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Fracturing flowback fluid treatment process

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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Fracturing flowback fluid treatment process
Wastewater Treatment MSC | Alkalinity | Sewage Treatment
Wastewater Treatment MSC | Alkalinity | Sewage Treatment

organic matter chemically by using a strong oxidizing agent (,K2Cr2O7,) ,in an acidic, medium (H2SO4). COD > BOD because materials like fats and lignin are also oxidized with the help of chemicals, which are otherwise biodegrade slowly. No clear co-relation exist between BOD and COD Co-relation is possible at a particular treatment plant. Advantages :

Environmental Pollution Depletion of Chromium from Water ...
Environmental Pollution Depletion of Chromium from Water ...

tanning, textile dyeing, paint, ink, and aluminium manufacturing industries. These ,industrial, effluents can contain Cr (VI), in the concentration range of 10 to 100 mg/L, which is much higher than the standard limit; 0.5 mg/L in ,industrial wastewater, (EPA). In aqueous systems, chromium usually exists in both trivalent [Cr

What happens when SO2 gas is passed through an acidified ...
What happens when SO2 gas is passed through an acidified ...

To be an oxidation ,there, must be a reduction. We look what happen to ,K2Cr2O7,(potassium dichromate) We can use (Cr2O4)²- as ,K2Cr2O7,. This is the half reaction (Cr2O4)²- + 8H+ 6e 2Cr³+ + 4(H20) It is a oxidation reaction. It means the S in SO2 becomes reduced. This is the half reaction. SO2 + 2(H20) (SO4)²- + 4H+ 2e. Here SO2 becomes (SO4)²-

Chromium sulfate | Cr2(SO4)3 - PubChem
Chromium sulfate | Cr2(SO4)3 - PubChem

Cr2(SO4)3 or ,K2Cr2O7, content exceeds 0.1 Cr/P, the sugar-phosphate backbone of the double helix becomes irregular and nucleic bases unstacked, i.e. denaturation of DNA occurs. A very small amount of the salt, less than 0.01 Cr/P contained in DNA films prevents the conformational transition of the double helix from the B to A form induced by r.h. decreasing.

Wastewater Treatment MSC | Alkalinity | Sewage Treatment
Wastewater Treatment MSC | Alkalinity | Sewage Treatment

organic matter chemically by using a strong oxidizing agent (,K2Cr2O7,) ,in an acidic, medium (H2SO4). COD > BOD because materials like fats and lignin are also oxidized with the help of chemicals, which are otherwise biodegrade slowly. No clear co-relation exist between BOD and COD Co-relation is possible at a particular treatment plant. Advantages :

Methods for Chemical Analysis of Water and Wastes
Methods for Chemical Analysis of Water and Wastes

----- TABLE 1 (CONT) Vol Req Holding Measurement (ml) Container2 Preservative3'4 Time5 MBAS 250 P,G Cool, 4°C 48 Hrs NTA 50 P,G Cool, 4°C 24 Hrs 1 More specific instructions for preservation and sampling are found with each procedure as detailed in this manual A general discussion on sampling water and ,industrial wastewater, may be found in ASTM, Part 31, p 72-82 (1976) Method D-3370 2 ...

Comparative Study of Oxidants in Removal of Chemical ...
Comparative Study of Oxidants in Removal of Chemical ...

agent under acidic condition. During the determination of COD organic matter is converted to CO 2 and H 2 O regard less of the biological assimilability of substance. Generally K 2 Cr 2 O 7 is used for the estimation of oxidizing agent consumed in stabilizing the waste. K 2 Cr 2 O 7 has been the

Understand Water Parameters BOD COD TSS etc. in a ...
Understand Water Parameters BOD COD TSS etc. in a ...

K2Cr2O7, can oxidize both BIODEGRADABLE and BIOREFRACTORY organic pollutant, it even can oxidize reductive inorganic pollutant. So, COD value is always > BOD. If BOD/COD >=0.3, we can say that the ,wastewater, is with good biodegradability, you can …

Methods for Chemical Analysis of Water and Wastes
Methods for Chemical Analysis of Water and Wastes

----- COLOR Method 110.3 (Spectrophotometric) STORET NO. 00080 Scope and Application 1 1 This method is applicable to drinking, surface, and saline waters, domestic and ,industrial, wastes It must be used for ,industrial, wastes that cannot be determined by the Platinum- Cobalt method Summary of Method 2 1 Color characteristics are measured at pH 7 6 and at the original pH by …

Water Quality Control & Treatment - SlideShare
Water Quality Control & Treatment - SlideShare

• The sample is oxidized by a boiling mixture of ,K2Cr2O7, and sulfuric acid using an excess of ,K2Cr2O7,. • After digestion, the remaining unreduced ,K2Cr2O7, is measured to determine the amount consumed by titrating with ferrous ammonia sulfate (FAS) until the end point is indicated by a sharp color change.

Characteristics of Agricultural and Food Wastewater ...
Characteristics of Agricultural and Food Wastewater ...

Chemical oxygen demand, (COD) is an estimator of the total organic matter content of wastewaters. COD approach is based on the chemical oxidation of the organic matters in the wastewater: either oxidation of the organic matters by permanganate or oxidation by potassium dichromate (K2Cr2O7).

Chromium sulfate | Cr2(SO4)3 - PubChem
Chromium sulfate | Cr2(SO4)3 - PubChem

Cr2(SO4)3 or ,K2Cr2O7, content exceeds 0.1 Cr/P, the sugar-phosphate backbone of the double helix becomes irregular and nucleic bases unstacked, i.e. denaturation of DNA occurs. A very small amount of the salt, less than 0.01 Cr/P contained in DNA films prevents the conformational transition of the double helix from the B to A form induced by r.h. decreasing.

Polymer-Based Membranes for Oily Wastewater Remediation
Polymer-Based Membranes for Oily Wastewater Remediation

Chemical oxygen demand (COD) was based on the oxidation of organic materials by an excess of potassium dichromate (K2Cr2O7), in acidic medium and boiling, in the presence of silver sulfate and mercury sulfate. COD was measured by a spectrophotometer of the type (DR 1900 LANGE HACH, Duesseldorf, Germany).

Water Quality Control & Treatment - SlideShare
Water Quality Control & Treatment - SlideShare

• The sample is oxidized by a boiling mixture of ,K2Cr2O7, and sulfuric acid using an excess of ,K2Cr2O7,. • After digestion, the remaining unreduced ,K2Cr2O7, is measured to determine the amount consumed by titrating with ferrous ammonia sulfate (FAS) until the end point is indicated by a sharp color change.

Studies on development of microbial fuel cell for waste ...
Studies on development of microbial fuel cell for waste ...

20/2/2021, · Standardize with N/40 ,K2Cr2O7,. 2.1.1.5. Starch solution. Add 2 g of starch powder in one hundred ml of distilled water and dissolve it through heating. 2.1.1.6. Standard 0.25 N sodium dichromate (,K 2 Cr 2 O 7,) solution. Dissolve 12.259gms of natural ,K2Cr2O7, in distilled water and dilute to one litre. Add approximately 120gms of sulphuric acid.

Methods For Chemical Analysis Of Water And Wastes
Methods For Chemical Analysis Of Water And Wastes

4.2 ,There, is no acceptable procedure for determining the accuracy of the BOD test. 11 ... This solution must be standardized daily against ,K2Cr2O7, solution. ... 2.2.1 Preliminary treatment of ,wastewater, and/or ,industrial, effluents is usually necessary because of the complexity and variability of the sample matrix.

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