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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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Sodium Hydrosulphite - an overview | ScienceDirect Topics
Sodium Hydrosulphite - an overview | ScienceDirect Topics

R.B. Chavan, in Handbook of Textile and Industrial ,Dyeing,, 2011 16.5.1 Vat dyes. Vat dyes are applied by using ,sodium hydrosulphite, (sodium dithionate) as reducing agent and sodium hydroxide as an alkali. Some by-products of ,sodium hydrosulphite, are ,acidic, in nature, necessitating overdosing of sodium hydroxide over stoichiometric requirement. A few of the by-products formed are sulphur ...

Textile Wastewater Treatment: A Critical Review
Textile Wastewater Treatment: A Critical Review

discharge huge amounts of highly colored wastewater as the uptake of these dyes by fabrics is very poor. This highly colored textile wastewater severely affects photosynthetic function in plant but also has an adverse effect on aquatic life due to low light penetration and oxygen consumption. It may also be lethal

Decolorization of dyeing wastewater and characterization ...
Decolorization of dyeing wastewater and characterization ...

Dyeing wastewater, from the textile printing and ,dyeing, industry can cause aesthetical problems and impede light penetration, which greatly upsets biological processes in surface water (Rajkumar & Kim 2006; Santhy & Selvapathy 2006; Gul & Silah 2014).In addition, due to its high color and large amount of chemical oxygen demand, ,dyeing wastewater, is considered as a considerable source …

Mordants and Natural Dyeing The Great Debate | Alpenglow Yarn
Mordants and Natural Dyeing The Great Debate | Alpenglow Yarn

11/11/2014, · As a brief aside, if anyone reads info out there that says vinegar or citric acid is a mordant, don’t trust the source as someone who understands science – these substances modify the pH, lowering it to make the solution more ,acidic, (protein fibres like ,acidic, conditions, and acid dyes are called acid dyes because to dye protein fibres, they require ,acidic, conditions, the dyes …

US20130256218A1 - Printing and dyeing wastewater treatment …
US20130256218A1 - Printing and dyeing wastewater treatment …

A ,printing and dyeing wastewater treatment and reuse apparatus, includes a coarse filter, a regulation pool, a hydraulic sieve, a desulfurization pool, a nanocatalytic electrolyzer, a flocculation pool, a flocculation tank, a settling pool, a flotation device, a biochemical pool, a secondary settling pool, a secondary nanocatalytic electrolyzer, a fine filter, a compressor, a nanomembrane …

Synthetic Dye - an overview | ScienceDirect Topics
Synthetic Dye - an overview | ScienceDirect Topics

Dye wastewater, is considered to be one of the most harmful effluents, ... The adsorption results were found to be favorable at ,acidic, pH. ... Furthermore, ,dyeing, with synthetics dyes and chemicals could lead to environmental pollution.

Industrial wastewater treatment - Wikipedia
Industrial wastewater treatment - Wikipedia

Industrial wastewater treatment, describes the processes used for treating ,wastewater, that is produced by industries as an undesirable by-product. After treatment, the treated industrial ,wastewater, (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment.. Most industries produce some ,wastewater,.Recent trends have been to minimize such production or ...

(PDF) Ozonation of Textile Dyeing Wastewater - A Review
(PDF) Ozonation of Textile Dyeing Wastewater - A Review

The ozonation of synthetic ,wastewater, containing azo dye Acid Red 14 (AR 14) was investigated in a high-throughput microporous tube-in-tube microchannel reactor.

Decolorization of Dyeing Wastewater Using Polymeric ...
Decolorization of Dyeing Wastewater Using Polymeric ...

29/2/2012, · The ,wastewater, produced by a reactive ,dyeing, contains [2,3]: (i) hydrolyzed reactive dyes not fixed on the substrate, representing 20-30% of the reactive dyes applied (on average 2 g/L) (this residual amount is responsible for the coloration of the effluents and cannot be recycled); (ii) ,dyeing, auxiliaries or organic substances, which are non-recyclable and responsible for the …

Removal of Dyes from Textile Industrial Wastewater using ...
Removal of Dyes from Textile Industrial Wastewater using ...

Wastewater, containing dyes is very difficult to treat, since the dyes are recalcitrant organic molecules, resistant to aerobic digestion, ... Tai-Lee Hu (1996) stated that adsorption of reactive dyes by bacterial cells is significant particularly under ,acidic, conditions. Mohan, S.V.and Karthikeyan, J., ...

PE04 - MBBR Bio Media - MBBR Bio Media for RAS Fish ...
PE04 - MBBR Bio Media - MBBR Bio Media for RAS Fish ...

PE04 - MBBR Bio Media for RAS Fish Farming Water Treatment by Tong Xiang Small Boss Special Plastic Products Co., Ltd.. Small Boss MBBR filter media is a novel biologically active carrier, it adopts scientific formula, depending on the nature of wate...

Treatment Technologies for Organic Wastewater | IntechOpen
Treatment Technologies for Organic Wastewater | IntechOpen

17/11/2011, · In ,acidic, conditions, ... printing and ,dyeing wastewater,, mechanical manufacturing industry, and agriculture . This kind of ,wastewater, is reluctant to biodegradation either owed to its toxicity or stable structure, therefore, their disposal usually costs higher than degradable ones. ...

Ozonation of Textile Dyeing Wastewater — A Review
Ozonation of Textile Dyeing Wastewater — A Review

1 to 20 % of dyes are released along the ,wastewater, which contribute to the colour [33]. It is observed that ,wastewater, from many textile units are …

Textile dyeing industry an environmental hazard
Textile dyeing industry an environmental hazard

Nevertheless even the natural dyes are rarely low-impact, due to certain mordants that have to be used with them. Mordants, are substances, (such as chromium), used to “fix” color onto the fabric. They may be are very toxic and may have a high impact on the ,wastewater, quality. Natural dyestuffs require large quantities of water for ,dyeing,.

14 Industrial Wastewater Treatment Principals and Ideas
14 Industrial Wastewater Treatment Principals and Ideas

For example, the dye factory discharges both ,acidic wastewater, and alkaline ,wastewater,. Due to the difference in fabrics and dyes, the pollutants and pollution effects of textile printing and ,dyeing wastewater, will be very different. Even the ,wastewater, discharged from a set of production unit may contain several pollutants at the same time.

Difference of Non-Hazardous Vs Hazardous Waste | ERC of USA
Difference of Non-Hazardous Vs Hazardous Waste | ERC of USA

Corrosivity: Corrosive hazardous wastes include ,acidic, liquid wastes with a pH of two or less and basic liquid wastes that have a pH of 12.5 or more and can corrode steel. Reactivity: Reactive hazardous wastes include wastes that are unstable under standard conditions, react with water, give off toxic fumes or have the capability to explode or detonate when they are heated.

Efficient Removal of Dye from Wastewater without ...
Efficient Removal of Dye from Wastewater without ...

16/4/2021, · Adsorption techniques have been successfully applied in water purification because of their flexibility, simplicity of design, and effectiveness. Activated carbon is an effective absorbent using for dye adsorption; however, the powder structure is not conducive for practical applications and cannot be used to filter dye solutions which are challenges that still need to be addressed. Herein, a ...

List of Residual Waste Beneficial Use General Permits
List of Residual Waste Beneficial Use General Permits

A person or municipality shall not conduct activities in accordance with the terms and conditions of any of the residual waste ,beneficial use, general permits listed below unless an application for coverage has been approved, in writing, by the Department.

Poultry keratin based decolorants for dyeing wastewater ...
Poultry keratin based decolorants for dyeing wastewater ...

acidic dyeing wastewater,. In contrast, the results for MKA were completely different, with the optimum performance obtained in the neutral to alkaline range (pH from 6 to 12), indicating that MKA was suitable for treating neutral or alkaline ,wastewater,. When the pH was lower than the isoelectric point of KA, its amine groups were protonized to

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