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acid fracturing waste water up-to-standard emission treatment methods used

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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acid fracturing waste water up-to-standard emission treatment methods used
Implementation of different physicochemical techniques for ...
Implementation of different physicochemical techniques for ...

Melt Layer Crystallization • The crystallized solid is recovered on the cooled surface due to the imposed supercooling (ΔT=Tmelt-Tcold) which is the driving force for the crystallization of phenolic compounds. • During this process, it is possible to separate the various components according to their freezing points.

Crystallization process and nucleation kinetics of Mg2 ...
Crystallization process and nucleation kinetics of Mg2 ...

In order to achieve efficient recovery of ions from the simultaneous desulfurization and denitrification ,wastewater,, the effects of various factors (i.e. the saturation temperature, the ,cooling, termination temperature, the stirring rate and the ,cooling, rate) on ,crystallization, yield, metastable zone width and crystal morphology were investigated to determine the optimal ,crystallization, conditions of Mg 2+ …

Removal and recovery of phenolic compounds from olive mill ...
Removal and recovery of phenolic compounds from olive mill ...

1/9/2014, · In the present work,, trans-cinnamic acid, and, feru,lic acid, model compounds for the PP present in OMW were removed by cooling crystallization from aqueous solutions. Cooling crystallization experiments were done in a batch reactor kept at constant temperature, T hot (70 °C).

GEA crystallization technologies
GEA crystallization technologies

Melt crystallization systems remove heat and cool the liquid to create a driving force for the formation and growth 0f crystals. Melt crystallization provides an economic and energy-efficient alternative purification step in cases where standard distillation is unsuitable due to close boiling isomers, azeotropic systems,

Crystallizer- Principal Types & Technology | ALAQUA
Crystallizer- Principal Types & Technology | ALAQUA

A typical brine concentrator can recover 95 to 99% of wastewater for reuse. Crystallizers are suitable for recovering salts from wastewater that can then be used or sold. In this way, a crystallizer maximizes waste stream usage and helps plants meet zero liquid discharge (ZLD) requirements.

Treatment of Organic Wastewater Containing High ...
Treatment of Organic Wastewater Containing High ...

Cooling crystallization was first employed to remove sulfate from the wastewater. At 4.0°C, sulfate concentration was reduced from 212 to 96.0 g / L, and total wastewater volume decreased by 49.1% through two-stage cooling crystallization.

Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...
Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...

Furthermore, over 80% of the, o,xalic acid was recovered via crystallization by cooling the oxalate containing HCl solution to 5 °C. After, oxalic, acid crystallization, the residual raffinate acid solution can then be recirculated back to the ferrous oxalate leaching stage, to decrease any, oxalic, acid losses.

Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...
Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...

Furthermore, over 80% of the oxalic acid was recovered via crystallization by cooling the oxalate containing HCl solution to 5 °C. After oxalic acid crystallization, the residual raffinate acid solution can then be recirculated back to the ferrous oxalate leaching stage, to decrease any oxalic acid losses.

Treatment of Organic Wastewater Containing High ...
Treatment of Organic Wastewater Containing High ...

Cooling crystallization was first employed to remove, sulfate, from the wastewater. At 4.0°C, sulfate concentration was reduced from 212 to 96.0 g / L, and total wastewater volume decreased by 49.1% through two-stage cooling crystallization.

Recovery of Terephthalic Acid from Alkali Reduction ...
Recovery of Terephthalic Acid from Alkali Reduction ...

TA, was first precipitated from alkali reduction wastewater by acidification with sulfuric acid, and then the produced crude, TA, was dissolved in dimethylacetamide (DMA) so that crude, TA, could be...

Power and Cogeneration Water and Wastewater Treatment ...
Power and Cogeneration Water and Wastewater Treatment ...

Acid, is added to the softened water to stop the softening reaction. The pH is lowered to less than 8. Usually hydrochloric ,acid, is used because it doesn’t add sulfates that could form gypsum scale in the reverse osmosis and ,crystallization, processes. Filtration. Three stages of filtration are used; each provides pretreatment to the next.

Wastewater Treatment for the Chemical Processing Industry
Wastewater Treatment for the Chemical Processing Industry

In addition to water & ,wastewater, treatment, Veolia also provides technologies for in-process and the production of specialty chemicals. Evaporation & ,Crystallization, Veolia's HPD® Evaporation and ,Crystallization, systems concentrate dilute process streams to extract high-purity crystalline chemicals while recovering clean water and other valuable by-products from waste brine.

PHOSPHATE RECOVERY BY STUVITE PRECIPITATION IN A …
PHOSPHATE RECOVERY BY STUVITE PRECIPITATION IN A …

In classical ,crystallization,, crystals can be obtained from a solution ,by cooling,, by increasing the concentration of the solute through the solvent evaporation, or by combining these two processes when solvent evaporation is used both for ,cooling, and for concentrating.

Crystallizer- Principal Types & Technology | ALAQUA
Crystallizer- Principal Types & Technology | ALAQUA

A continuous cooling crystallizer (CCC) is used to crystallize other types of salts. Crystallizers can either stand alone or be combined with other technologies, such as evaporators. Steam-driven evaporators remove water from a solution.

Removal and recovery of phenolic compounds from olive mill ...
Removal and recovery of phenolic compounds from olive mill ...

In the present work,, trans-cinnamic acid, and ferulic acid, model compounds for the PP present in OMW were removed by cooling crystallization from aqueous solutions.

How Do You Know If You Need a Cooling Tower Water ...
How Do You Know If You Need a Cooling Tower Water ...

Controlling ,acid, feed, softening, and pH/alkalinity is critical and should be closely monitored. Failure to ,do, so can lead to rapid scale formation and/or corrosion to equipment. ,High, amount of hardness or total dissolved solids. ,High, hardness and total dissolved solids (TDS), especially in the form of calcium carbonate, can also lead to heavy ...

Purification of Acetic Acid Wastewater using Layer Melt ...
Purification of Acetic Acid Wastewater using Layer Melt ...

7/4/2008, · In this study, the purification of pure water from wastewater containing acetic acid was conducted by using layer melt crystallization. Ice crystalline layer was formed at various cooling temperatures, impurity contents, and cooling rates of an acetic acid mixture. The ice layer was purified by the sweating process.

Reactive crystallization: a review - Reaction Chemistry ...
Reactive crystallization: a review - Reaction Chemistry ...

A representative example for how PAT can assist in modelling, monitoring, and optimal control during the development of a large-scale process is the reactive ,crystallization, of glutamic ,acid, from monosodium glutamate and sulfuric ,acid,. 298 A common control strategy in batch antisolvent or ,cooling, crystallizations is to determine the optimal supersaturation trajectory for the process as a ...

Purification of Acetic Acid Wastewater using Layer Melt ...
Purification of Acetic Acid Wastewater using Layer Melt ...

7/4/2008, · In this study, the purification of pure water from ,wastewater, containing acetic ,acid, was conducted by using layer melt ,crystallization,. Ice crystalline layer was formed at various ,cooling, temperatures, impurity contents, and ,cooling, rates of an acetic ,acid, mixture. The ice layer was purified by the sweating process.

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