High rate anaerobic treatment of Sago wastewater using HUASB with PUF as carrier

Abstract

Sago industry is one of the major small-scale sectors in India and over 800 units are located in the southern State of Tamilnadu. Processing of sago generates enormous quantities of high strength wastewater requiring systematic treatment prior to disposal. The present study is an attempt to treat the sago wastewater using Hybrid Upflow Anaerobic Sludge Blanket (HUASB) reactor, which offers the advantages of both fixed film and up flow anaerobic sludge blanket treatment. HUASB reactor with a volume of 5.6 L was operated at Organic Loading Rates varying from 10.7 to 24.7 kg COD/m 3 .day. After 130 days of startup, the reactor produced appreciable decrease in COD of wastewater and removed solids efficiently. The COD removal varied from 91-87%. While the removal of Total Solids was in the range of 61-57%, that of volatile solids varied from 70-67%. The ideal OLR for the reactor was 23.5 kg COD/m 3 .day. The findings of the study open up newer possibilities of design low cost and compact onsite treatment systems with very short retention periods.

Various Sludge Pretreatments: Their Impact on Biogas Generation

“…In the initial phase of hydrolysis, hydrolytic bacteria transfer the unhydrolyzable multifaceted organics such as proteins, carbohydrates and cellulose into soluble substances like amino acids, glucose and fatty acids (Appels et al 2008). The hydrolytic activity is of noteworthy consequence in elevated organic waste and possibly will turn into a rate-restrictive step in anaerobic digestion (Banu et al 2006;Rajakumar et al 2010). Some industrialized functions beat this restriction by the utilization of diverse disintegration that augment hydrolysis.…”

Optimized Hybrid Upflow Anaerobic Sludge Blanket with Post Treatment Processes for Wastewater

“…25 HUASB technology was developed by SR Guiot and L Van den Berg in 1984. 17,[30][31][32][33] It is an amalgamation of UASB and anaerobic filter. 15,34 Flocculent and granular sludge formation has developed in the lower portion of the reactor, which act as Fig.…”

“…1: Classification of High Rate Anaerobic Treatment Technology a UASB whereas the upper portion consists of a fixed film reactor with some inert media used. Various researchers have successfully used the HUASB reactor for the treatment of domestic wastewater, 33,35 Fruit Juice Factory wastewater, 36 Pulp & Paper Mill wastewater, 15 Alkali Treatment of Rice Straw wastewater, 37 Poultry Slaughter House wastewater, 38 Wood Fibre wastewater, 34 Coal wastewater (containing toxic phenolics, 30 Leather Effluent, 39 Pharmaceutical wastewater, 18,40,41 Distillery Spent Wash, 19 Olive Mill Effluent, 42 Sago wastewater, 31 Dairy Industry wastewater. 43,44 This type of reactor is called by various names like Hybrid Upflow Anaerobic Sludge Blanket reactor, Anaerobic Hybrid Reactor, Up-flow Bed Filter, Sludge Bed Filter or just hybrid anaerobic reactor.…”

“…The industries which generate wastewater with high concentration of biodegradable matter such as dairy processing, slaughter house, poultry processing, sago etc, extensively use biological treatments. 9,31,38,[48][49][50][51] High SS generating industries like Pharmaceutical, tannery, pulp and paper, primarily use physicochemical treatment operations. 40,48 Certain nonbiodegradable compounds may also be generated apart from BOD, COD, SS etc.…”

Optimization of Ozonation Process for the Reduction of Excess Sludge Production from Activated Sludge Process of Sago Industry Wastewater Using Central Composite Design

“…Some widely used methods to treat sago wastewater are high-rate anaerobic treatment such as anaerobic filters and fluidized beds [ 1 ], hybrid upflow anaerobic sludge blanket (HUASB) reactor [ 3 ], anaerobic tapered fluidized bed reactor [ 4 ], hybrid reactor [ 5 ], and three-phase fluidized bed bioreactor [ 6 ]. Other biomanagement methods adopted to treat the sago wastewater are using fungi ( G. putredinis, Trichoderma harzianum ) and bacteria ( Alcaligenes, Bacillus, and Corynebacterium ) [ 2 , 7 ].…”