1. Before starting up, check whether the system meets the conditions for starting up
2. The crushing grille should run continuously
3. Remove debris in time and inspect it regularly Grid correction; when the amount of water inflow increases, the number of cleaning times will be increased.
4. Screen slag should be treated or disposed of in a timely manner.
5. Regular inspections should be carried out during the operation of the grille. If any abnormality is found in the equipment, it should be shut down immediately for maintenance.
6. The transmission mechanism should be inspected regularly and the equipment should be ensured to be in good operating condition.
7. The wear and tightness of the crushing grid blade set should be checked regularly and adjusted or replaced in time.
8. Crushing grates that have been out of operation for a long time must not be soaked in sewage pools for a long time, and the equipment must be cleaned and maintained.
9. When inspecting the grille or manually removing screen debris, the power supply should be cut off and carried out under effective supervision.
10. The deodorization settings between grilles should comply with the relevant provisions of Chapter 6 of this regulation.
11. The number of grid machines should be turned on according to process requirements. The flow rate of sewage through the grid should be (0.6~1.0) m/s.
12. The water level difference before and after the sewage passes through the grille should be less than 0.3m.
1. The number of water pumps turned on should be adjusted according to changes in water inflow and process operation conditions.
2. When multiple water pumps are powered by the same transformer, they must not be started at the same time, but should be started at intervals from large to small.
3. The cooling oil level of the centrifugal pump should be checked regularly.
4. The pump room collection pool should be cleaned at least once a year, the water level scale or liquid level gauge and its conversion device should be inspected, and the hydrogen sulfide detection instruments and alarm devices should be verified periodically.
5. Blockages in impellers, gate valves, and pipes should be removed in time.
6. The water level changes in the water collection tank should be observed regularly.
When the water pump is in operation, it must implement a patrol inspection system and comply with the following regulations:
1. Observe whether the various instrument displays are normal and stable;
2. The bearing temperature rise shall not exceed the ambient temperature of 35°C or the set temperature;
3. Check whether the water pump packing gland is hot and whether the dripping is normal, otherwise the packing should be replaced in time;
< p> 4. The water pump unit must not have abnormal noise or vibration.5. When the following conditions are found during operation of the water pump, it must be stopped immediately:
6. The water pump has a broken shaft failure.
7. The motor has a serious failure.
8. Abnormal sound or vibration occurs suddenly.
9. The bearing temperature rise is too high.
10. The display value of voltmeter, ammeter and flow meter is too low or too high.
11. A large amount of water leakage occurred in the inlet (outlet) water pipes and gate valves of the machine room pipelines.
When the submersible pump is operating, it should comply with the following regulations:
1. Observe and record information reflecting the operating status of the submersible pump, and deal with any problems found in a timely manner;
< p> 2. Regularly inspect and replace the oil and mechanical seals in the submersible pump oil chamber, and it is strictly forbidden to damage the seal end face and shaft;3. When lifting and hoisting the submersible pump, it is strictly forbidden to directly pull the pump cable.
1. Adjust the opening of the water inlet gate valve according to the settings of the pool group and changes in water volume.
2. The sand discharge time and sand discharge frequency are set according to the type of grit chamber, the sand content in the sewage, and the changes in the sand content.
3. The air volume is adjusted according to the change of water volume.
4. Record and count the amount of sand settling, and analyze the organic matter content of the sand settling particles regularly.
5. The discharged sand and removed scum should be processed or disposed of in time.
6. Clean the tank regularly and inspect the sand removal equipment.
7. Electrical equipment should be protected against moisture and corrosion.
8. The agitator of the cyclone grit chamber should be kept running continuously, and the rotation speed of the agitator blade should be set reasonably. When the agitator fails, the water supply to the pool should be stopped immediately.
9. In the grit chamber for airlift sand discharge, regularly check the safety valve of the gas tank, the blower filter element and the airlift pipe to avoid problems such as failure, saturation and blockage.
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2. Check the oil level of the hydraulic station of the sand suction machine every day, and check the limit device of the sand removal machine every month;
3. When the sand suction machine is running, at the same time on the bridge The number of people on board shall not exceed the permitted weight load.
Operating parameters of various types of grit chambers
1. According to the setting of the pool group and the change in water inflow, adjust the water inlet into each pool to ensure uniform water distribution in each pool.
2. Determine the frequency and time of sludge discharge according to the sludge settling performance, sludge interface height, sludge volume, etc.
3. The water discharge from the weir of the grit chamber should be kept uniform and no sludge should overflow.
4. The discharged scum should be treated or disposed of in time.
5. If static pressure mud is used to discharge mud, mud should be discharged according to the corresponding mud discharge time and frequency.
6. When the scraper is running, multiple people are not allowed to stay on the scraper aisle at the same time.
7. The inclined plate (pipe) and pool body should be flushed regularly according to the operation conditions, and the brushes, traveling gear, scum scraper, mud scraper, etc. of the scraper motor should be checked regularly. Wear parts should be replaced in time if damage is found.
8. The inclined plate (pipe) and ancillary equipment should be inspected regularly.
9. Empty once a year, clean the distribution channels, pipes and mud at the bottom of the pool, and repair the mud scraper and underwater components.
10. When the radial flow primary sedimentation tank sludge scraper is to be repaired or out of service for a long time, the sludge in the tank should be emptied.
Primary sedimentation tank operating parameter table
1. The number of operating sludge pumps and the sludge discharge time should be determined according to the operating conditions.
2. When inspecting and repairing semi-underground or underground sludge pump rooms, good ventilation should be ensured in the workroom.
1. Determine the operation mode based on the design capacity, water inlet volume, and number of pool groups.
2. Adjust the sludge load, sludge age or sludge concentration through the remaining sludge discharge amount.
3. Control dissolved oxygen according to the requirements of different processes. The dissolved oxygen concentration in an aerobic pool should be 2 to 4 mg/l; the dissolved oxygen concentration in an anoxic pool should be less than 0.5 mg/l; and the dissolved oxygen concentration in an anaerobic pool should be less than 0.2 mg/l.
4. The nutrients in the biological reaction tank should be balanced.
5. The operation and management personnel should master the pH, DO, MLSS, MLVSS, SV, SVI, water temperature and other process control indicators of the biological reaction pool every day, and detect the biological phase of the activated sludge in the biological pool through microbial microscopy. , observe the activated sludge color, state, odor and supernatant transparency, etc., and adjust the operating conditions in a timely manner.
6. When abnormal conditions such as sludge expansion and sludge floating are discovered, the reasons should be analyzed, the system operating conditions should be adjusted according to the specific situation, and effective measures should be taken to restore normalcy.
7. When the water temperature of the biological reaction tank is low, appropriate measures should be taken to extend the aeration time, increase the sludge concentration, increase the sludge age, or other methods to ensure the treatment effect of sewage.
8. According to the requirements of effluent water quality and changes in different operating conditions, the reflux ratios of biological reaction tanks in different processes should be adjusted and controlled.
9. When abnormal phenomena such as foam and floating mud appear in the biological pool, analysis should be carried out based on sensory indicators and physical and chemical indicators, and corresponding control measures should be taken.
10. Operators often drain the water stored in the air pipeline of the aeration system and should close the drain valve in time.
11. Observe the operation and fixation of the biological reaction tank aeration device and underwater pusher (mixer). If any problems are found, they should be repaired in time.
12. When using the SBR process, the operation cycle should be reasonably adjusted and controlled, and the decanter should be inspected, cleaned and maintained regularly according to the equipment requirements. The siphon decanter should also be checked for air leakage. .
13. For aerated biological filters, periodic backwashing should be carried out according to design requirements and the intensity of air and water backwashing should be controlled.
14. Metal air pipes, retaining walls, flange interfaces or wire mesh should be inspected regularly. If corrosion or wear is found, they should be dealt with in time.
15. For rubber aerators that are not used for a long time, corresponding measures should be taken to avoid sun exposure.
16. The scum and attachments on the biological reaction tank, as well as the foam and scum that spilled onto the walkway, should be removed in time, and anti-slip measures should be taken.
17. When using the phosphorus and denitrification process, the dissolved oxygen concentration, carbon-nitrogen ratio, sludge return ratio, etc. should be adjusted in a timely manner according to water quality requirements and changes in working conditions.
Normal operating parameters of biological reaction pool
To be continued~
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