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Method and arrangement for purifying water drawn from a ground-water well

Yrjo Johannes Reijonen, +1 more
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TLDR
In this paper, the authors present a method for removing the ironside from a ground-water well by inserting OXYGEN or an OXYgen-releasing substance.
Abstract: 
THE PRESENT INVENTION CONCERNS A METHOD FOR PURIFYING WATER DRAWN FROM A GROUND-WATER WELL, MOST SUITABLY FROM A DEEP WELL, FROM IRON BY INTRODUCING IN THE WATER OXYGEN OR AN OXYGEN-RELEASING SUBSTANCE AND BY FILTERING TO REMOVE THE IRON OXIDE WHICH IS PRECIPITATED. THE METHOD IS CHARACTERIZED IN THAT INTO THE GROUND WATER-CARRYING SOIL LAYER SURROUNDING THE WELL FEED WATER IS FED WHICH CONTAINS OXYGEN OR AN OXYGEN-RELEASING SUBSTANCE.

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Portable method for decontaminating earth

James L. Kirk, +1 more
TL;DR: In this paper, vertical and/or horizontal perforated pipes are embedded in the soil around an area of the earth which has been contaminated by a spill and these pipes are connected in a closed portable system with a pressure pump in series with an evacuator having a separator and scrubber.
Patent

Process for chemical decontamination of layers of earth and/or water contaminated with organic materials

Ernst Forte, +1 more
TL;DR: In this article, an apparatus for the chemical decontamination of layers of earth and/or water contaminated with organic materials comprising the following block units: Device for withdrawal of water from a water pressure line which water is to be treated and returned into the layers of the earth, mixing device for the preparation of a mixture of water and at least one strong, chemical oxidizing agent and or bactericide, degassing device for removal of excess gas from the mixture, a distribution device for distributing the mixture to several feed lines, and several mobile sprinkling or feeding lines with drain pipes
Patent

In-situ deep remediation injection system and method

Jerry D. Nickell, +1 more
TL;DR: In this article, the authors proposed a deep remediation injection system for in-situ remediation of contaminated soil and ground water capable of progressive penetration both vertically and horizontally in contaminated soil, having a soil penetrating lance for injecting air and oxygen and liquid with suspended biologicals into the contaminated soil.
Patent

Method of treating well servicing fluids

Roy K Darlington, +2 more
TL;DR: In this paper, a method for removing heavy metals from brines used as well servicing fluids in which the heavy metal is oxidized to a higher, stable oxidation state of +3 or greater, the oxide or variants thereof of the oxidized metal is formed resulting in a generally water insoluble precipitate which is then removed by filtration leaving the brine free of deleterious amounts of heavy metal.
Patent

In-well air stripping and adsorption

Suthan S. Suthersan
TL;DR: In this paper, a method and system for removing contaminants from the phreatic zone, also known as the saturation zone, or groundwater, was proposed, which is comprised of a means for supplying gas to the lower extent of a well which induces a flow of groundwater and gas bubbles up the well.