Taichung City Subsidized for Dongda River Water Environment Improvement


The EPA is subsidizing the Dongda River Water Environment and Neighboring Area Environmental Improvement Project. Hosted by EPA Deputy Minister Hung-Teh Tsai and Taichung City Mayor Shiow-yen Lu, the groundbreaking ceremony marked the rebirth of Dongda River.

As part of the third phase of the Forward-looking Infrastructure Development Program, the Fazi River Water Environment Improvement Plan - Dongda River Water Environment and Neighboring Area Environmental Improvement Plan has been allocated a budget of NT$300 million, of which NT$210 million is subsidized by the EPA. The EPA plans to install an underground gravel contact oxidation treatment facility with a daily water treatment capacity of 10,000 metric tons at the area downstream of Tunghai Night Market. Combined with the existing in-situ water treatment facility that can treat up to 2,000 metric tons daily, all upstream wastewater can be intercepted for treatment, which will significantly reduce the water pollution in Dongda River.

Dongda River, situated in Xitun District, Taichung City, is one of the major branches of Fazi River which flows through the Tunghai Night Market and Taichung Industrial Park. With the growing population and the rising industrial and business development in the region, the water quality of Dongda River and the general environment of the area have been gradually deteriorating over time due to increased human activity. The water quality of the river is significantly affected by the rainwater runoff from both the industrial park and Tunghai University, as well as by wastewater discharge from households and businesses along the riverbanks.

To foster eco-friendly river environments, the Taichung City Government has been actively reviewing the environmental planning for Fazi River and its neighboring areas, and has collaborated with the EPA on the Dongda River Remediation Plan since 2015. This time, as part of the Forward-looking Infrastructure Development Program, the remediation plan will enter the second phase of implementation to further improve river water quality. Since the target area covers the campus of Tunghai University, the university is also participating in the formulation and design aspects of the plan to create superior water environment education venues for its students.

Since the wastewater discharged from the night market upstream contains a large amount of fatty matter, the EPA is strengthening the grease removal capacity of the pre-treatment unit while also enhancing the treatment efficiency of the existing facility. Influent wastewater first goes through the process of screening, desilting, and grease removal. Then, it is transferred to an underground gravel contact oxidation treatment facility for purification before going back to Dongda River to supplement the base flow, and is used for environmental landscaping of the surrounding area. The River Pollution Index is expected to move from being classified as “seriously polluted” to “lightly polluted” after the project is implemented. Some of the purified water will also be discharged to a creek in Tunghai University to create a river park and provide more recreational space for the public.  

The EPA is devoted to water environment improvement works and has provided the Taichung City Government with NT$800 million in subsidies for improvements, including: pollution source investigation and control, river patrols, pollution emergency response, pollution source total quantity control, and river remediation of Liu-Chuan Canal and Wuqi River. As a part of the Forward-looking Infrastructure Development Program, a subsidy of NT$2 billion has been approved for the Taichung City Government for river remediation and water quality improvement. 

Excerpt from Environmental Policy Monthly, 23 (3)

Environmental Protection Administration, R.O.C.(Taiwan)
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