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Acid wastewater treatment equipment

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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Acid wastewater treatment equipment
Treatment of leather industrial wastewater via combined ...
Treatment of leather industrial wastewater via combined ...

The present extensive study deals with the treatment of leather lime/unhair ,wastewater, using the integration of Fenton reaction followed by membrane filtration. Bench-scale jar-test experiments were employed to determine the effect of the Fenton reaction. The optimum dose of hydrogen peroxide in combination with ,ferrous sulfate, was determined.

Performance Study of Chromium (VI) Removal in Presence of ...
Performance Study of Chromium (VI) Removal in Presence of ...

Several studies have been carried out for removal of ,chromium, (VI) using microorganisms ,under, laboratory ,condition, [15–20]. In all cases, ,chromium, (VI) had been used as the only stress factor in the growth media. Numerous tanneries are located in and around Kolkata whose effluents contain both ,chromium, (VI) and phenol .

Study on the influence mechanism of underground mineral ...
Study on the influence mechanism of underground mineral ...

15/4/2020, · Based on the change of oxygen content in surface water and groundwater environment, this research mainly studied the influencing factors and mechanism of underground mineral element Fe(II) on the morphological transformation of heavy metal Cr(VI) ,under, the ,condition, of surface–groundwater interaction, and simulates the interaction process of subsurface–groundwater by changing the …

Treatment of oilfield wastewater by combined process of ...
Treatment of oilfield wastewater by combined process of ...

All these operations were carried with 800 rpm agitation speed to provide rapid mixing of reagents. In the case of experiments at ,acidic, conditions, Fe 2+ was oxidized by H 2 O 2 to ferric ion by dissolved oxygen. After the desired duration of oxidation, calcium oxide was added to adjust the pH to 8.0–9.0.

Selenium removal from waste waters by chemical reduction ...
Selenium removal from waste waters by chemical reduction ...

In this study, the fundamental and practical aspects of the selenate reduction by chromous ions as a novel method to remove selenate from waste waters was investigated mainly in ,sulfate, media. At first, the stoichiometry of selenate reduction by chromous ions was studied.

CLU-IN | Technologies > Remediation > About Remediation ...
CLU-IN | Technologies > Remediation > About Remediation ...

Co-injection ,of ferrous sulfate, with a biostimulant can also be employed to ensure a proper level of ,sulfate, and reduced iron. This technique was approved for use of deep soil vadose zone cleanup at the Track Four and Merck & Co. hexavalent ,chromium, site in Merced County, CA (Houston et al. 2010 and California Central Valley Regional Water Quality Control Board 2011).

Recent advances and prospects of catalytic advanced ...
Recent advances and prospects of catalytic advanced ...

This process generates ·OH through the reaction of H 2 O 2 and ,ferrous, salt in ,acidic, environment. The use of Fenton processes for treating various types of ,wastewater, has also been studied (Bauer et al. 1993, Perkowski et al. 2000, Modenes et al. 2012, Tony et al. 2012, Borba et al. 2013).

Visible Light Assisted Photocatalytic Degradation of ...
Visible Light Assisted Photocatalytic Degradation of ...

The outcome of the photocatalytic removal of the ,chromium, (VI) below the visible light irradiation confirmed that 82.11% of Cr (VI) was degraded by the Fe 2 O 3 nanomaterials at 120 min of irradiation time. The improved photocatalytic activity of the nanoparticle was ascribed to …

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

Kongjao et al. determined that ,chromium, and pollutants could be removed within 95% by considering tannery ,wastewater, with a one-step electrocoagulation process. Additional parameters included a pH between 7 and 9, current density of 22.4 A/m 2 , flow of 3.67 L/min, and 20 minute electrolysis time.

Performance Study of Chromium (VI) Removal in Presence of ...
Performance Study of Chromium (VI) Removal in Presence of ...

The present study looked at removal of ,chromium, (VI) in presence of phenol in a counter-current continuous packed bed reactor packed with E. coli cells immobilized on clay chips. The cells removed 85% of 500 mg/L of ,chromium, (VI) from MS media containing glucose. Glucose was then replaced by 500 mg/L phenol.

Visible Light Assisted Photocatalytic Degradation of ...
Visible Light Assisted Photocatalytic Degradation of ...

The outcome of the photocatalytic removal of the ,chromium, (VI) below the visible light irradiation confirmed that 82.11% of Cr (VI) was degraded by the Fe 2 O 3 nanomaterials at 120 min of irradiation time. The improved photocatalytic activity of the nanoparticle was ascribed to …

(PDF) Electrocoagulation in Wastewater Treatment | Erick ...
(PDF) Electrocoagulation in Wastewater Treatment | Erick ...

Maghana et al. concluded that BOD, COD, and conductivity were capable of being removed by electrocoagulation within tea effluent. Using effluent from the Chemomi tea factory in Rift Valley, Kenya, the authors were capable to reduce COD by 96.6%, BOD by 84.0%, and conductivity by 31.5% and increase pH by 10.32%.

Zeitschrift für Physikalische Chemie Ahead of Print / Just ...
Zeitschrift für Physikalische Chemie Ahead of Print / Just ...

Wastewater, treatment coagulation is one of the most important physicochemical operations used in industry. The adsorption capability of marigold leaf powder, tea waste and ,ferrous sulfate, was investigated for domestic and tannery effluents. These adsorbents significantly affected the pH, electrical conductivity (EC) and turbidity of ,wastewater,.

Treatment of oilfield wastewater by combined process of ...
Treatment of oilfield wastewater by combined process of ...

All these operations were carried with 800 rpm agitation speed to provide rapid mixing of reagents. In the case of experiments at ,acidic, conditions, Fe 2+ was oxidized by H 2 O 2 to ferric ion by dissolved oxygen. After the desired duration of oxidation, calcium oxide was added to adjust the pH to 8.0–9.0.

Theory and practice of water and wastewater treatment ...
Theory and practice of water and wastewater treatment ...

Backwash Velocity 401 Method 1 401 Method 2 402 Headloss and Expansion in a Stratified Bed 405 14.5 Support Media and Underdrains in Rapid Filters 409 Other Design Features of Filters 411 Auxiliary Wash and Air Scour Systems 411 14.6 Filter Beds for Water and ,Wastewater, Treatment 412 14.7 Air Binding of Filters 415 14.8 Rapid Filtration Alternatives 417 14.8.1 Single-medium and Multimedia ...

Performance study of chromium (VI) removal in presence of ...
Performance study of chromium (VI) removal in presence of ...

29/8/2013, · The present study looked at removal of ,chromium, (VI) in presence of phenol in a counter-current continuous packed bed reactor packed with E. coli cells immobilized on clay chips. The cells removed 85% of 500 mg/L of ,chromium, (VI) from MS media containing glucose. Glucose was then replaced by 500 mg/L phenol.

Study on the influence mechanism of underground mineral ...
Study on the influence mechanism of underground mineral ...

15/4/2020, · Based on the change of oxygen content in surface water and groundwater environment, this research mainly studied the influencing factors and mechanism of underground mineral element Fe(II) on the morphological transformation of heavy metal Cr(VI) ,under, the ,condition, of surface–groundwater interaction, and simulates the interaction process of subsurface–groundwater by changing the …

Handbook of water and wastewater treatment technology ...
Handbook of water and wastewater treatment technology ...

Very small amounts of manganese— 0.2-0.3 ppm— may form heavy incrustations in piping, whereas even smaller amounts may form noticeable black deposits. In acid mine waters, manganous ,sulfate, is frequently found with the ,ferrous sulfate,. In colored surface waters, manganese, like iron, may be present in an organic or colloidal form.

Effects on Effluent Quality of Industrial Waste Water ...
Effects on Effluent Quality of Industrial Waste Water ...

was taken for ,determination, of transitivity and chemical oxygen demand (COD) tests. The coagulants used included aluminum ,sulfate,, ferric ,sulfate,, lime, and ferric chloride with wide dosages range up to 250 mg/l. The best transmittance of treated ,wastewater, was 100% with the use of alum and ferric chloride coagulant.

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