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Treatment of acid wastewater containing sulfuric acid with ammonia water

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 containing sulfuric acid with ammonia water
POINT SOURCES OF POLLUTION: LOCAL EFFECTS AND IT’S …
POINT SOURCES OF POLLUTION: LOCAL EFFECTS AND IT’S …

Wastewater, tubes do not end up any more at dead bottoms, trees and vegetation surrounding factories are alive and ,green,, and the surrounding air has cleared up substantially. The efforts in many OECD countries to reduce pollution started in the 1980s, ,after, the need for such efforts became apparent. The discharges of early-

Recent advances and prospects of catalytic advanced ...
Recent advances and prospects of catalytic advanced ...

At very ,acidic, condition (pH 2–3), the acidification of the solution using HCl generates much HClO·-from the reaction between Cl-and ·OH. As a result, the degradation efficiency is decreased due to the lower reactivity of HClO· - compared to ·OH (Nezamzadeh-Ejhieh and Khorsandi 2010a,b, Pourtaheri and Nezamzadeh-Ejhieh 2015).

Sources and Treatment of Wastewater in the Nonferrous ...
Sources and Treatment of Wastewater in the Nonferrous ...

An example of a flow diagram for a continuous flow sulfide precipitation system is shown in Figure 6. In the first step the pH of the ,acidic wastewater, is adjusted to an optimum operating pH by the addition of an alkali. The optimum pH is deter- mined by laboratory jar tests and/or pilot tests on the ,wastewater being, …

Frontiers | Enhanced Degradation of Rh 6G by Zero Valent ...
Frontiers | Enhanced Degradation of Rh 6G by Zero Valent ...

As time went by, the color of both materials become lighter gradually due to the oxidation of nZVI. However, nZVI/clay showed a better resistance to oxidation than nZVI as the color of nZVI suspension changed from black to yellow completely ,after, 72 h while the color of nZVI/clay suspension just started to turn yellow ,after, the same time.

Statistical modeling and optimization of heterogeneous ...
Statistical modeling and optimization of heterogeneous ...

30/9/2020, · Detoxification of ,wastewater, is a great challenge due to the presence of toxic, complex and diverse organic pollutants that resistant to conventional treatment systems consists of an either-or ...

Sulfuric acid - Wikipedia
Sulfuric acid - Wikipedia

Sulfuric acid (American spelling) or sulphuric acid (Commonwealth spelling), also known as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H 2 SO 4.It is a colorless, odorless and viscous liquid that is miscible with water at all concentrations.

Recent Applications of Electrocoagulation in Treatment of ...
Recent Applications of Electrocoagulation in Treatment of ...

The initial ,green, color of the ,wastewater, disappeared ,after, EC treatment and the effluent became more transparent. A very low OC value was achieved alongside high removal efficiency. Note that in Table 3 , C 10 - C 50 stands for C 10 -C 50 -hydrocarbons (indicators of raw oil-based hydrocarbons) [63].

Green Processing and Synthesis - De Gruyter
Green Processing and Synthesis - De Gruyter

2.2 Experimental methods. Firstly, the raw material was heated via conventional ,coking, furnace at the temperature of 500 ° C for 2 h under inert gas to obtain the char. 8 g char and 32 g KOH were mixed with the mass ratio of 1:4.

Frontiers | Enhanced Degradation of Rh 6G by Zero Valent ...
Frontiers | Enhanced Degradation of Rh 6G by Zero Valent ...

As time went by, the color of both materials become lighter gradually due to the oxidation of nZVI. However, nZVI/clay showed a better resistance to oxidation than nZVI as the color of nZVI suspension changed from black to yellow completely ,after, 72 h while the color of nZVI/clay suspension just started to turn yellow ,after, the same time.

Waste Characterization Workshop - Michigan
Waste Characterization Workshop - Michigan

o ,Coking, • K005 - ,Wastewater, treatment sludge from the production of chrome ,green, ... • Wastes that are highly ,acidic, or highly basic • Wastes that can readily corrode or dissolve ... • EPA identified 40 toxic compounds and elements known to have leached into the groundwater ,after being, disposed of in landfills • Eight elemental ...

Upgrading of lignin-derived bio-oils by catalytic ...
Upgrading of lignin-derived bio-oils by catalytic ...

The ,acidic, character of a transition alumina influences the performance of the catalyst, ,being, active for reactions such as transalkylation. Data characterizing the conversion of guaiacol are illustrative. 68,92 A major disadvantage of the ,acidic, support is the high yields of coke that are associated with the ,acidic, …

ACARP Abstract
ACARP Abstract

However the performance of greenwaste only was poorer with a pH of >4 reached ,after, 210 days, while the other treatments produced circum-neutral pH (~7) ,after, 120 days with the exception ,being, low levels of sewage only which produced a pH of ~6 ,after, 210 days.

Waste Characterization Workshop - Michigan
Waste Characterization Workshop - Michigan

o ,Coking, • K005 - ,Wastewater, treatment sludge from the production of chrome ,green, ... • Wastes that are highly ,acidic, or highly basic • Wastes that can readily corrode or dissolve ... • EPA identified 40 toxic compounds and elements known to have leached into the groundwater ,after being, disposed of in landfills • Eight elemental ...

Energy-Efficient Green Catalysis: Supported Gold ...
Energy-Efficient Green Catalysis: Supported Gold ...

Next, 4 mL of 0.03 M lysine was added with vigorous stirring. To this suspension, 4 mL of 0.35 M NaBH 4 solution was added dropwise over 10 min. The mixture was left to stand for 24 h and then filtered, and the residue was washed with water and ethanol and dried at 80 …

Recent Applications of Electrocoagulation in Treatment of ...
Recent Applications of Electrocoagulation in Treatment of ...

The initial ,green, color of the ,wastewater, disappeared ,after, EC treatment and the effluent became more transparent. A very low OC value was achieved alongside high removal efficiency. Note that in Table 3 , C 10 - C 50 stands for C 10 -C 50 -hydrocarbons (indicators of raw oil-based hydrocarbons) [63].

ACARP Abstract
ACARP Abstract

However the performance of greenwaste only was poorer with a pH of >4 reached ,after, 210 days, while the other treatments produced circum-neutral pH (~7) ,after, 120 days with the exception ,being, low levels of sewage only which produced a pH of ~6 ,after, 210 days.

Recycling of Waste Sludge: Preparation and Application of ...
Recycling of Waste Sludge: Preparation and Application of ...

After, modification with NaOH , the shape of SBAC is mesoporous and macroporous, showing a stronger adsorption capacity for CO 2 than that of commercial Ac. HCl: 269: ,After, the ,sludge, was acid washed with HCl (5 M), slight pore development was observed and the BET surface area is 269 m 2 ·g −1 when activated under CO 2 at 800°C. H 3 PO 3 <5

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