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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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Domestic sewage acid mine wastewater
(PDF) BIOTECHNOLOGY FOR WASTE AND WASTEWATER TREATMENT ...
(PDF) BIOTECHNOLOGY FOR WASTE AND WASTEWATER TREATMENT ...

BIOTECHNOLOGY FOR WASTE AND WASTEWATER TREATMENT,. Adel Mageed. Gary Bennett. Bruce Rittmann. Pubul Martín. Saeed Aghajani. John Evans. Adel Mageed. Gary Bennett. Bruce Rittmann. Pubul Martín. Saeed Aghajani. John Evans. Download PDF. Download Full PDF Package. This paper. A short summary of this paper.

Photochemical Treatments of Textile Industries Wastewater†
Photochemical Treatments of Textile Industries Wastewater†

treatment, of textile ,industrial wastewater,. These are: 1) Physico-chemical methods; 2) Advanced oxidation methods; 3) Biological sludge methods. The main operational methods used for the ,treatment, of textile ,industrial, water involve physical and chemical proce-sses20,21. Ho wev er, these tec hniques ha ve man y disad vanta ges22.

METHOD 7196A CHROMIUM HEXAVALENT (COLORIMETRIC)
METHOD 7196A CHROMIUM HEXAVALENT (COLORIMETRIC)

2O 7, (analytical reagent grade), in reagent water and dilute to 1 liter (1 mL = 50 ug ,Cr,). 5.3 Potassium dichromate standard solution: Dilute 10.00 mL potassium dichromate stock solution to 100 mL (1 mL = 5 ug ,Cr,). 5.4 Sulfuric ,acid,, 10% (v/v): Dilute 10 mL of distilled reagent grade or spectrograde quality sulfuric ,acid,…

9.4: Redox Titrations - Chemistry LibreTexts
9.4: Redox Titrations - Chemistry LibreTexts

The determination of, COD, is particularly important in managing, industrial wastewater treatment, facilities where it is used to monitor the release of organic-rich wastes into municipal sewer systems or the environment. A sample’s, COD, is determined by refluxing it in the presence of excess, K 2 Cr 2 O 7,…

Handbook of water and wastewater treatment technology ...
Handbook of water and wastewater treatment technology ...

This handbook is a collection of exact and useful information relating to the ,treatment, of water and ,wastewater, for municipal, sanitary, and ,industrial, uses. The operations and processes implemented by users of water are numerous and an attempt has been made to reduce those described to the practical limits of a single volume.

Integrated ozonation and biotreatment of bio-treated ...
Integrated ozonation and biotreatment of bio-treated ...

For treatment of BTPW by ozonation combined with a biological process, the BTPW was first treated by ozonation under conditions of initial pH value 11, initial COD Cr 392.7 mg/L, temperature 25 °C, and ozone concentration of 24.8 mg/L for 30 and 60 min, respectively.

Nano-MoO2 activates peroxymonosulfate for the degradation ...
Nano-MoO2 activates peroxymonosulfate for the degradation ...

15/3/2021, · The loading of the catalyst is a crucial factor in the ,wastewater treatment, process (Sun et al., 2019).The effect of catalyst loading (0-0.5 g L −1) on the degradation of PAH derivatives was investigated (Fig. S4 panel A and Fig. S5 panel A).The degradation rate of all PAH derivatives was 100% when the nano-MoO 2 does was increased from 0 g L −1 to 0.5 g L −1, except for 1-naphthol ...

REMOVAL OF ORGANIC MATTER FROM SOME WASTEWATERS …
REMOVAL OF ORGANIC MATTER FROM SOME WASTEWATERS …

strength ,industrial, wastewaters ,containing, non-biodegradable substances toxic for microorganisms. Among them, the Fenton method is cost-effective, easy to apply and effective with relatively low-strength ,wastewater containing, organic compounds and had been applied to the decolorization of textile

ES Materials & Manufacturing
ES Materials & Manufacturing

2O 7, at different pH, the interaction between ,Cr,(VI) and CNT is studied as a function of varied solution pH.45 At pH 1, carboxylation is found to occur after ,Cr,(VI) interaction, with FTIR showing 3300 cm–1 from O–H stretching, 1641 cm–1 from C=O vibration, and peaks around 1020–1100 cm–1 due to the C–O–C stretching.

US8192626B2 - Wastewater chemical/biological treatment ...
US8192626B2 - Wastewater chemical/biological treatment ...

A ,wastewater treatment, method employing chemicals for disinfection, and precipitation of suspended solids, heavy metals and phosphates before subsequent aerobic bacterial biological ,treatment, using Nitrosomonas and Nitrobacter bacteria to remove ammonia and nitrates/nitrites and BOD compounds to produce recovered treated ,wastewater, suitable for open water discharge.

Recent advances in the treatment of dye-containing ...
Recent advances in the treatment of dye-containing ...

1/11/2020, · The active chlorine, in the form of gaseous chlorine, hypochlorite ions or hypochlorous ,acid,, is anodically produced from the chloride ion (Eqs. 26–28) which are naturally present or added to the ,wastewater, during ,treatment, (Martínez-Huitle and Panizza, 2018): (26) 2C l − → C l 2 + 2 e − (27) C l 2 + H ,2 O, → HOCl + H + + C l − (28) HOCl → H + + OC l −

Phenolic Wastewaters: Definition Sources and Treatment ...
Phenolic Wastewaters: Definition Sources and Treatment ...

1/6/2016, · The AOPs have been a viable alternative method for the ,wastewater treatment containing, toxic and refractory organic pollutants, being studied in various combinations and are mainly based on intermediate reactions of hydroxyl radicals (•OH), an unstable and very reactive species, resulting in the degradation of toxic organic contaminants due to its high oxidizing potential of 2.8 V under acidic conditions and these processes have the major advantage of being a destructive ,treatment,.

(PDF) BIOTECHNOLOGY FOR WASTE AND WASTEWATER …
(PDF) BIOTECHNOLOGY FOR WASTE AND WASTEWATER …

BIOTECHNOLOGY FOR WASTE AND ,WASTEWATER TREATMENT,. Adel Mageed. Gary Bennett. Bruce Rittmann. Pubul Martín. Saeed Aghajani. John Evans. Adel Mageed. Gary Bennett. Bruce Rittmann. Pubul Martín. Saeed Aghajani. John Evans. Download PDF. Download Full PDF Package. This paper. A short summary of this paper.

Phosphate Recovery from Human Waste via the Formation of ...
Phosphate Recovery from Human Waste via the Formation of ...

Toilet (human) ,wastewater containing, an uncontrolled mixture of urine, feces, and flushing water was taken from a previously described public recycling ,wastewater treatment, system located on the California Institute of Technology campus (Pasadena, CA) via a macerator pump. The residence time in the ,wastewater, tank was approximately 160 d.

ES Materials & Manufacturing
ES Materials & Manufacturing

2O 7, at different pH, the interaction between ,Cr,(VI) and CNT is studied as a function of varied solution pH.45 At pH 1, carboxylation is found to occur after ,Cr,(VI) interaction, with FTIR showing 3300 cm–1 from O–H stretching, 1641 cm–1 from C=O vibration, and peaks around 1020–1100 cm–1 due to the C–O–C stretching.

(PDF) The Nalco Water Handbook 2nd Edition | Hamzah Zuhdi ...
(PDF) The Nalco Water Handbook 2nd Edition | Hamzah Zuhdi ...

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Kinetic study of removal heavy metal from aqueous solution ...
Kinetic study of removal heavy metal from aqueous solution ...

2/7/2020, · Another silica compounds have been used to remove C.I. Basic Violet, ,Acid, Orange ,7,, C.I. Reactive Black 5, C.I. Direct Blue ,7, from the textile ,wastewater, 32,33.

Handbook for Sampling and Sample Preservation of Water and ...
Handbook for Sampling and Sample Preservation of Water and ...

For example, if one desires to measure the flow of water/,wastewater, through a 30.4 cm (12 inch) pipe, take a 60.8 cm (2 foot) length of 30.4 (12 inch) pipe closed at one end, and fill it up with water/,wastewater containing, a known concentration of the radioactive tracer C to obtain mi Hi curies per cubic meter (gallon).

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