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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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wastewater filter
Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...
Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...

The current research provides a new approach for the effective recovery of ,oxalic acid,, and the results suggest that during the initial oxalate group separation stage, >99% of oxalate ions can be precipitated as ferrous oxalate (FeC2O4·2H2O) by an ultrasound-assisted iron powder replacement method (Fe/Fe(III) = 2, tu/s = 5 min, T = 50 °C).

(PDF) Anaerobic Treatment of a Petrochemical Wastewater ...
(PDF) Anaerobic Treatment of a Petrochemical Wastewater ...

Sedimentation resulted in 70% TSS and 37% COD removal. UASB digesters presented comparable treatment efficiencies with rather low COD removals: the best results were 46.4% for …

Electrochemical Recovery of Phosphorus from Acidic Cheese ...
Electrochemical Recovery of Phosphorus from Acidic Cheese ...

In this paper, through ,wastewater, acidification and c.d. altering, we clarified the pptn. process and electrochem. interaction of phosphate and coexisting ions. The removal of P is attributed to amorphous calcium phosphate (ACP) formation, whereas the removal of bicarbonate is mainly due to calcite (CaCO3) formation and ,acid,-base ,neutralization,.

(PDF) Standard Methods For the Examination of Water and ...
(PDF) Standard Methods For the Examination of Water and ...

Standard Methods For the Examination ,of, Water ,and Wastewater,, 23nd edition, 2017

Technologies for Recovering Nutrients from Wastewater: A ...
Technologies for Recovering Nutrients from Wastewater: A ...

9/5/2019, · Energy requirement for NH 3 ,stripping, and adsorption from urine is economical compared to NH 3 production from Haber–Bosch process. Require pH adjustment. Typically used for high strength ,wastewater,. Energy requirement for ,stripping, is inversely proportional to influent NH 3 concentration. Not suitable for cold climates. Gas permeable membranes

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

15/3/2005, · 4. ,Wastewater, treatment flow sheet. According to experiment results above-mentioned, the feasible proposed flow sheet for treating 1-diazo-2-naphthol-4-sulfonic ,acid wastewater, is shown in Fig. 10. At first, this ,wastewater, is treated by extraction of 1-diazo-2-naphthol-4-sulfonic ,acid, …

(PDF) ANAEROBIC TREATMENT OF A PETROCHEMICAL …
(PDF) ANAEROBIC TREATMENT OF A PETROCHEMICAL …

All these altematives would have to be studied at laboratory scale to determine if ,neutralization, of PTA ,wastewater, for anaerobic treatment can be realized at an economical leveL Effluent recycle and CO2 ,stripping, were also retained in Amoco patent (Ely and Olsen. 1989) to decrease caustic soda requirements for aromatic acids dissolution.

Australasian Legal Information Institute
Australasian Legal Information Institute

(3) A contributions plan must not ,contain, a provision that authorises monetary section 7.11 contributions or section 7.12 levies paid for different purposes to be pooled and applied progressively for those purposes unless the council is satisfied that the pooling and progressive application of the money paid will not unreasonably prejudice the carrying into effect, within a reasonable time, of ...

(PDF) Review of Recovery Methods for Acetic Acid from ...
(PDF) Review of Recovery Methods for Acetic Acid from ...

In this paper, existing methods of physical separation of acetic ,acid, from ,wastewater, is presented. Available conventional techniques including fractional distillation, liquid extraction ...

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

----- water, 1 1 hydrochloric ,acid,, tap water and finally deionized distilled water in that order NOTE 1: Chromic ,acid, may be useful to remove organic deposits from glassware, however, the analyst should be cautioned that the glassware must be thoroughly rinsed with water to remove the last traces of chromium This is especially important if chromium is to be included in the analytical scheme A commercial …

Nano and Bio-Based Technologies for Wastewater Treatment ...
Nano and Bio-Based Technologies for Wastewater Treatment ...

Part 2: Nano and Bio-Based Technologies for ,Wastewater, Treatment 5 Coal Power Plant ,Wastewater, Treatment by Thermal and Membrane Technologies J.G. Redelinghuys, E. Fosso-Kankeu, G. Gericke and F. Waanders 5.1 Introduction 5.2 Mineral Scale Formation 5.3 Scale Formation Mechanisms 5.3.1 Super Saturation/Clustering 5.3.2 Nucleation 5.3.3 Crystal ...

H2S Solubility in water $36
H2S Solubility in water $36

It is commonly known as hydrosulfuric ,acid,, sewer gas, and stink damp. People can smell it at low levels The solubility of hydrogen sulfide in water has been measured in the temperature range 10-180 °C at pressures up to 6670 kPa or the hydrate/H 2 S‐rich liquid locus, whichever is …

Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...
Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...

The current research provides a new approach for the effective recovery of oxalic ,acid,, and the results suggest that during the initial oxalate group separation stage, >99% of oxalate ions can be precipitated as ferrous oxalate (FeC2O4·2H2O) by an ultrasound-assisted iron powder replacement method (Fe/Fe(III) = 2, tu/s = 5 min, T = 50 °C).

Drilling Fluids Flashcards | Quizlet
Drilling Fluids Flashcards | Quizlet

The salt of aluminum hydroxide and stearic ,acid, (saturated C-18 fatty ,acid,) with the formula Al(O2C18H35)3. It is a grease-like solid. When mixed with oil (for example, diesel oil) and the mixture sprayed onto the surface of a foamy water mud, it helps the gas bubbles break out of the mud.

Analytical Chem - Term Paper
Analytical Chem - Term Paper

One method for this analysis uses the following reaction in which we oxidize oxalic ,acid, to CO2. 2Fe3+(aq) + H2C2O4(aq) + 2H2O(l) → 2Fe2+(aq) + 2CO2(g) + 2H3O+(aq) 2.2 The balanced chemical reaction provides the stoichiometric relationship between the moles of Fe3+ used and the moles of oxalic ,acid, in the sample being analyzed— specifically, one mole of oxalic ,acid, reacts with two moles of ...

Neutralization - ScienceDirect
Neutralization - ScienceDirect

1/1/2007, · There are many acceptable methods for neutralizing over acidity or over alkalinity of ,wastewater,, such as mixing wastes so that the net effect is a near-neutral pH, passing ,acid, wastes through beds of limestone, mixing ,acid, wastes with lime slurries or dolomitic lime slurries, adding the proper proportions of concentrated solutions of caustic soda (NaOH) or soda ash (Na 2 CO 3) to ,acid, wastes, blowing waste boiler flue to alkaline wastes, and adding sulfuric ,acid, …

1F - apps.dtic.mil
1F - apps.dtic.mil

wastewater, with pilot scalý4RBC.)systems are examined. ... ammonia ,stripping, and denitrification did not play a significant role ... 6.15 ,Acid Neutralization, Capacity of the RBC Biofilms Developed During the Alkaline Chemical Addition Study ...

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