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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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gas testing waste water emission treatment centers near
Biochar Adsorption Treatment for Typical Pollutants ...
Biochar Adsorption Treatment for Typical Pollutants ...

9/11/2016, · The results showed that the modified biochar had a strong adsorption capacity to phosphate, and the maximum adsorption capacity was 319.63 mg/g, indicating that the use ,of calcium and magnesium, cations to modify the biochar of corncob can enhance the anion exchange capacity of biochar, thereby enhancing its phosphate adsorption efficiency.

GUIDELINES FOR THE MANAGEMENT OF WASTEWATER AND SOLID ...
GUIDELINES FOR THE MANAGEMENT OF WASTEWATER AND SOLID ...

The ,removal, of soluble constituents (e.g. salts and nutrients) ... pH values below or above 7.0 indicate ,acidic, or alkaline conditions, respectively. ... A measure of the amount of sodium present in the ,wastewater, relative to ,calcium and magnesium,. In effect, SAR represents the quality of a solution ...

Heavy metal removal from wastewater using various ...
Heavy metal removal from wastewater using various ...

Choi et al. modified zeolite by replacing Si(IV)and Al(III) sites in the lattice with exchangeable cations such as sodium, ,magnesium,, potassium, or ,calcium,, leading to a net negative charge. Mg-modified zeolite has certain advantages such as non-toxicity, low cost, abundance (and hence availability) and large pore size of 40–50 nm compared to the non-modified adsorbent.

Wastewater Treatment through Low Cost Adsorption ...
Wastewater Treatment through Low Cost Adsorption ...

7/4/2016, · This chapter addresses the ,wastewater, treatment of mining residues through adsorption methodologies. It preferentially focuses its attention on (but not limited to) the ,removal, of heavy metals. It begins with a brief description of the most used ,wastewater, treatment pathways highlighting both their advantages and disadvantages and focusing on adsorption industrial practice.

Phosphorus Removal from Wastewater: The Potential Use of ...
Phosphorus Removal from Wastewater: The Potential Use of ...

Various sorbing materials, such as metal oxides and hydroxides, carbonates and hydroxides of calcium (Ca) and magnesium (Mg), hydrotalcite, activated carbon, anion exchange resins, industrial solid wastes and organic solid wastes, have been suggested for P removal. Many of these sorbents are expensive and/or may cause some environmental problems.

Removal of Humic Substances from Water by Means of Calcium ...
Removal of Humic Substances from Water by Means of Calcium ...

1-M ,calcium, chloride solution, washed with bidistilled water, and with tuff was eluted with 200 mL of water and 0.01-M Tris buffer finally dried at 60°C in an oven for 2 weeks. The percentage of ex- until reaching a pH value in the eluate coincident with that of the changeable cations in this ,calcium,-ion (Ca2+) -enriched sample was ongoing solution.

Biochar Adsorption Treatment for Typical Pollutants ...
Biochar Adsorption Treatment for Typical Pollutants ...

9/11/2016, · The results showed that the modified biochar had a strong adsorption capacity to phosphate, and the maximum adsorption capacity was 319.63 mg/g, indicating that the use ,of calcium and magnesium, cations to modify the biochar of corncob can enhance the anion exchange capacity of biochar, thereby enhancing its phosphate adsorption efficiency.

Wastewater Treatment through Low Cost Adsorption ...
Wastewater Treatment through Low Cost Adsorption ...

7/4/2016, · This chapter addresses the ,wastewater, treatment of mining residues through adsorption methodologies. It preferentially focuses its attention on (but not limited to) the ,removal, of heavy metals. It begins with a brief description of the most used ,wastewater, treatment pathways highlighting both their advantages and disadvantages and focusing on adsorption industrial practice.

Heavy metal removal from wastewater using various ...
Heavy metal removal from wastewater using various ...

Choi et al. modified zeolite by replacing Si(IV)and Al(III) sites in the lattice with exchangeable cations such as sodium, ,magnesium,, potassium, or ,calcium,, leading to a net negative charge. Mg-modified zeolite has certain advantages such as non-toxicity, low cost, abundance (and hence availability) and large pore size of 40–50 nm compared to the non-modified adsorbent.

GUIDELINES FOR THE MANAGEMENT OF WASTEWATER AND SOLID ...
GUIDELINES FOR THE MANAGEMENT OF WASTEWATER AND SOLID ...

The ,removal, of soluble constituents (e.g. salts and nutrients) ... pH values below or above 7.0 indicate ,acidic, or alkaline conditions, respectively. ... A measure of the amount of sodium present in the ,wastewater, relative to ,calcium and magnesium,. In effect, SAR represents the quality of a solution ...

Nitrification (Ammonia Oxidation) In Wastewater Treatment ...
Nitrification (Ammonia Oxidation) In Wastewater Treatment ...

Under, toxic and/or cold-weather conditions, ... Thus, it can be a problem to maintain ammonia ,removal, if such conditions persist. Introduction The Microbial Populations Nitrification Process ... ,Magnesium, 0.03-12.5 Molybdenum 0.001-1.0 0.1 0.25-3.0 Phosphorus 310

CA2533628C - System and method for treatment of acidic ...
CA2533628C - System and method for treatment of acidic ...

A ,wastewater, treatment system comprising separation unit operations inhibits or promotes the formation and precipitation of species by controlling the pH of ,wastewater, to be treated entering into the separation unit operations. The separation unit operations include first and second reverse osmosis devices.

CA2533628C - System and method for treatment of acidic ...
CA2533628C - System and method for treatment of acidic ...

A ,wastewater, treatment system comprising separation unit operations inhibits or promotes the formation and precipitation of species by controlling the pH of ,wastewater, to be treated entering into the separation unit operations. The separation unit operations include first and second reverse osmosis devices.

Monohydrocalcite in Comparison with Hydrated Amorphous ...
Monohydrocalcite in Comparison with Hydrated Amorphous ...

In a reaction system of a mixed aqueous solution of Ca2+ and Mg2+ ions with CO32– ion, the MHC single phase is precipitated in a very restricted ,condition, of the molar fraction of Mg2+ from 15 to 25% and in the temperature region from 288 to 303 K, which is surrounded by the precipitation conditions of calcite, hydrated ACC, and hydromagnesite.

Nitrification (Ammonia Oxidation) In Wastewater Treatment ...
Nitrification (Ammonia Oxidation) In Wastewater Treatment ...

Under, toxic and/or cold-weather conditions, ... Thus, it can be a problem to maintain ammonia ,removal, if such conditions persist. Introduction The Microbial Populations Nitrification Process ... ,Magnesium, 0.03-12.5 Molybdenum 0.001-1.0 0.1 0.25-3.0 Phosphorus 310

Phosphorus Removal from Wastewater: The Potential Use of ...
Phosphorus Removal from Wastewater: The Potential Use of ...

Various sorbing materials, such as metal oxides and hydroxides, carbonates and hydroxides of calcium (Ca) and magnesium (Mg), hydrotalcite, activated carbon, anion exchange resins, industrial solid wastes and organic solid wastes, have been suggested for P removal. Many of these sorbents are expensive and/or may cause some environmental problems.

Journal of Microbial & Biochemical Technology
Journal of Microbial & Biochemical Technology

performance in ,acidic condition, suggests that salts that are highly soluble in ,acidic condition, and poorly soluble in basic ,condition, are responsible for the deterioration. The analysis of the eluted substances in the immersion solution suggests that these salts contained phosphorus, ,magnesium, and ,calcium, in a high concentration.

Journal of Microbial & Biochemical Technology
Journal of Microbial & Biochemical Technology

performance in ,acidic condition, suggests that salts that are highly soluble in ,acidic condition, and poorly soluble in basic ,condition, are responsible for the deterioration. The analysis of the eluted substances in the immersion solution suggests that these salts contained phosphorus, ,magnesium, and ,calcium, in a high concentration.

Removal of Humic Substances from Water by Means of Calcium ...
Removal of Humic Substances from Water by Means of Calcium ...

1-M ,calcium, chloride solution, washed with bidistilled water, and with tuff was eluted with 200 mL of water and 0.01-M Tris buffer finally dried at 60°C in an oven for 2 weeks. The percentage of ex- until reaching a pH value in the eluate coincident with that of the changeable cations in this ,calcium,-ion (Ca2+) -enriched sample was ongoing solution.

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