ST e la Sostenibilità Ambientale

Transcript

1 ST e la Sostenibilità Ambientale

2 ST environmental mission Manage our operations with a rigorous approach to reducing our impact on the environment, following our EHS Decalogue objectives, and with a particular emphasis on low-environmental impact of our activities and CO2 neutrality. 2

3 Waste reduction: -5% every year recycling: >90% Water, Energy, Chemicals reduction: -5% every year of consumption/wafer out Green house gases: reduction of all direct and indirect emissions Waste water: reduction of main contaminants (fluoride, eutrophication) on wafer out Air emission: reduction of acidification and VOC on wafer out Presentation Title 28/04/2015

4 IMPATTO AMBIENTALE CARTA RUMORE EMISSIONI (vengono principalmente emessi acidi, basi, gas pericolosi, solventi) CHIMICI e GAS PRODOTTO ENERGIA ELETTRICA ACQUA MOBILITA SCARICHI RIFIUTI (vengono riciclati, riutilizzati come fonte di energia e in minima parte inviati in discarica,) IDRICI

5 UNI EN ISO Clean Room: area in grado di minimizzare l introduzione, la generazione e la ritenzione di particelle. Massime concentrazioni particellari ammesse per m 3 di aria alle dimensioni critiche Classe 0.1 µm 0.2 µm 0.3 µm 0.5 µm 1µm 5 µm Clean Rooms ISO ISO N A S A ISO ST-R2: 7,100 m 2 ISO ST-AG8:12,000 m 2 ISO ISO ST-EWS: 6,800 m 2 ISO Sala Operatoria ISO Uffici ST ISO Dimensioni di un capello umano µm Polvere nociva ai polmoni 0,3-4 µm

6 PUREZZA DELL ACQUA PER LA MICROELETTRONICA CATIONI (Na +, Ca ++, Mg ++, ) < 5 µg/m 3 cercare 4 µg di cationi in un metro cubo di acqua? come trovare una palla da bowling nel Lago di Como! 22,500,000,000 m 3 Lago di Como 22,500,000,000 m 3

7 Energy program

8 Energy management Reducing energy consumption and carbon footprint from operations energy efficiency and conservation programs purchase of green energy (renewable energy > solar energy, wind turbines )

9 Environmentally friendly processes Energy saving System to continually clean the tubes of the heat exchangers used in producing cooled water Small sponge-rubber balls with a diameter slightly larger than that of the tubes are forced through the tubes by the water flow, removing deposits Impact: optimized heat exchange Savings: 6 to 15 GWh/year Economical impact: $500k to $1M/year

10 Environmentally friendly processes Energy saving The compressed air system accounts for around 30% of electricity consumption. Identifying and eliminating air leakages resulted in a total gain of 1500m 3 /hr in airflow. This allowed a 3600 m 3 /hr compressor to be replaced by a smaller 2100 m 3 /hr machine Savings: 1300MWH/year, or 130 K$/year. Sustainable Excellence at ST

11 Environmentally friendly processes Water saving Radiator (air-cooled heat exchanger) installed on the cooling water circuit in series with the existing cooling towers. The radiator removes part of the heat load during the hot season and removes all heat in the cold season. In winter all the cooling towers can be switched off. Reduced electricity consumption Water Recycling Ratio increased to 80%, saving $12,500/year in water supply

12 Water saving program

13 Water global context

14 California water scarsity Sustainable Development - A.Denielle 16-Oct-13

15 World Water day 22/03/2015 Marzo 2015 Acqua, Istat: Bolletta su del 74% in 5 anni. Si spende più che per minerale DALLA GIORNATA MONDIALE DELL ACQUA 22 MARZO miliardo e mezzo di persone non ha accesso a acqua potabile 2,5 miliardi di persone non hanno accesso a servizi igienico sanitari Ogni 20 secondi un bambino muore per mancanza d acqua pulita Il 40% del raccolto di grano dipende da depositi fossili d acqua, che si stanno esaurendo

16 Water management Reducing water use and ensuring high standards of effluent and waste water treatment

17 Metodologia.il processo di miglioramento continuo Ridurre Obiettivi Misurabili 3 R Verifica Risultati Riciclare Riutilizzare Uso Migliori Pratiche

18 IMPACT ON LOCAL CONTEXT m3 x1000 Raw water consumptions ST water saved: -1,200,000 m3/year Agrate & Caponago (20,000 people) consumption: 1,270,000 m3/year CAPONAGO 0 AGRATE ST

19 ZERO DEEP WATER 19 - Shallow aquifer is impacted from organic compounds and shallow groundwater has to be treated by cities in order to reach drinking water quality - Deep groundwater has drinking quality and is ready to be supplied to population; deep aquifer is also very good to produce electronic grade UPW - ST site surrounding cities can use only deep groundwater wells to extract drinking water WELL ground SHALLOW AQUIFER clay DEEP AQUIFER To make reclaim a stable process and improving UPW plants pretreatment allowed to cut deep water withdrawals. 21% % SHALLOW DEEP % 96%

20 CICLO DELL ACQUA IN ST - AGRATE 20 AGRATE CAPONAGO WATER WELLS UPW PLANT MANUFACTURING RECYCLING WASTE WATER TREATMENT SCRUBBERS COOLING TOWERS MUNICIPAL TREATMENT CIVIL USAGE MOLGORA RIVER

21 RECICLO: TORRI EVAPORATIVE E SCRUBBERS 21 TORRE EVAPORATIVA SCRUBBER

22 Waste Management

23 Waste management Reducing, re-using, recycling and managing waste streams (hazardous substances, metals, packing, plastics and other non-biodegradable materials).

24 GRAZIE