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Neutralization of lime residue from acid wastewater by lime in sulfuric acid production

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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Neutralization of lime residue from acid wastewater by lime in sulfuric acid production
Removal of Microbeads from Wastewater Using ...
Removal of Microbeads from Wastewater Using ...

The need for better microplastic removal from ,wastewater, streams is clear, to prevent potential harm the microplastic may cause to the marine life. This paper aims to investigate the efficacy of ,electrocoagulation, (EC), a well-known and established process, in the unexplored context of microplastic removal from ,wastewater, streams. This premise was investigated using artificial ,wastewater, ...

Dye Manufacturing - IFC
Dye Manufacturing - IFC

• Mordant or chrome dyes: metallic salt or ,lake, formed directly on the fiber by the use of alu-minum, ,chromium,, or iron salts that cause precipitation in situ • ,Lake, or pigment dyes: form insoluble compounds with aluminum, barium, or ,chromium, on mo-lybdenum salts; the precipitates are ground to form pigments used in paint and inks

IJERPH | Free Full-Text | Chromium Monitoring in Water by ...
IJERPH | Free Full-Text | Chromium Monitoring in Water by ...

Chromium, contamination of drinking water has become a global problem due to its extensive use in industry. The most commonly used methods for ,chromium, detection in water are laboratory-based methods, such as atomic absorption spectroscopy and mass spectroscopy. Although these methods are highly selective and sensitive, they require expensive maintenance and highly trained staff.

Highly selective and sensitive probes for the detection of ...
Highly selective and sensitive probes for the detection of ...

Due to its large-scale applications in metallurgy, chemical engineering, steel making and many other areas, ,chromium, is extensively discharged from the industries; this poses a severe threat to the environment and human health. 1–3 Compared with trivalent ,chromium,, which is an essential nutrient for humans, hexavalent ,chromium, is a lethal toxicant to human beings. 4–6 According to the rules of the …

Wastewater Laboratory Procedures And Chemistry
Wastewater Laboratory Procedures And Chemistry

Not all odors in ,wastewater, are from H2S, and there is no correlation between H2S and other odors. The total H2S procedure is good up to 18 mg/1, and higher concentrations must be diluted before testing. H2S ,production, can be controlled by up-sewer aeration which reduces US formation and also stabilizes the ,wastewater, in the collection svstem. 14-104

Wastewater Analysis and Study of Soil Microorganisms of ...
Wastewater Analysis and Study of Soil Microorganisms of ...

Sources of industrial ,wastewater,:Iron and steel industry:The ,production, of iron from its ores involves powerful reduction reactions in blast furnaces.Contamination of waste streams includes gasification products suchas benzene, naphthalene, anthracene, cyanide, ammonia, phenols, cresols together with arange of more complex organic compounds known collectively as polycyclic aromatichydrocarbons ...

IJERPH | Free Full-Text | Chromium Pollution in European ...
IJERPH | Free Full-Text | Chromium Pollution in European ...

These include mining and metal works, steel and metal alloys ,production,, paint manufacturing, wood and paper processing, dyeing, and raising the ,chromium, content in ,wastewater, [14,15,16]. In addition, the fall out of ashes produced by the incineration of coal or municipal waste for energy generation and the ,production, of second-generation fertilizers contribute to the elevated Cr (VI) content ...

Textile effluent treatment - SlideShare
Textile effluent treatment - SlideShare

Anthraquinone dyes of the solvent or disperse class ,containing, one or more primary amino- or methyl amino- groups tend to be mutagenic or carcinogenic. Cations bind to sulfhydryl (-SH) group (cysteine amino ,acid,) in enzymes disrupting the vital metabolic reaction catalyzed by the enzyme. The high alkalinity and traces of ,chromium, (employed in dyes) adversely affect the aquatic life. Imidazole ...

Recent advances in textile wastewater treatment using ...
Recent advances in textile wastewater treatment using ...

The textile wastewaters (TWWs) are one of the major sources of environmental pollution, due to the presence of various recalcitrant dyes. It is estimated that about 300,000 t of synthetic dyes are discharged in TWWs every year worldwide. Thus, untreated or incompletely treated TWWs cause harm to aquatic and terrestrial life. To avoid the negative impacts associated to the discharge of TWWs ...

Removal of Microbeads from Wastewater Using ...
Removal of Microbeads from Wastewater Using ...

The need for better microplastic removal from ,wastewater, streams is clear, to prevent potential harm the microplastic may cause to the marine life. This paper aims to investigate the efficacy of ,electrocoagulation, (EC), a well-known and established process, in the unexplored context of microplastic removal from ,wastewater, streams. This premise was investigated using artificial ,wastewater, ...

IJERPH | Free Full-Text | Chromium Monitoring in Water by ...
IJERPH | Free Full-Text | Chromium Monitoring in Water by ...

Chromium, contamination of drinking water has become a global problem due to its extensive use in industry. The most commonly used methods for ,chromium, detection in water are laboratory-based methods, such as atomic absorption spectroscopy and mass spectroscopy. Although these methods are highly selective and sensitive, they require expensive maintenance and highly trained staff.

Recent advances in textile wastewater treatment using ...
Recent advances in textile wastewater treatment using ...

The textile wastewaters (TWWs) are one of the major sources of environmental pollution, due to the presence of various recalcitrant dyes. It is estimated that about 300,000 t of synthetic dyes are discharged in TWWs every year worldwide. Thus, untreated or incompletely treated TWWs cause harm to aquatic and terrestrial life. To avoid the negative impacts associated to the discharge of TWWs ...

Chromium accumulation and toxicity in aquatic vascular ...
Chromium accumulation and toxicity in aquatic vascular ...

1/7/2004, · ,Chromium, oxalate complexes, a probable form of ,chromium,, in plants is considered a nutritionally available source of ,chromium, in food crops (Cary et al., 1997). Aquatic vascular macrophytes in tropical areas constitute the largest single form of biomass in freshwater ecosystems.

ICEPR 2011 Proceedings - List of Papers - Avestia
ICEPR 2011 Proceedings - List of Papers - Avestia

Wastewater, Management and Treatment. Treatment of ,Chromium, (VI) ,Containing, Aqueous Effluent of Tanneries and Electroplating Units by Membrane Process; Biological Treatment of Salinity ,Wastewater, by Aspergillus Flavus: Based on Biosorption Batch Process Operation

Impacts of aquaculture wastewater irrigation on soil ...
Impacts of aquaculture wastewater irrigation on soil ...

Bahmanyar, M. Cadmium, nickel, ,chromium,, and lead levels in soils and vegetables under long-term irrigation with industrial ,wastewater,. Commun. Soil Sci. Plant 39 , 2068–2079 (2008).

Impacts of aquaculture wastewater irrigation on soil ...
Impacts of aquaculture wastewater irrigation on soil ...

Bahmanyar, M. Cadmium, nickel, ,chromium,, and lead levels in soils and vegetables under long-term irrigation with industrial ,wastewater,. Commun. Soil Sci. Plant 39 , 2068–2079 (2008).

ICEPR 2011 Proceedings - List of Papers - Avestia
ICEPR 2011 Proceedings - List of Papers - Avestia

Wastewater, Management and Treatment. Treatment of ,Chromium, (VI) ,Containing, Aqueous Effluent of Tanneries and Electroplating Units by Membrane Process; Biological Treatment of Salinity ,Wastewater, by Aspergillus Flavus: Based on Biosorption Batch Process Operation

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