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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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acidic gas field fracturing flow-back fluids recycled plastic
Mining Wastewater | liquideffluents
Mining Wastewater | liquideffluents

17/5/2012, · Acid mine drainage is the, formation and movement of highly acidic water rich in heavy, metals. This acidic water forms through the chemical reaction of surface water (rainwater, snowmelt, pond water) and shallow subsurface water with rocks that …

[PDF] Research of acid mine wastewater treatment ...
[PDF] Research of acid mine wastewater treatment ...

Some commonly used treatment technologies and principle of ,mine acid waste water, treatment were analyzed. And the ,characteristics, of several treatment methods are discussed in this paper. At present, of the acidic mining ,waste water, treatment methods and main method of sulfide precipitation floatation, method of displacement, extraction method, combined processing and biochemical electrode method, …

Mobile Integrated Sustainable System for Treatment of ...
Mobile Integrated Sustainable System for Treatment of ...

Organic Wastewater, Prof. Giora Rytwo Dept. of Environmental Sciences ... Average ,Composition, of selected ,organic,-rich wastewaters (mg/l) BOD 5 COD TSS TKN TP ... buffer ,acidic, pH Siphon flow Coarse texture >4 <8 mm High Conductivity, Tuff gravel with high specific surface.

Chromium Removal from Tannery Wastewater by ...
Chromium Removal from Tannery Wastewater by ...

alkaline and ,acidic, conditions [18,19]. Treating tannery ,wastewater, using EC can generate substantial amounts of sludge that contains chromium, which can be recycled back as a raw material for the tannery process. In this work, the electrochemical removal of chromium from real tannery water using iron electrodes has been studied.

Why and how to treat urban wastewater? - Encyclopedia of ...
Why and how to treat urban wastewater? - Encyclopedia of ...

Composition, of urban ,wastewater,. ... in a very ,acidic, environment and at about 150°C for 2 hours . For raw domestic ,wastewater,, ... using bacteria that transform ,organic, matter in raw ,wastewater, or sewage sludge. A ,wastewater, treatment plant receiving ,wastewater, from 1 million inhabitants can potentially produce 18,000 tonnes of PHA/year. 4.3.

Study of Physico-Chemical Characteristics of Wastewater in ...
Study of Physico-Chemical Characteristics of Wastewater in ...

This study investigates the level of ,wastewater, pollution by analyzing its chemical characteristics at five ,wastewater, collectors. Samples are collected before they discharge into the Danube during a monitoring campaign of two weeks. ,Organic, and inorganic compounds, heavy metals, and biogenic compounds have been analyzed using potentiometric and spectrophotometric methods.

TECHNOLOGIES FOR EFFECTIVE TREATMENT OF ACID MINE …
TECHNOLOGIES FOR EFFECTIVE TREATMENT OF ACID MINE …

metals from ,acid mine, drainage in a human-made bio-system that capitalizes on biological and geochemical reactions [31]. Passive treatment systems are considered to be eco- friendly, low energy, environmentally sustainable ,wastewater, treatment systems. Passive treatment technologies are attractive ,sources, of ,mine wastewater, treatment in coal

[PDF] Research of acid mine wastewater treatment ...
[PDF] Research of acid mine wastewater treatment ...

Some commonly used treatment technologies and principle of ,mine acid waste, water treatment were analyzed. And the ,characteristics, of several treatment methods are discussed in this paper. At present, of the acidic mining ,waste, water treatment methods and main method of sulfide precipitation floatation, method of displacement, extraction method, combined processing and biochemical electrode method, …

Wastewater Treatment Biological & Secondary Treatment of ...
Wastewater Treatment Biological & Secondary Treatment of ...

In biological ,wastewater treatment,, microbes consume the ,organic, material present in ,wastewater, as a source of food containing carbon, nitrogen, phosphorus and other essential nutrients to grow. In return, they convert the high molecular toxic contaminants into smaller non-toxic material that can be discharged safely into the environment.

Chemical oxygen demand - Wikipedia
Chemical oxygen demand - Wikipedia

Overview. The basis for the COD test is that nearly all ,organic, compounds can be fully oxidized to carbon dioxide with a strong oxidizing agent under ,acidic, conditions. The amount of oxygen required to oxidize an ,organic, compound to carbon dioxide, ammonia, and water is given by: + (+) → + + This expression does not include the oxygen demand caused by nitrification, the oxidation of ammonia ...

Physicochemical properties of wastewater collected from ...
Physicochemical properties of wastewater collected from ...

increases due to biodegradation of ,organic, materials that exerts oxygen tension in a water body (28). Increases in BOD can be due to heavy discharge of industrial ,wastewater, effluent, animal and crop wastes, and domestic most common measures of ,organic, pollutant in water. It indicates the amount of ,organic, matter present in water.

Mining Wastewater | liquideffluents
Mining Wastewater | liquideffluents

They give typical ranges of characteristics of mine water to be: High total dissolved solids (500-2000mg/L) High hardness (500-2000mg/l as CaCO 3­) Low suspended solids (10-100mg/L) Low BOD (<5mg/L) Low COD (10-100mg/L) Near neutral ph (7-9.5), except in the case of acid mine drainage, when the ph ...

Acidity and Alkalinity of Soils - EOLSS
Acidity and Alkalinity of Soils - EOLSS

Deposition), irrigation (see ,Wastewater, Treatment and Reuse for Irrigation), agriculture (see ,Organic, Pollution from Agrochemicals) and waste disposal (see Chemistry of Hazardous and Solid Wastes and Leachates). 2. World Distribution ,of Acidic, and Alkaline Soils Soils that are significantly ,acidic, or alkaline cover much of the world’s land area.

Mining Wastewater | liquideffluents
Mining Wastewater | liquideffluents

17/5/2012, · Summary The mining of metallic ores (e.g. iron, copper, lead, zinc, molybdenum, and tungsten), precious metals such as gold, platinum and silver, and large scale coal mining all produces ,wastewater, (U.S.EPA, 2010). As discussed below, this ,waste water, is usually mine drainage pumped from mining areas, water used and discharged from the processing of the…

Chemical Oxygen Demand (COD) in Wastewater I Real Tech Water
Chemical Oxygen Demand (COD) in Wastewater I Real Tech Water

The method involves using a strong oxidizing chemical, potassium dichromate Cr 2 O 7 2-, to oxidize the ,organic, matter in solution to carbon dioxide and water under ,acidic, conditions. Often, the test also involves a silver compound to encourage oxidation of certain ,organic, compounds and mercury to reduce the interference from oxidation of chloride ions.

Wastewater Characteristics Management and Reuse in Mining ...
Wastewater Characteristics Management and Reuse in Mining ...

2. ,Wastewater Sources and Characteristics, In any waste management application, the first step is the identification of ,sources, of ,wastewater, and characterization of the same. The main ,sources, of ,wastewater, from a ,mine, site can be broadly classified into: • ,Mine, water; • Process ,wastewater,; • Domestic ,wastewater,; • Surface run-off. The most probable contaminants in the ,wastewater, produced …

Industrial acid mine drainage and municipal wastewater co ...
Industrial acid mine drainage and municipal wastewater co ...

11/5/2020, · The acid mine water or industrial acid mine drainage (I-AMD), also known as acid rock drainage is one of the most serious and hazardous environmental challenges caused by mining. Two physicochemical characteristics which make I-AMD so hazardous are:, an extremely acidic pH (<4), and, a high concentration of heavy metals (HM s), [ 3, 4 ].

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