groundwater treatment Articles
-
N. Railroad Ave. Plume Superfund Site - New Mexico
The NRAP site is a state-lead site in its 7th year of groundwater treatment operations by in-situ enhanced reductive dechlorination. The site’s lead agency, the New Mexico Environment Department (NMED), recently completed a response action report to document ongoing progress in their remediation efforts. NMED utilized EnviroInsite in that effort to assist in the interpretation of sampling ...
-
Groundwater treatment - Dundee
Remediation of Hydrocarbon Contaminated Groundwaters Client: Stewart Milne Construction. Consultant: REC Ltd. Challenge: Removal and treatment of 31,000 litres of hydrocarbon contaminated ground water. Applied technology: Removal of contaminated waters to treatment centre. Remediation criteria: Remove ground water with a contamination in excess of 10 mg/kg. Validation: Ongoing monitoring by ...
-
Biobarriers for groundwater treatment: a review
Biobarriers (BBs) are a new type of in situ technology for the remediation of contaminated groundwater. In recent years, this remediation technique has been more and more used in place of traditional Pump & Treat systems or other in situ technologies both in the USA and Europe. This work reviews the main experiences of BBs. The literature contains reports about tests and application at ...
-
Laboratory investigation on the removal of radium from groundwater by Ba(Ra)SO 4 co-precipitation
The USEPA radionuclides regulations have spurred significant research efforts for developing better technology for radium removal from groundwater. The use of barium chloride to remove radium from groundwater is a promising technique. For that, laboratory experiments were carried out to evaluate the effectiveness of different barium chloride doses on the reduction of radium and its impact on ...
-
Use of Carbon Adsorption Processes in Groundwater Treatment
Untitled Document Summary: One of the leading treatment technologies for reduction of organic contaminants in groundwater has become the adsorption process utilizing granular activated carbon (GAC). This paper presents a methodology for selecting the proper adsorption system design. The use of the isotherm test for evaluation of carbon adsorption is discussed, with new ...
-
Important things to consider when you have to treat dewatering discharge water at your site
In many cases when you have to dewater an area of a construction or remediation site to do an excavation or other subsurface work, the water is clean and can be easily discharged without treatment. However, in some cases the soil and groundwater are contaminated, and if dewatering is required, it is highly likely that the discharge water will be contaminated and will require some type of ...
-
Contaminated Groundwater Treatment - Advanced Iron Removal System - Case Study
Market: Municipality Location: Belleville Ontario, Canada Capacity: 800 m3/day (211,337 gpd) of Groundwater Treatment Installed: 2010 The City of Belleville, Ontario was planning on re-developing downtown waterfront property into a public space containing a park and a green space. Unfortunately, the proposed site had a long history as an industrial site – initially for a coal gasification ...
-
Project - Large in-situ groundwater treatment plant - Oil refinery, Saudi Arabia
Industry: Oil and Gas Timeframe: 9 Months Location: Saudi Arabia Value: €540K Challenge Geostream was asked to deliver a large in-situ groundwater treatment plant for a pilot trial on an oil refinery. The plant would target significant dissolved phase hydrocarbon contamination and LNAPL in groundwater across the site, using circa 100 recovery/sparge well points. Before installation ...
By Geostream UK
-
Groundwater treatment with the use of zero-valent iron in the PRB Technology
The industrial dumping sites located in the southern provinces of Poland pollute the groundwater with metals. In the article, the possibility of groundwater (polluted by metals) treatment with the use of PRB Technology has been presented. In this technology, the contaminants are removed from the aquifer by the flow of the groundwater through a PRB filled with a special reactive material. The ...
-
Model R OXIGEST - Petroleum Refinery - Case Study
A large, Midwestern oil refinery installed two identical, 110’ diameter S&L Model R OXIGEST® treatment systems to solve a groundwater treatment problem on-site. Each plant incorporates aeration, clarification, and effluent holding, treating peak flows of 7.2 MGD combined; 4.3 MGD in each plant. The plant operates with a Food-to-Mass (F/M) typical of extended aeration conditions ...
-
Mixed electron donor autotrophic denitrification processes for groundwater treatment by immobilized biological filters
An immobilized biological filter (IBF) using Fe(II) and Mn(II) as mixed electron donors was evaluated for nitrate removal in groundwater. Results of the single factor experiments of strain SZ28 under the conditions of electron donor:electron acceptor ratio (1:2, 1.45:1, 3:1), Fe(II):Mn(II) ratio (1:9, 3:7, 5:5) demonstrated that the highest nitrate removal ratio was 100%, 49.6% (Mn(II)) and ...
-
Case study – condensate-2 contamination
Site: Compressor Station Contaminant: Condensate (benzene) (LNAPL/free product present) Soil Type: Silty Clays Initial Design Reduce plume size by about 66% and Objective: concentrations in hot zone to 20 to 25 ppm Injection Cost: $76,000 (material & labor) Plume Area (before): approximately 12,000 sq. ft. (3200 sq. ft. inside building) Thickness (2 depths): Shallow - 10 to 20 feet bgs, and ...
-
Characterization and comparison of iron oxyhydroxide precipitates from biotic and abiotic groundwater treatments
Removal of iron is an important step in groundwater treatment for drinking water production. It is performed to prevent organoleptic issues and clogging in water supply systems. Iron can be eliminated with a purely physico-chemical (abiotic) method or biotically with the help of iron-oxidizing bacteria (FeOB). Each of the purification methods requires different operating conditions and ...
-
In Search of Ideal Groundwater Treatment
As surface water supplies become increasingly polluted and difficult to treat, the use of groundwater continues to increase. Every day, more than 77 billion gal of water are withdrawn from aquifers for a variety of uses including human consumption. Worldwide, groundwater makes up 95% of available freshwater, and nearly half of the U.S. population receives all or part of its drinking water from ...
-
Technico-economic assessment of groundwater treatment by palladium-on-zeolite-catalyst in comparison to GAC fixed bed adsorbers
A technico-economic comparison between palladium-on-zeolite (Pd/Y), and granular activated carbon (GAC) based methods of groundwater clean-up is presented. The treatment concepts are assessed by means of process-based cost functions that can be applied to a broad range of case-specific conditions. The analysis accounts for variability in cost and performance parameters and reduces the interplay ...
-
More efficient alkalisation with ground limestone in groundwater treatment
Most Finnish groundwater must be alkalised before use as municipal drinking water because it is corrosive. The corrosiveness is due to low pH and softness of water. Groundwater also often contains aggressive carbon dioxide (CO2), so there is more free CO2 than is required to keep calcium and hydrogen carbonate in solution. The most popular alkalisation method in the past was addition of sodium ...
-
Removal of NO3– from groundwater by PP-g-AA-Am non-woven fabric using fixed-bed column reactors
This study investigated the effect of PP-g-AA-AM non-woven fabric on the removal of nitrate nitrogen from groundwater. The breakthrough time was 1.5–2.6, 2.5–5.5, and 6.2–12.2 h for a superficial velocity of 2.0, 1.0, and 0.5 cm/s, respectively, for the nitrate nitrogen concentration in groundwater to satisfy the safe standard for drinking of 10 mg/L (as per the Ministry of ...
-
Enhanced bioremediation of groundwater using in-well methods – Case Study
Overview: This white paper provides a comparison of two groundwater treatment methods that are used to facilitate remediation of floating and dissolved petroleum hydrocarbons in groundwater. Both methods have some merit. However, United Remediation Technology (UniRemTech)’s Wellboom ™ can provide a faster and longer lasting solution due to its composition of absorption and in-situ ...
-
Mathematical model predicting arsenic bioleaching in groundwater treatment
In the Southeast Asia region, arsenic contamination of groundwater has been reported in several countries and a large number of arsenic treatment units were installed in many regions. Microbial activity can greatly affect the mobilization of arsenic under anaerobic conditions when coupled with the oxidation of organic matter. In this study, a mathematical model was developed to predict the ...
-
Assessment of manganese removal from over 100 groundwater treatment plants
The aim of this study was to make an inventory of water quality and operational parameters which could affect manganese removal through aeration and rapid sand filtration and to establish correlations between these parameters and manganese removal efficiency. The focus of the overview was on manganese removal efficiency in the first aeration-filtration stage of conventional groundwater ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you