Food production and purification plant of classification
2016-09-05 16:16:04
Food hygiene quality is directly related to people's physical fitness and life safety.
Factors affecting the quality of food hygiene are raw materials and auxiliary materials, production technology and production environment. Food production environment including possible contact with food equipment (industrial equipment), and air personnel, safety purpose of production control is to prevent food processing in unsanitary conditions. Food production clean room (area) pollution control is the key to food production and environmental control, which controls objects include dust and microorganisms.
Microorganisms in the air everywhere, and often attached to dust particles, along with dust, droplets and dander, hair and other communication. Dust particles in the air, the greater the chance of bacterial attached to the dust particles, the opportunity to spread also increases. Similarly, the virus will be attached to the dust particles and spread. Therefore, controlling the amount of dust particles in the air can be controlled microorganisms attached thereto.
Most microbes that 0.3? M. Viruses are the smallest microbes, about 0.005? M or more, followed by Rickettsia. Many different types of bacteria, most of them in the air to form groups. Common bacterial size is 5.5 ~ 6.5? M, fungi 3.1 ~ 3.9? M, high-efficiency air filter (0.5? M, filtration efficiency ≥99.9%) can be substantially removed them.
Air cleanliness refers to a clean environment and how much air containing particulates extent, generally high dust concentration in the air is clean air low, low dust concentration of the air cleanness. Press the concentration of suspended particulates in the air to divide cleanroom and associated controlled environment in the air cleanliness level, per cubic meter of air is the maximum number of particles allowed to determine their level of air cleanliness. Clean Room National Standard GB50073 a 2001 stipulated (area) air cleanliness level of suspended particulates in Table 1-2.
The maximum concentration limit air cleanliness level (N) is greater than or equal to the diameter of the table / (PC / M3)
0.1? M 0.2? M 0.3? M 0.5? M 1? M 5? M
1102
210024104
31000237102358
4,100,002,370,102,035,283
5 100000 2,370,010,200,352,083,229
61,000,000,237,000 102,000,352,008,320 293
7,352,000,832,002,930
8,352,000,083,200,029,300
9,352,000,008,320,000 293000
Note: PC / M3 is the number of particles per unit volume of air suspended particles.
Compared with the original specification GBJ73 a 84, air cleaner grade level increased from four to nine levels, controlling particle size from 2 (0.5? M and 5? M) increased to six (0.1? M, 0.2? m, 0.3? m, 0.5? m, 1? m, and 5? m), and turn off the air cleanliness level allows the use of an intermediate level between integers, such as 1.0,1.1,1.2 ...... 8.9,9.0 level.
Factors affecting the quality of food hygiene are raw materials and auxiliary materials, production technology and production environment. Food production environment including possible contact with food equipment (industrial equipment), and air personnel, safety purpose of production control is to prevent food processing in unsanitary conditions. Food production clean room (area) pollution control is the key to food production and environmental control, which controls objects include dust and microorganisms.
Microorganisms in the air everywhere, and often attached to dust particles, along with dust, droplets and dander, hair and other communication. Dust particles in the air, the greater the chance of bacterial attached to the dust particles, the opportunity to spread also increases. Similarly, the virus will be attached to the dust particles and spread. Therefore, controlling the amount of dust particles in the air can be controlled microorganisms attached thereto.
Most microbes that 0.3? M. Viruses are the smallest microbes, about 0.005? M or more, followed by Rickettsia. Many different types of bacteria, most of them in the air to form groups. Common bacterial size is 5.5 ~ 6.5? M, fungi 3.1 ~ 3.9? M, high-efficiency air filter (0.5? M, filtration efficiency ≥99.9%) can be substantially removed them.
Air cleanliness refers to a clean environment and how much air containing particulates extent, generally high dust concentration in the air is clean air low, low dust concentration of the air cleanness. Press the concentration of suspended particulates in the air to divide cleanroom and associated controlled environment in the air cleanliness level, per cubic meter of air is the maximum number of particles allowed to determine their level of air cleanliness. Clean Room National Standard GB50073 a 2001 stipulated (area) air cleanliness level of suspended particulates in Table 1-2.
The maximum concentration limit air cleanliness level (N) is greater than or equal to the diameter of the table / (PC / M3)
0.1? M 0.2? M 0.3? M 0.5? M 1? M 5? M
1102
210024104
31000237102358
4,100,002,370,102,035,283
5 100000 2,370,010,200,352,083,229
61,000,000,237,000 102,000,352,008,320 293
7,352,000,832,002,930
8,352,000,083,200,029,300
9,352,000,008,320,000 293000
Note: PC / M3 is the number of particles per unit volume of air suspended particles.
Compared with the original specification GBJ73 a 84, air cleaner grade level increased from four to nine levels, controlling particle size from 2 (0.5? M and 5? M) increased to six (0.1? M, 0.2? m, 0.3? m, 0.5? m, 1? m, and 5? m), and turn off the air cleanliness level allows the use of an intermediate level between integers, such as 1.0,1.1,1.2 ...... 8.9,9.0 level.
