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Treatment of acid wastewater containing chromium by electrolytic cell

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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Treatment of acid wastewater containing chromium by electrolytic cell
Identification of Geochemical Processes During Hydraulic ...
Identification of Geochemical Processes During Hydraulic ...

The hydraulic ,fracturing, technologies have paved the way toward the ,development, of unconventional ,shale gas, from low‐permeability ,shale, reservoirs. The solutes in ,flowback, water after hydraulic ,fracturing, of ,shale gas, reservoirs can originate from injected ,fracturing, fluids and formation water, but may also be derived from solutes liberated by geochemical reactions.

Removal of organics from shale gas fracturing flowback ...
Removal of organics from shale gas fracturing flowback ...

Shale gas fracturing flowback fluid, contains various degradation difficulty organic compounds after hydraulic ,fracturing,. A hybrid treatment method was developed for treating ,flowback, and produced water (FPW) using pre-treatment (NaClO) followed by the expanded granular sludge bed (EGSB) and moving bed biofilm reactor (MBBR). ,Gas, chromatography–mass spectrometry (GC-MS) was employed to ...

Shale gas: a provisional assessment of climate change and ...
Shale gas: a provisional assessment of climate change and ...

2.4 ,Development, of ,shale gas, in the UK ... Table A.1: Chemical constituents of products used in ,fracturing fluid, (cont) ..... iii Table A.2: Analysis of ,flowback fluid composition, (information from New York State (2009) . iv. www.tyndall.ac.uk Page 5 Executive ...

The Potential Water Quality Impacts of Shale Gas ...
The Potential Water Quality Impacts of Shale Gas ...

The potential ,development, of ,shale gas, has brought with it several concerns about environmental impacts, these include: induced seismicity, air pollution, and groundwater contamination. During hydraulic ,fracturing for shale gas,, large volumes of oxic and acidic water are injected into the ,gas,-bearing formations. The injected fluids contain a range of additives and will mix and react with the ...

Sampling and Analysis of Water Streams Associated with the ...
Sampling and Analysis of Water Streams Associated with the ...

the ,composition, and properties of ,flowback, water and on the influent water streams that are used to perform frac jobs. The objective of this effort was to conduct the initial sampling and ,analysis of water streams associated, with ,shale gas development, in the Marcellus ,Shale,.

The Effects of Shale Gas Exploration and Hydraulic ...
The Effects of Shale Gas Exploration and Hydraulic ...

methane in drinking water wells near the shale gas wells had a thermogenic composition (e.g., heavier 13C-CH 4) than wells located 1 km away from shale gas sites with an apparent mixed thermogenic-biogenic composition. New emerging noble gas data [14] reinforce the carbon isotopes and hydrocarbon

Sampling and Analysis of Water Streams Associated with the ...
Sampling and Analysis of Water Streams Associated with the ...

the ,composition, and properties of ,flowback, water and on the influent water streams that are used to perform frac jobs. The objective of this effort was to conduct the initial sampling and ,analysis of water streams associated, with ,shale gas development, in the Marcellus ,Shale,.

(PDF) An overview of hydraulic fracturing and other ...
(PDF) An overview of hydraulic fracturing and other ...

As discussed below in Sections 2.3 and 2.8.1, CO 2 fluids eliminate the need of water while providing extra energy from the gas expansion to shorten the flowback time.In general, a fracturing fluid can be thought as the sum of three main components:Fracturing Fluid = Base Fluid + Additives + Proppant A fracturing fluid can be "energized" with the addition of compressed gas (usually either CO 2 or N 2 ).

Vidic: SHIP - Shale Gas Information Plattform
Vidic: SHIP - Shale Gas Information Plattform

The ,composition, of the ,flowback, water changes as a function of the time the water flowing out of the ,shale, formation was in contact with the formation. Minerals and organic constituents present in the formation dissolve into the ,fracturing, water, creating a brine solution that includes high concentrations of salts, metals, oils, greases, and soluble organic compounds, both volatile and ...

Microbial communities in flowback water impoundments from ...
Microbial communities in flowback water impoundments from ...

Flowback from the development of shale gas contains fracturing fluid additives as well as suspended and dissolved constituents from the shale formation including high concentrations of salts and metals (Gregory et al., 2011; Barbot et al., 2013), dissolved and nonaqueous hydrocarbons, and in some locations naturally occurring radioactive material (NORM; Hill et al., 2004; Soeder & Kappel, 2009).

Removal of organic compounds from shale gas flowback water
Removal of organic compounds from shale gas flowback water

The ,shale gas flowback, water was obtained from a Baltic ,shale gas, basin (Poland) under non-disclosure agreement regarding location, storage conditions and ,composition, of the ,fracturing fluid, used at the production site. The water was sampled within two months after commencement of the first ,fracturing, …

Optimization of Well Stimulation Fluids in the Marcellus ...
Optimization of Well Stimulation Fluids in the Marcellus ...

the Marcellus ,Shale Gas Development, Using Integrated Technologies . EME 580: FINAL REPORT . By . ... Figure 7: Volumetric ,Composition, of a ,Shale Gas, Fracture ,Fluid, (Source: ... Marcellus ,Shale, Well ,flowback,-load volume percent recovery vs. ,flowback, volume118 .

Explore Shale. Marcellus Shale Development Geology and Water.
Explore Shale. Marcellus Shale Development Geology and Water.

Flowback Flowback, is ,fluid, that returns to the surface with extracted ,gas,. It may contain clay, salts, rock particles, naturally occurring elements dissolved from the rock, and chemicals that were added prior to beginning the hydraulic ,fracturing, process. Most ,flowback, occurs within 7-10 days of drilling, but may continue for 3-4 weeks.

Explore Shale. Marcellus Shale Development Geology and Water.
Explore Shale. Marcellus Shale Development Geology and Water.

Flowback Flowback, is ,fluid, that returns to the surface with extracted ,gas,. It may contain clay, salts, rock particles, naturally occurring elements dissolved from the rock, and chemicals that were added prior to beginning the hydraulic ,fracturing, process. Most ,flowback, occurs within 7-10 days of drilling, but may continue for 3-4 weeks.

Surfactant Analysis in Hydraulic Fracturing Flowback ...
Surfactant Analysis in Hydraulic Fracturing Flowback ...

Hydraulic ,Fracturing, Technique • Hydraulical ,fracturing, or fracking is a technique that consists of pumping water into a wellbore to create small fractures into which fluids can migrate and leave openings to release trapped ,gas, • Fracking facilitates the extraction of natural ,gas, from ,shale, plays in which it is unreachable with

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