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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Very soft and malleable, easily melted, cast, rolled, and extruded; Density (at mp): 10.65 g/cu cm; Heat capacity (20 °C): 0.031 cal/g/deg C; Resistivity (microohm-cm): 20.65 at 20 °C, 27.02 at 100 °C, 54.76 at 320 °C, 96.74 at 330 °C; Standard electromotive force (aq) Pb/Pb2+: +0.126 v; Coefficient of linear expansion: (0-100 °C) 29X10-6, (20-300 °C) 31.3X10-6, (-183 °C to +14 °C ...
10 EPA Methods 608.1, 608.2, 614, 614.1, 615, 617, 619, 622, 622.1, 627, and 632 are found in Methods for the Determination of Nonconventional Pesticides in Municipal and Industrial ,Wastewater,, EPA 821-R-92-002, April 1992, U.S. EPA. EPA Methods 505, 507, 508, 525.1, 531.1 and 553 are in Methods for the Determination of Nonconventional Pesticides in Municipal and Industrial ,Wastewater,, Volume ...
1/1/2011, · Biosorptoin, Cu and Mn ,ions,, Bacillus Thuringiensis, Bioextraction, ,Acid Mine, Drainage . 1. Introduction Heavy ,metal ions, in ,wastewater, cause serious problems on human health and environment. The main sources of these ,ions, are mining and electroplating. Cu, Mn, Pb, Cr, Zn, Ni, Cd are some metals that these industries discharge into environment.
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 ...
17/2/2014, · ,Sulfate-reducing bacteria, are considered as a possible way to deal with ,acid mine, waters that are produced by other ,bacteria,. SRB are capable of causing severe corrosion of iron material in a water system because they produce enzymes which have the power to accelerate the reduction of sulphate compounds to the corrosive hydrogen sulphide, thus SRB act as a catalyst in the reduction …
esting and profound phenomenon where insoluble stearic ,acid, on the surface of a solution can adsorb ,metal ions, dissolved in the solution. It was not until 1959 that Sebba2 suggested using this phenomenon as a means of concentrating ,ions, from solu-tion, even very dilute solution, by a otation method. This process is called ion otation.3
Efficiency of ZVI is hindered by the presence of higher concentration of total dissolved solids. PHA can treat AMD that is mild acidic in nature. Besides, long retention time is required for the removal of heavy metals and sulfur with organic waste and ,sulfate reducing bacteria, (SRB).
A certified water-testing laboratory should do this test. These ,bacteria, are generally only a concern if the water will be used for animal drinking water or for swimming. It is recommended that ponds used for swimming contain less than 200 fecal coliform ,bacteria, per 100 mL of water and less than 150 E. coli ,bacteria, per 100 mL of water.
Sulfate reducing bacteria, (SRB) are either heterotrophic or authotrophic anaerobic ,bacteria,, capable of ,reducing sulfate, to sulfide when provided with a suitable carbon source by a dissimulator, bioenergetic metabolism (Postgate, 1984). Substrate (electron donor) oxidation is coupled to ,sulfate, (terminal electron acceptor) reduction.
Insights into the Occurrence, Fate, and Impacts of Halogenated Flame Retardants in Municipal ,Wastewater Treatment, Plants. Guofang Xu, Xuejie Zhao, Siyan Zhao, Chen Chen, Matthew J. Rogers, Rajaganesan Ramaswamy, and ; Jianzhong He*
:, Acid mine drainage, (AMD) is a serious environmental problem resulting from the weathering of usually contains high, concentration, of, metals, such as iron, manganese, suitability of vermiculture in a continuous flow, for removal of, copper, (II), ions, from, acid mine drainage, effluents. A-stage vermifilter was designed and to remove copper (II), ions.
1/3/2011, · The possibility of using SRB for the ,treatment, of an ,acid mine, drainage was also studied (Alvarez et al., 2007). However, there are potential dangers in the use of sulfide precipitation process. As we know, heavy metal ions often in ,acid, conditions and sulfide precipitants in acidic conditions can result in the evolution of toxic H 2 S fumes.
Bioremediation for ,Acid Mine, Drainage: Organic Solid Waste as Carbon Sources For ,Sulfate,-,Reducing Bacteria,: A Review 568 site to site due to the presence of different minerals (Government, 2007). Pollution control of AMD is achievable by preventing AMD formation, migration and/or
11/10/2006, · The main objective of this study was to remove and recover ,metal ions, from ,acid mine, drainage (AMD) by using lignite, a low cost sorbent. Lignite has been characterized and used for the AMD treatment. Sorption of ferrous, ferric, manganese, zinc and calcium in multi-component aqueous systems was investigated.
project was to determine if ,sulfate reducing bacteria, can be used inside the ,mine, itself such that the leachate is not toxic. Prior research has shown that bacterial metabolism can be of significant use in the removal of metals from ,wastewater, (Dvorak et al. 1992). ,Sulfate reducing bacteria, oxidize
The sustainable removal of heavy metals from ,acid mine, drainage (AMD) and ,wastewater, has become a major challenge to scientists (Hossain et al., 2012), ... copper and manganese ,metal ions, were studied to investigate the effects of controlling ... 4.1.5 Effects of initial ,concentration, ...
Brine ,treatment, is commonly encountered when treating cooling tower blowdown, produced water from steam assisted gravity drainage (SAGD), produced water from natural gas extraction such as coal seam gas, frac flowback water, ,acid mine, or ,acid, rock drainage, reverse osmosis reject, chlor-alkali ,wastewater,, pulp and paper mill effluent, and waste streams from food and beverage processing.
The potentiometric titration can be useful to study the pretreatment process of biomass (L. minor) using the acidic and alkali agents, the Qmax and KL values to remove Hg(II), Cr(III), Cr(VI), and Cu(II) from the aqueous solution by the activated L. minor at the alkali solution and by CaCl 2 /MgCl 2 /NaCl with 1 : 1 : 1 molar ratio were higher than those for the reference one at the same ...
main method. The basic principle is to input neutralizer into ,acid wastewater,, to make heavy ,metal ions, and hydroxyl ,ions, react, generate precipitation of hydroxide dissolution difficulty in water, and, finally, make water to purify ,wastewater, meets emission standard. When we use the method to deal with ,wastewater,, we should know the
24/3/1989, · Water pollutants come not only from urban and municipal ,wastewater, discharges, but also from nonpoint sources, some of which are not perceived as such. Most of the nonpoint sources have been initially recognized as such by groundwater experts (Foster et al., 2003) who realized that soil (urban or rural) was an important means of transporting pollution to ground and surface water through ...