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1.4 Rural wastewater treatment case in typical counties
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1.4 Rural wastewater treatment case in typical counties

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Since 2013, Kaihua County, Zhejiang Province has actively promoted a new model of rural wastewater treatment, providing a full range of operation and maintenance services for local rural wastewater treatment. Since 2016, it has been rated as an excellent county for agricultural wastewater treatment operation and maintenance in Zhejiang Province and a national agricultural pollution control demonstration county every year, and has been praised by all walks of life. In 2019, the Village and Township Construction Department of the Ministry of Housing, Urban-Rural Development and Construction combined with the demonstration work of 100 counties in rural wastewater treatment across the country, and released the "County Area Coordination and Promotion of Rural Domestic Wastewater Treatment Cases", including the Kaihua County.

 

  1. Overall situation and effectiveness

 

Kaihua County is located at the source of the Qiantang River in the west of Zhejiang Province and the junction of Zhejiang, Anhui, and Jiangxi, with a total county area of 2,236.61 square kilometers. Kaihua County has 8 towns, 6 townships, 255 administrative villages, a total population of 360,000, and 90,400 rural households. At present, excluding 6 villages to be resettled, wastewater treatment facilities in the administrative villages of the county have achieved full coverage.

 

In 2017, the county added 100 rural wastewater treatment terminals, and a total of 785 rural wastewater treatment terminals have been built. The rural wastewater pipe network is 1822.17 kilometers, covering 255 administrative villages, benefiting 79,000 households. The wastewater treatment ability reaches 11,000 tons per day, and the qualified rate of effluent water quality reached 100%. All the wastewater treatment stations in the county and the 685 rural wastewater terminals built are all included in third-party professional operation and maintenance.

 

In 2018, in order to consolidate the effectiveness of governance and ensure the continuous improvement of effluent water quality, Kaihua County made the special plan and further improved the management and protection mechanism, implemented the "district chief" and "webmaster" management model. At present, a total of 825 rural wastewater treatment terminals have been built, benefiting more than 96,000 households. All rural domestic wastewater treatment facilities are handed over to third-party operation and maintenance, and the handover operation and maintenance rate is 100%. In 2018, the number of effective monitoring days for outbound water in Kaihua County was 364 days, among them, 149 days for Class I water quality, 214 days for Class II water quality, 1 day for Class III water quality, and 99.7% of Class II water quality and above. Compared with the same period last year, the water quality has been improved obviously.

 

  1. Main experience and practice

 

Kaihua County strengthens the top-level design, promotes the treatment of rural domestic wastewater, constructs with high-standard; determines the pollution control mode according to local conditions; unifies operation and maintenance, and uses information technology to promote the orderly development of operation and maintenance.

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