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Treatment of acid industrial 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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Treatment of acid industrial wastewater
Limestone for pH Adjustment in Industrial Wastewater ...
Limestone for pH Adjustment in Industrial Wastewater ...

The neutralization process occurs when strong acids, in intimate contact with limestone chips, react with, Calcium Carbonate, (CaCO 3, the primary constituent of limestone) to form, water,, carbon dioxide, and calcium salts. The following depicts the neutralization of hydrochloric acid by limestone. CaCO 3 + 2HCl → CaCl 2 + CO 2 + H 2 O

DPU Phosphate Removal in Wastewater by Adsorption on ...
DPU Phosphate Removal in Wastewater by Adsorption on ...

on a homogenous surface. In the study of orthophosphate removal from the wastewater from food industry and steel fabrication industry by using obtained optimum operation conditions. The results of the experiment were consistent with the synthetic sample. The percentage of orthophosphate adsorption was higher than 73% and 99 % when using CaCO

water treatment - reagent and treatments than can be used ...
water treatment - reagent and treatments than can be used ...

neutralisation using carbonates : calcium carbonate: CaCO 3 + CO 2 + H 2 O → Ca (HCO 3) 2, sodium carbonate: Na 2 CO 3 + CO 2 + H 2 O → 2NaHCO 3; remineralisation using CO 2 + lime (5a) or CO 2 + calcium carbonate (5b), according to the same reactions as applicable in processes (2) and (4a) ; remineralisation by injecting sodium bicarbonate and a ...

Removal of boron from wastewater by precipitation of a ...
Removal of boron from wastewater by precipitation of a ...

Two usual procedures can be used for the addition of powdered ,calcium, hydroxide in the waste solution: (1) lime is added into the solution at room temperature and after that, the suspension is heated to 90° C; (2) the waste solution is heated to 90° C and after that, powdered ,calcium, hydroxide is added.

Calcium removal from calcium rich paper mill wastewater by ...
Calcium removal from calcium rich paper mill wastewater by ...

removal from ,wastewater, through urea was investigated at optimum operation conditions obtained from the batch tests using a sequencing batch reactor (SBR). The optimum dosage of urea and HRT were determined 4 g/L and 72 h. The results obtained indicated that the ,calcium, removal efficiency was found to be 90.16% at optimum

Efficient removal of copper from wastewater by using ...
Efficient removal of copper from wastewater by using ...

In this work, the, wastewater, containing, sulfate ions, nitrate ,ions or, chloride ,ions was used to investigate the performance of anions in copper removal by mechanically activated calcium carbonate...

Calcium removal from industrial wastewater by bio ...
Calcium removal from industrial wastewater by bio ...

MICP, was also used by Hammes et al. to facilitate the removal of soluble, calcium, (Ca 2+) from industrial wastewater as an alternative to the use of Na2CO3. Their results showed that about 85-90% of...

Calcium Carbonate Packed Electrochemical Precipitation ...
Calcium Carbonate Packed Electrochemical Precipitation ...

The removal of P is attributed to amorphous calcium phosphate (ACP) formation, whereas the removal of, bicarbonate, is mainly due to calcite (CaCO3) formation and acid-base neutralization. While both ACP and calcite results in Ca removal, Ca predominantly ends up in calcite.

water treatment – precipitation inhibitors - Degremont®
water treatment – precipitation inhibitors - Degremont®

in carbonate removal at high carbonate removal pH , NH 4 is displaced to NH 4 OH, thus increasing the residual M-alk. value; some organic, humic or fulvic acids form soluble complexes with calcium and these complexes increase residual hardness;

Calcium (Ca) and water - Lenntech
Calcium (Ca) and water - Lenntech

Other examples of ,calcium, applications are ,calcium, hypo chloride as bleach and for disinfection, ,calcium, phosphate in glass and porcelain industries, ,calcium, polysulphide and hydroxide as flocculants in ,wastewater, treatment, and ,calcium, fluoride as turbidity agent in enamel industries, in UV-spectroscopy, and as a raw material for fluid ,acid, production.

(PDF) Removal of dissolved humic acid from water by ...
(PDF) Removal of dissolved humic acid from water by ...

The removal of HA was evaluated from absorbance at 260 nm Calcium carbonate Neutralizer and concentration of dissolved organic carbon (DOC). The highest removal ratio was found to be 96.6% for Coagulant aid the absorbance of HA and 91.6% for DOC concentration when 30 mg/L of PAC with calcium carbonate (CaCO3) was used as an alkaline reagent.

Influences of iron and calcium carbonate on wastewater ...
Influences of iron and calcium carbonate on wastewater ...

1/9/2016, · ,CO 2, injection has been widely used in ecological, wastewater, treatments to change the carbonate–bicarbonate system and improve the nutrient, removal, performance (Putt et al., 2011)., CO 2, fixation by microalgae has been extensively studied to purify, wastewater, ( Ramaraj et al., 2015 ).

Turning calcium carbonate into a cost-effective wastewater ...
Turning calcium carbonate into a cost-effective wastewater ...

Adsorption as an efficient method is often applied to the treatment of wastewater. The aim of this work is to develop an eco-friendly and cost-effective wastewater-sorbing material with weak acidic pink red B (APRB) and calcium carbonate (CaCO(3)) by reusing highly concentrated dye wastewater.

water treatment - reagent and treatments than can be used ...
water treatment - reagent and treatments than can be used ...

remineralisation using CO 2 + lime (5a) or CO 2 +, calcium carbonate, (5b), according to the same reactions as applicable in processes (2) and (4a) ; remineralisation by injecting sodium bicarbonate and a calcium salt (or bicarbonate on its own if there is an adequate TCa level).

water treatment – precipitation inhibitors - Degremont®
water treatment – precipitation inhibitors - Degremont®

in ,carbonate, removal at high ,carbonate, removal pH , NH 4 is displaced to NH 4 OH, thus increasing the residual M-alk. value; some organic, humic or fulvic acids form soluble complexes with ,calcium, and these complexes increase residual hardness;

How to Remove Calcium from Water in Easy Steps
How to Remove Calcium from Water in Easy Steps

Some calcium mineral deposits, like carbonate hardness (which constitute water hardness), are easily gotten rid of in the process. However, it doesn’t eliminate everything. The carbonate hardness that can be gotten rid of by boiling includes calcium hydroxide, calcium bicarbonate, and calcium carbonate.

Turning calcium carbonate into a cost-effective wastewater ...
Turning calcium carbonate into a cost-effective wastewater ...

The adsorbent is suitable for treatment of concentrated cationic dye and POPs wastewater in neutral media. The addition quantity of the calcium carbonate-APRB adsorbent was suggested below: only 3-5 kg per ton of, wastewater, (<1,000 colority or <2 mg/L POPs) and 20-30 kg per ton of highly concentrated, wastewater, (>20,000 colority or >50 mg/L POPs).

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