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The acid water from the electrolytic water machine is not waste water

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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The acid water from the electrolytic water machine is not waste water
A COMPARATIVE STUDY ON RECOVERY OF CHROMIUM FROM …
A COMPARATIVE STUDY ON RECOVERY OF CHROMIUM FROM …

chromium, and magnesium ion species from tannery ,wastewater, by control of these species, followed by synthesis of magnesium chromite (MgCr 2 O 4) using co-precipitation routes in the temperature range of 550–650 °C. A study on the thermal decomposition of the formed sludge ,containing chromium, and magnesium hydroxide

Can we recover valuable chemicals from sewage? | Stanford ...
Can we recover valuable chemicals from sewage? | Stanford ...

26/2/2019, · We are engineering new chemical processes to, extract, valuable chemicals like sulfur, nitrogen and phosphorous from, water,, and then use these to create valuable products like fertilizers, disinfectants and more. It’s recycling, but for water. The ammonia in urine, for instance,, can, be used to make ammonium sulfate, a common fertilizer.

REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS …
REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS …

Therefore, it is imperative that hexavalent ,chromium, be removed from ,wastewater,. A removal of hexavalent ,chromium, using scrap iron filings was studied in both synthetic ,wastewater,, ,containing, 30 mg l-1 of hexavalent ,chromium,, and ,chromium, plating ,wastewater,. All experiments were evaluated in batch experiments. Effective conditions for removal ...

Extraction of Oleic Acid from Moroccan Olive Mill Wastewater
Extraction of Oleic Acid from Moroccan Olive Mill Wastewater

In the first part, we have separated our oil from the olive mill wastewater collected, just by natural decantation. And we could extract oleic fatty acid as a product with a very important commercial value, by fractional crystallization in laboratory scale that we could separate it with a high purity of 95.49%.

Chromium Speciation in Municipal Wastewaters and Seawater
Chromium Speciation in Municipal Wastewaters and Seawater

with 100 fig of ,Fe,(III) as ,Fe,(OH)3; the mix ture was then shaken for 6 hours. The same procedure was followed for ,wastewater, sam ples, using a 50-ml sample and mixing with 2 mg of ,Fe,(III). After the precipitates were collected by filtration, the ,chromium, was dis TABLE L Methods of analysis for dissolved ,chromium,. Form Matrix Sample Treatment ...

REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS …
REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS …

Therefore, it is imperative that hexavalent ,chromium, be removed from ,wastewater,. A removal of hexavalent ,chromium, using scrap iron filings was studied in both synthetic ,wastewater,, ,containing, 30 mg l-1 of hexavalent ,chromium,, and ,chromium, plating ,wastewater,. All experiments were evaluated in batch experiments. Effective conditions for removal ...

Chromium trioxide - Wikipedia
Chromium trioxide - Wikipedia

Chromium trioxide, (also known as ,chromium,(VI) oxide or chromic anhydride) is an inorganic compound with the formula CrO 3.It is the acidic anhydride of chromic ,acid,, and is sometimes marketed under the same name. This compound is a dark-purple solid under anhydrous conditions, bright orange when wet and which dissolves in water concomitant with hydrolysis.

Removal of Chromium Using Electrochemical Approaches: A Review
Removal of Chromium Using Electrochemical Approaches: A Review

removal of ,chromium, from ,wastewater, [18-21]. To effectively remove ,chromium, from plating industry effluents, iron electrodes in bipolar mode were used for the electrochemical precipitation of Cr(VI) [22]. Electroreduction consumed 10 times more power than electrochemical reduction, as

Laboratory Pilot Test of Chromium (III) Isolation from ...
Laboratory Pilot Test of Chromium (III) Isolation from ...

The second step involves the dilution of filtrate and the precipitation of Al ,and Fe, at pH 4.8. The third step involves the precipitation of Cr(III) at pH 7.0 for the separation of Ca and Mg from Cr(III). As a result, a precipitate ,containing, less interfering metals was obtained in the third step.

Removal of hexavalent chromium-contaminated water and ...
Removal of hexavalent chromium-contaminated water and ...

Owlad, M. and Aroua, M.K. and Daud, W.M.A.W. and Baroutian, S. (2009) ,Removal of hexavalent chromium-contaminated water and wastewater,: A review. Water Air and Soil Pollution, 200 (1-4). pp. 59-77. ISSN 0049-6979 Full text not available from this repository.Request a copy

Iron (Fe) and water - Lenntech
Iron (Fe) and water - Lenntech

Aluminum waste products ,containing, iron were discharged on surface water in the earlier days. Today, these are removed and applied as soil fillers. Iron compounds are applied in precipitation reactions, to remove compounds from water in water purification processes. The 59 ,Fe, isotope is applied in medical research and nuclear physics.

Selected Heavy Metals Removal From Electroplating ...
Selected Heavy Metals Removal From Electroplating ...

14/3/2019, · The discharge limit of ,wastewater containing, Cr (VI) into the environment (surface waters) is regulated at <0.05 mg/L and 0.1 mg/L to inland surface waters according to the WHO and EPA 48,49 ...

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

The toxicity of hexavalent ,chromium, Cr (VI) is normally 1000 times higher than that of Cr (III) trivalent ,chromium,. 47 Accordingly, the World Health Organization (WHO) recommends that the ,chromium, content in drinking water must be <50 ppb or 0.05 mg L −1[48] and European Union require that the discharge of Cr (VI) to surface water should be below 50 μg L −1. 49 ,Chromium, (VI) is dangerous ...

Can we recover valuable chemicals from sewage?
Can we recover valuable chemicals from sewage?

We are engineering new chemical processes to ,extract, valuable chemicals like sulfur, nitrogen and phosphorous from water, and then use these to create valuable products like fertilizers, disinfectants and more. It’s recycling, but for water. The ammonia in urine, for instance, ,can, be used to make ammonium sulfate, a common fertilizer.

Can we recover valuable chemicals from sewage?
Can we recover valuable chemicals from sewage?

We are engineering new chemical processes to ,extract, valuable chemicals like sulfur, nitrogen and phosphorous from water, and then use these to create valuable products like fertilizers, disinfectants and more. It’s recycling, but for water. The ammonia in urine, for instance, ,can, be used to make ammonium sulfate, a common fertilizer.

Wastewater Surveillance Testing Methods | CDC
Wastewater Surveillance Testing Methods | CDC

It is important to quantitatively assess recovery because ,wastewater, is chemically and biologically complex and variable, and often contains constituents that ,can, interfere with sample concentration, nucleic ,acid, extraction, or molecular quantification methods.

Scientists have figured out how to extract valuable ...
Scientists have figured out how to extract valuable ...

The study is the first time it has been used to extract, high concentrations, of, rare earth elements, from, acid, mine, wastewater,, according to scientists. By simply modifying existing treatment processes, the industry could use fewer chemicals and get more value from acid mine waste streams. This is the main value of this study, the scientists conclude.

Sampling and Analytical Methods | Hexavalent Chromium ...
Sampling and Analytical Methods | Hexavalent Chromium ...

1. previously cleaned with chromic ,acid, cleaning solution. 2. previously used for storage of ,chromium, (VI) standards. 3. previously used for storage of bulks ,containing, high concentrations of ,chromium, (VI) Reagents - All chemicals should be reagent grade or better. Nitrogen gas. Deionized water (DI H 2 O) with a specific conductance of less ...

Chromium - DuPont
Chromium - DuPont

More ,chromium, can be removed by the resin per equivalent when the ,chromium, is in the dichromate form (pH 2 – pH 6). Filtration can also be used to remove chromate from ,wastewater,. Ferrous sulfate is used to reduce hexavalent chrome to trivalent chrome. This material is then precipitated, coagulated, and filtered out of the water.

What you extract is what you see: Optimising the ...
What you extract is what you see: Optimising the ...

1/4/2019, · Water samples extracted using different SPE sorbents (Oasis HLB, Supelco ENVI-Carb+, Telos C18/ENV) at, acidic, and neutral pH were compared for their performance in recovering biological effects. Acidification, commonly used for stabilisation, significantly altered the endocrine activity and toxicity of most (waste)water samples.

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