Northern sewage treatment
Thread Content
In northern areas such as the three eastern provinces and Inner Mongolia, the temperature is very low in winter. How can biochemical treatment solve the water temperature problem?
1. Steam heating 2. Covering 3. The pool is semi-underground. In addition, if the sludge activity is good, the temperature of high-concentration industrial wastewater can generally be maintained above 15°C, but not municipal wastewater and low-concentration industrial wastewater. Looking forward to communicating with experienced friends
In aerobic sewage treatment, because the water body is constantly flowing and air is constantly entering, there is still very little freezing. Of course, the fully underground type has a heat preservation effect, and heating rods are used, such as boiling water.
Thanks to the two colleagues upstairs, I consulted again about using waste heat from the boiler or directly using a hot air stove to keep the water temperature at 15-20 degrees, which can be biochemical. The cost of using a hot air stove is not too high.
Some use steam exchange heating.
If the sewage treatment volume is too large, heating will be too wasteful. How to accept industrial wastewater? Consider mixing it with thermally polluted industrial wastewater and raising the temperature of the treated water accordingly. The activated sludge method generally has better treatment effects above 10 degrees. In Tianjin and Beijing, the water temperature is around 10 degrees in winter, and the treatment effect is very good.