Home > Product > non-point pollution source field
 
       
 
¡€ When you see withered plants or blackened soil around road run-off outlet it is due to harmful substances in road run-off
¡€As the domestic roads are constructed of impermeable materials such as asphalt or concrete, they can cause strong first flush even at a small scale of rainwater and pollutant concentration is also high.
¡€ Road runoff includes not only miniscule particles but also debris such as fallen leaves, pieces of vinyl, wood splinters, plastics, cigarette butts, waste paper, thereby causing clogging of road drainage
¡€Currently installed storm-water inlets only serve to remove rainwater, but it should have a function to primarily remove particles and foreign matters in line with the increasing trend of mandatory reduction of road run-offs pollutant.
¡€In industrialized countries such as the US, Japan, Australia, and Canada, they install pilot-scale and real-scale treatment devices for road run-offs pollutant control technologies to assess their effectiveness and accumulate technologies.
¡€Presently in Korea, there is no research on road run-offs pollutant reduction method utilizing road storm-water inlet so it is urgent we develop road run-offs pollutant reduction device for storm-water inlet that suits the domestic conditions.
¡€Though it is simple in structure, there is no independent technology for road run-offs pollutant reduction device for storm-water inlet in Korea. With the reinforced legal regulations due to the introduction of the total pollution load management system, it is likely to rely on imported products 		 
 
Range
 Dissolvable heavy metal proportion
 Particulate heavy metal proportion
Pb(%)
 Cu(%) Fe(%) Cr(%) Pb(%)
 Cu(%)
 Fe(%)
 Cr(%)
Min 5.78
 5.19 0.14 11.07 50.24 54.31 97.68 50.00
Max
 49.76 45.69 2.32 50.00 94.22 94.81 99.86 88.93
Avg
 34.07 20.47 0.60 29.98 65.93 79.53 99.40

70.02

 
 

 
Composition of device
Consist of Vortex influent, Overflow weir, Screen tank, Coarse matter screen, Settling fine matter screen Trap, Filter part (optional), Upper influent, Inflow pump, recirculation pump, agitator, Particle injection device, etc.

 

 
Screen Trap Device for treating particulates in road run-offs
 

Outcomes of Screen Trap¡¯s road run-offs removal experiment: 150-300§­ Sand

SS removal efficiency by surface loading rate variation

Sample V¡£(m©ø/m©÷/day) SS (mg/L) SS Removal %
ST-1-Influent   293  
ST-O-1
 227.0 88 70.0
ST-O-2 630.6 178 39.2
ST-O-3 810.7 163 44.4
ST-O-4 1418.8 123.5 57.8
 

 

 

 

 

 

 

Screen Manhole Operation Outcome: GAC

Media: GAC (1kg/100L)
Sample V¡£(m©ø/m©÷/day) SS(mg/L) E(SS)%
MS-1-IN1
   493  
MS-1-1 280 73 85.2
MS-1-2 412 128 74.0
MS-1-3 1048 113 77.1
MS-1-4 1862 169 65.8
Min 280 73 66
Max 1862 169 85
Mean 901 121 76
 

 
Screen Manhole Operation Outcome: Silt Soil

Media: Silt Soil (1kg/80L)¡¡
150-300§­
Sample V¡£(m©ø/m©÷/day) SS(mg/L) E(SS)%
MS-2-IN1
   293  
MS-2-1 832 158 46.1
MS-2-2 704 178 39.2
MS-2-3 685 163 44.4
MS-2-4 956 169 42.3
MS-2-5 517 114 61.1
Min 517 114 39
Max 956 178 61
Mean 739 156 47
 
Screen Manhole Operation Outcome: Paper
Media: Paper(2kg/100L)

Sample No.

 V¡£(m©ø/m©÷/day) SS(mg/L) E(SS)%
MS-3-IN1
   348  
MS-3-1 325 23 95.3
MS-3-2 393 92 81.4
MS-3-3 688 127 74.3
MS-3-4 1117 136 72.5
MS-3-5 1430 154 68.9
Min 325 23 69
Max 1430 154 95
Mean 791 106 78
 

 

Screen Manhole Operation Outcome: Paper

Media: Perlite(500g/100L)

Sample No

 V¡£(m©ø/m©÷/day) SS(mg/L) E(SS)%
MS-4-IN1
   251  
MS-4-1 250 73 85.2
MS-4-2 351 122 75.4
MS-4-3 458 127 74.3
MS-4-4 688 154 56.0
MS-4-5 1052 169 45.4
Min 250 73 45
Max 1052 169 85
Mean 560 129 67
 

 
- Alternative to road run-off management technology
- Road run-off control technology is a new field of research currently under development in industrialized countries. It is
  expected that the technology accumulation would result in not only research outcome accumulation but also economic
   advantages through commercialization
- If this project is performed successfully, it is a new conceptual attempt that will reduce harmful pollution loads from roads and
   contribute to water quality improvement in rivers thereby laying a foundation for future studies
- It would maximize business profits through commercialization and business through compact structure design in various
   capacity and standardization
- Research results of this project will be presented in domestic and overseas professional journals and promoted by presenting
   relevant papers
- Secure independent technology through patent application
 
Screen Trap
- Road with heavy daily traffic
- Expressway, National roads

 
Screen Manhole
- General roads
- parking lots
- Large building complex

 
Manhole Trap
- Urban road
- Expressway, National roads

 
 
Research and development have been carried out in accordance with the purpose specified in experiment plan and experiment method.
There were systematic performance reviews through analysis of road non-point pollution source, product idea creation, lap experiments
Research and development efforts were directed to producing sample product to commercialize. The resulting product was ideal for the Korean storm-water inlet installation and modification, In the future, the company hopes to accumulate more performance data and ways to improve the current version of product through cooperation with research institutes and participating companies. It also plans to set up measures to mass-produce commercialized products that meets key clients¡¯ standard sizes.