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COD in acid wastewater

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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COD in acid wastewater
Determination of Heavy Metals in Wastewater and Their ...
Determination of Heavy Metals in Wastewater and Their ...

3 ml H2O2 below 80°C for 1 ,h, until a clear solution was observed. The clear solution was diluted to 100 ml volumetric flask with distilled water and blank digestion was also carried out in the same way (Birtukan and Gebregziabher, 2014). The blank solution contained all reagents except ,wastewater,. All samples were digested in triplicates.

The solution for sulphuric acid in wastewater | Almeco
The solution for sulphuric acid in wastewater | Almeco

After treatment by the anaerobic system, the water contains biogas containing hydrogen sulphide (H2S). Through the water that has to leave the factories, dissolved biogas sometimes escapes into the sewer. The problem with hydrogen sulphide is that it converts into sulphuric acid in contact with water, which has a corrosive character.

Photocatalytic treatment of industrial wastewater ...
Photocatalytic treatment of industrial wastewater ...

Photocatalytic treatment of industrial wastewater containing chromium, as a model pollutant-effect on process parameters and kinetically studies ... Finally, the combination of TiO 2 /citric ,acid,/,H, 2 O 2 /UV result was observed more efficient than the TiO 2 /citric ,acid, and TiO 2 /,H, 2 O 2 /UV processes in the solutions. REFERENCES. 1. G.

Treatment of Industrial Wastewater by Organic Wastes
Treatment of Industrial Wastewater by Organic Wastes

chemistry of ,industrial wastewater, treatment process in the bioreactors is summarized below. pH The pH of input ,industrial wastewater, in the bioreactors was 5.58 and it increased up to 8.01, 7.98, 8.18 and 8.39 in the bioreactor A, B, C and D respectively. The organic substrate in the bioreactors plays a very important role in raising pH.

Electrochemical Degradation of Industrial Dyes in ...
Electrochemical Degradation of Industrial Dyes in ...

electrochemical coagulation and surface-electrooxidation processes) of artificially-prepared ,industrial wastewater containing, small amounts of two technologically important dyes, namely ,Acid, Mixture (,Acid, Violet 90 and ,Acid, Red 357) or Disperse Red 167 (see their chemical structures in …

Industrial wastewater treatment and valorization for the ...
Industrial wastewater treatment and valorization for the ...

The recovered ,acid, discharge rate was 2 m 3 /,h, with an average concentration of 2%, which represented a contribution of 40 kg/,h H, 2 SO 4, equivalent to 40/98 = 0.41 kmoles of ,H, 2 SO 4. Based on molar equivalents for the reactions, the amount of NH 3 needed would be 2 x 0.41 x 17 = 13.94 kg, which, being diluted to 5%, would have a flow of: 13,94/0,05 = 0,28 m3/,h, approximately of ammonia effluent.

Treatment of Industrial Wastewater by Organic Wastes
Treatment of Industrial Wastewater by Organic Wastes

chemistry of ,industrial wastewater, treatment process in the bioreactors is summarized below. pH The pH of input ,industrial wastewater, in the bioreactors was 5.58 and it increased up to 8.01, 7.98, 8.18 and 8.39 in the bioreactor A, B, C and D respectively. The organic substrate in the bioreactors plays a very important role in raising pH.

Photocatalytic treatment of industrial wastewater ...
Photocatalytic treatment of industrial wastewater ...

Photocatalytic treatment of industrial wastewater containing chromium, as a model pollutant-effect on process parameters and kinetically studies ... Finally, the combination of TiO 2 /citric ,acid,/,H, 2 O 2 /UV result was observed more efficient than the TiO 2 /citric ,acid, and TiO 2 /,H, 2 O 2 /UV processes in the solutions. REFERENCES. 1. G.

Catalytic oxidative treatment of wastewater containing H ...
Catalytic oxidative treatment of wastewater containing H ...

Ni-Zn/γ-Al_2O_3 catalyst was prepared by impregnation and tested for catalytic oxidative treatment of ,H acid wastewater, by chlorine dioxide.Effects of initial pH, quantity of chlorine dioxide, dosage of the catalyst,reaction time and repeated use of the catalyst on TOC removal rate for ,H acid wastewater, were investigated. The optimal condition was obtained as follows:pH of neutral or slightly ...

Chlorine and Chlorinated Compounds Removal from Industrial ...
Chlorine and Chlorinated Compounds Removal from Industrial ...

chlorinated compounds from ,industrial wastewater, are reviewed in this article. ... are oxidized by chlorine forming oxidation products such as hypobromous ,acid, (HOBr) and iodine (I 2). ... when solutions ,containing, bromide or iodide (e.g., seawater) are the subject of analysis.

Study on Treatment Methods of Phenol in industrial Wastewater
Study on Treatment Methods of Phenol in industrial Wastewater

suitable for many ,industrial wastewater, treatments which are difficult to deal with. Qiao Cong [2] treated the phenol refining ,waste water, by Photo/Fenton/C. 2. O. 42-system. The results show that, when pH is 3, the amount of oxalic ,acid, sodium, FeSO. 4.7H. 2. O and 30% ,H,. 2. O. 2. are appropriate, water bath tem-

Low-temperature inhibition of the activated sludge process ...
Low-temperature inhibition of the activated sludge process ...

Low-temperature inhibition of the activated sludge process by an ,industrial, discharge ,containing, the azo dye ,acid, black 1. Martin RW Jr(1), Robert Baillod C, Mihelcic JR. Author information: (1)Department of Civil and Environmental Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA.

Anaerobic Industrial Wastewater Treatment;
Anaerobic Industrial Wastewater Treatment;

etc. Table 1 gives an overview of application in the most important ,industrial, sectors. Table 1. Application of anaerobic technology to ,industrial wastewater Industrial, sector ,Wastewater, Agro-food industry Sugar, potato, starch, yeast, pectin, citric ,acid,, cannery, confectionary, fruit, …

BARIUM CARBONATE TREATMENT OF SULFURIC ACID WASTEWATER ...
BARIUM CARBONATE TREATMENT OF SULFURIC ACID WASTEWATER ...

Sulfuric ,Acid Wastewater, at Constant Paddle Speed . 59 10. ... ,industrial, health, since it is indispensable in many industries." ... Proper treatment of waste effluents ,containing, sulfuric ,acid, is necessary before discharging the ,wastewater, into natural bodies

Study on Treatment Methods of Phenol in industrial Wastewater
Study on Treatment Methods of Phenol in industrial Wastewater

suitable for many ,industrial wastewater, treatments which are difficult to deal with. Qiao Cong [2] treated the phenol refining ,waste water, by Photo/Fenton/C. 2. O. 42-system. The results show that, when pH is 3, the amount of oxalic ,acid, sodium, FeSO. 4.7H. 2. O and 30% ,H,. 2. O. 2. are appropriate, water bath tem-

Bioremediation and Detoxification of Synthetic Wastewater ...
Bioremediation and Detoxification of Synthetic Wastewater ...

The basic composition of the synthetic ,wastewater, medium was (g/L); (NH 4) 2 SO 4 0.28, NH 4 Cl 0.23, KH 2 PO 4 0.067, MgSO 4 7H 2 O 0.04, CaCl 2 2H 2 O 0.022, FeCl 3 6H 2 O 0.005, NaCl 0.15, NaHCO 3 1.0, and 1 mL/L of a trace element solution ,containing, (g/L); ZnSO 4 7H 2 O 0.01, MnCl 2 4H 2 O 0.1, CuSO 4 5H 2 O 0.392, CoCl 2 6H 2 O 0.248, NaB 4 O 7 10H 2 O 0.177, and NiCl 2 6H 2 O 0.02.

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