Treatment of piggery waste by anaerobic fixed bed reactor and zeolite bed filter in a tropical climate: a pilot scale study

Nitrate removal with bacterial cells attached to quartz sand and zeolite from salty wastewaters

“…In this context, the use of zeolitic materials is of great interest. Zeolites and the related materials have interesting and potentially useful properties, such as large surface area (between 200 and 1000 m 2 /g), they can be hydrophobic or hydrophilic create electrostatic interactions, have different ion-exchanged forms, and exert mechanical and chemical resistance (Nikolaeva et al 2002;Jung et al 2004). The additional advantages are their ease of water dispersion/ recuperation and high water uptake capacity.…”

Mass Transfer Performance of a Water-Sparged Aerocyclone Reactor and Its Application in Wastewater Treatment

“…Pig farms with hundreds to several thousands of animals are in operation in many countries without adequate systems for waste treatment and disposal (Nikolaeva et al, 2002). A large amount of piggery waste is discharged from the cages every day.…”

“…The liquid fraction, a mixture of pig urine, manure leachate and washing wastewater, flows into an anaerobic digester after passing through a simple screen mesh. Practice illustrates that anaerobic digestion can greatly reduce the COD of piggery wastewater (Nikolaeva et al, 2002) . Practical operation of anaerobic digestion in many pig farms in Chongqing area can make the COD of piggery wastewater to be reduced to lower than 500 mg/l.…”

Improving Anaerobic Methane Production from Ammonium-rich Piggery Waste in a Zeolite-fixed Bioreactor and Evaluation of Ammonium Adsorbed on Zeolite A-3 as Fertilizer

“…In recent years, effects of variety, particle size, doses and dosage procedure of zeolite addition on anaerobic digestion of piggery wastes have been investigated [15][16][17]. Kotsopoulos et al [18] showed that adding natural zeolite increased methane production from piggery wastes by reducing the toxicity of ammonia and regulating the C/N (carbon/nitrogen) ratio through ammonia adsorption.…”