How to judge the sludge poisoning of rural sewage equipment in townships and townships? Integrated sewage equipment plays a key role in the treatment of rural sewage. In the process of handling emergencies, we must also do a good job of timely governance. Today, we understand how we should do to help the equipment recover before and after sludge poisoning in sewage treatment equipment
The main cause of activated sludge poisoning in rural areas comes from farmers flushing a large number of pesticides into sewage treatment information systems and industrial production wastewater containing a large amount of chemicals into integrated sewage equipment. The concentration of opportunities for degradation of the integrated equipment itself is insufficient, the growth state of the activated sludge method is not good, and the inflow of toxic sewage is also understandable.
1, through the disappearance of protists to judge whether the activated sludge is poisoned: we need to observe the state of protozoa in the activated sludge for the first time. Protozoa are represented by fibrals. If it all disappears, it is possible to know if any toxic water has flowed into the device. 6 hours after the death of the lintel. The body is hydrolyzed and disappears. We need to look through a microscope!
2. Judged by the sedimentation ratio of activated sludge: the first phenomenon of activated sludge poisoning is that the sedimentation ratio of activated sludge is reduced, and the protozoa die. Activated sludge can preserve the activity of the bacterial glue mass for itself, sacrificing the bacteria on the periphery of the bacteria gum mass, so the peripheral and dead bacteria will come out of time and distribute to the sewage of the equipment. At the same time, the coarser microbial micelles of the activated sludge method will also decompose and become smaller and smaller. At this time, we will find that there are many small particles in the water that cannot be settled. The flocculation effect of the activated sludge method became worse and the flocculation time was long.
3. Liquid sludge to judge: after the poisoning problem of the activated sludge system, the dead bacteria may form liquid sludge under the action of aeration. The operator needs to observe the characteristics of the sludge level to determine whether the activated sludge is poisoned!
In addition, we can also judge by the change of equipment effluent, after activated sludge poisoning, the effluent detection will find that the COD concentration level continues to increase, this is because the water is mixed with a large number of socially disintegrated activated sludge. And the water is turbid.
1. First of all, to stop the influx of toxic waste is the most important step in the whole teaching process of dealing with activated sludge poisoning. The toxicity of the activated sludge method in the comprehensive equipment is limited, and the high concentration of toxic substances flowing in for a long time can easily lead to the death of the activated sludge method in the equipment. In order to avoid this situation, we need to find the source of the toxin. This is not difficult for small sewage treatment facilities. Cut off the source of the toxin.
2. For the toxic substances that we have entered the system equipment, the operation and management personnel should dilute the mixture of toxic substances at the first time. Because the activated sludge method has a little resistance to different concentrations of toxins. If we find it in time, we can return the uninspired end to the first section of the Chinese biochemical pool.
3. Use the sludge discharge method to resist the influence of toxic substances. The main operation is to discharge the sludge of the abandoned damaged enterprises or we have died, and supplement the new activated sludge to improve the activity of the current bioactive sludge in China. The amount of sludge discharged should be determined according to the micro ratio of food, and F/M = 0.5 is a reasonable phenomenon!
When doing some rural domestic sewage treatment projects, integrated sewage equipment will inevitably encounter the situation of activated sludge poisoning, and after discovering the situation, measures must be taken in time to avoid the devastation of activated sludge!