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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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Recovery and reuse of sludge from active and passive ...
Recovery and reuse of sludge from active and passive ...

Abstract. The ,treatment of mine drainage-impacted waters, generates considerable amounts of sludge, which raises several concerns, such as storage and disposal, stability, and potential social and environmental impacts. To alleviate the storage and management costs, as well as to give the ,mine, sludge a second life, ,recovery, and reuse have recently ...

Extraction and recovery of lithium | Industrial wastewater ...
Extraction and recovery of lithium | Industrial wastewater ...

In this process phosphoric ,acid, is recovered by treatment of hydroxyapatite with sulfuric ,acid,, with formation of hydrated calcium sulphate (gypsum) that has applications for construction: Ca 5 (PO 4 ) 3 .OH + 5H 2 SO 4 → 5CaSO 4 .2H 2 O + H 3 PO 4

Bioprecipitation-a promising technique for heavy metal ...
Bioprecipitation-a promising technique for heavy metal ...

exhausted in a few decade. Metal recovery from waste (liquid) streams, for example - acid mine drainage, is one classical option to achieve sustainable resource utilization. Bioprecipitation is a novel approach to recover metals with the help of biologically produced sulfide in suitable bioreactor configurations. Using this technique, stable metal

Bioprecipitation-a promising technique for heavy metal ...
Bioprecipitation-a promising technique for heavy metal ...

exhausted in a few decade. Metal ,recovery, from waste (liquid) streams, for example - ,acid mine, drainage, is one classical option to achieve sustainable resource ,utilization,. Bioprecipitation is a novel approach to recover metals with the help of biologically produced sulfide in suitable bioreactor configurations. Using this technique, stable metal

Study on Treatment and Recovery of Heavy Metals from Mine ...
Study on Treatment and Recovery of Heavy Metals from Mine ...

The ,acid wastewater, containing a variety of heavy metal ions is very polluted to the environment. It has the characteristics of large amount of water, many pollution indexes and so on, and the cost of ,wastewater, treatment is high. In this paper, the recycling technology of various heavy metals in the process of ,wastewater, treatment was studied.

Water and Wastewater Management in Local Government: Final ...
Water and Wastewater Management in Local Government: Final ...

Wastewater, treatment has experienced many challenges in the recent years. ... ,acid mine, drainage. The ,recovery, of sulphuric ,acid, process will be integrated with adsorption ... ,utilization, in the power station has a direct impact on the amount of waste produced, ...

Wastewater and Sludge | Liquid Lime | The Artesia Companies
Wastewater and Sludge | Liquid Lime | The Artesia Companies

Neutralization may be used to treat acid wastewaters containing metals. Adding an alkaline reagent increases the pH of the acid waste. This forms a precipitate that collects unwanted metals. The result is an incoming solution of which the pH has been adjusted to the optimum range for precipitating metals as …

Sludge Recycle and Reuse in Acid Mine Drainage Treatment
Sludge Recycle and Reuse in Acid Mine Drainage Treatment

from ,wastewater,. By recycling the sludge produced in ,mine, drainage neutralization, lime requirements for the process can be reduced by 30%. A synthetic ,acid mine, drainage was prepared for use in Phase 1. Its composition, typical of an unoxidized, high ferrous iron AMD, is given in Table 1. For the purpose 278 Journal WPCF, Volume 55, Number 3

(PDF) Recovery of calcium carbonate from waste gypsum and ...
(PDF) Recovery of calcium carbonate from waste gypsum and ...

Recovery of calcium carbonate from waste gypsum and utilization for remediation of acid mine, drainage from coal mines. July 2012. Water Science & Technology 66 (6):1296-300. DOI: 10.2166/wst.2012.322.

Sludge Recycle and Reuse in Acid Mine Drainage Treatment
Sludge Recycle and Reuse in Acid Mine Drainage Treatment

from ,wastewater,. By recycling the sludge produced in ,mine, drainage neutralization, lime requirements for the process can be reduced by 30%. A synthetic ,acid mine, drainage was prepared for use in Phase 1. Its composition, typical of an unoxidized, high ferrous iron AMD, is given in Table 1. For the purpose 278 Journal WPCF, Volume 55, Number 3

Bioprecipitation-A Promising Technique for Heavy Metal ...
Bioprecipitation-A Promising Technique for Heavy Metal ...

Metal recovery from waste (liquid) streams, for example - acid mine drainage, is one classical option to achieve sustainable resource utilization. Bioprecipitation is a novel approach to recover metals with the help of biologically produced sulfide in suitable bioreactor configurations.

Future aspects of mine water treatment – Mine Closure
Future aspects of mine water treatment – Mine Closure

Its ,utilization, in water ,recovery, as well as ,acid, and metal concentration has been recently demonstrated for mining ,wastewater,. Sulphuric ,acid, as well as clean water from ,mine, water with high sulphate concentration can be recovered also by electrodialysis. However, this process has not been demonstrated on a large scale. (Simate & Ndlovu 2014)

Recovery of Byproducts from Acid Mine Drainage Treatment ...
Recovery of Byproducts from Acid Mine Drainage Treatment ...

5 Technologies that can be Used for the Treatment of ,Wastewater, and Brine for the ,Recovery, of Drinking Water and Saleable Products 99 Tumelo Monty Mogashane, Johannes Philippus Maree, Munyaradzi Mujuru and Mabel Mamasegare Mphahlele-Makgwane. 5.1 Introduction 100. 5.1.1 Formation ,of Acid Mine, Water 100. 5.1.2 Water Volumes 100. 5.1.3 Legislation 101

Neutralization and Attenuation of Metal Species in Acid ...
Neutralization and Attenuation of Metal Species in Acid ...

underground ,mine, workings. Of major concern is huge volume of acidic water (,acid mine, drainage-AMD) which is generated in active and old abandoned mines underground workings. This water requires treatment to DWA/DWAF (1996) set guidelines. Several technologies have been advanced for treatment of AMD. These are, limestone and lime

WT37-Removal of Mn(II) from the Acid Mine Wastewaters ...
WT37-Removal of Mn(II) from the Acid Mine Wastewaters ...

Acid mine wastewater, (AMW), the ,wastewater, from mining activities which has low pH about 3-5 and contains hazardous heavy metals such as Cu, Fe, Mn, Zn, Pb, etc. Those heavy metals pollution is of prime concern from the environmental view point. Among the heavy metals, Mn occupies the third position in the AMW from one the iron ore mining ...

Environmental Materials and Waste - 1st Edition
Environmental Materials and Waste - 1st Edition

Chapter 17: ,Acid Mine, Drainages from Abandoned Mines: Hydrochemistry, Environmental Impact, Resource ,Recovery, and Prevention of Pollution. Chapter 18: Restoration of Smelter Industrial Barrens through Pollution Reduction Drives Economic ,Recovery,. Chapter 19: Methods for ,utilization, of red mud and its management

Extraction and recovery of lithium | Industrial wastewater ...
Extraction and recovery of lithium | Industrial wastewater ...

In this process phosphoric ,acid, is recovered by treatment of hydroxyapatite with sulfuric ,acid,, with formation of hydrated calcium sulphate (gypsum) that has applications for construction: Ca 5 (PO 4 ) 3 .OH + 5H 2 SO 4 → 5CaSO 4 .2H 2 O + H 3 PO 4

Review on biological wastewater treatment and resources ...
Review on biological wastewater treatment and resources ...

During wastewater treatment, a parallel focus is on utilization of effluent sludge, particularly exploring recovery of nutrients, which are present in far higher concentrations compared …

Review on biological wastewater treatment and resources ...
Review on biological wastewater treatment and resources ...

Anaerobic biological treatment of acid mine drainage from abandoned mines using SRB has shown nearly 99.2% effective removal of copper, zinc, and nickel (Sierra-Alvarez et al. 2006). The use of suspended biological methods for bioremediation of wastewater and resources recovery is an eco-friendly and cost-efficient way.

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