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Design of packed distillation column for recovering 26% methanol from acid wastewater of a pharmaceutical factory in Xinyang City

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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Design of packed distillation column for recovering 26% methanol from acid wastewater of a pharmaceutical factory in Xinyang City
Water Handbook - Clarification | SUEZ
Water Handbook - Clarification | SUEZ

Depending on initial raw water alkalinity and ,pH,, an alkali such as lime or caustic must be added to counteract ,the pH, depression of the primary coagulant. Iron and ,aluminum, hydrolysis products play a significant role in the coagulation process, especially in cases where low-turbidity influent waters benefit from the presence of additional collision surface areas.

Effect of calcium ions on aluminum recovery by fluidized ...
Effect of calcium ions on aluminum recovery by fluidized ...

When ,the pH, of a solution having [Al3+] ions is increased with adequate supply of [OH-], dissolved species of [Al3+] and [OH-] are formed, and precipitation of Al(OH) 3 occured. Al(OH) 3 is stable between ,pH, 4 to 9.5. and its solubility increases ,with excess, NaOH. Under acidic conditions, formation of [Al3+] is visible, and AlOOH is

Water Handbook - Clarification | SUEZ
Water Handbook - Clarification | SUEZ

Depending on initial raw water alkalinity and pH, an alkali such as lime or caustic must be added to counteract the pH depression of the primary coagulant. Iron and aluminum hydrolysis products play a significant role in the coagulation process, especially in cases where low-turbidity influent waters benefit from the presence of additional collision surface areas.

Aluminum formate (AF): Synthesis characterization and ...
Aluminum formate (AF): Synthesis characterization and ...

1/12/2018, · To weaken the effect of ,pH, change on coagulation behavior, the UV 608 and zeta potential data were measured after ,adjusting the pH, to 8.16 ± 0.05 (initial ,pH, of raw water). The interaction between coagulants and coagulant aid was studied by variance analysis, and the optimal dosages of coagulants and coagulant aid were ascertained by a 3D surface model.

Methods for Chemical Analysis of Water and Wastes
Methods for Chemical Analysis of Water and Wastes

Procedure 8 1 Prepare two 100 ml volumes of sample by maintaining the original ,pH, of one aliquot and ,adjusting, the second aliquot as necessary to ,pH, 7 6 with sulfunc ,acid, (7 2) or sodium hydroxide (7 3) 8 2 Filter samples to remove turbidity through a 0 45 u membrane filter, glass fiber filter or other suitable media (see interferences 3 1) 8 3 Use distilled water to set the transmittance at 100% and then …

Cooling water problems and solutions - SlideShare
Cooling water problems and solutions - SlideShare

Normal practice is to maintain a slightly positive LSI number, +.2to +.5, (RSI between 5.0 and 6.0) when utilizing pH adjustment by acid addition and add somechemical scale inhibitor to cope with the resultant slight tendency to scale.Caution - Addition of excessive acid to the cooling water results in depressed pH values andextremely rapid corrosion of all system metals.

JP2011206757A - Wastewater treatment method for wastewater ...
JP2011206757A - Wastewater treatment method for wastewater ...

SOLUTION: A step of adding acid or alkali to sulfuric, acid acid wastewater, adjusting pH to, 4.0 or more and 6.0 or less and separating the solution after dealumination, and aluminum, starch, and...

Methods for Chemical Analysis of Water and Wastes
Methods for Chemical Analysis of Water and Wastes

Procedure 8 1 Prepare two 100 ml volumes of sample by maintaining the original ,pH, of one aliquot and ,adjusting, the second aliquot as necessary to ,pH, 7 6 with sulfunc ,acid, (7 2) or sodium hydroxide (7 3) 8 2 Filter samples to remove turbidity through a 0 45 u membrane filter, glass fiber filter or other suitable media (see interferences 3 1) 8 3 Use distilled water to set the transmittance at 100% and then …

Dissolved Aluminum in Anodizing bath -- How Much to Have ...
Dissolved Aluminum in Anodizing bath -- How Much to Have ...

6/1/2021, · Start by pH stabilising your KF. Just, put a couple drops of, PTH indicator, in, the bottle. Shake it. It will turn pink. Add one drop of very diluted sulfuric acid- Like, put a couple drops of, the fresh 98% in 10 mL deionized water to use for this- NOT out of the tank. Shake the KF bottle again. Repeat until it …

Removal of Microbeads from Wastewater Using ...
Removal of Microbeads from Wastewater Using ...

Nevertheless, after 60 min of treatment, samples at all ,pH, ranges expressed successful removal with final removal efficiencies of >85%. From this data, the characteristic optimum ,pH, range for this ,wastewater, analogue is found to be ,pH, = 3–10, indicating that EC is suitable for removing microbeads from ,wastewater, streams with a wide range of ,pH, values. ,The pH, value of the ,wastewater, depends on its origin. For example, the domestic/municipal ,wastewater, usually has a ,pH, …

how do I deal with standing sulfuric acid in the basement ...
how do I deal with standing sulfuric acid in the basement ...

5/8/2008, · I witnessed a customer pour a competitors sulfuric ,acid, product ,into, backed up ,sink,. As soon as it hit the ,water, it resulted in a tremendous back splash that burned the employee on his hands and face. I had no idea what he was pouring until it was too late. Sulfuric ,acid can, erupt violently when added to ,water,.

Ch.3. water pollution
Ch.3. water pollution

excess, silver ,ion, as Ag(OH) 2 ... The total calcium and magnesium content of the water sample can be determined by ,adjusting the pH, of the sample to ,pH,= 10 by using NH 4 Cl/NH 4 OH buffer , then titrated with standard ... strong ,acid, in presence of indicator such as ,ph,.,ph, or M.O.

Coagulation and Flocculation in Water and Wastewater ...
Coagulation and Flocculation in Water and Wastewater ...

Fluoride removal using ,aluminum, based coagulants is strongly affected by ,pH, and ,aluminum, dosage. Optimum ,pH, varies from 6.0 to 7.5. A further factor is the residual ,aluminum, remaining after treatment. Higher ,aluminum, dosages often produce lower residual ,aluminum, due to adsorption of fluoride to ,aluminum, hydroxide flocs, rather than producing ,aluminum,-fluoride complexes that remain in solution.

Removal of Microbeads from Wastewater Using ...
Removal of Microbeads from Wastewater Using ...

Nevertheless, after 60 min of treatment, samples at all ,pH, ranges expressed successful removal with final removal efficiencies of >85%. From this data, the characteristic optimum ,pH, range for this ,wastewater, analogue is found to be ,pH, = 3–10, indicating that EC is suitable for removing microbeads from ,wastewater, streams with a wide range of ,pH, values. ,The pH, value of the ,wastewater, depends on its origin. For example, the domestic/municipal ,wastewater, usually has a ,pH, …

Cooling water problems and solutions - SlideShare
Cooling water problems and solutions - SlideShare

8/3/2013, · Normal practice is to maintain a slightly positive LSI number, +.2to +.5, (RSI between 5.0 and 6.0) when utilizing ,pH, adjustment by ,acid, addition and add somechemical scale inhibitor to cope with the resultant slight tendency to scale.Caution - Addition of excessive ,acid, to the cooling water results in depressed ,pH, values andextremely rapid corrosion of all system metals.

Ch.3. water pollution
Ch.3. water pollution

excess, silver ,ion, as Ag(OH) 2 ... The total calcium and magnesium content of the water sample can be determined by ,adjusting the pH, of the sample to ,pH,= 10 by using NH 4 Cl/NH 4 OH buffer , then titrated with standard ... strong ,acid, in presence of indicator such as ,ph,.,ph, or M.O.

Influences of Environmental Factors on Lanthanum/Aluminum ...
Influences of Environmental Factors on Lanthanum/Aluminum ...

fect of ,pH, was investigated by ,adjusting the pH, from 2.0 to 12.0using 0.1 MNaOH and HCl solutions,with an initial phosphorus concentration of 10 mg/L. Finally, the effect of other competitive anions (Cl− and SO 4 2−) was studied at 0, 0.1, 0.5, 1.0, and 2.0 mmol/L with an initial phosphorus concentration of 10 mg/L. 2.4 Analytical Methods

(PDF) Recovery of Iron and Aluminum from Acid Mine ...
(PDF) Recovery of Iron and Aluminum from Acid Mine ...

AMD water after iron removal was used as source water for ,aluminum, recovery. ,Aluminum, precipitated best at ,pH, 6.0-7.0 with ,aluminum, recovery > 97.2% and precipitate purity > 92.1%.

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