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Contamination of fracturing flowback fluid

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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Contamination of fracturing flowback fluid
Removal and tracing of cephalosporins in industrial ...
Removal and tracing of cephalosporins in industrial ...

16/5/2019, · Another ,experiment, was carried out using the optimum predicted levels by the design, which were pH 5 and MSN 0.95 g/L on the collected industrial ,wastewater, samples. The correspondence between the predicted and experimental results at the optimum levels was 96.78%, 95.15%, and 101.93% for cefadroxil, cefprozil, and cefradine, respectively, which proved the validity of the design.

Electroflotation for Treatment of Industrial Wastewaters ...
Electroflotation for Treatment of Industrial Wastewaters ...

14/1/2019, · The opposite condition took place in strongly ,acidic wastewater,. Alam et al. ( 2017 ) conducted electroflotation studies on effect of pH on bubbles size using Iridium dioxide-coated titanium anode, and SS 316 cathode and concluded that the neutral pH condition was in favour of smaller hydrogen bubbles whereas smaller oxygen bubbles were produced in ,acidic, solution.

Sources and Environmental Fate of Strongly Complexed ...
Sources and Environmental Fate of Strongly Complexed ...

Water treatment. Get e-Alerts. Abstract. Measurements of Ni speciation made by competitive ligand exchange techniques indicate that a significant portion of the dissolved Ni in surface waters, ,wastewater, effluents, and surface runoff is complexed by an extremely strong ligand.

A Comprehensive Study on the Application of Reverse ...
A Comprehensive Study on the Application of Reverse ...

12/4/1976, · The RO unit was carried out with a single-step or a double-step ,filtration,; a cost analysis, performed on the different case studies, allowed computing the final specific costs per cubic meter of treated water, showing that a double ,filtration, step allowed a lower salinity water, albeit raising the costs up to about 5 €/m 3, a high price justified only if an ultra pure water should be needed ...

Nickel - DuPont
Nickel - DuPont

Water/Wastewater. Removal of nickel from water and organic solvents is fairly common using strong acid cation resins. For waters with low levels of salt content, a strong acid cation resin such as AmberSep™ G26 H Resin would be a good starting point.

Nickel - DuPont
Nickel - DuPont

Water/,Wastewater,. Removal of ,nickel, from water and organic solvents is fairly common using strong acid cation resins. For waters with low levels of salt content, a strong acid cation resin such as AmberSep™ G26 H Resin would be a good starting point.

Recovery of Copper Nickel and Zinc from Wastewater via ...
Recovery of Copper Nickel and Zinc from Wastewater via ...

In this study, the gold refinery, wastewater, that, contains, copper,, nickel, and zinc in the chloride and nitrate media has been used. Since the, wastewater, was supplied from the gold refining process, the solution were strongly, acidic, (pH below 0). In order to adapt the pH for metal extraction firstly caustic solution was added to adjust pH to 1.

Nickel - DuPont
Nickel - DuPont

Water/Wastewater. Removal of nickel from water and organic solvents is fairly common using strong acid cation resins. For waters with low levels of salt content, a strong acid cation resin such as AmberSep™ G26 H Resin would be a good starting point.

[SnS4]4- clusters modified MgAl-LDH composites for mercury ...
[SnS4]4- clusters modified MgAl-LDH composites for mercury ...

[SnS4] 4-clusters modified MgAl-LDH composites for mercury ,ionsremoval, from acid ,wastewater,* Lihong Chen a, Haomiao Xu a, *, Jiangkun Xie a, b, Xiaoshuang Liu a, Yong Yuan a, Ping Liu a, Zan Qu a, Naiqiang Yan a a School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China b Shanghai Institute of Pollution Control and Ecological Security ...

Sources and Environmental Fate of Strongly Complexed ...
Sources and Environmental Fate of Strongly Complexed ...

Water treatment. Get e-Alerts. Abstract. Measurements of Ni speciation made by competitive ligand exchange techniques indicate that a significant portion of the dissolved Ni in surface waters, ,wastewater, effluents, and surface runoff is complexed by an extremely strong ligand.

Removing Heavy Metals From Wastewater
Removing Heavy Metals From Wastewater

process as applied to industrial ,wastewater, treatment. Definitions The following words or phrases are commonly used when discussing metal removal. Caustic - Refers to sodium hydroxide (NaOH). When caustic is added to water, the water becomes strongly alkaline (pH > > 7). Concentration - The quantity of a material in a given volume of solution.

Controlled Nickel Sulfide Precipitation Using Gaseous ...
Controlled Nickel Sulfide Precipitation Using Gaseous ...

Removal of Ni(II) from strongly ,acidic wastewater, by chelating precipitation and recovery of NiO from the precipitates. Journal of Environmental Sciences 2021, 104 , 365-375. https://doi.org/10.1016/j.jes.2020.12.014

Membrane-free electrodeionization using phosphonic acid ...
Membrane-free electrodeionization using phosphonic acid ...

15/9/2019, · Actually, the nickel containing wastewater usually contains, 2–5 mg/L nickel ,ions, after pretreatment of pH adjustment, coagulation sedimentation, adsorption or electrochemical separation . Reverse osmosis [18] , [19] , nanofiltration [20] , [21] or electrodeionization [22] , [23] can remove almost all the ions, by a single process or an integrated one, and the treated water can meet the standards of …

nickel recovery system chrome recovery system effluent ...
nickel recovery system chrome recovery system effluent ...

The strongly ,acidic, cation exchanger removes trivalent chromium (and other cations) while the macroracticular weak base anion exchange resin removes the haxavalent chrome. This produces deionised water which can be recycled in a closed loop system.

Removal of Ni(II) from strongly acidic wastewater by ...
Removal of Ni(II) from strongly acidic wastewater by ...

Nonferrous, metal-smelting industries generally produce large amounts of strongly acidic wastewater that contains nickel, arsenic, copper, zinc, and iron, with high H 2 SO 4 concentrations (5%–20%). For environmental and economic reasons, high-value heavy metals in …

Inhibition of Cyanobacterial Growth on a Municipal ...
Inhibition of Cyanobacterial Growth on a Municipal ...

Sidestreams in ,wastewater, treatment plants can serve as concentrated sources of nutrients (i.e., nitrogen and phosphorus) to support the growth of photosynthetic organisms that ultimately serve as feedstock for production of fuels and chemicals. However, other chemical characteristics of these streams may inhibit growth in unanticipated ways. Here, we evaluated the use of liquid recovered from ...

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