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oil extraction wastewater reinjection control technology definition biology

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 extraction wastewater reinjection control technology definition biology
CN103159342B - Hydrofluoric acid wastewater treatment ...
CN103159342B - Hydrofluoric acid wastewater treatment ...

Coagulant, aids containing salt and aluminum salt are added together with acid to form iron, fluoride and, aluminum, fluoride, deposit, and the result solution is naturalized. Polymer, coagulant, aids are...

Calcium fluoride recovery from fluoride wastewater in a ...
Calcium fluoride recovery from fluoride wastewater in a ...

water ,treatment, plants require fluoride removal and recovery from the effluent prior to discharge to the environment. The common ,treatment, to remove fluoride from industrial waste-waters is chemical precipitation, which offers a cost-effective solution to several fluoride wastewaters sources (Saha, 1993; Yang and Smith, 1990).

Calcium fluoride recovery from fluoride wastewater in a ...
Calcium fluoride recovery from fluoride wastewater in a ...

1/2/2007, · A, method, to remove, fluoride, from, wastewater, in a fluidized bed reactor using silica sand as seed material has been developed by DHV Raadgevend Ingenieursbureau (Patent No. US 6,106,509). An advantage of the process is the ability to produce highly pure, nearly dry calcium, fluoride, pellets.

Ammonium fluoride ((NH4)F) | NH4F - PubChem
Ammonium fluoride ((NH4)F) | NH4F - PubChem

Hazardous Substances Data Bank (HSDB) Hydrofluoric ,acid, was removed from waste gas from the mfr of fertilizers, phosphates, aluminum and enamels by 2 stage absorption with aqueous ,ammonium fluoride, and ammonium bifluoride. Myczka S et al; Pol ,Patent No,…

Remover of fluoride ion and treatment method for ...
Remover of fluoride ion and treatment method for ...

The present invention's removing agent for dissolved ,fluoride, ion and ,treatment method, for ,wastewater containing fluoride, using the same can remove ,fluoride, ion below 10 ppm easily and with low cost, can have the whole of the sludge generated from the ,treatment, process reusable, can greatly reduce the time necessary for ,wastewater treatment, by simplifying the conventional ,treatment, process for ,wastewater containing fluoride, …

System and Method for Treatment of Acidic Wastewater ...
System and Method for Treatment of Acidic Wastewater ...

A ,method, of influent ,wastewater, and removing fluorides and silica from the influent ,wastewater,, the ,method, comprising:a. inhibiting conditions in the influent ,wastewater, that promote the formation of at least one of ,fluoride, ions or silicate ions and promoting conditions in the ,wastewater, that favor the formation of hydrofluorosilicic ,acid, by initially chemically adjusting a pH of influent ...

System and Method for Treatment of Acidic Wastewater ...
System and Method for Treatment of Acidic Wastewater ...

A ,method, of influent ,wastewater, and removing fluorides and silica from the influent ,wastewater,, the ,method, comprising:a. inhibiting conditions in the influent ,wastewater, that promote the formation of at least one of ,fluoride, ions or silicate ions and promoting conditions in the ,wastewater, that favor the formation of hydrofluorosilicic ,acid, by initially chemically adjusting a pH of influent ...

US6464883B2 - Remover of fluoride ion and treatment method ...
US6464883B2 - Remover of fluoride ion and treatment method ...

US6464883B2 - Remover of, fluoride ion and treatment method for wastewater containing fluoride ion, using the same - Google Patents

Water and Wastewater Treatment Systems by Novel Integrated ...
Water and Wastewater Treatment Systems by Novel Integrated ...

Modularly installed energy-saving membrane distillation ,wastewater treatment, device and ,method, Publication number: CN106865663A Publication date: 2017-06-20: The present invention represents a modularly installed energy-saving MD ,wastewater treatment, device which consists of a post-,treatment, and primary ,treatment, module.

Glossary - Pure Water Enterprises
Glossary - Pure Water Enterprises

Hydrogen form weak ,acid, cation exchangers that have been ,neutralized, with sodium hydroxide to the sodium form, however, can effectively remove both carbonate and noncarbonate water hardness cations; thus weak ,acid, cation resins can be used to soften wafers that, because of high total dissolved solids, are not possible or practical to treat with strong ,acid, cation resins.

ACID DRAINAGE FROM MINES AND ITS RELATEDPROBLEMS by …
ACID DRAINAGE FROM MINES AND ITS RELATEDPROBLEMS by …

Acid, Mine Drainage (AMD), is the outflow of acidic water from mining operations including waste rock, tailings, and exposed surfaces in open pits and underground workings. ARD forms as a result of ...

Device for treating fluorine-containing water - Patent ...
Device for treating fluorine-containing water - Patent ...

A ,treatment, device includes a first ,treatment, means for adding, to fluorine-,containing, for-,treatment, water, a reactive compound which reacts with fluorine to form a ,fluoride, and which does not apply an OH group, so that a suspension is formed; a second ,treatment, means for separating the suspension obtained by the first ,treatment, means into a solid and a liquid; and a third ,treatment, means for ...

Chemical Technology and Economics in Environmental ...
Chemical Technology and Economics in Environmental ...

Strong Basic Anion-Exchange Resins Ion-exchange resins of the strongly basic type could be used to remove boron from industrial waste streams,— Two major drawbacks would occur with the use of these resins: (a) strong basic ion-exchange resins are highly pH dependent, i.e., maximum absorption is at pH 7.5 to 9,0 with almost ,no, absorption at pH 5;—' and (b) strong basic ion-exchange resins are not …

Method for oxidizing liquid-phase neutralization of ...
Method for oxidizing liquid-phase neutralization of ...

Known liquid-phase oxidation, for example nitrophenolic compounds by passing the cleaned flow through the tubular reactor at a temperature of 325-370°and the pressure 220-345 bar. This ,method, is effectively used for ,treatment, of ,wastewater, with low concentration of organic compounds (0,5-2%) [U.S. Pat. 5250193 USA, IPC 5 02 F 1/72.

US Patent for Aluminum-doped iminodiacetic acid group ...
US Patent for Aluminum-doped iminodiacetic acid group ...

Conventional methods of removing fluoride from wastewater, such as the precipitation by addition of calcium chloride known from DE-A 2801724 or the adsorption of fluoride on activated alumina known from DE-A 3004058, are suitable only to a limited degree, if at all, for drinking water treatment.

Treatment of aqueous effluent for fluoride removal ...
Treatment of aqueous effluent for fluoride removal ...

1/8/1993, · When iron cryolite is not wanted or the original effluent contains less than 1000 mg 1-~ fluoride, it is treated with calcium chloride only. Alternatively the effluent containing, fluoride, of low acidic pH is treated with lime to precipitate calcium fluoride.

Method of fluoride-containing wastewater treatment ...
Method of fluoride-containing wastewater treatment ...

A, method, of, fluoride-containing wastewater treatment,, comprising: performing a primary, fluoric ion concentration, detection process upon wastewater, the primary, fluoric ion concentration, detection process comprising: providing a buffer solution having a stable pH value; adding a fixed amount of the wastewater into the buffer solution; detecting a, fluoric ion concentration, in the buffer solution; and estimating the amount of, fluoride contained, in the, wastewater;, …

Method for oxidizing liquid-phase neutralization of ...
Method for oxidizing liquid-phase neutralization of ...

Known liquid-phase oxidation, for example nitrophenolic compounds by passing the cleaned flow through the tubular reactor at a temperature of 325-370°and the pressure 220-345 bar. This method is effectively used for treatment of wastewater with low concentration of organic compounds (0,5-2%) [U.S. Pat. 5250193 USA, IPC 5 02 F 1/72.

Calcium Fluoride Recovery from Fluoride Wastewater in a ...
Calcium Fluoride Recovery from Fluoride Wastewater in a ...

Fluoride removal from aqueous solutions can be achieved by several methods including coagulation/ precipitation [6], electrocoagulation [7], fluidized-bed crystallization [8], and adsorption/ion ...

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