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Removal of COD from acidic wastewater and alkaline wastewater

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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Removal of COD from acidic wastewater and alkaline wastewater
Chromium removal from industrial wastewater using ...
Chromium removal from industrial wastewater using ...

22/8/2018, · In order to study the possibility of repeated use of Cu-S·PPP-SH, the efficiency of chromium removal was also tested using hexavalent chromium-electroplating ,wastewater, and trivalent chromium-tanning ,wastewater,. 0.5 g Cu-S·PPP-SH was added to a conical flask containing 100mL of electroplating ,wastewater, or tanning ,wastewater, sample and shaken at 25°C for 90 min. Adjust the pH of the ...

Best Demonstrated Available Technology (BDAT) Background ...
Best Demonstrated Available Technology (BDAT) Background ...

When the sole facility known to be producing ,chrome, green pigment was operating, the filtrate, which contains unrecovered particulates of ,chrome, yellow and iron ,blue, pigments , was sent to ,wastewater, treatment for removal of suspended particulates prior to release under NPDES permit. The removed particulates were the K005 waste.

Recovery and reuse of chromium from tannery wastewaters ...
Recovery and reuse of chromium from tannery wastewaters ...

27/8/2004, · Brown seaweed (Turbinaria spp) was pre‐treated with sulfuric ,acid,, calcium chloride and magnesium chloride and tested for its ability to remove chromium from tannery ,wastewater,. Protonated seaweeds gave...

15.1: Precipitation and Dissolution - Chemistry LibreTexts
15.1: Precipitation and Dissolution - Chemistry LibreTexts

Even though AgCl (,K, sp = 1.6 × 10 –10), AgBr (,K, sp = 5.0 × 10 –13), and AgI (,K, sp = 1.5 × 10 –16) are each quite insoluble, we cannot prepare a homogeneous solid mixture of them by adding Ag + to a solution of Cl –, Br –, and I –; essentially all of the AgI will precipitate before any of the other solid halides form because of its smaller value for ,K, sp.

Competitive Adsorption of Dye Species onto Biomass ...
Competitive Adsorption of Dye Species onto Biomass ...

Among these azo dyes, orange II (OII) and ,acid chrome blue K, (ACBK) have wide applications in paper coloring, temporary hair colorant, dying cottons and wools (Hu et al., 2014). They can cause some harmful effects in humans such as eye burns, dysfunction of kidney, cyanosis, convulsions, tachycardia, dyspnea and, irritation to the skin ( Gong et al ., 2013 ; Hu et al ., 2014 ).

Fluoride Removal from Industrial Wastewater
Fluoride Removal from Industrial Wastewater

Fluorides can be removed from industrial wastewater streams, depending on their form using one of many different methods including: Fluoride, reduction via activated alumina, (only effective at very low levels of free fluoride and typically used for drinking water only).

Treatment of acidic wastewater via fluoride ions removal ...
Treatment of acidic wastewater via fluoride ions removal ...

15/11/2020, · A new process for the treatment of phosphoric acid industry wastewater is proposed. The technique comprises the following major steps: (1), selective removal, of, fluoride, ions via reaction/adsorption with SiO 2-containing particles; (2) microfiltration; and (3), flow electrode capacitive deionization, (FC,DI), for, selective, separation of, phosphate, ions.

Fluoride Removal from Industrial Wastewater | Saltworks ...
Fluoride Removal from Industrial Wastewater | Saltworks ...

15/12/2017, · ,Calcium, fluoride, precipitation, and, coagulation, is another option to remove fluoride from industrial, wastewater, to meet, discharge, requirements. This is suited for the much higher fluoride concentrations typically associated with microelectronics industry.

ICMIEE18-287 Efficiency of Tamarindusindica Seed Charcoal ...
ICMIEE18-287 Efficiency of Tamarindusindica Seed Charcoal ...

of ,chrome, liquor [4]. Conventionally,,chrome, tanning ,wastewater, contains 1500-3000 mg/L chromium [5]. Hashem et al. [6] reported that chromium content in the wet ,blue, waste ,chrome, liquor ranges from 2656-5420 mg/L. Balamurugan et al. [7] reported that chromium (III) in …

FLUORIDE WASTEWATER TREATMENT (FWT)
FLUORIDE WASTEWATER TREATMENT (FWT)

The removal of fluoride requires that the, hydrofluoric acid (HF) be converted to calcium fluoride (,CaF,2), which is insoluble. Calcium fluoride is a relatively insoluble salt and therefore the low fluoride discharge limit is obtainable because calcium fluoride solubility in water is very low.

International Journal of Water and Wastewater Treatment ...
International Journal of Water and Wastewater Treatment ...

Optimization of rambutan peel based activated carbon ,preparation, conditions for Remazol Brilliant ,Blue, R removal, Chemical Engineering Journal, 168, 280-285. O.S. Bello, M.A. Ahmad, T.S. Tan (2011).Utilization of cocoa pod husk for the removal of Remazol Black B reactive dye from Aqueous Solutions: Kinetic, equilibrium and thermodynamic studies, Trends in Applied Sciences Research, …

15.1 Precipitation and Dissolution - Chemistry 2e | OpenStax
15.1 Precipitation and Dissolution - Chemistry 2e | OpenStax

Because Q is greater than ,K, sp (Q = 5.4 × × 10 –8 is larger than ,K, sp = 8.9 × × 10 –12), the reverse reaction will proceed, precipitating magnesium hydroxide until the dissolved ion concentrations have been sufficiently lowered, so that Q sp = ,K, sp.

International Journal of Water and Wastewater Treatment ...
International Journal of Water and Wastewater Treatment ...

Optimization of rambutan peel based activated carbon ,preparation, conditions for Remazol Brilliant ,Blue, R removal, Chemical Engineering Journal, 168, 280-285. O.S. Bello, M.A. Ahmad, T.S. Tan (2011).Utilization of cocoa pod husk for the removal of Remazol Black B reactive dye from Aqueous Solutions: Kinetic, equilibrium and thermodynamic studies, Trends in Applied Sciences Research, 6(8), …

2.9.1 Precipitation and Dissolution - Chemistry LibreTexts
2.9.1 Precipitation and Dissolution - Chemistry LibreTexts

Even though AgCl (,K, sp = 1.6 × 10 –10), AgBr (,K, sp = 5.0 × 10 –13), and AgI (,K, sp = 1.5 × 10 –16) are each quite insoluble, we cannot prepare a homogeneous solid mixture of them by adding Ag + to a solution of Cl –, Br –, and I –; essentially all of the AgI will precipitate before any of the other solid halides form because of its smaller value for ,K, sp.

International Journal of Water and Wastewater Treatment ...
International Journal of Water and Wastewater Treatment ...

Preparation, and characterization of interfacial 26ehavior26ed membrane from 3,5-diaminobenzoic ,acid,. Songklanakarin Journal of Science and Technology, 24 (Supplementary), 807-814. A.L. Ahmad, B.S. Ooi and J.P. Choudhury, ,Preparation, and Characterisation of Co-Polyamide Thin Film Composite Membrane from Piperazine and 3,5-Diaminobenzoic ,Acid,, Desalination Journal, 158 (2003) pp 101- 108

(PDF) Removal of toxic chromium from aqueous solution ...
(PDF) Removal of toxic chromium from aqueous solution ...

Pterocladia capillacea, a red marine macroalgae, was tested for its ability to remove toxic hexavalent chromium from aqueous solution. A new activated carbon obtained from P. capillacea via ,acid, dehydration was also investigated as an adsorbent for

ADSORPTION OF REACTIVE DYE USING AGRICULTURAL WASTE - …
ADSORPTION OF REACTIVE DYE USING AGRICULTURAL WASTE - …

sulphuric ,acid, and keeping it in an air oven at 140oC - 170oC for 24 hours. The carbonized material was filtered and washed with water to remove the excess ,acid, and dried at 105 -110oC. The materials were grounded well and sieved to an average diameter of 0.5 mm (20- 50 ASTM) was used for further studies. ,Preparation, of dye solution

Fluoride Removal from Industrial Wastewater and HF ...
Fluoride Removal from Industrial Wastewater and HF ...

Fluoride Removal from Industrial Wastewater Fluorine (F) is, a naturally occurring element found in our air,,, soil,,, and water., Fluorine is among the most reactive elements on the periodic table and is rarely, if ever, found as elemental fluorine in our environment and is more known and observed as a fluoride in many different naturally occurring compounds.

Characterization and Treatment of Real Wastewater from an ...
Characterization and Treatment of Real Wastewater from an ...

23/5/2019, · The objective of this chapter is to study of the heavy metal removal in real ,waste water,. The use of the raw chitin shows itself of big potential for the treatment of the liquid discharges of the studied unity. It showed itself capable to treating heavy metal loads superior to 200 mg/l by presenting percentage removal between 90 and 97%, as in the case of Cu2+.

15.1: Precipitation and Dissolution - Chemistry LibreTexts
15.1: Precipitation and Dissolution - Chemistry LibreTexts

Even though AgCl (,K, sp = 1.6 × 10 –10), AgBr (,K, sp = 5.0 × 10 –13), and AgI (,K, sp = 1.5 × 10 –16) are each quite insoluble, we cannot prepare a homogeneous solid mixture of them by adding Ag + to a solution of Cl –, Br –, and I –; essentially all of the AgI will precipitate before any of the other solid halides form because of its smaller value for ,K, sp.

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