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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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Detection of COVID-19 in Wastewater
Detection of COVID-19 in Wastewater

Analytical ,methods,: ,Methods, will vary, and researchers have not determined the most effective method for quantifying SARS -CoV-2 in ,wastewater,, but ,methods, typically should include sample concentration followed by extraction of genetic material to amplify, detect, and quantify target

COVID - Wastewater Surveillance
COVID - Wastewater Surveillance

Wastewater, Surveillance. ,Wastewater, surveillance has been used to measure the prevalence of infectious diseases within a population and may complement current testing ,methods, to monitor COVID-19 in our communities. Complex environmental matrices are often challenging for traditional molecular ,methods, such as qPCR due to the abundance of inhibitory ...

More wastewater testing under way in Singapore to tackle ...
More wastewater testing under way in Singapore to tackle ...

This was done on top of standard testing ,methods,. ... or ribonucleic ,acid, in the ,wastewater, does not suggest the presence ... the sensitivity of the method in ,detecting, early or a few ...

COVID - Wastewater Surveillance
COVID - Wastewater Surveillance

Wastewater, Surveillance. ,Wastewater, surveillance has been used to measure the prevalence of infectious diseases within a population and may complement current testing ,methods, to monitor COVID-19 in our communities. Complex environmental matrices are often challenging for traditional molecular ,methods, such as qPCR due to the abundance of inhibitory ...

Treatment of Ammonia Nitrogen Wastewater in Low ...
Treatment of Ammonia Nitrogen Wastewater in Low ...

Wastewater, generated during rare earth production is radioactive, ammonia-containing, fluoride-containing, ,acid, or alkaline [1]. In recent years, the long-term mining of rare earth ore in southern Jiangxi, China, produced large amounts of ammonia nitrogen ,wastewater, in low concentrations.

Detection methods for toxic gas detectors? | Environmental ...
Detection methods for toxic gas detectors? | Environmental ...

In fact, when we use the poison gas detector for testing, we can choose a variety of testing ,methods,. 1, colorimetric measurement skills. In addition to the use of toxic gas alarms, the colorimetric tube technology is a method for ,detecting, toxic and harmful gases that are currently used in industrial environmental protection.

Detection of Poly- and Perfluoroalkyl Substances (PFASs ...
Detection of Poly- and Perfluoroalkyl Substances (PFASs ...

Drinking water contamination with poly- and perfluoroalkyl substances (PFASs) poses risks to the developmental, immune, metabolic, and endocrine health of consumers. We present a spatial analysis of 2013–2015 national drinking water PFAS concentrations from the U.S. Environmental Protection Agency’s (US EPA) third Unregulated Contaminant Monitoring Rule (UCMR3) program. The number of ...

More wastewater testing under way in Singapore to tackle ...
More wastewater testing under way in Singapore to tackle ...

This was done on top of standard testing ,methods,. ... or ribonucleic ,acid, in the ,wastewater, does not suggest the presence ... the sensitivity of the method in ,detecting, early or a few ...

9010 INTRODUCTION - Standard Methods For the Examination ...
9010 INTRODUCTION - Standard Methods For the Examination ...

Standard Methods, for the Examination of Water and ,Wastewater, represents the best current practice of American water analysts. ... those found in the guts and feces of warm-blooded animals generally include organisms capable of producing gas and/or ,acid, from lactose in …

Biological and Chemical Wastewater Treatment Processes ...
Biological and Chemical Wastewater Treatment Processes ...

2/12/2014, · ,Wastewater,, or sewage, originates from human and home wastewaters, industrial wastes, animal wastes, rain runoff, and groundwater infiltration. Generally, ,wastewater, is the flow of used water from a neighborhood. The ,wastewater, consists of 99.9% water by weight, where the remaining 0.1% is suspended or dissolved material.

Treatment of Ammonia Nitrogen Wastewater in Low ...
Treatment of Ammonia Nitrogen Wastewater in Low ...

Wastewater, generated during rare earth production is radioactive, ammonia-containing, fluoride-containing, ,acid, or alkaline [1]. In recent years, the long-term mining of rare earth ore in southern Jiangxi, China, produced large amounts of ammonia nitrogen ,wastewater, in low concentrations.

Detection of COVID-19 in Wastewater
Detection of COVID-19 in Wastewater

Analytical methods: Methods will vary, and researchers have not determined the most effective method for quantifying SARS -CoV-2 in wastewater, but methods typically should include sample concentration followed by extraction of genetic material to amplify, detect, and quantify target

Detection of Poly- and Perfluoroalkyl Substances (PFASs ...
Detection of Poly- and Perfluoroalkyl Substances (PFASs ...

Drinking water contamination with poly- and perfluoroalkyl substances (PFASs) poses risks to the developmental, immune, metabolic, and endocrine health of consumers. We present a spatial analysis of 2013–2015 national drinking water PFAS concentrations from the U.S. Environmental Protection Agency’s (US EPA) third Unregulated Contaminant Monitoring Rule (UCMR3) program. The number of ...

Method for Monitoring and Control of a Wastewater Process ...
Method for Monitoring and Control of a Wastewater Process ...

1. 1-15. (canceled) 16. A method ,of detecting, the amount of nonpolar contaminants in ,wastewater,, the method comprising: introducing a polarity-sensitive tracer into the ,wastewater, to form traced ,wastewater,; ,detecting, fluorescence intensity and emission wavelength of the polarity-sensitive tracer in the traced ,wastewater, as the traced ,wastewater, flows through a flow cell; measuring turbidity of ...

Detection of COVID-19 in Wastewater
Detection of COVID-19 in Wastewater

Analytical methods: Methods will vary, and researchers have not determined the most effective method for quantifying SARS -CoV-2 in wastewater, but methods typically should include sample concentration followed by extraction of genetic material to amplify, detect, and quantify target

Detection methods for toxic gas detectors? | Environmental ...
Detection methods for toxic gas detectors? | Environmental ...

In fact, when we use the poison gas detector for testing, we can choose a variety of testing ,methods,. 1, colorimetric measurement skills. In addition to the use of toxic gas alarms, the colorimetric tube technology is a method for ,detecting, toxic and harmful gases that are currently used in industrial environmental protection.

Biological and Chemical Wastewater Treatment Processes ...
Biological and Chemical Wastewater Treatment Processes ...

2/12/2014, · ,Wastewater,, or sewage, originates from human and home wastewaters, industrial wastes, animal wastes, rain runoff, and groundwater infiltration. Generally, ,wastewater, is the flow of used water from a neighborhood. The ,wastewater, consists of 99.9% water by weight, where the remaining 0.1% is suspended or dissolved material.

Using Wastewater Surveillance to Track COVID-19 Outbreaks ...
Using Wastewater Surveillance to Track COVID-19 Outbreaks ...

Wastewater based epidemiology (WBE), or sewershed surveillance, is an approach using analysis of wastewater to identify presence of biologicals or chemicals relevant for public health monitoring. WBE is not new, as wastewater has previously been used to detect the presence of pharmaceutical or industrial waste, drug entities (including opioid abuse), viruses and potential emergence of super bugs.

Method for Monitoring and Control of a Wastewater Process ...
Method for Monitoring and Control of a Wastewater Process ...

1. 1-15. (canceled) 16. A method ,of detecting, the amount of nonpolar contaminants in ,wastewater,, the method comprising: introducing a polarity-sensitive tracer into the ,wastewater, to form traced ,wastewater,; ,detecting, fluorescence intensity and emission wavelength of the polarity-sensitive tracer in the traced ,wastewater, as the traced ,wastewater, flows through a flow cell; measuring turbidity of ...

9010 INTRODUCTION - Standard Methods For the Examination ...
9010 INTRODUCTION - Standard Methods For the Examination ...

Standard Methods, for the Examination of Water and ,Wastewater, represents the best current practice of American water analysts. ... those found in the guts and feces of warm-blooded animals generally include organisms capable of producing gas and/or ,acid, from lactose in …

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