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Treatment of oilfield fracturing flowback fluid by adding chemicals and stirring to filter

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 oilfield fracturing flowback fluid by adding chemicals and stirring to filter
Lime neutralization process for treating acidic waters ...
Lime neutralization process for treating acidic waters ...

Abstract: A lime-treatment method is disclosed to neutralize acidic waters containing heavy metals and sulphate and precipitate the metals as hydroxides along with calcium sulphate solids which are …

Treatment Technology of Wastewater from Nictric Acid ...
Treatment Technology of Wastewater from Nictric Acid ...

Generally, starch is the main source of nictric ,acid,. The production of citric ,acid, will produce a large amount of ,wastewater,. This paper mainly introduces several methods of treating nictric ,acid wastewater,, such as emulsion liquid membrane, comprehensive treatment and recycling ,neutralization wastewater, technology.

Lime (Calcium Hydroxide) for use in pH Neutralization Systems
Lime (Calcium Hydroxide) for use in pH Neutralization Systems

Lime is by far the most economically favorable alkaline reagent to use for acid neutralization. Lime is significantly cheaper than caustic (NaOH), but is much more difficult to handle. Lime forms a Two Normal solution in water in that, each mole of Ca(OH) 2 yields two moles of hydroxide - OH 2, as follows in the simple neutralization of hydrochloric acid.

Method two-stage neutralization of wastewater
Method two-stage neutralization of wastewater

The known ,method, of two-stage ,neutralization, of ,wastewater,, including averaging, ,neutralization,, sedimentation and mechanical dehydration resulting precipitate (Shabalin, A. Y. Purification and recycling of ,wastewater, at the enterprises of ferrous metallurgy, Moscow, metallurgy, 1968, S. 257-278), while the ,wastewater neutralization, share sequentially in two stages: ferrochromium slag and lime ...

Neutralization – Application Reaction and Solved Examples
Neutralization – Application Reaction and Solved Examples

‘Neutralisation’ or ,Neutralization, definition is a chemical reaction in which an ,acid, reacts with a base or alkali to form water and salt. In the reaction, the H + ions of Hydrogen in an ,acid, combine with the OH-(hydroxide) ions of the basic solution, and this is how water is formed from ,neutralization,. The neutralized solution usually has a ph seven value, but the pH value can differ ...

Neutralization Reaction - Definition Equation Examples ...
Neutralization Reaction - Definition Equation Examples ...

Application of ,Neutralization Reaction, 1. Titration methods: The ,method, of chemical titration is employed to find unknown concentrations of acids or bases by finding their ,neutralization, point. To find the point where the ,neutralization, happens, we use a pH indicator or pH meter.

KR100847444B1 - Method for neutralizing sulphuric acid ...
KR100847444B1 - Method for neutralizing sulphuric acid ...

First, the, light calcined dolomite, according to the present invention is an alkaline substance such as, slaked lime, used for neutralization in sulfuric acid wastewater treatment, and it has an...

Lime neutralization process for treating acidic waters ...
Lime neutralization process for treating acidic waters ...

This invention is intended as a method for treating acidic wastewaters containing heavy metals and sulphate, such as acid mine drainages (AMD), where a, lime slurry (,CaO,) containing a specified amount of recycled sludge, is added to the water as a neutralizing reagent.

Alternative Disinfection Methods Fact Sheet: Peracetic Acid
Alternative Disinfection Methods Fact Sheet: Peracetic Acid

Residual PAA in the ,wastewater, at discharge was less than 1 ppm thereby eliminating the need of a ,neutralization, step. No measurable effect was observed by Frankfort laboratory personnel on pH and BOD by the use of PAA for disinfection. COSTS . Peracetic ,acid, is applied to the ,wastewater, process

Neutralization of Wastewater in the Chemical Industry ...
Neutralization of Wastewater in the Chemical Industry ...

As such, neutralization of the acidic mine water takes place using, Calcium Oxide,, commonly referred to as lime and, Calcium Hydroxide, (Hydrated lime). The chemical formulas for lime and hydrated lime are CaO and Ca (OH) 2 respectively.

SOLUTION FOR WASTEWATER PROBLEM RELATED TO …
SOLUTION FOR WASTEWATER PROBLEM RELATED TO …

Treatment with sulphuric ,acid, Another ,method, is the treatment of ,wastewater, with the addition of sulphuric ,acid, and simultaneous aeration. The disadvantages lie in the evolution of hydrogen cyanide, which is highly toxic in nature. Copper plating solution containing 15,200-ppm cyanide as NaCN can be treated with sulphuric ,acid

Physicochemical wastewater treatment techniques - TASK
Physicochemical wastewater treatment techniques - TASK

Neutralisation : too ,acid, or too alkaline ,wastewater, flows are neutralized until a pH value of approx 7 is reached. The main reason to neutralize ,wastewater, is to prepare it for further treatment in a biological ,wastewater, treatment station or to meet the standards for discharge (eg. too ,acid wastewater, can damage the sewer system and ,wastewater, treatment plants).

Flow Equalization and Neutralization | SpringerLink
Flow Equalization and Neutralization | SpringerLink

Abstract. Flow equalization and chemical ,neutralization, and are two important components of water and ,wastewater, treatment. Chemical ,neutralization, is employed to balance the excess acidity or alkalinity in water, whereas flow equalization is a process of controlling flow velocity and flow composition.

Neutralization of Wastewater - avs.globecore.com
Neutralization of Wastewater - avs.globecore.com

6/1/2017, · This method is used more often when working with, acidic wastewater., While selecting, neutralization, chemical, consider the specific, acid,, its concentration and solubility of salts formed in the reaction. Filtration through, neutralizing, materials (magnesite, dolomite,, lime,, marble, chalk etc) is performed in special, neutralization, filters.

PHYSICAL AND CHEMICAL WASTEWATER TREATMENT METHODS
PHYSICAL AND CHEMICAL WASTEWATER TREATMENT METHODS

The purpose of ,neutralization, is to adjust the pH value to meet the requirements of the different processing units in the ,wastewater, treatment system. ,Neutralization, may be used in order to treat ,acid, wastewaters containing metals, the ,method, comprising increasing the pH of the ,acid, waste by addition of an alkaline reagent, to form a precipitate and collecting the precipitate.

CAMIX | Neutralization Water Wastewater Treatment Plants ...
CAMIX | Neutralization Water Wastewater Treatment Plants ...

The purpose of ,neutralization, is to adjust the pH value to meet the requirements of the different processing units in the ,wastewater, treatment system. ,Neutralization, may be used in order to treat ,acid, wastewaters containing metals, the ,method, comprising increasing the pH of the ,acid, waste by addition of an alkaline reagent, to form a precipitate and collecting the precipitate.

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