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Substances used to treat 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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Substances used to treat acid wastewater
Removal of Biorefractory Compounds in Industrial ...
Removal of Biorefractory Compounds in Industrial ...

The goal of this research was to investigate the effectiveness of ,chemical and electrochemical pretreatments, in removing biorefractory compounds from a complex industrial ,wastewater,. The presence of recalcitrant compounds in ,wastewater, reduces the effectiveness of traditional biological treatments; in this case, the COD reduction was around 30%. Therefore, some pretreatments are …

Treatment of vinegar industry wastewater by ...
Treatment of vinegar industry wastewater by ...

Following several treatment experiments with real wastewater samples, aluminum-plate electrodes were able to reach to a removal efficiency of 90.91% at pH 4, 10 mg/L PAC and an electrical current density of 20.00 mA/cm2, whereas iron-plate electrodes reached to a removal efficiency of 93.60% at pH 9, 22.50 mA/cm2 current density.

Fluoride Removal from Industrial Wastewater | Saltworks ...
Fluoride Removal from Industrial Wastewater | Saltworks ...

15/12/2017, · Existing ,removal, options for fluoride wastewaters include: 1) calcium fluoride (CaF 2) precipitation and coagulation, 2) adsorption, 3) ,ion,-exchange, and 4) membrane-based processes such as reverse osmosis and electrodialysis.An industrial ,wastewater, with a high fluoride concentration is often treated through the CaF 2 precipitation and coagulation method.

Graphene Oxide–ZnO Nanocomposites for Removal of Aluminum ...
Graphene Oxide–ZnO Nanocomposites for Removal of Aluminum ...

In this work, we study the functionalization of GO with zinc oxide nanoparticles (ZnO) to improve the removal capacity of aluminum (Al) and copper (Cu) in acidic waters. Experiments were performed at different pH conditions (with and without pH adjustment).

How to Remove Emulsified Oil from Wastewater with ...
How to Remove Emulsified Oil from Wastewater with ...

If ,removal, of the surfactants (soaps) is not required, carbon polishing may not be necessary. Coagulant Breaking. Method 1: For emulsions that break at a pH of 7 or 6, add polyaluminum chloride (PAC), ,aluminum, sulfate or ferric chloride at 50-200 ppm or more as needed. Make sure you are aware ,of aluminum, discharge limits in your locality.

Critical review of advanced oxidation processes in organic ...
Critical review of advanced oxidation processes in organic ...

The oil and COD ,removal, efficiencies were 99.7% and 95% after 1 h of treatment, respectively. Santos et al. treated the petroleum ,wastewater, with using a Ti/RuO 2 electrode in combination with electrochemical oxidation and flotation process, which resulted in 100% COD ,removal, …

Critical review of advanced oxidation processes in organic ...
Critical review of advanced oxidation processes in organic ...

The oil and COD ,removal, efficiencies were 99.7% and 95% after 1 h of treatment, respectively. Santos et al. treated the petroleum ,wastewater, with using a Ti/RuO 2 electrode in combination with electrochemical oxidation and flotation process, which resulted in 100% COD ,removal, …

Removing Heavy Metals From Wastewater
Removing Heavy Metals From Wastewater

removed from the ,wastewater,. However, the metals now exist in another phase or state (i.e., as small solid particles). Metal ,removal, is not complete until these metal solids are physically removed from the ,wastewater,, typically by subsequent sedimentation and filtration processes, as …

Water purification - Wikipedia
Water purification - Wikipedia

Water purification, is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water fit for specific purposes. Most water is purified and disinfected for human consumption (drinking water), but ,water purification, may also be carried out for a variety of other purposes, including medical, pharmacological, chemical ...

Preparation of a novel citric acid-crosslinked Zn-MOF ...
Preparation of a novel citric acid-crosslinked Zn-MOF ...

15/4/2021, · A novel citrate-crosslinked Zn-MOF/chitosan (ZnBDC/CSC) composite was successfully prepared by immobilizing Zn-MOF (ZnBDC) on citrate-crosslinked chitosan (CSC) using citric ,acid, as a chemical bridge.ZnBDC/CSC was characterized by XRD, FT-IR, solid-state 13 C NMR, BET and SEM. The adsorption of ZnBDC/CSC for Cr(VI) and MO from aqueous solutions were studied at pH 5.0.

US5395536A - Wastewater organic acid removal process ...
US5395536A - Wastewater organic acid removal process ...

The preferred polyaluminum chlorohydrate is ,aluminum, chlorohydrate, and the preferred cationic polyelectrolyte is a high molecular weight poly(dimethyl diallyl) ammonium chloride. A process for removing carboxylic acids from aqueous solutions using a composition of a polyaluminum chlorohydrate and a cationic polyelectrolyte is described.

Adsorption of aluminum and lead from wastewater by ...
Adsorption of aluminum and lead from wastewater by ...

1/6/2017, · The applicability of the prepared environmentally friendly biopolymers was evaluated in the, removal, of, aluminum, and lead, ions, from the contaminated, wastewater,. The influence of process parameters including: pH, temperature, biosorbent dose, contact time and initial concentration of metal, ions, on the adsorption capacity of the prepared biosorbents were investigated.

Phosphorus removal and recovery from wastewater via hybrid ...
Phosphorus removal and recovery from wastewater via hybrid ...

21/1/2021, · Phosphorus ,removal, and recovery from ,wastewater, via hybrid ,ion, exchange nanotechnology: a study on sustainable regeneration chemistries Miles Ownby 1 , 2 , David-Alexandre Desrosiers 1 , 2 &

Highly efficient removal of uranium( vi ) from wastewater ...
Highly efficient removal of uranium( vi ) from wastewater ...

The removal of heavy metal ions from waste water can be performed by physical and chemical methods such as adsorption, chemical precipitation, membrane filtration, chromatographic extraction, ion exchange and electrochemical techniques. 7,8 And the adsorption is considered to be a promising and efficient method for removal of U(VI) and other metal ions. 9 The adsorption mechanism involves the …

US5395536A - Wastewater organic acid removal process ...
US5395536A - Wastewater organic acid removal process ...

The preferred polyaluminum chlorohydrate is ,aluminum, chlorohydrate, and the preferred cationic polyelectrolyte is a high molecular weight poly(dimethyl diallyl) ammonium chloride. A process for removing carboxylic acids from aqueous solutions using a composition of a polyaluminum chlorohydrate and a cationic polyelectrolyte is described.

Graphene Oxide–ZnO Nanocomposites for Removal of Aluminum ...
Graphene Oxide–ZnO Nanocomposites for Removal of Aluminum ...

removal capacity of aluminum (Al) and copper (Cu) in acidic waters. Experiments were performed at di erent pH conditions (with and without pH adjustment). In both cases, decorated GO (GO/ZnO) nanocomposites showed an improvement in the removal capacity compared with non-functionalized

Removal of Dissolved Heavy Metals from Acid Rock Drainage ...
Removal of Dissolved Heavy Metals from Acid Rock Drainage ...

The chemical and microbial activity of corroding iron metal is examined in the ,acid rock drainage, (ARD) resulting from pyrite oxidation to determine the effectiveness in neutralizing the ARD and reducing the load of dissolved heavy metals. ARD from Berkeley Pit, MT, is treated with iron in batch reactors and columns containing iron granules. Iron, in acidic solution, hydrolyzes water producing ...

Fluoride Removal from Industrial Wastewater | Saltworks ...
Fluoride Removal from Industrial Wastewater | Saltworks ...

15/12/2017, · Existing ,removal, options for fluoride wastewaters include: 1) calcium fluoride (CaF 2) precipitation and coagulation, 2) adsorption, 3) ,ion,-exchange, and 4) membrane-based processes such as reverse osmosis and electrodialysis.An industrial ,wastewater, with a high fluoride concentration is often treated through the CaF 2 precipitation and coagulation method.

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