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Treatment of acid wastewater by ozone

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 acid wastewater by ozone
Enhanced phosphorus removal by microbial-collaborating ...
Enhanced phosphorus removal by microbial-collaborating ...

The technology still needs further development because of issues including: (1) different ,sludge, ages between the nitrifying bacteria and the phosphate-accumulating organisms (PAOs), which cause their competition for matrix (Thomas et al. 2003); (2) unstable P removal efficiency, which leads to the effluent quality not meeting the discharge standard; therefore, it becomes common in practice that the effluent …

Technology for Advanced Treatment of Rural Sewerage in Japan
Technology for Advanced Treatment of Rural Sewerage in Japan

dephosphorization, method is applied, the values increase by 2-4 times compared with ,sludge, processing using the conventional biological reaction method. Thus, it is possible to obtain supernatant water with a low phosphorus con­ centration by carrying out solid-liquid separa­ tion under conditions where the activated ,sludge

Enhanced phosphorus removal by microbial-collaborating ...
Enhanced phosphorus removal by microbial-collaborating ...

Activated ,sludge, cake, weighing 5.33 g, with moisture content of 75% was added to 2# reactor to make the ,sludge, concentration reach 4 g/L, and the same amounts of sponge iron as in 1# reactor and activated ,sludge, as in 2# reactor were added to 3# reactor. Then the synthetic ,wastewater, was added to the 400 mL mark in all reactors.

Phosphorus Recovery by Crystallization | IntechOpen
Phosphorus Recovery by Crystallization | IntechOpen

10/7/2018, · Even if the ammonium ion concentration increased, the phosphorus removal decreased when the phosphoric ,acid, concentration decreased to 80 mg/L. Weijia et al. also considered the addition of magnesium and ammonium to phosphorus recovery using a bubble column, because the phosphorus and ammonium concentrations of the activated ,sludge, secondary treatment are reduced by nitrification …

Effects of A ON Process on Denitrifying Dephosphatation
Effects of A ON Process on Denitrifying Dephosphatation

① Exchangeable volume ratio in activated ,sludge, process was low (moisture content of suspended ,sludge, was high), and a large number of NH4 +-N remained in ,sludge,, which affected the removal rate of TN. The measure we took was that activated ,sludge, process was replaced by biomembrane process as the main reactor for denitrifying dephosphatation.

(PDF) The Effect on Activated Sludge of Chemical ...
(PDF) The Effect on Activated Sludge of Chemical ...

The Effect on Activated ,Sludge, of Chemical Coagulants Applied in Synchronization ,Dephosphorization,. January 2013; Journal of Environmental Protection 04(12):1423-1427

Science of the Total Environment
Science of the Total Environment

been used as an alternative ,dephosphorization, reagent (Hosni et al., 2008). Whether it could serve to ,reduce, the PO 4 3−-P in WAS fermenta-tion liquids is unknown. Therefore, the main purpose of this study is to investigate the feasi-bility ofutilizing Ca(ClO) 2 asanadditive toimprovetheperformance of WAS fermentation. The influence of Ca(ClO)

Advantages Of FRP Wastewater Development Prospects - The ...
Advantages Of FRP Wastewater Development Prospects - The ...

The chemically-enhanced biological phosphorus removal sewage treatment process mainly removes organic pollutants and various forms of phosphorus in the sewage, and the sewage treatment process integrates chemical phosphorus removal and biological phosphorus removal, and generates anaerobic digestion of activated ,sludge, in the biological system.

The Effect on Activated Sludge of Chemical Coagulants ...
The Effect on Activated Sludge of Chemical Coagulants ...

The Effect on Activated ,Sludge, of Chemical Coagulants Applied in Synchronization ,Dephosphorization, . #activated ,sludge, #Synchronization ,Dephosphorization, …

DEPHOSPHORIZATION MATERIAL DEPHOSPHORIZATION …
DEPHOSPHORIZATION MATERIAL DEPHOSPHORIZATION …

The ,dephosphorization, apparatus removes phosphorus from phosphorus-containing ,wastewater,, such as sewage water, based on the formula 10Ca 2+ +6PO 4 3− +2OH − →Ca 10 (PO 4) 6 (OH) 2 and recovers through the recovery means a ,dephosphorization, by-product that precipitates as crystals as a …

Technology for Advanced Treatment of Rural Sewerage in Japan
Technology for Advanced Treatment of Rural Sewerage in Japan

dephosphorization, method is applied, the values increase by 2-4 times compared with ,sludge, processing using the conventional biological reaction method. Thus, it is possible to obtain supernatant water with a low phosphorus con­ centration by carrying out solid-liquid separa­ tion under conditions where the activated ,sludge

Phosphorus in Water Quality and Waste Management | IntechOpen
Phosphorus in Water Quality and Waste Management | IntechOpen

27/10/2010, · During mechanical treatment phosphorus contained in the particulate material is removed from the waste water together with primary sludge which results in a TP removal of 10 - 15 %. Biological incorporation, enhanced biological P-removal and chemical precipitation are state-of-the-art processes to reliably reduce P-load from waste water.

Phosphorus Recovery by Crystallization | IntechOpen
Phosphorus Recovery by Crystallization | IntechOpen

10/7/2018, · Even if the ammonium ion concentration increased, the phosphorus removal decreased when the phosphoric ,acid, concentration decreased to 80 mg/L. Weijia et al. also considered the addition of magnesium and ammonium to phosphorus recovery using a bubble column, because the phosphorus and ammonium concentrations of the activated ,sludge, secondary treatment are reduced by nitrification …

Liquid–liquid extraction of phosphorus from sulfuric acid ...
Liquid–liquid extraction of phosphorus from sulfuric acid ...

The LLE of phosphorus from sulfuric ,acid, solution by using benzyl dimethyl amine (BDMA) in kerosene has been investigated in this study. Although a few studies used BDMA to remove phosphorus from ,wastewater, [9, 18], they were not systematic and did not deal with solutions with high phosphorus content (dealt with only 30 mg·L −1).

Enhanced volatile fatty acids production from waste ...
Enhanced volatile fatty acids production from waste ...

10/4/2020, · An efficient approach for synchronous volatile fatty acids (VFAs) promotion, phosphorus fixation and pathogens inactivation during waste activated ,sludge, (WAS) anaerobic fermentation was achieved with optimal calcium hypochlorite (Ca (ClO) 2) stimulation.

Effects of ZnO Nanoparticles on Wastewater Biological ...
Effects of ZnO Nanoparticles on Wastewater Biological ...

However, the potential impacts of ZnO NPs on ,wastewater, nitrogen and phosphorus removal with an activated ,sludge, process are unknown. In this paper, short-term exposure experiments were conducted to determine whether ZnO NPs caused adverse impacts on ,biological nitrogen and phosphorus removal, in the unacclimated anaerobic-low dissolved oxygen sequencing batch reactor.

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