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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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Effluent & Wastewater Treatment | Tarmac Buxton Lime
Effluent & Wastewater Treatment | Tarmac Buxton Lime

Tarmac Buxton Lime offers a range of high purity lime solutions to meet the needs of all types of effluent and wastewater treatment plants. CALBUX QUICKLIME The Calbux range is of consistent high purity and available in a range of reactivities to suit any quicklime reactor or slaking process.

Comprehensive review on wastewater discharged from the ...
Comprehensive review on wastewater discharged from the ...

Characterization of ,limestone, reacted with ,acid,-mine drainage in a pulsed ,limestone, bed ,treatment, system at the Friendship Hill National Historical Site, Pennsylvania, USA Applied Geochemistry 18

Calcium nitrate - Wikipedia
Calcium nitrate - Wikipedia

Calcium nitrate,, also called Norgessalpeter (Norwegian saltpeter), is an inorganic compound with the formula Ca(NO 3) 2.This colourless salt absorbs moisture from the air and is commonly found as a tetrahydrate.It is mainly used as a component in fertilizers but has other applications. Nitrocalcite is the name for a mineral which is a hydrated ,calcium nitrate, that forms as an efflorescence ...

In Situ Treatment of Acid Mine Drainage | Research Project ...
In Situ Treatment of Acid Mine Drainage | Research Project ...

The in situ ,limestone, drain will eliminate the need for a large percentage of the chemical ,treatment, systems that can cost $300,000 per year for operation and maintenance. It is estimated that all in situ ,limestone, drain consisting of 300 tons of ,limestone, can be installed in …

Wastewater Pumped into Tampa Bay Could Harm Marine …
Wastewater Pumped into Tampa Bay Could Harm Marine …

Wastewater, Pumped into Tampa Bay ... have old sewage ,treatment, systems with frequent pipe breaks that ... There have been at least two cases where it ate through the ,limestone, below a ...

In Situ Treatment of Acid Mine Drainage | Research Project ...
In Situ Treatment of Acid Mine Drainage | Research Project ...

The in situ ,limestone, drain will eliminate the need for a large percentage of the chemical ,treatment, systems that can cost $300,000 per year for operation and maintenance. It is estimated that all in situ ,limestone, drain consisting of 300 tons of ,limestone, can be installed in …

Final Report | In Situ Treatment of Acid Mine Drainage ...
Final Report | In Situ Treatment of Acid Mine Drainage ...

The ,limestone, drain cost $10,000 to install and when considering the life of the ,limestone,, the cost per ton ,of acid, load treated is $34. Comparing this to conventional 20% caustic soda ,treatment, which costs $441 per ton ,of acid, load treated, a savings of $407 per ton ,of acid, load treated over conventional methods was achieved.

Water quality for agriculture - Home | Food and ...
Water quality for agriculture - Home | Food and ...

The ,acid, can be added to the system on a continuous basis if the problem is severe enough but this is expensive and difficult and the ,acid, is dangerous to handle. It is recommended that ,acid, be added at a rate to maintain pH close to but not lower than pH 6.5. Sulphur burners have also been used to acidify the supply water for drip irrigation.

Final Report | In Situ Treatment of Acid Mine Drainage ...
Final Report | In Situ Treatment of Acid Mine Drainage ...

The ,limestone, drain cost $10,000 to install and when considering the life of the ,limestone,, the cost per ton ,of acid, load treated is $34. Comparing this to conventional 20% caustic soda ,treatment, which costs $441 per ton ,of acid, load treated, a savings of $407 per ton ,of acid, load treated over conventional methods was achieved.

Treatment of Acid Mine Drainage using Magnesium Hydroxide
Treatment of Acid Mine Drainage using Magnesium Hydroxide

The integrated limestone and lime process was developed for the treatment of acid and sulphate-rich effluents (Maree, 2003). The process consists of various stages. The bulk of the acid content is neutralized in first stage with limestone. CO2 is produced and stripped off through aeration and transported to the third stage.

ASTM C911 - 19 Standard Specification for Quicklime ...
ASTM C911 - 19 Standard Specification for Quicklime ...

Abstract. This specification covers lime and ,limestone, products that are suitable for chemical and industrial uses such as in waste ,acid, neutralization, agricultural liming, soil stabilization, asphalt, flue gas desulfurization, drinking water softening, waste and ,wastewater, neutralization, and ,wastewater treatment, plant residuals stabilization.

Treatment of Acid Sulfate Soil Drainage using Limestone in ...
Treatment of Acid Sulfate Soil Drainage using Limestone in ...

The principles of limestone drain systems that are commonly used to passively remediate acid rock drainage have been adapted and modified for remediation of acidic and metal-rich drainage that is...

Acid mine drainage (AMD) treatment: Neutralization and ...
Acid mine drainage (AMD) treatment: Neutralization and ...

Abstract. Limestones and their modifications from Nordkalk Corporation (Finland) flotation fines (FF) and filter sand (FS) as potential adsorbents for AMD treatment and wastewater purification from Cu, Fe, Zn and Ni ions were studied. Limestones were capable of binding significant amounts of Cu and Fe from synthetic AMD solutions and wastewater, ...

L 10 neutralization - SlideShare
L 10 neutralization - SlideShare

Limestone Treatment, for ,Acid, Wastes Passing ,acid, wastes through beds of ,limestone, was one of the original methods of neutralizing them. The wastes can be pumped up or down through the bed, depending on the headthrough the bed, depending on the head available and the cost involved, at a rate of about 1 gallon/min (gpm) per square foot (ft2) or less.

Groundwater pollution - Wikipedia
Groundwater pollution - Wikipedia

Groundwater pollution, (also called groundwater contamination) occurs when pollutants are released to the ground and make their way down into groundwater.This type of water pollution can also occur naturally due to the presence of a minor and unwanted constituent, contaminant or impurity in the groundwater, in which case it is more likely referred to as contamination rather than pollution.

Acid mine drainage (AMD) treatment: Neutralization and ...
Acid mine drainage (AMD) treatment: Neutralization and ...

Abstract Limestones and their modifications from Nordkalk Corporation (Finland) flotation fines (FF) and filter sand (FS) as potential adsorbents for AMD ,treatment, and ,wastewater, purification from Cu, Fe, Zn and Ni ions were studied. Limestones were capable of binding significant amounts of Cu and Fe from synthetic AMD solutions and ,wastewater,, while unmodified limestones were not good for Zn ...

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