This Algae pilot is the first of its kind in Sweden. The algae convert unwanted substances to utilities. The goal is that algae cultivation will reduce our emissions of carbon dioxide and purify waste water to minimize over-fertilization of our waters and at the same time produce an energy-rich algae mass that is raw material for biodiesel (algae with high fatty acid content), animal feed (protein-rich algae) etc.
Alsterbro Wastewater Treatment Plant
At Alsterbro sewage treatment plant, wastewater is purified in three steps. The first purification step consists of the mechanical removal of the coarse solids in the rotary screen. The next processing step is the biological treatment in biorotor. In the last purification step, chemical precipitation to remove phosphorous. The flocculant used is polyaluminiumhydroxiklorid.
Then, the treated water out of the Alsterån. Sludge from both the biological and chemical purification pumped into reed beds, where lush reeds contributes to the degradation of the sludge, among others. alia by reed plants favors oxygen supply down in the sludge.
Artificial wetlands in Trosa
Since 2003 the waste water from the town of Trosa (about 4500 citizens) has been treated in artificial wetlands, after the basic treatment in the sewage plant. Thanks to the wetlands the Trosa river and the town bay have been spared from eutrophicating substances (plant nutrients) as well as contagious substances (pathogenes). Besides the value of purifying the water, the wetlands are a popular recreation area. The wetlands are used for education and many study visits are made here. Vagnhärad, the neighbouring town with about 4500 citizens, has a similar area of artificial wetlands since 2001.
Bioendev – The Biocoal Company
Developer and supplier of high-tech systems for cost efficient pre-treatment of biomass for use in heat and power generation, conversion to liquid fuels and production of green chemicals. Based on over ten years of research, BioEndev has developed an innovative torrefaction technology for production of black pellets. With over 10 patents we have a unique technology with high process control and availability. Black pellets resembles fossile coal in many ways but is renewable and carbon neutral. Black pellets are hydrophobic and has up to 50% higher energy density compared to white pellets. Apart from offering Commercial Scale torrefation units together with our EPC partner, Bioendev offers long-term offtake-contracts of Black Pellets in our Industrial Demonstration Plant in Holmsund, Sweden, which has a capacity of 16 000 tons/year. We also offer test batches of Black Pellets for industrial trials as well as tests of different raw materials.
Biogas Xpose: sustainable biogas production through innovative technologies
BIOGAS XPOSE demonstrates how a region with a high demand for biomethane (BM) can increase the production of BM as a renewable vehicle fuel in an economically and environmentally viable fashion by maximizing regional waste as the resource. The project is reducing the total emissions of carbon dioxide with 334 600 tonnes by sustainable production of BM that replaces fossil fuels in the transportation sector. The project ended in 2018.
C/O City – Promoting urban ecosystem services in planning and construction
C/O City is an NGO committed to promoting ecosystem-based solutions to urban challenges. Our QGIS planning support tool highlights the differentiated benefits of green surfaces provide in the city. It can be used free-of-charge in city planning and evaluation of proposed land-use change.