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

Environmental impact 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.

Certificate of Honor

Get in touch with us

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

Environmental impact of fracturing flowback fluid
Exploration and verification of the feasibility of sulfide ...
Exploration and verification of the feasibility of sulfide ...

1/4/2021, · In this study, a SPDA process was established in a UASB reactor fed with synthetic ,wastewater containing nitrate,, ammonium and sulfide. This new sulfur cycle-associated anammox reaction was operated for 392 days and achieved a TN removal rate and efficiency of approximately 0.29 kgN/(m³•d) and 80%, respectively, thus proving the feasibility of this long-term application.

Removal of Nitrate-Nitrogen in Pickling Acid Wastewater ...
Removal of Nitrate-Nitrogen in Pickling Acid Wastewater ...

Lab-scale Electrodialysis(ED) system with different membranes combined with before or after pyroma process were carried out to remove ,nitrate, from two pickling ,acid wastewater containing, high ...

Adsorption of emerging contaminants from water and ...
Adsorption of emerging contaminants from water and ...

15/3/2021, · Table 1 summarizes the types, impacts and general treatment methods of some typical aqueous ECs. At present, the methods commonly used to remove ECs from water mainly include microbial method (Ferreira et al., 2016), electrochemical method (Barrios et al., 2016), adsorption method, membrane process, and chemical oxidation process (Acero et al., 2015).

Treatment of highly acidic wastewater containing high ...
Treatment of highly acidic wastewater containing high ...

1/10/2017, · The wastewater can be of various varieties but some common constituents are nitro-aromatic compounds like hexamethylene, other, nitrate, and, nitrites, waste acid, like sulphuric, acid, nitric acid,, phosphoric, Acid,, etc. Other constituents may include hardness, sulphates, ammonia, fluorides, phosphates, silica, metals (Al, Fe, Mn, etc.), etc.

Sulfuric acid - McGill School Of Computer Science
Sulfuric acid - McGill School Of Computer Science

Sulfuric acid, (British English: sulphuric ,acid,), H 2 S O 4, is a strong mineral ,acid,. It is soluble in water at all concentrations. It was once known as oil of vitriol, coined by the 8th-century Alchemist Jabir ibn Hayyan, the chemical's probable discoverer. ,Sulfuric acid, has many applications, and is produced in greater amounts than any other chemical besides water.

Benzalkonium Chlorides: Uses Regulatory Status and ...
Benzalkonium Chlorides: Uses Regulatory Status and ...

Benzalkonium chlorides (BACs) are chemicals with widespread applications due to their broad-spectrum antimicrobial properties against bacteria, fungi, and viruses. This review provides an overview of the market for BACs, as well as regulatory measures and available data on safety, toxicity, and environmental contamination. We focus on the effect of frequent exposure of microbial communities to ...

Treatment of wastewater containing Silver Nitrate
Treatment of wastewater containing Silver Nitrate

There is no Chromic ,acid, in this titration. I am using an autotitrator. Basically it is silver ,nitrate,, nitric ,acid, and deionized water. Can I let the silver settle, decant the water and adjust the pH to 7.0 and dump the water? The Silver waste will be put into a drum and disposed of accordingly. Thanks for you help in advance. Randy A. Mattson

Frontiers | Microbial Phosphorus Solubilization and Its ...
Frontiers | Microbial Phosphorus Solubilization and Its ...

It has, however, been reported that the effectiveness of the ,inorganic acids, and the chelating substances in the release of phosphorus in soil is less than that of the ,organic acids,. Kim et al. (1997b) therefore reiterate that ,organic, acid production in P solubilization by PSM is not the sole reason for the increase in P concentration into culture medium.

Denitrification of high nitrate concentration wastewater ...
Denitrification of high nitrate concentration wastewater ...

The use of different organic carbon sources in the denitrification of ,wastewater containing, 2500 mg nitrates/L in a SBR was studied. Three alternative sources of carbon were tested: ,wastewater, from a sweet factory, a residue from a soft drinks factory and a residue from a dairy plant. The first two are sugar-rich, whereas the third presents a high content in lactic ,acid,.

Nitrate - Wikipedia
Nitrate - Wikipedia

Nitrate, is a polyatomic ion with the chemical formula NO − 3. Salts ,containing, this ion are called nitrates.Nitrates are common components of fertilizers and explosives. Almost all inorganic nitrates are soluble in water.An example of an insoluble ,nitrate, is Bismuth oxynitrate

How can I treat wastewater containing nitrite ammonium ...
How can I treat wastewater containing nitrite ammonium ...

I've never seen ,wastewater containing, any nitrite, just ,nitrate,. It is very difficult to nitrify to nitrite without full nitrification to ,nitrate,, at least in sewage treatment plants.

Nitric acid - Wikipedia
Nitric acid - Wikipedia

Nitric acid, (H NO 3), also known as aqua fortis (Latin for "strong water") and spirit of niter, is a highly corrosive mineral ,acid,.. The pure compound is colorless, but older samples tend to acquire a yellow cast due to decomposition into oxides of nitrogen and water. Most commercially available ,nitric acid, has a concentration of 68% in water.

The degradation mechanism of wastewater containing MDEA ...
The degradation mechanism of wastewater containing MDEA ...

A laboratory set up of degradation MDEA waste using UV/H 2 O 2 was conducted and the degradation mechanism has been studied. Glycine, oxalic ,acid,, acetic ,acid,, ,nitrate, ion, nitrite ion and ammonium ion are identified as degradation intermediate product. Published in: …

IS 3025-1 (1987): Methods of sampling and test (physical ...
IS 3025-1 (1987): Methods of sampling and test (physical ...

Itshould be noted that detergents, possibly ,containing, phosphates, cannot be used if phos­ phates o~surface.acti~e.agents are to be determined, nor can chromic ,acid,-sulphuric ,acid, mixture be used .ftrace quantities of sulphate and chromium are to be determined. Polyethylene containers, in general, should be cleaned by filling with 1 m~1/1 ...

Process for nitrosation of C-H-acidic compounds - Huels ...
Process for nitrosation of C-H-acidic compounds - Huels ...

R may also be a ,organic, radical. The ,organic, radical is preferably inert to reaction with any of the components of the present process, such as nitrite salts, protic ,acids,, nitrous acid and water. Preferably, R is a hydrocarbon group containing 1 to 20 carbon atoms. The hydrocarbon group may have any structure. such as linear, branched or cyclic.

Wastewater | Chesapeake Bay Program
Wastewater | Chesapeake Bay Program

The process by which ammonia is oxidized into nitric ,acid, or another ,nitrate, or nitrite. Biological nitrification is a key step in the removal of nitrogen from ,wastewater,. Nutrient removal technology (NRT)

Ions transfer modeling through monopolar and bipolar ...
Ions transfer modeling through monopolar and bipolar ...

wastewater containing, ammonium ,nitrate, treated by bipolar membrane electrodialysis (BPMED). Different species are involved in this electrodialysis, namely ammonium ions NH 4 +, nitrates NO 3-, ammoniac NH 3, water H 2 O and protons H+. Calculations made with the material balance sheets equations obtained in batch mode, allowed to validate

Method 352.1: Nitrogen Nitrate (Colorimetric Brucine) by ...
Method 352.1: Nitrogen Nitrate (Colorimetric Brucine) by ...

6.6 Potassium ,nitrate, standard solution: 1.0 mL = 0.001 mg NO 3-N. Dilute 10.0 mL of the stock solution (6.5) to 1 liter in a volumetric flask. This standard solution should be prepared fresh weekly. 6.7 Acetic ,acid, (1 + 3): Dilute 1 volume glacial acetic ,acid, (CH 3COOH) with 3 volumes of distilled water.

Nitrate and nitrite in drinking-water - WHO
Nitrate and nitrite in drinking-water - WHO

Nitrate, is secreted in saliva and then converted to nitrite by oral microflora. ,Nitrate, can reach both surface water and groundwater as a consequence of agricultural activity (including excess application of inorganic nitrogenous fertilizers and manures), from ,wastewater, treatment and from oxidation of nitrogenous waste

Chat Online Inquiry Email

Business cooperation

+86 513525609655

Company address

Road West, North Branch, Jingkai Road, Puyang City