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oil gas field fracturing flow-back fluids treatment techniques using

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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oil gas field fracturing flow-back fluids treatment techniques using
(PDF) Wastewater remediation using a spiral shaped reactor ...
(PDF) Wastewater remediation using a spiral shaped reactor ...

Finally, experiments were carried out with ,wastewater, discharge from an ,electroplating plant, in its original concentration, and higher values of total Cr(VI) reduction were observed.

Taking a Close Look at the Pollutant | California Water ...
Taking a Close Look at the Pollutant | California Water ...

The pollutants found in the coating may be chromium (from chromate salts) such as sodium or ,potassium dichromate,, or acidic solutions (low pH) from phosphoric ,acid contained, in proprietary chemicals or toxic organics from passivation, and coloring …

ASSESSMENT OF HEAVY METALS IN MUNICIPAL SEWAGE …
ASSESSMENT OF HEAVY METALS IN MUNICIPAL SEWAGE …

Sludge is a waste product generated at the end of municipal and industrial ,wastewater, ... valuable nutrients ,contained, in the sludge is becoming a key issue across the globe (Lau et al., K.L. Prakash, ... 0.3 gm of sample was taken and 10 ml of 1N ,potassium dichromate, was added and followed by 20 ml concentrated sulphuric ,acid,.

(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 found in …

Feather degradation potential of ...
Feather degradation potential of ...

To 1 ml of ,potassium dichromate, solution, 200 µl of 1 M sulfuric ,acid, and 500 µl of carbazide reagent were added and incubated for 30 min. The absorbance of solution was recorded at 540 nm. In control 1 ml double-distilled water was used. To prepare carbazide reagent, to 0.05 g 1, 5 diphenyl carbazide, 2 ml glacial acetic ,acid, was added.

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

In the synthetic sample of ,potassium dichromate, only Cr(VI) metal ions were present, so the binding sites on adsorbent sur- face were occupied by the single metal ions, so removal percent

How we get exposed to the heavy metal CHROMIUM (Cr) | Toxno
How we get exposed to the heavy metal CHROMIUM (Cr) | Toxno

Industries and processes in which exposure to chromium (VI) occurs include: production, use and welding of chromium-containing metals and alloys (e.g. stainless steels, high-chromium steels); ,electroplating,; production and use of chromium-containing compounds, such as pigments, paints (e.g. application in the aerospace industry and removal in construction and maritime industries), catalysts, chromic ,acid,, …

A Review on Heavy Metal Ions and Containing Dyes Removal ...
A Review on Heavy Metal Ions and Containing Dyes Removal ...

Cd, is one of the most toxic heavy metal found in industrial e ffl uent which has been utilized broadly in textiles, batteries, ceramics, electronic and metal‐finishing industries, electroplating industries, pigments, petroleum products, insecticides, solders, television sets, metallurgical industries, steel, photography plastics and synthetic chemicals. 82 Because of the anthropogenic activities, water is contaminated by …

Chromium sulfate | Cr2(SO4)3 - PubChem
Chromium sulfate | Cr2(SO4)3 - PubChem

The experiment was carried out on 47 Wistar male rats, 4-5 months old. The solutions of chromium sulfate or ,potassium dichromate contained, 2.5, 5.0 and 10.0 mg Cr per milliliter. Exposure time was 4 hrs. It was found that diffusion rate of Cr3+ was seven-time less than of Cr2O7(2-).

Chromium(VI) Accumulation and Tolerance by Tradescantia ...
Chromium(VI) Accumulation and Tolerance by Tradescantia ...

as, potassium dichromate, (K 2Cr 2O 7)fromitsstocksolution(100mgL −1). The pH of Cr solution and control, tap water, ranged between 6.8 and 7.0. The nutrient solution in each container was replaced with a fresh medium every 4 days during the experi-ments. Growth conditions of the, plants, were the same as noted earlier in‘Screening

Electricity production during the treatment of real ...
Electricity production during the treatment of real ...

1/12/2008, · To the best of our knowledge, potassium dichromate has not been used as the cathodic electron acceptor in MFCs. In this work, the objective is to produce electricity directly from, electroplating was,te,water, using a MFC combined with accomplishing wastewater treatment.

Chromium(VI) Accumulation and Tolerance by Tradescantia ...
Chromium(VI) Accumulation and Tolerance by Tradescantia ...

as potassium dichromate (K 2Cr 2O 7)fromitsstocksolution(100mgL −1). The pH of Cr solution and control tap water ranged between 6.8 and 7.0. The nutrient solution in each container was replaced with a fresh medium every 4 days during the experi-ments. Growth conditions of the plants were the same as noted earlier in‘Screening

VICAIRE - Module 2 - Chapter 6
VICAIRE - Module 2 - Chapter 6

The chemical oxidant selected for the COD test is ,potassium dichromate, (K 2 Cr 2 O 7). The sample is oxidized by a boiling mixture of K 2 Cr 2 O 7 and sulfuric ,acid, using an excess of K 2 Cr 2 O 7 . After digestion, the remaining unreduced K 2 Cr 2 O 7 is measured to determine the amount consumed by titration with ferrous ammonia sulfate (FAS) until the end point is indicated by sharp colour ...

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

1/2/2008, · In the synthetic sample of ,potassium dichromate, only Cr(VI) metal ions were present, so the binding sites on adsorbent sur- face were occupied by the single metal ions, so removal percent

CN203487004U - Treatment system of wastewater with DMF ...
CN203487004U - Treatment system of wastewater with DMF ...

As the components, namely, the buffer pool, the pretreatment device, the chemical feeding device, the adjusting pool, the anaerobic ammoniation pool, the biologic selection pool, the biological denitrification device and the like, are connected together in a certain mode, the treatment system is capable of performing denitrification treatment on the DMF and the DMAC ,in the wastewater,, and is beneficial to …

Qdos chemical metering pumps | WMFTG IN
Qdos chemical metering pumps | WMFTG IN

Precise delivery of ,electroplating, chemicals. BIA Kunstoff - und Galvanotechnik is involved in ,electroplating, plastic components with metallic surfaces for the automative industry. The Qdos pumps employed by BIA must precisely dose the chemical additives to the ,electroplating, machines with minimal pulsation, to avoid them being "shattered".

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