By American Society of Civil American Water Works Association
The commonplace reference for water therapy plant layout and modernization has been up-to-date to incorporate scorching issues akin to safeguard and layout, vulnerability checks, and making plans opposed to vandalism and sabotage, in addition to the newest details on codes, laws, and water caliber criteria. * most recent code updates and new water caliber criteria * layout operation and research of remedy amenities
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Additional resources for Water Treatment Plant Design (McGraw-Hill Handbooks)
Sample text
Intake Reliability and Redundancy Reliability is essential, especially for waterworks that depend on a single intake facility. S. elevation Treatment facility Cost Remarks Local surface drainage Wastewater discharge points Lake and stream currents Wind and wave impacts Water depth and variation Maximum available Adequate submergence over inlet ports Avoid ice problems Locate to minimize impact Outside shipping lanes, designed for accidental impact Provisions for unrestricted flowby Maximum practical hydraulic gradient Minimize conduit length to treatment plant Lowest cost consistent with long-term performance and O&M requirements discharge conduits.
In many instances in which regulatory approval of the design has been obtained, change orders must be approved by the agencies to ensure that the project still complies with agency regulations. Regulatory approval of change orders may also be necessary when funding for construction is provided by a regulatory agency. Facilities Start-up The final phase of a water treatment plant construction project involves activities associated with start-up and initial operation of the new facilities. The contractor is normally required to organize and conduct the start-up of new plant facilities, with the owner and designer overseeing the activities.
Are there any existing plant site or hydraulic constraints that must be taken into consideration with the facilities improvements? Design decisions on these issues often require reasonable compromises that must be worked out among the design team, the owner, and regulatory agencies. The costeffectiveness of modifying each existing plant component versus constructing a new component should be considered. Custom-Built Equipment versus Preengineered versus Package When the treatment plant under design has a capacity of less than about 10 million gallons per day (mgd), it is often possible to choose between custom-designed, preengineered, or "package" treatment units.