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Treatment of acid wastewater by alkali substances such as hydrated lime

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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Treatment of acid wastewater by alkali substances such as hydrated lime
CN103112968B - Method for treating high-COD (Chemical ...
CN103112968B - Method for treating high-COD (Chemical ...

The invention discloses a method for treating ,high,-,COD, (,Chemical Oxygen Demand,) components in phenoxyalkanoic ,acid, production ,wastewater,. The method comprises the following steps: separating the ,high,-,COD, components from the phenoxyalkanoic ,acid, production ,wastewater,; carrying out esterification reaction on the ,high,-,COD, components and the alcohol, so as to obtain the ester product.

Ch-3 Carlos corr.ppt - un-ihe.org
Ch-3 Carlos corr.ppt - un-ihe.org

Parameter High Medium Low ,COD, total 1200 750 500 Typical content in raw municipal ,wastewater, g/m3 ,COD, soluble 480 300 200 BOD total 560 350 230 Total nitrogen 100 60 30 Ammonia N 75 45 20 Total P 25 15 6 SS 600 400 250 VSS 480 320 200 Parameter High Medium Low Total Nitrogen 100 60 30 Nutrients content in raw municipal ,wastewater, g/m3 Ammonia N 75 45 20

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.

Converting Chemical Oxygen Demand (COD) of Cellulosic ...
Converting Chemical Oxygen Demand (COD) of Cellulosic ...

27/1/2017, · The wastewater contains high chemical oxygen demand (COD,, approximately 125 g/L), and various residual sugars and inhibitor compounds from pretreatment step.

Treatment of highly acidic wastewater containing high ...
Treatment of highly acidic wastewater containing high ...

1/10/2017, · The, wastewater, was highly acidic with extremely, high COD., The overall process was optimized over various parameters like current density (A/m 2), electrode gap and H 2 O 2 dosage. Moreover,, COD, degradation, specific energy consumption, and operating cost were calculated for the overall treatment process.

Wastewater Treatment | Biogreen
Wastewater Treatment | Biogreen

Fluidized bed-Fenton method (Fenton IV) is also applicable for low concentrations of biological decomposition of, waste water, (COD <1000 mg/L, are generally used for COD <500 mg/L) treatment,. It can be used for biological post-treatment to enhance and release stream, which ensures the quality of the discharge water quality.

Design Considerations of High Strength Wastewater ...
Design Considerations of High Strength Wastewater ...

Anything NOT “residential waste” IS “,high, strength.”. Sometimes, even residential waste is ,high, strength. NSF Definition of Residential Strength Concentrations. BOD. 5. = 100 to 300 mg/L TSS = 100 to 250 mg/L TKN = 35 to 70 mg/L. FOG ≤ 25 mg/L (not NSF) ,High, Strength Commercial. Other ,High, …

Treatment of High Concentration Acid Plasticizer ...
Treatment of High Concentration Acid Plasticizer ...

Compared with the conventional bubble generator, the ,chemical oxygen demand, (,COD,) removal rate was 2.04, 5.9, 3.26 times higher than those of the conventional bubble contactor at the same initial ...

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.

PHARMACEUTICAL MANUFACTURING
PHARMACEUTICAL MANUFACTURING

acid,, etc. Solvents are organic compounds, which result in ,high, concentrations of ,COD, in the ,wastewater,. Solvents can be toxic for biomass in biological treatment. Some solvents are more volatile than water (Low Boiling Point solvents) meaning that evapoconcentration is not a treatment option as they will be evaporated and found in the

(PDF) COD Removal of Different Industrial Wastewater by ...
(PDF) COD Removal of Different Industrial Wastewater by ...

The drop in efficiency on the acid side is less dramatic given the logarithmic function of pH, and is generally a concern only with high application rates.In highly concentrated waste streams (>10 g/L COD), it may be necessary to perform the oxidation in steps, readjusting the pH upwards to pH 4-5 after each step so as to prevent low pH from inhibiting the reaction.

CN103112968B - Method for treating high-COD (Chemical ...
CN103112968B - Method for treating high-COD (Chemical ...

The invention discloses a method for treating high-,COD, (,Chemical Oxygen Demand,) components in phenoxyalkanoic ,acid, production ,wastewater,. The method comprises the following steps: separating the high-,COD, components from the phenoxyalkanoic ,acid, production ,wastewater,; carrying out esterification reaction on the high-,COD, components and the alcohol, so as to obtain the ester product.

Wastewater Treatment | Biogreen
Wastewater Treatment | Biogreen

The electro-reduction-Fenton method of waste water treatment effect is usually better than Fenton method for High concentration of COD of waste water (COD> 1000mg / L), this may be due to post-Fenton Oxidation of organic intermediates segment which is more than a simple organic acids (such as the acetic acid, oxalic acid, formic acid), ·OH (hydroxyl radical) that has lower reaction rate to …

(PDF) Behavior of lipids in biological wastewater ...
(PDF) Behavior of lipids in biological wastewater ...

1/9/2006, · ,wastewater, are due to the negative effects of salini ty and toxic materials on the biologic al treatment process. Saponification as a method for enhancing biodegradation

Treatment of Citric Acid Wastewater for High Quality ...
Treatment of Citric Acid Wastewater for High Quality ...

A large citric acid factory is situated close to a rather small river, so the discharge of its, wastewater, caused severe water quality problems. A highly concentrated stream holds more than 90% of the total COD-load, the lowly concentrated stream about 80% of the flow.

The effect of glycerol on readily biodegradable chemical ...
The effect of glycerol on readily biodegradable chemical ...

The ,COD, of ,wastewater, with limited VFA (e.g., 10 mg ,COD,/L) increased up to 2,502 mg ,COD,/L where propionic ,acid, (2,468 mg ,COD,/L) exists as the primary end product with a small quantity of acetic ,acid, (34 mg ,COD,/L). Propionic ,acid, was the main VFA component fermented from the glycerol addition.

Production of high-concentration n -caproic acid from ...
Production of high-concentration n -caproic acid from ...

21/4/2017, · The main characteristics of this ,wastewater, were TCOD (total ,chemical oxygen demand,) 270–310 mg ,COD,/L, SCOD (soluble ,chemical oxygen demand,) 170–215 mg ,COD,/L, acetate 50–80 mg ,COD,/L, TN (total nitrogen) 26–37 mg/L, and TP (total phosphorus) 3.0–5.5 mg/L, pH 7.4–7.6.

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