Recently, the performance testing of the Jieyang Green Fuel China plant has been completed successfully. During the 21-day performance testing period, plant availability, throughput, input and output moisture, heating value, machinery sorting efficiency and odor treatment efficiency has individually been tested. Every test has received solid and satisfying testing results. The Jieyang plant converts 401.500 t/a Municipal Solid Waste (MSW) into Refuse Derived Fuel (RDF) with high calorific value and recyclables (FE and non-FE metals, PVC, etc.) WTT as the main contractor of this turn-key MBT project, is responsible for designing, engineering, constructing, commissioning and start-up of two biological treatment lines with 20 bio-drying boxes automatically filled and emptied by 2 overhead cranes, two mechanical sorting lines and a complete odour abatement system. Check out the video below for an overview of the facility. A unique installation As one of the few Mechanical Biological Treatment (MBT) facilities in China, the Jieyang Green [...]
Get to know Jeroen What I do I am responsible for the electro engineering part of an organic waste treatment facility. My work is during the sales phase, the project phase and I am part of the after care. It is my role to think of a smart solution for the problems our customers have. When a project starts, we think about purchasing the right equipment. What do we need and how does it fit the demand of the customers. Communication with the customer is important in this phase. And, when a project is finished, I am part of the aftercare. If there is a problem, I am consulted to find a solution. Some of the work involves standard components, but we also need to fit our drawings and equipment to local regulations. In Canada they have not the same voltage and certification, in Australia the coloring of the wiring is different [...]
Get to know Elian What do you do? I am a process engineer. I describe it as executing the design on the main lines for an installation and making sure that it ultimately works. I make schematic representations of the facility, so for example Piping & Instrumentation Diagrams (PI&Ds). In addition, I am involved in equipment selection, calculating heat exchange, pump flows, basically the whole technical part for each new waste processing plant. I spend a lot of time at the computer, occasionally visiting a site. When I go to the site, it is for a commissioning, or to help with troubleshooting. For example, if a pump keeps breaking down, or keeps going outside its curve, we do the problem analysis. How did it start? I started working for WTT 3 years ago, just after I graduated as a mechanical engineer. The main reason why I chose this job is that I wanted [...]
Biogas is an environmentally-friendly, renewable energy source. Biogas is not to be confused with ‘natural’ gas, which is a non-renewable source of power. Biogas is produced when organic matter, such as food or garden waste is broken down by microorganisms in the absence of oxygen, in a process called anaerobic digestion. For this to take place, the waste material needs to be enclosed in an environment where there is no oxygen. Biogas is not a new discovery. The bacteria that break down organic material into biogas are some of the oldest multi-celled organisms on the planet. The anaerobic process of decomposition (or fermentation) of organic matter has been happening in nature for millions of years, even before fossil fuels, and continues to happen all around us in the natural world. Today’s industrial conversion of organic waste into energy in biogas plants is simply fast-forwarding nature’s ability to recycle its useful resources. The first [...]
The upgrades, using WTT technology, at the facility in Duke Point at Vancouver Island, in the regional District of Nanaimo have reduced the composting times from six to eight months to only 15 days. During the re-opening event on Monday 29th of August, Convertus Group CEO Mike Leopold said new-tech in-vessel composting allows them to process much more organics, produce a great soil and help reduce greenhouse gas emissions. The facility is critical in allowing to meet the 90 per cent diversion goal from landfill, and the City’s committed to eliminate all organic waste from landfill by 2030. Sean Kawakami, business development manager for Convertus Group said the site was capable of processing 20,000 tonnes of organics per year, however, with the addition of four tunnels, they were able to nearly triple the processing up to 58,000 tonnes. This makes it the largest processing site by weight of organics on Vancouver Island. [...]
How does AD work? Anaerobic digestion is a process through which bacteria break down organic matter in the absence of oxygen. In this instance, “organic” means coming from or made of plants or animals. Anaerobic digestion happens in closed spaces. It can also occur in nature or e.g., landfills, but in AD facilities it is optimized, controlled and the biogas that is produced can be contained. The anaerobic digestion is aided by microorganisms, involving a series of steps such as hydrolysis, acidogenesis and methanogenesis. There are different types of digestion plants: Wet system, the biomass is turned into a soup, it is digested in a stirred tank reactor, this is a continuous system Semi-dry system, the biomass is like a sludge, it is digested in a plug-flow reactor, this is a continuous system Dry system, biomass is solid, digested in a tunnel without diluting, this is a discontinuous system, or a batch [...]
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