Equipment quality appraisal for dust control projects

In recent years, urban construction has accelerated. High-rise buildings have risen from the ground, and the city has become a large construction site. In addition to noise pollution, a large number of construction sites also cause dust pollution that cannot be underestimated. Data show that dust pollution is one of the three major sources of urban air pollution. When pollution is severe, its contribution to PM2.5 can reach 30%. Dust control is urgent and cannot be delayed.

Dust control project equipment refers to equipment that can reduce dust generated on construction sites such as construction and demolition projects, protect the environment and reduce pollutant emissions. Dust equipment is widely used in urban construction, construction projects, highway construction, bridge projects, airports and other scenarios. Its function is to purify the air and protect human health and a beautiful environment.

Zhongke Testing and Appraisal Institute can provide equipment appraisal services for dust control projects and make accurate appraisals in terms of product design analysis, load analysis and product quality analysis.

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Dust Control Project Equipment

1. Fan: can be used to extract or push air and dust to remove or collect it from the work area.

2. Dust collector: can be used to collect and filter dust and release clean air back into the environment.

3. Air filter: Can be used to capture tiny particles in the air, such as dust, pollen, smoke, etc., to provide healthier indoor air.

4. Sprinkler system: Control the dust and scattering of dust by spraying water or chemicals.

05. Rotor type dust cleaner: can be used to blow and remove accumulated dust on the filter to keep it clean and efficient.

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26. Dust cover: used to cover production equipment to limit the outward spread of dust, thereby reducing the dust concentration in the environment.

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47. Duct system: Used to transport dust from one area to another through air flow ducts, making it easier to control and handle.

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GB/T 13931-2017 Electrostatic precipitator performance test method

GB 15577-2018 Dust explosion-proof safety regulations

GB/T 32154-2015 Electric bag composite dust collector performance test method

GB/T 40514-2021 Electrostatic precipitator

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A company of the applicant signed a "Construction and Installation Project Contract" with an environmental protection equipment Co., Ltd. of the respondent. The respondent shall carry out design, supply, construction, installation, commissioning, acceptance, training, operation and maintenance, after-sales service and other matters for the dust control project at the chemical material yard involved.

Later, the two parties disputed over the performance indicators of the equipment involved, the dust control project method adopted, and whether the management method of the equipment involved could meet the user's acceptance conditions.

was sued by both parties to a people's court over a contract dispute. The court entrusted our unit to evaluate the quality of the equipment involved in the dust control project in the mechanized material yard of the iron smelting plant.

Identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information, on-site investigation and inspection data, and inspection and testing data of the "dust control project" involved, and made the following quality analysis opinions:

01. According to the relevant information provided by the client, there is no test data for "job dust concentration". The "import concentration value" of the two test reports is far lower than the 500mg/m³ cutoff indicator in the "Technical Agreement". The test report data shows that the "dust removal efficiency" of the equipment involved did not meet the requirements stated in the "Technical Agreement" and the nameplate of the equipment involved.

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22. The monitoring point settings of the equipment involved in the case do not meet the standards and the requirements of the "Technical Agreement".

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43. When the equipment involved and the belt conveyor were turned on, dust could be seen on the scene.

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64. The dust concentration at the outlet of the sampling point and the dust concentration at the post do not meet the requirements of the "Technical Agreement" and relevant standards.

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85. The method used by the equipment involved in the case did not adopt a "centralized treatment" method for dust control at dust points, and did not meet the requirements of relevant standards.

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06. In outdoor or semi-enclosed environments, low operating temperatures can easily cause the "water circulation system" to fail to work or the atomized droplets to freeze during operation, which will increase system resistance and reduce dust removal efficiency. The equipment involved cannot be guaranteed to maintain normal operation at ambient temperatures of -20°C to 50°C.

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