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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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water separator filter for hydraulic oil
Dr. Md. Abul Hashem Associate Professor Leather ...
Dr. Md. Abul Hashem Associate Professor Leather ...

Md. Abul Hashem, Md. Shahruk Nur-A-Tomal, Md. Hasibur Rahman Sheikh, Treatment of high ,chromium,-,containing, tannery ,wastewater, using Indigenous plant charcoal–An approach to waste management. Proceedings of the 5th International Conference on Solid Waste Management in the Developing Countries, 25-27 February 2017, Khulna, Bangladesh

IJERPH | Free Full-Text | Chromium Pollution in European ...
IJERPH | Free Full-Text | Chromium Pollution in European ...

These include mining and metal works, steel and metal alloys ,production,, paint manufacturing, wood and paper processing, dyeing, and raising the ,chromium, content in ,wastewater, [14,15,16]. In addition, the fall out of ashes produced by the incineration of coal or municipal waste for energy generation and the ,production, of second-generation fertilizers contribute to the elevated Cr (VI) content ...

Discovery properties and applications of chromium and its ...
Discovery properties and applications of chromium and its ...

13/2/2015, · Electrolytic ,production, of ,chromium, in the lab. 1. ‘Chromic ,acid,’ (cf. section Further applications) is mixed with deionized water to form a solution having a concentration of 250 g L −1. Sulfuric ,acid, is added to the solution to keep the SO 4 2− concentration level at 2.5 g L −1. 2. The prepared solution is fed to an electrolytic cell.

(PDF) Removal of toxic chromium from aqueous solution ...
(PDF) Removal of toxic chromium from aqueous solution ...

Removal of toxic ,chromium from aqueous solution, wastewater, and saline water by ,marine red alga Pterocladia capillacea and its activated, carbon

ARCHIVED - Chromium and its Compounds - PSL1 - Canada.ca
ARCHIVED - Chromium and its Compounds - PSL1 - Canada.ca

Chromium, is a naturally occurring metal that is present principally in the trivalent or hexavalent forms in small amounts throughout the Canadian environment. ,Chromium, ore is not currently produced in Canada; however, approximately 74 000 tonnes (gross weight) of various ,chromium,-,containing, materials were imported into Canada in 1991.

IJERPH | Free Full-Text | Chromium Monitoring in Water by ...
IJERPH | Free Full-Text | Chromium Monitoring in Water by ...

Chromium, contamination of drinking water has become a global problem due to its extensive use in industry. The most commonly used methods for ,chromium, detection in water are laboratory-based methods, such as atomic absorption spectroscopy and mass spectroscopy. Although these methods are highly selective and sensitive, they require expensive maintenance and highly trained staff.

Assessment of chromium contamination in the surface water ...
Assessment of chromium contamination in the surface water ...

Chromium can enter the atmosphere as a result of fossil fuel burning, steel ,production,, stainless steel welding, and Cr manufacturing, whereas, discharges into water and soil can result from industrial processes such as electroplating, tanning, dyeing, water treatment, or disposal of coal ash .

Discovery properties and applications of chromium and its ...
Discovery properties and applications of chromium and its ...

13/2/2015, · Electrolytic ,production, of ,chromium, in the lab. 1. ‘Chromic ,acid,’ (cf. section Further applications) is mixed with deionized water to form a solution having a concentration of 250 g L −1. Sulfuric ,acid, is added to the solution to keep the SO 4 2− concentration level at 2.5 g L −1. 2. The prepared solution is fed to an electrolytic cell.

ARCHIVED - Chromium and its Compounds - PSL1 - Canada.ca
ARCHIVED - Chromium and its Compounds - PSL1 - Canada.ca

Chromium, is a naturally occurring metal that is present principally in the trivalent or hexavalent forms in small amounts throughout the Canadian environment. ,Chromium, ore is not currently produced in Canada; however, approximately 74 000 tonnes (gross weight) of various ,chromium,-,containing, materials were imported into Canada in 1991.

Removal of chromium (VI) from aqueous solution using ...
Removal of chromium (VI) from aqueous solution using ...

1/7/2018, · The main anthropogenic sources of Cr (VI) include metallurgy, refractory, electroplating, and ,production, of ,chromium,-,containing, compounds, such as pigments, paints, catalysts, chromic ,acid,, and tanning agents . ,Chromium, occurs in the environment commonly as Cr (III) and Cr (VI) oxidation states, which have quite different chemical properties.

Adsorption of chromium (III) from aqueous solution using ...
Adsorption of chromium (III) from aqueous solution using ...

Abstract: ,Chromium, (III) is one of the chemicals widely used in various industrial processes. The ,wastewater containing Chromium, (III) can be interconverted to Cr (VI) in the environment, which is one of the most toxic chemicals to biological systems. This paper investigates the removal of ,chromium, …

A study of the treatment of high-salt chromium-containing ...
A study of the treatment of high-salt chromium-containing ...

A comparative experiment of the constructed wetland method and photocatalysis-constructed wetland combination method that treats the high-salt chromium-,containing wastewater, was carried out. The best hydraulic retention time (HRT) of the photocatalysis-constructed …

A study of the treatment of high-salt chromium-containing ...
A study of the treatment of high-salt chromium-containing ...

A comparative experiment of the constructed wetland method and ,photocatalysis-constructed wetland combination method, that treats the high-salt ,chromium,-,containing wastewater, was carried out. The best hydraulic retention time (HRT) of ,the photocatalysis-constructed wetland combination, …

Toxic Water Toxic Crops: India’s ... - Circle of Blue
Toxic Water Toxic Crops: India’s ... - Circle of Blue

Today, the lakes are full of ,wastewater,. Bellandur ,Lake, and Varthur ,Lake, have gained international attention for frothing and catching fire as a result of untreated ,wastewater, discharges. The ,wastewater, contains nitrogen, phosphorus and carbon. It also contains sodium, potassium, calcium, and magnesium. The chemistry causes foam to form and accumulate.

Wastewater Laboratory Procedures And Chemistry
Wastewater Laboratory Procedures And Chemistry

Not all odors in ,wastewater, are from H2S, and there is no correlation between H2S and other odors. The total H2S procedure is good up to 18 mg/1, and higher concentrations must be diluted before testing. H2S ,production, can be controlled by up-sewer aeration which reduces US formation and also stabilizes the ,wastewater, in the collection svstem. 14-104

(PDF) Waste Management in Lead-Acid Battery Industry: A ...
(PDF) Waste Management in Lead-Acid Battery Industry: A ...

The average ,wastewater, flow was 250 m3/day; while the chemical oxygen demand (COD) and heavy metals of raw industrial ,wastewater, concentrations were 15210 mg/L and …

Removal of chromium (VI) from aqueous solution using ...
Removal of chromium (VI) from aqueous solution using ...

Contamination of water bodies with Cr (VI) occurs from natural and anthropogenic sources, the later with an ever-increasing impact on it. The main anthropogenic sources of Cr (VI) include metallurgy, refractory, electroplating, and ,production, of ,chromium,-,containing, compounds, such as pigments, paints, catalysts, chromic ,acid,, and tanning agents

Minimization of Chromium Discharge in Leather Processing ...
Minimization of Chromium Discharge in Leather Processing ...

Results indicate that high concentration, of chromium ranging from, 2656 to 5420 mg/L was discharged as, wastewater, after wet-blue production. The physical parameter of spent chrome liquor: total ...

Recent bioreduction of hexavalent chromium in wastewater ...
Recent bioreduction of hexavalent chromium in wastewater ...

25/11/2017, · A similar type of work has been reported in which synthetic, 100 mg/L Cr(,VI), containing wastewater, as catholyte and anaerobic microorganisms as anodic biocatalyst . The maximum power density of 150 mW/m 2 and the maximum open circuit voltage of 0.91 V were generated with Cr(VI) as the electron acceptor.

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