China News Service, Hangzhou, August 30 (Qian Chenfei) On the 30th, the reporter learned from the official information of Xihu District, Hangzhou that the district recently released the "July 26" Shuangpu Town Hubu Tap Water Abnormal Accident Investigation Report (hereinafter referred to as According to the "Investigation Report", at around 13:00 on July 26, 2020, an abnormal tap water accident occurred in Hubu Village, Shuangpu Town, West Lake District, affecting 446 households (meters) with water safety and direct economic losses of approximately RMB 2.413 million. The accident investigation team determined that this was a production safety accident.

  It is reported that the Shuangpu perishable garbage disposal site where the accident occurred was installed and energized on December 16, 2019, and commissioned trial operation. Afterwards, according to the operation records, intermittent debugging was carried out due to the impact of the epidemic. On the morning of July 26, 2020, Cao Liang, the legal representative of Shexian Jingyi Eco-Environment Engineering Co., Ltd., the operating unit of the project, notified the company’s equipment operator Liu Qiang to start the trial feed. After receiving the instruction, Liu Qiang failed to follow the specifications on the entire system and equipment valves. , Check and operate the working state of the water pump, causing the backwash water in the filter tank to enter the municipal water pipe through the water supply pipe in the disposal point.

  At about 13:30 on July 26, after receiving the complaint, the Zhijiang Branch of Hangzhou Water Affairs Group Co., Ltd. sent an emergency repair team to Hubu Village for investigation; in the evening of the same day, the emergency plan was activated to remove the water meter from users who complained And sewage discharge, and discharge the main pipeline network water to find the source of pollution. At 11 o'clock on July 27, it was discovered that the suspected pollution source was the Shuangpu perishable waste disposal site, and the pipeline control valve was closed; at about 16 o'clock, the disposal site was physically isolated to ensure that the internal process pipeline and The municipal water supply pipeline was completely disconnected; at the same time, the pipe network in the area was flushed and discharged immediately. On the morning of July 28, the water quality of the pipe network passed the test and normal water supply was restored. On July 31, Hangzhou Water Affairs Group Co., Ltd. once again organized a complete elimination of the pipe network in the region, which ended at 4 am on August 1. At present, the water quality has passed the test.

  According to the "Investigation Report", the accident investigation team obtained the following expert opinions: According to the general contractor’s self-inspection and water quality test data, it was confirmed that the pollution source of the accident was the filter tank in the perishable garbage treatment process; because of the construction and installation of the equipment contractor There were defects in the process and the equipment operating unit did not operate according to the standard that day. During the backwashing process of the filter tank, the instantaneous pressure of the backwash water delivery pipe was greater than the water pressure of the tap water pipe, which caused the backwash water to enter the municipal administration through the spare water supply pipe in the disposal point. The water pipe caused the accident.

  The "Investigation Report"'s opinions on the handling of the accident showed that Li Nanshan, the person in charge of the equipment installation site of Guangzhou Xiyi Catering Degradation Equipment Co., Ltd. at the Shuangpu perishable waste disposal site, and the legal representative of Shexian Jingyi Ecological Environment Engineering Co., Ltd. and the project site directly The person in charge Cao Liang and the equipment operator Liu Qiang of Shexian Jingyi Eco-Environmental Engineering Co., Ltd. are suspected of major accidents, and the judicial organs are recommended to pursue criminal responsibility; the legal representative of Hangzhou West Lake Environmental Group Co., Ltd. Zhao Feng and the deputy general manager Zhao Guojian are negligent in management. Failing to effectively supervise the relevant units to perform their safety management responsibilities, they are responsible for the occurrence of the accident. It is recommended that the Xihu District Commission for Discipline Inspection should handle it. (Finish)