocs on the tailing of ultraviolet (UV) disinfection kinetics of secondary effluents was examined. To achieve this goal, final effluents produced in two processes for treating wastewater; namely, a trickling filter system and an activated sludge system, were collected and their UV disinfection were compared. Tailing of the UV dose response curve was ...


    By IWA Publishing

  • Performance evaluation of a novel open trickling filter for the post-treatment of anaerobic effluents from small communities

    The objective of the work is to evaluate the performance of an innovative design of a trickling filter for small population sizes, which has been implemented for the post-treatment of sanitary effluent from a UASB (upflow anaerobic sludge blanket) reactor. The unit, named open trickling filter (OTF), operates with no side walls, no perforated bottom slab and no secondary settler. The OTF packing ...


    By IWA Publishing

  • Batch WWT System Reduces Cost, Sludge

    Chapmans's ice Cream has become the first dairy operation in Ontario to have its own wastewater trearment plant, according to the Markdale Standard, the local newspaper. The firm selected a state-of-the-art Fluidyne ISAM (Inregrated Surge Anoxic Mix) anaerobic/aerobic batch reactor after also considering conventional SequencingBatch Reactor (SBR), up-flow sludge blanket filtration (USBF) and ...


    By Fluidyne Corporation

  • Warden Biomedia Chosen for Swallow Fields Business Park Wastewater Treatment Upgrading Project by Marsh Industries - Case Study

    The Swallow Fields Business Park in Hailsham Sussex was developed in open countryside with no main sewage connections. The development is a mix of residential, business and retail accommodation. A major concern for BNP PARIBAS, the Consultant Engineer, and the Environment Agency was the effective treatment and disposal of the raw sewage from the site where there is such variable loading. Marsh ...


    By Warden Biomedia

  • Physical–chemical characterization of sludge and granular materials from a vertical flow constructed wetland for municipal wastewater treatment

    The use of vertical flow constructed wetlands (VFCWs) is well developed in France and other countries for the treatment of wastewaters from small communities. The patented Azoé® process has been developed by a French company, SCIRPE, in order to improve denitrification and phosphorus removal as compared to classical VFCWs. It includes a biological trickling filter pretreatment ...


    By IWA Publishing

  • Treatment of wastewater from a school in a decentralized filtration system by percolation over organic packing media

    Based on results obtained in the laboratory a WWTP composed of a septic tank and an aerated percolating filter packed with organic media was built for a school. The system can treat 18 m3 d−1 and was operated with a hydraulic loading rate of 0.078 (m3 m−2 d−1). For 360 days different operational conditions including start-up; stabilization; operation with aeration and non aeration; effect of ...


    By IWA Publishing

  • Delphos, OH -MBR Case Study

    The City of Delphos evaluated several treatment options, including an oxidation ditch, when considering how to upgrade their aging trickling filter facility. Some of the factors considered in the decision making process included current and future permit compliance issues, fluctuating loading conditions, and treatment capacity. The city selected an Enviroquip MBR System ...


    By Ovivo

  • Potential of organic filter materials for treating greywater to achieve irrigation quality: a review

    The objectives of this literature review were to: (i) evaluate the impact of greywater generated in rural communities, with the emphasis on Jordanian conditions, on soil, plant and public health and assess the need for treatment of this greywater before it is used for irrigation, and (ii) assess the potential of different types of organic by-products as carrier material in different filter units ...


    By IWA Publishing

  • Army Truck Wash Depot case study

    The Problem: The Army Truck Wash Depot had a trickling filter that was not capable of handling the organic loading generated by heavy vehicle wash operation. The tricking filter was channeling the wastewater due to media that had been crushed by the weight of the biomass that could not be sloughed off. As a result, the ability to treat the wastewater for BOD ...


    By BioprocessH2O

  • A Simple Solution to Big Snail Problems - A Case Study at VSFCD’s Ryder Street Wastewater Treatment Plant

    A treatment facility operating on the northern edge of the San Francisco Bay, in Vallejo, California, was experiencing excessive growth of trickling filter snails in the plant’s two biotowers. Downstream of the biotowers, the snail shells would settle in the plant’s aeration basins and secondary clarifiers and cause major maintenance problems. Periodically the entire aeration basin and clarifier ...

  • The application of removal coefficients for viruses in different wastewater treatment processes calculated using stochastic modelling

    This study proposes that calculating and interpreting removal coefficients (K20) for bacteriophages in activated sludge (AS) and trickling filter (TF) systems using stochastic modelling may provide important information that may be used to estimate the removal of phages in such systems using simplified models. In order to achieve this, 14 samples of settled wastewater and ...


    By IWA Publishing

  • Alaska - Anadarko Oil Camp case study

    The "North Slope" of Alaska is one of the harshest environments in the world to survive in, let alone work in, on a daily basis. Temperatures can reach -70 degrees F and wind chill factors can reach -100 degrees F. The "Slope" is home to thousands of oilfield workers, many of who live in portable camps located in extremely remote locations. In such an environment, equipment must be reliable, ...


    By Quanics Incorporated

  • Potential of resource recovery in UASB/trickling filter systems treating domestic sewage in developing countries

    This paper aims to present perspectives for energy (thermal and electric) and nutrient (N and S) recovery in domestic sewage treatment systems comprised of upflow anaerobic sludge blanket (UASB) reactors followed by sponge-bed trickling filters (SBTF) in developing countries. The resource recovery potential was characterized, taking into account 114 countries and a corresponding population of ...


    By IWA Publishing

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