anaerobic digestion of water Articles
-
Is human excreta a waste?
Every day a huge amount of excreta is being produced by human society and it is also considered one of the most unwanted waste/refuse of the society because of its nuisance and diseases causing characteristics. However, it is also utilised as a fertiliser and soil conditioner in several countries such as India and China. Presently most common sanitation concept is centralised treatment of human ...
-
Operation of an anaerobic filter compared with an anaerobic moving bed bioreactor for the treatment of waste water from hydrothermal carbonisation of fine mulch
This experimental study investigates the anaerobic digestion of waste water from hydrothermal carbonisation of fine mulch (wood chips) in combination with a co-substrate for the first time. Two anaerobic reactors, an anaerobic filter (AF) and an anaerobic moving bed bioreactor (AnMBBR), were operated over a period of 131 days at mesophilic conditions. The organic loading rate was increased to ...
-
A new solids technology train: can 70% volatile solids reduction and class a biosolids be achieved from digestion?
There has been an increase in interest amongst utilities to develop solids technology concept trains that result in solids volume reduction for land application. For example, the Water Environment Research Foundation has recently initiation the OWSO “optimization” program in part to develop concepts that reduce sludge volumes for beneficial reuse or disposal. Another concept that has ...
-
glass fused to steel tanks
After firing at 820°C-930°C high temperature, the molten glass reacts with the steel plate surface to form an inert and inorganic bond, which combines the strength and flexibility of steel and outstanding corrosion resistance of glass, so Glass-Fused-to-Steel tanks can provide many advantages over standard epoxy or weld painted storage tanks. Glass-Fused-to-Steel technology is the premium ...
-
Linking community profiles, gene expression and N-removal in anammox bioreactors treating municipal anaerobic digestion reject water. Environmental Science & Technology
Abstract: Anaerobic ammonium oxidation (anammox) requires 60% less oxygen and no external organic carbon compared to conventional biological nitrogen removal (BNR). Nevertheless, fullscale installations of anammox are uncommon, primarily owing to the lack of well-established process monitoring and control strategies that result in stable anammox reactor performance. The overarching goal of this ...
-
Study examines anaerobic digestion’s role in water, agriculture, and biofuels issues
According to a new analysis, working on both clean water and biofuels production in tandem may reap significant environmental and economic benefits. For example, using anaerobic digestion to treat manure could prevent nutrient-runoff pollution and create a renewable energy source, according to the study by EcoEngineers and Goss & Associates. Looking at Iowa farming, the analysts estimated ...
-
Turkish biogas monitored with AEMS
Application Anaerobic digestion – waste water Equipment AEMS Location Antalya, Turkey Customer Kuzu Group and General Directorate of Antalya Water and Wastewater Administration Requirement The customer was looking for: A low maintenance gas monitoring system Local sales support and service through Geotech’s distributor in Turkey, Ram Completely automatic operation Remote ...
-
Economic viability and critical influencing factors assessment of black water and grey water source-separation sanitation system
The black water and grey water source-separation sanitation system aims at efficient use of energy (biogas), water and nutrients but currently lacks evidence of economic viability to be considered a credible alternative to the conventional system. This study intends to demonstrate economic viability, identify main cost contributors and assess critical influencing factors. A technico-economic ...
-
Food waste prevention roadmap factors in water savings
Food waste is a critical problem affecting business, communities, the environment and water scarcity worldwide, but the problem is particularly acute in the United States, according to a report from ReFED. ReFED is a group of businesses, nonprofits, foundations, and government leaders committed to reducing food waste. It was formed in early 2015 to create a Roadmap to Reduce U.S. Food Waste, the ...
-
Effect of various leachate recirculation strategies on batch anaerobic digestion of solid substrates
Various leachate recirculation strategies were applied to a batch-wise operated solid-phase digestion system in laboratory-scale tests. Comparative experiments with both continuous and intermittent leachate recirculation revealed no advantages of a continuous flow. Results suggest that leachate recirculation should not be carried out continuously during process initialisation when methanogenesis ...
-
Fats, Oils and Grease Reclamation: A Modern Perspective on Municipal Fats, Oils & Grease Management
Brian Levine discusses the growing trend of wastewater utilities to combine best practices with cutting-edge technologies, like Greasezilla, to support resource recovery, efficiency and sustainability Fats, oils and grease (FOG) are a dirty and difficult challenge for the wastewater industry. Annually, FOG costs municipalities millions of dollars to manage. When not properly intercepted, FOG can ...
-
How Much Energy Exists in Wastewater?
Through technologies like anaerobic digestion, wastewater treatment plants can make use of wastewater’s latent energy. The energy potential of untreated wastewater has been widely discussed, but is there any reliable measure of how much energy is available in effluent? In the United States alone, wastewater holds enough energy potential to generate 851 trillion BTU of energy annually, ...
-
East Lansing Water Resource Recovery Facility, USA - Case Study
The City of East Lansing’s Water Resource Recovery Facility (formerly named the Wastewater Treatment Plant) provides wastewater treatment for the City of East Lansing, Michigan State University and Meridian Charter Township. A new environmentally friendly digester is being added to the section of the plant which handles biosolids, the industry term for anything that goes into a drain or ...
-
Behavior and fate of anthropogenic substances at a Swedish sewage treatment plant
The behavior and fate of anthropogenic substances during sewage treatment were investigated at a sewage treatment plant (STP) in Sweden which uses mechanical, chemical, and biological methods for sewage treatment and anaerobic digestion of sludge. Influent and effluent water, and sludge from two specific treatment sites were sampled. Mass balances were calculated from measured concentrations of ...
-
Microalgae growth for nutrient recovery from sludge liquor and production of renewable bioenergy
Proof-of-concept has been demonstrated for a process that will utilize nutrients from sludge liquor, natural light, and CO2 from biogas to grow microalgae at wastewater treatment plants. This process will reduce the impact of returning side-streams to the head of the plant. The produced algae will be fed to anaerobic digesters for increased biogas production. Dewatering of anaerobically digested ...
-
Recovery of ammonium from digestate as fertilizer
Ammonia inhibition can be a major problem during anaerobic digestion of manure and municipal and industrial sludges. Anaerobic digestion is sensitive to higher NH3-N concentrations, which are inhibiting and at certain levels even toxic for methanogen bacteria. The Nijhuis Ammonium Recovery (AECO-NAR) system can solve this problem and removes ammonium from digestate or other substrate for ...
-
Static gas analyser at United Utilities case study
About the customer United Utilities, Lancaster, England Equipment GA3000 Location United Kingdom Customer United Utilities Requirement The customer required its own precise, detailed and accurate recording of the concentrations of methane (CH4), carbon dioxide (CO2) and hydrogen sulphode (H2S) that it sends to its two CHP engines. Dave Bega, Installation and Commissioning Manager for GCA ...
-
GEM + UASB: Tortilla Processing - Case Study
Introduction A prominent tortilla manufacturer was designing a new production facility using nixtamal (grinding of corn) into tortillas. Prior to gaining approval for the new facility, it was imperative that Client submit a wastewater treatment plan for permit. Specific design issues, such as fire roads and utilities, required careful planning with Client’s full design team (electrical ...
-
Disruptive Technology for Water: Energy
In his final blog on how disruptive technologies can overcome serious challenges faced by the water industry, Matt Hale, HRS Heat Exchangers’ International Sales & Marketing Director discusses the important of energy efficiency and generation. While anaerobic digestion is widely recognised as a water treatment technology around the world, its capacity for energy generation (either ...
-
Grey water treatment in upflow anaerobic sludge blanket (UASB) reactor at different temperatures
The treatment of grey water in two upflow anaerobic sludge blanket (UASB) reactors, operated at different hydraulic retention times (HRTs) and temperatures, was investigated. The first reactor (UASB-A) was operated at ambient temperature (14–25 °C) and HRT of 20, 12 and 8 h, while the second reactor (UASB-30) was operated at controlled temperature of 30 °C and HRT of 16, 10 and 6 h. The two ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you