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Treatment of acid wastewater containing hexavalent chromium ion

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 containing hexavalent chromium ion
Improvement the Activity and Selectivity of Fenton System ...
Improvement the Activity and Selectivity of Fenton System ...

The Fenton reagent is a simple catalyst system which is composed of Fe 2+ and H 2 O 2. In the reaction process with Fenton’s reagent, the hydroxyl radicals are generated rapidly at the presence of ferrous ion. This catalyst system is proved to be successful for the treatment of organic pollutants in industrial wastewater [1–12].

Modified Fenton's processes for effective in‐situ chemical ...
Modified Fenton's processes for effective in‐situ chemical ...

Abstract. ,Fenton,'s ,reagent, in its conventional form, although effective for contaminant treatment, is impractical from an in‐situ field ,application, perspective due to low pH requirements (i.e., pH 3‐4), and limited ,reagent, mobility when introduced into the subsurface. Modified ,Fenton,'s processes that use chelated‐iron catalysts and stabilized ...

[PDF] Applications of Advanced Oxidation for Wastewater ...
[PDF] Applications of Advanced Oxidation for Wastewater ...

These AOPs utilize the very ,strong, oxidizing power of hydroxyl radicals to oxidize organic compounds to the preferred end products of carbon dioxide and water. Advanced oxidation has been used to treat ,wastewater, from groundwater remediation pump-and-treat systems, manufacturing facilities, domestic ,wastewater, treatment plants, and others.

COAGULATION AND FLOCCULATION TREATMENT OF WASTEWATER …
COAGULATION AND FLOCCULATION TREATMENT OF WASTEWATER …

Besides, the sample of ,wastewater, was adjusted from the initial pH 12.99 to pH 4 in the experiments due to chitosan is soluble in acidic aqueous phases, but insoluble in basic aqueous phases. The pH was controlled by adding either ,strong acid, (HCl) or ,strong, base (NaOH). Before fractionated into the beakers containing 500mL of

Fenton and solar photo-Fenton processes for the removal of ...
Fenton and solar photo-Fenton processes for the removal of ...

The use ,of Fenton, and photo-,Fenton, processes in the treat-ment of pesticide-containing ,wastewater, is a recent ,application,. The degradation of triazine herbicides (Burrows et al., 2002), methylparathion (Chiron et al., 1999), fenuron (Acero et al., In this work, the efficiency of AOPs in the remediation of

Progress in the Mechanism and Kinetics of Fenton Reaction
Progress in the Mechanism and Kinetics of Fenton Reaction

/ferric oxalate [8], microwave/,Fenton reagent, [9], and ultrasound/ ,Fenton reagent, [10]. The mechanism ,of Fenton, reaction and the intermediate species are still under controversial discussion although the ,Fenton reagent, has been researched by many researchers as a powerful oxidant in ,wastewater, treatment, biological systems and natural water.

PAPER OPEN ACCESS Study on Application of Activated Carbon ...
PAPER OPEN ACCESS Study on Application of Activated Carbon ...

new ecology [H] has ,strong, reductive decolorization effect on dyestuff chromaticity in waste liquid, the dissolved Fe2+ can form ,Fenton reagent, with H 2O2, ,strong, Oxidation decomposition of Non-Dyes in dyeing ,wastewater, decolorization products and other refractory organic compounds [11]. Under

Synergy of combined free nitrous acid and Fenton ...
Synergy of combined free nitrous acid and Fenton ...

19/3/2020, · Hydrogen peroxide can also be produced in wastewater treatment plants via bio-electrochemical process 19, which leads Fenton reaction to be …

USE OF FENTON'S REAGENT FOR REMOVAL OF PESTICIDES …
USE OF FENTON'S REAGENT FOR REMOVAL OF PESTICIDES …

process of pesticide removal from industrial ,wastewater, using ,Fenton,’s reaction has been analysed by taking into consideration COD removal. The optimum ratio of [Fe2+] to [H2O2] was 1:1.56 (mM/mM) at pH 3.0 and room temperature (20°C). 93 % COD removal was achieved when treated ,wastewater, by ,Fenton,’s ,reagent,. Keywords: Pesticide removal ...

Application of Advanced Oxidation Process for Water and ...
Application of Advanced Oxidation Process for Water and ...

(d)Fenton-Related AOPs Iron is most commonly used material for the generation of hydroxyl radicals in the treatment process of waste water. The process is called as fenton process. In this process ,H 2 O 2 reacts with Fe2+ to generate strong reactive species. The

COAGULATION AND FLOCCULATION TREATMENT OF WASTEWATER …
COAGULATION AND FLOCCULATION TREATMENT OF WASTEWATER …

Besides, the sample of ,wastewater, was adjusted from the initial pH 12.99 to pH 4 in the experiments due to chitosan is soluble in acidic aqueous phases, but insoluble in basic aqueous phases. The pH was controlled by adding either ,strong acid, (HCl) or ,strong, base (NaOH). Before fractionated into the beakers containing 500mL of

Cosmetic wastewater primary treatment by fenton process ...
Cosmetic wastewater primary treatment by fenton process ...

This work aimed to integrate two ,wastewater, treatment technologies, ,Fenton, process as the primary treatment and adsorption aiming achieve maximum removal efficiency and adequation to the environmental and water legislations. ,Wastewater, from a cosmetics industry plant in the metropolitan area of Goiânia (Brazil) was the object of this research.

Progress in the Mechanism and Kinetics of Fenton Reaction
Progress in the Mechanism and Kinetics of Fenton Reaction

/ferric oxalate [8], microwave/,Fenton reagent, [9], and ultrasound/ ,Fenton reagent, [10]. The mechanism ,of Fenton, reaction and the intermediate species are still under controversial discussion although the ,Fenton reagent, has been researched by many researchers as a powerful oxidant in ,wastewater, treatment, biological systems and natural water.

Modified Fenton's processes for effective in‐situ chemical ...
Modified Fenton's processes for effective in‐situ chemical ...

Abstract. ,Fenton,'s ,reagent, in its conventional form, although effective for contaminant treatment, is impractical from an in‐situ field ,application, perspective due to low pH requirements (i.e., pH 3‐4), and limited ,reagent, mobility when introduced into the subsurface. Modified ,Fenton,'s processes that use chelated‐iron catalysts and stabilized ...

Fenton and solar photo-Fenton processes for the removal of ...
Fenton and solar photo-Fenton processes for the removal of ...

The use of Fenton and photo-Fenton processes in the treat-ment of pesticide-containing wastewater is a recent application. The degradation of triazine herbicides (Burrows et al., 2002), methylparathion (Chiron et al., 1999), fenuron (Acero et al., In this work, the efficiency of AOPs in the remediation of

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

Electro-generation of hydrogen peroxide has different applications such as for electro-Fenton application, direct oxidation, disinfection, and nanomaterial based cathodes [15, 16, 17, 18]. Torrades and coworkers reported using of Fenton and photo-Fenton for the treatment of textile wastewater [19].

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