Welcome to the company ! we have many years of professional experience !
rsdgj@pyzyrsd.com +86 513525609655

oil and gas drilling

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.

Certificate of Honor

Get in touch with us

We will confidentially process your data and will not pass it on to a third party.

oil and gas drilling
Membrane Filtration - an overview | ScienceDirect Topics
Membrane Filtration - an overview | ScienceDirect Topics

Membrane filtration, can be carried out by means of two operating modes: dead-end filtration and cross-flow filtration (Fig. 2).In dead-end filtration, the feed stream flows perpendicular to the membrane and is forced through the membrane. In consequence, the retained components accumulate on the membrane surface forming a cake layer, resulting in a decrease of the filtration rate due to the ...

(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.

Feasibility of Co-Treating Olive Mill Wastewater and Acid ...
Feasibility of Co-Treating Olive Mill Wastewater and Acid ...

3/10/2020, · ,Acid mine drainage, (AMD), also known as acid rock, drainage,, can contain high concentrations of sulphate, metals, and metalloids that can contaminate groundwater and watercourses and damage the health of aquatic species, plants, wildlife, and …

Constructed Wetlands for Treating Acid Mine Drainage
Constructed Wetlands for Treating Acid Mine Drainage

source of ,acid mine, drainage is by chemosynthetic bacteria including . Thiobacillus ferooxidans, T. thiooxidans, and . Ferrobacillus ferroxidans. These bacteria are known to catalyze the oxidation of pyrite (Fennessy & Mitsch 1989). How does a wetland remove AMD? Wetlands have several functions that aid in the removal of metals in drainage and ameliorate

Microbial Community Shifts in Response to Acid Mine ...
Microbial Community Shifts in Response to Acid Mine ...

This ,acid mine drainage, (AMD) is generated when metal sulfide minerals, mainly pyrite, are oxidized in the presence of water and accelerated by the action of chemolithotrophic bacteria. This generates acidity and mobilizes large concentrations of iron (Fe), and other toxic trace metals and metalloids, depending on the composition of the exposed rock ( Robb, 1994 ; Mason, 2002 ).

Frontiers | The Ecology of Acidophilic Microorganisms in ...
Frontiers | The Ecology of Acidophilic Microorganisms in ...

Two types of microorganisms relevant for sewer corrosion are neutrophilic sulfur-oxid,izing microorganisms (NSOM), and acidophilic sulfur-oxidizing, microorganisms, (ASOM) both of which use reduced forms of sulfur as energy sources, but respectively, have a preference for growth at a neutral or acidic pH (Islander et al., 1991; Roberts et al., 2002).

(PDF) Role of microorganisms in remediation of wastewater ...
(PDF) Role of microorganisms in remediation of wastewater ...

and microorganisms are, the main components of a CW that contribute to pollutant removal pr ocesses from wastewater, . The associated environmental and economic benefits have established CWs as a

Acid mine drainage reduces radioactivity in fracking waste
Acid mine drainage reduces radioactivity in fracking waste

Much of the naturally occurring radioactivity in fracking ,wastewater, might be removed by blending it with another ,wastewater, from ,acid mine, drainage, according to a Duke University-led study.

Microorganism - Wikipedia
Microorganism - Wikipedia

A ,microorganism,, or microbe, is a microscopic organism, which may exist in its single-celled form or a colony of cells.. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from 6th century BC India. The scientific study of ,microorganisms, began with their observation under the microscope in the 1670s by Antonie van Leeuwenhoek.

Effective biotreatment of acidic mine water and hospital ...
Effective biotreatment of acidic mine water and hospital ...

1/10/2020, · Meanwhile, hospitals generate an average of 750 L of wastewater each day per bed [ 3 ]. This type of wastewater is rich in, pathogenic microorganisms,, radioactive elements, discarded and excreted pharmaceutical molecules, and other toxic chemicals [ 4 ].

Aerobic Heterotrophic Bacteria Indigenous pH 2.8 Acid Mine ...
Aerobic Heterotrophic Bacteria Indigenous pH 2.8 Acid Mine ...

the activities of microorganisms in acid mine waterhavebeenreported byTuttleet al. (14, 15). It waspostulated thatthedispersedheterotrophic bacteria recovered from an acid stream were transients that entered the stream via runoff or from nonacid contaminated streams. No gram-positive organisms were isolated by the tech-niques employed, and this was postulated as

Acid mine drainage - Wikipedia
Acid mine drainage - Wikipedia

14/6/2004, · ,Acid mine, drainage, ,acid, and metalliferous drainage, or ,acid, rock drainage is the outflow of acidic water from metal mines or coal mines. ,Acid, rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually within rocks containing an abundance of sulfide minerals. Areas where the earth has been disturbed may create ,acid, …

Anaerobic Respiration | Boundless Microbiology
Anaerobic Respiration | Boundless Microbiology

Sulfate-reducing bacteria may be utilized for cleaning up contaminated soils; some species are able to reduce hydrocarbons, such as benzene, toluene, ethylbenzene, and xylene. Sulfate-reducing bacteria may also be a way to deal with ,acid mine, waters.

Microbial Diversity of Emalahleni Mine Water in South ...
Microbial Diversity of Emalahleni Mine Water in South ...

22/1/2014, · The present study aims firstly at determining the microbial diversity of ,mine,-water collected in Emalahleni, South Africa and secondly isolating and characterizing the most dominant bacterial species found in the ,mine, water in terms of its resistance to both V 5+ and Ni 2+ in a modified ,wastewater, liquid media. The results revealed a microbial diversity of 17 orders, 27 families and 33 …

Acid mine drainage - Wikipedia
Acid mine drainage - Wikipedia

Acid mine drainage,, ,acid, and metalliferous drainage (AMD), or ,acid, rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines.. ,Acid, rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually within rocks ...

Chat Online Inquiry Email

Business cooperation

+86 513525609655

Company address

Road West, North Branch, Jingkai Road, Puyang City