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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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sesame oil press machine
Recovery and treatment of fracturing flowback fluids in ...
Recovery and treatment of fracturing flowback fluids in ...

1/11/2015, · According to the characteristics of the fracturing flowback fluid, and for purpose of enhancing the recovery and reuse efficiency of flowback fluid, a processed water quality standard with total suspended particle content as the main control index for new recoverable fracturing flowback fluid system has been set up , , , by which the performance, of fracturing fluid will not be affected, and, formation damage will not increased, .

Methods of ammonia removal in anaerobic digestion: a ...
Methods of ammonia removal in anaerobic digestion: a ...

The enhancement with biomass and humic ,acid, did not show any desirable result, with or without pH adjustment. On the other hand, the addition of 10–20 g/L of zeolite showed an increase in methane production. The enhancement effect of zeolite was greater on the pH-unadjusted piggery ,wastewater, (pH 8.1) than on the pH-reduced ,wastewater, (pH 6.5).

(PDF) The retention and flowback of fracturing fluid of ...
(PDF) The retention and flowback of fracturing fluid of ...

This study is significant for understanding the ,flowback, rules of ,fracturing fluid,, diagnosing fracture development, and identifying reservoir properties.

Electrocoagulation in Wastewater Treatment
Electrocoagulation in Wastewater Treatment

COD, of 245 mg/L were obtained for Fenton treatment, compared to 50 A/m2, with a reaction time of 15 minute, pH of 7, and initial ,COD, of 245 mg/L [19]. Saravanan et al. concluded that by using ,Acid, Blue 113 with electrocoagulation was capable of removing 91% ,COD, under 3 A/dm2 of current

6 Steps to Reuse Wastewater and Reduce Operation Costs ...
6 Steps to Reuse Wastewater and Reduce Operation Costs ...

6 Steps to Reuse ,Wastewater, and ,Reduce, Operation Costs. September 17, 2020. ... Nonbiodegradable ,COD, is usually an indicator of this, with dissolved values on the lower scale, but still, ... in Electrocoagulation, in the Fenton process, ,in acid, stripping, and more.

11. Produced water and flowback fluid: re-injection and ...
11. Produced water and flowback fluid: re-injection and ...

Flowback fluid is hydraulic fracturing fluid which returns to the surface after high-volume hydraulic, fracturing., This may include mobilised natural gas and formation water.

The retention and flowback of fracturing fluid of branch ...
The retention and flowback of fracturing fluid of branch ...

1/3/2021, · The purpose of this study is to understand the re,tention, mechanisms of fracturing fluid in branch fractures from a multi-scale, qualitatively reveal the flowback processes, and quantitatively characterize the percentage of fluid retained.

Analysis of Hydraulic Fracturing Flowback and Produced ...
Analysis of Hydraulic Fracturing Flowback and Produced ...

A major ,purpose, of the study was the identification of the ethylene oxide (EO) surfactants and the construction of a database with accurate masses and retention times in order to unravel the mass spectral complexity of surfactant mixtures used in hydraulic ,fracturing, fluids. For example, over 500 accurate mass assignments are made i...

Wastewater Treatment : The Definitive Guide (2019)
Wastewater Treatment : The Definitive Guide (2019)

19/4/2019, · The ,wastewater, from a tannery normally contains a high concentration of ,COD,, has ,acid, PH and high chloride content. Emulsified fat and settable substances in high volumes tend to form a foam, which turns to be harmful to the environment if it is discharged without proper treatment.

Measuring Chemical Oxygen Demand in Water Treatment ...
Measuring Chemical Oxygen Demand in Water Treatment ...

Questions. Why is the measurement of ,chemical oxygen demand, (,COD,) important? For most users, ,COD, is important as an indicator of how much oxygen will be required to treat the incoming waste streams, which in turn drives the use of aeration equipment and ultimately electricity.

Coagulation and Flocculation in Water and Wastewater ...
Coagulation and Flocculation in Water and Wastewater ...

Coagulation is also important in several ,wastewater, treatment operations. A common example is chemical phosphorus removal and another, in overloaded wastewatertreatment plants, is the practice of chemically enhancing primary treatment to ,reduce, suspended solids and organic loads from primary clarifiers. The Coagulants

Treatment on industrial wastewater for removal of surfactants
Treatment on industrial wastewater for removal of surfactants

adjusted with sodium hydroxide and sulphuric ,acid,. The effects of pH on turbidity and ,COD, removal from jar tests for coagulation of ,wastewater, using ferric chloride are shown in Figures 1 and 2. It can be seen that turbidity and ,COD, removals are most effective at a pH range between 7 and 9. The rate of turbidity and ,COD, removal

Collecting and Preserving Waste and Wastewater Samples for ...
Collecting and Preserving Waste and Wastewater Samples for ...

Waste handling systems as part of livestock production layouts are being developed and used to protect the environment.One part of waste management is sampling and analyzing the waste and ,wastewater, to know what you have. Information from samples can be valuable for properly operating the system.If results of analyses of waste samples are to be meaningful, then the sample collection and ...

Optimization of Fracturing Fluid Flowback Based on Fluid ...
Optimization of Fracturing Fluid Flowback Based on Fluid ...

The purpose of frac fluid flowback is to, outflow the fracturing fluid and prevent the proppant backflow,, which determines the effect of fracturing fluid flowback. The fracturing treatment in field lacks relevant theoretical models for prediction. Therefore, this work focuses on establishing the flowback model of hydraulic fracturing for multilayer fractured wells.

Hydraulic Fracturing | Alberta Energy Regulator
Hydraulic Fracturing | Alberta Energy Regulator

Make-up water is nonsaline or alternative water that is injected into the wellbore to fracture the reservoir. Because hydraulic ,fracturing, operations do not use water after a well is fractured, opportunities to recycle ,fracturing fluid, (,flowback, water) within the well are limited, so …

FLOWBACK AID FOR FRACTURING FLUIDS - Schlumberger ...
FLOWBACK AID FOR FRACTURING FLUIDS - Schlumberger ...

A flowback aid may be included in the fracturing fluid to, reduce capillary pressure and water blocks,, thereby improving the kinetics of the flowback and, preventing, or, minimizing, the leaving,-be,hind of any substantial amount of the fracturing fluid. Flowback aids, such as surfactants, have also been shown to aid in the “clean-up” of the proppant pack, thereby accelerating the flow of hydrocarbons through the …

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