The main points of operation and maintenance of the drainage network of the rural domestic sewage treatment plant project are as follows:
1. The testing should be in accordance with the relevant provisions of the current "Urban Drainage Pipeline Testing and Evaluation" (CJJ181). Functional testing no less than once a year, mainly including inspection wells, rainwater outlets, discharge outlets and pipes and drains of sedimentation, scaling, obstacles, tree roots, puddle water, residual walls, dam head, scum, rainwater and sewage mixing, water level and water flow, manhole cover breakage of toxic and harmful gases. Structural testing every 3 years should be no less than 1 time, mainly due to the irrigation canal including disjointed, deformation, branch pipe concealed connection, misalignment, leakage, corrosion, rubber ring off, foreign body intrusion, inverted slopes, collapse, foreign pipe penetration.
2, pipe and canal mud depth should be less than 20% of the inner diameter of the pipe, the phenomenon of sedimentation and siltation frequent pipe section to increase the frequency of cleaning. Pipe clogging is appropriate to use special machinery dredging.
3, repair of structural damage to the pipeline should be based on the assessment report, the development of repair design program. Excavation repair should be in line with the current "construction and acceptance of drainage pipe project specification" (GB50268) of the relevant provisions of the non-excavation repair should be in line with the current "urban drainage network non-excavation repair and renewal of engineering technical procedures" (CJJ/T210) of the relevant provisions.
4, pipeline sludge transportation and treatment devices should meet the requirements of the relevant management departments.
5. The setting and removal of pipe and canal blocking shall be reported to the competent authorities for approval. Setting up the blocking shall be operated in the order of descending, blocking upstream and blocking downstream, and removing shall be operated in the order of removing downstream and removing upstream. The blocking method can be pneumatic pipe plug, mechanical pipe plug, water stop board, wood plug, clay sack or wall.
6, the temperature in the region below 0 degrees or season in the permafrost above the pipeline is appropriate to do pipe insulation measures.
7, into the urban sewage network of sewage trunk pipelines, pumping station maintenance should be in line with the current "urban drainage pipe and pumping station operation, maintenance and safety of technical regulations" (CJJ68) of the relevant provisions.