【Daily Question】Utilities - Water Supply and Drainage - 20200504

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Regarding the design of wastewater treatment plants, which of the following statements is incorrect? A. The distance between a surface treatment plant that uses domestic wastewater as its raw material and residential buildings should not be less than 10 meters. B. In building complexes, the rooms used for storing chemicals and disinfectants in the water treatment plants should be separated from other rooms. C. Water treatment plants located within buildings should be placed on the lowest floor of the building. D. Effective measures must be taken to eliminate the odors generated during water treatment. Answer: A and B comply with the provisions of Article 7.0.2 of the Code for Design of Building Reclaimed Water Systems. To ensure safety, the chemical dosing and storage room as well as the disinfectant preparation and storage room in the building complex’s wastewater treatment plant should be separated from other rooms. Option C complies with the provisions of Article 7.0.1 of the Code for Design of Reclaimed Water in Buildings. The loads from ponds and equipment within the station are relatively heavy; locating the treatment station on the ground floor can reduce the complexity for the structural engineering team ； Furthermore, since the treatment station is located on the ground floor, the raw reclaimed water can easily flow into the station by gravity or be discharged in case of an accident, and the operation of the equipment does not affect the rooms below. Option D complies with the provisions of Article 7.0.9 of the Code for Design of Reclaimed Water in Buildings. The process of treating reclaimed water generates odors; to prevent these odors from affecting the environment, effective odor removal measures should be taken. Option A does not comply with the provisions of Article 7.0.1 of the Code for Design of Reclaimed Water in Buildings. To prevent the harmful effects of unpleasant odors and mechanical equipment noise generated during wastewater treatment on the building environment, a protective distance of 15 meters should be maintained between the wastewater treatment station and public buildings as well as residential buildings. In option A, the protection distance is only 10m, which does not meet the requirements.