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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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The waste water treatment method in PCB manufacturing-News ...
The waste water treatment method in PCB manufacturing-News ...

The waste water of striping and deinking is small, in general use intermittent treatment, utilize organic ink in the acidic conditions, can be separated from the waste water to produce suspended substance to remove, after pretreatment of the ink wastewater, can be mixed into the comprehensive waste water for follow-up treatment, if water flow is high can be used alone biochemical method to deal with

Enriched Co-Treatment of Pharmaceutical and Acidic Metal ...
Enriched Co-Treatment of Pharmaceutical and Acidic Metal ...

The hospital ,wastewater, is much richer in nutrients and ,organic, carbon, making it slightly superior to municipal ,wastewater,, hence promises higher alkalinity production. In the studies by Strosnider et al. [ 9 , 11 , 12 ], where MWW was cotreated with AMD, the ,organic, matter from MWW was used to strip-off bacterial oxygen thud reduction in metal concentration and sulfate.

Removing Heavy Metals From Wastewater
Removing Heavy Metals From Wastewater

Metal Hydroxides - When caustic is added to water ,containing, heavy metals, ... present in wastewaters in dilute quantities (1 - 100 mg/L) and at neutral or ,acidic, pH values (< 7.0). Both of these factors are disadvantageous with regard to metals ... or ,organic, polymers (coagulants) directly to the ,wastewater,.

(PDF) Copper Recovery from Polluted Soils Using Acidic ...
(PDF) Copper Recovery from Polluted Soils Using Acidic ...

Acidic wastewater from a flue gas cleaning process has been shown to effectively (>70%) leach copper (Cu) from contaminated soils [12].In many cases, metal-contaminated sites also contain organic pollutants; especially those at which wood preservation took place using both metal-containing and creosote-based preservers.

Recovery of Copper Nickel and Zinc from Wastewater via ...
Recovery of Copper Nickel and Zinc from Wastewater via ...

In this study, the gold refinery wastewater that contains copper, nickel and zinc in the chloride and nitrate media has been used. Since the wastewater was supplied from the gold refining process, the solution were strongly acidic (pH below 0). In order to adapt the pH for metal extraction firstly caustic solution was added to adjust pH to 1.

(PDF) Standard Methods For the Examination of Water and ...
(PDF) Standard Methods For the Examination of Water and ...

Standard Methods For the Examination of Water and Wastewater,, 23nd edition, 2017. Toan Tran. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 32 Full PDFs related to this paper. READ PAPER. ,Standard Methods For the Examination of Water and Wastewater,…

Remediation of bio-refinery wastewater containing organic ...
Remediation of bio-refinery wastewater containing organic ...

The release of a compendium of toxic pollutants, such as heavy metals, phenols, polycyclic aromatic hydrocarbons, ,organic, compounds of humic origin and acrylic polymers, present at macro (ppm) and micro (ppb) levels, along with a high level of chemical oxygen demand (COD) from ,wastewater, streams, contribute to the complexity in the lignocellulosic bio-refinery ,wastewater, (LBW) treatment ...

Integrated copper-containing wastewater treatment using ...
Integrated copper-containing wastewater treatment using ...

This work employed potassium ethyl xanthate (KEX) to remove ,copper, ions from ,wastewater,. The toxicity characteristic leaching procedure (TCLP) and semi-dynamic leaching test (SDLT) were used to determine the leaching potential and stability characteristics of the residual ,copper, …

Treatment Technologies for Organic Wastewater | IntechOpen
Treatment Technologies for Organic Wastewater | IntechOpen

17/11/2011, · 1.1. Resources of ,organic wastewater,. There are several contaminants in ,wastewater,, with ,organic, pollutants playing the major role. Many kinds of ,organic, compounds, such as PCBs, pesticides, herbicides, phenols, polycylic aromatic hydrocarbons (PAHs), aliphatic and hetercyclic compounds are included in the ,wastewater,, and industrial and agricultural production as well as the people living ...

Irrigation Water Quality Guidelines for Turfgrass Sites
Irrigation Water Quality Guidelines for Turfgrass Sites

The degree of acidity or alkalinity of ,water, can be described by a pH value. pH values range from 0 to 14; any value below 7.0 is considered acid, a value of 7.0 is neutral, and a pH above 7 is alkaline. Thus, ,water, with a pH of 5.8 is ,acidic,, whereas ,water, with a pH of 7.9 is alkaline.

Remediation of acidic industrial effluents by sulphate ...
Remediation of acidic industrial effluents by sulphate ...

The pH of the ,wastewater, increased from 5.5. to 7.18, alkalinity from 0 to 2566 mg/L as CaCO3, acidity removal was from 357 to 210 mg/L as CaCO3, sulphate removal was 92.7%, lead removal was 97.3%, zinc- 99.8%, ,copper,-97.5%, cobalt-99.4%, manganese-98.9%, nickel- 98.3% and iron 99.5%, were observed in this study after the maximum retention of 106 days.

Removal of Arsenic from Strongly Acidic Wastewater Using ...
Removal of Arsenic from Strongly Acidic Wastewater Using ...

The removal of arsenic by traditional sulfide (e.g., Na2S, FeS) from strongly ,acidic wastewater, introduces cations (Na+ and Fe2+) to the solution, which may prevent the recycle of acid. In this study, a new sulfuration agent, phosphorus pentasulfide (P2S5) was employed, and its feasibility in arsenic removal from strongly ,acidic wastewater, was investigated.

Degradation of organic wastewater containing Cu EDTA by Fe ...
Degradation of organic wastewater containing Cu EDTA by Fe ...

chelating ,organic wastewater, using Fe−C micro- electrolysis method [20−23]. The aim of this work is to study the degradation of ,copper, irons and total ,organic, carbon (TOC) in the simulated (CH2N)2[(CH2COO)2Cu]2 ,wastewater, in the Fe−C micro-electrolysis process in order to get the optimal conditions. The mechanism of •OH generation in

Remediation of bio-refinery wastewater containing organic ...
Remediation of bio-refinery wastewater containing organic ...

The experiments conducted by varying the contact time, adsorbent dosage and ,wastewater, pH exhibited the increasing removal efficiencies of the heavy metal ions with the removal of ,copper, (42.22%) being the highest and clearly presented the common adsorption affinity rates of phenols at the different conditions and that they occupy the maximal surface areas of the magnetic particles.

Degradation of organic wastewater containing Cu EDTA by Fe ...
Degradation of organic wastewater containing Cu EDTA by Fe ...

chelating ,organic wastewater, using Fe−C micro- electrolysis method [20−23]. The aim of this work is to study the degradation of ,copper, irons and total ,organic, carbon (TOC) in the simulated (CH2N)2[(CH2COO)2Cu]2 ,wastewater, in the Fe−C micro-electrolysis process in order to get the optimal conditions. The mechanism of •OH generation in

A Quick Guide to Groundwater in Pennsylvania
A Quick Guide to Groundwater in Pennsylvania

Soft water ,containing, less than 200 mg/l dissolved solids; some moderately hard water with high iron concentrations An Important Resource Groundwater in ,Pennsylvania, is a vast resource and is estimated to be more than twice as abundant as the amount of water that flows annually in the state's streams.

Ferric sulfate | Fe2(SO4)3 - PubChem
Ferric sulfate | Fe2(SO4)3 - PubChem

Ferric sulfate, appears as a yellow crystalline solid or a grayish-white powder. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment.

Removing Heavy Metals From Wastewater
Removing Heavy Metals From Wastewater

The goal of the rapid mix operation is to first raise the ,wastewater, pH to form metal hydroxide particles, as discussed above. After the addition of caustic, the next step is to add aluminum or iron salts, or ,organic, polymers (coagulants) directly to the ,wastewater,. These polymers attach to …

RECOVERY OF COPPER (II) AND CHROMIUM (IIIVI) FROM ...
RECOVERY OF COPPER (II) AND CHROMIUM (IIIVI) FROM ...

Two laboratory-scale separation processes have been developed for the recovery of copper (II) from acidic and cyanide-containing alkaline wastewater of electroplating industries. Acidic bath wastes were treated with Dowex 50X8, a strongly acidic cation-exchange resin, …

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