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A process for treating acid vanadium precipitation wastewater

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A process for treating acid vanadium precipitation wastewater
Anaerobic Digestion Wastewater Treatment
Anaerobic Digestion Wastewater Treatment

Three stages are known to occur in the biological action involved in the process of digestion of sludge for ,anaerobic digestion wastewater treatment,. These are (1) acidification (2) lysis/ liquefaction or a period of ,acid, digestion and (3) gasification or conversion of acids into methane and carbon dioxide. 1. …

"FEASIBILITY ASSESSMENT OF ACID MINE DRAINAGE AND ...

Over the past few years, researchers have illuminated new approaches to simultaneously ,co,-treat AMD and MWW. However, there is little research on combining the two waste streams within a conventional ,wastewater, treatment plant for ,co,-treatment. ,Co,-treatment could facilitate metal removal from AMD while also improving MWW treatment processes.

Using Sludge Fermentation Liquid To Improve Wastewater ...
Using Sludge Fermentation Liquid To Improve Wastewater ...

Wastewater, biological nutrient removal (BNR) by ,short-cut nitrification-denitrification, (SCND) ,and denitrifying phosphorus removal via nitrite, (DPRN) has several advantages, such as organic carbon source saving. In this paper, a new method, i.e., by using waste activated sludge alkaline fermentation liquid as BNR carbon source, for simultaneously improving SCND and DPRN was reported. First ...

Coagulation and Flocculation in Water and Wastewater ...
Coagulation and Flocculation in Water and Wastewater ...

Coagulation is also important in several ,wastewater, treatment operations. A common example is chemical phosphorus removal and another, in overloaded wastewatertreatment plants, is the practice of chemically enhancing primary treatment to ,reduce, suspended solids and organic loads from primary clarifiers. The Coagulants

Removal Technologies in Wastewater Treatment | IWA Publishing
Removal Technologies in Wastewater Treatment | IWA Publishing

It can reduce the concentration of metal ions to environmentally acceptable levels at an affordable cost (Hammaini et al., 2007). Ahmad et al. (2010) conducted a study and demonstrated that biosorption by ASB is a sustainable technique and effective system that can remove 59.3%, 68.5% and 86.5% of Cd(II), Pb(II) and Zn(II) ions respectively from industrial wastewater, treatment plants and municipal sewage …

Removal of Cr( vi ) from wastewater by a two-step method ...
Removal of Cr( vi ) from wastewater by a two-step method ...

Therefore, by combining oxalic ,acid, and FA, Cr(VI) can be removed from ,wastewater, and its environmental toxicity can be reduced simultaneously. In this study, we investigated a two-step method to eliminate Cr( VI ) from ,wastewater,; in detail, the first step included the reduction of Cr( VI ) to Cr( III ) in the presence of oxalic ,acid,, followed by the adsorption of Cr( III ) onto MFA.

Environmental Protection Agency Wastewater Technology Fact ...
Environmental Protection Agency Wastewater Technology Fact ...

1) The breakdown of acetic ,acid, to form methane and carbon dioxide: CH 3 COOH CH 4 + ,CO, 2 2) The reduction of carbon dioxide by hydrogen gas to form methane: ,CO, 2 + 4H 2 CH 4 + 2 H 2 0 Equilibrium When the system is working properly, the two phases of degradation occur simultaneously in dynamic equilibrium. That is, the volatile organic acids are

Stream Monitoring and Preliminary Co-Treatment of Acid ...
Stream Monitoring and Preliminary Co-Treatment of Acid ...

This study investigated coal-mine drainage (AMD) and municipal ,wastewater, (MWW) contaminant concentrations and conducted the combined treatment in phases I and II: phase I, evaluating the effects of mixing the two based on the extent of ,acid, neutralization and metals removal; phase II: conducting anaerobic batch reactor treatment of AMD and MWW under varying COD/sulfate ratios (0.04-5.0).

Wastewater Disinfection with Peracetic Acid (PAA) and UV ...
Wastewater Disinfection with Peracetic Acid (PAA) and UV ...

Peracetic ,acid, (PAA) and Ultraviolet (UV) combination was shown to provide effective bacterial reduction during field pilot trialing at the Muddy Creek ,Wastewater, Treatment Plant, located in Cincinnati, OH. Reduction of both fecal coliform and E. coli to below the permitted requirements was demonstrated even at low UV energy doses.

Anaerobic Treatment of Liquid Waste
Anaerobic Treatment of Liquid Waste

In a reactor, optimum ,acid, to alkalinity ratio is between 0.1 and 0.5; buffers work to keep the ,acid,/alkalinity ratio in this range. This is done by adding various chemicals, like caustic or magnesium hydroxide, to keep the alkalinity high enough to offset the microbial community’s ,acid, production.

Feasibility of Co-Treating Olive Mill Wastewater and Acid ...
Feasibility of Co-Treating Olive Mill Wastewater and Acid ...

We assessed the ,co,-treatment of ,acid, mine drainage (AMD) and OMWW using SRB-enriched bioreactors and identified the most abundant bacterial populations present under optimized conditions. The process requires a neutralizing agent to create optimal pH conditions for successful removal of …

Environmental Protection Agency Wastewater Technology Fact ...
Environmental Protection Agency Wastewater Technology Fact ...

1) The breakdown of acetic ,acid, to form methane and carbon dioxide: CH 3 COOH CH 4 + ,CO, 2 2) The reduction of carbon dioxide by hydrogen gas to form methane: ,CO, 2 + 4H 2 CH 4 + 2 H 2 0 Equilibrium When the system is working properly, the two phases of degradation occur simultaneously in dynamic equilibrium. That is, the volatile organic acids are

How to Reduce Total Phosphorus in Wastewater Utilities
How to Reduce Total Phosphorus in Wastewater Utilities

27/12/2014, · determine if phosphoric ,acid, is being used and if any alternative metal cleaning processes can be used instead. ,Wastewater, utility operators should review their system’s sewer use ordinance and make needed corrections to disallow discharges of ,wastewater, containing high levels of phosphorus, nitrogen and ammonia. The sewer use

Anaerobic Digestion Wastewater Treatment
Anaerobic Digestion Wastewater Treatment

Three stages are known to occur in the biological action involved in the process of digestion of sludge for ,anaerobic digestion wastewater treatment,. These are (1) acidification (2) lysis/ liquefaction or a period of ,acid, digestion and (3) gasification or conversion of acids into methane and carbon dioxide. 1. …

How can you best treat wastewater with a high pH?
How can you best treat wastewater with a high pH?

The chemical addition for pH neutralization will also increase the TDS content of the ,wastewater,. Therefore, you need to account such increase when evaluating TDS content of the treated water.

Co-treatment of acid mine drainage with municipal ...
Co-treatment of acid mine drainage with municipal ...

Co-treatment of acid mine drainage (AMD) with municipal wastewater (MWW) using the activated sludge process is a novel treatment technology offering potential savings over alternative systems in...

Removal of Cr(vi) from wastewater by a two-step method of ...
Removal of Cr(vi) from wastewater by a two-step method of ...

Therefore, by combining oxalic ,acid, and FA, Cr(VI) can be removed from ,wastewater, and its environ-mental toxicity can be reduced simultaneously. In this study, we investigated a two-step method to eliminate Cr(VI) from ,wastewater,; in detail, the rst step included the reduction of Cr(VI) to Cr(III) in the presence of oxalic ,acid,, fol-

"FEASIBILITY ASSESSMENT OF ACID MINE DRAINAGE AND ...

Over the past few years, researchers have illuminated new approaches to simultaneously ,co,-treat AMD and MWW. However, there is little research on combining the two waste streams within a conventional ,wastewater, treatment plant for ,co,-treatment. ,Co,-treatment could facilitate metal removal from AMD while also improving MWW treatment processes.

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