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Cyanide wastewater and 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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Cyanide wastewater and acid wastewater
Precipitation treatment of effluent acidic wastewater from ...
Precipitation treatment of effluent acidic wastewater from ...

The results showed that the removal percentage of fluoride was, 80.6%, with an effluent concentration of, 9.7 mg/L., the author did not recommend this technique to be employed to treat waste water for domestic purpose, since it cannot bring fluoride within permissible limit (1.5 mg/L) and also increases the pH of treated water.Another technique was used for removing fluoride ion from an aqueous solution [12].

Removal of Chloride Ions from Strongly Acidic Wastewater ...
Removal of Chloride Ions from Strongly Acidic Wastewater ...

Strongly acidic wastewater, which is usually generated from nonferrous metal smelting industries, has the ability to be recycled as sulfuric acid. Before this wastewater is recycled, the removal of chloride ions is necessary to improve the quality of the recycled sulfuric acid.

Fluoride contamination in estuary water villages located ...
Fluoride contamination in estuary water villages located ...

Presence of ,high concentration, of ,fluoride, in drinking water causes dental and skeletal fluorosis in humans in ... hydrogen ,fluoride, (HF) in an ,acidic, stomach and out of this upto 40 % is absorbed by stomach or intestine [3]. ... ,fluoride, chemicals [25]. The ,wastewater, from such industries contains ,fluoride, ranging from several hundred to

Electrochemical decomposition of fluorinated wetting ...
Electrochemical decomposition of fluorinated wetting ...

The ,concentration, of none of the other reference target PFAS increased. ,Fluoride, could not be detected in the treated ,acidic, electrolyte, which is expected since the HF is volatile at low pH. The hexchrome-containing ,wastewater, has a pH between 1.0 and 1.2 and, in that ,acidic, solution, ,fluoride, is not stable.

Precipitation Methods Using Calcium-Containing Ores for ...
Precipitation Methods Using Calcium-Containing Ores for ...

The fluoride concentration in industrial wastewater generally reaches up to hundreds or even thousands of milligrams of per liter and exceeds drastically the WHO (World Health Organization) guideline value of 1.5 mg/L in drinking water [15,16].

15 types of industrial wastewater treatment processes ...
15 types of industrial wastewater treatment processes ...

Due to the large differences in oil ,concentration, in ,wastewater, discharged from different ,industrial, sectors, such as ,wastewater, generated during the refining process, the oil content is about 150 ~ 1000mg / L, the tar content in coking ,wastewater, is about 500 ~ 800mg / L, and the ,wastewater, from the gas generation station is discharged into the ,wastewater,.

Fluoride Removal from Water by various techniques : Review
Fluoride Removal from Water by various techniques : Review

defluoridation of industrial wastewater observed that the rejection of fluoride ion was higher thanregularly98%, considering that the RO membrane was completely recovered after every arrangement of analyses [15]. Berhanu Assefa et al. concentrated the fluoride retention of RO membranes of Ethiopian Rift Region were in the

Fluoride Reduction / HF - Industrial Waste Treatment
Fluoride Reduction / HF - Industrial Waste Treatment

A white paper by Wastech Controls & Engineering, Inc. HF, or Hydrofluoric Acid, is a high-volume chemical that is extremely corrosive. It is miscible with water with the release of heat and an acrid, irritating odor, forming a clear, colorless liquid. HF is a significant health hazard as a liquid, even in diluted quantities.

(PDF) Treatment of high fluoride concentration water by ...
(PDF) Treatment of high fluoride concentration water by ...

Although the theoretical solubility of CaF 2 is 17 mg/L at 25 1C in water (Butler, 1964;Toyoda and Taira, 2000), CaF 2 precipitation can only reduce the ,fluoride concentration, to 10-20 mg/L in practice (Reardon and Wang, 2000). Depending on the discharge standards (p10 mg/L) for ,industrial wastewater,, a subsequent step may be necessary.

Removal of Arsenic from Strongly Acidic Wastewater Using ...
Removal of Arsenic from Strongly Acidic Wastewater Using ...

Strongly acidic wastewater (H 2 SO 4) with a high arsenic concentration is produced by many industries. The removal of arsenic by traditional sulfide (e.g., Na 2 S, FeS) from strongly acidic wastewater introduces cations (Na + and Fe 2+ ) to the solution, which may prevent the recycle of acid.

US6645385B2 - System and method for removal of fluoride ...
US6645385B2 - System and method for removal of fluoride ...

The system comprises a reaction tank for processing said ,wastewater, by adding calcium salts, a filtration tank for removing the precipitated ,fluoride, formed in the reaction tank, a single ,fluoride, electrode disposed at the reaction tank for measuring a ,concentration, of ,fluoride, in the influent ,wastewater, and providing an output signal, and a programmable controller for controlling addition of …

Behavior Analysis of pH Dissolved Aluminum and Fluoride ...
Behavior Analysis of pH Dissolved Aluminum and Fluoride ...

containing ,high concentration, of ,fluoride, compared with that of the AMD at Station M1 of the abandoned Nishiazuma Mine (See Table 1). ,Fluoride, was reported to be emitted as hydrogen ,fluoride, from volcanoes and then removed from the atmosphere by the deposition on land or surface water [18]. Consequently, the ,high, concentrations of ,fluoride, in Ara

Fluoride contamination in estuary water villages located ...
Fluoride contamination in estuary water villages located ...

Presence of ,high concentration, of ,fluoride, in drinking water causes dental and skeletal fluorosis in humans in ... hydrogen ,fluoride, (HF) in an acidic stomach and out of this upto 40 % is absorbed by stomach or intestine [3]. ... ,fluoride, chemicals [25]. The ,wastewater, from such industries contains ,fluoride, ranging from several hundred to

Fluoride contamination in estuary water villages located ...
Fluoride contamination in estuary water villages located ...

Presence of ,high concentration, of ,fluoride, in drinking water causes dental and skeletal fluorosis in humans in ... hydrogen ,fluoride, (HF) in an ,acidic, stomach and out of this upto 40 % is absorbed by stomach or intestine [3]. ... ,fluoride, chemicals [25]. The ,wastewater, from such industries contains ,fluoride, ranging from several hundred to

Behavior Analysis of pH Dissolved Aluminum and Fluoride ...
Behavior Analysis of pH Dissolved Aluminum and Fluoride ...

containing ,high concentration, of ,fluoride, compared with that of the AMD at Station M1 of the abandoned Nishiazuma Mine (See Table 1). ,Fluoride, was reported to be emitted as hydrogen ,fluoride, from volcanoes and then removed from the atmosphere by the deposition on land or surface water [18]. Consequently, the ,high, concentrations of ,fluoride, in Ara

Fluoride Removal from Aluminium Finishing Wastewater by ...
Fluoride Removal from Aluminium Finishing Wastewater by ...

Disposal of industrial wastewaters containing excess concentration of fluoride to surface and ground waters can cause several health hazards. Effluents containing fluoride need treatment to reduce their concentration to disposable values before being discharged into public sewage.

(PDF) Treatment of high fluoride concentration water by ...
(PDF) Treatment of high fluoride concentration water by ...

Although the theoretical solubility of CaF 2 is 17 mg/L at 25 1C in water (Butler, 1964;Toyoda and Taira, 2000), CaF 2 precipitation can only reduce the fluoride concentration to 10-20 mg/L in practice (Reardon and Wang, 2000). Depending on the discharge standards (p10 mg/L) for industrial wastewater, a subsequent step may be necessary.

Electrochemical decomposition of fluorinated wetting ...
Electrochemical decomposition of fluorinated wetting ...

The ,concentration, of none of the other reference target PFAS increased. ,Fluoride, could not be detected in the treated ,acidic, electrolyte, which is expected since the HF is volatile at low pH. The hexchrome-containing ,wastewater, has a pH between 1.0 and 1.2 and, in that ,acidic, solution, ,fluoride, is not stable.

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