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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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acidic gas field fracturing flow-back fluids recycling near me craigslist
Waste Material Adsorbents for Zinc Removal from Wastewater ...
Waste Material Adsorbents for Zinc Removal from Wastewater ...

This review examines a variety of ,adsorbents, and discusses mechanisms, modification methods, recovery and regeneration, and commercial applications. A summary of available researches has been composed by a wide range of potentially low-cost modified ,adsorbents, including activated carbon, natural source ,adsorbents, (clay, bentonite, zeolite, etc.), biosorbents (black gram husk, sugar-beet …

Using Sludge Fermentation Liquid To Improve Wastewater ...
Using Sludge Fermentation Liquid To Improve Wastewater ...

Wastewater, biological nutrient removal (BNR) by ,short-cut nitrification-denitrification, (SCND) ,and denitrifying phosphorus removal via nitrite, (DPRN) has several advantages, such as organic carbon source saving. In this paper, a new method, i.e., by using waste activated sludge alkaline fermentation liquid as BNR carbon source, for simultaneously improving SCND and DPRN was reported. First ...

WasteWater technology IndustrIal WashIng
WasteWater technology IndustrIal WashIng

The washing water will contain particula- te, emulsified and dissolved substances in the form of dirt, paint residues, oils, grease and heavy metals, as well as residues from cleaning agents. Using acidic and, alkaline, cleaning agents or corrosives in turn produces acidic or alkaline wastewater.

Lead dioxide | PbO2 - PubChem
Lead dioxide | PbO2 - PubChem

Low lime systems used 20 ppm as Fe of Fe2(SO4)3 and 260 ppm of ,CaO, @ pH= 10.0. High lime system used 600 ppm of ,CaO, @ pH= 11.5. Chemical coagulation was followed by multimedia filtration). /Inorganic lead cmpd/

Frontiers | A Review of Phosphorus Removal Technologies ...
Frontiers | A Review of Phosphorus Removal Technologies ...

The removal of phosphorus (P) from ,domestic wastewater, is primarily to reduce the potential for eutrophication in receiving waters, and is mandated and common in many countries. However, most P-removal technologies have been developed for use at larger ,wastewater, treatment plants that have economies-of-scale, rigorous monitoring, and in-house operating expertise.

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 …

Method for removing metals from acid mine drainage ...
Method for removing metals from acid mine drainage ...

The step of ,adding, the lignin derivatives in the ,wastewater, can be carried out either before or after the step of ,adding, the alkali coagulant. An alkaline composition, such as caustic soda, soda ash, or additional lime, is then dispersed in this mixture to increase the pH, preferably to a pH in the range of 9-10 and more preferably 9.3-9.6.

Technologies for Recovering Nutrients from Wastewater: A ...
Technologies for Recovering Nutrients from Wastewater: A ...

9/5/2019, · Conventional ,wastewater, treatment plants generally remove nutrients from ,wastewater, as phosphate-rich sludge and convert nitrogen-containing compounds ,into, nitrogen gas by nitrification–denitrification, to control eutrophication (De-Bashan and Bashan, 2004).

Artificial Photosynthesis - an overview | ScienceDirect Topics
Artificial Photosynthesis - an overview | ScienceDirect Topics

Artificial photosynthesis, is a process that mimics a very famous biochemical reaction: natural photosynthesis. The ,artificial photosynthesis, system includes an enzyme bed reactor to fix CO 2 in the air (or any other source needing CO 2 to be removed). This reactor is fueled by hydrogen energy and bioelectric transducers.

Removal of pharmaceuticals and personal care products ...
Removal of pharmaceuticals and personal care products ...

1/11/2016, · Briefly, PPCPs can enter the surface water via directly discharging ,into, the surface water by industries, hospitals, households and ,wastewater, treatment plants and through land runoff in case of biosolids spread on agricultural land, which can reach the groundwater by leaching or bank filtration.

Transfer behavior of odorous pollutants in wastewater ...
Transfer behavior of odorous pollutants in wastewater ...

Chemical conditioning has been used for enhancing ,wastewater, sludge dewaterability for many ... humic ,acid, and nucleic ,acid,, ... Then Fe 2 S 3 transformed ,into, FeS. With addition of lime (,CaO,), ...

Alkaline Wastewater - an overview | ScienceDirect Topics
Alkaline Wastewater - an overview | ScienceDirect Topics

Wash water from continuous dyeing,, alkaline, wastewater, and batch dye wastewater contains dye, salts, acids, and other toxic additives. The amount of wastewater generated in the sizing and desizing operations followed by bleaching, dyeing, and printing is high …

Dual Electrodes Oxidation of Dye Wastewater with Gas ...
Dual Electrodes Oxidation of Dye Wastewater with Gas ...

The high energy cost of an electrochemical method is the fatal drawback that hinders its large scale application in ,wastewater, treatment. In traditional single-chamber electrolysis cell, only direct oxidation at an anode exists. Although a small amount of hydrogen peroxide is produced at the cathode by reduction, it is transferred to the anode and destroyed there without ,adding, much benefit to ...

Brief Analysis of the Main Treatment Methods of Phosphoric ...
Brief Analysis of the Main Treatment Methods of Phosphoric ...

The larger the equilibrium constant is, the more stable the precipitate is, the better the precipitation effect is, the more thorough the dephosphorization is, the better the solid-liquid separation effect is, and the treatment of phosphorus-containing ,wastewater, is up to the standard, P < 0.5mg/L. ,Adding, lime can improve the pH value of ,wastewater, and remove phosphorus, at the same time, the ...

A review of the applications of ion floatation: wastewater ...
A review of the applications of ion floatation: wastewater ...

Moreover, by ,adding, auxiliary ligands (malic ,acid, and maleic ,acid,), the recovery efficiencies for all metal ions increased and the flotation times decreased to 40, 20 and 40 min for Zn(ii), Mn(ii) and Cu(ii), respectively, when the molar ratio of metal : sodium dodecyl sulphate : auxiliary ligand was 1 : 5 : 5. 40 It is evident that ion flotation has a high removal capacity for various metal ...

Environmental Science & Technology | Vol 55 No 6
Environmental Science & Technology | Vol 55 No 6

Nitrated Polycyclic Aromatic Hydrocarbons and Arachidonic ,Acid, Metabolisms Relevant to Cardiovascular Pathophysiology: Findings from a Panel Study in Healthy Adults. Linchen He, Yan Lin, Drew Day, Yanbo Teng, Xiangtian Wang, Xing Lucy Liu, Erik Yan, Jicheng Gong, Jian Qin, Xiaoli Wang, Jianbang Xiang, Jinhan Mo, Yinping Zhang, and ; Junfeng Jim ...

Removal of Heavy Metal Ions from Water and Wastewaters by ...
Removal of Heavy Metal Ions from Water and Wastewaters by ...

28/9/2020, · Restrictive requirements for maximum concentrations of metals introduced ,into, the environment lead to search for effective methods of their removal. Chemical precipitation using hydroxides or sulfides is one of the most commonly used methods for removing metals from water and ,wastewater,. The process is simple and inexpensive. However, during metal hydroxide precipitation, …

Vietnamese iced coffee - Wikipedia
Vietnamese iced coffee - Wikipedia

Vietnamese iced coffee,, also known as cà phê đá or cafe da (Vietnamese: cà phê đá, literally "ice coffee") is a traditional Vietnamese coffee recipe.. At its simplest, cà phê đá is made using medium to coarse ground dark roast Vietnamese-grown coffee with a small metal Vietnamese drip filter (phin cà phê).After the hot water is added, the drip filter releases drops of hot coffee ...

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