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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
Decolorization of Color Index Acid Orange 20 buffer ...
Decolorization of Color Index Acid Orange 20 buffer ...

beads (PAN-beads) for decolorization of Color Index (C. I.) ,Acid Orange, 20 (AO20) in aqueous solution. Sodium hydroxide and hydrochloric ,acid, were used to ,treat, PAN-beads to obtain carboxyl groups, followed by being modified with ethanediamine to get more …

Electrochemical Oxidation Degradation of Methyl Orange ...
Electrochemical Oxidation Degradation of Methyl Orange ...

Textile ,wastewater, usually contains some contaminants, such as acids, bases, dissolved solids, toxic compounds and coloured materials. These contaminants must be removed before the ,wastewater, can be discharged. There are many chemical, biological, and physicochemical methods have been used to ,treat, dye-containing wastewaters[1,2].

Wastewater Treatment Chemicals for High Metals Concentrations
Wastewater Treatment Chemicals for High Metals Concentrations

Once reduction has occurred the color will also change from orange to blue and the pH can then be adjusted up using caustic soda to 9.0-9.5 for the best removal of the trivalent chrome. 2). If you are at a pH > than 2.5 and don’t want to add acid, reduction of hexavalent chrome can be done by the addition of wastewater treatment chemicals.

Efficient Removal of Methyl Orange from Wastewater by ...
Efficient Removal of Methyl Orange from Wastewater by ...

In another study, an environment-friendly sorbent was used as a cheap method to remove textile dyes, especially MO from wastewater, yielding a Q 0 of 44.8 mg. g-1 [34 Wong, V.L.; Tay, S.Y.; Lim, S.S. Enhanced removal of methyl orange from aqueous solution by chitosan-CaCl 2 beads.

Decomposition and Decoloration of Acid Orange 7 using Sub ...
Decomposition and Decoloration of Acid Orange 7 using Sub ...

4-(2-Hydroxynaphthylazo) benzenesulfonic ,acid, sodium salt (,acid orange, 7) was studied as a model for textile wastes using a flow-type sub-critical water system. The experiments were performed in the temperature ranging from 180 to 374 °C at pressure range of 10-25 MPa. The main products from decomposition of ,acid orange, 7 were found to be

STUDY OF C.I. ACID ORANGE 7 REMOVAL IN CONTAMINATED …
STUDY OF C.I. ACID ORANGE 7 REMOVAL IN CONTAMINATED …

aspects, it is important to find a more efficient method to ,treat, the wastewaters polluted with AO7. Advanced oxidation processes are good alternatives/complements for conventional methods and it will be beneficial to be studied. In this work we studied the effect of different parameters on AO7 removal by UV/ZnO, UV/H 2O 2, UV/H 2O

Method to eliminate formic acid and acetic acid from ...
Method to eliminate formic acid and acetic acid from ...

1. Reagents: G.R grade of Na 2 CO 3 and methyl-,orange, indicator. 2. Standardization procedure: a). Accurately weigh two of 0.15.about.0.2 grams of Na 2 CO 3 to oven at 270° C..about.280 ° C. keep 1 hours. b). Respectively remove above solutions into 250 mL of beakers. c). Add 100 mL of D.M.W into the beakers, heat and dissolve these. d).

Indirect Electrochemical Oxidation of Dye Wastewater ...
Indirect Electrochemical Oxidation of Dye Wastewater ...

wastewater,. In this study, the Ti/RuO 2-Pt anode was used to remove the ,Acid Orange, 7 (AO7) from the synthetic dye ,wastewater,. The influence of operating parameters, including NaCl dosage, current density, initial concentration and pH, on the removal of AO7 was studied. The performance of Ti/RuO 2

Method to eliminate formic acid and acetic acid from ...
Method to eliminate formic acid and acetic acid from ...

1. Reagents: G.R grade of Na 2 CO 3 and methyl-orange indicator. 2. Standardization procedure: a). Accurately weigh two of 0.15.about.0.2 grams of Na 2 CO 3 to oven at 270° C..about.280 ° C. keep 1 hours. b). Respectively remove above solutions into 250 mL of beakers. c). Add 100 mL of D.M.W into the beakers, heat and dissolve these. d).

Textile dye wastewater characteristics and constituents of ...
Textile dye wastewater characteristics and constituents of ...

27/11/2018, · Aldoury et al. studied the ability of sequential anaerobic/aerobic reactors for treatment of synthetic wastewater contaminated with two dyes (acid orange 12 and disperse red 17). The wastewater was prepared by mixing potassium hydrogen phosphate, calcium chloride, magnesium sulphate heptahydrate, zinc sulphate, iron(III) chloride, sodium bicarbonate, ammonium chloride, peptone, dyes …

Solving Wastewater Odor Problems: Water Market News: Carus ...
Solving Wastewater Odor Problems: Water Market News: Carus ...

CAIROX CR Tablets are designed to treat odors in municipal and industrial wastewater at remote sites, lift stations, or where feed equipment is not practical. The CR technology is very fast reacting with H 2 S (on the order of seconds) and other organic odor-producing compounds, making it an excellent choice when retention times are very short.

Solving Wastewater Odor Problems: Water Market News: Carus ...
Solving Wastewater Odor Problems: Water Market News: Carus ...

CAIROX CR Tablets are designed to ,treat, odors in municipal and industrial ,wastewater, at remote sites, lift stations, or where feed equipment is not practical. The CR technology is very fast reacting with H 2 S (on the order of seconds) and other organic odor-producing compounds, making it an excellent choice when retention times are very short.

An Acid-Spilling Mine Turned This Colorado River Bright Orange
An Acid-Spilling Mine Turned This Colorado River Bright Orange

Testing will begin today to see how fish and other wildlife has been affected, with a mobile lab arriving on-site to determine the chemical makeup of the spill to decide ,how to treat, it.

Wastewater Laboratory Procedures And Chemistry
Wastewater Laboratory Procedures And Chemistry

If the ,wastewater, is exposed to the atmosphere, H2S will be released and a typical rotten egg odor will be detected. Anaerobic bacteria found in ,wastewater, can liberate H2S from the solids. When the gas leaves the ,wastewater, stream and comes in contact with moisture and oxygen, sulfuric ,acid, is formed which is very corrosive to concrete.

STUDY OF C.I. ACID ORANGE 7 REMOVAL IN CONTAMINATED …
STUDY OF C.I. ACID ORANGE 7 REMOVAL IN CONTAMINATED …

aspects, it is important to find a more efficient method to ,treat, the wastewaters polluted with AO7. Advanced oxidation processes are good alternatives/complements for conventional methods and it will be beneficial to be studied. In this work we studied the effect of different parameters on AO7 removal by UV/ZnO, UV/H 2O 2, UV/H 2O

Electrochemical Oxidation Degradation of Methyl Orange ...
Electrochemical Oxidation Degradation of Methyl Orange ...

Textile ,wastewater, usually contains some contaminants, such as acids, bases, dissolved solids, toxic compounds and coloured materials. These contaminants must be removed before the ,wastewater, can be discharged. There are many chemical, biological, and physicochemical methods have been used to ,treat, dye-containing wastewaters[1,2].

Investigations on solar degradation of acid orange 7 (C.I ...
Investigations on solar degradation of acid orange 7 (C.I ...

Catalytic activation is necessary for solar photodegradation of dyes in textile industry wastewater treat-ment, and TiO 2 could be used for this purpose. Changing the size of titanium oxide and doping it with metals like Sn(IV) can also improve its catalytic behavior. The results of this study showed that solar

Industrial wastewater treatment for fertilizer industry- A ...
Industrial wastewater treatment for fertilizer industry- A ...

wastewater, streams of this industry sector. Industrial ,wastewater, treatment usually requires one or more processes from Physical, Physico-chemical and Biological methods. The application of physical methods is quite straightforward for preliminary treatment- mainly for the removal of suspended solids or pH adjustment and will not be discussed here.

Removal of Orange 7 Dye from Wastewater Used by Natural ...
Removal of Orange 7 Dye from Wastewater Used by Natural ...

1/1/2011, · ,Acid Orange, 7 [p-(2-hydroxy-1-naphthylazo) benzene sulfonic ,acid,, as a popular water-soluble dye, is used for dyeing a variety of materials such as nylon, aluminum, de-tergents, cosmetics, wool and silk. Similar to other azo dyes, it is usually disposed in industrial ,wastewater,, which can be considered a serious health threat to humans. It is ...

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