Principle of operation

Fat and starch separators are designed for treatment of process sewage contaminated with greasy substances (vegetable and animal fats) and/or containing starch before it is discharged into the sewer system. These substances do not dissolve in water or dissolve to a negligible extent (in the case of starch – it foams a lot), therefore their direct introduction into sewerage systems causes a number of utility problems (clogging of pipelines and sewerage drains, corrosion of equipment, unpleasant odour), thus hindering the proper operation of sewage treatment plants/sewerage systems. It should be emphasized that the above mentioned separators cannot receive “black” sewage, rain sewage, or sewage containing light liquids and mineral oils.

The separators are flow devices, i.e. they mechanically separate fat from the rest of the sewage as it flows through the system (in the case of starch, the foam formed is neutralised). The separation process is made possible by the flotation phenomenon due to the lower density of the fatty substances in relation to the density of the water. Due to their mode of operation, the separators also retain a portion of the easily settling suspension which accumulates in a settling chamber at the bottom of the unit (sedimentation phenomenon).

The basis for proper separator operation is the proper determination of the nominal flow (the amount of process effluent flowing through the device [L/s]). This determines the basic characteristics of the separator, such as the diameter of the inlet and outlet, the volume of the sedimentation chamber and the volume of the separation chamber. Fat and starch separators manufactured by JPR AQUA are designed for treating process sewage with flows ranging from 0.5 to 30 L/s (standard offer). At the customer’s request we also manufacture devices with higher flow.

Application

The separators are manufactured according to the PN-EN 1825-1 standard and are CE marked. They are used in facilities such as:

restaurants
hotels and boarding houses
eateries
canteens
fast service bars
pubs
roadside inns
companies associated with the food industry, for example, meat processing plants, abattoirs, dairies, cheese dairies

Advantages of fat and starch separators

equipment manufactured according to European Standard PN-EN 1825-1
verified effectiveness ensured by the manufacturer and notified body
CE-marked products compliant with European Union directives,
possibility to install the units at large depths, in places of motor vehicle traffic, above ground level (free-standing), as well as at high ground water table,
made of polyethylene PE with a density of not less than 935 kg/m3 – low weight of the device at a relatively high strength, this material is resistant to corrosion, weather conditions, UV radiation and chemical compounds contained in the sewage,
easy to install (low unit weight)
easy to operate,
possibility of additional equipment (superstructures, automatic fat level sensors with signalling devices).

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Components of the JPR 502 separator:

monolithic PE polyethylene tank,
deflector,
separator chamber,
separation chamber,
siphoned drain,
ventilation,
screw-on cover ø320 with a seal (prevents penetration of unpleasant odours).

Use of the JPR 502 separator – small catering establishments where high performance equipment is not required:

pizza parlours,
fast-food bars,
roadside inns,
pubs.

Intended use of the JPR 502 separator:

designed for the separation of fatty substances contained in kitchen sewage in the immediate place of their formation. The specific structure and tight cover allow the separator to be installed near sinks and dishwashers.

MODEL	NOMINAL FLOW [L/s]	TOTAL CAPACITY [L]	DESILTER CAPACITY [L]	SEPARATOR CAPACITY [L] [mm]	DIMENSIONS
	LENGTH – L [mm]	WIDTH – W [mm]	HEIGHT – H [mm]	CONNECTION DIAMETER – DN [mm]	INLET HEIGHT – H1 [mm]	OUTLET HEIGHT – H2 [mm]
JPR 502	0,5	32	8	24	390	350	390	50	300	280

MODEL	NOMINAL FLOW [L/s]	SEPARATOR CAPACITY [L]	DIMENSIONS
	LENGTH – L [mm]	WIDTH – W [mm]	HEIGHT – H [mm]	CONNECTION DIAMETER – DN [mm]	INLET HEIGHT – H1 [mm]	OUTLET HEIGHT – H2 [mm]
JPR 1001	1,5	150	830	660	490	110	370	350
ST 4	2 to 4	400	830	990	1000	110	895	865
ST 10	6 to 10	1000	1405	990	1050	160	900	870
ST 15	15	1500	2080	990	1040	200	870	840
ST 20	20	2000	2830	990	1040	200	870	820
ST 25	25	2500	3400	990	1050	250	815	785
ST 30	30	3000	4080	990	1040	250	820	760

MODEL	NOMINAL FLOW [L/s]	DESILTER CAPACITY [L]	SEPARATOR CAPACITY[L] [mm]	DIMENSIONS
	LENGTH – L [mm]	WIDTH – W [mm]	HEIGHT – H [mm]	CONNECTION DIAMETER – DN [mm]	INLET HEIGHT – H1 [mm]	OUTLET HEIGHT – H2 [mm]
STO 2	1 to 2	200	200	830	990	1000	110	895	865
STO 3	3	300	600	1405	990	1050	110	895	865
STO 8	6 to 8	800	800	2080	990	1040	160	900	870
STO 10	10	1000	1000	3400	990	1050	160	900	870
STO 15	15	1500	1500	3400	990	1050	200	870	830
STO 20	20	2000	2000	4080	990	1040	200	870	830

MODEL	NOMINAL FLOW [L/s]	NOMINAL FLOW [L]	SEPARATOR CAPACITY [L]	PUMP CHAMBER CAPACITY [L]	DIMENSIONS
	LENGTH – L [mm]	WIDTH – W [mm]	HEIGHT – H [mm]	CONNECTION DIAMETER – DN [mm]	INLET HEIGHT – H1 [mm]	OUTLET HEIGHT – H2 [mm]
STOP 2	1 to 2	200	200	400	1620	990	1000	110	895	–
STOP 3	3	300	300	400	2190	990	1000	110	895	–
STOP 8	6 to 8	800	800	400	2870	990	1040	160	900	–
STOP 10	10	1000	1000	400	4190	990	1050	160	900	–
STOP 15	15	1500	1500	400	4190	990	1050	200	900	–
STOP 20	20	2000	2000	400	4870	990	1040	200	870	–

MODEL	NOMINAL FLOW [L/s]	SEPARATOR CAPACITY [L]	DIMENSIONS
	LENGTH – L [mm]	WIDTH – W [mm]	HEIGHT – H [mm]	CONNECTION DIAMETER – DN [mm]	INLET HEIGHT – H1 [mm]	OUTLET HEIGHT – H2 [mm]
SS 3	1 to 3	300	1405	990	1050	110	895	875
SS 6	4 to 6	600	1405	990	1050	160	890	870
SS 8	8	800	2080	990	1040	160	890	870
SS 10	10	1000	2080	990	1040	200	870	850

MODEL	NOMINAL FLOW [L/s]	SEPARATOR CAPACITY [L]	DIMENSIONS
	LENGTH – L [mm]	WIDTH – W [mm]	HEIGHT – H [mm]	CONNECTION DIAMETER – DN [mm]	INLET HEIGHT – H1 [mm]	OUTLET HEIGHT – H2 [mm]
STS 3	1 to 3	300	1405	990	1050	110	895	875
STS 6	4 to 6	600	1405	990	1050	160	890	870
STS 8	8	800	2080	990	1040	160	890	870
STS 10	10	1000	2080	990	1040	200	870	850

type of equipment	q_i[l/s]
n=1	n=2	n=3	n=4	n≥5
cauldron
	outlet 25 mm	1	0,45	0,31	0,25	0,21	0,2
outlet 50 mm	2	0,45	0,31	0,25	0,21	0,2
tilting cauldron
	outlet 70 mm	1	0,45	0,31	0,25	0,21	0,2
outlet 100 mm	3	0,45	0,31	0,25	0,21	0,2
sink
	40 mm trap outlet	0,8	0,45	0,31	0,25	0,21	0,2
50 mm trap outlet	1,5	0,45	0,31	0,25	0,21	0,2
sink
	without 40 mm trap	2,5	0,45	0,31	0,25	0,21	0,2
without 50 mm trap	4	0,45	0,31	0,25	0,21	0,2
dishwasher	2	0,6	0,45	0,4	0,34	0,3
tilting toaster (waffle iron)	1	0,45	0,31	0,25	0,21	0,2
foxed toaster	0,1	0,45	0,31	0,25	0,21	0,2
high-pressure or steam dishwasher	2	0,45	0,31	0,25	0,21	0,2
scraper	1,5	0,45	0,31	0,25	0,21	0,2
vegetable washer	2	0,45	0,31	0,25	0,21	0,2

type of equipment

q_i[l/s]

n=1

n=2

n=3

n=4

n≥5

cauldron

outlet 25 mm

0,45

0,31

0,25

0,21

0,2

outlet 50 mm

0,45

0,31

0,25

0,21

0,2

tilting cauldron

outlet 70 mm

0,45

0,31

0,25

0,21

0,2

outlet 100 mm

0,45

0,31

0,25

0,21

0,2

sink

40 mm trap outlet

0,8

0,45

0,31

0,25

0,21

0,2

50 mm trap outlet

1,5

0,45

0,31

0,25

0,21

0,2

sink

without 40 mm trap

2,5

0,45

0,31

0,25

0,21

0,2

without 50 mm trap

0,45

0,31

0,25

0,21

0,2

dishwasher

0,6

0,45

0,4

0,34

0,3

tilting toaster (waffle iron)

0,45

0,31

0,25

0,21

0,2

foxed toaster

0,1

0,45

0,31

0,25

0,21

0,2

high-pressure or steam dishwasher

0,45

0,31

0,25

0,21

0,2

scraper

1,5

0,45

0,31

0,25

0,21

0,2

vegetable washer

0,45

0,31

0,25

0,21

0,2

dimension of the collection points	q_i[l/s]
n=1	n=2	n=3	n=4	n≥5
DN 15	0,5	0,45	0,31	0,25	0,21	0,2
DN 20	1	0,45	0,31	0,25	0,21	0,2
DN 25	1,7	0,45	0,31	0,25	0,21	0,2

dimension of the collection points

q_i[l/s]

n=1

n=2

n=3

n=4

n≥5

DN 15

0,5

0,45

0,31

0,25

0,21

0,2

DN 20

0,45

0,31

0,25

0,21

0,2

DN 25

1,7

0,45

0,31

0,25

0,21

0,2

type of facility	V_m [L]
hotels	100,0
restaurants	50,0
staff canteens	5,0
hospitals	20,0
large 24/7 food establishments	10,0

type of facility

V_m [L]

hotels

100,0

restaurants

50,0

staff canteens

5,0

hospitals

20,0

large 24/7 food establishments

10,0

processing plant size	V_p [L]
*small – up to 5 GV per week**	20,0
*medium – 6 to 10 GV per week**	15,0
*large – 11 to 40 GV per week**	10,0

processing plant size

V_p [L]

small – up to 5 GV* per week

20,0

medium – 6 to 10 GV* per week

15,0

large – 11 to 40 GV* per week

10,0

type of facility	F
hotels	5,0
restaurants	8,5
staff canteens	20,0
hospitals	13,0
large 24/7 food establishments	22,0

type of facility

hotels

5,0

restaurants

8,5

staff canteens

20,0

hospitals

13,0

large 24/7 food establishments

22,0

type of facility	F
*small – up to 5 GV per week**	5,0
*medium – 6 to 10 GV per week**	8,5
*large – 11 to 40 GV per week**	20,0

type of facility

small – up to 5 GV* per week

5,0

medium – 6 to 10 GV* per week

8,5

large – 11 to 40 GV* per week

20,0

General information

The unit should be installed as close as possible to the source of pollution. Easy access to the separator and parts requiring maintenance should be provided for cleaning vehicles and those responsible for its regular servicing. Due to the low weight of the separators no special construction equipment is required during unloading and installation, which is a definite advantage. Only empty tanks should be manoeuvred using hoops, non-metallic belts.

Preparation for setting

Before setting the tank, the ground and water conditions at the site should be examined. The excavation for the unit should be of a size allowing for proper execution of installation works (with a minimum space of 50 cm between the side walls of the unit and the native soil). Make sure the trench is free of sharp objects which could cause mechanical damage to the unit (e.g. stones, debris). At the bottom of the excavation, a sand bed of at least 10 cm should be made, properly compacted and levelled for the correct positioning of the separator (if different types of soil are present at the bottom of the excavation, the thickness of the bed should be increased accordingly). In case of typical conditions, i.e. when the investment site has load bearing soils above the ground water level, the tank installation depth from the ground ordinate to the inlet spigot axis is less than 1 m, and the separator is not located in the area of motor vehicle traffic, then no special foundations/walled structures are required. If there are special conditions on site, then depending on the situation, the following should be done:

in low-bearing soils (clay and other cohesive soils, organic sludge, peat and other such types) – replace the soil with a new one around the walls of the tank and in the area above the tank, adequately protect the new soil against migration,
in case of high groundwater level – make a concrete slab at the bottom of the trench with anchors and fasten the tank with anchor belts,
if the unit is set at a great depth or if the unit is installed in a place of motor vehicle traffic (load class D400 – up to 40 tons) – make a relief plate of sufficient size according to the design assumptions, and a hatch of an appropriate class

If it is necessary to install the tank above ground level (free-standing tank), it is mandatory to enclose the separator with a retaining wall/designed structure to prevent deformation of the tank by balancing the liquid pressure on the tank walls.

Installation of the unit

Place the unit on the prepared ground, level the tank. If necessary, provide the necessary additional protection as designed. Then make sure that the inside of the separator is clean. Fill the machine in stages with clean water, 20-30 cm high, of the liquid column in the tank, while filling the space between the tank and the trench walls with stabilised sand in the proportion of 25 kg of cement per 1 m3 (compact until the appropriate values of the compaction index are reached). The next step is to connect the inlet, outlet and ventilation spigots. Check the tightness of the connections made. For hydrocarbon separators, raise the float, flood the unit with clean water until the bottom of the discharge pipe is level. Place the float on the liquid surface of the separator and check that it rises. Backfill the tank ensuring access to at least the minimum number of service hatches (if necessary secure with a D400 class hatch).

Principle of operation

Application

Advantages of fat and starch separators

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1 Inlet stub pipe

1 Inlet stub pipe

2 Primary settling tank (desilter)

2 Primary settling tank (desilter)

3 Fat separation chamber

3 Fat separation chamber

4 Suction valve

4 Suction valve

5 Outlet stub pipe

5 Outlet stub pipe

6 Ventilation

6 Ventilation

7 Separator cover

7 Separator cover

JPR 502

ST

STO

STOP

SS

STS

Optional equipment:

Possible adjustment

to the Customer’s needs

JPR 502

mini fat separator with desilter

Nominal flow of JPR 502 separator:

Components of the JPR 502 separator:

Use of the JPR 502 separator – small catering establishments where high performance equipment is not required:

Intended use of the JPR 502 separator:

Diagram of the JPR 502 mini fat separator with desilter

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ST

fat separator

Nominal flow range of the ST separator:

Components of the ST type separators:

Intended use of the ST type separators:

Use of the ST type separators:

Diagram of the JPR (JPR 1001) type fat separator

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STO

fat separator with desilter

Nominal flow range of the STO separator:

Components of the STO type separators:

Intended use of the STO type separators:

Use of the STO type separators:

Diagram of the STO (STO 2) type fat separator with desilter

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STOP

fat separator with desilter and pump chamber

Nominal flow range of the STOP separator:

Components of the STOP type separators:

Intended use of the STOP type separators:

Use of the STOP type separators:

Diagram of the STOP (STOP 2) type fat separator with desilter and pump chamber

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SS

starch separator

Nominal flow range of the SS type separator:

Components of the SS type separators:

Intended use of the SS type separators:

Use of the SS type separators:

Diagram of the SS (SS 3) type starch separator

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STS

fat and starch separator

Nominal flow range of the STS type separator:

Components of the STS type separators:

Intended use of the STS type separators:

Use of the STS type separators:

Diagram of the STS (STS 8) type starch separator

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Check also

Selection

Appendix B available below:

General information

Preparation for setting