A product and method are disclosed for the removal of contamination from a water flow in which the product according to the invention blended into a contaminated water flow gather contamination to large easily separable agglomerates. A use of product and method for separation of contamination from water is also disclosed.

There is described an embodiment of a wastewater treatment system comprising a tank, agitating devices, a water pipe, connecting pipes, dosing devices, a flow-slowing device, and a blow-off pipe. The agitating devices are connected with the tank through the water pipe, the agitating devices being connected therebetween by the connecting pipes. Each one of the agitating devices comprises one of a pump and an agitated tank, the agitating devices mix wastewater and a flocculant together. The dosing devices are provided on the water pipe and the connecting pipes, the dosing devices dose at least one of the flocculant, a coagulant, a pH adjuster and combination thereof to be added in the wastewater treatment system. The flocculant and coagulant are instant dissolving for providing ion exchange between wastewater and the flocculant. Each one of the dosing devices comprises one of a dosing pump and a siphon valve. The pump, the siphon valve or both being free of negative pressure. The flow-slowing device is provided within at least one of the water pipe and the connecting pipes, the flow-slowing device having a flow-restrictive structure. The blow-off pipe discharges treated wastewater.

A coagulant-flocculant mixture, a method of making such a coagulant-flocculant mixture, and a method of using such a coagulant-flocculant mixture for treating effluent containing particles within an aqueous medium to facilitate separating the particles and the aqueous medium, whereby the coagulant-flocculant mixture includes an amount of coagulant combined with an amount of flocculant.

Provided is a water-purifying agent formed of a granulated product including a mixture of a plant powder and a polymeric flocculant, wherein a surface of the granulated product includes a coated portion in which the plant powder is coated with the polymeric flocculant and a non-coated portion in which the plant powder is not coated with the polymeric flocculant.

The present invention provide a polymer flocculant mixing and dissolving system and a method for mixing and dissolving a polymer flocculant that can produce a polymer flocculant solution in a short period of time using low power.

A polymer flocculant mixing and dissolving system having: a mixing tank (2) in which a solid polymer flocculant is mixed with water as a solvent; a liquid feed unit (3) for feeding an aqueous solution containing the mixed polymer flocculant from the mixing tank; a regenerative mixer (4A, 4B) that comprises a casing arranged at an intermediate position of a channel for the aqueous solution discharged from the liquid feed unit, and a bladed wheel in which grooves are formed in a radial pattern all over an outer circumference, and is used to mix and dissolve the polymer flocculant through pressure application by rotating the bladed wheel in the casing and forming a vortex flow of the aqueous solution along an inner circumferential wall of the casing, furthermore performs pressure the pressure on the discharge side of the regenerative mixer using the pressure adjusting unit.

The present invention is directed to a polymer dissolution system comprising a mix tank, a strainer, and a pump. The mix tank is configured to receive polymers, water, and an inlet stream, to form a polymer solution including swollen polymers, and to discharge the polymer solution. The strainer is configured to receive the polymer solution, and to withdraw at least a portion of the swollen polymers therethrough substantially without shear degradation, thereby forming a resultant solution, wherein the swollen polymers are dissolved at least in part. The pump is configured to receive the resultant solution, and to return the resultant solution to the inlet stream. In some embodiments, the strainer and the pump cooperate together to maintain a viscosity of the resultant solution substantially within a predetermined range.

Dehydrator systems having a core dehydrator and a mixing unit are described herein and methods of using the same. The core dehydrator comprises a turbulent flow mixing compartment the turbulent flow mixing compartment with plate openings having a turbulent flow transition zone where linear speed of fluid flow is reduced, a clarifying sediment chamber, where fluid flow is substantially laminar) comprising a plurality of small deflector plaques and a plurality of large deflector plaques and a flocculation pipe. In the turbulent flow transition zone, fluid flow transitions from turbulent flow to laminar flow. The mixing unit comprises a plurality of vertical flocculators. The mixing unit further comprises a rapid mixing manifold. The rapid mixing manifold contains drilling fluids and flocculant polymers.

A removal method of manganese in which manganese is removed by precipitating manganese selectively from sulfuric acid waste water containing aluminum, magnesium and manganese with inhibiting the precipitation of magnesium. The removal method of manganese from waste water in which manganese is removed by precipitating manganese selectively from the sulfuric acid waste water containing aluminum, magnesium and manganese with inhibiting the precipitation of magnesium, characterized in that said waste water is subjected to the following steps (1) and (2). (1) First, aluminum in said waste water is removed. (2) Subsequently, neutralizing agent is added into the wastewater after removing aluminum, then pH of the waste water is adjusted at 8.0 to 9.0, and oxygen gas is blown.

A system for use introducing materials, such as powdered flocculants, can be used with a sedimentation tank. The system includes a bypass circuit for directing water from an inlet of the sedimentation tank to a dosing tank, where the material is added. A pump redirects water from the dosing tank back into the inlet of the sedimentation tank. A metering unit an controller can be used to control the amount of material dispensed into the dosing tank. A series of valves, float switches, and flow meters can be used to control the flowrate and operation of the system.

A silica inhibitor is disclosed for inhibiting silica scale formation and dispersing silica. In one aspect, a method for reducing silica levels in an aqueous system involves obtaining a silica inhibitor with a branched polyethylenimine and treating the aqueous system with the silica inhibitor. In another aspect, a method for preparing a silica inhibitor involves obtaining a branched polyethylenimine and protonating the branched polyethylenimine to attain a charged inhibitor with a high-density cationic state. In yet another aspect, a silica inhibitor includes a branched polyethylenimine, a phosphonate, and optionally one or more of a linear polymer based on polyvinyl alcohol, a linear polymer based on polyacrylic acid, and an architectured material.