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Freezing of acid wastewater

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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Freezing of acid wastewater
Textile dye wastewater characteristics and constituents of ...
Textile dye wastewater characteristics and constituents of ...

27/11/2018, · Sulphuric acid is a strong acid, which is widely used for pH control purposes as a neutralising ,agent,. Sodium lauryl sulphate is used in textile ,wastewater, constituents as a scouring ,agent, (Verma et al. 2012). Urea is one of the main chemicals applied in the printing process of the reactive dyes, causing a high pollutant load.

Aqueous photochemical degradation of mefenamic acid and ...
Aqueous photochemical degradation of mefenamic acid and ...

In this study, photochemical degradation of two emerging pharmaceutical chemicals,, mefenamic acid (MF), and, triclosan, (TCS), was investigated to clarify the role of treated wastewater effluent matrices on their environmental photolysis.

Degradation of Cytotoxic Agent in Soap and Detergent ...
Degradation of Cytotoxic Agent in Soap and Detergent ...

Munawar Iqbal et al., J.Chem.Soc.Pak., Vol. 39, No. 05, 2017 706 ,Degradation, of Cytotoxic ,Agent, in Soap and Detergent ,Wastewater, by Advanced Oxidation Processes 1Munawar Iqbal*, 2Ijaz Ahmad Bhatti, 3Jan Nisarand 4Mazhar Abbas 1Department of Chemistry, The University of Lahore, Lahore, Pakistan. 2Department of Chemistry, University of Agriculture, Faisalabad-38040-Pakistan.

Identification and Physiological Characteristics of ...
Identification and Physiological Characteristics of ...

wastewater, of the sugar factory and has a potential role as a bioremediation ,agent, for the waste. The method used in this study is the experimental, by observing several environmental parameters as indicators, among others, BOD, COD, TSS, and pH. The results of this study found two types of dominant bacteria, i.e., Staphylococcus aureus and Bacillus

Photocatalytic Degradation of Wastewater by Molecularly ...
Photocatalytic Degradation of Wastewater by Molecularly ...

27/1/2020, · Photocatalytic ,Degradation, of ,Wastewater, by Molecularly Imprinted ... is a widely accepted capturing ,agent, for holes 28. 0.1 ... surfaces: photosensitized ,degradation, of a textile azo dye, ,acid, ...

Mechanisms of Peracetic Acid Inactivation of Microbes
Mechanisms of Peracetic Acid Inactivation of Microbes

Peracetic acid (PAA) is a highly effective biocide that has gained in popularity over the past several years as a chlorine alternative for ,wastewater, disinfection 1-3 . Increased interest in PAA is driven by several desirable characteristics,

US5171452A - Phosphoric acid wastewater treatment - Google ...
US5171452A - Phosphoric acid wastewater treatment - Google ...

Treated ,acid, process water (PNAPW) with a pH of about 3 to 4.5, and fluorides of about 20-40 ppm F, is suitable for use in wet rock grinding, so a side stream is conveniently so utilized. According to this invention gypsum filter cakes from ,phosphoric acid, plant operations undergo a first filter cake wash (FIG.

Heterogeneous Catalytic Process for Wastewater Treatment ...
Heterogeneous Catalytic Process for Wastewater Treatment ...

13/6/2019, · Electrocatalysis is mainly used in the treatment of organic ,wastewater,, ,degradation, of chromium-containing ,wastewater,, desulfurization of flue gas and raw coal, the simultaneous removal of NOx and SO 2, and the reduction of carbon dioxide and nitrogen.

US5171452A - Phosphoric acid wastewater treatment - Google ...
US5171452A - Phosphoric acid wastewater treatment - Google ...

Treated ,acid, process water (PNAPW) with a pH of about 3 to 4.5, and fluorides of about 20-40 ppm F, is suitable for use in wet rock grinding, so a side stream is conveniently so utilized. According to this invention gypsum filter cakes from ,phosphoric acid, plant operations undergo a first filter cake wash (FIG.

Environmental fate and microbial degradation of ...
Environmental fate and microbial degradation of ...

3 Microbial ,degradation, of APCAs during ,wastewater, treatment and in the environment. 4 ,Degradation, of APCAs by pure microbial cultures. ... As in the case of rhizoferrin, the tying together of two citric ,acid, residues provides an iron-binding ,agent, much more powerful than citrate alone .

Wastewater Grease and Fatty Acid Removal Study- Aquafix
Wastewater Grease and Fatty Acid Removal Study- Aquafix

27/11/2018, · 15 mL of ,wastewater, was removed from the reactor vessel. This sample was then washed 3x with 5mL of hexane. Samples were centrifuged between hexane washings. The hexane fractions were collected in a separate tube and the hexane removed. Once the hexane was removed 2.5 mL of 2.5% sulfuric ,acid, in methanol was added as a derivatizing ,agent,.

Heterogeneous Catalytic Process for Wastewater Treatment ...
Heterogeneous Catalytic Process for Wastewater Treatment ...

13/6/2019, · The mechanisms of heterogeneous catalytic oxidation ,degradation, of pollutants in ,wastewater, were also discussed. ... as the reducing ,agent, and polyvinylpyrrolidone as the protecting ,agent,. Then, an aqueous solution of urea and variable quantities of Fe 2 ... Stearic acid ,degradation

Mechanisms of Peracetic Acid Inactivation of Microbes
Mechanisms of Peracetic Acid Inactivation of Microbes

Peracetic acid (PAA) is a highly effective biocide that has gained in popularity over the past several years as a chlorine alternative for wastewater disinfection 1-3 . Increased interest in PAA is driven by several desirable characteristics,

Coagulation and Flocculation in Water and Wastewater ...
Coagulation and Flocculation in Water and Wastewater ...

Coagulation and Flocculation in Water and ,Wastewater, Treatment. Coagulation and flocculation are an essential part of drinking water treatment as well as ,wastewater, treatment. This article provides an overview of the processes and looks at the latest thinking. …

Identification and Physiological Characteristics of ...
Identification and Physiological Characteristics of ...

wastewater, of the sugar factory and has a potential role as a bioremediation ,agent, for the waste. The method used in this study is the experimental, by observing several environmental parameters as indicators, among others, BOD, COD, TSS, and pH. The results of this study found two types of dominant bacteria, i.e., Staphylococcus aureus and Bacillus

Oxidative Degradation of Nalidixic Acid by Nano-magnetite ...
Oxidative Degradation of Nalidixic Acid by Nano-magnetite ...

Here, we explored the oxidative capacity of nano-magnetite (Fe3O4) having ∼12 nm particle size, to promote heterogeneous Fenton-like reactions for the removal of nalidixic ,acid, (NAL), a recalcitrant quinolone antibacterial ,agent,. Results show that NAL was adsorbed at the surface of magnetite and was efficiently degraded under oxic conditions.

Catalytic wet oxidation of high concentration ...
Catalytic wet oxidation of high concentration ...

Catalytic wet ,oxidation of high concentration pharmaceutical wastewater with, Fe 3+ as catalyst was carried out in a batch reactor. Results showed that the ,degradation, of pharmaceutical ,wastewater, was enhanced significantly by Fe 3+. The effects of reaction parameters, such as the catalyst dose, reaction temperature, time, and initial oxygen ...

Environmental fate and microbial degradation of ...
Environmental fate and microbial degradation of ...

3 Microbial ,degradation, of APCAs during ,wastewater, treatment and in the environment. 4 ,Degradation, of APCAs by pure microbial cultures. ... As in the case of rhizoferrin, the tying together of two citric ,acid, residues provides an iron-binding ,agent, much more powerful than citrate alone .

Degradation of sunscreen agent p -aminobenzoic acid using ...
Degradation of sunscreen agent p -aminobenzoic acid using ...

Increased usage and discharge of sunscreens have led to ecological safety crisis, and people are developing the advanced oxidation processes (AOPs) to treat them. The present study aimed to determine the ,degradation, efficiency and mechanism of the sunscreen ,agent, p -aminobenzoic ,acid, (PABA) using the UV/Fe 2+ /persulphate (PS) method.

Photocatalytic Degradation of Wastewater by Molecularly ...
Photocatalytic Degradation of Wastewater by Molecularly ...

27/1/2020, · Photocatalytic ,Degradation, of ,Wastewater, by Molecularly Imprinted ... is a widely accepted capturing ,agent, for holes 28. 0.1 ... surfaces: photosensitized ,degradation, of a textile azo dye, ,acid, ...

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