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Influence of acid mine wastewater on plants

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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Influence of acid mine wastewater on plants
A novel technology for vanadium and chromium recovery from ...
A novel technology for vanadium and chromium recovery from ...

1/8/2017, · In Panzhihua Iron and Steel Company, the wastewater is treated by reduction, with sodium pyrosulfite,, followed by neutralization to form a V-Cr-bearing reducing slag. In which, vanadium mainly occurs as V(IV) (> 85%) and the others occur as V(III)., Chromium, exists in …

Separation and recovery of vanadium and chromium from ...
Separation and recovery of vanadium and chromium from ...

1/10/2017, · Currently, the wastewater is treated by reduction, with sodium pyrosulfite,, followed by neutralization to form a V-Cr-bearing reducing slag. In which, vanadium mainly occurs as V(IV) and, chromium, exists in the form of Cr(III) . In China, every year more than 500 thousand tons of the V-Cr-bearing reducing slag is produced .

Sodium Bisulfite production - Chemical plant design ...
Sodium Bisulfite production - Chemical plant design ...

10/3/2010, · ,Sodium, metabisulfite (,sodium pyrosulfite,, ,sodium bisulfite, (a misnomer)), Na2S2O5, is a white granular or powdered salt (specific gravity 1.48) and is storable when kept dry and protected from air. In the presence of traces of water it develops an odor of sulfur dioxide and in moist air it decomposes with loss of part of its SO2 content and by oxidation to ,sodium, sulfate.

Industrial Chemicals - Borax Decahydrate Wholesaler from ...
Industrial Chemicals - Borax Decahydrate Wholesaler from ...

Sodium, metabisulfite or ,sodium pyrosulfite, (IUPAC spelling; Br. E. ,sodium, metabisulphite or ,sodium, pyrosulphite) is an inorganic compound of chemical formula Na 2 S 2 O 5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant, and preservative agent. UsesFood additive

Water Treatment Chemical - Sulfamic Acid Manufacturer from ...
Water Treatment Chemical - Sulfamic Acid Manufacturer from ...

Sodium, metabisulfite or ,sodium pyrosulfite, is an inorganic compound of chemical formula Na 2 S 2 O 5. The substance is sometimes referred to as disodium (metabisulfite). It is used as a disinfectant, antioxidant and preservative agent.

Separation and recovery of vanadium and chromium from ...
Separation and recovery of vanadium and chromium from ...

1/10/2017, · Currently, the wastewater is treated by reduction with sodium pyrosulfite, followed by neutralization to form a V-Cr-bearing reducing slag. In which, vanadium mainly occurs as V(IV) and chromium exists in the form of Cr(III) . In China, every year more than 500 thousand tons of the V-Cr-bearing reducing slag is produced .

Simultaneous recovery of chromium and destruction of ...
Simultaneous recovery of chromium and destruction of ...

In addition to organic matter conversion, removal of toxic ,chromium, ions, initially measured in the raw ,wastewater, at an extremely high concentration of 844 mg/L by means of UV-VIS spectrometry ...

Protection of groundwater from migration of infiltrates ...
Protection of groundwater from migration of infiltrates ...

chromic wastewater by reducing hexavalent chromium to trivalent chromium in an acid environment and then pre-cipitating the latter as chromium (III) hydroxide. In addi-tion to the above-mentioned sodium sulphite and pyro-sulfite, the use of the reducing agents sulphur dioxide (SO. 2) and sodium acid sulphate (NaHSO. 3) at a lower pH

Sodium Metabisulfite (Na2S2O5) - Structure Properties Uses
Sodium Metabisulfite (Na2S2O5) - Structure Properties Uses

Sodium metabisulfite, is a chemical compound with the formula Na 2 S 2 O 5. It is also known as ,sodium pyrosulfite, and ,sodium, disulfite. Na 2 S 2 O 5 is an ionic compound ,containing, the ,sodium, cation (Na +) and the metabisulfite anion (S 2 O 52- ). In its standard state, ,sodium metabisulfite, exists as a white or yellowish-white powder, as shown ...

Zhiyong Wu Jie Feng 2b and Zuoqin Tang 3c
Zhiyong Wu Jie Feng 2b and Zuoqin Tang 3c

General procedure of chromium-containing wastewater treatment by sodium pyrosulfite: adjust pH to acidic→ put in sodium pyrosulfite to degrade Cr6+ to Cr3+→, adjust, pH to 3+6-9 to deposit Cr → discharge supernatant and process sedimentation intensively. Analyses.

Adsorption Separation of Cr(VI) from a Water Phase Using ...
Adsorption Separation of Cr(VI) from a Water Phase Using ...

A feasible treatment train was designed to remove Cr6+ from ,wastewater,. Cr6+ anionic species were chem. deoxidized and reduced to lower toxicity Cr3+ cations with a ,sodium pyrosulfite, reductant. Intentionally-designed alk. adsorbents which exhibited weak alkalescence in water were used to ppt. and adsorb Cr3+ with no pH adjustment.

Sodium metabisulfite | 7681-57-4
Sodium metabisulfite | 7681-57-4

Visit ChemicalBook To find more ,Sodium metabisulfite,(7681-57-4) information like chemical properties,Structure,melting point,boiling point,density,molecular formula,molecular weight, physical properties,toxicity information,customs codes. You can also browse global suppliers,vendor,prices,Price,manufacturers of ,Sodium metabisulfite,(7681-57-4).

Water Treatment Chemical - Sulfamic Acid Manufacturer from ...
Water Treatment Chemical - Sulfamic Acid Manufacturer from ...

Sodium, metabisulfite or ,sodium pyrosulfite, is an inorganic compound of chemical formula Na 2 S 2 O 5. The substance is sometimes referred to as disodium (metabisulfite). It is used as a disinfectant, antioxidant and preservative agent.

Adsorption Separation of Cr(VI) from a Water Phase Using ...
Adsorption Separation of Cr(VI) from a Water Phase Using ...

A feasible treatment train was designed to remove Cr6+ from ,wastewater,. Cr6+ anionic species were chem. deoxidized and reduced to lower toxicity Cr3+ cations with a ,sodium pyrosulfite, reductant. Intentionally-designed alk. adsorbents which exhibited weak alkalescence in water were used to ppt. and adsorb Cr3+ with no pH adjustment.

Sodium metabisulfite CAS#: 7681-57-4
Sodium metabisulfite CAS#: 7681-57-4

Sodium metabisulfite, (chemical formula: Na2S2O5) appears as a white crystalline or powder solid with a slight sulfur odor. It is toxic upon inhalation and can strongly irritate skin and tissue. It can be decomposed to release toxic oxide fumes of sulfur and ,sodium, upon high temperature. It can be mixed with water to form a corrosive ,acid,.

Eczema Homeopathic Cure - Central Lakes Medical
Eczema Homeopathic Cure - Central Lakes Medical

Usnic ,acid, is a component of lichens, ... contact with cement and ,chromium,-,containing, materials are well known to cause skin ulcers. The latter includes leathers that have been tanned with ,chromium, compounds. ... ,Sodium Pyrosulfite, Disodium Disulfite E223 CAS Registry Number [7681574O O. Last Updated on Thu, ...

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