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Treatment and reinjection 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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Treatment and reinjection of fracturing flowback fluid
(PDF) Acid Mine Drainage (AMD): causes treatment and case ...
(PDF) Acid Mine Drainage (AMD): causes treatment and case ...

Naturally-occurring ,bacteria, can ac- celerate AMD production by assisting in the breakdown The mining of certain minerals, including gold, of sulfide minerals. copper, and nickel, is associated with ,acid, drainage Also referred to as ,acid, rock drainage (ARD), AMD problems that can cause long-term impairment to emanating from ,mine, waste rock, tailings, and ,mine, waterways and biodiversity.

Development and Status of the Treatment Technology for ...
Development and Status of the Treatment Technology for ...

The summarized ,treatment, technologies for ,acid mine, drainage mainly include neutralization, sulfidization, constructed wetland method, adsorption method, microbiological method, ion exchange method, membrane technology, and microbial fuel cell technology. Also, the primary technology of ,treatment, for ,acid mine, drainage is systematically compared ...

Dynamic Experimental Study on Treatment of Acid Mine ...
Dynamic Experimental Study on Treatment of Acid Mine ...

In order to solve the problem of pollution of, acid mine, drainage (AMD), such as low pH value, and, being rich in SO42−, Fe, and, Mn pollution ions, etc., immobilized particles were prepared by using sugar cane-refining waste (bagasse), a natural composite mineral (called medical stone in China) and, sulfate-reducing bacteria, (SRB) as substrate materials, based on microbial immobilization technology.

Review on biological wastewater treatment and resources ...
Review on biological wastewater treatment and resources ...

Anaerobic biological ,treatment of acid mine, drainage from abandoned mines using SRB has shown nearly 99.2% effective removal of copper, zinc, and nickel (Sierra-Alvarez et al. 2006). The use of suspended biological methods for bioremediation of ,wastewater, and resources recovery is an eco-friendly and cost-efficient way.

US5645730A - Acid wastewater treatement - Google Patents
US5645730A - Acid wastewater treatement - Google Patents

A process for treating ,acid wastewater, containing heavy metals has been invented, the process including adding fly ash to the ,acid wastewater, to reduce heavy metals content of the ,acid wastewater,. In one aspect the ,acid wastewater, contains soluble iron and adding fly ash reduces the level of soluble iron. In one aspect the ,acid wastewater, contains ,sulfate, ions and adding fly ash reduces the ,sulfate, ion level. In one aspect solid silicate salts are added to the ,acid wastewater,.

Application of Red Mud in Wastewater Treatment
Application of Red Mud in Wastewater Treatment

The RM treated with ,hydrogen peroxide, was studied by Gupta . The result is the activated RM of phenol, and the removal rate of its derivatives (2- and 4-chlorophenol and 2,4-dichlorophenol) is 98% at 500 °C. Thus, it can effectively remove phenol from ,wastewater,.

Effects of COD/SO42- Ratios on an Acidogenic Sulfate ...
Effects of COD/SO42- Ratios on an Acidogenic Sulfate ...

By applying molasses wastewater as the sole organic carbon source and sodium sulfate as the electron acceptor in an acidogenic sulfate-reducing reactor, the electron flows of, sulfate-reducing bacteria, (,SRB,), the physiological metabolic pathways and products of SRB, the population dynamics of SRB, and the effect of sulfide production on hydrogen production were examined under different chemical oxygen …

Hazardous waste treatment technologies - Wang - 2019 ...
Hazardous waste treatment technologies - Wang - 2019 ...

According to Wang Wang Feng Wang & Li , the reaction between 2,3,7,8‐tetrachlorodibenzo‐p‐dioxin (TCDD) and ,hydrogen peroxide, (H 2 O 2) involved two mechanisms: (a) nucleophilic substitution to the terminal C‐Cl bounds followed by dechlorination, and (b) nucleophilic addition of an O atom from to C atom in the C‐O bond causing the dissociation of the C‐O bond.

Three-year survey of sulfate-reducing bacteria community ...
Three-year survey of sulfate-reducing bacteria community ...

1/3/2013, · A 3-year, survey on sulfate-reducing bacteria (SRB), was conducted in the, waters of, the, arsenic-rich acid mine drainage (AMD), located at Carnoulès (France) to determine the influence of environmental parameters on their community structure.

Acid Mine Drainage Treatment in Fluidized-Bed Bioreactors ...
Acid Mine Drainage Treatment in Fluidized-Bed Bioreactors ...

As an alternative,, sulfide-containing solution, (i.e., biogenic sulfide) can, be produced on site by, sulfate reducing bacteria, that can utilize sulfate present, in the wastewater,, thus reducing ...

Publications | sesenmlab
Publications | sesenmlab

Lin, Y.T. and M.C. Lu. Catalytic Action of Goethite in the ,Oxidation, of 2- Chlorophenols with ,Hydrogen Peroxide,. in 4th IWA Specialist Conference ,Oxidation, Technologies for Water and ,Wastewater, Treatment. 2006. Goslar, Germany: CUTEC-Institut GmbH.

Experiment study on Comprehensive Utilization of ...
Experiment study on Comprehensive Utilization of ...

The process for extracting copper powder and Nickel sulfate from ,electroplating, sludge is described.It is shown that copper powder grade can be obtained 90%, coefficient of copper recovery 95%,and rate of nickel recovery 80%.Nickel sulfate quality reaches industrial first grade.The solidification residue could be used as common building material.,Waste water, of technical process reaches the ...

Mine drainage: Remediation technology and resource ...
Mine drainage: Remediation technology and resource ...

Commercial chitin and shrimp shell waste were evaluated as substrates for ,sulfate,‐,reducing bacteria, (SRB) to treat AMD‐impacted water in an anaerobic reactor (Rodrigues, Nunez‐Gomez, Silveira, Lapolli, & Lobo‐Recio, 2019). It was found that the shrimp shell waste had the best removal of ,sulfate, …

Fenton Systems – ORAIPL
Fenton Systems – ORAIPL

The Fenton process was reported by Fenton already over a hundred years ago for maleic acid ,oxidation,: Fe 2 + + H 2 O 2 —->Fe 3 + + OH– + .OH The rate constant for the reaction of ferrous ion with ,hydrogen peroxide, is high and Fe (II) oxidizes to Fe(III) in a few seconds to minutes in the presence of excess amounts of ,hydrogen peroxide,.

Environmental science Journal Impact Factor | Juniper ...
Environmental science Journal Impact Factor | Juniper ...

The efficient utilization of ,hydrogen peroxide, decreases due to accelerated decomposition of ,hydrogen peroxide, into water and oxygen [3,81]. However, based on the Arrhenius theory of rate constants in relation to temperature, it is expected that increase in temperature leads to higher generation of hydroxyl radicals from the increase in concentration of produced Fe(OH) 2+ [ 82 ].

Passive Treatment of Acid Mine Drainage in Bioreactors ...
Passive Treatment of Acid Mine Drainage in Bioreactors ...

The, treatment of acid mine drainage, (AMD) using dissimilatory, sulfate reduction, (DSR) utilises the ability of, sulfate reducing bacteria, (SRB) to, reduce sulfate to sulfide using, organic compounds ...

Enhanced reductive removal of ciprofloxacin in ...
Enhanced reductive removal of ciprofloxacin in ...

where C 0 is the concentration of the PdCl 2 solution before the reaction (mg L −1), C is the concentration of the PdCl 2 solution after the reaction (mg L −1), V is the volume of PdCl 2 solution (L), and m is the dry weight of the initial dry E. coli (g). 2.3. Synthesis of the biogenic palladium nanoparticles under anaerobic conditions One gram of wet cells was added to 200 mL of PdCl 2 ...

An overview of sulfidogenic biological reactors for the ...
An overview of sulfidogenic biological reactors for the ...

2/2/2017, · Microbial precipitation of heavy metals, by sulfate reducing bacteria, (SRB) through, sulfate reduction, as corresponding sulfides is being seen as a promising technique for the, treatment, of, metal, contaminated wastewater.

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