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Filtration of fracturing flowback fluid

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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Filtration of fracturing flowback fluid
Leaching behaviour of impurities in waste gypsum board
Leaching behaviour of impurities in waste gypsum board

materials. ,Waste gypsum, board must be clean from contaminants for recycling. Contaminants such as wood, plastic, metal, and asphalt in ,waste gypsum, board must be removed. However, ,waste gypsum, board contains some chemical impurities in it. When the ,waste gypsum, board is applied to roadbed materials, the impurities can leach into ground ,water,.

MORINGA OLEIFERA SEEDS AS AN ENVIRONMENTAL FRIENDLY ...
MORINGA OLEIFERA SEEDS AS AN ENVIRONMENTAL FRIENDLY ...

Another new technology is the zero waste ,evaporation, technology. By evaporating the POME, water ,can, be recovered while the residual solid content ,can, be utilized as fertilizer. Although this method reclaims 80% of water recovery from POME, a major drawback is the high energy requirement [4].

Gypsum - Nature's Way Resources
Gypsum - Nature's Way Resources

GYPSUM (CaSO4) Gypsum is a naturally occurring mineral that is ,made, up of calcium sulfate and ,water, (CaSO4+2H2O) that is sometimes called hydrous calcium sulfate. It is the mineral calcium sulfate with two ,water, molecules attached. By weight it is 79% calcium sulfate and 21% ,water,.

Biotechnology for Gas-to-Liquid (GTL) Wastewater Treatment ...
Biotechnology for Gas-to-Liquid (GTL) Wastewater Treatment ...

The presence of long-chain alcohols in ,wastewater, was proof of an inhibition ,effect, on the microbial activity and, therefore, a proper adaptation process must ,be carried out, . It is worth mentioning here that the target compounds in the GTL ,wastewater, treatment are short chain alcohols, since 76% of the COD concentration is due to the presence of short-chain alcohol.

Cooling tower water systems part 2 | Water Tech Online
Cooling tower water systems part 2 | Water Tech Online

In the November/December 2017 issue of Water Technology, part 1 of this two-part series, “How To Increase Cooling Tower Efficiency,” discussed water source impurities affecting circulating water systems, as well as cooling tower water treatment methods, the importance of the scaling indices in cooling tower applications and biological treatment methods.

Gypsum - Nature's Way Resources
Gypsum - Nature's Way Resources

Gypsum is a naturally occurring mineral that is made up of calcium sulfate and water (CaSO4+2H2O) that is sometimes called hydrous calcium sulfate. By weight it is 79% calcium sulfate and 21% water. Gypsum naturally occurs in sedimentary deposits from ancient sea beds.

Wastewater Engineering - Dokuz Eylül University
Wastewater Engineering - Dokuz Eylül University

The accumulated H 2 S ,can, then be oxidized biologically to sulfuric ,acid,, which is corrosive to sewer pipes. The H 2 S gas, which is evolved and mixed with the ,wastewater, gas (CH 4 + CO 2 ), is corrosive to the gas piping, and, if burned in gas engines, the products of combustion ,can, damage the engine and severely corrode exhaust – gas heat recovery.

Recovery of Volatile Fatty Acids from Fermented Wastewater ...
Recovery of Volatile Fatty Acids from Fermented Wastewater ...

Separation of volatile fatty acids (VFAs) from fermented ,wastewater, is challenging, due to low VFA concentrations in mineral-rich streams. As a result, separation capacity and selectivity with traditional solvents and adsorbents are both compromised. In this study, using a complex artificial model solution mimicking real fermented wastewaters, it is shown that a simple and robust adsorption ...

Gypsum as coagulant for waste water treatment
Gypsum as coagulant for waste water treatment

We are using ,gypsum, as a coagulant on clay materials. Lime also responds well but increased the alkalinity from a ph of 8.0 to 10.5. ,Gypsum, on the other hand lowered the pH from 8.0 to 6.7 and flocculant was added. We use it in our thickeners with great success. Wallie du Toit process engineering - Klerksdorp,Northwest, South Africa

Fate and transport of radioactive gypsum stack water ...
Fate and transport of radioactive gypsum stack water ...

30/7/2018, · The gypsum in phosphogypsum stacks is created as a by-product after phosphorous acid is obtained from phosphate rock and processed in industrial facilities, …

Treatment and Disposal of Gypsum Board Waste
Treatment and Disposal of Gypsum Board Waste

dissolved in ,water,. Any soluble sul-fate will work--including all by-prod-uct ,gypsum,--in addition to natural ,gypsum, and anhydrite. Many natural waters contain high levels of dissolved sulfates, including seawater, brine and “hard” ,water,. Many industrial ,waste, streams from processes which use sulfuric ,acid, also contain soluble sul-fates. 4.

Three overviews on Environment and Aquaculture in the ...
Three overviews on Environment and Aquaculture in the ...

Studies have been ,carried out, to describe their physiological ,effect, on the target organism, and the result suggests that the hormones are completely eliminated from the animal's body after several weeks. No studies of their wider ecological impact on the environment have been ,carried out, …

Groups seek to have Biden EPA declare gypsum acid water ...
Groups seek to have Biden EPA declare gypsum acid water ...

22/2/2021, · In 1991, after a review, the EPA found that phosphogypsum and acidic process water were not, hazardous waste., The finding allowed them to be treated as …

US5298169A - Treatment of waste sulfuric acid by gypsum ...
US5298169A - Treatment of waste sulfuric acid by gypsum ...

The waste acid is treated in a first step with a calcium-containing material to produce a gypsum suspension which is filtered and from which a filtrate is recovered. The filtrate is treated in a...

Treatment of gas well production wastewaters - ProChemTech ...
Treatment of gas well production wastewaters - ProChemTech ...

A control point for the multi-,effect, evaporator ,can, be to obtain a 40% by weight concentration ... within the dashed lines ,can, be supplied separately or ,can, be pre-existing at a site where the method is to ,be carried out,. EXAMPLE Example 1. The ,wastewater, treatment system and process described with ... by ,evaporation,, all ,three, salts ,can, be ...

Acid water atop slumping Uncle Sam gypsum pile threatens ...
Acid water atop slumping Uncle Sam gypsum pile threatens ...

29/1/2019, · The, white gypsum mountain, is made up of, waste, left over from the fertilizer manufacturing process. Phosphate rock mined in Florida and elsewhere is shipped to the Uncle Sam plant, where it is...

Treatment and Disposal of Gypsum Board Waste
Treatment and Disposal of Gypsum Board Waste

dissolved in ,water,. Any soluble sul-fate will work--including all by-prod-uct gypsum--in addition to natural gypsum and anhydrite. Many natural waters contain high levels of dissolved sulfates, including seawater, brine and “hard” ,water,. Many industrial ,waste, streams from processes which use sulfuric ,acid, also contain soluble sul-fates. 4.

Industrial Wastewater Treatment | Beatona
Industrial Wastewater Treatment | Beatona

•Al-Rawabi dairy facilities have used phosphoric ,acid, for scale removal. •40-50 % of the phosphorus discharged to the ,wastewater, treatment plant was contributed by the phosphoric ,acid,. •Perform a phosphorus minimization evaluation within the processing plant. Substituted nitric ,acid, or a phosphoric/nitric blend for straight phosphoric ,acid,.

Acid water atop slumping Uncle Sam gypsum pile threatens ...
Acid water atop slumping Uncle Sam gypsum pile threatens ...

29/1/2019, · The white gypsum mountain is made up of waste left over from the fertilizer manufacturing process. Phosphate rock mined in Florida and elsewhere is shipped to the Uncle Sam plant, where it is...

Emission reduction process for dechlorinating flue‐gas ...
Emission reduction process for dechlorinating flue‐gas ...

The CaCO 3 generated in Equation ,can, be reused in the flue‐gas desulfurization process, while (NH 4) 2 SO 4 ,can, be reused as fertilizer; this reaction ,can be carried out, in the field. Therefore, utilizing the dechlorinated FGD gypsum and ,wastewater evaporation, products using this technique ,can, provide sustainable waste management for power plants.

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