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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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Pump-and-treat Air Sparging Solvent Vapor Extraction ...
Pump-and-treat Air Sparging Solvent Vapor Extraction ...

pumping, (capture zone) shape and extent of the area influenced by ,pumping, in the general groundwater flow relates to: - aquifer transmisivity T (m2/s) - hydraulic gradient i (-) - ,pumping, intensity Q (m3/s) x y ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ =± Q Tiy x y 2π tan shape and extent of the ,influence, stagnation with of the zone point Ti Q x 2π = Ti Q w= well

Influence of pumping pressure on the viscosity curve and ...
Influence of pumping pressure on the viscosity curve and ...

Cement pastes with water-to-cement ratios ranging from 0.35 to 0.6 were tested according to a protocol designed to simulate the conditions of an actual ,pumping process, based on field tests (i.e ...

Role of coagulation in the kinetics of sedimentation ...
Role of coagulation in the kinetics of sedimentation ...

Colloidal ,Pumping,: Evidence for the ,Coagulation Process, Using Natural Colloids Tagged with 203Hg. Environmental Science & Technology 1996, 30 (11) , 3335-3340. DOI: 10.1021/es9601806. Bowen Lv, Chao Wang, Jun Hou, Peifang Wang, Lingzhan Miao, Baoshan Xing.

Role of coagulation in the kinetics of sedimentation ...
Role of coagulation in the kinetics of sedimentation ...

Colloidal ,Pumping,: Evidence for the ,Coagulation Process, Using Natural Colloids Tagged with 203Hg. Environmental Science & Technology 1996, 30 (11) , 3335-3340. DOI: 10.1021/es9601806. Bowen Lv, Chao Wang, Jun Hou, Peifang Wang, Lingzhan Miao, Baoshan Xing.

Water Treatment Fundamentals - Verified Group Educational ...
Water Treatment Fundamentals - Verified Group Educational ...

2.a. Slow ,sand, filters 2.b. Rapid ,sand, filters 2.c. High rate filters 2.d. Filter media selection for gravity filters 3. Direction of Flow 3.a. Downflow 3.b. Upflow B. Filter Operation 1. Effluent-Controlled Constant-Rate Submerged Inlet Constant Level Filter 2.

Biological pump - Wikipedia
Biological pump - Wikipedia

The ,biological pump, can be divided into three distinct phases, the first of which is the production of fixed carbon by planktonic phototrophs in the euphotic (sunlit) surface region of the ocean. In these surface waters, phytoplankton use carbon dioxide (CO 2), nitrogen (N), phosphorus (P), and other trace elements (barium, iron, zinc, etc.) during photosynthesis to make carbohydrates, lipids ...

The Effect on Activated Sludge of Chemical Coagulants ...
The Effect on Activated Sludge of Chemical Coagulants ...

5.4% in 10 ppm. Backwash wastewater from sand filter after adding coagulants has no direct inhibition effect on mi- croorganism, but it results in inorganic components increase in active sludge. By taking North STP as an example, the VSS/SS ratio reduced from 0.65 after coagulants application to 0.54.

Analysis of carbon emission hot spot and pumping energy ...
Analysis of carbon emission hot spot and pumping energy ...

There is 95% of carbon emissions generated by ,pumping, from the intake and distribution stages, and the use of ,pumping, is responsible for 65% of total carbon emissions in the clarification stage. The power consumption per pump lift can be calculated to evaluate the difference between rated power and operational power.

(PDF) Review of Coagulation’s Rapid Mixing for NOM Removal ...
(PDF) Review of Coagulation’s Rapid Mixing for NOM Removal ...

Kawamura (2000) recommended that the flow-rate ,ratio, should be in the range of 4-10% in order to guarantee uniform coagulant dispersion in PDM. Recently, the PDM has been introduced for the rapid and complete dispersion of a coagulant within a second before the metal hydroxide precipitate has formed.

(PDF) Review of Coagulation’s Rapid Mixing for NOM Removal
(PDF) Review of Coagulation’s Rapid Mixing for NOM Removal

It is well reported that enhanced ,coagulation, (EC) by adjusting the pH downwards to 4-5 prior to coagulant addition will encourage the formation of soluble NOM–Al complex from low-turbidity waters.

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