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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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house waste water treatment system
Sci Forschen Water and Wastewater Treatment
Sci Forschen Water and Wastewater Treatment

27/1/2018, · used to remove phosphorus and nitrogen from the wastewater. Five factors were analysed in the experiment; type of adsorbent, dosage, particle size, contact time and rotational speed. The reading of total nitrogen (TN), total phosphorus (TP) and pH were taken at the end of the experiment in order to detect the removal of these nutrients.

Chromium trioxide | CrO3 - PubChem
Chromium trioxide | CrO3 - PubChem

/Chromic ,acid,:/ This important ,acid, is known also as ,chromium trioxide,. The technical grade is obtainable from primary producers in an anhydrous form as small dark red flakes containing 99% CrO3. Like all chromates and dichromates, its chromium is in the hexavalent state.

Biological and Chemical Wastewater Treatment Processes ...
Biological and Chemical Wastewater Treatment Processes ...

2/12/2014, · ,Wastewater,, or sewage, originates from human and home wastewaters, industrial wastes, animal wastes, rain runoff, and groundwater infiltration. Generally, ,wastewater, is the flow of used water from a neighborhood. The ,wastewater, consists of 99.9% water by weight, where the remaining 0.1% is suspended or dissolved material.

Water purification - Wikipedia
Water purification - Wikipedia

Water purification, is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water fit for specific purposes. Most water is purified and disinfected for human consumption (drinking water), but ,water purification, may also be carried out for a variety of other purposes, including medical, pharmacological, chemical ...

(PDF) Wastewater Engineering Treatment 5th Edition ...
(PDF) Wastewater Engineering Treatment 5th Edition ...

Wastewater Engineering Treatment 5th Edition Solutions Manual,, 2009. Roshan Varde. Download PDF

Valorization of ammonia concentrates from treated urban ...
Valorization of ammonia concentrates from treated urban ...

the free ,acid, concentration in the ,stripping, phase (e.g., HNO 3 and H 3 PO 4). A mass transport algorithm to predict the pH of the ,stripping, stream was developed to describe the contactor performance, predict the requirements of the free ,acid, concentration in the ,stripping, phase and …

Acidic Recovery from Wastewater of Automotive Battery ...
Acidic Recovery from Wastewater of Automotive Battery ...

brane (AEM) to recover ,acid, and reject metal ions [11-16]. In this study, we aimed to explore the po- tential of DD-AEM to recover H 2 SO 4 from aci-dic ,wastewater, from an automotive battery production plant, and to determine the opti-mum operating conditions. Experimental 1) Chemicals and ,wastewater

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

----- EPA-600/2-75-038 October 1975 LIME ,USE IN WASTEWATER TREATMENT: DESIGN AND COST, DATA by Denny S. Parker, Emilio de la Fuente, Louis O. Britt, Max L. Spealman, Richard J. Stenquist, and Fred J. Zadick Brown and Caldwell Walnut Creek, California 94596 Contract No. 68-03-0334 Project Officer James E. Smith, Jr. ,Wastewater, Research Division Municipal Environmental Research …

Nitrogen Removal by Ammonia Stripping
Nitrogen Removal by Ammonia Stripping

stripping, column’, a common physical process used in ,wastewater, management to remove excess nitrogen. A back titration will be used to measure both pre- and post-treatment samples’ concentration of ammonium hydroxide. I have been particularly interested in some of the intricacies of ,wastewater, …

DEGRADATION OF 2-HYDROXYBENZOIC ACID BY ADVANCED …
DEGRADATION OF 2-HYDROXYBENZOIC ACID BY ADVANCED …

The degradation of 2-hydroxybenzoic ,acid, was found to follow first-order kinetics and to be influenced by the type of process and the experimental conditions. The experimental results showed that the most favorable conditions for 2-HBA degradation by the Fenton process are pH around 4-5, [Fe2+] = 0.6 mmol.L-1, and [H.

Rapid removal of ammonium from domestic wastewater using ...
Rapid removal of ammonium from domestic wastewater using ...

13/2/2018, · The NH 4-N concentration of the raw ,wastewater, used for this ,experiment, was 50 mg/L. Ammonium chloride was added to increase the NH 4 –N of the ,wastewater, …

Recovery and conversion of acetic acid from a phosphonium ...
Recovery and conversion of acetic acid from a phosphonium ...

IL was purified by stripping with nitrogen 33 for 24 h at a flow rate of 150 mL min −1 at 155 °C to eliminate or minimize the influence of impurities present in commercial IL (≥95%) on the reaction. In a typical experiment, 6.6 g of the purified IL was transferred into a …

Combining Electrocatalysts and Biobased Adsorbents for ...
Combining Electrocatalysts and Biobased Adsorbents for ...

Efficient treatment of domestic and industrial ,wastewater, is one of the major challenges of the 21st century. Among the inorganic pollutants, nitrogen species are significant contaminants and the management of the nitrogen cycle is one the most crucial parts of ,wastewater, purification. Herein, we report an integrated method that minimizes the amount of chemicals used, can be empowered by ...

(PDF) Standard Methods For the Examination of Water and ...
(PDF) Standard Methods For the Examination of Water and ...

Standard Methods For the Examination of Water and Wastewater,, 23nd edition, 2017. Toan Tran. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 32 Full PDFs related to this paper. READ PAPER. ,Standard Methods For the Examination of Water and Wastewater,…

Headspace analysis of malodorous compounds from swine ...
Headspace analysis of malodorous compounds from swine ...

In two sets of experiments, continuous aeration of the ,wastewater, was carried out for 24 h. An addition of sodium azide, a microbial inhibitor, was made in the second ,experiment, in order to explore the impact of microbial activity versus air ,stripping, on the concn of volatile compounds.

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