A method for treatment of tailings including, but not limited to, mature fine tailings (MFT) from mine tailings, oil sands, coal tailings, industrial tailings, thin fine tailings (TF), and laterite tailings. The method comprises contacting the tailing with a deflocculant to reduce the yield stress and viscosity of the tailings, resulting in accelerated solid mineral sedimentation and segregation. The process may yield nanoclays (NCs) that may be used for NC compositions.

A method for treatment of tailings including, but not limited to, mature fine tailings (MFT) from mine tailings, oil sands, coal tailings, industrial tailings, thin fine tailings (TF), and laterite tailings. The method comprises contacting the tailing with a deflocculant to reduce the yield stress and viscosity of the tailings, resulting in accelerated solid mineral sedimentation and segregation. The process may yield nanoclays (NCs) that may be used for NC compositions.

The invention relates to a method for treating an aqueous suspension of solid mineral particles arising from the extraction of ores, comprising the following steps: a soluble polymer is prepared in water, comprising: o at least one non-ionic monomer, selected from the group consisting of acrylamide; methacrylamide; N-monoderivatives of acrylamide; N-monoderivatives of methacrylamide; N,N-derivatives of acrylamide; N,N-derivatives of methacrylamide; acrylic esters; methacrylic esters; N-vinylformamide; and N-vinylpyrrolidone; o at least one anionic monomer representing between 10 and 70 mol %, selected from the group consisting of monomers having a carboxylic functional group and salts thereof; monomers having a sulphonic acid functional group and salts thereof; monomers having a phosphonic acid functional group and salts thereof; o at least one cationic monomer representing between 0.2 and 6 mol %, selected from the group consisting of diallyl dimethylammonium chloride, methacrylamidopropyltrimethylammonium chloride and acrylamidopropyltrimethylammonium chloride; adding said soluble polymer into the water having the aqueous suspension of solid particles. This method is particularly useful for treating residues resulting from the extraction of bituminous sand.

A chemical treatment process and separation module are described for removal of soluble organic compounds and suspended or emulsified oils and/or solids from produced waters that accompany operations for oil and gas recovery. The process occurs in its entirety within an interval of several minutes. The solubility of organic compounds is first reduced, in an optional step, by pH reduction, followed by treatment with coagulants and flocculants, the latter in conjunction with microbubble flotation. The organic compounds that are rendered insoluble, along with other oily solids, are captured in the floe created by the coagulant and flocculant treatment, and simultaneously made buoyant by the concurrent addition of microbubbles. The water and floe is passed over an array of sloped strainers that separates and diverts the floe from the effluent water, which contains significantly reduced soluble organic content. The separated stream of oily solids can be dewatered for disposal as waste.

A chemical treatment process and separation module are described for removal of soluble organic compounds and suspended or emulsified oils and/or solids from produced waters that accompany operations for oil and gas recovery. The process occurs in its entirety within an interval of several minutes. The solubility of organic compounds is first reduced, in an optional step, by pH reduction, followed by treatment with coagulants and flocculants, the latter in conjunction with microbubble flotation. The organic compounds that are rendered insoluble, along with other oily solids, are captured in the floe created by the coagulant and flocculant treatment, and simultaneously made buoyant by the concurrent addition of microbubbles. The water and floe is passed over an array of sloped strainers that separates and diverts the floe from the effluent water, which contains significantly reduced soluble organic content. The separated stream of oily solids can be dewatered for disposal as waste.

A method of separating sludge which involves adding an insoluble mineral colloidal suspension into an industrial sludge to destabilize the industrial sludge and separating destabilized components of the industrial sludge. The insoluble mineral colloidal suspension includes magnesium hydroxide. In an alternative embodiment dry finely divided magnesium hydroxide can be added and then dispersed into an industrial sludge. Conventional flocculants and/or coagulants can also be added. Conventional physical separation processes can be used to separate the destabilized industrial sludge.

Provided is an agent for treating water circulating through a wet paint booth, the agent being capable of reducing the adhesion of a solvent-based paint and coagulating a solvent-based paint to a sufficient degree regardless of the type of the paint, the type of the curing agent used, or the facility conditions, the agent also being capable of markedly reducing the foaming of a water-based paint, even when being used in a small amount. An agent for treating water circulating through a wet paint booth includes a phenolic resin having a weight-average molecular weight of more than 3,000 and 100,000 or less, the phenolic resin serving as an active component. A method for treating circulating water circulating through a wet paint booth includes coagulating a water-based paint and/or a solvent-based paint included in the circulating water by adding the agent to the circulating water.

The present disclosure provides a method for removing silicon powder in a coolant for monocrystalline silicon slicing with a diamond wire, including following steps: preparing an inorganic coagulation-inducing saline solution; mixing the inorganic coagulation-inducing saline solution with a waste coolant of the coolant after monocrystalline silicon slicing to obtain a mixture, and leaving the mixture to stand to carry out agglomeration and precipitation of the silicon powder. The inorganic coagulation-inducing saline solution has advantages of being inexpensive, non-toxic, easy to obtain, and achieving good agglomeration and precipitation. It is inexpensive to remove the silicon powder in the waste coolant for the monocrystalline silicon slicing with the diamond wire, and does not cause environmental pollution. The recovered silicon powder can be recycled and sold again, and the coolant can be reused for cutting after simple treatment.

The present disclosure provides a method for removing silicon powder in a coolant for monocrystalline silicon slicing with a diamond wire, including following steps: preparing an inorganic coagulation-inducing saline solution; mixing the inorganic coagulation-inducing saline solution with a waste coolant of the coolant after monocrystalline silicon slicing to obtain a mixture, and leaving the mixture to stand to carry out agglomeration and precipitation of the silicon powder. The inorganic coagulation-inducing saline solution has advantages of being inexpensive, non-toxic, easy to obtain, and achieving good agglomeration and precipitation. It is inexpensive to remove the silicon powder in the waste coolant for the monocrystalline silicon slicing with the diamond wire, and does not cause environmental pollution. The recovered silicon powder can be recycled and sold again, and the coolant can be reused for cutting after simple treatment.