Industrial recirculating cooling water water quality testing instrument for laboratory

The synopsis of project
The ERUN series industrial recirculating cooling water water quality testing instrument for laboratory developed and produced by Erun Group is a solution designed in accordance with the "GB/T 50050-2017 Code for design of industrial recirculating cooling water treatment". The main detectable parameters of the water quality testing instrument of recirculating water laboratory include pH value (25 °), conductivity, turbidity, suspended solids, total hardness, total alkalinity, chloride ions, total iron, total heterotrophic bacteria, copper ions, oil content, free chlorine, NH3-N, COD, etc. The industrial cooling water analyzer is suitable for testing the water quality of industrial recirculating cooling water in fields such as steelmaking, synthetic ammonia, thermal power plants, casting, steel rolling, blast furnaces, converters, and petroleum smelting using indirect open cooling systems, indirect closed cooling systems, and direct cooling systems.
The contents of project

1、Routine testing items of industrial recirculating cooling water water quality testing instrument for laboratory:


Serial No.

Items

Indirect open cooling system

Indirect closed cooling system

Direct cooling system

1

pH(25℃)

Once a dayOnce a dayOnce a day

2

conductivity

Once a day

Once a day

Spot-check

3

turbidity

Once a day

Once a day

Once a day

4

suspended solids

Once to twice a month

Not tested

Once a day

5

total hardness

Once a day

Once a day or spot-check

Once a day

6

calcium hardness

Once a day

Once a day or spot-check

Once a day

7

total alkalinity

Once a day

Once a day or spot-check

Once a day

8

chlorine ions

Once a day

Once a day or spot-check

Once a day or spot-check

9

iron

Once a day

Once a day

Not tested

10

heterophic bacteria

Once a week

Once a day

Not tested

11

copper

Once a weekSpot-checkNot tested

12

oil

Spot-checkNot testedOnce a day

13

drug concentration

Once a dayOnce a dayNot tested

14

residual chlorine

Once a dayDepending on the medicationNo need for testing

15

NH3-N

Once a weekSpot-checkNot tested

16

COD

Once a week

Not tested

Not tested

Note

a、Copper analysis is only applicable to recirculating cooling water system containing copper materials。

b、Oil analysis is only applicable to the direct cooling system of steelmaking and rolling equipment; The intermittent cooling open system of the refining unit is operated once a day.

c、NH3-N testing is only applicable to recirculating cooling water system with the possibility of ammonia leakage and the use of recycled water as supplementary water.

d、COD conducts spot checks on the direct cooling system of steelmaking and rolling equipment, and conducts daily analysis on the indirect open cooling system of refining equipment.


2、Technical Parameters of industrial recirculating cooling water water quality testing instrument for laboratory:


Serial No.

Items

Measuring range

Unit

Maximum deviation

Analysis methods

Standard basis

1

pH(25℃)

0.00-14.00

——

0.1±0.1

Glass electrode method

GB/T 6904

2

conductivity

0.00µS/cm-199.9mS/cm

mS/cm

±1.0% (F.S.)

Potassium chloride electrode method

GB/T 6908

3

turbidity

0-400

NTU

≤2%(F.S.)

Scattering method-formazine standard

GB/T 12151

4

suspended solids

5-1000

mg/L

≤2%(F.S.)

Light scattering method

——

5

total hardness

0.1-500.0

mg/L

5%(F.S.)

EDTA acid chrome blue K method

GB/T 6909

6

total alkalinity

0-1000

mg/L

5%(F.S.)

Potentiometric titration

GB/T 15451

7

chlorine ions

0.20-100.0

mg/L

5%(F.S.)

Ammonium thiocyanide titration method

GB/T 29340

8

iron

0.0-10.0

mg/L

5%(F.S.)

1,10-phenanthroline spectrophotometry

GB/T 14427

9

heterophic bacteria

——

pcs/L

——

Plate counting method

——

10

copper

0.02-10.0

mg/L

5%(F.S.)

Sodium diethyldithiocarbamate spectrophotometry

GB/T 13689

11

oil

0~900.00

mg/L

RSD<0.6%

Infrared photometry

GB/T 16488

12

residual chlorine

0.02-10.00

mg/L

5%(F.S.)

Titrimetric method using N,N-diethyl-1,4-phenylenediamine

HJ 585

13

NH3-N

0.02-250.00

mg/L

3%(F.S.)

Nessler's reagent spectrophotometric method

HJ 535

14

COD

5-20000

mg/L

5%(F.S.)

Dichromate method

GB 11914


3、List of industrial recirculating cooling water water quality testing instrument for laboratory:

Serial No.

Part Number

Name

Items

Pictures

1

ERUN-ST-MU97

Laboratory benchtop multi-parameter water quality analyzer

pH(25℃)conductivityturbiditysuspended solidstotal hardnesstotal alkalinitychlorine ionsironcopperresidual chlorineNH3-N、COD

Laboratory benchtop multi-parameter water quality analyzer of industrial recirculating cooling water


2

ERUN-ST-OD380

Laboratory benchtop infrared spectrophotometer

oil

Laboratory benchtop infrared spectrophotometer of industrial recirculating cooling water


3

ERUN-SP-MD690

Portable water quality microbiological tester

heterophic bacteria

Portable water quality microbiological tester of industrial recirculating cooling water

Note:Analysis parameter items can be flexibly combined and selected according to the customer's own needs.


4、Other parts list of industrial recirculating cooling water water quality testing instrument for laboratory:

Serial No.

Name

Specifications

Quantity

1

Colorimetric tube

Ф25×95mm

10

2

Colorimetric tube

Ф16×110mm

10

3

Test tube rack

White

2

4

Pipette gun

Minimum graduation 0.1mL

1

5

Cuvette

50×25×70mm

2

6

Lens hood

Black

1

7

total hardness reagent

100 times/set

1

8

total alkalinity reagent
100 times/set

1

9

chlorine ions reagent50 times/set

1

10

iron reagent50 times/set

1

11

copper reagent100 times/set

1

12

residual chlorine reagent100 times/set

1

13

NH3-N reagent
200 times/set

1

14

COD reagent

200 times/set

1

15

benchtop multifunctional CNC digestion instrument

ERUN-DIG-16B

1

16biochemical incubatorERUN-SHX1001
17temperature electrode/1
18pH composite electrode/1
19conductivity electrode/1
20chargers and charging cables/1
21USB cable/1
22instruction manual/1
23

Product certificate

/Product warranty card

/1

Note:Analysis parameter items can be flexibly combined and selected according to the customer's own needs.

Application Products
Classic Case
+8602985515255
yrhb@erunwas.com