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

colle

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.

colle
Winery Wastewater - an overview | ScienceDirect Topics
Winery Wastewater - an overview | ScienceDirect Topics

EO: 300 ,mL, of treated ,wastewater,, BDD/SS cell (50 cm 2 area), liquid flow rate = 300 L h − 1, j = 10 mA cm − 2, ,100, min98% COD: Industrial ,wastewater,: EC: 50 ,mL, of ,wastewater, (890 mg L − 1 COD, ,pH, = 8.0), Fe/Fe cell (25 cm 2 area), j = 80 mA cm − 2, 30 min52% COD [76]

Testing the pH of Wastewater Samples from Cole-Parmer
Testing the pH of Wastewater Samples from Cole-Parmer

15/10/2018, · 1. We recommend a 2-point calibration with a pH 4 and a pH 7 buffer solution for more acidic waste and a pH 7 and a pH 10 buffer solution for more basic waste. The electrode slope should be between 92 and 102%. 2. Just before testing, use a graduated cylinder to measure 60 mL of the wastewater sample into a 100 mL beaker. Stir the sample.

Wastewater Laboratory Basics
Wastewater Laboratory Basics

What is ,pH,? ,pH, is a measure of the hydrogen ion concentration of a solution. The measurement scale is 0 – 14. •Solutions with a ,pH, of 7 are considered neutral. •Solutions with a ,pH, < 7 are considered acidic. •Solutions with a ,pH, > 7 are considered alkaline.

What acid to use for adjusting wastewater pH?
What acid to use for adjusting wastewater pH?

I have digested 0.5 g of sample in HNO³ and diluted upto ,100 ml,. After analysis on AAS the answer is 0.192 ppm. Now How to calculate the actual conc. of Cu in the actual sample?

PERACETIC ACID AS A METHOD OF EFFLUENT WASTEWATER ...
PERACETIC ACID AS A METHOD OF EFFLUENT WASTEWATER ...

4900 – 230000 MPN/,100 mL,. All final effluent (FE) fecal counts were below 10,000 MPN/,100 mL,, which would satisfy the discharge limit once the 51:1 dilution factor is taken into account (200 MPN/,100 mL, X 51=10200 MPN/,100 mL,). Table 1: Log reduction in fecal coliform counts and residual PAA levels at final effluent at various doses.

Lab 3: Alkalinity - Water/Wastewater Distance Learning at ...
Lab 3: Alkalinity - Water/Wastewater Distance Learning at ...

And for the phenolphthalein alkalinity test, you will need the following indicator: phenolphthalein indicator, in a 50 to ,100 mL, dropping bottle. In either test, a ,pH, meter can be used instead of an indicator, if so desired. If using a ,pH, meter, do not add the …

Wastewater Laboratory Basics
Wastewater Laboratory Basics

What is ,pH,? ,pH, is a measure of the hydrogen ion concentration of a solution. The measurement scale is 0 – 14. •Solutions with a ,pH, of 7 are considered neutral. •Solutions with a ,pH, < 7 are considered acidic. •Solutions with a ,pH, > 7 are considered alkaline.

Change in municipal wastewater pH? - ResearchGate
Change in municipal wastewater pH? - ResearchGate

pH, of ,waste water, in the begging was neutral ( 7.0 ) and storing these samples for long time like 2 months .obviously, the undissolved constituents which may include undissolved gases may be ...

pH Measurement | What does pH Measure? | What is the pH of ...
pH Measurement | What does pH Measure? | What is the pH of ...

The ,pH, scale is commonly used to represent hydrogen ion activity. On the ,pH, scale, ,pH, values below 7 represent acidic solutions (hydrogen ion activity greater than hydroxide ion activity) while values above 7 represent basic solutions. At ,pH, = 7, hydrogen ion and hydroxide ion activity are equal.

Analysis Method for pH and Alkalinity | Water Resources ...
Analysis Method for pH and Alkalinity | Water Resources ...

Technically, the ,pH, scale measures the logarithmic concentration of hydrogen (H+) and hydroxide (OH-) ions, which make up water (H+ + OH- = H20). When both types of ions are in equal concentration, the ,pH, is 7.0 or neutral. Below 7.0, the water is acidic (there are more hydrogen ions than hydroxide ions).

Dealing with Waste - Page 4 - Gold Refining Forum.com
Dealing with Waste - Page 4 - Gold Refining Forum.com

19/11/2019, · I usually separate the hydroxides in two steps (>Ph 6 and >Ph 11) and save them to ,experiment, later on in an electro-winning process, getting the waste to a minimum. I usually siphon off the clean sulfuric and reuse that in a new cell, but now i have poured the whole (300ml) of 96% sulfuric containing the gold in two 2 liter beakers and further rinsing of the powder brought it up to 6 Liter.

Disinfection of treated wastewater - University of Washington
Disinfection of treated wastewater - University of Washington

The ,pH, affects this reaction. Lower ,pH, drives the reaction to make HOCl. HOCl (hypochlorous ,acid,) is a more effective disinfectant than OCl--(hypochlorite ion).(hypochlorite ion). A ,pH, …

Laboratory Procedures: Analysis for Wastewater Treatment ...
Laboratory Procedures: Analysis for Wastewater Treatment ...

5. Titrate sample with standard 0.02N sodium hydroxide up to ,pH, 4.00 and note reading. Continue titrating to ,pH, 7.0 and note readings. 6. Calculate volatile ,acid, alkalinity (volume required in #5 to go from ,pH, 4.0 to ,pH, 7.0). Volatile ,Acid, Alkalinity = ,ml, 0.02N NaOH x 1000 ,ml, sample 7.

Using a pH Meter to Test Wastewater - from Cole-Parmer Blog
Using a pH Meter to Test Wastewater - from Cole-Parmer Blog

14/11/2013, · 1. We recommend a 2-point calibration with a pH 4 and a pH 7 buffer solution for more acidic waste and a pH 7 and a pH 10 buffer solution for more basic waste. The electrode slope should be between 92 and 102%. 2. Just before testing, use a graduated cylinder to measure 60 mL of the wastewater sample into a 100 mL beaker. Stir the sample.

Controlling the acid capacity on wastewater treatment plants
Controlling the acid capacity on wastewater treatment plants

buffer system within the ,wastewater,. In unfavorable nitrogen/,acid, capacity ratios the ,pH, can drop to values <4 during nitrification. The following table shows how important a sufficient ,acid, capacity (alkalinity) is: Table 1: ,pH,-dependence of the nitrification Measurement values in the aeration Example 1 Example 2 Example 3 ,pH, 6.4 6.6 7.0

pH Measurement | What does pH Measure? | What is the pH of ...
pH Measurement | What does pH Measure? | What is the pH of ...

The ,pH, scale is commonly used to represent hydrogen ion activity. On the ,pH, scale, ,pH, values below 7 represent acidic solutions (hydrogen ion activity greater than hydroxide ion activity) while values above 7 represent basic solutions. At ,pH, = 7, hydrogen ion …

Determination of Biological Oxygen Demand (BOD) in Waste ...
Determination of Biological Oxygen Demand (BOD) in Waste ...

9/10/2020, · The accuracy of BOD test totally depends upon the proper bacterial growth, present in the water sample. ,pH, of the diluted sample should be adjusted 7.00 ±0.2 before the incubation for five days for proper results. The sample should be neutralized in the following manner. 1.1 Take 50 ,ml, of sample in a ,100 ml, beaker.

Standard Operating Procedure (SOP) 3.2.1.1 Measuring ...
Standard Operating Procedure (SOP) 3.2.1.1 Measuring ...

• ,100,-,ml, graduated cylinder; • 250-,ml, beaker; • ,pH, meter with built-in temperature sensor; • reagent (sulfuric ,acid, titration cartridge, 0.16 N); • standard alkalinity ampoules, 0.500 N, for accuracy check; and • bottle with deionized water to rinse ,pH, …

Chat Online Inquiry Email

Business cooperation

+86 513525609655

Company address

Road West, North Branch, Jingkai Road, Puyang City