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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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gas air separation plant locations
Melamine-Based Polymeric Crosslinker for Cleaner Leather ...
Melamine-Based Polymeric Crosslinker for Cleaner Leather ...

22/4/2021, · To augment sustainable tanning, less chrome input, high functional quality leather processed via no restricted substance in processing, and ease to treat the inevitable protein waste generated are the key challenge, and currently, they have become the active part of leather research. Our work covers the synthesis of a formaldehyde-free chromium-incorporated polymeric tanning agent (FF-CIPTA ...

My Ideas for Mankind's future - WTN - Your Future
My Ideas for Mankind's future - WTN - Your Future

Employed as an industrial engineer in a leather ,tannery,, in 1971 to 1972. Engaged in work study, time sheet calculations, batch production control, weekly and quarterly production cost reports. Compiled the following reports:

Impact of Ammonia Nitrogen on COD Removal Efficiency in ...
Impact of Ammonia Nitrogen on COD Removal Efficiency in ...

Wastewater, effluent discharges containing excessive nitrogenous compounds causes eutrophication, depletion of dissolved oxygen, posing toxicity to aquatic species and also affecting suitability for reuse of ,wastewater, (Metcalf & Eddy et al. 2003; Falahati et al. 2018).Various regulatory authorities such as CPCB and MoEF have developed the discharge standard limit for ,ammonia nitrogen, in water bodies as 50 …

TREATMENT OF TANNERY WASTEWATER BY PRETREATMENT ...
TREATMENT OF TANNERY WASTEWATER BY PRETREATMENT ...

The ,tannery wastewater, is difficult to treat because of its fluctuant quality and volume,high pollution load capacity and its virulence.This project uses pretreatment-coagulation-anaerobic hydrolysis-cyclic activated sludge technology(C-TECH) process to treat ,tannery wastewater,.It is studied the change rule of C-TECH pond aeration time with COD_ Cr ,NH_3-N and DO.The result indicates that it ...

Analyses of Nitrogen Metabolism Functional Microbial ...
Analyses of Nitrogen Metabolism Functional Microbial ...

improve the efficiency of ,ammonia nitrogen, treatment in ,tannery wastewater,. 11 Due to the low biodegradability, and high concentration of organic matter and ,ammonia nitrogen, in ,tannery wastewater,,12 the hydrolysis acidification and multistage aerobic process (A/O3) were used to treat ,tannery wastewater, in this paper.

(PDF) Sustainable Development for Agriculture and ...
(PDF) Sustainable Development for Agriculture and ...

This book “Sustainable Development for Agriculture and Environment” has been design to provide overall understanding of all aspects related to the study of environment protection for sustainable development. Persistently high levels of hunger and

Tannery wastewater treatment using two-stage anaerobic ...
Tannery wastewater treatment using two-stage anaerobic ...

Tannery wastewater, samples were collected from Modjo ,Tannery,, central Ethiopia using different size plastic bags every seven days for three months (12 days). The samples were collected from three different effluent lines which included the sulfur line; chrome line and general ,wastewater, line and a composite sample was prepared by combining the three stream samples proportional to their …

Finances in Germany - Expat Guide to Germany | Expatica
Finances in Germany - Expat Guide to Germany | Expatica

Learn everything an expat should know about managing ,finances in Germany,, including bank accounts, paying taxes, getting insurance and investing.

Lime Use in Wastewater Treatment: Design and Cost Data
Lime Use in Wastewater Treatment: Design and Cost Data

The efficiency of ,ammonia, air stripping as a result of high lime treatment depends on the pH of the ,wastewater,. The process requires a high pH to achieve efficient removal of ,ammonia,, because this ,nitrogen, compound is very soluble in water and is highly ionized at pH 7.0.

A Comparative Study on Removal Efficiency of Sulphide and ...
A Comparative Study on Removal Efficiency of Sulphide and ...

ammonia nitrogen, after 3 hours of reaction. There was no change in ,ammonia nitrogen, amount after the reactions (Dantas et al., 2003). Mn-Cu/Al 2 O 3 heterogeneous catalytic ozonation process for tertiary treatment depicted that the removal efficiency of COD was 29.3% more as compared to ozonation alone after 60 minutes (Huang et al., 2016).

(PDF) A review on activated carbon: process application ...
(PDF) A review on activated carbon: process application ...

The used of carbon in daily life were back dated in early civilization. [2, 3] mentioned that The origin of activated carbon (AC) is associated with Ancient Egypt (1500 BC), whereby the Egyptians ...

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,:

Anammox - Wikipedia
Anammox - Wikipedia

One is a ,tannery,, the other a potato processing plant. [citation needed] Advantages. Conventional ,nitrogen, removal from ammonium-rich ,wastewater, is accomplished in two separate steps: nitrification, which is mediated by aerobic ,ammonia,- and nitrite-oxidizing bacteria and denitrification carried out by denitrifiers, which reduce nitrate to N

Constructed wetland - Wikipedia
Constructed wetland - Wikipedia

A ,constructed wetland, (CW) is an artificial wetland to treat municipal or industrial ,wastewater,, greywater or stormwater runoff. It may also be designed for land reclamation after mining, or as a mitigation step for natural areas lost to land development.Constructed wetlands are engineered systems that use natural functions vegetation, soil, and organisms to treat ,wastewater,.

Activation of persulfate (PS) and peroxymonosulfate (PMS ...
Activation of persulfate (PS) and peroxymonosulfate (PMS ...

15/2/2018, · Effect of ,wastewater, composition on the activation of PS and PMS. Many anions exist in the ,wastewater,, which can cause different effect on the sulfate and hydroxyl radicals produced due to the activation of PS and PMS. Chloride ion is the major anion in water resources.

Leaching Behaviors of Chromium(III) and Ammonium-Nitrogen ...
Leaching Behaviors of Chromium(III) and Ammonium-Nitrogen ...

Tannery, sludge usually has high content of trivalent chromium (Cr(III)) and ammonium-,nitrogen, (NH4+-N). It is important to make a critical evaluation of the releasing behaviors of Cr(III) and NH4+-N ,from tannery, sludge before its use on improving soil fertility in agricultural applications. For this purpose, static batch and dynamic leaching experiments with different mathematical models were ...

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