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How to deal with fracturing flowback fluid

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 deal with fracturing flowback fluid
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 ...

Electrocatalytic performance of PbO films 2 in the ...
Electrocatalytic performance of PbO films 2 in the ...

In this study, during ,electrolysis,, we used COD as an indicator for the presence of dimethoate and its by-products. COD was determined by the ,dichromate, method. The appropriate amount of sample was introduced into a prepared digestion solution (0–1 500 mg·ℓ–1) ,containing, potassium ,dichromate,, sulphuric ,acid, and mercuric sulphate, and the

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 ...

Sub-Pilot-Scale Hybrid Electrochemical System for Water ...
Sub-Pilot-Scale Hybrid Electrochemical System for Water ...

Electrolysis, experiments were carried out in a sub-pilot scaled reactor with a volume of 20 L. Schematic diagram of the overall hybrid ,electrolysis, is shown in Figure 7.1. The electrode couple (5 BiOx–TiO2/Ti(0) anodes and 6 SS cathodes) was immersed in 20 L of tap water. NaCl (J.T.Baker) was used as a primary supporting electrolyte in the

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 ...

Treatment of wastewater containing polyacrylamide using ...
Treatment of wastewater containing polyacrylamide using ...

A method using three-dimensional electrode is applied to treat ,wastewater, in oil fields, which contains polyacrylamide (PAM), for analogue. A best condition for ,electrolysis, ( I = 1.0 A, t =90 min, c =0.1%, m =980 g, ϕ =5 mm, d =5.0 cm) has been determined, under which the COD removal efficiency reached 96.0%, COD ,containing, in ,wastewater, reduced ...

Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...
Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...

Acid, leaching efficiency of Fe 2 C 2 O 4 ·2H 2 O as a function of (a) HCl concentration (S/L = 100 g/L, T = 65 °C, t = 5 h), (b) leaching time (S/L = 100 g/L, T = 65 °C, HCl = 5 mol/L), (c) liquid-to-solid ratios (T = 65 °C, t = 5 min), and (d) the FTIR spectra of pure ,oxalic acid, and the ,acid, leaching solution.

1. Introduction
1. Introduction

To confirm our preparation, the alloy substrate was soaked for 2 min in a pickling solution consisting of nitric ,acid, (400 g L −1) and hydrofluoric ,acid, (5 g L −1), and then chemically polished in boiled oxalic ,acid, solution (100 g L −1) for 5 min. Potentiodynamic anodization of Pb-Sn alloy was carried out at 80°C in the potential range from −1.25 V to +2.35 V with a sweep rate 200 mV s −1.

Electrochemical degradation of the Acid Orange 10 dye on a ...
Electrochemical degradation of the Acid Orange 10 dye on a ...

The COD was determined colorimetrically by the ,dichromate, method. For this purpose, an appropriate amount of the sample was intro-duced into a commercially available digestion solution ,containing, potassium ,dichromate,, sulfuric ,acid,, and mercuric sulfate (HACH LANGE, UK), and the mixture was incubated for 120min at 150oC

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

Sub-Pilot-Scale Hybrid Electrochemical System for Water ...
Sub-Pilot-Scale Hybrid Electrochemical System for Water ...

Electrolysis, experiments were carried out in a sub-pilot scaled reactor with a volume of 20 L. Schematic diagram of the overall hybrid ,electrolysis, is shown in Figure 7.1. The electrode couple (5 BiOx–TiO2/Ti(0) anodes and 6 SS cathodes) was immersed in 20 L of tap water. NaCl (J.T.Baker) was used as a primary supporting electrolyte in the

1. Introduction
1. Introduction

To confirm our preparation, the alloy substrate was soaked for 2 min in a pickling solution consisting of nitric ,acid, (400 g L −1) and hydrofluoric ,acid, (5 g L −1), and then chemically polished in boiled oxalic ,acid, solution (100 g L −1) for 5 min. Potentiodynamic anodization of Pb-Sn alloy was carried out at 80°C in the potential range from −1.25 V to +2.35 V with a sweep rate 200 mV s −1.

HOHFWURFKHPLFDOR[LGDWLRQRQ%''DQRGH
HOHFWURFKHPLFDOR[LGDWLRQRQ%''DQRGH

pseudo-first order model. Remarkably, the ,electrolysis, process is significantly speeded up once chloride is added to the reaction. The complete COD removal was achieved in 60 minutes of treatment. Keywords: Boron-doped diamond electrode, Electrochemical oxidation, Veratric ,acid,, ,wastewater,, Advanced oxidation processes 1. Introduction

Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...
Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...

Acid, leaching efficiency of Fe 2 C 2 O 4 ·2H 2 O as a function of (a) HCl concentration (S/L = 100 g/L, T = 65 °C, t = 5 h), (b) leaching time (S/L = 100 g/L, T = 65 °C, HCl = 5 mol/L), (c) liquid-to-solid ratios (T = 65 °C, t = 5 min), and (d) the FTIR spectra of pure ,oxalic acid, and the ,acid, leaching solution.

HOHFWURFKHPLFDOR[LGDWLRQRQ%''DQRGH
HOHFWURFKHPLFDOR[LGDWLRQRQ%''DQRGH

pseudo-first order model. Remarkably, the ,electrolysis, process is significantly speeded up once chloride is added to the reaction. The complete COD removal was achieved in 60 minutes of treatment. Keywords: Boron-doped diamond electrode, Electrochemical oxidation, Veratric ,acid,, ,wastewater,, Advanced oxidation processes 1. Introduction

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

Treatment of wastewater containing polyacrylamide using ...
Treatment of wastewater containing polyacrylamide using ...

A method using three-dimensional electrode is applied to treat ,wastewater, in oil fields, which contains polyacrylamide (PAM), for analogue. A best condition for ,electrolysis, ( I = 1.0 A, t =90 min, c =0.1%, m =980 g, ϕ =5 mm, d =5.0 cm) has been determined, under which the COD removal efficiency reached 96.0%, COD ,containing, in ,wastewater, reduced ...

Electrochemical degradation of the Acid Orange 10 dye on a ...
Electrochemical degradation of the Acid Orange 10 dye on a ...

The COD was determined colorimetrically by the ,dichromate, method. For this purpose, an appropriate amount of the sample was intro-duced into a commercially available digestion solution ,containing, potassium ,dichromate,, sulfuric ,acid,, and mercuric sulfate (HACH LANGE, UK), and the mixture was incubated for 120min at 150oC

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