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The patent No. of acid wastewater treatment with phosphogypsum residue

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The patent No. of acid wastewater treatment with phosphogypsum residue
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 …

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.

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

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.

(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.

ApplicATiON: OpTimAl NuTRieNT RATiOs Optimal Nutrient ...
ApplicATiON: OpTimAl NuTRieNT RATiOs Optimal Nutrient ...

and industrial products (methanol, ethanol, acetic acid). cOD:BOD Ratio The ratio of these two sum parameters is a measure of the biodegradability of the wastewater pollution load. If the COD:BOD ratio does not exceed 2:1, the biodegradability is said to be good. Higher values indicate the presence of poorly biodegradable substances.

(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 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 ...

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

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.

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.

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, …

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.

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.

Biochemical oxygen demand - Wikipedia
Biochemical oxygen demand - Wikipedia

Biochemical oxygen demand, is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period. The BOD value is most commonly expressed in milligrams of oxygen consumed per litre of sample during 5 days of incubation at 20 °C and is often used as a surrogate of the degree of organic pollution of water. BOD reduction is used as a gauge of the effectiveness of ,wastewater, ...

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