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Dingbian fracturing flowback fluid treatment station

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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Dingbian fracturing flowback fluid treatment station
Biosorption of chromium(VI) from aqueous solution and ...
Biosorption of chromium(VI) from aqueous solution and ...

1/2/2008, · Sorption of Cr(VI) from ,electroplating, wastewaterThe results of percent removal of Cr(VI) by 71.18 ± 2.86% with A. niger, 65.32 ± 2.10% with A. sydoni and 62.59 ± 1.34% with P. janthinellum. ,There, is some what less adsorption occurred ,in the wastewater, sample as compared to synthetic sample.

Removal of Hexavalent Chromium by using Citric Acid Modified
Removal of Hexavalent Chromium by using Citric Acid Modified

solution, was adjusted with the help of dilute hydrochloric ,acid, and sodium hydroxide. Preparation of Chromium (VI) ,solution,: The stock ,solution, of 1000 ppm of chromium (VI) was prepared by dissolving 0.7072 g of ,potassium dichromate, (K 2 Cr 2 O 7) (AR grade) (previously dried at

Fundamental Concepts in Environmental Engineering
Fundamental Concepts in Environmental Engineering

Concentration Units ¾Liquids zmost common - ,mass, of substance per unit volume of mixture, e.g. mg/L, μg/L, g/m33 zalternatively - ,mass, of substance per ,mass, of mixture, e.g. ppm or ppb zoccasionally - molar concentrations, e.g. moles/liter (M) or equivalents/liter (N) ¾Solids zmass ratios (µg/kg) zweight percent (e.g., “4% by weight” means that 4 parts out of

Treatment of sulfuric acid leaching solution of nickel ...
Treatment of sulfuric acid leaching solution of nickel ...

In order to decontaminate the nickel ,wastewater, and to recycle the ions,a type of sulfate-reducing bacteria was isolated and purified from activated sludge,and the bacteria were immobilized by intact rice chaff in an up-flow anaerobic bed reactor.Tests were conducted for the enhanced treatment of metal ions and the bearing capability of higher ions in the ,wastewater,.Meanwhile the removal rate ...

Care must be taken when diluting sulfuric acid with water ...
Care must be taken when diluting sulfuric acid with water ...

What is the mole ,fraction of sulfuric acid, in a solution made by adding 3.4 grams ,of sulfuric acid, to 3500 mL of water? Chemistry The ,wastewater, solution from a factory containing high levels of salts needs to be diluted before it can be released into the environment.

3283 PDFs | Review articles in POTASSIUM DICHROMATE
3283 PDFs | Review articles in POTASSIUM DICHROMATE

Chromic ,acid, (H2Cr2O7), dipotassium salt. A compound having bright orange-red crystals and used in dyeing, staining, tanning leather, as bleach,... | Explore the latest full-text research PDFs ...

Integration of wastewater treatment into process design of ...
Integration of wastewater treatment into process design of ...

3/2/2020, · Briefly, 0.2 g of finely ground, oven-dried sample was treated with 3 mL 72% ,sulfuric acid, (H 2 SO 4) for 2 h at room temperature, then diluted into 120 mL total volume and autoclaved at 121 °C for 60 min. Klason lignin contents were determined by gravimetric methods by …

(PDF) ADSORPTION PROCESS FOR WASTEWATER TREATMENT …
(PDF) ADSORPTION PROCESS FOR WASTEWATER TREATMENT …

Under the pH ( 3), temperature (20-30oC) and reducing - oxidizing conditions commonly found in industrial wastewaters, the predominant species are bicarbonate, HCrO -4, ,dichromate, Cr2O7-2 and Cr+3. It is interesting to note that the divalent chromium ions, Cr+2, may be …

Comparative Studies of Removal of Hexavalent Chromium Cr ...
Comparative Studies of Removal of Hexavalent Chromium Cr ...

dissolving 2.282 g of 99% ,potassium dichromate, in one liter of distilled water to prepare 1000 mg/L of chromium stock ,solution,. From the stock ,solution,, different initial concentrations of 50, 100, 200, 300, 400 and 500 mg/L were prepared by dilution. Solutions of 0.1 N sodium hydroxide (NaOH) and 0.1 N sulfuric ,acid, (H 2 SO 4) were used for pH

Adsorption of Cr(VI) from Aqueous Solution onto a ...
Adsorption of Cr(VI) from Aqueous Solution onto a ...

ºC for 24 h. Then this carbon was washed to get it ,acid, free and its pH was checked. The carbonized adsorbents were dried and rewashed many times until its pH reaches 7. After this the activated carbon was deacidified by use of distilled water and sodium bicarbonate ,solution, in later stages. Deacidification was done in following manner.

Treatment of purified terephthalic acid wastewater using a ...
Treatment of purified terephthalic acid wastewater using a ...

Purified terephthalic acid, (PTA) plant of a petrochemical unit generates ,wastewater, having high pollution load. ,Acid, treatment of this ,wastewater, reduces the chemical oxygen demand (COD) load by more than 50%, still leaving substantial COD load (>1500 mg/L) which should be removed. The present study reports on the use of a bio-waste-adsorbent bagasse fly ash (BFA) for the reduction of COD and ...

Succinic acid production derived from carbohydrates: An ...
Succinic acid production derived from carbohydrates: An ...

Today, the world market volume of succinic ,acid, is relatively small at 15 000 tonnes per year. 7 Succinic ,acid, for industrial use is predominantly petrochemically produced from butane through catalytic hydrogenation of maleic ,acid, or maleic anhydride (MAn). 1, 7 However, starting from high‐value applications, bio‐based succinic ,acid, has the potential to gradually become a key building ...

Do You Need to Remove Chromium from Your Industrial Water ...
Do You Need to Remove Chromium from Your Industrial Water ...

The chemical industry is another significant consumer of chromium with its use of compounds such as chrome oxide, chromic ,acid,, and ,potassium dichromate, as catalysts and reagents to support a variety of production processes. Various other chromium compounds are important for producing goods and materials across other industries as well.

(PDF) Biosorption of Chromium (VI) From Aqueous Solution ...
(PDF) Biosorption of Chromium (VI) From Aqueous Solution ...

1/2/2008, · ,wastewater, was observed less than form aqueous ,solution,, i.e. 71.18 ± 2.86% with A. niger , 65.32 ± 2.10% with A. sydoni and 62.59 ± 1.34% with P . janthinellum at optimum biosorbent dose

chemistry question help is appreciated? | Yahoo Answers
chemistry question help is appreciated? | Yahoo Answers

25/8/2008, · a chemical plant that manufactures ,sulfuric acid, produces 545L of ,wastewater, per day that contain 1.25g/L ,of sulfuric acid,. a) what is the concentration ,of sulfuric acid, is ppm? b) what is the molarity ,of sulfuric acid, c) in order to meet the country's environmental regulation, the ,wastewater, needs to be diluted to 2.04X10^-3M. what is the excess amount of water needed to dilute the ,wastewater,?

A Lower-cost Approach to Treating Low-volume Refinery ...
A Lower-cost Approach to Treating Low-volume Refinery ...

Acid, springing is probably one of the oldest on-site treatment methods used in refineries to dispose of spent caustic. ,Acid, springing works by adding a strong ,acid, (e.g., ,sulfuric acid,) to the spent caustic until the pH is around 3. At this low pH, the ,acid, oil tends to dissociate from the aqueous phase to form a separate floating “oil” layer.

JOURNAL OF INTERNATIONAL ACADEMIC RESEARCH FOR ...
JOURNAL OF INTERNATIONAL ACADEMIC RESEARCH FOR ...

Analar ,potassium dichromate, and redistilled water containing 1.5 mol/l sulfuric ,acid, (98% w/w) were used in the preparation of blank ,solution, (0.05 mol/l) as well as in the presence of five different concentrations of ammonium salts.

Removal of Cr( vi ) from wastewater by a two-step method ...
Removal of Cr( vi ) from wastewater by a two-step method ...

FA was obtained from the Yangliuqing Thermal Power ,Plant, of Tianjin. Cr(VI) was prepared at 100 mg L −1. ,Potassium dichromate, (K 2 Cr 2 O 7), hydrochloric ,acid, (HCl), sulfuric ,acid, (H 2 SO 4), nitric ,acid, (HNO 3), sodium hydroxide (NaOH), and oxalic ,acid, (H 2 C 2 O 4) were of analytical grade.

Removal of Cr( vi ) from wastewater by a two-step method ...
Removal of Cr( vi ) from wastewater by a two-step method ...

FA was obtained from the Yangliuqing Thermal Power ,Plant, of Tianjin. Cr(VI) was prepared at 100 mg L −1. ,Potassium dichromate, (K 2 Cr 2 O 7), hydrochloric ,acid, (HCl), sulfuric ,acid, (H 2 SO 4), nitric ,acid, (HNO 3), sodium hydroxide (NaOH), and oxalic ,acid, (H 2 C 2 O 4) were of analytical grade.

Packed bed column optimization and modeling studies for ...
Packed bed column optimization and modeling studies for ...

1/2/2020, · 1000 mg/L stock chromium ,solution, is obtained by dissolving 2.8287 g of ,potassium dichromate, (K 2 Cr 2 O 7) in 1000 mL distilled water. Further sample solutions of concentration 100, 200 and 300 mg/L were made using the stock ,solution,. The pH of these solutions was modified to 1.5 using 0.1 N Hydrochloric ,acid,.

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