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contributor authorJoshua Dickenson
contributor authorJohn Joseph Sansalone
date accessioned2022-05-07T20:43:49Z
date available2022-05-07T20:43:49Z
date issued2021-09-29
identifier otherJSWBAY.0000964.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4282815
description abstractThe built environment significantly alters the rainfall-runoff response and associated transport of particulate matter (PM), chemicals, and pathogens in the urban water cycle. Urban water sustainability requires mitigation of runoff impacts while providing a potential resource to traditional water supply sources. Chlorination for wastewater, combined sewer overflows (CSOs), and reuse waters is the most common disinfection practice to ensure public health. Chlorinated wastewater effluent is a common reclaimed water for reuse applications such irrigation and mixing with source-area runoff during wet-weather events. Chlorine demand models have been developed for source waters and wastewaters. The current study adds to this knowledge base through modeling of sodium hypochlorite demand kinetics for source-area runoff PM and also dissolved phases utilizing dissolved chemical oxygen demand (CODd). Second-order rate models of hypochlorite demand are developed for both phases, with the PM phase subdivided into three fractions on a granulometric basis. PM (suspended, settleable, and sediment) fractions exert a significant hypochlorite demand compared with the dissolved fraction. Ultimate chlorine demand translates to 36% of the CODd, of which 39% of the demand is exerted in less than 5 min, which is in the range of residence times for small manufactured unit operations that are common for best management practices (BMPs). Chlorine demand is 350  mg/g for suspended, 320  mg/g for settleable, and 650  mg/g for sediment PM.
publisherASCE
titleOverall Rate Kinetics Model for Chlorine Demand of Urban Rainfall Runoff
typeJournal Paper
journal volume8
journal issue1
journal titleJournal of Sustainable Water in the Built Environment
identifier doi10.1061/JSWBAY.0000964
journal fristpage04021020
journal lastpage04021020-11
page11
treeJournal of Sustainable Water in the Built Environment:;2021:;Volume ( 008 ):;issue: 001
contenttypeFulltext


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