Apparatus for creating, in an aquifer, an oxidation and precipitation zone or a reduction zone between a number of injection wells arranged around one or more extraction wells for purified water
CN1208720A
Device for creation of oxidation and pptn. zone or reduction zone in aquifer
HRP970447A2
A device for the creation of an oxidation and precipitation zone or a reduction zone in an aquifier
EP0885171A1
A device for creation of an oxidation and precipitation zone or a reduction zone in an aquifer
HRP931274B1
A process for decreasing the nitrate content in water
SE8800212D0
Cleansing water contg. nitrogen cpds. - involves feeding water into ground water to flows through oxidn. zone and then through
IL83788D0
Purification of wastewater containing nitrate and/or nitrite
CA1255817A
Process for decreasing the nitrate content in water
AU2968384A
A process for the purification of water
HUT38285A
Method for purifying water
YU77284A
Waste water treatment
NL8020157A
Method for precipitating heavy metals from waste water.
FI800595A
Anordination for tillvaratagande av vaermeenergi fraon jord vattendrag och grundvatten
CA1098062A
Process for the recovery of organic gases from ground, bedrock or bottom sediments in lakes
US4187148A
Procedure for separating and recovering marsh gas
ES440756A1
Method and device for purifying water drained from a underground water well. (Machine-translation by Google Translate, not legally binding)
CA1071871A
Method for the continuous separation and recovery of marsh gas from bog mud
CH590791A5
Water purification to remove iron in filter bed - with oxygen-contg. water passed intermittently through part of bed
DK141932B
Method and apparatus for removing iron from water to be transported from a groundwater well.
