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Backflow standard of fracturing fluid for deep sand control

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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Backflow standard of fracturing fluid for deep sand control
Treatment of chromium-containing wastewater by room ...
Treatment of chromium-containing wastewater by room ...

Chromium-containing ,wastewater, was treated at normal temperatures with ,ferrite, process in this study. The influences of ferrous salts,ammonia nitrogen and COD on the ,treatment, efficiency were explored.Furthermore,the precipitate was analyzed with the chemical method and XRD. The experiments indicated that the best ,treatment, effectiveness was achieved under the following conditions: n( Fe2 ...

Degradation of FBL Dye Wastewater by Magnetic ...
Degradation of FBL Dye Wastewater by Magnetic ...

Magnetic photocatalyst solves the separation problem between ,wastewater, and TiO 2 ,photocatalysts, by the application of magnetic field. This research investigates the ,treatment, of simulated FBL dye ,wastewater, using Mn-Zn ,ferrite,/TiO 2 magnetic photocatalyst. The magnetic Mn-Zn ,ferrite, powder was first produced by a chemical coprecipitation method from spent dry batteries and spent pickling ,acid, ...

Technologies for Recovering Nutrients from Wastewater: A ...
Technologies for Recovering Nutrients from Wastewater: A ...

9/5/2019, · Phosphorus recovery. Williams et al. indicate that ∼15% of phosphate fertilizer demand can be satisfied by recovering phosphates from ,wastewater treatment, plants.Only 2% and 6% of foodborne nitrogen (N) and phosphorus (P), respectively, are retained in the body during human growth, and there is no net retention once the body is fully grown (Jönsson et al., 2004).

Ferrite formation from photo-Fenton treated wastewater.
Ferrite formation from photo-Fenton treated wastewater.

When photo-Fenton was employed as a pre-,treatment, step so that residual oxalic ,acid, remained, ,ferrite, formation was not inhibited. The presence of oxalates oxalates Subject Category: Chemicals and Chemical Groups see more details even allowed ferrites to form in a solution containing Ca 2+ ions, which is well-known to be deterrent to the process

Polysilicate Aluminum Ferrite Coagulant Dyeing Wastewater ...
Polysilicate Aluminum Ferrite Coagulant Dyeing Wastewater ...

Fly ash, sodium carbonate, potassium hydrochloric ,acid, solution and high-speed rail are the main raw material, prepared polysilicate aluminum ,ferrite, coagulant (PSAF) and used for dyeing ,wastewater treatment, simulation.

Technologies for Recovering Nutrients from Wastewater: A ...
Technologies for Recovering Nutrients from Wastewater: A ...

9/5/2019, · Phosphorus recovery. Williams et al. indicate that ∼15% of phosphate fertilizer demand can be satisfied by recovering phosphates from ,wastewater treatment, plants.Only 2% and 6% of foodborne nitrogen (N) and phosphorus (P), respectively, are retained in the body during human growth, and there is no net retention once the body is fully grown (Jönsson et al., 2004).

CN101863516A - Method for recovering ferrite containing ...
CN101863516A - Method for recovering ferrite containing ...

The invention discloses a waste water treatment method, in particular to a treatment method of stainless steel waste water. The method comprises the following steps of: pulping; acid leaching:...

Treatment of chromium-containing wastewater by room ...
Treatment of chromium-containing wastewater by room ...

Chromium-containing ,wastewater, was treated at normal temperatures with ,ferrite, process in this study. The influences of ferrous salts,ammonia nitrogen and COD on the ,treatment, efficiency were explored.Furthermore,the precipitate was analyzed with the chemical method and XRD. The experiments indicated that the best ,treatment, effectiveness was achieved under the following conditions: n( Fe2 ...

One-Step Ambient Temperature Ferrite Process for Treatment ...
One-Step Ambient Temperature Ferrite Process for Treatment ...

One-,Step Ambient Temperature Ferrite Process for Treatment of Acid, Mine Drainage Waters ... (VI) in Two Cathodes and One Anode Cell: Enhanced Efficiency and ,Treatment, of Thiocyanate in ,Wastewater,. Journal of Environmental Engineering August 2018 . Show more Show less ...

Biological struvite crystal formation in sludge dewatering ...
Biological struvite crystal formation in sludge dewatering ...

ferrite, adsorbent by high gradient magnetic separation. 3rd International Workshop on Materials Analysis and Processing in ... used ends up in the ,wastewater treatment, plants - just in England is estimated that 42,000 tons/year of P end up in the ... in the first case by pH correction with ,acid, (pH corrected); in

One-step ambient temperature ferrite process for treatment ...
One-step ambient temperature ferrite process for treatment ...

One-step ambient temperature ,ferrite, process for ,treatment of acid, mine drainage waters. Ori Lahav, Barak E. Morgan *, Giovanni Hearne, Richard E. Loewenthal * Corresponding author for this work. Research output: Contribution to journal › Article › peer-review. 9 Scopus citations.

Polysilicate Aluminum Ferrite Coagulant Dyeing Wastewater ...
Polysilicate Aluminum Ferrite Coagulant Dyeing Wastewater ...

Fly ash, sodium carbonate, potassium hydrochloric ,acid, solution and high-speed rail are the main raw material, prepared polysilicate aluminum ,ferrite, coagulant (PSAF) and used for dyeing ,wastewater treatment, simulation.

[PDF] Advances in Seeded Ambient Temperature Ferrite ...
[PDF] Advances in Seeded Ambient Temperature Ferrite ...

Advances in the seeded ambient temperature ,ferrite, process for ,treatment of acid, mine drainage (AMD) are described. Magnetite formation requires that the oxidation rate of ferrous to ferric does not exceed the rate at which ferrous iron is incorporated into the crystal structure (dehydroxylation-crystallization). If the oxidation rate is too high, then ferric-only oxides form, an effect ...

Treatment of Acid Mine Drainage with Fly Ash: Removal of ...
Treatment of Acid Mine Drainage with Fly Ash: Removal of ...

Several techniques have been developed for the ,treatment of acid, mine drainage which include lime neutralization [5], limestone neutralization [6], biological sulphate removal [7], biological metal removal [8] and ,ferrite, process [9, 10] for heavy metal removal. The principles and methods behind the passive and active ,treatment, of AMD are well

One-Step Ambient Temperature Ferrite Process for Treatment ...
One-Step Ambient Temperature Ferrite Process for Treatment ...

One-,Step Ambient Temperature Ferrite Process for Treatment of Acid, Mine Drainage Waters ... (VI) in Two Cathodes and One Anode Cell: Enhanced Efficiency and ,Treatment, of Thiocyanate in ,Wastewater,. Journal of Environmental Engineering August 2018 . Show more Show less ...

Effects of Carboxylic Acids on Treatment of Wastewater ...
Effects of Carboxylic Acids on Treatment of Wastewater ...

The saturated magnetization (?D) of the ferrite sludge formed by ferrite processtreatment of wastewater containing heavy metal (nickel sulfate) and carboxylic acidswas measured over a wide concentration range of carboxylic acids.

Degradation of FBL Dye Wastewater by Magnetic ...
Degradation of FBL Dye Wastewater by Magnetic ...

Magnetic photocatalyst solves the separation problem between ,wastewater, and TiO 2 ,photocatalysts, by the application of magnetic field. This research investigates the ,treatment, of simulated FBL dye ,wastewater, using Mn-Zn ,ferrite,/TiO 2 magnetic photocatalyst. The magnetic Mn-Zn ,ferrite, powder was first produced by a chemical coprecipitation method from spent dry batteries and spent pickling ,acid, ...

Biological struvite crystal formation in sludge dewatering ...
Biological struvite crystal formation in sludge dewatering ...

ferrite, adsorbent by high gradient magnetic separation. 3rd International Workshop on Materials Analysis and Processing in ... used ends up in the ,wastewater treatment, plants - just in England is estimated that 42,000 tons/year of P end up in the ... in the first case by pH correction with ,acid, (pH corrected); in

US5244580A - Method of removal and recovery of oil and ...
US5244580A - Method of removal and recovery of oil and ...

The ferrite powders are individually recovered for re-use. There is disclosed a method of removal and recovery of oil and grease from wastewater wherein ferrite powders are used to adsorb the oil...

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