sludge feed Articles
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Practical test Xelletor
How does our Xelletor decanter centrifuge perform in real-life tests? What are the benefits? The clear benefits offered by our Xelletor range are demonstrated by a higher dry matter content and lower polymer and power consumption. At one wastewater treatment plant, for example, a 2.5% higher dry matter content was achieved. With two machines, the treatment plant could save disposal costs of ...
By Flottweg SE
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Effect of substrate feeding on viscosity evolution of anaerobic granular sludges
This work aims to describe the effect of the feeding regime of anaerobic activity tests on the limit viscosity (μlim) evolution of the granules. Batch experiments were performed with 3 different sources of substrate: acetate, peptone, and glucose. Despite, the substrate origin was shown to affect the μlim evolution of granules, no clear relationship was found between the μlim evolution, type of ...
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Techase Environment | How to Choose a Super-convenient Filter Press?
TECHASE NEW TECHNOLOGY: 80% MC Sludge Feeding Directly As we all know, it is general necessary for conventional deep sludge dewatering flow to control the sludge moisture content at about 95%, and then the final pressing stage can be realized. However, Some sludge with 80% MC has to be diluted first which is more complex and expensive. NEW TECHNOLOGY: In response to the above problem, Techase ...
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Sludge treatment reed bed facilities – organic load and operation problems
The dewatering of the sludge with loss on ignition between 50 and 65% will have a maximal drainage on the order of 0.008–0.020 L/s/m2. Dewatering of the sludge with loss of ignition higher than 65% of dry solids will have a maximal drainage on the order of only 0.001–0.004 L/s/m2, approximately five to 10 times lower. It can be seen that there is a tendency for the achievable dewatering result to ...
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Project - Roma Italy
Plant’s power: 2700 Nmc/d Biogas Daily feeding: Sewage Sludge Goal: To reduce sludge viscosity, to increase the yield of AD line and to reduce the sludge to disposal to saving money for the disposal. To see video, please click here ...
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Case Study | Techase 80% Sludge Feeding Application at Lingbi WWTP
This time, let me take you to Lingbi, Anhui, China to know more about Techase “80% sludge feeding directly” process. Conventional deep sludge dewatering projects generally need to control sludge MC at about 95%, and then start the final squeezing stage for deep dewatering. In this way, some sludge with 80% MC has to be diluted first which is more complex and expensive. Techase has ...
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Integrated side-stream reactor for biological nutrient removal and minimization of sludge production
Integrated processes to reduce in situ the sludge production in wastewater treatment plants are gaining attention in order to facilitate excess sludge management. In contrast to post-treatments, such as anaerobic digestion which is placed between the activated sludge system and dewatering processes, integrated technologies are placed in the sludge return line. This study evaluates the ...
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Netheridge STW Gloucester, Gloucestershire, United Kingdom - Case Study
Project Summary Project Due to a lack of control over the digestion stream over the years, Netheridge Sewage Treatment Works (STW) in Gloucester, England has incurred large fluctuations in gas production, made worse by the range of trade wastes that are accepted into the site. The Netheridge STW currently serves approximately 198,000 residents in Gloucester; however, the population is ...
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Sludge suspension from numerous differing steel industry residues
econ have been active for many years as a supplier of mixing units for the metal and steel industry. One of our long term clients requested that econ quote a system to produce a highly viscous suspension from nu-merous differing residues. The aim was to use this suspension as a protective layer inside the transport ves-sels of the hot, molten slag. Thus, a number of differing technical challenges ...
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Incineration Industry: Scrubber on Sludge Incinerator Reduces Atmospheric Emissions - Case Study
Aberdeen Sewage Treatment Plant in Aberdeen, Washington started up their new Electric Infrared Incinerator in May, 1981. The sewage sludge incinerator, product of Shirco, Inc., needed a pollution control device in order to meet state, local and federal requirements for atmospheric emissions, according to the emissions test on the unit performed January, 1982. Chosen was a Model 24×24- ...
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Mainstream partial nitritation and anammox in a 200,000 m3/day activated sludge process in Singapore: scale-down by using laboratory fed-batch reactor
A laboratory fed-batch reactor has been used to study under controlled conditions the performance of partial nitritation/anammox for the 200,000 m3/day step-feed activated sludge process at the Changi Water Reclamation Plant, Singapore. The similarity of the concentrations of NH4, NO2, NO3, PO4, suspended chemical oxygen demand (sCOD), pH, and alkalinity (ALK) between the on-site process and ...
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The occurrence of enhanced biological phosphorus removal in a 200,000 m3/day partial nitration and Anammox activated sludge process at the Changi water reclamation plant, Singapore
Mainstream partial nitritation and Anammox (PN/A) has been observed and studied in the step-feed activated sludge process at the Changi water reclamation plant (WRP), which is the largest WRP (800,000 m3/d) in Singapore. This paper presents the study results for enhanced biological phosphorus removal (EBPR) co-existing with PN/A in the activated sludge process. Both the in-situ EBPR ...
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Advanced sludge thickening technology for one of Australia’s largest treatment plants - Case study
The Luggage Pt WWTP which is owned and operated by Qld Urban Utilities is one of the largest treatment facilities in Australia, and one of the most advanced due its recycled water plant. In a recent upgrade, the existing rotary drum thickeners were replaced by HUBER Rotary Screw Thickeners, for the processing of raw sludge. Why Rotary Screw Thickener? HUBER's Rotary Screw Thickener is not a ...
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Thick sludge digestion - research design and validation of key process unit operations
ABSTRACTAdvances in the design of anaerobic digesters have seen a trend towards digestion of thicker sludges in the US, UK and elsewhere. This includes a number of new facilities using bolt on technologies to mesophilic anaerobic digestion such as Cambi Thermal Hydrolysis, Prepasteurisation and Biological Hydrolysis. Cambi Thermal hydrolysis utilises thickenedsludge and the digestion process is ...
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A comparative study of an up-flow aerobic/anoxic sludge fixed film bioreactor and sequencing batch reactor with intermittent aeration in simultaneous nutrients (N, P) removal from synthetic wastewater
The performance of two bench scale activated sludge reactors with two feeding regimes, continuous fed (an up-flow aerobic/anoxic sludge fixed film (UAASFF) bioreactor) and batch fed (sequencing batch reactor (SBR)) with intermittent aeration, were evaluated for simultaneous nutrients (N, P) removal. Three significant variables (retention/reaction time, chemical oxygen demand (COD): N ...
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Huber screenings and Sludge treatment equipment in Northern Ireland - Case study
Almost a year ago we started up our screenings and sludge treatment equipment that we had supplied to Northern Ireland. Our equipment is installed in the newly constructed North Coast wastewater treatment plant of Northern Ireland Water at Craigtownmore. Our contract included supply, installation and start-up of our systems for screenings handling, for mechanical sludge thickening and sludge ...
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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 Mixers (LSGM). Thick layers of ...
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Activated sludge optimization using ATP in pulp and paper industry
The activated sludge process is an old technology, but still the most commonly used one for treatment of wastewater. Despite the wide spread usage the technology still suffers from instability (Tandoi et al. 2006) and high operating cost. Activated sludge processes often carry a large solids inventory. Managing the total inventory without interference is the key component of the optimization ...
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Solidification / Immobilisation of sludge from physical-chemical WWT process
In 2003 econ received an inquiry from a service company operating an industrial waste water treatment plant. At the end of the physical-chemical WWT process this client generated metal-hydroxide sludge from his chamber filter presses. Originally he discharged the sludge into skips and brought it to a hazardous waste landfill. At this landfill, a solidification process was used to stabilise the ...
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Municipal WWTP Digester Cleanout - Jekyll Island, Georgia - Case Study
Coastal Georgia's Jekyll Island Stale Park, a popular vacation destination, is also home to about 750 permanent residents. John Day, Superintendent of the Water and Wastewater plants, operates the Jekyll Island Authority's I MGD wastewater treatment plant. Structural modifications and improvements to the plant's two anaerobic digesters were scheduled for early 2004. The job was publicly bid and ...
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