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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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acidic gas field fracturing flow-back fluids recycled materials
What chemicals are used and controlled in primary ...
What chemicals are used and controlled in primary ...

A pH or 7.0 is neutral and pH below 7.0 is, acidic, and pH above 7.0 is basic or alkaline. Modifying the ionic charge of wastewater changes the solubility of certain solids and also allows for physical solids to attract to each other. Selecting chemicals to adjust wastewater pH requires considering the chemical makeup of …

Dephosphorisation of Acidic Wastewater
Dephosphorisation of Acidic Wastewater

contain many different elements such as chromium, titanium, ,nickel,, zirconium and molybdenum [3]. The combined ,wastewater, from all pickling processes will therefore contain a wide range of elements, in this study the focus is phosphorus (P). In order to release the ,wastewater, into the environment, its ,acidic, content needs to be neutralized.

Methods of Removing Heavy Metals from Industrial Wastewater
Methods of Removing Heavy Metals from Industrial Wastewater

wastewater, containing heavy metals is to precipitate the heavy metals in a weak ,acidic, or neutralized catholyte as hydroxides. Electrochemical treatments of ,wastewater, involve electro-deposition, electro-coagulation, electro-flotation and electro-oxidation [26]. Electrodestabilization of colloids is called

Wastewater Treatment during PCB Fabrication Process | PSPCB
Wastewater Treatment during PCB Fabrication Process | PSPCB

Why Pay Attention to Treat The ,Wastewater, Produced by PCB Fabrication Process. PCB fabrication process is a very complex and highly integrated technology, during which a large amount of ,wastewater, is produced.The ,wastewater, has a complex composition, contains a variety of heavy metals ions, metal complexes, organic polymer compounds, and various organic additives.

Nitrification (Ammonia Oxidation) In Wastewater Treatment ...
Nitrification (Ammonia Oxidation) In Wastewater Treatment ...

Nickel, Note that while copper, ... Lower pH’s (,acidic, conditions) are particularly adverse. Maintaining excess dissolved oxygen in the aeration zone at all times. ... present in the untreated ,wastewater, and where separation of side streams is more feasible.

Treating Acidic Wastewater (pH Adjustment) for Evaporation ...
Treating Acidic Wastewater (pH Adjustment) for Evaporation ...

Many common wastewaters are considered, acidic. Acidic, is defined as having a pH of less than 7. The pH scale measures how, acidic, or alkaline (basic) a substance is. The scale is logarithmic and each pH value below 7 is ten times more, acidic, than the next level.

Research progress in effective and affordable treatment of ...
Research progress in effective and affordable treatment of ...

Acid mine drainage occurs when water in large disused mines reacts with metals in the rock to form ,acidic, solutions. It contains high concentrations of iron, manganese, aluminium and sulphate in addition to traces of lead, copper, ,nickel,, zinc, magnesium, calcium, potassium and sodium.

Acid mine drainage - Wikipedia
Acid mine drainage - Wikipedia

Acid mine drainage,, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of ,acidic, water from metal mines or coal mines.. Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually within rocks ...

Alkaline Wastewater - an overview | ScienceDirect Topics
Alkaline Wastewater - an overview | ScienceDirect Topics

Wash water from continuous dyeing,, alkaline, wastewater, and batch dye wastewater contains dye, salts, acids, and other toxic additives. The amount of wastewater generated in the sizing and desizing operations followed by bleaching, dyeing, and printing is high …

Industrial wastewater treatment - Wikipedia
Industrial wastewater treatment - Wikipedia

Industrial wastewater treatment, describes the processes used for treating ,wastewater, that is produced by industries as an undesirable by-product. After treatment, the treated industrial ,wastewater, (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment.. Most industries produce some ,wastewater,.Recent trends have been to minimize such production or ...

Steel and Manufacturing - Water and Wastewater Treatment ...
Steel and Manufacturing - Water and Wastewater Treatment ...

Non-degradable organic pollutants are emulsified in the discharged ,wastewater,. These contaminants are introduced by rolling, coating, annealing, pre-pickling, and alkaline cleaning of the steel. Differing steel varieties may also contribute zinc, ,nickel,, copper, tin, chromium, and iron.

Removal of copper nickel and tin from model and real ...
Removal of copper nickel and tin from model and real ...

as copper, ,nickel, and tin are present in raw industrial ,wastewater, ... compounds, precipitation already occurs in ,acidic, medium – above pH 4.3, the concentration of Sn(II), ... ,wastewater, is increased in some cases by the use of Fe(III) ions. In this case, ...

Methods of Removing Heavy Metals from Industrial Wastewater
Methods of Removing Heavy Metals from Industrial Wastewater

wastewater, containing heavy metals is to precipitate the heavy metals in a weak ,acidic, or neutralized catholyte as hydroxides. Electrochemical treatments of ,wastewater, involve electro-deposition, electro-coagulation, electro-flotation and electro-oxidation [26]. Electrodestabilization of colloids is called

Acid mine drainage - Wikipedia
Acid mine drainage - Wikipedia

Acid mine drainage,, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of ,acidic, water from metal mines or coal mines.. Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually within rocks ...

Nitrification & Denitrification
Nitrification & Denitrification

When the pH of the ,wastewater, is ,acidic, or neutral, the majority of the nitrogen is ammonium (NH 4 +). When the pH increases over 8.0, the nitrogen is mostly ammonia (NH 3). A municipal ,wastewater, treatment plant with an effluent containing more than 2 or 3 mg/L NH 3 is not fully nitrifying. organic-Nitrogen (org-N).

Handling pH control of Industrial Wastewater - Clean India ...
Handling pH control of Industrial Wastewater - Clean India ...

Jorge Edgardo López Hernández: There’s no point in using more than six hours HRT, particularly in cases where the wastewater coming from the soft drink facilities is going to be anaerobically treated. The reason is that in many cases this results in excessive acidification and higher acid, alkaline, reagents consumption due to AGVs neutralisation.

Properties of Cobalt- and Nickel-Doped Zif-8 Framework ...
Properties of Cobalt- and Nickel-Doped Zif-8 Framework ...

Properties of Cobalt- and ,Nickel,-Doped Zif-8 Framework Materials and Their Application in Heavy-Metal Removal from ,Wastewater, ... which suggests that ZIF is a promising candidate for ,wastewater, treatment [22]. Huang et al. ... ,acidic, environment, Cr (VI) reacts with diphenylcarbazide to form a …

Industrial waste water treatment - SlideShare
Industrial waste water treatment - SlideShare

15/3/2017, · Chemical Treatment 1 Neutralization ,Industrial, wastes often contain ,acidic or alkaline, components which require neutralization before discharge or treatment. For wastes that are discharged to receiving waters, a pH between 6 and 9 is frequently specified by regulatory agencies.

pH In Wastewater Treatment Alkalinity In Wastewater Treatment
pH In Wastewater Treatment Alkalinity In Wastewater Treatment

In municipal and industrial wastewater there are many factors which contribute to, alkalinity., Factors which contribute to, alkalinity, include the type of dissolved inorganic and organic compounds present in the water, the amount of suspended organic matter in the water, and the amount of …

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