4 edition of control of sulphides in sewerage systems. found in the catalog.
|Statement||Edited by D. K. B. Thistlethwayte.|
|Contributions||Technological Standing Committee on Hydrogen Sulphide Corrosion in Sewerage Works.|
|LC Classifications||TD691 .T47|
|The Physical Object|
|Pagination||xv, 173 p.|
|Number of Pages||173|
|LC Control Number||72083514|
Currently, several strategies are being employed by the wastewater industry to control sulfide production in sewer systems. These include, among others, injection of chemicals such as oxygen, nitrate or metal ions to either prevent sulfide formation or to remove sulfide from wastewater once formed (de Lomas et al., ; Hobson and Yang, ). There are many systems available for odor control in wastewater lift stations, but primarily, the only options are to treat the air or to treat the wastewater to remove hydrogen sulfide, ammonia, and other odorous substances. Operators may choose to use adsorption or bio-filters to treat the air carrying odorous gasses. They might.
Control of Hydrogen Sulfide Generation Water and sewer authority installs pH control system in new force main With expectations of continued growth in southern Douglas County, Ga., the Douglasville-Douglas County Water and Sewer Authority (WSA) installed a force main from its new St. Andrews Pump Station to its existing South Central Pump station. The whole of life cost of corroded sewer assets has been estimated at many thousands of dollars per km resulting from H2S gas. Cesca et al. state that “The cost associated with premature deterioration of sewer assets has been estimated at over $12, per km for a hydrogen sulphide concentration of ppm in a mm diameter sewer”.
sulphide levels for this particular sewer system. Sulphide results achieved during the trial using Ferrous Chloride were consistently low and less variable compared to sulphide levels achieved using the nitrate program. The use of an on line sulphide analyser is highly recommended when conducting a sulphide control trial or for optimising an. Sodium chlorite Hydrogen peroxide Sodium or calcium nitrate Iron salts Sodium chlorite (NaClO) is applied at or near the source of hydrogen sulfide. It is also applied in wastewater systems where a retention time of greater than 3 hours is encountered, such as remote sites for long duration control.
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The control of sulphides in sewerage systems [Thistlethwayte, D. B] on *FREE* shipping on qualifying offers. The control of sulphides in sewerage systemsCited by: The control of sulphides in sewerage systems, [D.
B Thistlethwayte] on *FREE* shipping on qualifying offers. The control of sulphides in sewerage systems, D. Thistlethwayte, (ed.), Ann Arbor Science Publishers, Inc., Mich. pages. $ Open Library is an open, editable library catalog, building towards a web page for every book ever published.
The control of sulphides in sewerage systems by D. Thistlethwayte,Ann Arbor Science Publishers edition, in EnglishPages: The control of sulphides in sewerage systems. Sydney: Butterworths. MLA Citation. Thistlethwayte, D.
and Davy, W. and Technological Standing Committee on Hydrogen Sulphide Corrosion in Sewerage Works (Australia). The control of sulphides in sewerage systems / edited by D.K.B.
Thistlethwayte Butterworths Sydney Australian/Harvard. Introduction. Odorous compounds in sewage systems are usually low molecular weight volatile compounds (30 to g/mol) that originate from oxidation of sulfur and/or nitrogen containing organic material or from the reduction of SO 4 2− under anaerobic conditions.
The most noticeable odorous gas produced is hydrogen sulfide (H 2 S), which gives septic sewage its typical rotten-eggs by: Removal of sulfide species from municipal sewage conveyance systems by dosage of iron salts is a relatively common practice.
However, the reactions that occur between dissolved iron and sulfide species in municipal sewage media have not yet been fully quantified, and practical application relies heavily on empirical experience, which is often site specific.
2 AVAILABLE TECHNOLOGIES FOR SULPHIDE CONTROL There are two main strategies to attempt the control of sulphide in sewers: preventing sulphide formation removing the biofilm from the pipewall or avoiding anaerobic conditions in the sewer or eliminating the existing sulphide.
Control of sulfide in sewer systems by dosage of iron salts: comparison betweentheoretical and experimental results, and practical implications. Firer D(1), Friedler E, Lahav O. Author information: (1)Faculty of Civil and Environmental Engineering, Technion, Haifa, Israel.
Removal of sulfide species from municipal sewage conveyance systems by dosage of iron salts is a relatively.
The main cause of odors in sewerage systems is hydrogen sulfide, a gas detectable in very low concentration. Hydrogen sulfide is also noted for its toxicity and for its ability to cause corrosion of various materials used in sewer construction. Much research has been done on various aspects of the sulfide problem in the last three decades.
The control of sulphides in sewerage systems, Author: D K B Thistlethwayte ; Technological Standing Committee on Hydrogen Sulphide Corrosion in Sewerage Works. Control of sulfide in sewer systems by dosage of iron salts: Comparison between theoretical and experimental results, and practical implications.
The control of sulphides in sewerage systems. Author: D K B Thistlethwayte ; Technological Standing Committee on Hydrogen Sulphide Corrosion in Sewerage Works.
collection system would require a longer lasting, more-effective method of control-ling sulfides. H 2 S PRODUCTION To effectively treat H 2 S in wastewater collection systems, one must understand the mechanisms of its production. In collection systems, H 2 S is produced when bacteria consume sulfate oxygen for organic processes.
Fig. 3 –Residual sulfide concentration as a function of Fe(II) to S((MINEQL+ prediction for EC= dS/m and initial sulfide concent - "Control of sulfide in sewer systems by dosage of iron salts: comparison between theoretical and experimental results, and practical implications.".
Intensive field investigations on hydrogen sulphide formation, impacts and control in sewerage systems were carried out during the period – Emphasis was given to determining the importance of sulphate, organic matter, temperature and anaerobic residence time on sulphide formation in a km pressure main.
In the modern world of wastewater treatment, control of odors has moved from an afterthought to a primary design consideration for most collection and treatment facilities. As development encroaches on our facilities and our new neighbors become less tolerant of nuisance odors, wastewater professionals have found the need to address odor as a primary concern in the design and operation.
Hydrogen sulfide (H2S) gas typically is formed in wastewater collection systems that are conducive to creating septic conditions. Collection systems in warm climates that have a flat grade or do not have the flow-through velocities (minimum two feet per second) to prevent the stagnation of fluid, allow the septic conditions to occur.
Nitrate Applications for Hydrogen Sulfide Control Nitrates are a proven technology for medium to long-duration hydrogen sulfide control in collection system gravity and force mains.
They have been used for over 15 years in hydrogen sulfide odor control applications and are a well understood technology. Bioxide) to control odors was investigated in the collection system of Clark County Sanitation District over a three month period in the summer of Bioxide feed stations were set up on the nine sewer lines which exhibited highest sulfide concentrations, several miles from the treatment plant.
Since publication of the Process Design Manual for Sulfide Control in Sanitary Sewerage Systems insubstantial information on odors and corrosion in municipal sewerage systems has been reported. In addition, significant developments have evolved for the control of odors and corrosion in wastewater treatment plants.MICROCAT – ANL BioBlend despite physical changes in the sewer system and mechanical difficulties with the H 2 S monitoring system.
Problem - Year One Hydrogen sulfide generated in sewer systems can cause safety and maintenance problems including toxicity to humans, odors and corrosion. Several methods are used to control H 2.The purpose of this manual is to provide the engineering community and related industry a new source of information to be used in the control of corrosion and noxious conditions resulting from hydrogen sulfide in existing sewerage systems, and in the development of designs for new systems so as to keep them free from these problems.