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Low molecular fracturing flowback fluid

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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Low molecular fracturing flowback fluid
Arsenic Trioxide - Disposal Methods
Arsenic Trioxide - Disposal Methods

Arsenic trioxide, is removed from waste gases by means of electrostatic separators (efficiency 70-90%) or bag filters (efficiency up to 99%). Bag filters, however, require twice to three times as much energy as electrostatic separators.

(PDF) Partial nitrification of high ammonia concentration ...
(PDF) Partial nitrification of high ammonia concentration ...

Therefore, a dissolved oxygen ,concentration, of 1.4 mg/L was selected in order to operate Fig. 4 presents the applied ,nitrogen, loading rate, with the the activated sludge reactor, since it promotes a ,high, level of inlet and outlet ,ammonia, concentrations, during the start-up nitrite accumulation, preserving a ,high ammonia, removal. of the activated sludge reactor.

Removal of arsenic from acid wastewater via sulfide ...
Removal of arsenic from acid wastewater via sulfide ...

1/11/2019, · To achieve a safe treatment of ,arsenic,-,containing acid wastewater,, a new process was proposed, including ,arsenic, removal via sulfide precipitation and hydrothermal mineralization stabilization. Under optimal conditions of sulfide precipitation, 99.65% of ,arsenic, from ,wastewater, was precipitated in the form of amorphous As 2 S 3.

Recovery of Arsenic Trioxide from a Sludge-Like Waste by ...
Recovery of Arsenic Trioxide from a Sludge-Like Waste by ...

23/3/2013, · Arsenic trioxide was recovered from the alkaline leachate by acid precipitation, at an optimal H2SO4/arsenic ratio of 1.9 mol/mol; after washing with diluted acid, the purity of, arsenic trioxide, reached 93.4 % and the total recovery ratio of arsenic was 79 %.

Effect of Ammonia on COD Analysis
Effect of Ammonia on COD Analysis

measure of the organic content of ,wastewater,. In this study, in terference ,of ammonia, with COD analysis was observed when chloride was present and when a 0.25-N potassium dichromate solution was used to prepare the COD vials. The interference increased with increases in both ,ammonia concentration, …

Pretreatment method for wastewater of ammonia nitrogen in ...
Pretreatment method for wastewater of ammonia nitrogen in ...

This invention discloses a method for pretreating ,high,-,concentration ammonia,-,nitrogen wastewater,. The method comprises: (1) introducing ,ammonia nitrogen wastewater, into a reactor (2) adding composite phosphates that are composed of magnesium salt and two or more of phosphates, dihydrogen phosphates, hydrogen phosphates and phosphoric ,acid,, and reacting at pH 8.0-9.5 for 10-60 min (3 ...

Ammonia | CADDIS Volume 2 | US EPA
Ammonia | CADDIS Volume 2 | US EPA

Ammonia, concentrations in streams are rarely ,high, enough to exhibit this odor, but water that has a foul, septic or organic-waste smell may have relatively ,high, concentrations ,of ammonia,. Suspended solids : Suspended solids from ,wastewater, effluents or runoff can contain ,high ammonia, or act as catalysts for bacterial growth promoting accumulation ,of ammonia,.

(PDF) AMMONIA REMOVAL FROM WASTEWATER | Rakesh …
(PDF) AMMONIA REMOVAL FROM WASTEWATER | Rakesh …

Many concentrated ,wastewater, streams produced in food and agro- industry are treated using sludge digestion, and effluents from this process frequently contain ,ammonia, in ,high, concentrations (up to 2 kg/m3). Typically, 40-50-% of the total ,nitrogen, in a municipal treatment plant is found as ,ammonia, in the centrate or filtrate streams.

Effect of Free Ammonia Free Nitrous Acid and Alkalinity ...
Effect of Free Ammonia Free Nitrous Acid and Alkalinity ...

During the treatment of ,wastewater, with ,high, ammonium concentrations, as the effluent of pig slurry coming from the anaerobic digestion, the presence of free ,ammonia, (NH 3 or FA) and/or free nitrous ,acid, (HNO 2 or FNA) can affect the performance of the partial nitrification process.

Ammonia Nitrogen Absorption Tower | Water Pretreatment ...
Ammonia Nitrogen Absorption Tower | Water Pretreatment ...

The ,ammonia nitrogen absorption tower, not only can treat the ,high concentration ammonia nitrogen, exhausting gas by the plant, ... the water or sulfuric ,acid, absorbs the ,ammonia, gas and flows into the bottom of liquid storage tank. ... ,ammonia, removal, ,nitrogen, removal, ,wastewater, treatment, sewage treatment. Inquiry Form.

Arsenic removal from highly-acidic wastewater with high ...
Arsenic removal from highly-acidic wastewater with high ...

1/1/2020, · The HAWA used in the experiment was simulated wastewater, and the raw material used to prepare the HAWA was analytical-grade arsenic trioxide (As, 2 O, 3) sourced from a gold smelter in Hunan province. 50 g of As 2 O 3 and 3 L of de-ionized water were added into a beaker (5 L) and then stirred at 60 °C in a thermostat water bath cauldron, followed by cooling and filtering. 2 L of sulfuric acid (2.5 …

CN101125682A - Method for preparing arsenic trioxide by ...
CN101125682A - Method for preparing arsenic trioxide by ...

The invention relates to a method to produce arsenic trioxide with, waste water containing arsenium,, which, takes waste water containing arsenium, as, raw material, to produce arsenic trioxide.

Ammonia Inhibition of Anaerobic Volatile Fatty Acid ...
Ammonia Inhibition of Anaerobic Volatile Fatty Acid ...

Ammonia inhibition, is an important reason for reactor failures and economic losses in anaerobic digestion. Its impact on acetic ,acid, degradation is well-studied, while its effect on propionic and butyric ,acid, degradation has received little attention and is consequently not considered in the Anaerobic Digestion Model No. 1 (ADM1). To compare ,ammonia inhibition, of the degradation of these three ...

Understanding the Basic Principles of Nitrogen ...
Understanding the Basic Principles of Nitrogen ...

NH3 stands for ,Ammonia Nitrogen,. Organic ,Nitrogen, is derived from amino acids & proteins: Good examples are urea and uric ,acid,. NO2 stands for Nitrite. NO3 stands for Nitrate. N2 stands for ,Nitrogen, Gas. Refractory ,Nitrogen, is the ,nitrogen, that can’t be biologically decomposed. Alkalinity is easiest defined as the ability to resist a drop in pH.

Shortcut Nitrification Treatment of High Strength Ammonia ...
Shortcut Nitrification Treatment of High Strength Ammonia ...

31/12/2016, · ,Wastewater, containing ,high concentration ammonia nitrogen, was treated by Yu et al. under a 12 h operation cycle; when the ,ammonia nitrogen concentration, in the influent was 600 mg/L, the ,ammonia, removal ratio was 71.3% [1].

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