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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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Daily Top Articles – COVID Reference
Daily Top Articles – COVID Reference

Some ,thoughts, on far-field airborne transmission (defined as within-room but beyond 6 feet) of SARS-CoV-2. Air changes per hour and air filtration is a simple but important concept that could be deployed to help reduce risk from within-room but distant airborne transmission of SARS-CoV-2 and other respiratory infectious diseases.

News | FRELP
News | FRELP

The ,acid, etching was conducted with different modes and different topologies of acids and bases but in the end the best results are obtained with nitric ,acid,. This choice was carefully evaluated also in function of the environmental impact because of the main drawback of this technology is that, however, we must eventually neutralize a residual ,acid, polluted in part by metals.

FLOATATION REAGENTS - SlideShare
FLOATATION REAGENTS - SlideShare

If it is used in flotation ,under, high alkali ,conditions,, it can improve the separation flotation effect between lead and zinc, with little or without any cyanide. Isopropyl (ethyl,isobutyl) xanthogen ethyl formate Application: It is a collecting agent of nonferrous metal mine, which has better flotation effect than the related xanthogenate, also has more steady character and could be used in ,acidic, pulp .

Research on treatment and mechanism of salicylhydroxamic ...
Research on treatment and mechanism of salicylhydroxamic ...

The simulated, flotation wastewater, with, hydroxamic acid, was put into BAF step by step according the nutrient solution to, hydroxamic acid wastewater, ratio of 9:1, 8:2, 7:3 until 10:0. The concentration and removal ratio of CODCr during the simulated, flotation wastewater, continuous feeding process were tested as in Figure 6.

Pretreatment of industrial wastewater by natural flotation ...
Pretreatment of industrial wastewater by natural flotation ...

2/3/2021, · Flotation allows the elimination of 10659 Kg/day of greases and oils for process wastewater while it, eliminates 5765 Kg/day for acidic wastewater., This reduces the cost of treatment related to chemicals and energy.

Review of Organic Wastewater Compound Concentrations and ...
Review of Organic Wastewater Compound Concentrations and ...

They can be sources of nutrients and pathogen pollution and have been linked to health effects in communities where they contaminate drinking water. However, few studies have evaluated their ability to remove ,organic wastewater, compounds (OWCs) such as pharmaceuticals, hormones, and detergents.

A review of the applications of ion floatation: wastewater ...
A review of the applications of ion floatation: wastewater ...

Rose et al. investigated ,conditions, for concentrating yttrium from solution using α-sulphonated fatty acids via ion flotation, and a maximum recovery of 99.5% was obtained ,under, optimum ,conditions, within 30 minutes; furthermore, they found that by increasing the pH to 8, the extraction rate was 3 times faster with a smaller loss in extraction compared with flotation at pH 2.75. 84 Chirkst et al. found that as the …

Frontiers | Polyphosphate: A Multifunctional Metabolite in ...
Frontiers | Polyphosphate: A Multifunctional Metabolite in ...

Polyphosphate (polyP), a polymer of orthophosphate (PO43-) of varying lengths, has been identified in all kingdoms of life. It can serve as a source of chemical bond energy (phosphoanhydride bond) that may have been used by biological systems prior to the evolution of ATP. Intracellular polyP is mainly stored as granules in specific vacuoles called acidocalcisomes, and its synthesis and ...

Application of coagulation/flocculation in oily wastewater ...
Application of coagulation/flocculation in oily wastewater ...

Under acidic conditions,, anionic polyelectrolytes are considered non-ionic. When the pH is below 4.5, anionic PAM(APAM) is generally nonionic. For polyacrylic acid (PAA), it is 4.5. The adsorption action will be realized by hydrogen bonding because electrostatic interaction between the polymer chains and particles will be considered weak at this time.

Flotation in Water and Wastewater Treatment - MDPI
Flotation in Water and Wastewater Treatment - MDPI

Flotation constitutes a separation process that originated from mineral processing. Nowadays, wider applications have been found and compared to flotation for water and ,wastewater, treatment. Stress in the present review paper was mainly applied to heavy metal ions recovery by flotation and the respective mechanism followed, being either ion, precipitate, or sorptive flotation.

DEGRADATION KINETICS OF ORGANIC MATTER IN DAIRY …
DEGRADATION KINETICS OF ORGANIC MATTER IN DAIRY …

Effect of pH on COD removal from the synthetic dairy ,wastewater, using flotation/ozonation process (42 mg L-1 of ozone) From Figure 1 it was observed that the ,acidic wastewater, (pH 3.6) showed better removal of COD with efficiency values greater than 75% in …

Dissolved effluent organic matter: Characteristics and ...
Dissolved effluent organic matter: Characteristics and ...

15/6/2015, · The dissolved effluent ,organic, matter (dE f OM) present in biologically treated urban ,wastewater,, consists of a heterogeneous mixture of refractory ,organic, compounds with diverse structures and varying origin, including dissolved natural ,organic, matter, soluble microbial products, endocrine disrupting compounds, pharmaceuticals and personal care products residues, disinfection …

(PDF) Flotation in Water and Wastewater Treatment
(PDF) Flotation in Water and Wastewater Treatment

At present, the research priority of flotation ,wastewater, mainly focuses on degradation ,of organic, matter and removal of heavy metal ions [6, 7]. In the actual production process, most of the ...

COVID-19 Pandemic: An Unprecedented Blessing for Nature ...
COVID-19 Pandemic: An Unprecedented Blessing for Nature ...

The loadings of COVID-19 virus from ,wastewater, plants/sewer systems to ground or surface water sources further threatens human life. Thus, the COVID-19 pandemic further highlights the need for better sewer systems, proper functioning of ,wastewater, treatment plants and access to safe and clean water.

A review of the applications of ion floatation: wastewater ...
A review of the applications of ion floatation: wastewater ...

Rose et al. investigated ,conditions, for concentrating yttrium from solution using α-sulphonated fatty acids via ion ,flotation,, and a maximum recovery of 99.5% was obtained ,under, optimum ,conditions, within 30 minutes; furthermore, they found that by increasing the pH to 8, the extraction rate was 3 times faster with a smaller loss in extraction compared with ,flotation, at pH 2.75. 84 Chirkst et al. found that as the pH …

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