Solvent blend processes and products. A solvent blend particularly adapted for use in a solvent extraction process for decontaminating drill cutting waste containing drilling fluid base oil, or soil containing hydrocarbon liquids within the soil matrix is described where the solvent blend is recovered from, and contains extracted contaminants from, a solvent extraction and solvent and solute recovery process, and the solvent blend, when re-used in a solvent extraction process, demonstrates improved selectivity for dissolving solutes as compared to a non-contaminant containing solvent. The recovered, decontaminated solids are also described.

A sediment treatment system for desorption of contaminants and treatment of contaminated sediments, the system comprising a sediment inlet system, a sediment/slurry tank, wherein an outlet of the sediment inlet system feeds into an inlet of the sediment/slurry tank, a water make-up tank, wherein an outlet of the water make-up tank is connected to the inlet of the sediment/slurry tank, a mixing tank/reaction vessel, wherein an outlet of the sediment/slurry tank is connected to an inlet of the mixing tank/reaction vessel, a catalyst storage tank comprising a catalyst and, optionally, a chelator, wherein an outlet of the catalyst storage tank is connected to the inlet of the mixing tank/reaction vessel, and an oxidant agent storage tank comprising an oxidant agent, wherein an outlet of the oxidant agent storage tank is connected to the inlet of the mixing tank/reaction vessel is disclosed. A method for treatment of contaminated sediments is also disclosed.

A sediment treatment system for desorption of contaminants and treatment of contaminated sediments, the system comprising a sediment inlet system, a sediment/slurry tank, wherein an outlet of the sediment inlet system feeds into an inlet of the sediment/slurry tank, a water make-up tank, wherein an outlet of the water make-up tank is connected to the inlet of the sediment/slurry tank, a mixing tank/reaction vessel, wherein an outlet of the sediment/slurry tank is connected to an inlet of the mixing tank/reaction vessel, a catalyst storage tank comprising a catalyst and, optionally, a chelator, wherein an outlet of the catalyst storage tank is connected to the inlet of the mixing tank/reaction vessel, and an oxidant agent storage tank comprising an oxidant agent, wherein an outlet of the oxidant agent storage tank is connected to the inlet of the mixing tank/reaction vessel is disclosed. A method for treatment of contaminated sediments is also disclosed.

An injection tip assembly 10 and methods for use more reliably provide for delivery of fluid substances, such as materials that promote removal, destruction, or isolation of contaminants, into targeted zones within soil or bedrock. The injection tip assembly permits the application of pressurized fluid 163 so as to erode or cut a desired cavity or eroded volume 164 within the subsurface 14, allows for timely observation, adjustment, and control of pressure within the cavity, and directs the delivery of a second substance or fluid that may incorporate desired materials. The consequence of managed erosion and pressure control is to nucleate and propagate a hydraulic fracture of desirable form that optimally delivers remedial agents throughout the targeted formation.

An injection tip assembly 10 and methods for use more reliably provide for delivery of fluid substances, such as materials that promote removal, destruction, or isolation of contaminants, into targeted zones within soil or bedrock. The injection tip assembly permits the application of pressurized fluid 163 so as to erode or cut a desired cavity or eroded volume 164 within the subsurface 14, allows for timely observation, adjustment, and control of pressure within the cavity, and directs the delivery of a second substance or fluid that may incorporate desired materials. The consequence of managed erosion and pressure control is to nucleate and propagate a hydraulic fracture of desirable form that optimally delivers remedial agents throughout the targeted formation.

A sorting station is provided with a hopper, at least one conveyor belt, a deck screener, including at least one mesh screen and at least one spray bar, a chute, having a tapering form, a prep screw, a dewatering screen, wherein the deck screener is configured to have vibration applied thereto to separate a matter from a mixture of matters, and where the at least one spray bar is configured to wash the mixture of matter and further separate a selected matter from the mixture of matters. Methods of sorting a particular matter from a mixture of matters, and processes of filtering soil are also provided.

A sorting station is provided with a hopper, at least one conveyor belt, a deck screener, including at least one mesh screen and at least one spray bar, a chute, having a tapering form, a prep screw, a dewatering screen, wherein the deck screener is configured to have vibration applied thereto to separate a matter from a mixture of matters, and where the at least one spray bar is configured to wash the mixture of matter and further separate a selected matter from the mixture of matters. Methods of sorting a particular matter from a mixture of matters, and processes of filtering soil are also provided.

A ground injection agent concentration estimation method including a injecting an injection liquid to which an injection agent and a marker exhibiting similar behavior in subsurface ground to that of the injection agent have been added, into the subsurface ground through a water injection well; measuring a concentration of the marker at a location spaced apart from the water injection well, and estimating a concentration of the injection agent in the groundwater from the concentration of the marker.

The present invention belongs to the sewage treatment and sand remediation technology, it is about a new type of system and method about sand/water remediation with photocatalytic fuel cell. The characteristic photocatalytic fuel cell (PFC) using photons or solar energy to produce highly active electron/holes is introduced into soil remediation system to degrade pollutants. In the constructed Visible light photocatalytic fuel cell sand water remediation system, there was overlying water above polluted sands in a tubular reactor. Allowing static adsorption equilibrium to buildup, in the built photocatalytic fuel cell, the photocatalytic anode and photoelectric catalytic cathode were connected by wires with an external resistance. Using 50 W halogen lamp as the light source, it maintains photocatalysis and electrocatalytic reactions to degrade pollutants in the system. By degrading the pollutants in the overlying water, the pollutants in the sand were also desorbed and degraded, and rapidly decreased to a very low level. Thus in this system water purification treatment and sand remediation take place simultaneously.

The present invention belongs to the sewage treatment and sand remediation technology, it is about a new type of system and method about sand/water remediation with photocatalytic fuel cell. The characteristic photocatalytic fuel cell (PFC) using photons or solar energy to produce highly active electron/holes is introduced into soil remediation system to degrade pollutants. In the constructed Visible light photocatalytic fuel cell sand water remediation system, there was overlying water above polluted sands in a tubular reactor. Allowing static adsorption equilibrium to buildup, in the built photocatalytic fuel cell, the photocatalytic anode and photoelectric catalytic cathode were connected by wires with an external resistance. Using 50 W halogen lamp as the light source, it maintains photocatalysis and electrocatalytic reactions to degrade pollutants in the system. By degrading the pollutants in the overlying water, the pollutants in the sand were also desorbed and degraded, and rapidly decreased to a very low level. Thus in this system water purification treatment and sand remediation take place simultaneously.