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Principle of acid wastewater treatment with hydrated lime

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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Principle of acid wastewater treatment with hydrated lime
Process for the decomposition of explosive nitric acid ...
Process for the decomposition of explosive nitric acid ...

A process for effecting thermal decomposition of explosive nitric ,acid esters, in ,wastewater, effluents of the explosives industry wherein no additional by-products are produced and wherein the danger of explosions is avoided. In this process, the dissolved ,esters, are exposed to a temperature of between 150.degree. and 300.degree. C. under pressure lying above the boiling pressure of the ,wastewater,.

Health Effects Associated with Wastewater Treatment Reuse ...
Health Effects Associated with Wastewater Treatment Reuse ...

distribution and content of twelve phthalic ,acid esters, in various ,wastewater, streams from four textile dyeing treatment plants in the Guangdong region of China. The study results showed that the physicochemical and biochemical treatment processes were effective for the removal of phthalic ,acid esters,. In addition, the study

System and method for treating wastewater containing ...
System and method for treating wastewater containing ...

lowering the pH level of the reacted wastewater with an acidic solution that completely dissolves into the reacted wastewater and has an anion that prevents precipitation in the reacted wastewater when added to render the wastewater at a level that the broken down esters can be biodegraded within a wastewater treatment facility.

Elimination and ecotoxicity evaluation of phthalic acid ...
Elimination and ecotoxicity evaluation of phthalic acid ...

Phthalic ,acid esters, Textile-dyeing ,wastewater, Ecotoxicity evaluation ,Wastewater, treatment Dissolved organic matter abstract Phthalic ,acid esters, (PAEs), presented in fabrics, surfactants and detergents, were discharged into the ecosystem during textile-dyeing ,wastewater, treatment and might have adverse effects on water eco-systems.

containing phthalate acid esters Sono-alkalization ...
containing phthalate acid esters Sono-alkalization ...

Keywords: Central composite design, phthalate ,acid esters,, sewage sludge, soluble chemical oxygen demand, sono-alkalization. Introduction Widespread occurrence of phthalate ,acid esters, (PAEs) in the environment raises concerns about their toxicological effects on …

use of fatty acid methyl esters as biomarkers to determine ...
use of fatty acid methyl esters as biomarkers to determine ...

The analysis of fatty ,acid, methyl ,esters, (FAME) profiles provides insight into important changes in microbial communities in ,wastewater, treatment plants, in …

Efficient production of fatty acid methyl esters by a ...
Efficient production of fatty acid methyl esters by a ...

Transesterification of the extracted lipids produced fatty acid methyl esters (FAMEs), which were analysed by gas chromatography (GC). The FAMEs included methyl pentadecanoate (1.90%), cis-10-pentanedecanoic acid methyl ester (1.36%), methyl palmitate (2.64%), methyl palmitoleate (21.36%), methyl oleate (64.95%), methyl linolenate (3.83%) and methyl linolelaidate (3.95%).

Method 1658: The Determination of Phenoxy-Acid Herbicides ...
Method 1658: The Determination of Phenoxy-Acid Herbicides ...

Industrial ,Wastewater, 1. S COPE AND A PPLICATION 1.1 This method is designed to meet the survey requirements of the Environmental Protection Agency (EPA). It is used to determine (1) the phenoxy-,acid, herbicides and herbicide ,esters, associated with the Clean Water Act, the Resource Conservation and

Biodegradation of phthalate esters during the mesophilic ...
Biodegradation of phthalate esters during the mesophilic ...

Phthalic ,acid esters, (PAE) are commonly found in the sludge generated in the ,wastewater, treatment plants. Anaerobic digestion followed by land application …

Occurrence Fate and Distribution Behaviors of Organic ...
Occurrence Fate and Distribution Behaviors of Organic ...

Perfluorinated Alkyl Acids and Phthalic Acid Esters, in Wastewater Effluent and the Housatonic River Estuary. Joanne Ailsa Elmoznino, PhD University of Connecticut, 2016 ABSTRACT The Long Island Sound (LIS) is a local asset strained by population growth and development.

Treatment of Organic Recalcitrant Contaminants in Wastewater
Treatment of Organic Recalcitrant Contaminants in Wastewater

31/3/2016, · Roslev et al. studied the degradation of four different phthalic ,acid esters, in an activated‐sludge process, and showed an almost 96% association of DEHP (showing the least biodegradation among the four phthalates) with the ,wastewater, suspended solids.

Fate of phthalate esters in municipal wastewater treatment ...
Fate of phthalate esters in municipal wastewater treatment ...

The fate and distribution of six phthalate ,esters, (PAEs) in a municipal ,wastewater, treatment plant (WWTP) employing an anaerobic/anoxic/oxic (A 2 /O) process were investigated. The process achieved relatively high removal efficiencies of PAEs in the range 55–97%.

Pretreatment of industrial wastewater containing phthalate ...
Pretreatment of industrial wastewater containing phthalate ...

Esters, of phthalic ,acid, can be detected by IMS (ion mobility spectrometry). The six phthalates in the EPA`s Priority Pollutant List can be detected in both modes--positive as well as negative mode. In the positive mode, a characteristic reduced mobility was obtained for each phthalate; thus the different ,esters, can be distinguished, including the isomeric di-n-octyl- and di-2-ethylhexyl phthalate.

Photodegradation Pathways of Typical Phthalic Acid Esters ...
Photodegradation Pathways of Typical Phthalic Acid Esters ...

Introduction. Phthalic ,acid esters, (PAEs), or phthalates, a chemical class of plasticizers, are widely used in plastic products. The consumption of PAE-containing products results in PAE release to water, the atmosphere, and the soil environment (Rastkari et al., 2018), and PAEs were detected everywhere.After an exploration of sources, Jiang suggested that the discharge of domestic ,wastewater, ...

Treatment of Organic Recalcitrant Contaminants in Wastewater
Treatment of Organic Recalcitrant Contaminants in Wastewater

31/3/2016, · Roslev et al. studied the degradation of four different phthalic ,acid esters, in an activated‐sludge process, and showed an almost 96% association of DEHP (showing the least biodegradation among the four phthalates) with the ,wastewater, suspended solids.

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