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Reductive Chlorination Articles & Analysis
36 articles found
SITE CHARACTERISTICS The aim of this pilot study was to verify the efficiency of sulfidized nanoiron (S-nZVI) in reductive dehalogenation of highly chlorinated ethenes (primarily TCE) in the field conditions. ...
Reduction of total organic carbon (TOC) is critical for a number of industries who use ultrapure water, such as microelectronics, pharmaceuticals and power industries. UV applications in microelectronics includes UV disinfection, TOC reduction, chlorine & chloramines reduction and ozone reduction. As ...
Project date: 01. 09. 2021 – 31. 08. 2024 Tittle of the challange: Monitoring and reduction of chlorine in drinking water Drinking Water Utility needs the solution for monitoring and reducing the use of chlorine preparations in the drinking water supply. The drinking water provided by utility companies often requires the introduction of ...
Cuf was sole sourced for a drinking water facility as it had unmatched purification performance and was the only viable solution for the trend of stricter regulations for reductions in color, THMs, and liquid waste. Cuf achieves all of these water purification requirements and provides an essentially Zero Liquid Discharge solution. A 1 MGD well has been brought online to reduce the demand on its ...
Excessive water ageing is likely to lead to a reduction in residual chlorine concentration, and potentially poor disinfection for communities. ...
60% reduction of total THMs achieved. No more worries about EPA compliance. Topics: clearwell, certified tests, chlorine, trihalomethane reduction, stratification System Overview: This is a two (2) clearwell system with water flow in series through Clearwell #1, Clearwell #2, then to distribution. ...
By using thermal flow meters as a key input into the control loop wastewater treatment plants can save up to 50,000 dollars per year in aeration costs and a reduction in chlorination and pH adjustments. Thermal Mass Flow Meters Measure Digester Gas for Cogeneration To reduce emissions and produce clean energy to offset high electric bills, solid wastes are ...
Many years of experience have shown that acute toxicity can be excluded, when chlorination is executed correctly. With brine chlorine generator, chlorine is produced directly from a solution of common salt using electricity. ...
Topics: potable, THM reduction, TTHM, chlorine, stratification/water age Overview: This tank is a concrete cylindrical potable water storage tank that serves the area's distribution system. ...
Greater than 60% THM reduction observed Topics: clearwell, certified tests, chlorine, trihalomethane reduction, stratification System Overview: Water flows in series through Clearwell #1 to # 2, then onto distribution. ...
We also observed a significant reduction in the primary disinfectant (chlorine). During the period of this study, the plant normally experienced 15 more T & O (taste and odor) complaints from August through October. ...
The present paper utilizes optimization methods to achieve desired segmentation conditions in terms of (a) operating pressure reduction, thus reducing the system's real water losses and (b) residual chlorine concentration reduction thus preventing disinfection byproducts' growth. ...
Topics: Potable, stratification/waterage, short-circuiting, chlorine, treatment savings, economic savings Overview: The original installation was in one of 30 underground water storage tanks used for potable water by the the Customer. ...
Various treatment options were studied including screening, sand filtration, chlorination, and UV disinfection operated at different flow rates. Results showed that filtration operated at low rates is very effective in total suspended solids (TSS) removal, while UV proved to be more effective than chlorination for reduction of biochemical oxygen ...
Chlorine disinfection with 0.3–0.5 mg/L total chlorine (free Cl-dosage 0.12–0.21 mg/L) for 10 min achieved 2.5–5.7 Log10-reductions for 11 sensitive coliphages. The six most resistant coliphages showed no reduction with these chlorine concentrations. MS2 was intermediate in chlorine resistance, ...
The inclusion of chemical-free UV disinfection is now becoming standard practise for many aquatic facilities worldwide. UV systems protect against chlorine resistant micro-organisms and reduce combined chlorine levels, which are the cause of unpleasant smells, red eyes, asthma, contamination from bi-products & chemical structural damage. ...
These organisms appear to be widespread in the environment and can use a variety of different organic substrates as electron donors for perchlorate reduction. Similarly, chlorinated solvents in groundwater are also a frequently encountered problem at DoD facilities. Anaerobic reductive dechlorination has been shown to be an efficient microbial ...
Improved regulations for pulp and paper mill effluents and an industry shift away from elemental chlorine bleaching in the 1990s greatly reduced the release of polychlorinated dibenzo‐p‐dioxins and dibenzofurans (PCDD/Fs) into the environment. ...
The effect of direct addition of chlorine dioxide (ClO2) into a repeatedly alternating aeration/non-aeration sequencing batch reactor (SBR) on its sludge reduction and process performance was investigated. The experimental results showed that the sludge reduction efficiency was 32.9% and the observed growth yield (Yobs) of SBR was 0.11 kg VSS ...
A reduction in the concentration of chlorine, which is used as a chemical disinfectant for water in drinking water distribution systems, can be considered to be an index of the progressive deterioration of water quality. In this work, attention is given to the spatial distribution of the residual chlorine in drinking water distribution systems. ...