trickling filter Articles
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Winter Maintenance for Trickling Filters
Article by: Brentwood, 01-04-2018 | Category: Water & Wastewater As winter approaches and cold weather sets in, both the air and wastewater temperatures of your trickling filter can drop to the single digit area, so we want to bundle it up to prevent it from catching a “cold.” It is critical to preserve heat within the filter so the bugs are happy, healthy, and keep working ...
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Wall Township, New Jersey - Trickling Filter installations applications - Case Study
Application The South Monmouth Regional Sewerage Authority (SMRSA) sought to replace its rock media with plastic media in 2001. They studied many pilot tests and opted to work with Brentwood based on media strength, its inherent superiority in performance, and Brentwood’s manufacturing quality and capacity. The two retrofitted trickling filters with medium-density cross flow plastic media ...
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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 ...
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Trickling Filter Technology Is Still Relevant
Trickling filters have been the workhorse of the biological wastewater treatment industry for over 100 years. Trickling filters have proven to efficiently remove pollutants from wastewater since their inception, earning recognition as a technology that will continue to serve the industry well into the future. History Prior to the use of structured sheet media, rock was used in trickling filters ...
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Grenada, MS - Case Study
In 1992, the city of Grenada replaced a Trickling Filter System with an Aerated Lagoon System using twelve S&N Airoflo 10 HP Floating Brush Rotors. Various upgrades have been made to the equipment on an "as needed" basis. Some of the original Wastewater Lubricated Bearings are still in use ...
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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 can ...
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Biotreatment of polluted air from a sludge treatment building in a BTF
The problem Additionally to the basic level of pollution with malodorous pollutants, polluted air from a building with sludge presses showed temporarly extreme VOC-peak-loadings up to 1800 to 2000 mg/m³. Solution of the problem By a subsequent treatment in a two-step bio-trickling filter supported by LEVAPOR carrier for immobilisation of microorganisms, over 90% of the peaks have been ...
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Biotreatment of off-gases from a waste water buffer
1. The Problem As on alternative to an initially planned adsorptive treatment by activated carbon of gases emitted by a buffer for from industrial effluents, also a biological treatment had been was investigated. 2. Solution of the problem Treating the off-gases in a two-stage bio-trickling filter using microorganisms attached to LEVAPOR carrier the problem has been was ...
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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 all over ...
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Hydraulic modeling: The often overlooked factor in treatment plant design
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 can ...
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Biotretment of polluted air of a storage for used plastics in bio-trickling filter (BTF)
The problem High concentrations of unhealthy sporogenic funghi and bacteria in malodorous gases of a used plastic storage could not be purified by classical compost filters, because of their high emissions of microorganisms. Problem solution By indoor-biofiltration in a bio-trickling filter using microbially activated LEVAPOR carrier the polluted air has cleaned until the required quality ...
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Treatment of odour containing hydrogen sulphide released from pharmaceutical wastewater treatment plant with SBR process by bio-trickling filter
In order to check the removal efficiency of odour containing Hydrogen Sulphide (H2S) from Sequencing Batch Reactor (SBR) process at lower temperature, deodorisation experiment was carried out for four months at pharmaceutical wastewater treatment plant in winter by the bio-trickling filter packed with ZX01 stuffing. The results suggested that the removal efficiency of H2S was higher than 98% and ...
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Designing Trickling Filter Support Systems
The main purpose of a trickling filter, or biotower, support system is to support the media above. But did you know that supports also play a crucial role in successful system operation and performance? Understanding the importance of support systems, the benefits and limitations of manufacturer-supplied systems, and what pertinent design information to be cognizant of will help expedite a ...
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Bissell Point, Missouri - Trickling Filter installations applications - Case Study
Bissell Point, the largest wastewater treatment facility in Missouri, expanded their facility in the mid-1980s to provide secondary treatment. The goal of the upgrade was to select a reliable process that would achieve high-rate BOD removal. They opted for trickling filter technology and worked with Brentwood to install roughly 3 million cubic feet of plastic media in 6 towers. Nearly 25 years ...
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Trickling filter design guideline – How do trickling filters work?
Please watch the video tutorial here: https://youtu.be/r-0wRzGbSqw Trickling filters are biological reactors within wastewater treatment plants which are used to remove organic matter and/or ammonia from wastewater. Compared to the activated sludge process the microorganisms are not suspended in the mixed liquor but they are attached to a fixed bed surface. Nowadays, the fixed bed surface is ...
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The Rhizopur® process ten years on: a green solution for sewage treatment in small communities
Ten years ago the Rhizopur® process was conceived in order to treat sewage from small towns. Since 1999 when the first Rhizopur® plant was commissioned, the number of facilities has been growing steadily and today there are more than fifty Rhizopur® facilities in France. This process combines three existing technologies, i.e. biofilm, infiltration/percolation and mineralisation in constructed ...
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Application of high rate nitrifying trickling filters to remove low concentrations of ammonia from reclaimed municipal wastewater
The interference of ammonia with the chlorination process is a problem for many reclaimed water treatment plant operators. This paper presents the findings from a series of pilot experiments that investigated the efficacy of high flow rate nitrifying trickling filters (NTFs) for the removal of low concentrations of ammonia (0.5–3.0 mg N L−1) from reclaimed wastewater. Results showed that ...
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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 ...
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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 ...
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The impact of organic carbon on the performance of a high rate nitrifying trickling filter designed to pre-treat potable water
The application of nitrifying trickling filters (NTFs) to potable water treatment is less well understood than their application to wastewater treatment, particularly regarding the effect of low ammonia substrate concentrations and organic carbon loading on filter performance. A large pilot-scale NTF was operated under conditions that simulated the raw water quality of poorly protected catchments ...
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