Welcome to the company ! we have many years of professional experience !
rsdgj@pyzyrsd.com +86 513525609655

self drilling screw patta

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.

Certificate of Honor

Get in touch with us

We will confidentially process your data and will not pass it on to a third party.

self drilling screw patta
Methods for removal of chromium - SlideShare
Methods for removal of chromium - SlideShare

Generally membranes made up of polyamide are used for the ,treatment, of ,chromium containing, effluent. The reverse osmosis technique has been successfully used in the ,treatment, of electroplating rinse waters, not only to meet effluent discharge standards, but also to recover concentrated metal salt solutions for reuse. Its main demerits are high priced equipment and/or expensive monitoring ...

Reduction of Hexavalent Chromium by H2O2 in Acidic ...
Reduction of Hexavalent Chromium by H2O2 in Acidic ...

The rates of Cr(VI) reduction are ,acid,-catalyzed, and the kinetic order z varies from about 1.8−0.5 with ... Integration of ion exchange and electrodeionization as a new approach for the continuous ,treatment of hexavalent chromium wastewater,. Separation and ... Synthesis of ,chromium containing, pigments from ,chromium, galvanic ...

The Electrochemical Treatment of Toxic Hexavalent Chromium ...
The Electrochemical Treatment of Toxic Hexavalent Chromium ...

The effect of these parameters on cell voltage and energy consumption has been also studied. It was found that the efficiency of the reduction method is directly proportional to the ,hexavalent chromium, and sulphuric ,acid, concentration. Trivalent ,chromium, is successfully obtained from acidic industrial ,wastewater containing, 1.5 g l-1 Cr6+.

Biosorption of Hexavalent Chromium from Aqueous Medium ...
Biosorption of Hexavalent Chromium from Aqueous Medium ...

3/4/2014, · The biosorption of ,hexavalent chromium, from aqueous solutions by Opuntia cladodes ... soluble, or insoluble forms. Biosorption is gaining prominence as ,wastewater treatment, ... A similar composition has been reported for ectodermis of cactus pear fruits ,containing, sugars such as galacturonic ,acid, and rhamnose and features ...

How to treat electroplating wastewater - Screen Factory
How to treat electroplating wastewater - Screen Factory

Treatment, of ,chromium containing wastewater,. There are two basic routes for the ,treatment, of ,hexavalent chromium wastewater,: – The ,hexavalent chromium, is reduced to trivalent ,chromium, with low toxicity, and then removed by chemical precipitation, including chemical reduction, electrolytic reduction and agglomeration, etc.

Case study: How to purify Hexavalent Chrome Wastewater
Case study: How to purify Hexavalent Chrome Wastewater

Article Case study: How to purify ,Hexavalent, Chrome ,Wastewater,. We all talk about priority pollutants, about hazardous substances and discharge to the atmosphere etc. which are dangerous for our environmental. Day by day we adopt new laws and regulat...

Industrial acid mine drainage and municipal wastewater co ...
Industrial acid mine drainage and municipal wastewater co ...

11/5/2020, · The chemical composition of the GR material was Al, Ca, Fe, K, Si, Ti, O, and C, as determined by taking into account the chemical composition of the electro,des, and chemical composition of the precipitates from, anode, and cat,hode, electrodes.

(PDF) Photocatalytic treatment of industrial wastewater ...
(PDF) Photocatalytic treatment of industrial wastewater ...

When citric ,acid, was added into the reduction system, the possibility of electron capture by ,chromium, was promoted because hole was scavenged by additive and photo catalytic reduction rate of ,chromium, was subsequently increased for TiO 2 /citric ,acid,/ UV. 17 The possibility is that the initial oxidation of the organic additives by the photo generated holes in TiO 2 (or by the •OH radicals ...

CHROMIUM REMOVAL FROM TANNERY WASTEWATER …
CHROMIUM REMOVAL FROM TANNERY WASTEWATER …

chromium, removal efficiency was examined investigating various parameters: applied voltage, time, and current density. In thebatch experiment, 500 mL ,chromium,-,containing wastewater, was used for electrocoagulation. ,Chromium, content in the raw ,wastewater, was 340.1 mg/L and after ,treatment, at optimized conditions, ,chromium, content was 6.9 mg/L.

Textile Dyeing Wastewater Treatment - IntechOpen
Textile Dyeing Wastewater Treatment - IntechOpen

wastewater, is about 10 mg/L. There are two main sources of ,hexavalent chromium,. Cylinder engraving makes the ,wastewater contai ning hexavalent chromium,. However, this technology has not been used. Another possible source is the use of potassium dichroma te additive in hair dyeing process. Aniline main ly comes from the dyes. The color of the dye

Case study: How to purify Hexavalent Chrome Wastewater
Case study: How to purify Hexavalent Chrome Wastewater

Wastewater, which contains ,chromium, and other heavy metals is classified as high toxic ,wastewater,. For this type of ,wastewater, is required qualitative and effective ,treatment,. There are different ,chromium, removal methods such as chemical precipitation, adsorption and biosorption, reverse osmosis, ion exchange, electrodialysis, photo-catalysis.

C8 Surface treatment with chromium trioxide by touchup ...
C8 Surface treatment with chromium trioxide by touchup ...

treatment, to be performed into the glove box avoid any drops on the floor in the workshop. • ,Wastewater containing hexavalent chromium, should not be discharged to surface or groundwater, but treated to effectively remove ,hexavalent chromium, prior to release to the environment or managed as a …

Biosorption of Hexavalent Chromium from Aqueous Medium ...
Biosorption of Hexavalent Chromium from Aqueous Medium ...

3/4/2014, · The biosorption of ,hexavalent chromium, from aqueous solutions by Opuntia cladodes ... soluble, or insoluble forms. Biosorption is gaining prominence as ,wastewater treatment, ... A similar composition has been reported for ectodermis of cactus pear fruits ,containing, sugars such as galacturonic ,acid, and rhamnose and features ...

C8 Surface treatment with chromium trioxide by touchup ...
C8 Surface treatment with chromium trioxide by touchup ...

treatment, to be performed into the glove box avoid any drops on the floor in the workshop. • ,Wastewater containing hexavalent chromium, should not be discharged to surface or groundwater, but treated to effectively remove ,hexavalent chromium, prior to release to the environment or managed as a …

Effectiveness of Thermal and Acid Modification on ...
Effectiveness of Thermal and Acid Modification on ...

Effectiveness of Thermal and ,Acid, Modification on ,Hexavalent Chromium, Removal by Electrolyte Water ,Treatment, Residuals Xin Ren1, Chongwei Cui1,2,*, ... Rapid industrialization has led to an increased discharged ,wastewater containing, heavy metals, ... by drinking water ,treatment, plants, leading to research into the recycling of E-WTRs.

Treatment of hexavalent chromium-containing electroplating ...
Treatment of hexavalent chromium-containing electroplating ...

Hexavalent chromium,-,containing, electroplating ,wastewater, was treated by barium salt precipitation. The effects of pH pre-adjustment of ,wastewater,, cyanide decomposition method, and addition of Cr(VI) precipitator on the removal of ,hexavalent chromium,, total ,chromium,, copper, and nickel were studied. The influence of the dosage of sulfuric ,acid, on the recovery of ,hexavalent chromium, was examined.

Chat Online Inquiry Email

Business cooperation

+86 513525609655

Company address

Road West, North Branch, Jingkai Road, Puyang City