sludge heating Articles

  • Steam injection heating of biosolids & sludge for Anaerobic Digestion

    The article focuses on the integration of Direct Steam Injection (DSI) heating as a method for heating of Municapal, Industrial, Food, & Agricultural wastewater streams. Common applications are anerobic digestion, biogas production, waste de-activation, and FOG (Fats-Oils-Grease) heating. Topics covered include how DSI works, how to select a DSI heater suitable for viscous & difficult to ...


    By ProSonix LLC

  • The effect of lime-dried sewage sludge on the heat-resistance of eco-cement

    The treatment and disposal of sewage sludge is a growing problem for sewage treatment plants. One method of disposal is to use sewage sludge as partial replacement for raw material in cement manufacture. Although this process has been well researched, little attention has been given to the thermal properties of cement that has had sewage sludge incorporated in the manufacturing process. This ...


    By IWA Publishing

  • Steam injection heating of Waterwater, Sludge & BioSolids, & High Viscosity Fluids

    A number of unique challenges emerge in the heating of agricultural, municipal, and food waste streams in anaerobic digestion process and biogas production. Heating devices are subject to variable size particulate, fibrous materials, wear, temperature, flows, and fluid characteristics that can make it extremely difficult to achieve and maintain optimal performance and efficiencies of heating ...


    By ProSonix LLC

  • New processes for the improvement of sludge digestion and sludge dewatering

    INTRODUCTIONThe examination of numerous sewage sludges from municipal wastewater treatment plants leads to the conclusion that on the one hand dewaterability of these sludges worsens and that on the other hand dewaterability of sludges becomes more and more important due to increasing disposal costs. Especially wastewater treatment plants with inflows from the food processing industry often face ...


    By Cambi Group AS

  • Heat recovery from wastewater

    Heat recovery from gray water is particularly important in water-intensive industries such as pulp and paper plants, dairies and breweries. Rather than flushing used water down the drain, consider whether a heat exchanging system can help you put that energy to work in your process again. Most plant operators arc aware of the need to save money and reduce the environmental impact of their plant ...


    By DDI Heat Exchangers Inc.

  • Viscous heating effect on deactivation of helminth eggs in ventilated improved pit sludge

    Viscous heating by extrusion of faecal material obtained from ventilated improved pit (VIP) latrines can be used to deactivate soil-transmitted helminth (STH) eggs by increasing the temperature of faecal sludge uniformly. Viscous heating can deactivate STH eggs present in sludge to make the material safer to transport, dispose of, or use in agricultural applications or as an energy source. The ...


    By IWA Publishing

  • Viscous heating effect on deactivation of helminth eggs in ventilated improved pit sludge

    Viscous heating by extrusion of faecal material obtained from ventilated improved pit (VIP) latrines can be used to deactivate soil-transmitted helminth (STH) eggs by increasing the temperature of faecal sludge uniformly. Viscous heating can deactivate STH eggs present in sludge to make the material safer to transport, dispose of, or use in agricultural applications or as an energy source. The ...


    By IWA Publishing

  • Low temperature microwave and conventional heating pre-treatments to improve sludge anaerobic biodegradability

    This paper presents the results of lab-scale experiments on low temperature thermal pre-treatment (less than 100 °C) prior to anaerobic digestion of sewage sludge. Two heating ways, microwave heating (MH) and conventional heating (CH), and two types of sludge, primary and waste activated sludge, were compared under the same experimental conditions. The degree of solubilisation produced by ...


    By IWA Publishing

  • Spilled heavy grade heating oil case study

    Heavy fuel oil escaped from a storage tank and entered the drainage system of a large creamery. This material passed to the aerated balance tank which precedes an activated sludge system treating the factory waste waters. Alerted to the spillage the operators were able to shut off the flow to the activated sludge system but not before a significant quantity of oil had passed through. Bio-Systems ...


    By Bio Systems Europe

  • Fate of organic matter during moderate heat treatment of sludge: kinetics of biopolymer and hydrolytic activity release and impact on sludge reduction by anaerobic digestion

    Temperature-phased anaerobic digestion with a 50–70 °C pre-treatment is widely proposed for sludge. Here, such a sludge pre-treatment (65 °C) was studied against the physical, enzymatic and biodegradation processes. The soluble and particulate fractions were analysed in terms of biochemical composition and hydrolytic enzymatic activities. Two kinetics of organic matter ...


    By IWA Publishing

  • Enhancement of anaerobic biohydrogen/methane production from cellulose using heat-treated activated sludge

    Anaerobic digestion is an effective technology to convert cellulosic wastes to methane and hydrogen. Heat-treatment is a well known method to inhibit hydrogen-consuming bacteria in using anaerobic mixed cultures for seeding. This study aims to investigate the effects of heat-treatment temperature and time on activated sludge for fermentative hydrogen production from α-cellulose by response ...


    By IWA Publishing

  • The Benefits Of Oil Sludge Recycling Pyrolysis Plant

    Oil sludge is actually a major byproduct of the oil production process. It is actually a combination of oil, solid sediment and water that could be highly polluting for the environment additionally it has high recycling value. Put simply, the oil sludge could be recycled to produce useful items that provide lots of value. The technology utilized for ...

  • Determining analytes in food, soil and sludge

    Customer: Institute of Sustainable Halophyte Utilization, Pakistan The Institute of Sustainable Halophyte Utilization, University of Karachi has been established as an elaborate facility for research of various halophytes to serve as a source of fodder, forage, biofuel, oil seeds, medicinal plants and other possible usages. Application: Determining analytes in food, soil ...


    By BÜCHI Labortechnik AG

  • In Situ Thermal Treatment for Soil, Sediment, and Sludge

    The main advantage of in situ thermal treatment is that it allows soil to be treated without being excavated and transported, resulting in significant cost savings. However, in situ treatment generally requires longer time periods, and there is less certainty about the uniformity of treatment because of the variability in soil and aquifer characteristics and because the efficacy of the process is ...

  • A Comprehensive Review Of The Sludge Treatment Process

    It is possible to take sludge and convert this into a biofuel. This is becoming more common every single day. Businesses that have these machines are able to produce a substantial amount of revenue as long as they have a constant supply of this material. If you have a solid waste plant where you are processing this material daily, you can use this to help you generate more ...

  • Land remediation & sludge processing case study

    In late 2009 the company was approached by a London based consultancy on behalf of their clients with oil and gas interests in an Eastern European country. The brief was to supply a technology that could assist in the clean-up of historical oil spills around redundant oil wells in a working oilfield. Our initial meeting led us to believe that this was a viable contract and following several ...

  • Removal of inorganics from sludge and digestate: the BiAR process

    This conference contribution will present a novel technology for renewable ash-free fuel production from low-value ash-containing feedstocks such as sludge digestate, wood bark or rice husks that cannot be utilized directly as a heating fuel, because of the high (low melting point) ash content. Biomass Ash Removal (BiAR) process introduces the low-temperature solvolysis in cheap solvents to ...


    By IWA Publishing

  • Analysis of methane emissions from digested sludge

    The energetic use of sewage sludge is an important step in the generation of electricity and heat within a wastewater treatment plant (WWTP). For a holistic approach, methane emissions derived from anaerobic treatment have to be considered. Measurements show that methane dissolved in digested sludge can be analyzed via the vacuum salting out degassing method. At different WWTPs, dissolved ...


    By IWA Publishing

  • Evaluation of the energetic potential of sewage sludge by characterization of its organic composition

    The composition of sewage sludge and, thus, its energetic potential is influenced by wastewater and wastewater treatment processes. Higher or lower heating values (HHV or LHV) are decisive factors for the incineration/gasification/pyrolysis of sewage sludge. The HHV is analyzed with a bomb calorimeter and converted to the LHV. It is also possible to calculate the heating value via chemical ...


    By IWA Publishing

  • Centralised treatment of oil sludge and other industrial waste

    Centralised treatment of various sources of industrial waste has been established in many European countries over the last decade. Many facilities are still equipped with non state of the art technology and therefore cannot fulfil the broad field of applications with regard to industrial waste remediation. econ's international client decided to be one step ahead and erected a new econ industries ...

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