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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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C25C 1 - Electrolytic production recovery or refining of ...
C25C 1 - Electrolytic production recovery or refining of ...

Patents for C25C 1 - Electrolytic production, recovery or refining of metals by ,electrolysis, of solutions (7,523) 12/1978: 12/14/1978: DE2823984A1 Verfahren zur herstellung von kupfer A process ...

How to Treat Wastewater from Iron and Steel Industry ...
How to Treat Wastewater from Iron and Steel Industry ...

In this article we will discuss about the methods and procedures to treat and control ,wastewater from iron and steel, industry. ADVERTISEMENTS: The iron and steel industry, as treated here, includes pig iron production, steel making, rolling operations and those finishing operations common in steel mills, i.e. cold reduction, tin plating and galvanising. Most steel […]

Treatment of Waste
Treatment of Waste

Electrolysis, oxidation or reduction at an electrode surface immersed in a conductive solution under the influence of an applied potential. iii. Hydrolysis Is a reaction of a salt with water to form an ,acid, and a base XY + Water -----> HY + XOH iv. Neutralization Means the adjustment of the pH by addition of either an ,acid, or a base. 6 7.

Electrochemical degradation of the acid orange 10 dye on a ...
Electrochemical degradation of the acid orange 10 dye on a ...

In recent years, advanced oxidation processes have been suggested as an effective and emerging alternative for the treatment of ,wastewater containing, refractory organic pollutants. [6] , [7] Among these methods, electro-oxidation, due to ease of operation, fast reaction rate, high energy efficiency, and being environmental-friendly, has significant attraction.

Solar Thermo-coupled Electrochemical Oxidation of Aniline ...
Solar Thermo-coupled Electrochemical Oxidation of Aniline ...

The ,electrolysis, unit was composed of the aniline-,containing, electrolyte and electrodes. Both the anode and cathode were made of platinum foil with a size of 2 × 2 cm 2 .

Tertiary treatment of wastewater by electro-coagulation ...
Tertiary treatment of wastewater by electro-coagulation ...

Tertiary treatment of ,wastewater, by electro-coagulation, ... were introduced into corresponding digestion tube ,containing, a reagent such as potassium ,dichromate,, sulfuric ,acid,, silver ... ,electrolysis, time at a current intensity (I) equal to 2A is shown in Figure 1.

CHEMICAL SAFETY REPORT - ECHA
CHEMICAL SAFETY REPORT - ECHA

Sodium ,Dichromate, 2014-08-19 CSR-PI-5.5.2 CHEMICAL SAFETY REPORT 3 Scope and type of assessment Human SD exposure via the environment due to emissions from the sites covered in this CSR to ,wastewater, streams is considered in section 9.1.1. While no direct emissions to air occur, indirect emissions to air are assessed as described below.

Treatment of Waste
Treatment of Waste

Electrolysis, oxidation or reduction at an electrode surface immersed in a conductive solution under the influence of an applied potential. iii. Hydrolysis Is a reaction of a salt with water to form an ,acid, and a base XY + Water -----> HY + XOH iv. Neutralization Means the adjustment of the pH by addition of either an ,acid, or a base. 6 7.

Tertiary treatment of wastewater by electro-coagulation ...
Tertiary treatment of wastewater by electro-coagulation ...

Tertiary treatment of ,wastewater, by electro-coagulation, ... were introduced into corresponding digestion tube ,containing, a reagent such as potassium ,dichromate,, sulfuric ,acid,, silver ... ,electrolysis, time at a current intensity (I) equal to 2A is shown in Figure 1.

C i v il E nv iro mental Journal of Civil & Environmental ...
C i v il E nv iro mental Journal of Civil & Environmental ...

that can be digested by heat and sulfuric ,acid,. For our purpose, COD was determined using closed reflux method [3]. In this case, a small volume of sample is heated with concentrated ,dichromate, solution in presence of silver sulphate and mercuric sulphate. The reaction takes place in culture tubes with PTTE-lined screw caps at 150°C. Heating

Using Acetylene as a Low-cost and Effective Methanogenesis ...
Using Acetylene as a Low-cost and Effective Methanogenesis ...

The ,wastewater, was diluted fivefold, twentyfold, and fiftyfold in duplicates. 2.5 ml of diluted samples were dispensed into test tubes ,containing, 1.5 digestion solution and 3.5 catalyst solution. The digestion solution was comprised of 5.1 g potassium ,dichromate, K 2 Cr 2 O 7, 84 mL concentrated sulfuric ,acid, H 2 SO 4, and 16.7 g mercuric

Electrochemical removal of ammonia chemical oxygen demand ...
Electrochemical removal of ammonia chemical oxygen demand ...

Ammonia removals in waters ,containing, Chlorella spp and Isochrysis spp were 87 and 68%, respectively, after 140 min of ,electrolysis,. Energy consumption for ammonia removal in algal‐free water was 50 W mg−1 of ammonia. For waters ,containing, Chlorella spp and Isochrysis spp energy consumptions were 67 and 85 W mg−1 of ammonia, respectively.

Materials | Free Full-Text | Electrochemical Oxidation ...
Materials | Free Full-Text | Electrochemical Oxidation ...

Nitrate, nitrite, NH 4 +, sulphate and phosphate were quantified by the same ion chromatograph (column: Shodex IC I-524A for anions and Shodex IC YK-421 for cations), however, the mobile phase was an aqueous solution ,containing, 5.0 mM tartaric, 1.0 mM dipicolinic ,acid, and 24.3 mM boric ,acid, …

CHEMICAL SAFETY REPORT - ECHA
CHEMICAL SAFETY REPORT - ECHA

The sodium ,dichromate containing, liquor is recycled to the ,electrolysis, step. The process is carried out in a closed loop system with very small quantities of sodium ,dichromate, used per tonne of sodium chlorate produced (10-150 g SD/t sodium chlorate; EC, 2007). The only losses of chromium from the process are due to periodic

Membrane-separated electrochemical latrine wastewater ...
Membrane-separated electrochemical latrine wastewater ...

Fig. 2 a) COD reduction and b) profiles of total chlorine concentration as a function of ,electrolysis, time. c) NH 4 + oxidation in ,wastewater, during ,electrolysis, and d) the recovery of NH 4 + in RS-A. Tests marked with “M” were performed in CEM separated ,electrolysis,. All the ,electrolysis, tests were conducted at 5 mA cm −2, except for STI (M)* and STI (M)** which were operated at 10 and ...

Using Acetylene as a Low-cost and Effective Methanogenesis ...
Using Acetylene as a Low-cost and Effective Methanogenesis ...

The ,wastewater, was diluted fivefold, twentyfold, and fiftyfold in duplicates. 2.5 ml of diluted samples were dispensed into test tubes ,containing, 1.5 digestion solution and 3.5 catalyst solution. The digestion solution was comprised of 5.1 g potassium ,dichromate, K 2 Cr 2 O 7, 84 mL concentrated sulfuric ,acid, H 2 SO 4, and 16.7 g mercuric

Electrochemical Degradation of Reactive Yellow 160 Dye in ...
Electrochemical Degradation of Reactive Yellow 160 Dye in ...

Standard solutions of potassium ,dichromate,, sulfuric ,acid, reagent with silver sulfate, and ... 3.2.5. Effect of the ,Electrolysis, Time. To assess the effect of ,electrolysis, ... "On the performances oflead dioxide and boron-doped diamond electrodes in the anodic oxidation of simulated ,wastewater containing, the Reactive Orange 16 dye ...

CHEMICAL SAFETY REPORT - ECHA
CHEMICAL SAFETY REPORT - ECHA

Sodium ,Dichromate, 2014-08-19 CSR-PI-5.5.2 CHEMICAL SAFETY REPORT 3 Scope and type of assessment Human SD exposure via the environment due to emissions from the sites covered in this CSR to ,wastewater, streams is considered in section 9.1.1. While no direct emissions to air occur, indirect emissions to air are assessed as described below.

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