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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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liquid waste removal greenwood
Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...
Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...

The acid pickling ,wastewater, requires neutralization, filtration, sedimentation, and other purification processes to obtain the purified ferrous solution. First, 10 g of iron scraps was added to 500 mL of pickling ,wastewater, to neutralize the residual acid. At the same time, the Fe 3+ in the solution was reduced to Fe 2+.

Industrial wastewater treatment for fertilizer industry- A ...
Industrial wastewater treatment for fertilizer industry- A ...

Wastewater treatment, is a major problem in such complex fertilizer plant from environmental pollution point of view. For example, ,wastewater, is generated from ammonia plant contains ammonia, ,methanol,, and trace metals. ,Treatment, involves condensate steam strippers to remove ammonia and ,methanol, followed by ion exchange.

Wastewater Treatment - JSTOR
Wastewater Treatment - JSTOR

growth requirements and metabolic products of the ,methanol, oxidizing bacterium, Eubacterium limosum, isolated from sheep rumen and ,wastewater, sludge, were identified by Genthner et al.15 Acetate, butyrate, and caproate were pro duced from ,methanol,. Acetate and butyrate were also formed during growth on H2-C02, whereas branched-chain fatty acids

Quantitative analysis of methanol in wastewater by GC-MS ...
Quantitative analysis of methanol in wastewater by GC-MS ...

Article Quantitative analysis ,of methanol, in ,wastewater, by GC-MS with direct injection or headspace SPME sample introduction. Analytical Methods. Abstract: Monitoring ,methanol, (MeOH) concentration in ,wastewater treatment, processes is important becaus...

Wastewater Grease and Fatty Acid Removal Study- Aquafix
Wastewater Grease and Fatty Acid Removal Study- Aquafix

27/11/2018, · Filamentous bacteria can also be responsible for the presence of foam in ,wastewater treatment, processes because of their ability to float on the surface. The objective of this study was to determine the effectiveness of the Qwik ... Once the hexane was removed 2.5 mL of 2.5% sulfuric ,acid, in ,methanol, was added as a derivatizing agent.

Water | April 2019 - Browse Articles - MDPI
Water | April 2019 - Browse Articles - MDPI

Recycling post-hydrothermal liquefaction ,wastewater, (PHWW) may allow the use of nutrients in the aqueous phase that may otherwise go unused. PHWW is an attractive option for use as fertilizer in systems like crop production. However, there are potential contaminants in the PHWW that may inhibit crop growth or pose a food safety risk.

Sewage treatment - Wikipedia
Sewage treatment - Wikipedia

Sewage ,treatment, is the process of removing contaminants from municipal ,wastewater,, containing mainly household sewage plus some industrial ,wastewater,.Physical, chemical, and biological processes are used to remove contaminants and produce treated ,wastewater, (or treated effluent) that is safe enough for release into the environment.A by-product of sewage ,treatment, is a semi-solid waste or ...

Author:
Author: "Song Yudong" - PubAg Search Results

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Waste Management in Biodiesel Production – Farm Energy
Waste Management in Biodiesel Production – Farm Energy

Wastewater,. After ,biodiesel, is made, it is often “washed” with water to remove contaminants, including soap, glycerin, residual ,methanol, and residual catalyst. This can result in as much as one gallon of ,wastewater, per gallon of ,biodiesel, produced. The amount of ,wastewater, can be reduced by adding an ,acid, to the ,biodiesel, to split the soap.

Environmental Pollution | Vol 275 15 April 2021 ...
Environmental Pollution | Vol 275 15 April 2021 ...

Developmental exposures to perfluorooctanesulfonic acid (PFOS) impact embryonic nutrition, pancreatic morphology, and adiposity in the zebrafish, Danio rerio Karilyn E. Sant, Kate Annunziato, Sarah Conlin, Gregory Teicher, ...

Copper and Nickel Recovery from Electroplating Sludge by ...
Copper and Nickel Recovery from Electroplating Sludge by ...

Extracting Cr, Ni and Fe from the sludge of stainless steel acid washing ,wastewater, with ammonia and sulfuric acid was carried out.

Diatoms recovery from wastewater: Overview from an ...
Diatoms recovery from wastewater: Overview from an ...

1/2/2021, · The raw ,wastewater, was filtered twice with a 0.45 μm pore size Whatman filter paper to remove the large suspended solids particles and debris. The ,wastewater, will be autoclaved for sterilization and further used for the cultivation of the microalgae.

Documents & Reports - All Documents | The World Bank
Documents & Reports - All Documents | The World Bank

25/4/2017, · The two riverlets collect the underground water ,from Yudong, and join Yuliang ,River, at Toubao, and then flow into Nanming ,River,. ,Yudong River, is perennial, about 30 km long and 20m wide. ④ Maotiao ,River,. Maotiao ,River, flows through the southwest boundary of Xiuwen County and joins Wujiang ,River, at Sanchahe of Liuguang Township.

WASTEWATER TECHNOLOGY
WASTEWATER TECHNOLOGY

municipal ,wastewater treatment,. The sera product range for ,wastewater treatment, comprises: • Complete dosing units and systems • Preparation and dosing units ... Dosing ,of methanol,, acetic ,acid,, glycol - carbon sources for denitri-fication 3 MOBILE DOSING STATION Dosing of formic or acetic ,acid, to

Methanogenic Anaerobic Digestion of Wastewater - microbewiki
Methanogenic Anaerobic Digestion of Wastewater - microbewiki

14/4/2015, · However, the pH range for optimal function of methane-producing bacteria was found to be very narrow, ranging from 6.7 to 7.4. 17 Because of the greater sensitivity of methanogens to pH, anaerobic ,wastewater treatment, systems operate at a pH between 6.0 to 8.0 in order to maintain high levels of activity in methane-producing microorganisms.

Heterotrophic denitrification by Enterobacter hormaechei ...
Heterotrophic denitrification by Enterobacter hormaechei ...

methanol, and succinate as carbon sources, in a batch culture. Furthermore, determination of the optimal C/N ratio to achieve a high denitrification yield is also considered. 2. Material and Methods 2.1. Microorganisms isolation and culture media The ,wastewater, samples were collected from the anaerobic sludge of the sewage ,treatment, plant of El ...

Fulvic acid: modifier of metal-ion chemistry ...
Fulvic acid: modifier of metal-ion chemistry ...

Youlian Zhou, Yuanbo Zhang, Guanghui Li, ,Yudong, Wu, Tao Jiang. A further study on adsorption interaction of humic acid on natural magnetite, hematite and quartz in iron ore pelletizing process: Effect of the solution pH value. Powder Technology 2015, 271 , 155-166. https://doi.org/10.1016/j.powtec.2014.10.045

A synergic approach for nutrient recovery and biodiesel ...
A synergic approach for nutrient recovery and biodiesel ...

13/12/2019, · The fatty ,acid, methyl ester ... The combination of ,wastewater treatment, and biodiesel production using algal ... DEP and ,methanol, in 1.2:1 (v/v) ratio. The biomass-co-solvent system was ...

Cavitational technology in wastewater treatment process ...
Cavitational technology in wastewater treatment process ...

While ,wastewater, treating from phenol, oxidized another organic impurities. Level of formaldehyde content decreases from 10 g/dm 3 to 50-100 mg/dm 3, ,methanol, – from 6.4 g/dm 3 to 2.3 mg/dm 3, diphenylol propane – from 4.6 g/dm 3 to 150 mg/dm 3. Following conditions are recommended to decline the ,wastewater, phenol level:

Heavy Metal Pollution Characteristics in the Kaili Coal ...
Heavy Metal Pollution Characteristics in the Kaili Coal ...

mum mercury content of 19 mg/kg [6]; acid coal mine ,wastewater, changed over the seasons, and the ,river, ecosystem was also influenced in Hocking ,River, Ba-sin, Ohio, USA [7].

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