Welcome to the company ! we have many years of professional experience !
rsdgj@pyzyrsd.com +86 513525609655

Acid wastewater from neutralization reaction

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.

Certificate of Honor

Get in touch with us

We will confidentially process your data and will not pass it on to a third party.

Acid wastewater from neutralization reaction
Enhancement of Reverse Osmosis Water Recovery Using ...
Enhancement of Reverse Osmosis Water Recovery Using ...

use ,calcium carbonate, (calcite) or ,calcium, sulfate (gypsum) as seed. The ASP ,removal, of ,calcium, from municipal ,wastewater, using ,calcium carbonate, seed is difficult due to the presence of considerable quantities of phosphate and magnesium. ... recovery after the addition of 3 mg L-1 Flocon 135 antiscalant and ,acid, dosing to achieve a pH of

METHOD 7196A CHROMIUM HEXAVALENT (COLORIMETRIC)
METHOD 7196A CHROMIUM HEXAVALENT (COLORIMETRIC)

2O, 7 (analytical reagent grade), in reagent water and dilute to 1 liter (1 mL = 50 ug ,Cr,). 5.3 Potassium dichromate standard solution: Dilute 10.00 mL potassium dichromate stock solution to 100 mL (1 mL = 5 ug ,Cr,). 5.4 Sulfuric ,acid,, 10% (v/v): Dilute 10 mL of distilled reagent grade or spectrograde quality sulfuric ,acid,…

Calcium removal from industrial wastewater by bio ...
Calcium removal from industrial wastewater by bio ...

High concentrations of soluble ,calcium, in industrial ,wastewater, present problems due to the calcification of downstream processing. The current trend towards circuit closure and increased water re‐use will escalate this problem. We investigated ureolytic microbial ,carbonate, precipitation as a novel process for removing excess ,calcium, from industrial effluents. Two laboratory‐scale reactors ...

Advanced treatment of livestock wastewater using an ...
Advanced treatment of livestock wastewater using an ...

The present study was carried out to analyze the effect of ,calcium carbonate, addition ... In order to examine the effect of ,calcium carbonate, addition on ,wastewater, treatment (especially ammonium oxidation), ... indicating that the PO4-P ,removal, eff† was more than 99.9% in the 0% CaCO3 column, 1.5% CaCOa column, and 20%

ES Materials & Manufacturing
ES Materials & Manufacturing

for ,Cr,(VI) in drinking water of 0.05 mg L–1.42 Rapid, efficient and economical technologies to stringently remove ,Cr,(VI) from polluted water are actively pursued. ,Cr,(VI) in ,wastewater, exists as chromate (CrO2–), dichromate 4 (CrO2–) and hydrogen chromate (HCrO– and HCrO), dependent on 2 7 4 2 4

9.4: Redox Titrations - Chemistry LibreTexts
9.4: Redox Titrations - Chemistry LibreTexts

The determination of, COD, is particularly important in managing, industrial wastewater, treatment facilities where it is used to monitor the release of organic-rich wastes into municipal sewer systems or the environment. A sample’s, COD, is determined by refluxing it in the presence of excess K 2, Cr 2 O, 7, which serves as the oxidizing agent.

Biological Nutrient Removal Operation
Biological Nutrient Removal Operation

Removal, of Phosphate from ,Wastewater, • General ... and produce carbonic ,acid, (H 2 CO 3). ... • Alkalinity is measured in terms of ,calcium carbonate, or CaCO 3, and it is generally accepted that 7.14 lbs of alkalinity is needed for every 1.00 lb of ammonia oxidized.

Treatment of printed circuit board industrial wastewater ...
Treatment of printed circuit board industrial wastewater ...

30/10/2009, · The extraction agent was prepared by adding 5.7 mL glacial acetic ,acid, and 64.3 mL 1 M NaOH to a 1 L volumetric flask, ,containing, 500 mL of deionized water, the mixture was then diluted it to 1 L. Theoretically, the pH of the extraction agent should be 4.93 ± 0.05 and was checked before testing.

Remediation of heavy metal contaminated groundwater ...
Remediation of heavy metal contaminated groundwater ...

When granulated ,calcium carbonate, was used in the artificially contaminated water, the ,removal, efficiencies of Ni and Zn were more than 97%, but As ,removal, efficiency was lower than 50%. For the continuous column experiment with mixed lime and ,calcium carbonate, at a 1:1 (v/v) ratio, almost all As was removed and more than 98 % of Ni was removed.

Kinetic study of removal heavy metal from aqueous solution ...
Kinetic study of removal heavy metal from aqueous solution ...

2/7/2020, · Chromium (VI) presents more complex kinetics than the other elements, perhaps associated with the tremendous structural difference of the species of which it is a part ( \ (,Cr,_,2O,_7^ {2-}\) ), that ...

Chapter-2-
Chapter-2-

2Cr 2O7 + 14 H 2SO 4 Æ16CO 2 + 64H ,2O, + 10Cr 2(SO4) 3 + 11K 2SO 4 Although the COD test provides a very strong oxidizing environmental, certain aromatic compounds (e.g. pyridine, benzene, and toluene) are not oxidized, and neither is ammonia.

Evaluation of UASB/CO2 stripping system for simultaneous ...
Evaluation of UASB/CO2 stripping system for simultaneous ...

After the UASB process, a gradual decrease of pH was observed and CO 2 ‐stripping indicated the formation ,of acid,/methane and ,carbonate,. The high concentration of ,carbonate, that was generated from the elevated pH of the CO 2 stripper easily reacted with ,calcium, in the ,wastewater, to form a solid‐phase ,calcium carbonate,.

Removal of hexavalent chromium from industrial wastewater ...
Removal of hexavalent chromium from industrial wastewater ...

7/4/2009, · In most cases treatment of ,Cr, (VI)-,containing wastewater, is carried out by reduction to trivalent chromium, of a lower toxicity and forming solid hydroxide for pH ranging from 8 to 10. Electrocoagulation has often been considered for removal of chromium species from liquid wastes by using sacrificial electrodes out of aluminium [1] , [2] , [3] or iron [4] , [5] , [6] , [7] , [8] .

Removing Heavy Metals from Wastewater | Products Finishing
Removing Heavy Metals from Wastewater | Products Finishing

Carbonate, coprecipitation using sodium or ,calcium carbonate, can also be helpful; for example, for soluble lead reduction, lead ,carbonate, is essentially insoluble (0.00011 g/100 mL at 20°C) and will precipitate out. Phosphate precipitation is another option, although this process is not as common.

Synthesis of Polyacrylic Acid Stabilized Amorphous Calcium ...
Synthesis of Polyacrylic Acid Stabilized Amorphous Calcium ...

12/7/2010, · Biogenic ,Calcium Carbonate, with Hierarchical Organic–Inorganic Composite Structure Enhancing the ,Removal, of Pb(II) from ,Wastewater,. ACS Applied Materials & Interfaces 2017, 9 (41) , 35785-35793. DOI: 10.1021/acsami.7b09304. Zhouyue Lei, Shengtong Sun, and Peiyi Wu .

(PDF) Studies on removal of formaldehyde from industrial ...
(PDF) Studies on removal of formaldehyde from industrial ...

The results showed that the maximum percentage removal of ,Cr, (VI) in the tannery industrial ,wastewater, at an optimum adsorbent dosage of 15 g, contact time of 150 min., agitation speed of 750 rpm ...

Evaluation of UASB/CO2 Stripping System for Simultaneous ...
Evaluation of UASB/CO2 Stripping System for Simultaneous ...

After the UASB process, a gradual decrease of pH was observed and CO2-stripping indicated the formation ,of acid,/methane and ,carbonate,. The high concentration of ,carbonate, that was generated from the elevated pH of the CO2 stripper easily reacted with ,calcium, in the ,wastewater, to form a solid-phase ,calcium carbonate,.

Chat Online Inquiry Email

Business cooperation

+86 513525609655

Company address

Road West, North Branch, Jingkai Road, Puyang City