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Biochemical characteristics of acid dye wastewater

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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Biochemical characteristics of acid dye wastewater
A Modified Method for the Accurate Determination of ...
A Modified Method for the Accurate Determination of ...

More specifically, when the concentration of K 2 Cr 2 O 7 was 0.025 mol・L −1, the interferences of Cl − on COD Cr determination were the slightest. Therefore, the optimum concentration of K 2 Cr 2 O 7 in this study was identified as 0.025 mol・L −1 for the determination of …

New BOD determination for industrial wastewater plant
New BOD determination for industrial wastewater plant

Its patented photo-electrochemical ,COD, analysis uses a nanotechnology based approach to oxidize soluble organics in the sample in situ. PeCOD eliminates the use of harmful chemicals. It generates results in 15 minutes through the use of UV activated TiO 2 (titanium dioxide) oxidation and an internal electrode, by directly measuring electron transfer.

Characteristics of Wastewater | Wastewater Management
Characteristics of Wastewater | Wastewater Management

(vii) Chemical oxygen demand (COD) (viii) Bio-chemical oxygen demand (BOD) (ix) Stability and relative stability. (i) pH Value: The test for pH value of wastewater is carried out to determine whether it- is acidic or alkaline in nature. Fresh sewage is generally alkaline in nature, (its pH value between 7.3 to 7.5).

Determination of chemical oxygen demand (COD) using ...
Determination of chemical oxygen demand (COD) using ...

A new method for determining ,wastewater chemical oxygen demand, (,COD,) using ultrasonic digestion and titration based on oxidation reduction potential (ORP) was developed. ,COD, values of potassium hydrogen phthalate solution obtained by ultrasonic digestion were well …

Determination of the chemical oxygen demand (COD) in water ...
Determination of the chemical oxygen demand (COD) in water ...

COD, is widely used in the analysis of natural water, to control ,wastewater, treatment from organic various substances. Lumex Instruments provides the method and equipment (FLUORAT-02 analyzer and TERMION thermoreactor) for accurate, easy-to-use and cost-effective ,COD determination, using the small-scale sealed tube method (ST-,COD,).

A Rapid Determination Method of Chemical Oxygen Demand in ...
A Rapid Determination Method of Chemical Oxygen Demand in ...

A Rapid Determination Method of Chemical Oxygen Demand in Printing and Dyeing Wastewater Using Ultraviolet Spectroscopy Huoliang Kong1*, Huifang Wu2 ABSTRACT: A rapid method to determine chemical oxygen demand (COD) in printing and dyeing wastewater using ultraviolet (UV) spectroscopy was developed in this study. The UV method has several

Determination of the chemical oxygen demand (COD) in water ...
Determination of the chemical oxygen demand (COD) in water ...

COD, is widely used in the analysis of natural water, to control ,wastewater, treatment from organic various substances. Lumex Instruments provides the method and equipment (FLUORAT-02 analyzer and TERMION thermoreactor) for accurate, easy-to-use and cost-effective ,COD determination, using the small-scale sealed tube method (ST-,COD,).

Determination of Biological Oxygen Demand (BOD) in Waste ...
Determination of Biological Oxygen Demand (BOD) in Waste ...

6.3 Immediately close the bottles when filled and there should not be any air bubble in the bottle. 6.4 Mark the bottles as blank and sample. 6.5 Incubate one sample and one blank bottle at 20 °C for 5 days. 6.6 Analyze immediately remaining one blank and one sample bottle of dissolved oxygen (DO).

Understanding Laboratory Wastewater Tests: I. ORGANICS ...
Understanding Laboratory Wastewater Tests: I. ORGANICS ...

14/10/2010, · The COD test uses a chemical (potassium dichromate in a 50% sulfuric acid solution) that “oxidizes” both organic (predominate) and inorganic substances in a wastewater sample, which results in a higher COD concentration than BOD concentration for the same wastewater sample since only organic compounds are consumed during BOD testing.

Determination of the Internal Chemical Energy of Wastewater
Determination of the Internal Chemical Energy of Wastewater

In this study a new methodology of preparing samples for measuring the internal chemical energy in ,wastewater, is developed, and an analysis is made between this and the ,COD, measurements taken. The mixed ,wastewater, examined, using freeze-drying of samples to minimize loss of volatiles, had 16.8 kJ/L, while the domestic ,wastewater, tested had 7.6 kJ/L nearly 20% higher than previously estimated.

MODIFIED PROCEDURE Chemical Oxygen Demand (COD) COD ...
MODIFIED PROCEDURE Chemical Oxygen Demand (COD) COD ...

DEFINITION: The Chemical Oxygen Demand (COD) test measures the oxygen required to oxidize organic matter in water and wastewater samples by the action of strong oxidizing agents under acid conditions. . MATERIALS: 15 ml COD digestion tubes Potassium dichromate Erlenmeyer flasks Silver sulfate - sulfuring acid reagent Burette, 25 ml, 1 1. Ferrous ammonium sulfate

Understanding Laboratory Wastewater Tests: I. ORGANICS ...
Understanding Laboratory Wastewater Tests: I. ORGANICS ...

matter have traditionally been used to determine the relative “strength” of a wastewater sample. Today there are four common laboratory tests used to determine the gross amount of organic matter (i.e., concentrations > 1.0 mg/L) in waste-water: 1. BOD (biochemical oxygen demand) - See Page 3. 2. COD (chemical oxygen demand) - See Page 5. 3.

DETERMINATION OF COD IN SPENT ACID WASTEWATER BY …
DETERMINATION OF COD IN SPENT ACID WASTEWATER BY …

the ,determination of COD, in the spent ,acid wastewater, by sealing method was researched in this paper。The experimental results showed that the nethod is economical,simple and accurate so that it can eliminate the inteference of CL-efficiently.Therefore,it can be used to determin the value ,of COD, of spent ,acid wastewater,。

A Modified Method for the Accurate Determination of ...
A Modified Method for the Accurate Determination of ...

In this work, in order to find a method for the accurate determination of chemical oxygen demand (COD Cr) in high chloride oilfield wastewater, the interferences of chloridion (Cl−) on COD Cr determination were first studied based on the Chinese national standard GB 11914-89. …

Characteristics of Wastewater | Wastewater Management
Characteristics of Wastewater | Wastewater Management

(vii) ,Chemical oxygen demand, (,COD,) (viii) Bio-,chemical oxygen demand, (BOD) (ix) Stability and relative stability. (i) pH Value: The test for pH value of ,wastewater, is carried out to determine whether it- is acidic or alkaline in nature. Fresh sewage is generally alkaline in nature, (its pH value between 7.3 to 7.5).

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