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oil producing wastewater reinjection technology ltd commodities

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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oil producing wastewater reinjection technology ltd commodities
Ammonium bisulfite | NH4HSO3 - PubChem
Ammonium bisulfite | NH4HSO3 - PubChem

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: SMALL FIRE: Dry ,chemical,, CO2 or water spray. LARGE FIRE: Dry ,chemical,, CO2, alcohol-resistant foam or water spray. Move containers from fire area if you can do it without risk. Dike fire-control water for later disposal; do not scatter the material.

CHEMICALS | BTA Trading
CHEMICALS | BTA Trading

Sodium sulfide, is primarily used in the Kraft process in the pulp and paper industry. It is used in water treatment as an oxygen scavenger agent and also as a metals precipitant; in chemical photography for toning black and white photographs; in the textile industry as a bleaching agent, for desulfurising and as a dechlorinating agent; and in the leather trade for the sulfitisation of tanning ...

(PDF) POLLUTANTS IN WASTEWATER EFFLUENTS: IMPACTS …
(PDF) POLLUTANTS IN WASTEWATER EFFLUENTS: IMPACTS …

materials of ,chemical industry,, when in contact with receiving water bodies could result in serious pr oblems, such as threat to fishery, marine habitats of wildlife,

[PDF] Application of sodium- and biogenic sulfide to the ...
[PDF] Application of sodium- and biogenic sulfide to the ...

The ,recovery, of nickel ,sulfide, was improved when the initial pH of the ,solution containing, each metal was set to 7. In such a condition the removal efficiency of nickel was 99.9%, corresponding to a residual level of 0.13 mg L −1 for nickel in ,solution,.

The Hard Truth About Salt-Free Water Softeners
The Hard Truth About Salt-Free Water Softeners

Chuck Wright, who is a chemistry professor at the University of Utah, wrote this in the Scientific American, almost 20 years ago, but the science is still the same: “ A typical water-softening system removes calcium and magnesium ions from hard water and replaces them with sodium ions. Calcium and magnesium ions interfere with the action of household soaps and detergents, but sodium ,does, not.

Ammonium recovery from process water of digested sludge ...
Ammonium recovery from process water of digested sludge ...

First bench-scale investigations have been conducted using synthetic process water based on a ,sodium, bicarbonate/carbonate buffer ,solution, (c = 0.01 mole/l) and ,containing, ammonium chloride (c = 1,150 mg/l NH 4-N). The temperature and pH values were T = 21.1 ± 0.3 °C and pH = 9.2 ± 0.05.

Printing - Standard Methods for the Examination of Water ...
Printing - Standard Methods for the Examination of Water ...

required if the stock phenol ,solution, contains 1000 mg phenol/L. 2) Prepare a blank in exactly the same manner, using distilled water and 10.0 mL bromate-bromide ,solution,. Titrate blank and sample with 0.025M ,sodium, thiosulfate, using starch ,solution, indicator. 3) Calculate the concentration of phenol ,solution, as follows:

HJ 2057-2018 PDF.
HJ 2057-2018 PDF.

HJ 2057-2018: Technical specification for ,wastewater, treatment of lead smelting. HJ2057-2018 (HJ/T 2057-2018). Industry: Environmental Protection Industry Standard. Classificat...

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

Presently, comprehensive reviews are already available that have focused on applying Fenton processes in ,wastewater, treatment, with various target compounds and process combinations (Ashrafi et al., 2015; Dewil et al., 2017; Kamali and Khodaparast, 2015; Miklos et al., 2018; Wang et al., 2016).However, in the last decade, several improvements have been made to Fenton processes as the research ...

Physicochemical and environmental properties of arsenic ...
Physicochemical and environmental properties of arsenic ...

containing acid wastewater, [4,5]. In particular, copper or lead−zinc smelting processing produces a large amount of acidic ,wastewater containing, arsenic and metallic elements [6]. Various treatment processes such as precipitation, adsorption, and biological methods were employed for the removal of arsenic from water [7−9]. To realize the

Lignin recovery from spent alkaline pulping liquors using ...
Lignin recovery from spent alkaline pulping liquors using ...

When the word “,recovery,” is used in the context of the pulping industry, the main focus has been on restoring the starting composition of the mixture of ,sodium, hydroxide and ,sodium sulfide,, which are used in the kraft process to break down and dissolve the lignin component of the wood or other cellulosic source material (Rydholm 1965; Marton 1971; Grace et al. 1989; Biermann 1996; Fardim ...

Harnessing Peptide Binding to Capture and Reclaim ...
Harnessing Peptide Binding to Capture and Reclaim ...

With rising consumer demands, society is tapping into ,wastewater, as an innovative source to recycle depleting resources. Novel reclamation technologies have been recently explored for this purpose, including several that optimize natural biological processes for targeted reclamation. However, this emerging field has a noticeable dearth of synthetic material technologies that are programmed to ...

Virtual ChemBook - Elmhurst University
Virtual ChemBook - Elmhurst University

Ground Water - "mining", ,salt, water intrustion ,Wastewater, Treatment - Elmhurst Sewage Treatment Plant - Virtual Tour: Intermolecular Forces - Ionic, Polar, Non-polar, Hydrogen Bonding Vision - Application of alkene cis/trans isomers: Natural Biochemical Cycles - carbon, nitrogen, and phosphorus cycles

Formulation of Corrosion Inhibitors | IntechOpen
Formulation of Corrosion Inhibitors | IntechOpen

28/3/2019, · 2. Inhibitors for ,acid solution,. In various corrosive media, acidic gases and liquids are of strong corrosive medium. The rate of metal corrosion in acidic medium is much faster than that in other media, especially in sulfuric ,acid,, hydrochloric ,acid,, nitric ,acid,, phosphoric ,acid,, hydrofluoric ,acid,, citric ,acid,, and sulfamic ,acid,, which are commonly used in pickling and removing iron oxide ...

Water purification - Wikipedia
Water purification - Wikipedia

Water purification, is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water fit for specific purposes. Most water is purified and disinfected for human consumption (drinking water), but ,water purification, may also be carried out for a variety of other purposes, including medical, pharmacological, ,chemical, ...

Advanced Reduction Processes: A New Class of Treatment ...
Advanced Reduction Processes: A New Class of Treatment ...

15/5/2013, · Batch screening experiments were conducted to identify effective ARPs by applying several combinations of activation methods (ultraviolet light, ultrasound, electron beam, and microwaves) and reducing agents (dithionite, sulfite, ferrous iron, and ,sulfide,) to degradation of four target contaminants (perchlorate, nitrate, perfluorooctanoic ,acid,, and 2,4 dichlorophenol) at three pH-levels (2.4 ...

Method For Preparing Thionocarbamate And Co-producing 2 ...
Method For Preparing Thionocarbamate And Co-producing 2 ...

[0074] 12.78 parts of benzyl chloride are added into 50 mL of aqueous ,solution containing, 10.0 parts of ,sodium, 2-hydroxyethyl thiolate, and the mixture reacts for 1 h at 10.degree. C. to obtain an oil phase which is the hydroxyethyl benzyl ,sulfide, with the purity of 89.97% and the yield of 96.5% based on the ,sodium, 2-hydroxyethyl thiolate.

Uranium Remediation by Ion Exchange and Sorption Methods ...
Uranium Remediation by Ion Exchange and Sorption Methods ...

Recovery, of uranium from surface and ground water waste streams depends strongly on the type of uranium species in ,solution,. Determining the distribution of these species is a complex analytical problem and various extraction techniques are required to determine speciation (6–8).These species can be in the form of colloids or dissolved ions.

RECOVERY OF OLEUM FROM SPENT ACID | Science essays ...
RECOVERY OF OLEUM FROM SPENT ACID | Science essays ...

Abstract Sulfuric ,acid, is widely used as raw material in various industries such as textile, pigment, dyes, metal processing, pharmaceuticals, pulp and paper industries,etc. Spent ,acid recovery, process is designed to regenerate or recover sulfuric ,acid, from a variety of spent ,acid containing, …

Studies on Feasibility of Reverse Osmosis (Membrane ...
Studies on Feasibility of Reverse Osmosis (Membrane ...

Tanneries reusing ,wastewater, by combination of conventional and advanced Reverse Osmosis (RO) treatment technologies were assessed for technical and economic viabilities. Conventional treatment methods such as neutralization, clari-flocculation and biological processes are followed to clean the effluents before feeding to RO membrane modules.

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