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Mineral Water Production Line

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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Mineral Water Production Line
Environmental Guidelines for Copper Smelting
Environmental Guidelines for Copper Smelting

generate ,acid, vapors while fire-refining processes result in ,copper, and sulfur dioxide emissions. Emissions of arsine, hydrogen vapors and ,acid, mists are associated with electrorefining. ,Wastewater, from primary ,copper, production contains dissolved and suspended solids that may include: concentrations of ,copper,, lead, cadmium, zinc, arsenic and

Removal of Dyes from Wastewater Using Flyash a Low-Cost ...
Removal of Dyes from Wastewater Using Flyash a Low-Cost ...

The prepared adsorbent was characterized and used for the removal of dyes from ,wastewater,. Adsorption studies were carried out for different temperatures, particle sizes, ,pH,'s, and adsorbent doses. The adsorption of each ,dye, was found to increase with increasing temperature, thereby indicating that the process is endothermic in nature.

(PDF) Treatment of Acid Orange 74 Wastewater and Sugar ...
(PDF) Treatment of Acid Orange 74 Wastewater and Sugar ...

The effectiveness of (OP) in adsorbing;C.I. Direct Red 79 (DR 79) and C.I. Direct Yellow 27 (DY 27) from their ,dye, baths has been studied as a function of ,pH,, solid/liquid ratio, agitation time ...

Reclamation of acid dye bath wastewater: Effect of pH on ...
Reclamation of acid dye bath wastewater: Effect of pH on ...

15/9/2006, · The acid dye bath wastewaters contain acid dyes (CIBA Tectilon), auxiliary chemicals, namely an antifoaming agent and a levelling agent, and, acetic acid, for lowering the pH. Nine samples were collected at three different times from the beck-dyeing stream of a carpet manufacturing plant and two composite mixtures were prepared from the first eight samples in order to compensate for the …

Removal of Dyes from Wastewater Using Flyash a Low-Cost ...
Removal of Dyes from Wastewater Using Flyash a Low-Cost ...

The prepared adsorbent was characterized and used for the ,removal of dyes from wastewater,. Adsorption studies were carried out for different temperatures, particle sizes, ,pH,'s, and adsorbent doses. The adsorption of each ,dye, was found to increase with increasing temperature, thereby indicating that the process is endothermic in nature.

Frontiers | Degradation of Azo Dye (Acid Orange 7) in a ...
Frontiers | Degradation of Azo Dye (Acid Orange 7) in a ...

The ,pH, of the anode solution was adjusted to 7. ,pH, and ionic strength were measured using a calibrated benchtop combined ,pH, and ionic strength meter (,pH,/CON 700 meter, Cole-Parmer, UK). The concentration ,of Acid, orange 7 ,dye, used was 100 mg L −1. Three MFC systems were setup.

(PDF) Treatment of Acid Orange 74 Wastewater and Sugar ...
(PDF) Treatment of Acid Orange 74 Wastewater and Sugar ...

The effectiveness of (OP) in adsorbing;C.I. Direct Red 79 (DR 79) and C.I. Direct Yellow 27 (DY 27) from their ,dye, baths has been studied as a function of ,pH,, solid/liquid ratio, agitation time ...

Response surface optimization of acid red 119 dye from ...
Response surface optimization of acid red 119 dye from ...

Results reveal that the optimal conditions for dye removal were initial pH 3.42, coagulant dosage of 4.55 g dried PACS/L and initial dye concentration of 140 mg/L for PACS, while the optimal initial pH, coagulant dosage and initial dye concentration for PAC were 3.8, 57 mg/L and 140 mg/L, respectively.

Response surface optimization of acid red 119 dye from ...
Response surface optimization of acid red 119 dye from ...

Results reveal that the optimal conditions for dye removal were initial, pH 3.42,, coagulant dosage of 4.55 g dried PACS/L and initial dye concentration of 140 mg/L for PACS, while the optimal initial pH, coagulant dosage and initial dye concentration for PAC were 3.8, 57 mg/L and 140 mg/L, respectively.

Research progress of the physical and chemical treatment ...
Research progress of the physical and chemical treatment ...

pH, value is 6, the decolorization of ,dye, increased from 19.6% to 69.5% with the dose of TiO. 2. increasing from 0g/L to 0.7g/L. A mount of studies indicated that TiO. 2. photocatalytic is an efficient method for the degradation of ,dye wastewater,, but there are also some problems. TiO. 2. is difficult to separate

Adsorption of Acid Dyes from Wastewater on Saudi Bentonite ...
Adsorption of Acid Dyes from Wastewater on Saudi Bentonite ...

The formation of positive sites on the clay results from the presence of alumina but the adsorption ,of acid dye, will be ,low, because of the small number of positive sites. Equilibrium study Adsorption equilibrium: The adsorption process reached the equilibrium within 4 h, therefore, the equilibrium experiments were carried at least for 5 h to insure that the equilibrium state was attained.

Hydroxide Precipitation of Metals | Hoffland Environmental ...
Hydroxide Precipitation of Metals | Hoffland Environmental ...

The ,sulfide, solubility chart below demonstrates the solubility of the metal ,sulfide, compounds. ,Copper sulfide,, for example, is a very insoluble compound and the presences of soluble ,sulfide, precipitates the ,copper, as it dissociates from the ammonical complex. Ultimately, the ,copper, is all removed from the complex and precipitated as ,copper sulfide,.

What is Sulfide Mining? | Mining Action Group
What is Sulfide Mining? | Mining Action Group

Metallic ,sulfide, mining (aka hard rock mining) is the practice of extracting metals such as nickel, gold ,and copper, from a ,sulfide,-rich ore body. Sulfides are a geologic byproduct of mining in this area, and by exposing sulfides to the air and water in our atmosphere, sulfuric ,acid, can be created — threatening to poison the nearby water, environment, and communities.

Removal of Textile Dye Acid Green 1 from Wastewater by ...
Removal of Textile Dye Acid Green 1 from Wastewater by ...

It is shown that the AG1 adsorption is at its maximum in the ,pH, 2. In this range of ,acid pH,, the positive charge of the surface of the activated carbon increases, this causes an increase of the electrostatic attraction between the ,dye, and the surface of the adsorbent. The adsorbed amount decreases when the ,pH, increases by 4 to 11.

Removal of Acid Orange 7 dye from aqueous solutions by ...
Removal of Acid Orange 7 dye from aqueous solutions by ...

25/5/2017, · RESULTS: Results showed that efficiency of ,Acid, Orange 7 ,dye, removal is higher in acidic ,pH, and higher adsorbent dosage. The highest efficiency of ,Acid, Orange 7 ,dye, removal was 98.41% by raw tea residue absorbent at ,pH, 2, reaction time was 120 minutes and initial concentration of ,dye, was 50 mg/l, which was obtained at adsorbent dosage of 10 g/l.

Causes of Corrosion and Corrosion Monitoring - Purafil
Causes of Corrosion and Corrosion Monitoring - Purafil

Active sulfur compounds include hydrogen ,sulfide,, elemental sulfur, and organic sulfur compounds such as the mercaptans. When present at low parts per billion levels, they rapidly attack ,copper,, silver, aluminum, and iron alloys. The presence of moisture and small amounts of inorganic chlorine compounds greatly accelerates ,sulfide, corrosion.

Treatment of Combined Acid Black 48 and Coffee Wastewater ...
Treatment of Combined Acid Black 48 and Coffee Wastewater ...

2013). Discharge of ,dye wastewater, from industries can pollute surface water streams. If the ,dye waste-water, is not treated properly before releasing to the environment, the effluent from these industries can cause determental effect onquality of receiving wa-ters in terms of ,pH,, total suspended solids (TSS), total

Treatment of Combined Acid Black 48 and Coffee Wastewater ...
Treatment of Combined Acid Black 48 and Coffee Wastewater ...

2013). Discharge of ,dye wastewater, from industries can pollute surface water streams. If the ,dye waste-water, is not treated properly before releasing to the environment, the effluent from these industries can cause determental effect onquality of receiving wa-ters in terms of ,pH,, total suspended solids (TSS), total

Printing - Standard Methods for the Examination of Water ...
Printing - Standard Methods for the Examination of Water ...

30/6/1986, · a. Total ,sulfide, includes dissolved H2S and HS–, as well as ,acid,-soluble metallic sulfides present in suspended matter. The S2– is negligible, amounting to less than 0.5% of the dissolved ,sulfide, at pH 12, less than 0.05% at pH 11, etc. ,Copper, and silver sulfides are so

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