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Biofilter Engineering Articles & Analysis
34 articles found
These benefits are perfectly matched for this project: construction of a subsurface biofilter cell system for the removal of selenium and nitrate. To meet this EPA requirement, the Irvine Ranch Water District (IRWD) developed a plan to address regional water quality treatment. The plan included the Cienega Filtration Facility adjacent to the Peters Canyon Channel that is specifically for removing ...
The Los Angeles County Sanitation District operates 11 wastewater treatment plants treating approximately 576 MGD for the massive population of the greater metropolitan LA County area. Six of the largest facilities the District operates are connected through a regional network of sewers and treatment facilities known as the Joint Outfall System (JOS), serving the water treatment needs of roughly ...
The Metropolitan District (MDC) Hartford Pollution Control facility is a state-of-the-art wastewater treatment facility that cleans up the water to the Connecticut river, as well as the region's sanitary waste streams. The lead design engineering firm was Aracadis, and the main facility also provides sludge treatment for all 3 of the MDC's satellite water pollution control ...
The Inland Empire Regional Composting Facility (IERCF) was constructed under a Joint Powers Authority agreement between the Inland Empire Utilities Agency and the LA County Sanitation Districts to manufacture exceptional quality compost that is good: for soil, plants, the environment, and public health. The in-vessel, 150,000 ton per year co-composting facility processes a blend of green ...
MICROBE-LIFT®/HOG was designed for use in manure pits where it has been used successfully for over thirty years. One of the major benefits provided by this technology is substantial reduction in sulfur‐containing odors. Based on years of successful treatment controlling sulfide odors, the goal of this testing was to determine the potential for utilizing MICROBE-LIFT® technology in ...
How simply turning down you degasser can improve your biofilter health. With the data gathered from the Blue Unit Lab Station, we could see that a biofilter was performing poorly and that bicarbonate in the system was very low. We came up with a few actions to solve the problem. One of them was to turn down the degasser. The farm followed our advice and the biofilter improved ...
About the Project Summary: The apparent simplicity of the biofiltration process is deceptive. Various biofilter designs have been applied to wastewater odors since the 1920s, however, the acceptance of biofilters by the industry has been hampered by unreliability in the majority of designs. The BIOCUBE™ System, as patented by Biocube, Inc., is the only system to have eliminated the limits ...
About the Project Summary: The apparent simplicity of the biofiltration process is deceptive. Various biofilter designs have been applied to wastewater odors since the 1920s, however, the acceptance of biofilters by the industry has been hampered by unreliability in the majority of designs. The BIOCUBE™ System, as patented by Biocube, Inc., is the only system to have eliminated the limits ...
There are many factors which contribute to the overall biofilter performance. These are maturation time, temperature, oxygen levels, redox control, contact time, and adequate backwash conditions. The time it takes the biofilter to reach an adequate level of biological activity is a very important design consideration. ...
There are many factors which contribute to the overall biofilter performance. These are maturation time, temperature, oxygen levels, redox control, contact time, and adequate backwash conditions. The time it takes the biofilter to reach an adequate level of biological activity is a very important design consideration. ...
Biogeochemical processes in subsurface flow constructed wetlands are influenced by flow direction, degree of saturation and influent loading position. This study presents a simulation tool, which aims to predict the performance of the unit and improve the design. The model was developed using the HYDRUS program, calibrated and verified on previously measured bromide (Br−) pulse tracer tests. ...
Pilot-scale biofilters treated with real groundwater were established to systemically investigate the interactions between ammonia, iron and manganese removal. When both of ammonia and manganese in influent were about 1 mg/L, they were quickly removed; but when manganese was above 3 mg/L, ammonia removal was affected significantly. When total iron was above 5 mg/L, the oxidization rate of ...
Analysis of the impacts of nitrogen, phosphorus and potassium supplementation on biofilter performance for organic carbon removal was studied on laboratory-scale biofilter columns. Three dual media biofilter columns were fed with synthetic raw water C:N:P ratios of 546:24:1, 100:10:1, and 25:5:1 (w/w) to simulate nutrient limited and two nutrient supplemented conditions, respectively. ...
A novel horizontal flow approach was used, which permitted the use a 2.8m high biofilter bed and incorporation of humidifier in the same vessel, resulting in up to 70% footprint reduction. ...
ABSTRACT: The following paper is a comparison of an organic media biofilter and a synthetic media biofilter for the treatment of residual odors emanating from the operation of a biosolids dewatering and truck loading system at the City of Toronto's Ashbridges Bay Treatment Plant. The system compared was an in-ground, header/lateral system operated in a forced draft, up flow, open top ...
Stabilisation affects performance of stormwater biofilters operating under intermittent wetting and drying, mainly due to wash-off of filter material. Understanding the dynamics of solids wash-off is crucial in designing stormwater biofilters. The current study analysed the dynamics of solids wash-off in stormwater biofilters and quantified the loss of solids from the filter. Four Perspex™ ...
In this study, an up-flow anaerobic biofilter (AF) was operated to investigate the efficiency of anaerobic ammonium oxidation (ANAMMOX) in treating low strength ammonia (46.5 mg/L) at ambient temperatures (20.3–23.2 °C). Microbial compositions and functional populations of the upper (140–190 cm), middle (40–140 cm), and lower (0–40 cm) parts of the biofilter were monitored using scanning ...
Fouling is a major challenge for low-pressure membrane drinking water treatment systems. Previous research has demonstrated that under the right conditions, biofiltration is an effective method to reduce fouling of low-pressure polymeric membranes. This study provides additional insight into the effect of biofiltration as a pretreatment for fouling reduction by using river water with different ...
Stormwater biofilters are used to treat stormwater runoff. In countries with cold winter climates, biofilters are subject to low temperatures which, in some cases, are combined with potentially high salt concentrations from road de-icing, potentially affecting the biofilter's performance. Since stormwater biofilters have been developed without consideration of their critical winter use, ...
Biofilters have been shown to effectively treat stormwater and achieve nutrient load reduction targets. However, effluent concentrations of nitrogen and phosphorus typically exceed environmental targets for receiving water protection. This study investigates the role of filter media, vegetation and a saturated zone (SZ) in achieving co-optimised nitrogen and phosphorus removal in biofilters. ...