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Acid cleaning wastewater containing chromium and fluorine

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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Acid cleaning wastewater containing chromium and fluorine
Recent Development in Ammonia Stripping Process for ...
Recent Development in Ammonia Stripping Process for ...

Ammonia stripping process is suitable for treating wastewater that contains high concentration of ammonia and toxic compounds with the merits of simpler operation, high efficiency, and excellent treatment stability, thus displaying an exceptional application potential for industrial wastewater treatment.

Nitrogen in Sewage Systems: The Chemical Element & Human ...
Nitrogen in Sewage Systems: The Chemical Element & Human ...

Sources of ,Nitrogen, in ,Wastewater, Septic systems collect organic ,nitrogen,: urea, uric ,acid, and creatinine from urine and feces, and other organic forms from food waste. In the septic tank and in the leaching field, organic ,nitrogen, is mineralized to ,ammonia, and ammonium, which in turn is nitrified to nitrite and nitrate.

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

Because organic ,nitrogen, is a very small component of Total ,Nitrogen, in fully nitrified ,wastewater, effluent, the standard ChemScan method will use the sum of the individual analysis results for ,ammonia,-,nitrogen, (See Method #4l), nitrate-,nitrogen, (See Method #56) and nitrite-,nitrogen, (See Method #57).

Ammonia Removal using an Ammonia Scrubber
Ammonia Removal using an Ammonia Scrubber

25/5/2017, · ,Ammonia, is secreted from the kidneys to neutralize ,acid,. In the Solar System ,ammonia, can be found on Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. ,Ammonia, is manufactured from ,nitrogen, and hydrogen in a process called the Haber Process. The Haber Process combines ,nitrogen, from the air with hydrogen from natural gas (methane) to create ,ammonia,.

Treatment Technologies for Organic Wastewater | IntechOpen
Treatment Technologies for Organic Wastewater | IntechOpen

17/11/2011, · Hydrogen was produced at a rate of 0.001 L hydrogen/h/L culture in 20% dilution of the ,wastewater,. To adjust the carbon ,concentration, to 70 mM and ,nitrogen concentration, to 2 mM, sucrose or L-malic ,acid, was added as carbon source and sodium glutamate was added as ,nitrogen, source to the 20% dilution of SRWW.

REMOVAL OF THE HIGH AMMONIA NITROGEN CONCENTRATION …
REMOVAL OF THE HIGH AMMONIA NITROGEN CONCENTRATION …

The average ,concentration, of the ,ammonia nitrogen, in the influent varied from 491 mg NH4 + - N/L to 640 mg NH4 + - N/L, with exception of the reference bioreactor (MBR5), which was fed by the ,wastewater, with ,ammonia nitrogen concentration, below 100 mg NH4 + - N/L. The nitrification process in this case was full and did not meet any obstacles.

Efficient conversion of organic nitrogenous wastewater to ...
Efficient conversion of organic nitrogenous wastewater to ...

Proteinous ,wastewater, (total ,nitrogen, [TN] ,concentration,: approximately 340 mg l −1) was added daily to reactor A at a rate of ≥200 l day −1. After a 24 h incubation, part of the treated ,wastewater, was moved to reactor B at a rate of ≥100 l day −1 , from which the same amount of the nitrate solution that was produced was harvested before the addition of the input from reactor A.

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

Nitrification with high nitrite accumulation for the ...
Nitrification with high nitrite accumulation for the ...

wastewater with high ammonia concentration. During the start-up a pH of 7.85 and a DO of 5.5mg/L were used. The reactor was operated until stable operation was achieved at final nitrogen loading rate (NLR) of 3.3kgN– NH 4 +/m3 d with an influent ammonia concentration of 610mg N–NH 4 +/L.

Kjeldahl method - Wikipedia
Kjeldahl method - Wikipedia

Ammonia, bubbles through the standard ,acid, solution and reacts back to ammonium salts with the weak or strong ,acid,. Ammonium ion ,concentration, in the ,acid, solution, and thus the amount of ,nitrogen, in the sample, is measured via titration. If boric ,acid, (or some other weak ,acid,) was used, direct ,acid,–base titration is done with a strong ,acid, of ...

Nitrification with high nitrite accumulation for the ...
Nitrification with high nitrite accumulation for the ...

wastewater, with ,high ammonia concentration,. During the start-up a pH of 7.85 and a DO of 5.5mg/L were used. The reactor was operated until stable operation was achieved at final ,nitrogen, loading rate (NLR) of 3.3kgN– NH 4 +/m3 d with an influent ,ammonia concentration, of 610mg N–NH 4 +/L.

Titration - Wikipedia
Titration - Wikipedia

Kjeldahl method: a measure of ,nitrogen, content in a sample. Organic ,nitrogen, is digested into ,ammonia, with sulfuric ,acid, and potassium sulfate. Finally, ,ammonia, is back titrated with boric ,acid, and then sodium carbonate. ,Acid, value: the mass in milligrams of potassium hydroxide (KOH) required to titrate fully an ,acid, in one gram of sample.

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. In this paper, the removal of ammonium from 7-aminocephalosporanic acid wastewater was ...

Inhibition of Nitrification by Ammonia and Nitrous Acid
Inhibition of Nitrification by Ammonia and Nitrous Acid

especially in solutions or wastewater hav ing high organic or ammonia nitrogen con centrations. It was postulated that the in hibition was related to concentrations of un-ionized ammonia [free ammonia, NH3 (fa)] and un-ionized nitrous acid [free nitrous acid, HN02(fna)]. The reactions in the nitrification process (Figure 3) illustrate the factors involved.

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

TKN is the sum of organic nitrogen and ammonia nitrogen. The concentration of TKN in typical domestic wastewater ranges from 20 to 85 mg/L as Nitrogen. In the separate-stage process, carbonaceous oxidation and nitrification occur in separate tanks, and the BOD 5 /TKN ratio is typically between 1 and 3.

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