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deep well drilling residue harmless disposal technology definition

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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deep well drilling residue harmless disposal technology definition
IS 3025 (Part 53): Method of Sampling and Test (Physical ...
IS 3025 (Part 53): Method of Sampling and Test (Physical ...

Iron, in the solution is reduced to the ferrous state by boiling with hydrochloric ,acid, and hydroxylamine, and treated with 1,10 phenanthroline at pH to 3.3. Three molecules of phenanthroline chelate each atom of ferrous ,iron, to form an orange-,red, complex. The coloured solution obeys Beer's law. Its colour intensity

An Overview of Nanomaterials for Water and Wastewater ...
An Overview of Nanomaterials for Water and Wastewater ...

In this paper, the most extensively studied ,nanomaterials,, zero-valent metal nanoparticles (Ag, Fe, and Zn), metal ,oxide, nanoparticles (TiO 2 , ZnO, and ,iron, oxides), carbon nanotubes (CNTs), and nanocomposites are discussed and highlighted in detail. Besides, future aspects of ,nanomaterials, in water and ,wastewater, treatment are discussed.

An Overview of Nanomaterials for Water and Wastewater ...
An Overview of Nanomaterials for Water and Wastewater ...

In this paper, the most extensively studied ,nanomaterials,, zero-valent metal nanoparticles (Ag, Fe, and Zn), metal ,oxide, nanoparticles (TiO 2 , ZnO, and ,iron, oxides), carbon nanotubes (CNTs), and nanocomposites are discussed and highlighted in detail. Besides, future aspects of ,nanomaterials, in water and ,wastewater, treatment are discussed.

Application of Red Mud in Wastewater Treatment
Application of Red Mud in Wastewater Treatment

Red mud, (RM) is an industrial waste produced in large amounts during alumina extraction from bauxite. Its disposal generates serious environmental pollution due to high alkalinity. Therefore, a strategy for the effective utilization of RM must be developed. For instance, RM may be transformed into useful products, such as adsorbents. Given its high concentrations of aluminum oxides, ,iron, ...

Heavy metal removal from wastewater using various ...
Heavy metal removal from wastewater using various ...

Composite of multi-walled carbon nanotubes and ,iron oxide, 20 6 – 10–60 0.1–2 – 88% Gupta et al. Manganese dioxide/,iron oxide,/,acid, oxidised multi-walled carbon nanotube nanocomposites 50–300 2 Langmuir 150 5 186.9 85% Luo et al. Carbon nanotubes functionalised using nitric ,acid, …

Iron oxide pigments - LANXESS Deutschland GmbH
Iron oxide pigments - LANXESS Deutschland GmbH

According to the Penniman-Zoph process, ,iron oxide red, pigments are prepared by dissolving ,iron, metal with addition of an ,iron oxide red, nucleus and oxidizing it. Here, as a rule nitric ,acid, is used for producing the nucleus, so that nitrate or ammonia is present in the ,wastewater, and has to be removed by means of complicated process engineering.

Recent trends and developments in Fenton processes for ...
Recent trends and developments in Fenton processes for ...

Su et al. (2011) investigated the treatment of textile ,wastewater, (86.7% COD and 96.6% color removal under optimized conditions) using the fluidized-bed Fenton process, where Fe 3+ produced in the Fenton reaction is converted to ,iron oxide, on the surface of SiO 2 …

DECOMPOSITION OF POLLUTANTS IN TEXTILE WASTEWATER …
DECOMPOSITION OF POLLUTANTS IN TEXTILE WASTEWATER …

acid,, sodium carbonate and sodium chloride. The ,wastewater, had an intensive ,red, color, its COD was 305 mg O 2 /dm3, TOC was 97 mg/dm3 and initial pH was 10.6. Experimental procedure. Analytically pure ferrous sulfate FeSO 4·7H 2 O and 30% hydrogen peroxide H 2 O 2 (Chempur, Piekary Śląskie), ,iron,(II, III) ,oxide, nanopowder <50 nm (Sigma ...

Facile and low-cost synthesis of pure hematite (α-Fe2O3 ...
Facile and low-cost synthesis of pure hematite (α-Fe2O3 ...

An alternative facile and economical synthesis route was devised to produce hematite nanoparticles from laterite rock/deposits which consists of digestion of the rock using ,acid, to leach the ,iron, into the solution as Fe 3+ ions and synthesizing the nanoparticles of ,iron oxide, by the aid of OH − groups released when the urea is decomposed, followed by calcination.

Convenient pH-responsive removal of Acid Black 1 by green ...
Convenient pH-responsive removal of Acid Black 1 by green ...

Convenient pH-responsive removal of ,Acid, Black 1 by green L-histidine/,iron oxide, magnetic nanoadsorbent from water: performance and mechanistic studies† Qurrat-ul-Ain, *a Jaweria Khatoon, b Muhammad Raza Shah, c Muhammad Imran Malik, c Iffat Abdul Tawab Khan, b Sumaira Khurshid b and Raheela Naz a This study was aimed at developing green histidine-modified Fe

A green biochar/iron oxide composite for methylene blue ...
A green biochar/iron oxide composite for methylene blue ...

15/2/2020, · However, existing synthesis techniques for producing biochar/metal ,oxide, composite usually involve soaking biochar in large volumes of modifying chemicals and/or the use of potentially toxic chemicals (Premarathna et al., 2019a), which undermines sustainability.As compared to conventional synthesis, green synthesis seeks to avoid secondary impacts, by either (i) using green materials, or (ii ...

Sulfuric acid - McGill School Of Computer Science
Sulfuric acid - McGill School Of Computer Science

Sulfuric acid, (British English: sulphuric ,acid,), H 2 S O 4, is a strong mineral ,acid,. It is soluble in water at all concentrations. It was once known as oil of vitriol, coined by the 8th-century Alchemist Jabir ibn Hayyan, the chemical's probable discoverer. ,Sulfuric acid, has many applications, and is produced in greater amounts than any other chemical besides water.

Heavy metal removal from wastewater using various ...
Heavy metal removal from wastewater using various ...

Composite of multi-walled carbon nanotubes and ,iron oxide, 20 6 – 10–60 0.1–2 – 88% Gupta et al. Manganese dioxide/,iron oxide,/,acid, oxidised multi-walled carbon nanotube nanocomposites 50–300 2 Langmuir 150 5 186.9 85% Luo et al. Carbon nanotubes functionalised using nitric ,acid, and potassium permagnate 1 9

Anodizing - Wikipedia
Anodizing - Wikipedia

Ferrous metals are commonly anodized electrolytically in nitric ,acid, or by treatment with ,red, fuming nitric ,acid, to form hard black ,Iron,(II,III) ,oxide,. This ,oxide, remains conformal even when plated on wiring and the wiring is bent. ,Anodizing, changes the microscopic texture of the surface and the crystal structure of the metal near the surface.

Iron (Fe) and water - Lenntech
Iron (Fe) and water - Lenntech

Iron, carbonate has a water solubility of 60 mg/L, ,iron, sulphide of 6 mg/L, and ,iron, vitriol even of 295 g/L. Many ,iron, chelation complexes are water soluble. Usually there is a difference between water soluble Fe 2+ compounds and generally water insoluble Fe 3+ compounds.

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