Effects of different carbon supplements on phosphorus removal in low C/P ratio industrial wastewater

Chuang, Shu‐Hao; Chang, Wei; Huang, Yao Hui; Tseng, C.C.; Tai, Chia Chuan

doi:10.1016/j.biortech.2010.11.118

Cited by 24 publications

(8 citation statements)

References 23 publications

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“…In anaerobic condition, carbon source, especially VFA, was taken up by DPAO and stored them as PHB, resulting in the P release from the cells of DPAO. So there was a linear relationship between COD consumption and P release in the anaerobic condition, demonstrated by the results (described in Section 2.1) obtained in this study and (Chuang et al 2011).…”

Section: Performance Of Bnr-ic Process In Each Stagesupporting

confidence: 77%

A Novel Process for Nutrients Removal and Phosphorus Recovery From Domestic Wastewater by Combining BNR With Induced Crystallization

Lü

2014

Journal of Environmental Engineering and Landscape Management

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Abstract. Trinitrotoluene (TNT), a commonly used explosive for military and industrial applications, can cause serious environmental pollution. 28-day laboratory pot experiment was carried out applying bioaugmentation using laboratory selected bacterial strains as inoculum, biostimulation with molasses and cabbage leaf extract, and phytoremediation using rye and blue fenugreek to study the effect of these treatments on TNT removal and changes in soil microbial community responsible for contaminant degradation. Chemical analyses revealed significant decreases in TNT concentrations, including reduction of some of the TNT to its amino derivates during the 28-day tests. The combination of bioaugmentation-biostimulation approach coupled with rye cultivation had the most profound effect on TNT degradation. Although plants enhanced the total microbial community abundance, blue fenugreek cultivation did not significantly affect the TNT degradation rate. The results from molecular analyses suggested the survival and elevation of the introduced bacterial strains throughout the experiment. Keywords: TNT, bioaugmentation, biostimulation, phytoremediation, microbial community.

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Section: Performance Of Bnr-ic Process In Each Stagesupporting

confidence: 77%

A Novel Process for Nutrients Removal and Phosphorus Recovery From Domestic Wastewater by Combining BNR With Induced Crystallization

Lü

2014

Journal of Environmental Engineering and Landscape Management

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“…An essential requirement for successful phosphorus removal is to only provide carbon under anaerobic conditions in order to provide PAOs with a selective advantage, as other heterotrophic organisms like glycogen accumulating organisms (GAOs), can take up carbon in the absence of an electron acceptor. The ratio of organic carbon to phosphorus in the influent (C/P ratio) has been shown to have significant impacts on the competition of microbial community for carbon (Thomas et al, 2003;Chuang et al, 2011). Mino et al (1998) found that a low COD/P ratio (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effect of phosphorus load on nutrients removal and N2O emission during low-oxygen simultaneous nitrification and denitrification process

Jia

Liang

Ngo

et al. 2013

Bioresource Technology

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Three laboratory scale anaerobic-aerobic (low-oxygen) SBRs (R1, R2 and R3) were conducted at different influent phosphorus concentration to evaluate the impacts of phosphorus load on nutrients removal and nitrous oxide (N₂O) emission during low-oxygen simultaneous nitrification and denitrification (SND) process. The results showed that TP and TN removals were enhanced simultaneously with the increase in phosphorus load. It was mainly caused by the enrichment of polyphosphate accumulating organisms (PAOs) under high phosphorus load and low COD/P ratio (<50), which could use nitrate/nitrite as electron acceptors to take up the phosphorus. N₂O emission was reduced with increasing phosphorus load. N₂O-N emission amount per cycle of R3 was 24.1% lower than that of R1. It was due to the decrease of N₂O yield by heterotrophic denitrification. When the phosphorus load increased from R1 to R3, heterotrophic denitrification (D) ranged from 42.6% to 36.6% of the N₂O yield.

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“…Since all experiments were conducted in 25 min (with fast stirring for 5 min), followed by a slow stirring for 20 min, and then le to stand for 24 h, phosphate removal may have involved the precipitation of ferric phosphate aer the oxidation of Fe(II) to Fe(III). However, FePO 4 (K sp ¼ 10 À21.9 ) is thermodynamically disfavored relative to the formation of ferric hydroxide (K sp ¼ 10 À38.55 ), 35 which may consume iron and compete against the formation of vivianite (the solubility curves of Fe(OH) 3 , FePO 4 and vivianite are as plotted in Fig. 4S †).…”

Section: 34mentioning

confidence: 99%

“…Wastewater that contains phosphorus is typically generated by municipal, industrial and agricultural activities. 4,5 Taiwan Environmental Protection Agency imposes a standard limit of 1.4 ppm-P for wastewater. 6 In Taiwan, the manufacturing of TFT-LCD involves phosphoric acid as an etching reagent and generates large quantities of wastewater that contains high concentrations of phosphate, which varies from hundreds to a thousand ppm-P. 7,8 Methods for reclaiming phosphorus from water include biological treatment, 9 chemical precipitation, 10 adsorption, 11 electrocoagulation, 12 ion exchange, 13 and crystallization.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus recovery as ferrous phosphate (vivianite) from wastewater produced in manufacture of thin film transistor-liquid crystal displays (TFT-LCD) by a fluidized bed crystallizer (FBC)

2017

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Phosphorus recovery as ferrous phosphate (vivianite) from wastewater produced in manufacture of thin film transistor-liquid crystal displays (TFT-LCD) by a fluidized bed crystallizer (FBC) † Ricky Priambodo, a Yu-Jen Shih * b and Yao-Hui Huang * acIn this investigation, fluidized bed crystallization (FBC) is utilized to treat phosphorus wastewater that is produced by the manufacture of thin film transistor-liquid crystal displays (TFT-LCD). TFT-LCD wastewater contains 500 AE 10 ppm phosphorus. The pH and molar ratio of Fe/P for removing phosphorus was initially examined by performing a jar-test. The parameters of the FBC -effluent pH e , Fe/P ratio and the upflow velocity (m h À1 ) -were tested to recover phosphorus from wastewater as ferrous phosphate pellets, characterized using an X-ray diffractometer (XRD) and scanning electron microscopy (SEM), and silica sand was used as the seed material. The experimental results revealed that the control of effluent pH e was an essential parameter in maximizing the phosphorous removal (PR%) and crystallization ratio (CR%). At pH e 5-6, the supersaturation of phosphate precipitation by conditioning the molar ratio of Fe/P to 1.5 and the upflow rate was adjusted within the range of 30.56-68.76 m h À1 in the metastable zone at a cross-section loading of 0.72 kg per P per h per m 2 , leading to a phosphorus removal (PR) of 95% and a crystallization ratio (CR) of 63%. Under optimal hydraulic conditions, the treatment of real wastewater in a FBC process was viable by converting the pollutant into crystals with a high-purity phase of vivianite (Fe 3 (PO 4 ) 2 $8H 2 O).

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Effects of different carbon supplements on phosphorus removal in low C/P ratio industrial wastewater

Cited by 24 publications

References 23 publications

A Novel Process for Nutrients Removal and Phosphorus Recovery From Domestic Wastewater by Combining BNR With Induced Crystallization

A Novel Process for Nutrients Removal and Phosphorus Recovery From Domestic Wastewater by Combining BNR With Induced Crystallization

Effect of phosphorus load on nutrients removal and N2O emission during low-oxygen simultaneous nitrification and denitrification process

Phosphorus recovery as ferrous phosphate (vivianite) from wastewater produced in manufacture of thin film transistor-liquid crystal displays (TFT-LCD) by a fluidized bed crystallizer (FBC)

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