Small healthy sewage treatment equipment [advanced]

Small health pollution Water treatment equipment Advanced The healthy wastewater passes through a mechanical grid to remove large suspended, floating and banded substances in the water. The supernatant flows into the regulating tank by gravity, which regulates the quantity and quality of sewage. The effluent from the regulating tank is lifted to the A-level biochemical tank (anoxic tank) and the O-level biochemical tank (aerobic tank) for biochemical treatment. The composition of agricultural production system in hospital sewage is high, BOD5/CODcr=0.5, and the biodegradability is very good. Therefore, it is economical to use biological treatment methods to significantly reduce the content of agricultural production system in sewage.

Small healthy sewage treatment equipment [advanced] Due to the high content of ammonia nitrogen and agricultural production system substances in the sewage, especially the agricultural production system nitrogen, when the agricultural production system substances are biodegraded, the agricultural production system nitrogen will appear in the form of ammonia nitrogen, which is also an important pollution control indicator. Therefore, the sewage treatment adopts the anoxic aerobic A/O biological contact oxidation process, That is to say, the biochemical tank should be divided into two parts: A level tank and O level tank.

In the A-level pool, due to the high concentration of agricultural production system substances in the sewage, the microorganisms are in the anoxic state. At this time, the microorganisms are facultative microorganisms, which convert the agricultural production system nitrogen in the sewage into ammonia nitrogen. At the same time, the carbon source of the agricultural production system is used as the electronic donor, and NO2 -- N NO3 -- N is converted into N2, and new cell substances are synthesized by using carbon sources and ammonia nitrogen in some agricultural production systems.

Therefore, Class A tank not only has a certain removal function of agricultural production system substances, reduces the load of agricultural production system of subsequent Class O biochemical tank to facilitate nitrification, but also relies on the high concentration of agricultural production system substances in sewage to complete denitrification and finally eliminate nitrogen eutrophication pollution.

Small healthy sewage treatment equipment [advanced] Then they bring a lot of water, such as soy sauce water, ink, printing water, mop water, and even children's urine, and then use this ceramics Membrane to do this test. After treatment, it can be drunk. At that time, many people on the scene felt that this was impossible. Some took out a test pen to test the water quality, which was drinkable.