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Oil Field Application

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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Oil Field Application
physical chemistry - Reducing pH of wastewater from pH 11 ...
physical chemistry - Reducing pH of wastewater from pH 11 ...

$\begingroup$ Be aware that the volume of the needed ,acid, depends not only on the initial ,pH,, but also on the nature of chemicals causing this ,pH,, Particalarly, water with ,pH,=11 caused by NaOH needs significantly less ,acid, then water with ,pH,=11 caused by Na2CO3, as you need more of Na2CO3 than of NaOH to cause the same ,pH,. So I advice to determine the needed ,waste water, / ,acid, ratio in small ...

(PDF) Chemical aspects of peracetic acid based wastewater ...
(PDF) Chemical aspects of peracetic acid based wastewater ...

ABSTRACT. Peracetic ,acid, (PAA) has been studied for ,wastewater, disinfection applications for some 30 years and has been shown to be. an e ective disinfectant against many indicator microbes ...

Analysis Method for pH and Alkalinity | Water Resources ...
Analysis Method for pH and Alkalinity | Water Resources ...

with the digital titrator and sulfuric ,acid, cartridge to ,pH, 4.5; record titrant used to this point as A. Continue the titration to ,pH, 4.2. Record the titrant used to this point as B. If the initial ,pH, is less than 4.5, record the initial ,pH value,. Titrate until the ,pH, is 0.3 units below the …

Is it possible that pH of wastewater can reach 8.5 even 9 ...
Is it possible that pH of wastewater can reach 8.5 even 9 ...

1. The ,wastewater, contains high concentrations of urea or proteins together with some organic acids like VFAs. In the reactor the acids are converted to methane and CO 2 losing their ,acid, effect ...

PH Explained: Understanding pH in Your Drinking Water ...
PH Explained: Understanding pH in Your Drinking Water ...

Injection systems can treat water with a ,pH, as low as four. 3. ,Acid, Injection. The ,acid, injection method treats water with a high ,pH, by lowering its ,pH value, to around seven. The ,acid, injection method eliminates the water’s soda taste and can improve chlorination effectiveness.

pH of Water - Environmental Measurement Systems
pH of Water - Environmental Measurement Systems

This creates H2CO3 in the raindrops, lowering the rain’s ,pH value, ¹⁷. A ,pH, level of 5.65, though acidic, is not considered ,acid, rain. Natural, unpolluted rain or snow is expected to have ,pH, levels near 5.6, assuming a standard atmospheric CO2 concentration of 0.0355% ¹⁵. ,Acid, rain requires a ,pH, below 5.0 ²¹.

2016 Wastewater Guidelines - bsi-sport.de
2016 Wastewater Guidelines - bsi-sport.de

wastewater, discharge parameters such as ,pH,, BOD $, COD, etc, as noted in Table 1, ... ortho esters of phthalic ,acid, 11 | Polycyclic Aromatic Hydrocarbons (PAHs) ... reporting water and ,wastewater, test results for the ,value, chain of ZDHC contributors.

pH - Wikipedia
pH - Wikipedia

In chemistry, ,pH, is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have lower ,pH, values than basic or alkaline solutions. The ,pH, scale is logarithmic and inversely indicates the concentration of hydrogen ions in the solution. This is because the formula used to calculate ,pH, approximates the negative of the base 10 logarithm of the molar concentration of hydrogen ions in the solution. More precisely, ,pH, …

Study of Physico-Chemical Characteristics of Wastewater in ...
Study of Physico-Chemical Characteristics of Wastewater in ...

Generally, the ,wastewater, collected at the monitored sites is slightly alkaline. The ,pH, varies between 6.8 and 8.3—average ,value, 7.82—thus the ,pH, values are within the accepted range for Danube River according to the Romanian law [], which is between 6.5 and 9.0.The ,pH, variation is relatively similar at collectors S1–S4 (domestic and/or mixed domestic-industrial contribution).

physical chemistry - Reducing pH of wastewater from pH 11 ...
physical chemistry - Reducing pH of wastewater from pH 11 ...

$\begingroup$ Be aware that the volume of the needed ,acid, depends not only on the initial ,pH,, but also on the nature of chemicals causing this ,pH,, Particalarly, water with ,pH,=11 caused by NaOH needs significantly less ,acid, then water with ,pH,=11 caused by Na2CO3, as you need more of Na2CO3 than of NaOH to cause the same ,pH,. So I advice to determine the needed ,waste water, / ,acid, ratio in small ...

Study of Physico-Chemical Characteristics of Wastewater in ...
Study of Physico-Chemical Characteristics of Wastewater in ...

Generally, the ,wastewater, collected at the monitored sites is slightly alkaline. The ,pH, varies between 6.8 and 8.3—average ,value, 7.82—thus the ,pH, values are within the accepted range for Danube River according to the Romanian law [], which is between 6.5 and 9.0.The ,pH, variation is relatively similar at collectors S1–S4 (domestic and/or mixed domestic-industrial contribution).

pH in Drinking-water - WHO
pH in Drinking-water - WHO

The ,pH, of water is a measure of the ,acid,–base equilibrium and, in most natural ... It is not considered to be necessary to propose a health-based guideline ,value, for ,pH,. 6. REFERENCES APHA (1989) Standard methods for the examination of water and ,wastewater,, 17th ed. Washington, DC, American ,Public Health, Association.

The Chemistry of Industrial Wastewater Treatment - Tanker ...
The Chemistry of Industrial Wastewater Treatment - Tanker ...

significantly depending on overall ,wastewater, chemistry the target effluent requirements. FIRST REACTION STAGE: The process to modify the oil from emulsified to insoluble free oil state is typically done by ,acid, cracking. ,Acid, cracking is done by lowering the ,pH, to between 2.5 and 4. When the ,pH, is lowered, the molecules of detergent and oil

2016 Wastewater Guidelines - bsi-sport.de
2016 Wastewater Guidelines - bsi-sport.de

wastewater, discharge parameters such as ,pH,, BOD $, COD, etc, as noted in Table 1, ... ortho esters of phthalic ,acid, 11 | Polycyclic Aromatic Hydrocarbons (PAHs) ... reporting water and ,wastewater, test results for the ,value, chain of ZDHC contributors.

Simultaneous removal of acidity and lead from acid lead ...
Simultaneous removal of acidity and lead from acid lead ...

Wastewater from acid lead battery manufacturing or recycling industries contains mainly H 2SO 4 at a pH of 1.2 - 3 and soluble Pb2+ ions at a concentration of 5 - 15 mg L-1. Neutralization with alkaline substances, such as sodium hydroxide, sodium carbonate, lime or dolomite can adjust pH in the appropriate range (5.5 – 9.).

Resource utilization of pickling wastewater (waste acid)
Resource utilization of pickling wastewater (waste acid)

Taking the treatment of waste ,acid, containing iron as an example, although the regeneration and recovery ,of acid, are realized, the utilization ,value of acid, pickling iron oxide produced is not high. Spray roasting is widely used in the regeneration process of waste ,acid, in large iron and steel works, but it is not suitable for the treatment ,of acid, pickling ,wastewater, (waste ,acid,).

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