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Treatment of acid wastewater by nanofiltration membrane

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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Treatment of acid wastewater by nanofiltration membrane
Application of the electrocoagulation technique for ...
Application of the electrocoagulation technique for ...

as arsenic, by aluminum in comparison to ,iron electrodes, could be that the adsorption capacity of hydrous aluminum oxide for As(III) is much lower in comparison to hydrous ferric oxides [23]. By using combination of ,electrodes, between aluminum and ,iron, for treating arsenic ,wastewater,, Gomes et al. [24] demonstrated the substitution

Electrocatalytic Nitrate Reduction by a Cobalt ...
Electrocatalytic Nitrate Reduction by a Cobalt ...

Abstract. A series of simple molecular catalysts, i.e., Co (III), Fe (II), Ni (II), Cu (II), and Rh (II) protoporphyrins (metal-PP), directly adsorbed on pyrolytic ,graphite, have been utilized for catalyzing the electrochemical reduction of nitrate. These catalysts are studied by combining cyclic voltammetry with online electrochemical mass ...

Water | Free Full-Text | Electrocoagulation in Wastewater ...
Water | Free Full-Text | Electrocoagulation in Wastewater ...

Bing-Fang discovered that by using a room temperature of 25 degrees Celsius, ,iron, and stainless steel ,electrodes,, a voltage and a pH of 4, and a Na 2 SO 4 concentration of 0.7 mg/L, and an ,electrolysis, time of 30 minutes, electrocoagulation could treat a simulated ,wastewater, with Cu 2+ and Cr 6+ removal of 93% and 98.91 effectively .

Fermentation | Free Full-Text | Mitigation of Volatile ...
Fermentation | Free Full-Text | Mitigation of Volatile ...

Anaerobic digestion and bioelectrochemical systems have great potential to recover energy from waste streams and help overcome common hurdles associated with this process, as integrated technologies. In this study, the benefit of integrating an electrogen-enriched bioanode in a batch anaerobic digester was explored under ambient temperature conditions associated with organic overloading and ...

Production of hexavalent chromium during electrolysis ...
Production of hexavalent chromium during electrolysis ...

There are generally two methods: one uses sulfuric acid to get to a low pH and sodium metabisulfate to reduce it, the other ferrous sulfate and alkaline pH. In either case, you'd have to then neutralize the ,wastewater, back to neutral. Cr is fairly easy to trace through a sewer system; that means if you dump it, be prepared to spend some time in jail.

Applications of Combined Electrocoagulation and ...
Applications of Combined Electrocoagulation and ...

2/10/2017, · In the EC process, coagulant species are produced in situ using the electrical dissolution of sacrificial anode, usually made of ,iron, or aluminum by electric current applied between metal ,electrodes, [ 1 ]. At the anode, metal is oxidized into cations as shown in Eqs. (1) – (3). Al ( s) → Al ( aq) 3 + + 3e − E1.

Electroflotation of oily wastewater using stainless steel ...
Electroflotation of oily wastewater using stainless steel ...

In the case of electroflotation or electrolytic flotation, only oxygen and hydrogen gases form at the ,electrodes, which are non-sacrificial ,electrodes, such as platinum, gold, stainless steel, ,graphite,, carbon felt and titanium as a result of water ,electrolysis, reactions.

Electrocatalytic Nitrate Reduction by a Cobalt ...
Electrocatalytic Nitrate Reduction by a Cobalt ...

Abstract. A series of simple molecular catalysts, i.e., Co (III), Fe (II), Ni (II), Cu (II), and Rh (II) protoporphyrins (metal-PP), directly adsorbed on pyrolytic ,graphite, have been utilized for catalyzing the electrochemical reduction of nitrate. These catalysts are studied by combining cyclic voltammetry with online electrochemical mass ...

Electrochemical Recovery of Phosphorus from Acidic Cheese ...
Electrochemical Recovery of Phosphorus from Acidic Cheese ...

The ,electrolysis, setup is the same as that described previously. 2. The round-shaped ,electrodes, were fixed horizontally inside the reactor, and the cathode was positioned below the anode with a gap of 3 cm. Pt–Ti rods (Ø 3 mm) were perpendicularly welded to the ,electrodes, and used for power connection.

Application of the electrocoagulation technique for ...
Application of the electrocoagulation technique for ...

as arsenic, by aluminum in comparison to ,iron electrodes, could be that the adsorption capacity of hydrous aluminum oxide for As(III) is much lower in comparison to hydrous ferric oxides [23]. By using combination of ,electrodes, between aluminum and ,iron, for treating arsenic ,wastewater,, Gomes et al. [24] demonstrated the substitution

Applications of Combined Electrocoagulation and ...
Applications of Combined Electrocoagulation and ...

2/10/2017, · In the EC process, coagulant species are produced in situ using the electrical dissolution of sacrificial anode, usually made of ,iron, or aluminum by electric current applied between metal ,electrodes, [ 1 ]. At the anode, metal is oxidized into cations as shown in Eqs. (1) – (3). Al ( s) → Al ( aq) 3 + + 3e − E1.

Production of hexavalent chromium during electrolysis ...
Production of hexavalent chromium during electrolysis ...

There are generally two methods: one uses sulfuric acid to get to a low pH and sodium metabisulfate to reduce it, the other ferrous sulfate and alkaline pH. In either case, you'd have to then neutralize the ,wastewater, back to neutral. Cr is fairly easy to trace through a sewer system; that means if you dump it, be prepared to spend some time in jail.

Treatment of Petrochemical wastewater by Modified electro ...
Treatment of Petrochemical wastewater by Modified electro ...

This research reported a study on COD removal from petrochemical ,wastewater, (ml/l) by the electro-Fenton process via the effects of different parameters such as reaction time, current density, pH, H2O2/Fe2+ molar ratio, and volume fraction of H2O2. For this purpose, first, the Nanopores on the aluminum ‌electrode surface were prepared as the AAO films were fabricated using the two-step ...

Electroflotation of oily wastewater using stainless steel ...
Electroflotation of oily wastewater using stainless steel ...

In the case of electroflotation or electrolytic flotation, only oxygen and hydrogen gases form at the ,electrodes, which are non-sacrificial ,electrodes, such as platinum, gold, stainless steel, ,graphite,, carbon felt and titanium as a result of water ,electrolysis, reactions.

Treatment of Petrochemical wastewater by Modified electro ...
Treatment of Petrochemical wastewater by Modified electro ...

This research reported a study on COD removal from petrochemical ,wastewater, (ml/l) by the electro-Fenton process via the effects of different parameters such as reaction time, current density, pH, H2O2/Fe2+ molar ratio, and volume fraction of H2O2. For this purpose, first, the Nanopores on the aluminum ‌electrode surface were prepared as the AAO films were fabricated using the two-step ...

Wastewater treatment from the biodiesel production using ...
Wastewater treatment from the biodiesel production using ...

This study investigated the treatability of biodiesel wastewater by the EC process using aluminum and iron electrodes with the addition of NaCl as an electrolyte solution. The effectiveness of the EC process using each electrode material for the treatment of biodiesel wastewater was evaluated and optimized in terms of removal efficiency.

Wastewater treatment from the biodiesel production using ...
Wastewater treatment from the biodiesel production using ...

This study investigated the treatability of biodiesel wastewater by the EC process using aluminum and iron electrodes with the addition of NaCl as an electrolyte solution. The effectiveness of the EC process using each electrode material for the treatment of biodiesel wastewater was evaluated and optimized in terms of removal efficiency.

Electrochemical Recovery of Phosphorus from Acidic Cheese ...
Electrochemical Recovery of Phosphorus from Acidic Cheese ...

The ,electrolysis, setup is the same as that described previously. 2. The round-shaped ,electrodes, were fixed horizontally inside the reactor, and the cathode was positioned below the anode with a gap of 3 cm. Pt–Ti rods (Ø 3 mm) were perpendicularly welded to the ,electrodes, and used for power connection.

Water | Free Full-Text | Electrocoagulation in Wastewater ...
Water | Free Full-Text | Electrocoagulation in Wastewater ...

Bing-Fang discovered that by using a room temperature of 25 degrees Celsius, ,iron, and stainless steel ,electrodes,, a voltage and a pH of 4, and a Na 2 SO 4 concentration of 0.7 mg/L, and an ,electrolysis, time of 30 minutes, electrocoagulation could treat a simulated ,wastewater, with Cu 2+ and Cr 6+ removal of 93% and 98.91 effectively .

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