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Is the fracturing fluid flowing back frozen

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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Is the fracturing fluid flowing back frozen
Forward osmosis-extraction hybrid process for resource ...
Forward osmosis-extraction hybrid process for resource ...

15/10/2020, · The complex extraction process, which was employed for the dye recovery from the concentrated, dye wastewater, here, contains three steps : (1) R 3 N (complexing agent) is protonated in, acid, condition; (2) the protonated R 3 N and SO 4 2− react and form an ion pair; (3) anionic dye exchanges with SO 4 2−, and the R 3 NH, +-dye, complex disperses into the oil phase.

Treatment of strong acid dye wastewater by solvent extraction
Treatment of strong acid dye wastewater by solvent extraction

15/3/2005, · The acid dye intermediates, 1-diazo-2-naphthol-4-sulfonic acid was,tewater treatment by using solvent (trialkylamine N 235) extraction, and the raffinate treatment by hydrogen peroxide catalytic oxidation were studied. The extraction and stripping conditions were tested and the optimum process parameters were obtained.

Hydrochloric Acid for Wastewater Treatment | Beckart
Hydrochloric Acid for Wastewater Treatment | Beckart

Hydrochloric Acid, is a strong pH reducer. It is suitable for lowering the pH and as an emulsion breaker in industrial ,wastewater, treatment. It can be used also for scale removal.

Poultry keratin based decolorants for dyeing wastewater ...
Poultry keratin based decolorants for dyeing wastewater ...

One of the challenges in ,wastewater, treatment is the low efficiency in decoloring ,dyeing wastewater,. Chicken feather, as a waste material, has a great potential in decoloring the ,dyeing wastewater,. In this study, a lab synthesized ,dyeing wastewater, prepared with ,acid, blue-A dye

Extraction of DMAC from the pharmaceutical wastewater by a ...
Extraction of DMAC from the pharmaceutical wastewater by a ...

H. Hu, M. Yang, Treatment of strong ,acid dye wastewater, by solvent extraction, Sep. Purif. Technol., 42 (2005) 129–136. J. Saien, M. Fattahi, The impart of uni-univalent electrolytes on (water + acetic ,acid, + toluene) equilibria: representation with electroly-NRTL model, J. Chem. Thermodyn., 74 (2014) 238–246.

Air flotation process printing and dyeing wastewater ...
Air flotation process printing and dyeing wastewater ...

29/10/2012, · A, the ,wastewater, quality and emissions This enterprise printing and ,dyeing wastewater, mainly comes from ,dyeing, and finishing and a complex process. The dye: media dye, disperse dye neutral dye and cleaning agent, sodium sulphate, acetic ,acid,, sulfuric ,acid, additives, etc. ,Wastewater, quality products with different kinds of the ,dyeing, and have great changes, the…

ASSESSMENT STUDIES ON WASTEWATER POLLUTION BY …
ASSESSMENT STUDIES ON WASTEWATER POLLUTION BY …

different operations and produces one type of specific ,wastewater, 6. The ,wastewater, contains ,acid, used in desizing, ,dyeing, bases like caustic soda used in scouring and mercerization 7. It also contains inorganic chlorine compounds and oxidants, eg., hypochlorite of sodium, hydrogen peroxide and peracetic ,acid, for

Textile dyeing industry an environmental hazard
Textile dyeing industry an environmental hazard

Air ,Dyeing, Technology is a ,dyeing, process that uses air instead of water to dye garments, allowing companies to create garments with vivid designs and colors, without polluting the water and environment [9]. Air ,Dyeing, Technology “ Figure 1 ” below indicates the benefits of Air ,dyeing, technology. • Uses 95 percent less water.

Wastewater Treatment Using Imprinted Polymeric Adsorbents ...
Wastewater Treatment Using Imprinted Polymeric Adsorbents ...

23/10/2019, · Based on the application method, dyes can be divided into ,acid,, azoic, basic, direct, disperse, mordant, reactive, sulfur, and vat dyes. According to chemical compositions, dyes can ... The results indicated that the MNP-CM-CDP is a promising adsorbent in commerce for purifying ,dyeing wastewater, and can be produced on a large scale ...

EFFECT OF ACETIC ACID ON POLLUTANT DECOMPOSITION IN ...
EFFECT OF ACETIC ACID ON POLLUTANT DECOMPOSITION IN ...

Effect of ,acetic acid, on COD in ,dyeing wastewater, before and after the Fenton process. Amounts of FeSO 4⋅7H 2O – 1.6 g/dm 3, and H 2O 2 – 20 cm 3/dm3 . 34 L. KOS et al. In the case of the ,dyeing wastewater, with initial COD = 4170 mg O 2/dm 3, the dos-es of ,acetic acid, added were 0.4, 0.8, 2.1, 4.2 and 8.3 cm3/dm . Constant doses of fer-

Removal of dyes using agricultural waste as low-cost ...
Removal of dyes using agricultural waste as low-cost ...

17/7/2013, · If an organic, acid,, such as acetic, acid, can desorbs the, dye,, then the, dye, has been held by the adsorbent through chemisorption (Arivoli et al. 2009). Desorption process usually done by mixing a suitable solvent with the dye-saturated substrate and shaken together for fixed time, until the, dye extract, on the solvent and then using filtration to separate the adsorbent.

Poultry keratin based decolorants for dyeing wastewater ...
Poultry keratin based decolorants for dyeing wastewater ...

One of the challenges in ,wastewater, treatment is the low efficiency in decoloring ,dyeing wastewater,. Chicken feather, as a waste material, has a great potential in decoloring the ,dyeing wastewater,. In this study, a lab synthesized ,dyeing wastewater, prepared with ,acid, blue-A dye was treated with a chicken feather keratin-based composite decolorant KA (keratin agent) using batch decoloration ...

Toxicity Appraisal of Untreated Dyeing Industry Wastewater ...
Toxicity Appraisal of Untreated Dyeing Industry Wastewater ...

In this study, screening of the fractionated ,wastewater, through GC-MS showed the presence of phenols, phthalic ,acid, derivatives and chlorpyrifos. Metal analysis revealed that chromium, arsenic and mercury were present in amounts higher than the ,wastewater, discharge limits. Textile ,dyeing wastewater, was found to be highly mutagenic in the Ames test.

Extraction of m-β-Hydroxyethylsulfonyl Aniline from ...
Extraction of m-β-Hydroxyethylsulfonyl Aniline from ...

[1] H.S. g Hu, M.D. Yang, J. Dang, Treatment of strong ,acid dye wastewater, by solvent extraction, Separation and Purification ,Technology,. 42(2005) 129-136. DOI: 10.1016/j.seppur.2004.07.002 [2] O. Gungor, A. Yilmaz, S. Memon, M. Yilmaz, Evaluation of the performance of calyxarene derivatives as liquid phase extraction material for the removal of azo dyes, Journal of Hazardous Materials. 158(2008) 202 …

Removal of Dyes from Textile Industrial Wastewater using ...
Removal of Dyes from Textile Industrial Wastewater using ...

Table 2 Results for Sample B (,Wastewater, of ,Acid, Dye Solution) Samples Original IB IIB IIIB IVB Parameters (B) BOD (mg/l) 80 68.5 40.24 35.14 29.05 COD (mg/l) 485 398.6 275.6 280 240.58 DO (ppm) 6.9 7.52 8 6.4 9.56 Free Chlorine content 2.98 2.25 ...

Treatment of Strong Acid Dye Wastewater by Solvent Extraction
Treatment of Strong Acid Dye Wastewater by Solvent Extraction

The acid dye intermediates, 1-diazo-2-naphthol-4-sulfonic acid wastewater, treatment by using solvent (trialkylamine N235) extraction, and the raffinate treatment by hydrogen peroxide catalytic ...

Amine extraction of hydroxycarboxylic acids. 1. Extraction ...
Amine extraction of hydroxycarboxylic acids. 1. Extraction ...

Treatment of strong ,acid dye wastewater, by solvent extraction. Separation and Purification ,Technology, 2005, 42 (2) , 129-136. https://doi.org/10.1016/j.seppur.2004.07.002; Jaroslav …

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