Automatic monitoring station of groundwater quality-Groundwater Level Meter_Groundwater Sampling

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AML131

Automatic monitoring station of groundwater quality

Function: Groundwater quality automatic monitoring station adopts overall integrated design, which can simultaneously measure groundwater temperature, water level, pHconductivity, redox potential, turbidity, nitrate nitrogen, ammonia nitrogen, TOC, total phosphorus, total nitrogen, groundwater velocity and direction, etc.

Advantage: Groundwater sampling for 3 minutes, and the pollution inlet instrument without cross interference of water samples can not do it.

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Amlsong@AMLgroundwater.com

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INTRODUCTION

System parameters

Technical parameters of water level

Test:	Pressure method
Measuring range:	0~100m above
Accuracy:	≤ 0.25% full range
Distribution rate:	≤0.01m

Technical parameters of ammonia nitrogen

Test:	Lower limit of determination:
Measurement range:	0~20mg/L
Resolution:	≤0.01mg/L
Accuracy:	≤±5%
Lower limit of determination:	≤0.1mg/L

Technical parameters of cyanide

Measurement:	isonicotinic acid-barbituric acid spectrophotometry
Measuring range:	0 ~ 0.5 mg/L (more ranges can be expanded)
Repeatability:	≤5%
Accuracy:	±5%
Zero drift:	±5%

Technical parameters of redox potential

Test:	Electrode method
Measurement range:	-999 ~ 999mV
Huai degree:	≤±20mv
Resolution:	≤1mV

Technical parameters of dissolved oxygen electrode

Determination:	Fluorescence method
Zero drift:	±0.2mg/L
Measurement range:	0～20mg/L
Range drift:	±0.2mg/L
Accuracy:	≤0.15mg/L
Indication error:	±0.3mg/L

Technical parameters of chloride

Measurement:	Ion selective electrode method
Measurement range:	0~500mg/L (expandable)
Accuracy:	±5%
Repeatability:	≤5%

Technical parameters of water temperature

Test:	Electrode method
Measuring range:	-5℃~50'℃
Accuracy:	≤±0.5'℃
Distribution rate:	≤0.1℃

Technical parameters of permanganate

Measurement:	Potassium permanganate oxidation-titration method
Measurement range:	0~20mg/L; 20 ~ 200mg/L (scalable range)
Indication error:	±5%
Zero drift:	±3%F.S
Range drift:	±3%F.S

Technical parameters of sulfate

Measurement:	Spectrophotometry
Measurement range:	0~1000mg/L (expandable)
Accuracy:	±10%
Repeatability:	≤5%

Technical parameters of turbidity

Test:	Optical method
Measurement range:	0~3000NTU
Accuracy:	≤±5%
Resolution:	<1.0NTU

Technical parameters of nitrite

Determination:	N-(1-naphthyl)-ethylenediamine spectrophotometric method
Measurement range:	0 ~ 2/10/50 mg/L (expandable)
Lower quantitative limit:	0.2 mg/L
Indication error:	±5%
Zero drift:	±3%

Technical parameters of nitrate nitrogen

Measurement:	Spectrophotometry
Measurement range:	0~50mg/L (expandable)
Accuracy:	±5%
Zero drift:	±5%

PH technical parameters

Test:	Glass electrode method
Measurement range:	0~14PH
Accuracy:	≤±0.2pH
Resolution:	≤0.01PH

Technical parameters of heavy metal-arsenic

Measurement:	Voltammetry or spectrophotometry
Measurement range:	0~2mg/L (expandable)
Accuracy (indication error):	±10%
Zero drift:	±5%
Range drift:	±10%

Technical parameters of anionic surfactants

Measurement:	Spectrophotometry
Measuring range:	0~5mg/L, adjustable
Accuracy:	±10%
Repeatability:	≤5%

Technical parameters of nitrate nitrogen

Test:	Ion selective electrode method or optical method
Measurement range:	0 ~ 10mg/L (or 0 ~ 100mg/L)
Accuracy:	≤±0.1 mg/L (or±5)
Distribution rate:	≤0.1mg/L
Lower limit of determination:	≤2mg/L
Zero drift:	≤±5%

Technical parameters of heavy metal-hexavalent chromium

Measurement:	Spectrophotometry
Measurement range:	0~1.0 mg/L(expandable)
Accuracy:	±5%
Zero drift:	±5%

Technical parameters of iodide

Measurement:	Ion selective electrode method
Measuring range:	0.0 ~ 0.5 mg/L (expandable)
Accuracy:	±5%
Repeatability:	±5%

Technical parameters of conductivity

Test:	Electrode method
Measurement range:	0～200mS/cm
Accuracy:	≤±2% of readings
Resolution:	≤0.01mS/cm

Fluoride technical parameters

Analysis method:	Ion selective electrode method
Measuring range:	0~5mg/L(extensible)
Accuracy:	±10%
Zero drift:	±5%
Precision:	≤5%
Range drift:	±5%

Technical parameters of velocity and direction

Measurement:	Particle image recognition measurement technology
Flow velocity measurement range:	0~30mm/s
Accuracy of velocity measurement:	0.01um/s
Azimuth measurement accuracy:	±1°

System overview

Aimoli groundwater quality automatic monitoring station adopts overall integrated design, which can simultaneously measure groundwater temperature, water level, pHconductivity, redox potential, turbidity, nitrate nitrogen, ammonia nitrogen, TOC, total phosphorus, total nitrogen, groundwater velocity and direction, etc.

There are three main types of Aimoli groundwater temperature and water level series

AML133 Groundwater Telemetry Level Gauge;

AML135 Automatic Groundwater Level and Temperature Recorder;

AML136 Groundwater Level and Temperature Conductivity Recorder:

There are three types of Aimoli groundwater quality automatic monitoring station

AML130 Groundwater Quality Automatic Monitoring Micro Station;

AML131 Groundwater Quality Automatic Monitoring Outdoor Small Station;

AML132 Groundwater Quality Automatic Monitoring Station;


AML130 groundwater quality automatic monitoring micro-station	AML131 underground water quality automatic monitoring outdoor small station	AML133 groundwater telemeter	AML135 Automatic groundwater level temperature recorder	AML136 groundwater level conductivity recorder

Among them, the base of 131 groundwater quality automatic monitoring station 1m*1.8m(covers an area of 1.8 square meters), the chassis has a grounding device, the height of 1.9m (the top with lifting ring, awning, easy to disassemble and move), the instrument with lightning rod, surge protector, outdoor installation can be equipped with protective guardrailing, the instrument material is made of high-strength stainless steel, It has the function of rain and corrosion prevention and built-in constant temperature air conditioning to ensure the normal operation of the internal parameters of the chassis under constant temperature and humidity. The instrument has flame retardancy, meets the requirements of (GB/T5196.7) experiment A, and is suitable for outdoor use.

System combination:

The system is composed of station building, sampling system, water distribution unit, preprocessing unit, analysis instrument unit, control unit, data acquisition and transmission unit, auxiliary unit, etc. The system has scalability.

Six advantages

● Groundwater sampling 3 minutes to water, and the water sample is not cross-interference pollution, the import instrument can not do

● Groundwater flow direction measurement, adapt to clean water, intermediate water, turbidity water, import instrument can not do

● The non-contact well water cleaning detection probe is different from the contact cleaning in the same industry

● Non-fixed, multi-level water level detection, different from peer fixed water level detection

● Integrated cable one down the well

● The sampling head is resistant to pressure and corrosion

Scope of application

National groundwater environmental quality assessment points

Groundwater pollution control pilot area

Chemical production enterprise

Tailings pond

Hazardous waste disposal site

The landfill

Chemical industry gathering area

Mining area

Key pollution sources around enterprises

Groundwater type drinking water source and its recharge area

Measurement index

Automatic water quality monitoring indicators: According to the "groundwater quality Standard" (GB/T14848), the indicators required for long-term groundwater monitoring Wells are :pH, electrical conductivity, dissolved oxygen, ammonia nitrogen, nitrate, nitrite, volatile phenol, cyanide, arsenic, chromium (hexavalent), lead, gas, cadmium, iron, manganese, permanganate index. For water quality problems in different regions, special component tests can be added to reflect the background components and groundwater pollution characteristics in the region.