What should I do if the effluent meets the standard but the sludge concentration rises very slowly?
If the effluent meets the standard but the sludge concentration rises very slowly, the following measures can be considered:
1. Increase the organic load: Increasing the organic load in the wastewater can stimulate the growth and reproduction of aerobic microorganisms, thereby promoting the production and growth of sludge. However, it is necessary to control the increase in the organic load to avoid impacting the treatment system.
2. Adjust ventilation and stirring: Good ventilation and stirring can increase the dissolved oxygen content and mixing effect in the aerobic tank, which is conducive to the metabolic activity of aerobic microorganisms and the formation of sludge. Appropriately increase the ventilation and stirring intensity to improve the operating conditions of the aerobic tank.
3. Check the sludge quality: Check the sludge quality in the aerobic tank, including particle size, colony structure, etc., to ensure that the sludge has good sedimentation and activity. If necessary, consider adjusting the aeration residence time.
4. Add auxiliary agents: If necessary, consider adding some auxiliary agents, such as microbial activators, nutrients, etc., to promote the growth and activity of aerobic microorganisms, thereby increasing the sludge production rate.
5. Consider sludge return: The appropriate amount of sludge produced by the aerobic pool can be returned to increase the concentration of microorganisms in the aerobic pool and promote the growth of sludge.
When taking the above measures, it is necessary to carefully monitor the operation of the treatment system to avoid affecting the effluent water quality and system stability due to too fast operation changes. At the same time, it is also necessary to make adjustments according to the specific situation to ensure the safe and efficient operation of the treatment system.