Canteen oil and water separator
It is a necessary environmental protection equipment for the back kitchen of the canteen, and its core function is to remove the waste water from the catering industry
Grease, food waste
Separate from wastewater to ensure that drainage meets standards and does not clog the municipal pipe network.
First, the core working principle
adopt
Pure physical separation
Without chemical additions:
1.
slag removal
Go through the grille first
/
滤网拦截菜叶、饭粒等固体残渣。
2.
separation
: use
Oil (
0.91~0.93g/cm³
）比水（1g/cm³）轻The difference in density allows the oil droplets to float naturally, and the water is discharged from the middle.
3.
oil collection
The floating grease collects in the oil collecting tank and is discharged and recycled regularly.
Main types and comparisons (commonly used in cafeterias)
1.无动力重力型（小型食堂）
•
principle
: Pure gravity natural layering, inclined plate
/
波纹板加速分离。
•
efficiency
：
80%~90%
，可分离≥60μm 油滴。
•
advantage
：
Zero electricity bill, simple structure, low price (
3千～6 千元）、维护极少。
•
disadvantage
: large footprint, slow separation,
Low temperature is easy to solidify, manual slag cleaning is required
。
•
apply
：
≤200Small cafeteria, kitchen with less fat.
2.半自动 / 加热型（中型食堂）
•
principle
Gravity separation
+
Constant temperature heating (
35~45℃
） +
手动 / 半自动刮油。
•
efficiency
：
92%~95%
。
•
advantage
：
Anti-grease solidification
It is convenient to drain oil, more efficient, and suitable for most Chinese food scenes.
•
disadvantage
Power connection is required, and manual maintenance is still required.
•
apply
：
200~500
人企业、学校食堂。
3.全自动气浮型（大型 / 重油污食堂）
•
principle
：
microbubble flotation
adsorption micro
/
乳化油滴 + 自动刮渣刮油 + PLC 智能控制。
•
efficiency
：
**95%\
98%**
，出水含油量≤5\10mg/L
（远优于国标≤100mg/L）。
•
advantage
：
Fully automatic operation, complete oil removal, suitable for high oil
/
乳化油（火锅、油炸）、带报警。
•
disadvantage
The price is high (
1~3
万起）、有能耗。
•
apply
：
500人以上大型食堂、地下室、美食城。
III. Key points for canteen selection
1.
by number of people
/
灶头算处理量
￮
Estimation formula:
Processing capacity (
m³/h
）≈ 灶头数 × 50L
￮
Small (
≤200People):
1~3m³/h
￮
Medium (
200\
500人）：3\8m³/h
￮
Large (
≥500People):
8~15m³/h
2.
Select by installation environment
￮
Overground
: first floor
/
有设备间，安装维护方便。
￮
buried
: Outdoor
/
空间小，需防雨、承重。
￮
lifting type
：
Basement Required
Forced drainage with lift pump.
3.
Choose according to the degree of oil pollution
￮
Light cuisine (steamed, boiled): choose unmotivated
/
半自动。
￮
Heavy oil, deep frying, hot pot:
Fully automatic air flotation type must be selected
。
IV. Installation and maintenance
•
install
: As close as possible to the kitchen drainage point to ensure
Smooth water intake and reasonable slope
。
•
maintain
￮
Unpowered:
Daily slag cleaning, weekly oil cleaning
。
￮
Fully automatic: regularly check the slag scraper, heating, and air flotation devices.
Monthly maintenance
。
•
material
: The first choice for canteens
304不锈钢(Corrosion-resistant, easy to clean).
V. compliance requirements
Canteens must install oil and water separators.
Direct discharge of oily sewage is strictly prohibited
。
•
National standard:
GB/T 31962-2015
, the oil content of the effluent
≤100mg/L
。
•
environmental protection
/
城管部门会定期检查，违规将面临罚款。
