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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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acidic gas field fracturing flow-back fluids recycle centers
Mine drainage: Treatment technologies and rare earth ...
Mine drainage: Treatment technologies and rare earth ...

An expanded granular sludge bed reactor was studied for the treatment of synthetic AMD, where ,wastewater, sludge fermentation centrate was used as the substrate (Liu, Li, Li, & Tian, 2018). At pH 3.0, good removal of sulfate, COD, and heavy metals was achieved, indicating synchronous treatment of residual ,wastewater, sludge and AMD. Passive treatment

Bench-Scale and Pilot-Scale Treatment Technologies for the ...
Bench-Scale and Pilot-Scale Treatment Technologies for the ...

29/7/2015, · Abstract. ,Coal mine, water (CMW) is typically treated to remove suspended solids, acidity, and soluble metals, but high concentrations of total dissolved solids (TDS) have been reported to impact the environment at several CMW discharge points.

Interactive Relationship between Cementitious Materials ...
Interactive Relationship between Cementitious Materials ...

successful application in water treatment. Portland cement CEM I 52.5R (CEM I), ,coal, fly ash (FA), natural zeolite and ground granulated blast-furnace ,slag, (GGBS) were evaluated as adsorbents for removal of Cr(VI) from ,acid mine, drainage (AMD). Adsorption experiments were conducted at

Presentations tagged with Treatment - Metal Leaching Acid ...
Presentations tagged with Treatment - Metal Leaching Acid ...

A New Technology for the ,Treatment of Acid Mine, Drainage. Presented at the 2002 workshop. KEYWORDS: aeration ferric lignosulphonate lime NaOH proprietory ,treatment,. Ayres B., L. Lanteigne and M. O'Kane. A Review of Performance of the Whistle ,Mine, Backfilled Pit Cover System - Four Years After Construction.

CN105236783A - Barium sulfate waste residue comprehensive ...
CN105236783A - Barium sulfate waste residue comprehensive ...

The invention discloses a new process aiming at recycling ,treatment, and comprehensive utilization of ,barium, sulfate waste residues, and is suitable for all ,barium, salt production manufacturing industries. The process has the main innovations that sintered ores and symbionts in the waste residues produced from production of ,barium, sulfate are stripped for the first time, the waste residues are ...

‪Frans Waanders‬ - ‪Google Scholar‬
‪Frans Waanders‬ - ‪Google Scholar‬

Treatment of acid, leachate from ,coal, discard using calcium carbonate and biological sulphate removal JP Maree, G Strobos, H Greben, E Netshidaulu, E Steyn, A Christie, ... ,Mine, Water and the Environment 23 (3), 144-151 , 2004

Chapter 7 - GARDGuide
Chapter 7 - GARDGuide

9/6/2012, · In situ ,treatment, of acidic ,mine, water by injection of alkaline lime slurry to disturbed ,mine, land, spoils, and mining waste has met with mixed success for ,mine, drainage. The challenges to practical ,mine,-scale applications include the following:

Consequences of acid mine drainage for the structure and ...
Consequences of acid mine drainage for the structure and ...

Vhahangwele Masindi Integrated ,treatment of acid mine, drainage using cryptocrystalline magnesite and ,barium, chloride, Water Practice and Technology 12, no.3 3 (Aug 2017): 727-736.

Interactive Relationship between Cementitious Materials ...
Interactive Relationship between Cementitious Materials ...

successful application in water ,treatment,. Portland cement CEM I 52.5R (CEM I), ,coal, fly ash (FA), natural zeolite and ground granulated blast-furnace ,slag, (GGBS) were evaluated as adsorbents for removal of Cr(VI) from ,acid mine, drainage (AMD). Adsorption experiments were conducted at

Acid mine drainage: Prevention treatment options and ...
Acid mine drainage: Prevention treatment options and ...

Active chemical treatment by, neutralization, has been widely applied by, the coal, mining industry to prevent, the, damages caused by, acid mine, drainage. The process involves the addition of alkaline...

Sulphide precipitation – Mine Closure
Sulphide precipitation – Mine Closure

While ,sulphide precipitation, is not a conventional method in ,mine, water ,treatment,, it has been widely used in the ,treatment, of waste waters from metal finishing industry. ,Sulphide precipitation, is beneficial especially when water contains phosphate, ammonia, organics, surfactants, chelators and Cr6+.

Aerobic constructed wetlands – Mine Closure
Aerobic constructed wetlands – Mine Closure

Constructed aerobic wetlands are based on aeration of the water to be treated, resulting in the transmformaiton of dissolved Fe to the solid phase via oxidation. Thus, aerobic wetland ,treatment, is very effective in treating Iron-rich ,mine, waters, yet they have commonly limited capability to neutralize acidity.

Acid mine drainage from coal mining in the United States ...
Acid mine drainage from coal mining in the United States ...

1/9/2020, · Abstract. Water discharged from active, abandoned and/or reclaimed ,coal mine, sites with relatively higher acidity continues to be a global concern due to variable impacts on the quality of surface water and groundwater. Treatment of such ,acid mine, drainage (AMD) is …

(PDF) The Passive Treatment of Coal Mine Drainage | Robert ...
(PDF) The Passive Treatment of Coal Mine Drainage | Robert ...

The Passive Treatment ,of Coal Mine, Drainage. 1994. Robert Nairn

Consequences of acid mine drainage for the structure and ...
Consequences of acid mine drainage for the structure and ...

Vhahangwele Masindi Integrated ,treatment of acid mine, drainage using cryptocrystalline magnesite and ,barium, chloride, Water Practice and Technology 12, no.3 3 (Aug 2017): 727–736. https://doi.org/10.2166/wpt.2017.074

Consequences of acid mine drainage for the structure and ...
Consequences of acid mine drainage for the structure and ...

Vhahangwele Masindi Integrated ,treatment of acid mine, drainage using cryptocrystalline magnesite and ,barium, chloride, Water Practice and Technology 12, no.3 3 (Aug 2017): 727–736. https://doi.org/10.2166/wpt.2017.074

Consequences of acid mine drainage for the structure and ...
Consequences of acid mine drainage for the structure and ...

Streams affected by ,acid mine, drainage (AMD) are highly stressed ecosystems and occur worldwide. These streams typically have low pH, high concentrations of dissolved metals, and substrata coated with metal hydroxide precipitates. This combination of chemical and physical stressors creates a challenging environment for aquatic biota.

Minerals | Free Full-Text | Interactive Relationship ...
Minerals | Free Full-Text | Interactive Relationship ...

Elevated hexavalent chromium (Cr(VI)) levels in pervious concrete may undermine its successful application in water ,treatment,. Portland cement CEM I 52.5R (CEM I), ,coal, fly ash (FA), natural zeolite and ground granulated blast-furnace ,slag, (GGBS) were evaluated as adsorbents for removal of Cr(VI) from ,acid mine, drainage (AMD).

Chapter 7 - GARDGuide
Chapter 7 - GARDGuide

9/6/2012, · In situ treatment of acidic ,mine, water by injection of alkaline lime slurry to disturbed ,mine, land, spoils, and mining waste has met with mixed success for ,mine, drainage. The challenges to practical ,mine,-scale applications include the following:

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