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Acid wastewater is not a toxic substance

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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Acid wastewater is not a toxic substance
Oxygen Demand Chemical - Hach Company
Oxygen Demand Chemical - Hach Company

0.7 to 40.03 mg/L ,COD, (ULR); 3 to 150 mg/L ,COD, (LR); 20 to 1500 mg/L ,COD, (HR); 200 to 15,000 mg/L ,COD, (HR Plus) Scope and application: For water and ,wastewater,. Digestion is required. 1 Ranges 3 to 150 mg/L ,COD, and 20 to 1500 mg/L ,COD, are USEPA approved for ,wastewater, …

METHOD 14XXXCO D Chemical Oxygen Demand (COD) by ...
METHOD 14XXXCO D Chemical Oxygen Demand (COD) by ...

In these Spectroquant® ,COD, cell tests, the amount of potassium dichromate which remains unchanged, is measured photometrically (as chromate). 2.4 For the 100 to10,000 mg/L concentration range, there are three different Spectroquant® ,COD, cell tests (Section 17.0, Table 1, items 14541, 14691, and 14555). In these Spectroquant® ,COD

Oxygen Demand Chemical - Hach Company
Oxygen Demand Chemical - Hach Company

0.7 to 40.03 mg/L ,COD, (ULR); 3 to 150 mg/L ,COD, (LR); 20 to 1500 mg/L ,COD, (HR); 200 to 15,000 mg/L ,COD, (HR Plus) Scope and application: For water and ,wastewater,. Digestion is required. 1 Ranges 3 to 150 mg/L ,COD, and 20 to 1500 mg/L ,COD, are USEPA approved for ,wastewater, analyses (Standard Method 5220 D), Federal

final repport - mla.com.au
final repport - mla.com.au

Of the seven sampling locations, six were found to have a maximum COD content between 10000-20000 mg/L with only the effluent from the cattle holding yards having a lower COD content, with a maximum of 2580 mg/L. The waste streams with a maximum COD content of more than 20000 mg/L were the ‘alley’, ‘manhole’ and ‘render’.

Characterisation of winery wastewater from continuous flow ...
Characterisation of winery wastewater from continuous flow ...

The authors also reported that acetic ,acid, (27 to 663 mg/L) and ethanol (concentrations not given), contributed significantly to the overall ,COD,. In a seasonal winery ,wastewater, characterisation study, Sheridan et al. found ethanol and acetic ,acid, to be the primary contributors to ,COD, in two wineries, and did not detect glucose in any of the samples taken throughout the year.

The Treatment of High Concentration Dyeing Wastewater with ...
The Treatment of High Concentration Dyeing Wastewater with ...

water was evaporated to become concentrated sulphuric ,acid,, in order for the cotton fibers to be carbonized. The cellulose fibers were hydrolyzed to form the printing. Therefore, the ,wastewater, contained a large amount of refractory organic pollutants, ,with COD, levels at approximately ,10000, mg/L, ammonia nitrogen between 400

JP2015071155A - Wastewater treatment method and production ...
JP2015071155A - Wastewater treatment method and production ...

PROBLEM TO BE SOLVED: To provide a wastewater treatment method and a production method of terephthalic acid in which transmembrane pressure difference of …

Wastewater Treatment in Textile Tanneries and ...
Wastewater Treatment in Textile Tanneries and ...

Wastewater, Treatment in Textile, Tanneries and ... ,acid, rain, animal waste have negative influence ,over, biotic and abiotic components on different natural eco-systems. In ... ,COD,, mg/l, day 250 200-2400 400-650 ,10000,-20000 TDS 2100 2100-7700 1060-1080 ,10000,-13000

Correlation between Biochemical Oxygen Demand and Chemical ...
Correlation between Biochemical Oxygen Demand and Chemical ...

(BOD) and the ,chemical oxygen demand, (,COD,). 5 is a measure of how much dissolved oxygen is consumed BOD by aerobic bacteria in 5 days at 20oC. It is the broad measure of the strength of the organic matter in a waste stream. The typical range of BOD 5 in domestic ,wastewater, ranges from 100 to 300 mg/L. ,COD, is ,chemical oxygen demand

A NEW WATER TREATMENT AGENT PREPARED from a “WASTE ACID …
A NEW WATER TREATMENT AGENT PREPARED from a “WASTE ACID …

with HACH DR1010 ,COD, Rapid Detector (USA, HACH) . All tests were performed in three runs. The results represented the averages of the tests. Influence of dosage. Dosage ranged between 0.5 and 3 mmol/L for the simulated dyeing ,wastewater, and between 2 and 4.5 …

Dairy Industry Wastewater Sources Characteristics & its ...
Dairy Industry Wastewater Sources Characteristics & its ...

chemical oxygen demand, (,COD,). Dairy wastes are white in colour and usually slightly alkaline in nature and become acidic quite rapidly due to the fermentation of milk sugar to lactic ,acid,. The suspended matter content of milk waste is considerable mainly due to fine curd found in cheese waste.

A NEW WATER TREATMENT AGENT PREPARED from a “WASTE ACID …
A NEW WATER TREATMENT AGENT PREPARED from a “WASTE ACID …

with HACH DR1010 ,COD, Rapid Detector (USA, HACH) . All tests were performed in three runs. The results represented the averages of the tests. Influence of dosage. Dosage ranged between 0.5 and 3 mmol/L for the simulated dyeing ,wastewater, and between 2 and 4.5 mmol/L for the sewage (as Ti or Al amount in water samples).

EFFLUENT GENERATION BY THE DAIRY INDUSTRY: PREVENTIVE ...
EFFLUENT GENERATION BY THE DAIRY INDUSTRY: PREVENTIVE ...

COD, is not considered critical (Table 1), but high the effluent value on day 13 shows a clear effect on the raw ,wastewater,, which is attributed to the formulated UHT chocolate milk (a brown color in the sample) production wastes. For the dry products, the average ,COD, value was about 2091 mg L-1. The increase in raw ,wastewater COD, on the tenth

Water Analysis Handbook - SCP SCIENCE
Water Analysis Handbook - SCP SCIENCE

The determination of ,Chemical Oxygen Demand, (,COD,) is widely used in municipal and industrial laboratories to measure the overall level of organic contamination in ,wastewater,. The contamination level is determined by measuring the equivalent amount of oxygen required to oxidize organic matter in the sample. ,COD, differs from BOD in that

final repport - mla.com.au
final repport - mla.com.au

Of the seven sampling locations, six were found to have a maximum ,COD, content between ,10000,-20000 mg/L with only the effluent from the cattle holding yards having a lower ,COD, content, with a maximum of 2580 mg/L. The waste streams with a maximum ,COD, content of more than 20000 mg/L were the ‘alley’, ‘manhole’ and ‘render’.

A Lower-cost Approach to Treating Low-volume Refinery ...
A Lower-cost Approach to Treating Low-volume Refinery ...

have very high ,chemical oxygen demand, (,COD,) values. The typical constituents contained in spent caustic that contribute to the high ,COD, are presented in Table 2. Sulfidic spent caustic typically has a ,COD, from ,10,000, mg/L to 60,000 mg/L. Organic spent caustic ,COD, can range from 50,000 mg/L to 250,000 mg/L, or even higher.

Treating refinery spent caustic with electro-oxidation ...
Treating refinery spent caustic with electro-oxidation ...

For example, sulfidic spent caustic generally has a ,COD, from ,10,000, to 60,000 mg/L. Organic spent caustic ,COD, can range from 50,000 to 250,000 mg/L or higher. While spent caustic generated at refineries is generally produced in small quantities (from 0.25 to 10 3 /hr), the kilogram ,COD, load is often much higher than the rest of a water treatment facility’s waste streams combined.

Water Analysis Handbook - SCP SCIENCE
Water Analysis Handbook - SCP SCIENCE

The determination of ,Chemical Oxygen Demand, (,COD,) is widely used in municipal and industrial laboratories to measure the overall level of organic contamination in ,wastewater,. The contamination level is determined by measuring the equivalent amount of oxygen required to oxidize organic matter in the sample. ,COD, differs from BOD in that

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