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Neutralization of sulfuric acid in 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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Neutralization of sulfuric acid in acid wastewater
Effective acid and metals treatment in tailings dams ...
Effective acid and metals treatment in tailings dams ...

This approach not only eliminated the need to find ways of disposing highly contaminated wastewater, but also substantially reduced water consumption by enabling treated wastewater to be reused as process water. Acid B reagent was mixed into a slurry using water from the tailings dam and then sprayed onto the surface of the dam.

Iron (Fe) and water - Lenntech
Iron (Fe) and water - Lenntech

Iron, carbonate has a water solubility of 60 mg/L, ,iron, sulphide of 6 mg/L, and ,iron, vitriol even of 295 g/L. Many ,iron, chelation complexes are water soluble. Usually there is a difference between water soluble Fe 2+ compounds and generally water insoluble Fe 3+ compounds.

Reducing Wastewater Discharge by Conservation Reuse and ...
Reducing Wastewater Discharge by Conservation Reuse and ...

19/9/2016, · Effective water management focuses on keeping freshwater withdrawals as ,low, as possible by the implementation of conservation, ,reuse, and recycle policies. Conservation means eliminating waste whereas ,reuse, and recycle strategies seek ways to use water more than once prior to discharge. Using sound chemical engineering principles, plant ,wastewater, can be regenerated by water treatment …

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

27/11/2018, · Note that the ,wastewater, constituents used by Hussein and Scholz contained fertiliser at a very ,low concentration,, and the inflow COD values were within the typical range of the textile effluents (Ghaly et al. 2014) in the case of using a high dye ,concentration, only, which means that the dye in the mixture was responsible for the high load of COD as clarified in Table 6.

OPPORTUNITIES FOR WATER TREATMENT SLUDGE RE-USE
OPPORTUNITIES FOR WATER TREATMENT SLUDGE RE-USE

The ,iron, sludge can be also used for ,wastewater, treatment. ... quantity of this trash is very ,low,. 2. Floc suspensions of ,iron, and alumina oxides from thickening sections in settlement tanks and clarifiers, incl. ... An average ,concentration, of the dry weight in the discharged ,acid

Sludge recycle and reuse in acid mine drainage treatment ...
Sludge recycle and reuse in acid mine drainage treatment ...

Lime slurry (hydrated lime for lower acidity and quicklime for higher acidity) at a ,concentration, of 5% is added to maintain a pH of 8.0 to 9.5. Aeration oxidises ferrous ,iron, to ferric ,iron,, using 1 mg/l oxygen for each 14 mg/l ferrous ,iron,. After the 15-30 min mixing and aeration, solids are coagulated with paddle wheels or turbine flocculators.

Irrigation Water Quality Standards for Indirect Wastewater ...
Irrigation Water Quality Standards for Indirect Wastewater ...

Direct ,wastewater reuse, refers to the method whereby irrigation water is supplied directly from the ,wastewater, treatment plant (WWTP), while indirect ,wastewater reuse, is a method where effluent from the WWTP or untreated ,wastewater, is collected downstream.

Treatment and reuse of coalmine wastewater in Vietnam ...
Treatment and reuse of coalmine wastewater in Vietnam ...

It had a ,low, pH (2–6), high Fe and Mn concentrations (averaging 3–8 mg/L), high suspended solids concentrations (TSS = 150–450 mg/L), and a significantly high hardness (700–900 mg/L as CaCO 3). This ,wastewater, had very ,low, levels of heavy metals, ,low, μg/L levels of …

A Summary of Passive and Active Treatment Technologies for ...
A Summary of Passive and Active Treatment Technologies for ...

acid, drainage is traditionally referred to as “,acid, mine drainage” or “,acid, rock drainage”. The term AMD in this paper encompasses ,acid, (ie. ,low, pH) drainage formed by sulphide oxidation resulting from mining activities, as well as metalliferous drainage, which may have a near-neutral or acidic pH.

Hydrofluoric acid | HF - PubChem
Hydrofluoric acid | HF - PubChem

Hydrofluoric acid, is an irritant to the mucosa of the upper and lower portions of the respiratory tract. As in ocular tissues, concentrations as ,low, as 5 mg/L (5 ppm) may produce irritation to the nasal mucosa. When ,hydrofluoric acid, is present in concentrations greater than 48%, the solution fumes, adding to the volatile airborne fraction.

Polyacrylamide degradation and its implications in ...
Polyacrylamide degradation and its implications in ...

7/9/2018, · In addition to chain scission, hydrolysis of the amide group leads to the generation of a carboxylic ,acid, group and an ammonium ion (at ,low, pH, see Fig. 3), …

GAS PROCESSING: WASTEWATER TREATMENT AND DISPOSAL:
GAS PROCESSING: WASTEWATER TREATMENT AND DISPOSAL:

Produced water is often reusable in reservoir formation flooding operations. Ion exchange process waste streams can have high concentrations of sodium chloride, ,acid, or base, and are high in total dissolved solids. Adjustment of pH may be necessary before discharge with the other plant ,wastewater, streams.

Sludge recycle and reuse in acid mine drainage treatment ...
Sludge recycle and reuse in acid mine drainage treatment ...

The low-pH sludge was withdrawn from the intermediate clarifier. The iron was recovered by acidification and used as wastewater coagulant. The recycle scheme resulted in a 30% decrease in lime requirements, and the resultant coagulant performed well when compared with stock iron coagulant solutions.

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

27/11/2018, · Note that the ,wastewater, constituents used by Hussein and Scholz contained fertiliser at a very ,low concentration,, and the inflow COD values were within the typical range of the textile effluents (Ghaly et al. 2014) in the case of using a high dye ,concentration, only, which means that the dye in the mixture was responsible for the high load of COD as clarified in Table 6.

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

17/11/2011, · The advantages of the combined system are as follow: 1) the anaerobic process could get rid of the organic matters and suspended solid from the ,wastewater,, reduce the organic load of the aerobic degradation as well as the production of aerobic sludge, and finally reduce the volume of the reactors; 2) ,wastewater, pretreated by anaerobic technology is more stable, indicating that anaerobic process could reduce the load fluctuation of the ,wastewater,…

Reducing Wastewater Discharge by Conservation Reuse and ...
Reducing Wastewater Discharge by Conservation Reuse and ...

19/9/2016, · Effective water management focuses on keeping freshwater withdrawals as ,low, as possible by the implementation of conservation, ,reuse, and recycle policies. Conservation means eliminating waste whereas ,reuse, and recycle strategies seek ways to use water more than once prior to discharge. Using sound chemical engineering principles, plant ,wastewater, can be regenerated by water treatment …

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

21/1/2021, · The average recovery ,concentration, in the ,acid, rinse step was 20.98 mg PO 4-P/L, with a minimum of 0.00 mg PO 4-P/L [B5] and a maximum of 125.33 mg PO 4-P/L [B3].

CN103693729A - Treatment method for nitric-acid-containing ...
CN103693729A - Treatment method for nitric-acid-containing ...

The ,wastewater, in adipic ,acid, production that is 3365mg/L by the initial nitrate ,concentration, of 1L packs in reaction vessel, add 67.3g through pretreated ,iron, plane flower and 13.46g thionamic ,acid,, at 30 ℃, soak 8 hours, after reaction, nitrate ,concentration, is 125mg/L, and the selectivity of nitrogen is 93.5%.

OPPORTUNITIES FOR WATER TREATMENT SLUDGE RE-USE
OPPORTUNITIES FOR WATER TREATMENT SLUDGE RE-USE

The ,iron, sludge can be also used for ,wastewater, treatment. ... quantity of this trash is very ,low,. 2. Floc suspensions of ,iron, and alumina oxides from thickening sections in settlement tanks and clarifiers, incl. ... An average ,concentration, of the dry weight in the discharged ,acid

GAS PROCESSING: WASTEWATER TREATMENT AND DISPOSAL:
GAS PROCESSING: WASTEWATER TREATMENT AND DISPOSAL:

Produced water is often reusable in reservoir formation flooding operations. Ion exchange process waste streams can have high concentrations of sodium chloride, ,acid, or base, and are high in total dissolved solids. Adjustment of pH may be necessary before discharge with the other plant ,wastewater, streams.

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