ENVIRONMENTAL
SECTOR
VOMM Turbo Technology is applied in the following environmental processes:
DRYING
The VOMM Turbo Dryer plant is able to dry sludges from waste water plants and wastes with different characteristics.
Here are some examples:
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MUNICIPAL SLUDGES (digested or undigested)
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INDUSTRIAL SLUDGES (tanneries, galvanic industry, paper mills, etc...)
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REFINERY SLUDGES
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ORGANIC FRACTION OF MUNICIPAL SOLID WASTE
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DIGESTATES AND FERMENTATION BYPRODUCTS
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SLOUGHTERHOUSE BYPRODUCTS
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FOOD INDUSTRY AND LIVESTOCK FARMING BYPRODUCTS
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BIOMASSES (olive pomace and grape marc, etc.)
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REFUSE-DERIVED FUEL (RDF/SRF)
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COARSE SCREENED MATERIALS/WASTE FROM MSW SELECTION CHAINS
The product obtained is:
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stable,
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hygienically safe,
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almost odourless,
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easy to transport and handle
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pelleted (where required)
End product characteristics
Reuse of the end product
The properties of the dried product make this process particularly suitable for the treatment of sludges or other organic sludges for energy production (waste to energy plants, co-firing in cement production plants, plants for energy production from biomass, etc.) or for use in farming.
VOMM Turbo Dryer is the drying plant designed and built by our company.
CONCENTRATION
The VOMM Turbo Concentrator plant is able to concentrate any water or solvent solution, such as:
- SOAPSTOCKS
- OILY SLUDGES OR WASTEWATER FROM REFINERIES
- DRILLING MUDS
- LIQUID FRACTION OF DIGESTATES
- RAW LIVESTOCK FARM MANURE
- LEACHATE
- GALVANIC PROCESS WASTEWATERS
Reuse of the end product
The end product is a significantly smaller volume of a high-viscosity liquid or a semi-solid, which may be reduced to a solid in a second processing stage, at the best convenience.
POLLUTED SOIL DECONTAMINATION
VOMM has developed and patented a specific Turbo Technology application for extracting volatile substances from polluted soils.
Some of the products which can be treated in VOMM Turbo Desorber decontamination plants are:
• SOILS POLLUTED WITH HYDROCARBONS
• SOILS POLLUTED WITH SOLVENTS
• SOILS POLLUTED WITH DIOXINS/PCBs
The VOMM Turbo Desorber plant can be installed off-site or on the site itself, to reduce the costs of handling and transporting the polluted soils.
HOSPITAL WASTE STERILISATION
The sterilization plant, models VOMM HTS 500/1000/1500, allows the treatment of hazardous infectious medical waste, packaged both in disposable and reusable containers, using processes that include, in addition to sterilization, also shredding and drying. The construction of the plant is realized in compliance with the requirements of Italian standards and laws that implement the European standards concerning such waste (UNI 10384/94, part one, referred to by Presidential Decree 254/2003 "Regulation containing the discipline for the management of medical waste".
In particular, the VOMM HTS continuous sterilization process is divided into the following phases:
• entry of hospital waste containers into the hopper of the shredder mill;
• shredding of the waste to a uniform size of 3-4 cm;
• confined transfer of shredded waste via compartmentalised conveyors to the sterilization unit;
• sterilization and drying of shredded waste in the relevant unit;
• discharge of sterilized and dried waste through an appropriate system;
• exit of the treated waste from the process.
The main peculiarities of the proposed plant are the following:
• small dimensions of the plant;
• hopper that serves the shredder is in constant depression;
• air sucked in from the shredding section is filtered with specific filters;
• the whole process is compartmentalized and confined;
• recirculation of process gases;
• sterilization process is obtained both by convection and by conduction;
• operating temperatures are maintained between 151°C and 180°C;
• immediate exposure of the waste to the maximum temperature of the process;
• temperature of the sterilization process is constantly monitored;
• continuous sterilization cycle (without heating and cooling of the waste) allows minimum energy consumption;
• condensation system for water evaporated from waste;
• continuous discharge of sterilized waste;
• sterilized waste is perfectly dry (about 92% of dry substance);
• weight reduction;
• high calorific value;
• classification as SRF.
Product characteristics of sterilized waste.
The sterilized waste is transformed into a dry material of fine size, homogeneous from a physical, chemical and biological point of view, stable and not emitting odors or vapors.
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there are no recognizable parts;
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the glass is completely pulverized;
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metal materials are reduced to small and not sharp pieces with a size of a few millimeters;
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the material is dry and smooth.
The characteristics of sterilized waste are in line with the UNI 9903-1 standard concerning non-mineral solid fuels derived from waste, with a volume 3 to 5 times lower than the initial volume and a practically zero moisture content. This means an average weight reduction of 30% (that corresponds to the average moisture content of the initial waste).
As a result of dehydration, sterilized waste has a high calorific value, approximately 22,000 kJ/kg, that is higher than the minimum required by UNI 9903-1 of 15,000 kJ/kg, which therefore gives it class 2 (in accordance with UNI EN 15359) thanks also to its composition of cellulose and plastic of essentially polyolefin nature.
Due to its composition, the sterilized material is normally delivered to facilities authorized for use as RDF (Refuse Derived Fuel).
Chemical-physical characteristics of sterilized waste
Based on analysis conducted at our plants, we can say that sterilized waste, identified with CER 19.12.10, can be classified as "Solid Recovered Fuel (SRF)" pursuant to the Italian Decree of 14 February 2013, n.22.
Download here the complete presentation "HOSPITAL WASTE STERILISATION"
SANITISATION AND STABILISATION
The products with high microbial load (including pathogen microorganisms) which can be treated in VOMM Turbo Dryer sanitisation and stabilisation plants are:
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CIVIL AND INDUSTRIAL SLUDGES
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ORGANIC FRACTION OF MUNICIPAL WASTE
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DIGESTATES
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FOOD INDUSTRY BYPRODUCTS
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LIVESTOCK FARM MANURE
End product characteristics
As a result of the multiple thermal shocks it undergoes, the end product is:
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Highly sanitised,
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Stabilised over time,
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Compliant with the US-EPA (Class A) regulations if requested by the customer
Reuse of the end product
It can be reused in farming, both directly applied to the land and as a co-structuring agent in compost.
THERMAL VALORISATION
VOMM's experience also includes the thermal valorisation of civil and industrial sludges and biomasses.
The products which can be treated in VOMM Turbo Energy thermal valorisation plants are:
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CIVIL AND INDUSTRIAL SLUDGES
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REFUSE-DERIVED FUEL (RDF/SRF)
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VEGETABLE BIOMASSES
- ANIMAL BIOMASSES (chicken and other manures, etc.)
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DIGESTATES
Characteristics of the VOMM Turbo Energy solution:
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Well tried and tested, highly flexible moving grate technology solution allowing combustion to be optimised with a wide range of products
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The drying section is thermally self-supporting with no need to use fossil fuels
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Drastic reduction of incoming waste volumes (up to ten times)
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Production of electricity and heat.
At the San Giuliano Milanese Ovest WWTP, managed by the CAP Group, the first grid waste-to-energy plant in Italy dedicated to the mono-incineration of dried sewage sludge is installed.
The plant was created as part of the experimental project PerFORM WATER 2030 and was built by VOMM Impianti e Processi S.p.A. on its own design and construction.
COOKING
The VOMM Turbo Cooker is a continuous cooking reactor for organic matrices, which favours thermal lysis.
Characteristics
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Increases anaerobic digester productivity
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Improves biomass characteristics
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Heats the substrate, making it suitable for subsequent digestion
STRIPPING
The VOMM Turbo Stripper plant is a continuous reactor which heats the mass continually stirred inside the machine to separate recyclable or undesirable chemicals (NH3, H2S, VOC) in vapour streams.
Characteristics
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Uniformly heats the organic matrix
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Removes chemical elements
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Improves the characteristics of the wastewater sent for treatment
GEOTHEIS
GEOTHEIS, GEO Thermal High Efficiency Integrated System, is the name of a family of VOMM machines including the VOMM Turbo Dryer, VOMM Turbo Cooker and VOMM Turbo Stripper plants, intended for treating different types of products, including:
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ORGANIC MATRICES (digestates from the organic fraction of municipal solid waste or OFMSW, and food processing industry, agribusiness and livestock farming waste)
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BIOLOGICAL SLUDGES (civil, industrial and food industry sludges)
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MUNICIPAL WASTE (coarse and fine materials from screening processes, RDF/SRF)
GEOTHEIS: Solution characteristics
The common denominator of all GEOTHEIS machines is the recovery of material and energy from the various matrices treated, as part of a circular economy approach.
GEOTHEIS: Reuse of the end product
Thanks to these machines' outstanding flexibility, the end product obtained may have various reuses: farming, composting, fuel, etc.
ANAEROBIC DIGESTION
Anaerobic digestion is a process which completes the range of equipment designed and built by VOMM, used to treat the organic fraction of municipal solid waste (OFMSW).
Characteristic
1. Wet process
Using the flexibility of the Wet System and its experience in thermal treatment processes, during the last three years VOMM has developed an Advanced Wet System.
Operating Principle
The process comprises a stripping system which removes the ammonium nitrogen, optimising recycling of the liquid digestate and the effluent treatment line, and a second heat treatment to dry the solid fraction of the digestate.
The typical layout involves the production of biomethane from the biogas produced, alongside the self-generation of the electricity necessary for the plant's operation using a cogenerator supplied with mains natural gas. The thermal energy required by the thermal systems is largely obtained by recycling the heat from the flue gases and the cogenerator cooling water circuit.
Main benefits
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significant reduction or complete elimination of the area required for composting
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production of a material easily sold as fertiliser
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simplification of the wastewater treatment system thanks to the substantial reduction of the ammonium nitrogen in the liquid fraction
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recycling of the treated water to the process, with consequent drastic reduction of the water intake
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significant reduction in the areas required for the entire anaerobic process
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the use of the waste heat available in the plant
VOMM's offering
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supply
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supply and subsequent operation and maintenance
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supply and funding of the project (total or partial)