Pollutants and impacts from food retail businesses
\r\nSource
\r\nPossible effects
\r\nFood solids
\r\nFood particles are contained in wastewater from plate leftovers and pot cleaning.
Food solids may:
\r\n- \r\n
- block drainage within your premises, creating expensive plumbing bills \r\n
- damage our pumps and put extra load on the wastewater treatment processes making it more costly to treat the wastewater \r\n
- block wastewater pipes, causing wastewater to back up and overflow. \r\n
Fats, oils and grease
\r\nTrade wastewater from the wash-up includes food particles and sauce, gravy, salad dressing and meat juice residue.
Fats, oils and grease may:
\r\n- \r\n
- block drainage within your premises, creating expensive plumbing bills \r\n
- block wastewater pipes, causing wastewater to back up and overflow \r\n
- damage our pumps and put extra load on the wastewater treatment processes making it more costly to treat the wastewater. \r\n
Biochemical oxygen demand (BOD)
\r\nTrade wastewater contains small particles of food, gravy and sauce residues and sugars. This organic material is a readily accessible food source for micro-organisms that are present in the wastewater system (sewer).
BOD may:
\r\n- \r\n
- cause odours in your premises or in the wastewater system \r\n
- accelerate corrosion in our wastewater system, causing wastewater to leak into the environment and requiring costly repairs. \r\n
High temperature
\r\nHigh temperature dishwashers release wastewater at high temperatures.
Temperatures above 25 °C may:
\r\n- \r\n
- accelerate corrosion in our wastewater system, causing wastewater to leak into the environment and requiring costly repairs \r\n
- affect the operations of your grease trap. High temperature trade wastewater doesn't cool enough to allow oil and grease to separate in the grease trap – this means that the greasy wastewater enters our system potentially causing blockages. \r\n
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源 |
可能的影响 |
---|---|
固体食物 |
食物固体可能:
|
脂肪、油和油脂 |
脂肪、油类和油脂可:
|
生化需氧量(BOD) |
BOD阿美:
|
高温 |
25°C以上的温度可能:
|