PROBLEMS OF THE CONVENTIONAL CATCH BASIN SYSTEM

The drainage holes are blocked by garbage and not cleaned, impeding the flow of water. Every time it rains, it overflows onto the road. I just hope the drainage system can be widened to ensure proper water flow. The issue of waterlogging and stagnant water causing foul odors persists every time it rains due to the inadequate drainage capacity. I think more research should be conducted to improve water circulation so that the streets won’t be flooded on rainy days.

The catch basins clogged with garbage is the biggest concern of the residents. From my perspective, I hope that the government authorities can take action to ensure proper water drainage so that we do not have to face this problem anymore.

Every time it rains heavily, the water cannot drain quickly enough, causing the roads to turn into rivers. Vehicles passing by cause water to overflow into the shops. It is impossible to avoid foul odors and garbage due to vehicles on the roads pushing water in.

The garbage is pushed back up and floating on the road. As a result, every time it rains, the water becomes black and very stinky.

I have to cover the catch basin with items like sponges and nets to reduce the foul odor because my customers hate that smell when they come to my shop.

People leave garbage outside, so every time it rains, garbage flows down and clogs the catch basins. This is a cause of stench and diseases.

I don’t want to take my grandchild for a walk because because the foul smell from the nearby catch basin in front of our house is quite unpleasant. It is very smelly in both sunny season and rainy season.

I’ve been living here for 20 years. Every afternoon, the nearby catch basin becomes very stinky, I have to cover it with a tarpaulin. I and my neighbours really want to find a solution to eliminate the foul smell coming from the catch basin.

When it rains, the road gets flooded, the water stagnates, and the bad smell rises. It is very difficult for the local residents to do business. In addition, in the rainy season, there are a lot of mosquitos and larvae.

Restaurants or coffee shops can face customer hesitation if there is a foul odor coming from nearby catch basins.

When the rainy season comes, the water can never drain away because people have blocked the catch basins. With this newly excavated catch basin, the water can now flow properly during rainfall. Previously, the rainwater couldn’t drain into the catch basin. All the catch basins from the monument down to Tuong Van street have been covered by different materilas because they smell so bad that no one can stand them.

After the rain, the water did not drain well, the smell was very unpleasant, I had to cover the catch basin with the rubber sheets.

The functions of water collection, odor prevention and mosquito control of the conventional catch basin system installed in the city have not been effective. Moreover, there are other external factors such as the fact that people arbitrarily cover and litter in the catch basins, catch basins are not cleaned regularly. All of these factors lead to many problems affecting the living environment and community health. In particular, many roads are flooded in the rainy season and smelly in the dry season, flies and mosquitoes live and breed in the catch basins.

All urban areas in Vietnam have used the conventional catch basin system with a net to prevent foul odors. However, they are usually blocked because people dump waste and cleaning workers sweep all kinds of garbage into the catch basins. Many people put inorganic waste such as beer bottles or plastic bags, which cannot be decomposed and stuck on the catch basins. Sometimes the cleaning workers or someone else breaks the odor-blocking net to unclog the catch basins. As the result, they can neither block the smell nor block the garbage, and then the garbage goes down into the catch basins causing a blockage.

The drainage systems in urban areas in Binh Thuan province are used for both rain water and domestic wastewater at the same time. The previously invested water collection system primarily includes a network of pipes (concrete ditches, concrete pipes, etc.), catch basins and sumps. The sump is designed in cleft-shape to prevent odors from spreading from the catch basin to the outside. However, this design is only effective when the sump is filled with water. In dry season, the sumps are not filled with water, so they are unable to prevent the foul odor from the catch basins from spreading outside. This situation affects the residents living along the roads. Some households have blocked the sump covers to avoid foul odor from the catch basins.

The stagnation of catch basins is caused by the accumulation of the dead bodies of animals, plants and some household waste. During this process, these organisms and plants contribute to immediate factors that can pollute water sources. People are affected by the unpleasant smell from the decomposed organisms. Moreover, during the decomposition of plant and animal remains, harmful substances can be generated, which may pollute underground water sources. Another issue is the stagnant water which is a breeding environment for disease-causing insects such as flies and mosquitoes. Certain mosquito species, like the Culex tritaeniorhynchus group, that grow in this environment transmit a number of diseases such as filariasis and Japanese encephalitis.

Environmental pollution is currently a pressing issue for Vietnam in general and Binh Duong province in particular. Water, soil, and air environments are all facing severe pollution, greatly impacting human life. Environmental pollution is primarily caused by human activities or natural factors. A common cause of pollution is drowning and foul odors emanating from the conventional catch basins in densely populated residential areas.