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Published byChloe Thornton Modified over 9 years ago
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WORK PACKAGE 5 BIOLOGICAL TREATMENT
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PROCESSES / EQUIPMENTS C - Composting plant Tube – Tube (Dano type) AD - Anaerobic digestion plant (?) MWS – Mixed waste sppliting plant MT - Mechanical treatment PT - Post-treatment
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Composting (C) Biological process for the treatment of the biodegradable fraction of waste, based essentially on the action of an aerobic microbial population. The material should pass through a thermophilic phase, where there is a high release of CO 2, water and heat. In the end, the process should lead to the production of stabilised organic matter (compost).
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Anaerobic Digestion (AD) Biological process for the treatment of the biodegradable fraction of waste, based on the action of an anaerobic microbial population. Organic matter is stabilised and biogas, which contains high concentrations of CO 2 and CH 4, is produced. The AD process is usually followed by a C process for maturation purposes.
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Inputs - Mixed waste - Biowaste SC - Organic waste CP - Organic waste CO - Fraction for BT from MWS plants - Air * - Water - Supplies (Energy)
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Outputs - Compost - Digestate - Rejected materials - Off gas - (CO 2, CH 4, H 2 O, NH 3, NO x, H 2 S) - Leachate - Energy
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Destinies for Outputs 1. Compost (C)- Agriculture - Other uses (final landfill cover, landscape restoration in old and disused quarries and mines, anti-noise barriers, road construction, golf courses, ski slopes, football pitches) - Landfilling - Incineration (?)
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2. Digestate (AD)- Agriculture - Composting 3. Rejected materials- Recycling - Landfilling - Incineration
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4. Off gas: C- Biofilters environment AD- Burnt (energy recovery or not) environment 5. Leachate (C)- WWTP environment - Recirculated 6. Energy (AD)- TIBS
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CASE STUDIES 1. INPUT MATERIALS - MSW - Biowaste - Green waste (?) 2. COMPOSTING PLANTS - Koch - Siloda 3. TUBE - BRS
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4. ANAEROBIC DIGESTION PLANT ??? 5. MECHANICAL TREATMENT/ WASTE SPLITTING - Trommel - Overband - Selector conveyor (after tube) 6. POST TREATMENT - Trommel - Selector conveyor - Densimetric table
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CASE STUDIES CONFIGURATION
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OR
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MEASUREMENTS AND ANALYSES TO BE CARRIED OUT 1. Dry Modecom Procedure 2. Measurements in situ (composting park) - temperature - O 2, CO 2 and CH 4
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3. Composting material and final compost - moisture - volatile solids (organic matter) - inerts - heavy metals - synthetic and non-synthetic organic matter - total N - SOUR
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4. Final compost - self-heating test - phytotoxicity assay (germination test) - Salmonella, E.coli - P, K, Ca, Mg, Na, Cl, pH, electrical conductivity, humic compounds
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CASE STUDY ALREADY PERFORMED Tratolixo Plant
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TRATOLIXO
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WET MATTER BALANCE - FLUXES
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WET MATTER BALANCE - COEFFICIENTS
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WET MATTER BALANCE - SUMMARY (values relative to total input of MSW)
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ORGANIC NON SYNTHETIC MATTER BALANCE - FLUXES
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ORGANIC NON SYNTHETIC MATTER BALANCE - COEFFICIENTS
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NON SYNTHETIC ORGANIC MATTER BALANCE - SUMMARY
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NEXT 6 MONTHS 1. Biowaste composting plant 2. Measurements for the Tratolixo composting park - in situ: temperature, oxygen, carbon dioxide - SOUR 3. Study of individual equipments for MSW / MT and PT (3)
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