Within urban stormwater management, long based on the principle of draining water as fast as possible from cites, new solutions are now being suggested. These new solutions not only protect against flooding, but also have other purposes such as pollution control and creation of recreational areas. In this paper several structural management practices (BMPs) are […]
Författare LARS BENGTSSON, PETER STAHRE och EDGAR VILLARREAL
Nyckelord (Keyword) Urban stormwarer, open system. BMP, green roof, detention pond
The Örby field is located right south of the city Helsingborg in southern Sweden. This field contains inter alia a water recharge activity and housing areas. Municipalities, like Helsingborg, are responsible for ensuring a balance both in the supply of water as well as dwellings. On the Örby field this leads to a conflict of […]
Författare ROBIN GRAMSTAD
Nyckelord (Keyword) artificial recharge, CLD, water supply, dwelling supply, group modeling, Helsingborg. Local housing, Master plan, municipal planning, sustainability, systems approach, water supply, Örby field.
Hard drinking waters give problems in several respects. The copper content can be > 2 mg/l after stagnation. The use of detergent is increased and discouloration can occur. Uppsala water work has developed a process to decrease the alkalinity and hardness of the water in a way that does not use special chemicals. The process […]
Författare ROLF SUNDBERG
Nyckelord (Keyword) Drinking water, copper, NOM (natural organic matter), binding, water treatment.
Hydroponic wastewater treatment takes advantage of the nutrient removing capacity of green plants. In addition to the nutrient assimilation, the roots provide a growth substrate for microorganisms involved in the biological treatment processes. However, to maintain year-round performance by the plants, additional energy muse be provided at higher latitudes, even if the hydroponics are situated […]
Författare KARIN LARSDOTTER, ANNA NORSTRÖM and GUNNEL DALHAMMAR
The purpose of ground water aeration is mainly to remove un-wanted gases and impurities as well as improve the oxidation of iron and manganese. In the field tests, the ejector aeration was compared with an INKA- aerator, a membrane-aerator, a droplet-aerator and a cascade-aerator. The different aerators performance as oxygen transfer efficiency [%], aeration efficiency […]
Författare JAAN KIVILOOG, ROBIN FJÄLL och KENNETH M PERSSON
Nyckelord (Keyword) ejector aerator, oxygene transfer efficiency, oxidation.
As a part of the environmental programme for Hammarby Sjöstad, a separate system for blackwater and organic household waste has been considered. Four different systems have been compared using a system analysis approach. Design issues considered were source separation of urine, use of vacuum toilers, and advanced nutrient recovery processes such as Reverse Osmosis (RO). […]
Författare DANIEL HELLSTRÖM, ERIK KÄRRMAN, BIRGITTA RYDHAGEN och OLA PALM
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