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low permeability oilfield oil extraction wastewater reinjection technology

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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low permeability oilfield oil extraction wastewater reinjection technology
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.

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

pH is a measure of the hydrogen ion concentration of the water as ranked on a scale of 1.0 to 14.0. The lower the pH of water, the more acidic it is.

What is pH of Water? Methods of Determining pH of Water
What is pH of Water? Methods of Determining pH of Water

The ,value, of this constant found to be between 10 and 14. H 2 O –> H + + OH – For acids, the ,pH value, is between 1 to 7. Alkaline will have ,pH value, from 7 to 14. Determination of ,pH of Water,. There are two methods involved in the determination of ,pH value, of water. They are: …

Effect of acidity consumption/production on the pH of ...
Effect of acidity consumption/production on the pH of ...

Finally, this theory was successfully applied to the real petrochemical wastewater treatment. The pH of aeration tank was properly maintained when acidified wastewater (pH 3.4) was supplied. PMID: 12146856 [Indexed for MEDLINE] MeSH terms. Acetic Acid/chemistry; Acetic Acid/metabolism* Biodegradation, Environmental; Epichlorohydrin/chemistry

Water quality for agriculture - Home | Food and ...
Water quality for agriculture - Home | Food and ...

pH, is an indicator of the acidity or basicity of a water, but is seldom a problem by itself. The main use of ,pH, in a water analysis is for detecting an abnormal water. The normal ,pH, range for irrigation water is from 6.5 to 8.4. An abnormal ,value, is a warning that the water needs further evaluation.

What is the pH Level of Water? For Tap Pure or Filtered Water
What is the pH Level of Water? For Tap Pure or Filtered Water

The ,acid, injection will treat the ,water, that has a high ,pH, level by lowering the ,pH, of the ,water, to 7. This can eliminate the soda taste and now improve the effectiveness of chlorination. This can reduce the potential of pipe corrosion since ,water, with a ,pH, level above 9 can corrode metals like zinc, copper, brass, iron, and aluminum.

ORP Management in Wastewater as an Indicator of Process ...
ORP Management in Wastewater as an Indicator of Process ...

Within a sewer system, for example, an ORP ,value, less than -100 mV indicates the production of malodors due to sulfide formation and fatty ,acid, production. By adding sodium nitrate (Na 2 NO 3 ) to a manhole, it’s possible to increase the ORP ,value, above -50 …

Acid Mine Drainage - an overview | ScienceDirect Topics
Acid Mine Drainage - an overview | ScienceDirect Topics

Acid Mine Drainage,. ,Acid mine drainage, (AMD) is a major water quality problem as it reduces the ,pH, of water resource, making dissolved metals readily available for uptake by benthic organisms and fish, which becomes a major pathway of their introduction into the human food chain. From: Water Conservation and ,Wastewater, Treatment in BRICS ...

(Orthophosphate) Phosphorus Reactive
(Orthophosphate) Phosphorus Reactive

USEPA1 ,2 PhosVer 3 ® (Ascorbic ,Acid,) Method 3 Method 8048 0.02 to 2.50 mg/L PO43– Powder Pillows or AccuVac ® Ampuls Scope and application: For drinking water, ,wastewater, and seawater. 1 USEPA Accepted for reporting for ,wastewater, analyses. Procedure is equivalent to USEPA and Standard Method 4500-P-E for ,wastewater,.

Industrial Wastewater Treatment | IWA Publishing
Industrial Wastewater Treatment | IWA Publishing

and filtering are high in organics and BOD but low in volume, accounting for about 3% of total ,wastewater, volume but 97% of BOD. Effluent ,pH, averages about 7 for the combined effluent but can fluctuate from 3 to 12 depending on the use of ,acid, and alkaline cleaning agents. Effluent temperatures average about 30°C. Dairy Industry

Hydrochloric Acid Storage Tanks & HCl Specifications
Hydrochloric Acid Storage Tanks & HCl Specifications

Hydrochloric acid, is a monoprotic molecule with an ,acid,-dissociation equilibrium constant (K a) three orders of magnitude greater than sulfuric ,acid,, indicating HCl is both strong and effective as an ,acid,. The K a ,value, for HCl is reported at 1.3 x 10 6 where sulfuric ,acid, is 1.0 x 10 3. HCl is a very strong ,acid, that is corrosive and hazardous.

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 [ 24 ], which is between 6.5 and 9.0.

Complex extraction and stripping of H acid wastewater ...
Complex extraction and stripping of H acid wastewater ...

Through single-factor experiments, the conditions for treating ,acid wastewater, are found out. ,pH value, is 1, Fe and C mass ratio is 3:1, and iron-carbon micro-electrolysis reaction time is 3 h.

TDS and pH — Safe Drinking Water Foundation
TDS and pH — Safe Drinking Water Foundation

23/1/2017, · Surface water typically has a ,pH value, between 6.5 and 8.5 and groundwater tends to have a ,pH, between 6.0 and 8.5. The ,pH, of a water source can vary naturally. Some types of rock and soil, such as limestone, can neutralize ,acid, more effectively than other types of rock and soil, such as granite.

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

We are required to reduce from ,p H, 11 to ,p H, 7 using 33% hydrochloric ,acid, for our project. Here is my calculation to find the volume of ,acid, needed: C 1 V 1 + C 2 V 2 = C 3 ( V 1 + V 2) where C 1 is the initial concentration of ,wastewater,, V 1 is the volume of ,wastewater,, C 2 is the concentration of ,acid,,

pH - Wikipedia
pH - Wikipedia

The simple procedure given above would suggest that it has a pH of 7.3. This is clearly wrong as an acid solution should have a pH of less than 7. Treating the system as a mixture of hydrochloric acid and the amphoteric substance water, a pH of 6.89 results. Weak acids and bases

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

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

The optimum pH will vary in different supplies according to the composition of the water and the nature of the construction materials used in the distribution system, but is often in the range 6.5–9.5.

What Role Does CO2 Wastewater Treatment Play in Industry ...
What Role Does CO2 Wastewater Treatment Play in Industry ...

This value is around 6 on the pH scale. Further, the carbonic acid created as a result of the CO2 injection is much weaker than the sulfuric acid and chlorine used in chemical treatments. This means that the pH of wastewater falls more slowly and is thus easier to control. But not all CO2 wastewater treatment solutions are created equal.

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 ...

The inlet to the tank has been receiving small dosages of sulfuric acid to keep its pH at around 7.2, which is good. But still, the tank remains stuck at 7.9!

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