Rijnstate now wants to go a step further. "Using the list of bio-based materials from Wageningen UR we will try a much bigger part of our hospital to ferment," says Koster. The list includes not only the known disposable coffee cups but also all kinds of sputumbakjes, syringes, linens, hats, shoes and gowns.
The consideration to deal with digestion and a transformation towards biobased to work, coincides with an expansion of hospital capacity and strategic plan. Rijnstate Hospital wishes to combine plans with an ambitious reduction of the ecological footprint and thus reduce the annual 600 thousand kilograms of waste, achieving a reduction in CO2 emissions and reduce its water consumption.
At Wageningen UR Food & Biobased Research researcher Martien van den Oever makes clear that not only the PHA bioplastic is eligible for fermentation. 'Pads, textiles and mountain tissues used by hospitals, are unlikely in the future with little effort be mistaken,' thinks Van den Oever. It has been calculated that 160 thousand kilograms of material which is at least partially in Rijnstate handles fermentable or of a fermentable equivalent can be made. "It provides an amount of biogas equivalent to 70 thousand liters of diesel or 2.6 TeraJoule, which is over 700 thousand kWh of power."
Rijnstate Hospital has a laundry list of hospital items can now be made from fermentable bio-based materials.
The waste can be directly on the ward vershredderd, after which it enters a fermentation unit via the sewer. The innovation provides energy, produces less waste and improves hygiene and logistics. It is partly a result following a feasibility study by Wageningen University.
The bedpo is probably the most famous hospital product. Nurses need to bring the gleaming steel pots for a washing machine where they are cleaned. Lots of work, lots of energy, lots of washing water and detergent is the result. As far as Marc Koster of Rijnstate of property department, it is different from 2017. "We think we can grind with 51 shredders in various places in the hospital disposables and they ferment at a central point for biogas," says Koster.
There is not only served with the environment. Koster says an outright business case. "From day one we're going to make the investment, there is a positive net present value. After eleven years we have recouped the entire investment, "says Koster. The inspiration for the fermentation process of the Reinier de Graaf Hospital in Delft. That hospital already embraced in 2010 the concept of the company Pharmafilter. In Delft grinds the shredder now for several years as department waste meal leftovers, bedpo's blood bags and dishes.
Dishes, bedding and gowns fermentation
"Tonto" is the shredding of Pharmafilter baptized, Spanish for "a dwaas'. The crushed products are to be separated a central unit where solid particles and water. The organic share going to the digester, indigestible parts and conventional plastic comes in a sludge fraction and the aqueous fraction is treated in a membrane bioreactor, activated carbon and ozone after making short work of drug residues.
30-06-2015 09:01 | By: Laura French | 0 comments
On August 31, the Reinier de Graaf Hospital in Delft occupies a new building in use. A new Pharmafilter ensures sustainable waste treatment plant.
The new Tonto-grinder 3 is quieter, better insulated, energy efficient and prevents clogging. Combined with a new treatment process millers from August 31, 2015 the entire construction waste. According manager Facility Services Robbert Jan van der Ent Braat, the replacement at a good time. The current Pharmafilter plant was originally a test installation and only works for nearby building.
The test installation on the site of the Reinier de Graaf Hospital to invest several hospitals inspired a Pharmafilter. According to van der Ent Braat the commissioning of the new system will have the same effect. "These new and advanced Pharma Filter and Tonto will soon attract a lot of interest," says van der Ent Braat in a press release. "Reinier de Graaf and Pharmafilter are positively condemned to each other. Here in Delft, this revolutionary system, after all started. "
Reinier de Graaf Hospital took in 2012 as the first hospital worldwide Pharmafilter in use. Using the sustainable waste management system, the hospital reduces the amount of dirt and transports CO2 emissions. In addition, the system provides clean water, electricity and heat back to the hospital.
The cost of the new Tonto amount #$%$ 16,500. The maintenance contract with Pharmafilter costs #$%$ 995 per year per grinder.