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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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Treatment of High Ammonium–Nitrogen Wastewater from ...
Treatment of High Ammonium–Nitrogen Wastewater from ...

21/8/2009, · Abstract. Composting municipal wastewater sludge may generate composting wastewater (acid washer water and tunnel wastewater), with high ammonium–nitrogen, (NH 4 –N) concentration; this kind of wastewater is usually generated in a rather small daily amount. A procedure of air stripping with catalytic oxidation was developed and tested with ...

(PDF) Struvite Precipitation for Ammonia Nitrogen Removal ...
(PDF) Struvite Precipitation for Ammonia Nitrogen Removal ...

7-Aminocephalosporanic acid wastewater, usually contains high concentrations of ammonium (NH₄⁺-N), which is known to inhibit nitrification during biological treatment processes. Chemical...

Effect of Ammonia Nitrogen and Dissolved Organic Matter ...
Effect of Ammonia Nitrogen and Dissolved Organic Matter ...

For the first time, ammonia nitrogen (NH3N) was found to significantly influence genotoxicity during wastewater chlorination. After chlorination, the genotoxicity decreased in wastewater with a low NH3N concentration (<10∼20 mg/L), but it increased notably in wastewater with a …

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

Biological nitrification is the microbe-mediated process of oxidizing ammonia to remove nitrogenous compounds from wastewaters. Domestic sewage typically contains, 20 to 40 mg/L (ppm) of ammonia nitrogen, (NH 4-N). Organic matter containing nitrogen, e.g., protein and nucleic acid, also biodegrades to release ammonia.

Ammonia Nitrogen - wastewater treatment
Ammonia Nitrogen - wastewater treatment

One milligram per liter ,of ammonia,-,nitrogen, is equivalent to 1.22 mg/L ,of ammonia,. Confusion on this can result in reporting an ,ammonia, violation when, in fact, there may not be a violation at all. The next article will deal with the other forms of ,nitrogen, that we are concerned with in the ,wastewater, field: nitrate, nitrite, and organic ,nitrogen,.

Struvite Precipitation for Ammonia Nitrogen Removal in 7 ...
Struvite Precipitation for Ammonia Nitrogen Removal in 7 ...

During the enzyme-mediated process for the synthesis of 7-ACA, high levels of ammonium nitrogen (NH4 +-N) and high chemical oxygen demand (COD) were found in the wastewater. NH 4 +-N present in wastewater at excess levels may deteriorate the receiving water quality [1]. In addition, NH4 +-N is harmful to the local ecology [2]. Therefore, these compounds should be removed from the wastewater …

Ammonia Nitrogen - wastewater treatment
Ammonia Nitrogen - wastewater treatment

One milligram per liter ,of ammonia,-,nitrogen, is equivalent to 1.22 mg/L ,of ammonia,. Confusion on this can result in reporting an ,ammonia, violation when, in fact, there may not be a violation at all. The next article will deal with the other forms of ,nitrogen, that we are concerned with in the ,wastewater, field: nitrate, nitrite, and organic ,nitrogen,.

Total Nitrogen in Wastewater - CHEMSCAN
Total Nitrogen in Wastewater - CHEMSCAN

When nitrite and ammonia nitrogen are at minimum concentration (at or near zero) and nitrate is at a maximum value, the wastewater has been fully nitrified. A fully nitrified wastewater will have little or no organic nitrogen, as shown in Figure l.

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

In China, the primary standard ,of ammonia nitrogen, in ,wastewater, is less than 15 mg/L and the secondary standard is less than 50 mg/L (Integrated ,wastewater, discharge standard (GB 8978-1996)). The methods of chemical precipitation, blow-off, and adsorption are commonly used for the treatment ,of ammonia nitrogen wastewater, at low ,concentration,.

Nutrients in Wastewater - Swim Sustain Water
Nutrients in Wastewater - Swim Sustain Water

Why Test for ,Ammonia, & Phosphorus ,Wastewater, may contain ,high, levels ,of ammonia, and phosphorus. Releasing these nutrients to a receiving stream may lead to eutrophication. eutrophication - a process by which pollution from such sources as sewage effluent or leachate from fertilized fields

Nutrients in Wastewater - Swim Sustain Water
Nutrients in Wastewater - Swim Sustain Water

Nitrogen, • Because ,nitrogen, is an essential building block in the synthesis of protein, ,nitrogen, data will be required to evaluate the treat ability of ,wastewater, by biological processes. • Insufficient ,nitrogen, can necessitate the addition of ,nitrogen, to make the ,wastewater, treatable. • Where control of alga growth in the receiving water is

How to reduce or remove ammoniacal nitrogen from ...
How to reduce or remove ammoniacal nitrogen from ...

ammonia, strippers can be used to reduce the ,ammonia, content in ,waste, water. first we have to raise the pH of ,waste, water around 11.0, as stripping tower give max efficiency in range of 10.8-11.5 ...

Struvite Precipitation for Ammonia Nitrogen Removal in 7 ...
Struvite Precipitation for Ammonia Nitrogen Removal in 7 ...

7-Aminocephalosporanic acid wastewater usually contains high concentrations of ammonium (NH 4+ -N), which is known to inhibit nitrification during biological treatment processes. Chemical precipitation is a useful technology to remove ammonium from wastewater.

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

Biological nitrification is the microbe-mediated process of oxidizing ammonia to remove nitrogenous compounds from wastewaters. Domestic sewage typically contains, 20 to 40 mg/L of ammonia nitrogen, (NH 4- N). Organic matter containing nitrogen, e.g., protein and nucleic acid, also biodegrades to …

Nitrogen removal from wastewater with high ammonia ...
Nitrogen removal from wastewater with high ammonia ...

1/1/1997, · Nitrobacter bacteria responsible for nitrite nitrogen oxidation are sensitive to free ainmonium. The presence of free, ammonium, depended on a high ammonia nitrogen concentration in wastewater and its pH. It was the pH of the, wastewater, that was the decisive parameter in Nitrobacter bacteria activity inhibition in stable temperatures and at stable ...

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