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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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Revealing the factors influencing a fermentative ...
Revealing the factors influencing a fermentative ...

24/9/2014, · Several organic compounds including lactose, glucose, acetic ,acid,, propionic ,acid,, and furfurol, among others, were identified and monitored during the ,wastewater, degradation experiments. The results allowed direct comparison of the experimental runs by revealing the different degradation rates and metabolic pathways followed by the microbial communities involved.

Neutralization of Wastewater - avs.globecore.com
Neutralization of Wastewater - avs.globecore.com

6/1/2017, · ,Wastewater, containing acids or ,alkali, must be neutralized. Water with ,pH, of 6.5 – 8.5 are considered neutral. Neutralization is required where ,pH, is below 6.5 and above 8.5. Practically, the highest danger is posed by acidic ,wastewater, containing salts of heavy metals. Neutralization is a chemical reaction between two substances, of which one has the properties of an ,acid, and the other …

Coagulation / flocculation process in the removal of trace ...
Coagulation / flocculation process in the removal of trace ...

rates of flow. The amount of ,wastewater, generated daily from the ,factory, was 2.2 x 105 l. Sample Analysis: The raw ,wastewater, was digested with aqua regia (3:1, HNO3:HCl) to release its trace metal contents using standard methods (APHA – AWWA – WEF, 1995), by transferring 100 ml of well-mixed, ,acid, preserved sample to a 250 ml flask.

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

The treatment of this wastewater is to neutralize by the addition of, waste acid, or, acidic wastewater, to, pH, 5, and then, lime is added to precipitate fluoride. The reactions are as follows: (8.12) 2HF + …

Integrated electrocoagulation and membrane filtration for ...
Integrated electrocoagulation and membrane filtration for ...

The integration of EC pretreatment with membrane filtration is an emerging technique for advanced ,wastewater, treatment. 20–22 Zhao et al. obtained high removals of hardness, chemical oxygen demand (COD) and turbidity by adjusting the current density, reaction time, pH and other treatment conditions of an integrated EC-RO treatment during produced water treatment. 20 Pires da Silva et al ...

Acidic Wastewater Treatment - OMEX : OMEX
Acidic Wastewater Treatment - OMEX : OMEX

Traditionally, sodium hydroxide (caustic soda) and calcium hydroxide (lime) have been used to neutralise acidic ,wastewater,. However, these compounds are reactive and can cause high ,pH, levels if not controlled correctly. The Magmex range is the environmentally friendly answer for acidic ,wastewater, treatment.

Chlorinated Methylsiloxanes Generated in the Papermaking ...
Chlorinated Methylsiloxanes Generated in the Papermaking ...

In the coupled papermaking-,wastewater, treatment processes, D3D(CH2Cl), D4D(CH2Cl), and D5D(CH2Cl) were ,detected, in all water (0.113–8.68 μg/L) and solid samples (0.888–26.2 μg/g), with solid–water partition values (468–3982 L/kg) 1.08–4.82 times higher than those of their corresponding nonchlorinated analogs.

Mechanism of adsorption of humic acid by modified aged ...
Mechanism of adsorption of humic acid by modified aged ...

The adsorbed humic ,acid, solution was filtered, diluted and then ,detected, at 254 nm on the basis of ultraviolet-visible (UV-vis, Puyuan Alpha 1500, Shanghai, China) spectra. The humic ,acid, concentration was reflected by a linear relationship between the concentration of humic ,acid, and its adsorption, as shown in eqn (3). y = 0.0325x, R 2 = 0 ...

Staying Neutral: A Case for Magnesium Hydroxide in Wastewater
Staying Neutral: A Case for Magnesium Hydroxide in Wastewater

Though lime is traditionally used to mitigate these minerals, magnesium hydroxide can treat the ,wastewater,, raising ,pH, and encouraging precipitation of the metals it contains. Contact Garrison Minerals to discuss your unique ,wastewater, treatment requirements or to receive a …

How toxic chemicals from a DuPont plant wound up beneath ...
How toxic chemicals from a DuPont plant wound up beneath ...

14/2/2018, · Pompton Lakes Mayor John Sinsimer desperately needed a Bible. One role of being mayor in the Passaic County town was to preside over marriage …

Refined soybean oil wastewater treatment and its ...
Refined soybean oil wastewater treatment and its ...

1/11/2018, · The release of refined soybean oil ,wastewater, (RSOW) with a high chemical oxygen demand (COD) and oil content burdens the environment. The conversion of RSOW into lipids by oleaginous yeasts may be a good way to turn this waste into usable products. ,The oleaginous yeast Trichosporon fermentans, was used for treating the RSOW without sterilization, dilution, or nutrient supplementation.

Pollutant characteristics from wastewater of poplar pre ...
Pollutant characteristics from wastewater of poplar pre ...

Full Article. Pollutant Characteristics from ,Wastewater, of Poplar Pre-conditioning Refiner Chemical Alkaline Peroxide Mechanical Pulping Pretreated with ,Phanerochaete, chrysosporium Zong-Zheng Yang, a Ya-Nan Guo, a Ai-Lin Liu, b Jie Zhang, b Ming-Yue Wang, b Ying Liu, a Xiao-Le Cao, a Zhi-Guo Wu, a Li-Ya Wu, a Chun-Hu Wang, a and Jing-Guo Cao b, * The compositions of the organic pollutants of ...

pH Neutralization and Industrial Wastewater Treatment ...
pH Neutralization and Industrial Wastewater Treatment ...

The design of any well functioning system must recognize that tank geometry is critical, ,pH, probes do not react quickly and require extensive service, chemical injection must be precise and repeatable, chemicals do not mix quickly and react even slower, controls must address the very non-linear control curves and must accommodate for aging ,pH, probes, deficiencies in chemical injection, and ever changing ,wastewater, …

THE RISK TO GROUNDWATER FROM WASTEWATER IRRIGATION USING ...
THE RISK TO GROUNDWATER FROM WASTEWATER IRRIGATION USING ...

There was concern that ,wastewater, irrigation was the cause of high concentrations of chromium ,detected, in an area of the aquifer. The work described here on the behaviour of chromium formed part of a larger project looking at the impact of ,wastewater, reuse on groundwater quality in León

Wastewater and Sludge | Liquid Lime | The Artesia Companies
Wastewater and Sludge | Liquid Lime | The Artesia Companies

Wastewater, neutralization. ,Wastewater, must be neutralized to adjust its ,pH, value in order to meet the requirements of different processing units within a ,wastewater, treatment system. Neutralization may be used to treat ,acid, wastewaters containing metals. Adding an alkaline reagent increases the ,pH, of the ,acid, …

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