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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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NITRATE REMOVAL FROM GROUND WATER – A REVIEW
NITRATE REMOVAL FROM GROUND WATER – A REVIEW

Aluminum reacted with water as per the following ,equation,: 2A1 + 6H 2O → 2Al(OH) 3 + 3H 2 It was shown that 1.16 g of aluminum was required for the reduction of 1 g ,of nitrate,. Catalytic reduction ,of nitrate, with Pd and/Cu catalysts was another removal technique13. It was found that Pd-Cu combined catalysts at a ratio of 4 can maximize

Treatment and Regeneration of Nano-scale Zero-valent Iron ...
Treatment and Regeneration of Nano-scale Zero-valent Iron ...

Keywords: ,nitrate, removal, nano-scale zero-valent ,iron,, regeneration. 1. Introduction Zero valent ,iron,, especially nano-scale zero-valent ,iron, (nZVI), has shown its high reactivity and active performance in the removal ,of nitrate, via chemical reduction methods. The ZVI reagent can remove ,nitrate, from water through a reduction process illustrated in

Wastewater and Biosolids Analysis Manual
Wastewater and Biosolids Analysis Manual

The example below describes a calibration for ,iron, in the 0 to 2.4 mg/L range. 1. Prepare a series of five or more ,iron, standard solutions that cover the expected range of ,iron, in the sample. Run the procedure with the standards as described in the step-by-step instructions. 2. Pour the customary volume of each standard solution into

The effect of industrial wastewater pollution - Free ...
The effect of industrial wastewater pollution - Free ...

The sulphates as sulphate ,iron, (so42-) XVII. The Nitrates as ,nitrate, nitrogen. XVIII. The silica in water. ... The phosphate content of Ama Brewery ,wastewater, (both ,treated, and untreated) ... (This is a standard ,equation,) Y=The ,iron, content in mg/l. X =Absorbance. From the experiment, ...

Modification of the Radioactive Wastewater Treatment ...
Modification of the Radioactive Wastewater Treatment ...

nitric acid dose, because during the dilution sodium borate dissociated and sodium hydroxide generated [2] according to the following equation: Na + + B(OH ) ⇔ B(OH ) 3 + Na + + OH − Finishing the acid dose we stirred the solution and the crystals for an additional 30 min- utes. Then we filtered the crystals oand dried them at 96 C for 12 hours.

CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD …
CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD …

manganese, and ,nitrate,-plus-nitrite in order to effectively reduce the effluent concentrations by source control measures. The pollution prevention plan must address that for chloroform (chlorine byproducts) and ,nitrate,-plus-nitrite (adherent component of municipal ,wastewater,), source control/pollution prevention measures may not be applicable. 12.

Removal of nitrate from aqueous solutions in batch systems ...
Removal of nitrate from aqueous solutions in batch systems ...

The aim of this research is to facilitate the adsorption ,of nitrate, on perlite ,acid treated, with dilute H 2 SO 4 solutions. The activated perlite with 0.06 N sulfuric ,acid, resulted in a higher efficiency in the removal of NO 3 − from aqueous solutions and was adopted for subsequent investigations. To analyze the process, a significant variable, i.e. removal efficiency (%) ,of nitrate, and ...

USER DATA PACKAGE UDP-2003-ENV MOBILE NITRITE WASTEWATER …
USER DATA PACKAGE UDP-2003-ENV MOBILE NITRITE WASTEWATER …

sulfamic acid to reduce nitrite to nitrogen gas. The overall equation for this chemical reaction is shown as follows (equation I ): NH2SO3H + NaNO2 c> NaHSO4 + H2O * NZ(g) (l) Sulfamic Sodium Monosodium Water Nitrogen Acid Nitrite Sulfate Gas From Equation I it …

Electrochemical technologies for wastewater treatment and ...
Electrochemical technologies for wastewater treatment and ...

Electrochemical nitrate, reduction was investigated on coinage (copper, silver and gold) and transition-metal electrodes (platinum, palladium, rhodium, ruthenium, iridium) at 0.1 M ,nitrate, ions ,in acid, solutions. 333 The conclusion was that the rate-determining step on most of these electrodes was the reduction ,of nitrate, to nitrite, based on the values of the Tafel slope, the kinetic order, and the effect …

Nitrogen and phosphorus removal from wastewater treatment ...
Nitrogen and phosphorus removal from wastewater treatment ...

22/9/2014, · Using artificial ,wastewater,, we previously examined the nitrogen and phosphorus removal in a biological filter reactor packed with ,iron, and wood, and we found that PO 4-P could be removed with this set-up, since ferrous ions were released from the ,iron, by hydrogenotrophic denitrification and combined with phosphate .

The effect of industrial wastewater pollution - Free ...
The effect of industrial wastewater pollution - Free ...

The sulphates as sulphate ,iron, (so42-) XVII. The Nitrates as ,nitrate, nitrogen. XVIII. The silica in water. ... The phosphate content of Ama Brewery ,wastewater, (both ,treated, and untreated) ... (This is a standard ,equation,) Y=The ,iron, content in mg/l. X =Absorbance. From the experiment, ...

Hydrogen Sulfide Corrosion In Wastewater Collection And ...
Hydrogen Sulfide Corrosion In Wastewater Collection And ...

----- electrical components and computer equipment Hydrogen sulfide corrosion can also compromise structural integrity by corroding equipment (bar screens, conveyors, etc.), pipe and equipment supports, ,wastewater, and sludge storage tanks, and guard rails, walkways, and grating at the treatment plant 1.4 Mechanism of Hydrogen Sulfide Corrosion Hydrogen sulfide corrosion may result from two mechanisms: 1) ,acid, …

Wastewater Treatment through Low Cost Adsorption ...
Wastewater Treatment through Low Cost Adsorption ...

7/4/2016, · ,Equation, represents the oxidation of pyrite by oxygen.This reaction generates two moles of ,acid, per mole of oxidised pyrite. Reaction (2) involves the conversion of Fe(II) into Fe(III), reaction that is enhanced by the bacteria Acidithiobacillus ferrooxidans (whenever these microorganisms are present in the system). Reaction (3) represents the hydrolysis of ,iron, with the formation of the ...

Nitrates - Pureflow Filtration
Nitrates - Pureflow Filtration

Even effluents from ,wastewater, treatment plants rarely contain more than a fraction of a milligram per liter of nitrite. EPA has included the nitrite limit with the ,nitrate, one. Thus, the MCL for the combination ,of nitrate, and nitrite is 10 mg/L as N / 45 mg/L as NO3_. ,Nitrate, Removal Processes:

Removal and recovery of nitrate from water by ZnCl ...
Removal and recovery of nitrate from water by ZnCl ...

Nitrate, degradation processes include biological and catalytic ,nitrate, reduction, and separation processes include distillation9, electrodialysis10, ion exchange11, Donnan dialysis12, electro deionization13 and reverse osmosis14. For removal ,of nitrate, from industrial ,wastewater,, adsorption has become one of the most economic and effective method.

Urban Wastewater Treatment by Adsorption of Organic ...
Urban Wastewater Treatment by Adsorption of Organic ...

treated wastewater, contains higher concentrations of suspended and dissolved organic and inorganic matter was ... sodium acetate/chloridric ,acid,, ,iron, oxides by sodium thiosulfate/sodium chloridric and organic materials by hydrogen peroxide ... ,Nitrate,-nitrite (mg/L) 13 …

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