Development of a novel UASB/CO2-stripper system for the removal of calcium ion in paper wastewater

Kim, Yong Hwan; Yeom, Sung Ho; Ryu, Jeong Yong; Song, Bong Keun

doi:10.1016/s0032-9592(03)00269-3

Cited by 37 publications

(25 citation statements)

References 6 publications

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“…to maintain a sufficient reactive surface for crystallization some of the grown particles should be removed regularly and replaced by smallerdiameter seeding grains (9). A novel process composed of UASB and co 2 -stripper was suggested to treat the liner paper wastewater and to precipitate calcium in the wastewater (14,19). the success and effectiveness of this process relies on the addition of naoh in the co 2 stripper.…”

Section: Introductionmentioning

confidence: 99%

Lead Inhibition on Urea Hydrolyzing Microorganisms Under Batch Conditions

Kiliç¹,

Koçyiğit²

2010

Biotechnology & Biotechnological Equipment

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Section: Introductionmentioning

confidence: 99%

Lead Inhibition on Urea Hydrolyzing Microorganisms Under Batch Conditions

Kiliç¹,

Koçyiğit²

2010

Biotechnology & Biotechnological Equipment

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“…Serious decrease of SMA has been reported in the granular sludge with high ash content. However, there have also been contrary reports that sludge with a relative high SMA was attained in spite of the high ash content [11,[13][14][15][16].…”

Section: Calcium Hardness Controlmentioning

confidence: 80%

Technical measures to achieve a cleaner production mode for recycled paper mills

Yang

et al. 2010

Front. Environ. Sci. Eng. China

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China's paper production reached 79.8 Â10 6 t in 2008 and ranked number one in the world. Because of its high consumption of water, energy and materials and its serious pollution, the present processes are not likely to be sustainable. An alternative, the closed Water LoopPapermaking Integration (WLPI) method, is put forward in this paper. The WLPI method can be realized in a recycled paper mill by adding technologies and using recycled water. Many industrial case studies have shown that a large quantity of water, energy and materials can be saved, and the quantity of waste sludge and wastewater discharge was minimized by using the WLPI method. The design of the water reuse system, control of calcium hardness, water recycling and minimal waste sludge are discussed. Anaerobic technology plays an important role in the WLPI method to lower cost, energy use and waste. In the brown paper and coated white board production, zeroeffluent discharge can be realized. Fresh water consumption is only 1-2 m 3 $t -1 . For the paper mills with deinking and bleaching processes, about 10 m 3 $t -1 of fresh water and a similar amount of effluent discharge are needed. Power saving using anaerobic technology is 70% when recycled water is used in comparison with the conventional activated sludge process. Waste sludge can be decreased to about 5% of the initial process due to reuse of the waste sludge and the lower bio-sludge production of the anaerobic process.

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“…Kim, Yeom, Ryu, & Song (2004) [150] achieved 60% removal of the calcium hardness in the CO 2 stripper when a UASB/CO 2 stripper system was used for the treatment of liner paper wastewater. In this situation, more than 60% removal efficiency for the anaerobic process of COD was also observed.…”

Section: Pre Treatment Strategiesmentioning

confidence: 99%