What are the main functions of tertiary treatment of wastewater treatment equipment

Modern wastewater treatment technology can be divided into primary wastewater treatment, secondary wastewater treatment and tertiary wastewater treatment according to the treatment degree.

Primary treatment of wastewater:

It is mainly used to remove suspended solid pollutants in wastewater, and most physical treatment methods can only meet the requirements of primary treatment. BOD can generally be removed by about 30% of the wastewater after primary treatment, which does not meet the discharge standard. The primary treatment belongs to the pretreatment of secondary treatment.

Secondary treatment of wastewater:

It is mainly used to remove organic pollutants (BOD, COD) in colloid and dissolved state in wastewater, with a removal rate of more than 90%, so that organic pollutants can meet the discharge standard.

Tertiary treatment of wastewater:

Further treatment of refractory organics, nitrogen, phosphorus and other soluble inorganic substances that can lead to eutrophication of water bodies. The main methods include biological nitrogen and phosphorus removal, coagulation sedimentation, sand rate, activated carbon adsorption, ion exchange and electroosmosis analysis.

As we all know, a device will have problems such as reduced work efficiency or equipment failure after being used for a long time, and the same is true for hospital laboratory wastewater treatment equipment. If we want to prolong the aging time of equipment, Electroplating wastewater treatment equipment We need to maintain the equipment regularly at ordinary times. Here's how to maintain the hospital laboratory wastewater treatment equipment:

1. Do a good job of cleaning the surface of the pump room and unit of the hospital laboratory wastewater treatment equipment.

2. The water tank and impeller shall be checked regularly, and the garbage in the pump shall be removed.

3. Pay attention to the oil level, oil quality and temperature of the bearing, and replace the lubrication of the bearing regularly. The lubricating oil of water pump shall be changed once every 500 hours, and the lubricating grease of bearing shall be changed once every 2000 hours.

4. Check whether the fasteners of various parts of the hospital laboratory wastewater treatment equipment are loose.

5. Regularly check the hospital laboratory wastewater treatment equipment and replace the filler.

6. During the operation of the pump, pay attention to whether the water dripping at the packing is normal. A small amount of water dripping is allowed outside the packing, but no running water is allowed.

In the sludge dewatering stage, most of them directly use cationic flocculants, but some of them also use inorganic and organic Danfang, and some unique sludge will use coagulant aids that participate in the same anti ion additives to carry out pre-treatment before completing sludge dewatering. There is no good flocculant or bad flocculant. As long as the right model is selected, the appropriate wastewater model is the right one. It is not advisable to use value to define the good or bad flocculant. Different flocculants will be very different for different sludge. The amount of flocculant involved in sludge dewatering is usually 3-5 kg.