BEYOND CONVENTIONAL DIGESTION? An Industry Dilemma

Shimp, Gary F.; Stukenberg, John R.; Sandino, Julián

doi:10.2175/193864700784544820

Cited by 5 publications

(3 citation statements)

References 0 publications

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“…The most common implementation of TPAD uses thermophilic digestion (with a temperature range o rmophilic reactor in the TPAD process performed more than two-thirds of the VS destruction and nearly all the fecal coliform destruction. The me ermophilic digestion previously used at the plant (Shimp et al, 2000b). The Hyperion Plant, mentioned before, changed to two-stage thermophilic digestion from its previous mesophilic mode in late 2000.…”

Section: Two-stage Anaerobic Digestionmentioning

confidence: 99%

Energy and Resource Recovery from Sludge

Kalogo

Monteith

2012

wio

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Section: Two-stage Anaerobic Digestionmentioning

confidence: 99%

Energy and Resource Recovery from Sludge

Kalogo

Monteith

2012

wio

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“…It was stated that by installing a temporary centrifuge to assist the belt presses and by changing the operations of the solids handling processes, the plant was able to overcome their solids handling problems and eliminate permit violations. Shimp et al (2000) presents an overview of ongoing research in the area of anaerobic digestion facility process improvements. Conclusions indicated the need for additional study in the areas of dewatering, operation and maintenance, heat recovery, odors and downstream post-processing.…”

Section: Thickening Conditioning and Dewateringmentioning

confidence: 99%

“…The behavior of two different types of sludge was compared, a crust phenomenon in activated sludge was described, and a large permeability of PVC drying cake for water transport was illustrated. Shimp et al (2000) reported that in Western Europe, heat drying is popular because metal content precludes land application of biosolids, and incineration is politically unpopular. Heat drying is used in Western Europe to reduce the volume of biosolids for landfill disposal.…”

Section: Thermal Processesmentioning

confidence: 99%

Biosolids and Sludge Management

Baldwin¹,

Call²,

Danalewich³

et al. 2001

Water Environment Research

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The following literature review covers journal articles related to biosolids and sludge management that were published in 2000. The main topics covered include regulations and planning, reduction of biosolids and sludge production, biosolids and sludge characteristics, thickening, conditioning and dewatering, thermal processes, land application, alternative uses for biosolids, disposal, and articles relating to overall biosolids programs. These topics have been generated by increased regulations and scrutiny of biosolids programs, and the need for continued research and education in the field of biosolids management. REGULATIONS AND PLANNINGConcerns over possible health effects resulting from sludge land application use have reportedly initiated discussions between the EPA and the National Academy of Sciences. Rennier (2000) reported that the EPA may be interested in re-evaluating the 503 regulations. This re-evaluation would focus on human health issues, risk assessment, and ecological issues. Canning (2000) discussed the EPA's proposed dioxin standard of 300 ppt of toxic equivalent for biosolids used in land application.This will effect many treatment plants that exceed these limits indicating that they will be required to find alternative methods of disposal. Conrad (2000) stated that Section 503 regulations are not working, citing examples of improper use of sewage sludge and numerous non-protective aspects of the current standards. Three recommendations were proposed for enhancing Section 503 safeguards: 1) enforce more rigorous monitoring requirements; 2) require limits on infrequently occurring metals and biological contaminants; and 3) increase public awareness and notice of treated land, and universal labeling of sewage sludge products. Birchfield and Stetar (2000) indicated that traditional biosolids handling and disposal methods such as dewatering or incineration can concentrate radionucleotides. The proper management of the land

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