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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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Biological Treatment of Tannery Wastewater - A Review
Biological Treatment of Tannery Wastewater - A Review

The ,wastewater,, produced after the oxidation of sulfide compounds coming from the beam house section of a ,tannery,, contained average COD and ammonium concentrations of 550 and 90 mg L -1, respectively. Goltara et al. (2003) used a Membrane Sequencing Batch Reactor (MSBR) to treat this ,wastewater,.

TANWATER – REDUCTION OF NITROGEN DISCHARGE FROM THE ...
TANWATER – REDUCTION OF NITROGEN DISCHARGE FROM THE ...

The removal of nitrogen from effluents by nitrification/denitrification is used by some municipal, wastewater, treatment plants in Europe (easier to treat than, wastewater, from, tanneries)., In the first biological process (nitrification) the, ammonia nitrogen, is oxidised into nitrate.

Chemical Engineering Journal Journal Impact IF 2020-2021 ...
Chemical Engineering Journal Journal Impact IF 2020-2021 ...

An ,acid,-resistant magnetic Nb-substituted crystalline silicotitanate for selective separation of strontium and/or cesium ions from ... Fenton oxidation and chromium recovery ,from tannery wastewater, by means of iron-based coated biomass as heterogeneous catalyst in fixed-bed ... (SBBR) for enhancing ,nitrogen, removal of real domestic ,wastewater,:

Characteristics of wastes from Tannery industries. - Envibrary
Characteristics of wastes from Tannery industries. - Envibrary

The final composite, tannery, effluents (wastewater) contain a high load of organic matter, dissolved and suspended solids, organic nitrogen, and ammonia, and possess high pH. pH values The pH values of the effluents at various leather manufacturing stages ranged from 3.8 to 12.5 depending on the strength and amounts of the reagents used.

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