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,2013,36(2):422 - 431.
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proach based on cloud model [ J]. Chinese Journal of
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based on cloud models and its application[ J]. Systems
Engineering and Electronics, 2008,30(4):772 - 776.
Study on Food Safety Surveillance and Risk Assessment
Based on Cloud Model
PANG Hongmei,摇 LIU Hongzhi
*
(
School of Computer and Information Engineering
,
Beijing Technology and Business University
,
Beijing
100048,
China
)
Abstract
: In order to predict the problems of food safety in time and reduce the food safety risks, this
study analyzed and established the risk factors system of food safety in three layers. The cloud model was
used to eliminate the fuzziness and randomness in the process of food safety risk assessment and determi鄄
nate the index weight set by using analytic hierarchy process. Moreover, the fuzzy comprehensive evalua鄄
tion method was used to calculate the risk level results to realize the risk assessment of the object.
Key words
: food safety; cloud model; risk assessment
(
责任编辑
:
檀彩莲
詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬
)
(
上接第
89
页
)
Study on Anaerobic Phosphorus Removal Process of Food
Fermentation Wastewater Based on Phosphate Reduction Process
MENG Wei,摇 WANG Ping
*
,摇 TANG Wentao
(
School of Food and Chemical Engineering
,
Beijing Technology and Business University
,
Beijing
100048,
China
)
Abstract
: The anaerobic phosphorus removal process was studied by phosphorus removing bacteria for
mimic food fermentation wastewater. The sludge was acclimation by adding phosphate reducing bacteria in
the anaerobic reactor. The optimum conditions of the phosphorus removal process were determined by the
orthogonal and single factor test. Experimental results indicated that the adding phosphate reducing bacte鄄
ria was a good biochemical and phosphorus removal performance after 12 cycles acclimation. The reactor
effluent COD
Cr
and total phosphorus concentrations were 319郾 60 mg / L and 13郾 58 mg / L and the corre鄄
sponding removal rates were 69郾 43% and 20郾 95% . The optimum conditions of anaerobic phosphorus re鄄
moval process were culture temperature of 30 益, pH of 7, nitrogen source of peptone + NH
4
Cl +
NaNO
3
. Under the optimum conditions, the total phosphorus removal rate was 37郾 96% , and the rate be鄄
tween the resulting PH
3
and the total phosphorus removal content was 24郾 61% .
Key words
: food fermentation wastewater; anaerobic phosphorus removal process; phosphate reduction
process
(
责任编辑
:
檀彩莲
)
49
食品科学技术学报
摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇
摇 2016
年
5
月
