Laboratory water quality analyzer of urban and rural drinking water plant

The synopsis of project
The ERUN series laboratory water quality analyzer of urban and rural drinking water plant developed and produced by Erun Group for urban and rural centralized water supply plant is a solution designed with reference to the "Sanitary Standard for Drinking Water Plant". The urban and rural water station drinking water testing instrument include turbidity, chromaticity, visible substances, CODMn, aerobic bacterial count, total coliforms, thermotolerant coliforms, residual chlorine. The laboratory water quality analyzer of centralized water supply plant is suitable for testing the quality of drinking tap water in urban and rural areas such as large-scale water supply projects and small-scale centralized water supply projects.
The contents of project

1、Analysis items and testing frequency of urban and rural centralized water supply water quality:

Types of waterAnalysis itemsDaily water supply capacity (10000 cubic meters)
≥50
<50 - ≥10<10
Testing frequencyTesting frequencyTesting frequency
Raw water

turbidity, chromaticity, visible substances, CODMn

Once a day
Once a dayOnce a day
aerobic bacterial count, total coliforms, thermotolerant coliformsOnce a weekOnce a weekOnce every two weeks
Tap waterturbidity, chromaticity, visible substances, CODMn, aerobic bacterial count, total coliforms, thermotolerant coliforms, residual chlorineOnce a dayOnce a dayOnce a day
Terminal tap waterturbidity, chromaticity, visible substances, CODMn, aerobic bacterial count, total coliforms, thermotolerant coliforms, residual chlorineTwice a monthTwice a monthTwice a month

1、If total coliform bacteria are detected in the factory water and the water at the end of the pipeline network, further testing of fecal coliform bacteria is required.

2、The inspection items and frequency of harmful substances outside this table shall be determined by the local health administrative department and water supply unit according to specific circumstances.


2、National standard for water quality limits of urban and rural centralized water supply water quality:

Serial No.ItemsLimiting valueStandard basis
1turbidity1 NTU

GB 5749-2022

Standards for drinking water quality

2chromaticity15 PCU
3CODMn3 mg/L
4aerobic bacterial count100 MPN/mL or CFU/mL
5total coliformsShould not be detected
6thermotolerant coliformsShould not be detected
7residual chlorine

Contact time with water≥30 min

Tap water and terminal tap water≤2 mg/L

Margin of tap water≥0.3 mg/L

Margin of terminal tap water ≥0.05 mg/L


3、Technical parameters of laboratory water quality analyzer of urban and rural drinking water plant:

Serial No.

Items

Measuring range

Unit

Maximum deviation

Analysis methods

Standard basis

1

turbidity

0-400

NTU

≤2%(F.S.)

Scattering method - Formazine standard

GB/T 5750.4

2

chromaticity

5-500

PCU

3%(F.S.)

Platinum cobalt standard colorimetric method

GB/T 5750.4

3

CODMn

0.00-10.00

mg/L

0.2 or 5%

Acidic potassium permanganate spectrophotometric method

GB/T 5750.7

4

aerobic bacterial count

——

pcs/L

——

Plate count method

GB/T 5750.12

5

total coliforms

——

pcs/L

——

Multi tube fermentation method

GB/T 5750.12

6

thermotolerant coliforms

——

pcs/L

——

Multi tube fermentation method

GB/T 5750.12

7

residual chlorine

0.02-10.00

mg/L

5%(F.S.)

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

GB/T 5750.11


4、Products list of laboratory water quality analyzer of urban and rural drinking water plant:

Serial No.

Part Number

Name

Items

Pictures

1

ERUN-SP-M9000

Portable multi-parameter water quality tester

turbidity, chromaticity,  CODMn,  residual chlorine

城乡集中式供水单位水质化验室台式多参数水质测定仪


2

ERUN-SP-MD690

Portable water quality microbiological tester

aerobic bacterial count, total coliforms, thermotolerant coliforms

城乡集中式供水单位水质化验室便携式水质微生物检测仪

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


5、The part list of laboratory water quality analyzer of urban and rural drinking water plant:

Serial No. 

Name

Specifications

Quantity

1

Colorimetric tube

Ф25×95mm

10

2

Test tube rack

White

2

3

Pipette gun

Minimum graduation 0.1mL

1

4

Cuvette

70×25×70mm

2

5

Lens hood

black

1

6

CODMn reagent

100 times/set

1

7

residual chlorine reagent100 times/set

1

8water bathConstant temperature, resolution 0.1 ℃1
9biochemical incubatorERUN-SHX1001
10temperature electrode/1
11pH composite electrode/1
12chargers and charging cables/1
13USB cable/1
14product manual/1
15

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