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How to treat acid wastewater from Tailings

Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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How to treat acid wastewater from Tailings
Boiler Cooling Sewage Evaporator Water Treatment Chemicals ...
Boiler Cooling Sewage Evaporator Water Treatment Chemicals ...

Hydrazine, is a convenient reductant because the by-products are typically nitrogen gas and, water,. Thus, it is used as an ANTIOXIDANT, an oxygen scavenger, and a corrosion inhibitor in water boilers and heating systems., Hydrazine, is mainly used as a foaming agent in preparing polymer foams.

Rare earth removal of hydrated and hydroxyl species ...
Rare earth removal of hydrated and hydroxyl species ...

A method, comprising: contacting, in an aqueous liquid medium, a rare earth-,containing, additive with one or more of a metal or metalloid hydroxide, carbonate, and ,hydrate, to remove the one or more of the metal or metalloid hydroxide, carbonate, and ,hydrate, from the aqueous liquid medium.

Water Treatment Chemicals - CAT Sulphite 25 Ltr ...
Water Treatment Chemicals - CAT Sulphite 25 Ltr ...

Hydrazine, is a convenient reductant because the by-products are typically nitrogen gas and water. Thus, it is used as an ANTIOXIDANT, an oxygen scavenger, and a corrosion inhibitor in water boilers and heating systems. ,Hydrazine, is mainly used as a foaming agent in preparing polymer foams.

Recommended Methods of Reduction Neutralization Recovery ...
Recommended Methods of Reduction Neutralization Recovery ...

A ,process, developed by the Bureau of Mines at the College Park Metallurgic Research Center 0128 recovers lead and ,copper, from lead matte. In this ,process,, all the sulfides are first oxidized to sulfates by roasting, so that subsequent water leaching of the roasted products will extract the ,copper, and other water-soluble salts.

US6423236B1 - Method for treating waste water - Google Patents
US6423236B1 - Method for treating waste water - Google Patents

The present invention relates to a ,method for treating waste water, including the steps of: oxidizing the ,waste water,, and then ,treating, the oxidized ,waste water, with a reverse osmosis membrane having high salt rejection rate.

Rare earth removal of hydrated and hydroxyl species ...
Rare earth removal of hydrated and hydroxyl species ...

A method, comprising: contacting, in an aqueous liquid medium, a rare earth-,containing, additive with one or more of a metal or metalloid hydroxide, carbonate, and ,hydrate, to remove the one or more of the metal or metalloid hydroxide, carbonate, and ,hydrate, from the aqueous liquid medium.

DMEA ( DIMETHYLETHANOLAMINE) | Ataman Kimya A.Ş.
DMEA ( DIMETHYLETHANOLAMINE) | Ataman Kimya A.Ş.

They vastly improve solid/liquid separation processes such as sedimentation, filtration and flotation, and are thus widely used in the potable water and ,wastewater, treatment industries to remove colloidal and suspended solids, as well as in the paper and mineral processing industries.

Nanomaterials | Free Full-Text | Oxygen Reduction Reaction ...
Nanomaterials | Free Full-Text | Oxygen Reduction Reaction ...

With the help of the hydrogen bonding with their functional groups, they can show an extremely strong adsorption effect. The reduced graphene oxide is prepared based on graphene oxide. Due to the loss of related oxidation groups, it exhibits relative chemical stability. The preparation ,process, of rGO and GO is shown in Figure 3.

US4039327A - Stepwise process for recovering precious ...
US4039327A - Stepwise process for recovering precious ...

Finally, a "clarifier" (e.g., ,hydrazine, or a hydrosulfite) is added and the elevated temperature is maintained for at least a brief period after the addition. The solution is then cooled and the elemental precious metal particles formed are allowed to settle and are separated from the supernatant solution.

Nanomaterials | Free Full-Text | Synthesis and Application ...
Nanomaterials | Free Full-Text | Synthesis and Application ...

The purification ,process, removed >90% arsenic and nearly all ,copper,, and reduced the concentration of other elements to well below 0.1 mg/L. Iron and the mentioned eleven impurities were identified in the spent nZVI; their relative abundance followed a similar order as in the influent ,wastewater,. nZVI served as solid seeds to facilitate product separation, and the removal mechanisms of nZVI included ,reduction,, …

Lithium Aluminum Hydride as Reducing Agent for Chemically ...
Lithium Aluminum Hydride as Reducing Agent for Chemically ...

Compared to electrical reduction, thermal reduction, and catalytic reduction, this approach is not only easy for operation, free of, high temperature and high voltage,, but also has, high reduction, ...

DMEA ( DIMETHYLETHANOLAMINE) | Ataman Kimya A.Ş.
DMEA ( DIMETHYLETHANOLAMINE) | Ataman Kimya A.Ş.

WPU dispersions in which isophorone diisocyanate, poly-1, 4-butylene adipate glycol, 2, 2-bis(hydroxymethyl)propionic acid (DMPA) and trimethylol propane were all used as raw materials of polyurethane prepolymer, triethyl amine and/or N, N-dimethylethanolamine (DMEA) as neutralizers, ,hydrazine hydrate, and 2-[(2-aminoethyl)amino]ethanesulfonic acid sodium salt as post-chain …

US6423236B1 - Method for treating waste water - Google Patents
US6423236B1 - Method for treating waste water - Google Patents

The present invention relates to a method for ,treating, waste water including the steps of: oxidizing the waste water, and then ,treating, the oxidized waste water with a reverse osmosis membrane having high salt rejection rate.

Waste Water Treatment and Reuse in a Metal Finishing Job Shop
Waste Water Treatment and Reuse in a Metal Finishing Job Shop

Hydrazine hydrate was found to be an effective reducing agent for the application, and it was not lost through wasteful breakdown. Therefore, the systems were converted to hydrazine use in early 1970, after nearly a year of opera- tion, and the costs for reducing chemicals were drastically reduced.

Method for oxyanion removal from ground water - THE PENN ...
Method for oxyanion removal from ground water - THE PENN ...

The method according to claim 29 wherein said fluid also passes over a carbonaceous material or metal-,containing, material, or silica-,containing, material that has been loaded with or preconditioned with at least one ionic organic species or hydroxide species and at least one metal or alkaline earth metal, wherein said fluid then passes through a carbonaceous media or metal-,containing, media that ...

Chemistry 9th Edition by Steven S. Zumdah – Solution Manual
Chemistry 9th Edition by Steven S. Zumdah – Solution Manual

A sample ,containing, 33.42 g of metal pellets is poured into a; graduated cylinder initially ,containing, 12.7 mL of water, causing. the water level in the cylinder to rise to 21.6 mL. Calculate. the density of the metal. The density of pure silver is 10.5 g/cm3 at 208C. If 5.25 g of; pure silver pellets is added to a graduated cylinder ,containing

Nanomaterials | Free Full-Text | Oxygen Reduction Reaction ...
Nanomaterials | Free Full-Text | Oxygen Reduction Reaction ...

With the help of the hydrogen bonding with their functional groups, they can show an extremely strong adsorption effect. The reduced graphene oxide is prepared based on graphene oxide. Due to the loss of related oxidation groups, it exhibits relative chemical stability. The preparation ,process, of rGO and GO is shown in Figure 3.

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