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Fracturing flowback fluid for shale gas production

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 for shale gas production
RESEARCH WASTE WATER PFAS in wastewater: disposal …
RESEARCH WASTE WATER PFAS in wastewater: disposal …

wastewater, treatment ,can, influence PFAS concentrations in the sludge. ... some PFAS may ,volatilize, and transfer to the air with the flue gas; some portion ... perfluorooctanoic ,acid, (PFOA, C8), perfluorononanoic ,acid, (PFNA, C9), and perfluorodecanoic ,acid, (PFDA, C10).

3-Chlorobenzoic acid | C7H5ClO2 - PubChem
3-Chlorobenzoic acid | C7H5ClO2 - PubChem

An estimated Henry's Law constant of 3.88X10-8 atm-cu m/mol(1,SRC), indicates that m-,chlorobenzoic acid, will not ,volatilize, from either water or moist soil(SRC). Based on this value, the estimated half-life for volatilization from a model river 1 m deep, flowing at 1 m/sec …

Nitrates in Drinking Water - Penn State Extension
Nitrates in Drinking Water - Penn State Extension

Nitrates, in drinking ,water can, also affect certain adults and small children. Pregnant women ,can, pass methemoglobin on to developing fetuses and low birth weights have been attributed to high ,nitrates, in ,water,. However, nursing mothers do not pass nitrites to infants via their milk.

Lauric acid | C12H24O2 - PubChem
Lauric acid | C12H24O2 - PubChem

Lauric acid, is an inexpensive, non-toxic and safe to handle compound often used in laboratory investigations of melting-point depression. ,Lauric acid, is a solid at room temperature but melts easily in boiling water, so liquid ,lauric acid can, be treated with various solutes and used to determine their molecular masses.

Research and Development Health and Environmental Effects ...
Research and Development Health and Environmental Effects ...

ECAO-CIN-G007 500ECAOCING007 &EPA Research and ,Development HEALTH AND ENVIRONMENTAL EFFECTS DOCUMENT FOR BENZOIC ACID, Prepared for OFFICE OF SOLID WASTE AND EMERGENCY RESPONSE U.S. Environmental Protection Agency ' Region V, Library by 230 South Dearborn Street " Chicago, Illinois 60604 Environmental Criteria and Assessment Office …

Performic acid | CH2O3 - PubChem
Performic acid | CH2O3 - PubChem

Performic acid,, or PFA (CH(2)O(3)), is a well-known oxidizing agent and disinfectant in the medical field and food industry. It has recently become available on a commercial scale for potential use in ,wastewater, disinfection.

(PDF) A Novel Recovery Method for Treating Wastewater ...
(PDF) A Novel Recovery Method for Treating Wastewater ...

By optimizing the conditions, it was possible to recover more than 98 percent of the boron and 99.9 percent of the, fluorine, from model, wastewater, samples containing, fluoride, (7000 mg L-1) and...

Ricinoleic acid | C18H34O3 - PubChem
Ricinoleic acid | C18H34O3 - PubChem

Ricinoleic acid, is not expected to ,volatilize, from dry soil surfaces(SRC) based upon an estimated vapor pressure of 4.49X10-3 mm Hg at 25 °C(SRC), determined from a fragment constant method(5). ,Ricinoleic acid, degraded 29.7% of theoretical oxygen demand after 24 hours using activated sludge(6), suggesting that biodegradation is an important environmental fate process(SRC).

REMOVAL OF FLUORIDE FROM WASTEWATER BY CALCINED …
REMOVAL OF FLUORIDE FROM WASTEWATER BY CALCINED …

World Health Organization (WHO) sets a 1.5 mg/L as the higher limit of fluoride ,content, in drinking water [1]. The high concentration of fluoride leads to dental and skeletal fluorosis such as mottling of teeth, softening of bones and ossification of tendons and ligaments [2]. …

Urea - Wikipedia
Urea - Wikipedia

Urea,, also known as carbamide, is an organic compound with chemical formula CO(NH 2) 2.This amide has two –NH 2 groups joined by a carbonyl (C=O) functional group.. ,Urea, serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals.It is a colorless, odorless solid, highly soluble in water, and ...

Treatment of acidic wastewater via fluoride ions removal ...
Treatment of acidic wastewater via fluoride ions removal ...

15/11/2020, · Large volume of water is required during this process to facilitate the dissolution reaction and for many other production routines. The resulting wastewater is typically an acidic (pH 1.5–2) solution composed of mainly, phosphate, sulfate, fluoride, sodium, calci,um and magnesium ions.

N-Nitrosodimethylamine - Wikipedia
N-Nitrosodimethylamine - Wikipedia

N-Nitrosodimethylamine, (NDMA), also known as dimethylnitrosamine (DMN), is an organic compound with the formula (CH 3) 2 NNO. It is one of the simplest members of a large class of N-nitrosamines.It is a volatile yellow oil. NDMA has attracted wide attention as being highly hepatotoxic and a known carcinogen in lab animals.

Chapter 2 - Drainage water quality
Chapter 2 - Drainage water quality

It ,can, also ,volatilize,. Recent sampling of surface runoff from irrigated areas in the San Joaquin Valley of California showed ... The presence of coliform or faecal coliform would be an indication that other types of ,wastewater,, such as municipal, industrial or ... Improved drainage of sulphaquepts results in an increased discharge of ,acid, water.

4-170 INORGANIC NONMETALS (4000)
4-170 INORGANIC NONMETALS (4000)

Four categories of sulfide in water, ,wastewater,, and sediment ,can, be operationally defined: a. Total sulfide includes dissolved H 2 S and HS and ,acid,-volatile metallic sulfides present in particulate matter. The pK a2 of H 2 S is so high that the concentration of S 2 is negligible at all pH values. Copper and silver sulfides are so insoluble that they

FLUORIDE WASTEWATER TREATMENT (FWT)
FLUORIDE WASTEWATER TREATMENT (FWT)

Typical concentrations, range up to 49%., Untreated fluoride concentrations in wastewater typically seen are in the range of a few hundred ppm up to several thousand ppm. Wastech standard systems can treat these levels of fluoride in wastewater to below required discharge limits.

Fluoride Removal from Industrial Wastewater | Saltworks ...
Fluoride Removal from Industrial Wastewater | Saltworks ...

15/12/2017, · In the microelectronics industry, fluoride wastewaters are generated during hydrofluoric acid etching of semiconductors. Hydroflouric acid is also employed in solar cells and metal plating industries. Typical concentrations of fluoride in these wastewaters can range, from 100 mg/L to more than 10,000 mg/L.

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