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Articles by Peter Huck
Robustness and Related Concepts for Climate Adaptation in Drinking Water Treatment Systems
1 Introduction Climate change presents increasing challenges for drinking water treatment plants (DWTPs), primarily due to the growing frequency and intensity of extreme weather events that adversely affect surface water quality and quantity for drinking water production. DWTPs rely heavily on surface water sources, such as streams, rivers and lakes, which are crucial for providing freshwater globally.
Anatoxin‐a adsorption by virgin and preloaded granular activated carbon
1 INTRODUCTION Cyanobacterial blooms can produce numerous toxins, and these eponymously termed cyanotoxins are of increasing concern to drinking water providers as eutrophication of source waters continues to stimulate bloom formation. The worldwide occurrence of cyanobacteria can vary considerably—in warmer climates, blooms can be present year-round, whereas in more temperate climates, they pose seasonal risks.
Full‐Scale Ozone-Biofiltration: Seasonally Related Effects on NOM Removal
Natural organic matter (NOM) is a complex matrix of compounds, predominantly composed of carbon, roughly 40 to 60% by weight, and with a small fraction of nitrogen, 1 to 5% by weight (IHSS 2013, Lee & Westerhoff 2006). In certain cases, NOM removal from drinking water is required, which can be challenging for drinking water providers.
Microspheres as Surrogates for Cryptosporidium Filtration
References , et al, 2001. Cryptosporidium and Fluorescent Microsphere Surrogate Removals by Conventional and Biological Filters. Proc. 2001 AWWA WQTC, Denver. , 1988. Some Theoretical and Conceptual Views of Filtration. Jour. AWWA, 80:12: 36. & , 1982. Rapid Mix Design for the Mechanisms of Alum Coagulation, Jour. AWWA, 74:2: 210. et al, 1991. Optimum Backwash of Dual-media Filters and GAC Filter Adsorbers With Air Scour. AWWA Res. Fdn., Denver. et al, 1999. USEPA Method 1622. Jour. AWWA, 91:9: 60. & , 2003.
Cryptosporidium and microsphere removal during late in‐cycle filtration
Several types of surrogates for viable Cryptosporidium parvum oocysts have been evaluated, including surrogates for occurrence, disinfection, and removal. Parameters that have been investigated as potential surrogates for cyst and oocyst removal by drinking water treatment processes have included turbidity, particle counts, heterotrophic plate counts, aerobic spores (typically Bacillus subtilis), ultraviolet absorbance at 254 nm, dissolved organic carbon, and polystyrene microspheres.
Factors Affecting biofilm accumulation in Model Distribution Systems
References et al, 2000. Investigation of the Biological Stability of Water in Treatment Plants and Distribution Systems. AWWA Res. Fdn. and AWWA, Denver. & , 2000. Factors Affecting Microbial Growth in Model Distribution Systems. AWWA Res. Fdn., Denver. ; ; & , 1997. Comparison of Free Chlorine and Monochloramine for the Control of Biofilms in Model Distribution System Biofilms. Proc. 1997 AWWA WQTC, Denver. , 1996.
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