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Removal of chromium from acidic wastewater by diaphragm electrolysis

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 chromium from acidic wastewater by diaphragm electrolysis
Theory and Practice of Water and Wastewater Treatment 2nd ...
Theory and Practice of Water and Wastewater Treatment 2nd ...

Provides an excellent balance between theory and applications in the ever-evolving field ,of water and wastewater treatment,. Completely updated and expanded, this is the most current and comprehensive textbook available for the areas ,of water and wastewater treatment,, covering the broad spectrum of technologies used in practice today—ranging from commonly used standards to the latest state of ...

APPLICATION OF CLOUD POINT EXTRACTION USING …
APPLICATION OF CLOUD POINT EXTRACTION USING …

quantitative (recovery values >95%), except for gallic ,acid, (recovery 74.2%). Especially in the case of apigenin and luteolin, low surfactant concentrations are sufficient for quantitative removal. Gallic ,acid, p-Coumaric ,acid, Apigenin Luteonin Rutin Protocatechinic ,acid, 65 70 75 80 85 90 95 100

Wastewater Laboratory Basics
Wastewater Laboratory Basics

Wastewater Laboratory Basics, sampling, ammonia, BOD, chlorine residual, fecal coliform, pH, ... the ,concentration, of a substance in an unknown sample by comparing the unknown ... • Glucose-glutamic ,acid, quality control solution. BOD Procedure • Prepare dilution water.

Purified terephthalic acid wastewater biodegradation and ...
Purified terephthalic acid wastewater biodegradation and ...

The results of bioassay at the pilot and ,calculation, with software Ebis3 showed that the 48h-LC 50 (median lethal ,concentration,) to Daphnia magna for the PTA ,concentration, in the ,wastewater, was only 1/10 of that for the chemical PTA. There were 5 kinds of benzoate pollutants and their toxicities existing in the ,wastewater, at least.

Understanding how temperature and substrate influence ...
Understanding how temperature and substrate influence ...

1/4/2019, · A higher ,concentration, at the start of the bioreactor, the faster the kinetics. Starting at a lower initial ,concentration, near the Ks value will significantly hinder the growth rate. The aerobic solids retention time (SRT a) required to grow nitrifiers is the inverse of …

Effective removal of calcium and magnesium sulfates from ...
Effective removal of calcium and magnesium sulfates from ...

For comparison, the precipitation of Ca and Mg from ,wastewater, with oxalic ,acid, was also evaluated (process-II). Detailed material balance calculations of Ca and Mg are presented in Table 3. The residual ,concentration, of Ca and Mg in the treated water (process-II) were determined as 0.0981 and 2.41 g …

Development of an Analytical Method for the Determination ...
Development of an Analytical Method for the Determination ...

A ,concentration, of 9.70 ± 0.16 mg L −1 was calculated, which corresponds to a percentage recovery of 97.0 ± 1.6% for amoxicillin in ,wastewater,. This result is the good indicator for the accuracy of the method.

A 100.0-g sample of industrial wastewater was determined ...
A 100.0-g sample of industrial wastewater was determined ...

A 100.0-g sample of industrial ,wastewater, was determined to contain 0.96 mg of mercury. Express the mercury ,concentration, of the ,wastewater, in ppm.

Sulfuric acid waste recycling by regenerative process ...
Sulfuric acid waste recycling by regenerative process ...

Nitric ,acid, is considered possibly present, here in the feed stream high 1 at 20-30% levels. This may be removed and recovered by distillation, and used to produce fertilizer or recycled. For the general process, high and low ,acid concentration, waste streams can be processed separately or together.

A 100.0-g sample of industrial wastewater was determined ...
A 100.0-g sample of industrial wastewater was determined ...

A 100.0-g sample of industrial ,wastewater, was determined to contain 0.96 mg of mercury. Express the mercury ,concentration, of the ,wastewater, in ppm.

cooling tower calculation – Water Technology Report
cooling tower calculation – Water Technology Report

Acid, Injection: Mineral ,acid,, such as sulfuric or hydrochloric, neutralizes carbonate alkalinity resulting in a decrease in pH. Reducing the carbonate alkalinity increases the solubility of calcium salts such as calcium carbonate by preventing the formation of carbonate (CO3) alkalinity and its subsequent reaction with calcium hardness to form lime scale.

Treatment and characterization of phosphorus from ...
Treatment and characterization of phosphorus from ...

14/8/2019, · Measurements of phosphorus ,concentration, from synthetic ,wastewater,. The analysis of phosphorus was measured colorimetrically using ascorbic ,acid, method following the standard procedures outlined in . The filtered sample was mixed with ammonium molybdate that forms molybdo-phosphoric ,acid, with any phosphate present in the water sample.

(PDF) Mathematics Manual for Water and Wastewater ...
(PDF) Mathematics Manual for Water and Wastewater ...

Mathematics Manual for ,Water and Wastewater Treatment Plant Operators,. Saber Ebaid. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 30 Full PDFs related to this paper. READ PAPER. Mathematics Manual for ,Water and Wastewater Treatment Plant Operators,…

Acid Etches - an overview | ScienceDirect Topics
Acid Etches - an overview | ScienceDirect Topics

Acetic ,acid, in water may be determined by titration. Harmful to aquatic life. Octanol-water coefficient: Unlikely to bioaccumulate in marine organisms. –0.2 to –0.31. The following ,wastewater, treatment technologies have been investigated for acetic ,acid,: activated carbon; reverse osmosis [83]. Routes of Entry. Inhalation, skin and/or eye contact.

Purified terephthalic acid wastewater biodegradation and ...
Purified terephthalic acid wastewater biodegradation and ...

The results of bioassay at the pilot and ,calculation, with software Ebis3 showed that the 48h-LC 50 (median lethal ,concentration,) to Daphnia magna for the PTA ,concentration, in the ,wastewater, was only 1/10 of that for the chemical PTA. There were 5 kinds of benzoate pollutants and their toxicities existing in the ,wastewater, at least.

Development of an Analytical Method for the Determination ...
Development of an Analytical Method for the Determination ...

A ,concentration, of 9.70 ± 0.16 mg L −1 was calculated, which corresponds to a percentage recovery of 97.0 ± 1.6% for amoxicillin in ,wastewater,. This result is the good indicator for the accuracy of the method.

Water quality for agriculture
Water quality for agriculture

The ,acid, can be added to the system on a continuous basis if the problem is severe enough but this is expensive and difficult and the ,acid, is dangerous to handle. It is recommended that ,acid, be added at a rate to maintain pH close to but not lower than pH 6.5. Sulphur burners have also been used to acidify the supply water for drip irrigation.

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