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oil producing wastewater reinjection technology co. ltd

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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oil producing wastewater reinjection technology co. ltd
Phytoremediation of Industrial Wastewater Containing ...
Phytoremediation of Industrial Wastewater Containing ...

Phytoremediation of Industrial ,Wastewater Containing, Nitrates, Nitroglycerin, and Nitroglycol. Roman Marecik 1, Róża Biegańska-Marecik 2, Paweł Cyplik 1, Łukasz Ławniczak 3, Łukasz Chrzanowski 3 . More details. Hide details. 1 Department of Biotechnology and …

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,.

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.

* Nitrate (Environment) - Definition - Online Encyclopedia
* Nitrate (Environment) - Definition - Online Encyclopedia

Nitrate, is formed in soil from the breakdown of nitrogen-rich proteins in ,wastewater,. ,Nitrate,: a salt or ester (,acid,-alcohol product) of nitric ,acid,; in soil, used by plants for building amino acids and proteins. Artificially manufactured nitrates are used in fertilizers and explosives.

Wastewater Nitrification: How it works | ECOS ...
Wastewater Nitrification: How it works | ECOS ...

22/3/2013, · Free nitrous ,acid, (NHO2) is produced from nitrite ions under a low pH in the aeration tank. This type of inhibition is known as substrate inhibition. Substrate inhibition usually occurs at a concentration of 400-500 mg/l ammonium ions or when ammonium ions are converted to nitrite ions at a faster rate than nitrite ions are converted to ,nitrate, ions.

Wastewater Nitrification: How it works - ECOS
Wastewater Nitrification: How it works - ECOS

Free nitrous ,acid, (NHO2) is produced from nitrite ions under a low pH in the aeration tank. This type of inhibition is known as substrate inhibition. Substrate inhibition usually occurs at a concentration of 400-500 mg/l ammonium ions or when ammonium ions are converted to nitrite ions at a faster rate than nitrite ions are converted to ,nitrate, ions.

Lesson 8: Nitrification and Denitrification
Lesson 8: Nitrification and Denitrification

Organic matter ,containing, nitrogen, e.g., protein and nucleic ,acid,, also biodegrades to release ammonia. Releasing this ammonia into receiving streams has a direct toxic effect on fish and other animals and, in addition, causes significant oxygen depletion. ,Nitrate, is regarded as an undesirable substance in public water.

Denitrification of wastewater with immobilized cells of ...
Denitrification of wastewater with immobilized cells of ...

been carried out with free cells in shake flasks, ,containing nitrate, as KNO 3 and carbon source methanol, C/N ratio was 6. Complete ,nitrate, removal was achieved for 3 hours. In order to determine the kinetic of process the influence of initial ,nitrate, concentration on ,nitrate, removal were examined.

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,.

Wastewater Nitrification: How it works - ECOS
Wastewater Nitrification: How it works - ECOS

Free nitrous ,acid, (NHO2) is produced from nitrite ions under a low pH in the aeration tank. This type of inhibition is known as substrate inhibition. Substrate inhibition usually occurs at a concentration of 400-500 mg/l ammonium ions or when ammonium ions are converted to nitrite ions at a faster rate than nitrite ions are converted to ,nitrate, ions.

Nitrification (Ammonia Oxidation) In Wastewater Treatment ...
Nitrification (Ammonia Oxidation) In Wastewater Treatment ...

of water receiving it. Thus, many domestic and industrial ,wastewater, treatment plants are required to remove the ammonia before discharge of the treated water. As shown in the nitrification process equations, ammonia is first oxidized to nitrite ions, then the nitrite ions are oxidized to ,nitrate, ions.

Biological treatment of industrial wastewater containing ...
Biological treatment of industrial wastewater containing ...

The biological treatment of ,wastewater, from an aminoplastic resin-producing industry was studied in a pre-denitrifica-tion system. This study reports results on the removal of organic matter and nitrogen compounds from ,wastewater, which contained high levels of formaldehyde and formic ,acid,. The formaldehyde concentration in the feed varied ...

Biological treatment of industrial wastewater containing ...
Biological treatment of industrial wastewater containing ...

The biological treatment of ,wastewater, from an aminoplastic resin-producing industry was studied in a pre-denitrifica-tion system. This study reports results on the removal of organic matter and nitrogen compounds from ,wastewater, which contained high levels of formaldehyde and formic ,acid,. The formaldehyde concentration in the feed varied ...

Denitrification of wastewater with immobilized cells of ...
Denitrification of wastewater with immobilized cells of ...

been carried out with free cells in shake flasks, ,containing nitrate, as KNO 3 and carbon source methanol, C/N ratio was 6. Complete ,nitrate, removal was achieved for 3 hours. In order to determine the kinetic of process the influence of initial ,nitrate, concentration on ,nitrate, removal were examined.

Effects of Sulfamic Acid to Free Cyanide Test When Added ...
Effects of Sulfamic Acid to Free Cyanide Test When Added ...

Effects of Sulfamic ,Acid, to Free Cyanide Test When Added to Sample ,Containing Nitrate,/Nitrite That Is Below 10 mg/L. 2007. This is Nayl Rebay, a Corporate Pollution Control Officer of one of Private Companies here in the Philippines. We are currently quantifying the positive interference of ,Nitrate, and Nitrite to Free Cyanide Tests by Ion Selective ...

Treatment of an Industrial Wastewater Containing Acrylic ...
Treatment of an Industrial Wastewater Containing Acrylic ...

A simulated high-strength [chemical oxygen demand (COD) ∼ 85, 000 mg / L] ,wastewater containing, primarily acrylic ,acid,, acetic ,acid,, and formaldehyde was treated in an anaerobic membrane bioreactor.The reactor consisted of a 25 L complete-mix tank fitted with three Kubota flat-panel membrane cartridges.

Treatment of an Industrial Wastewater Containing Acrylic ...
Treatment of an Industrial Wastewater Containing Acrylic ...

A simulated high-strength [chemical oxygen demand (COD) ∼ 85, 000 mg / L] ,wastewater containing, primarily acrylic ,acid,, acetic ,acid,, and formaldehyde was treated in an anaerobic membrane bioreactor.The reactor consisted of a 25 L complete-mix tank fitted with three Kubota flat-panel membrane cartridges.

The Nitrogen Cycle - How Ammonia and Nitrite are ...
The Nitrogen Cycle - How Ammonia and Nitrite are ...

In natural or aquaculture ponds and lakes, this condition is found only in the sludge, but in wastewater, the condition can be created by adding nitrate to collection systems, anaerobic lagoons etc., or is created by addition of wastewater that formerly contained ammonia, following nitrification, as described above.

Nitrate Reduction in Acidogenic Reactor: Influence of ...
Nitrate Reduction in Acidogenic Reactor: Influence of ...

The reactor was fed with synthetic ,wastewater containing nitrate, and glucose as carbon source. Under fixed conditions of chemical oxygen demand (COD) and hydraulic retention time (HRT), and under varied input ,nitrate, concentration, volatile fatty ,acid, (VFA) ...

Lesson 8: Nitrification and Denitrification
Lesson 8: Nitrification and Denitrification

Organic matter ,containing, nitrogen, e.g., protein and nucleic ,acid,, also biodegrades to release ammonia. Releasing this ammonia into receiving streams has a direct toxic effect on fish and other animals and, in addition, causes significant oxygen depletion. ,Nitrate, is regarded as …

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