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Treatment of acid metal wastewater by adding calcium carbonate

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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Treatment of acid metal wastewater by adding calcium carbonate
Adsorption-extraction Technique can Track the Spread of ...
Adsorption-extraction Technique can Track the Spread of ...

‘Adsorption-extraction technique can be used as a quick, cost-effective method to detect COVID-19 and control the spread of the virus in waste water.’ Read More..

Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...
Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...

An efficient way to synthesize α-FeOOH from pickling ,wastewater, in a falling film tower was proposed for the first time. This ,method, overcomes the shortcomings of the traditional air oxidation ,method,, and its production efficiency is increased by 16 times. The purity of α-FeOOH synthesized from pickling ,wastewater, can reach 96.3%, and the iron recovery rate is greater than 90%. At the same ...

Water Quality Assessment of Surface and Groundwater ...
Water Quality Assessment of Surface and Groundwater ...

studied include pH, temperature, ,acidity,, total alkalinity, chloride content and total CO2. A Flame Atomic Absorption spectrophotometer was used to determine the concentrations of Ca, Mg, Cu, Cr, and Pb in the water samples. The total coliform was determined using the most probable number

LI WASTEWATER TREATMENT SYSTEM
LI WASTEWATER TREATMENT SYSTEM

hydrogen peroxide, may provide a simple, effective and economical method of destroying explosive-related contaminants of wastewater, allowing for direct discharge of the treated effluent. This report explores the engineering parameters necessary for final design and construction of …

Water Analysis & Test Method - SlideShare
Water Analysis & Test Method - SlideShare

∗ SulfaVer 4 Method1 ∗ ,Method, 10248 Powder Pillows ∗ Range: 2 to 70, 20 to 700, 200 to 7000 mg/L SO4 2– Scope and application: For water and ,wastewater,. ∗ Adapted from Standard Methods for the Examination of Water and ,Wastewater,. Sulfate 33.

A SIMPLE METHOD FOR THE DETERMINATION OF NITRATE IN …
A SIMPLE METHOD FOR THE DETERMINATION OF NITRATE IN …

method,, but it needs sophisticated setup and equipment. The aim of the present work is to propose ,a simple, and unexpensive ,method,, based on cadmium copperized re-duction column that allows determining nitrate concen-tration in acidic solutions with high iron content. In this study, the ,method, was applied for the analysis of artifi-

A SIMPLE METHOD FOR THE DETERMINATION OF NITRATE IN …
A SIMPLE METHOD FOR THE DETERMINATION OF NITRATE IN …

method,, but it needs sophisticated setup and equipment. The aim of the present work is to propose ,a simple, and unexpensive ,method,, based on cadmium copperized re-duction column that allows determining nitrate concen-tration in acidic solutions with high iron content. In this study, the ,method, was applied for the analysis of artifi-

Using Spectrophotometers for Water and Wastewater Testing
Using Spectrophotometers for Water and Wastewater Testing

•A number of tests are very ,simple, and quick • e.g., chlorine, phosphate, sulfate, total hardness, nitrate • Many tests are easy, but may require a wait time or more prep steps • Some tests require a digestion, e.g. COD, TN, TP •Temperature tends not to interfere •Can test for all nutrients with one instrument

Cpcb water analysis manual - SlideShare
Cpcb water analysis manual - SlideShare

H 2 S-Strip ,method,: This is ,a simple,, reliable and easy-to-perform (by even untrained personnel), ‘Presence / Absence’ test for bacteriological quality, which works on the principle that there is a close correlation between faecal contamination and the presence of hydrogen sulphide (H 2 S)-producing bacteria and, the faecal pollution of water can be deduced by demonstration of H 2 S ...

New Test Screens Wastewater Biosolids for Environmental ...
New Test Screens Wastewater Biosolids for Environmental ...

Simple,, inexpensive ,method, assesses environmental and agricultural effects of treated waste used as fertilizer Every year waste treatment facilities in the United States process more than eight million tons of semi-solid sewage called biosolids—about half of which is recycled into fertilizer and spread on crop land.

A Rapid Microtiter Plate Method To Measure Carbon Dioxide ...
A Rapid Microtiter Plate Method To Measure Carbon Dioxide ...

When the health and activity of a soil are assessed, a basic ,method, is to measure the amount of carbon dioxide (CO 2) that is being respired by soil microorganisms that are decomposing organic substrates within the soil ().It is also possible to measure the substrate-induced respiration (SIR) by measuring the amounts of CO 2 before and after addition of a substrate, such as glucose ().

Water Testing Laboratory | Envirolab Services - Experts ...
Water Testing Laboratory | Envirolab Services - Experts ...

Envirolab Services is specialised in testing for PFAS. Analysis is conducted by combining liquid chromatography with mass spectrometry (LC-MSMS). The LC-MSMS technology provides a fast and accurate method for detecting PFAS in a variety of sample matrices including water, …

New Test Screens Wastewater Biosolids for Environmental ...
New Test Screens Wastewater Biosolids for Environmental ...

Simple,, inexpensive ,method, assesses environmental and agricultural effects of treated waste used as fertilizer Every year waste treatment facilities in the United States process more than eight million tons of semi-solid sewage called biosolids—about half of which is recycled into fertilizer and spread on crop land.

Highly sensitive and selective detect of p-arsanilic acid ...
Highly sensitive and selective detect of p-arsanilic acid ...

first example of a MOF‐based sensor ,to detect, p‐ASA. BUC‐69 showed excel-lent chemical stability in solutions under pH ranging from 4 to 12, which makes it be a potential sensor both in ,acidity, and alkalinity condition. Signifi-cantly, BUC‐69 performed well in fluorescent sensing of p‐ASA at a low con-

Water and Wastewater Industry Glossary of Terms
Water and Wastewater Industry Glossary of Terms

pH: A measure of ,acidity, and alkalinity of a solution that is a number on a scale on which a value of 7 represents neutrality and lower numbers indicate increasing ,acidity, and higher numbers increasing alkalinity and on which each unit of change represents a tenfold change in ,acidity, or alkalinity and that is the negative logarithm of the effective hydrogen-ion concentration or hydrogen-ion activity in gram …

Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...
Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...

An efficient way to synthesize α-FeOOH from pickling ,wastewater, in a falling film tower was proposed for the first time. This ,method, overcomes the shortcomings of the traditional air oxidation ,method,, and its production efficiency is increased by 16 times. The purity of α-FeOOH synthesized from pickling ,wastewater, can reach 96.3%, and the iron recovery rate is greater than 90%. At the same ...

Alkalinity Test Kit at Thomas Scientific
Alkalinity Test Kit at Thomas Scientific

…Water Boiling and Cooling, Water and ,Wastewater, This ,Alkalinity, Test Kits uses a Direct Reading Titrator with standard acid to the phenolphthalein (P) and/or total (T) ,alkalinity, endpoint. Range and sensitivity is 0–200 ppm as CaCO3 in 4 ppm increments. # of Tests: 50 at 200 ppm

Water Analysis & Test Method - SlideShare
Water Analysis & Test Method - SlideShare

∗ SulfaVer 4 Method1 ∗ ,Method, 10248 Powder Pillows ∗ Range: 2 to 70, 20 to 700, 200 to 7000 mg/L SO4 2– Scope and application: For water and ,wastewater,. ∗ Adapted from Standard Methods for the Examination of Water and ,Wastewater,. Sulfate 33.

Method for treating heavy-metal-containing wastewater ...
Method for treating heavy-metal-containing wastewater ...

A ,method, and apparatus for treating heavy-metal-containing ,wastewater, using a sulfidizing agent. Sulfidizing treatment is carried out by adding a sulfidizing agent to heavy-metal-containing ,wastewater,, while detecting hydrogen sulfide gas generated from the ,wastewater,, such as to maintain a state in which hydrogen sulfide gas is just starting to be generated from the ,wastewater,.

A SIMPLE METHOD FOR THE DETERMINATION OF NITRATE IN …
A SIMPLE METHOD FOR THE DETERMINATION OF NITRATE IN …

method,, but it needs sophisticated setup and equipment. The aim of the present work is to propose ,a simple, and unexpensive ,method,, based on cadmium copperized re-duction column that allows determining nitrate concen-tration in acidic solutions with high iron content. In this study, the ,method, was applied for the analysis of artifi-

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