What should sewage treatment plants pay attention to?
This article sorts out what regulations should be paid attention to and complied with during the use of sewage for sewage treatment plant operators, so that you can master more sewage treatment operation experience. 1. When chlorine dioxide is used as chlorine dioxide, the following regulations must be met: 1. The purchase and storage of hydrochloric acid should comply with the current relevant standards; 2. The distance between solid chloric acid and the equipment should not be less than 5m; It should be ventilated and cool; 3. In the process of handling and preparing sodium chlorate, it is strictly forbidden to hammer or drop metal parts, and open flames are strictly prohibited; 4. Operators should wear protective gloves and glasses. When chlorine dioxide is used, the following regulations should be met: 1. The dosing amount should be determined according to the water volume and water quality requirements; 2. The filter in the chlorine dioxide raw material filling gate valve should be cleaned regularly; 3. The explosion-proof should be checked before starting the machine. Check whether the mouth is blocked, and ensure that the explosion-proof port is open; 4. Check whether the water bath replenishment valve is open before starting the machine, and confirm whether there is sufficient tap water in the water bath tank; 5. After the dosing pump stops working during shutdown, the equipment should run again After 30 minutes, the water inlet can be turned off; 6. When shutting down, the heater should be turned off. 2. Sodium hypochlorite When sodium hypochlorite is used, it should meet the following requirements: 1. The dosage should be determined according to the water volume and water quality requirements; 2. The sodium hypochlorite generator should be cleaned once a month; 3. The agent should be stored in a dark and dry place and a well-ventilated clean room; 4. Measures such as sun protection and rain protection should be taken during transportation; and upside-down loading and unloading should be avoided. 3. When using liquid chlorine as liquid chlorine, it shall comply with the following regulations: 1. Check the alarm and the effective linkage function of the chlorine leakage absorption device and the chlorine leakage detection instrument 11 times a week, and start the manual device 11 times a week to ensure It is in a normal state; 2. Chlorine storage should be equipped with chlorine leakage detection and alarm devices and protective equipment. 3. The amount of chlorine to be added should be determined according to the specific conditions such as water quality, water volume, water temperature and pH value; 4. The chlorine leakage detector should be checked and maintained once a month, and the gas mask should be checked once a week: 5. Chlorine leakage absorption device It is advisable to clean once every 6 months; 6. When adding chlorine, it should be carried out in accordance with the operating procedures of the chlorine adding equipment, and the main chlorine outlet valve should be closed before stopping the pump; It should be ventilated for (5-10) minutes; 8. An emergency treatment plan and procedure for liquid chlorine leakage should be formulated; 9. If the chlorination facility is shut down for a long time, the chlorine bottle should be disposed of properly. When re-opening, preparations should be made according to the inspection and acceptance plan for the commissioning and operation of the chlorine dosing room; 10. To open and close the gate valve of the chlorine cylinder, use a special wrench, use a special wrench, and use force evenly. Hammering is strictly prohibited, and leak detection is carried out at the same time; 11. Chlorine The management of the bottle should comply with the current standard 'Chlorine Regulations' GB11984; 4. When ultraviolet light is used, it is strictly forbidden to open the equipment when there is no water in the channel or the water volume does not reach the operating water level of the equipment. It should also meet the following requirements: 1. Regardless of whether there is an automatic cleaning mechanism, the glass casing must be manually cleaned on a regular basis according to the sewage water quality and the actual sewage treatment on site; 2. The ultraviolet lamp, glass casing, and glass casing should be replaced regularly Clean the ring and light intensity sensor; 3. Regularly overflow the silt in the canal before the overflow weir; 4. Meet the effective water level in front of the overflow weir to ensure the submersion depth of the ultraviolet lamp; 5. Those who work or visit the ultraviolet process system Personnel must be well protected; non-staff personnel are strictly prohibited from staying in the work area; 6. The equipment light source module and control cabinet must be strictly grounded to avoid electric shock accidents; 7. When manually cleaning the glass casing, rubber gloves and protective glasses should be worn ; 8. The transmittance of sewage using ultraviolet rays should be greater than 30%. 5. Ozone When ozone is used, the ozone concentration detection and alarm device in the ozone generation room should be calibrated regularly; when an ozone leakage accident occurs, the doors and windows should be opened immediately and the exhaust fan should be activated. It should also meet the following requirements: 1. The opening and closing of the ozone generator should lag behind other equipment in the ozone system, and the operator must strictly follow the sequence of starting and stopping the system; The blowdown times of the compressor; 3. The air compressor must be equipped with a valve to ensure that it works within the specified pressure range 4. When the pressure in the system exceeds the set pressure, check the cause of the overpressure and eliminate the fault; 5. Water-cooled air compressors should adjust the amount of cooling water according to the seasonal temperature. The inlet temperature of the circulating cooling water should be controlled at 20-32°C, and the outlet water temperature should not exceed 38°C; 6. The operation of the dryer should minimize the consumption of regeneration gas under the premise of meeting the gas quality requirements; 7. In winter or If the ozone generator does not work for a long time, the water in the equipment in the system should be drained; 8. When using the exhaust gas destroyer to treat the exhaust gas, the catalyst should be regularly checked for the use effect, and the catalyst should be replaced in time. 9. The air compressor, dryer, pre-cooler, ozone generator, etc. should be maintained every month; 10. The ozone contact and exhaust gas absorption facilities should be cleaned at least once a year, and the iron parts should be painted once a year;