What is a thermal power plant? What types of wastewater does it generate? How should the discharged wastewater be tested, and what are the key indicators? These are the questions we will explore today! Please read on.

First, What is a Thermal Power Plant?

A thermal power plant can be simply referred to as a coal-fired power plant. It is a facility that generates electricity by using combustible materials as fuel. The entire process involves using the fuel to heat water during combustion, producing steam. The principle involves converting the chemical energy of the fuel into thermal energy, then converting the thermal energy into mechanical energy, and finally converting the mechanical energy into electrical energy.

What Types of Wastewater do Thermal Power Plants Produce?

Quite simply, thermal power plants generate electricity by burning combustible materials like coal and oil, and this process produces wastewater. This wastewater mainly includes industrial sewage, domestic sewage, dust-collection wastewater, and acidic/alkaline waste liquids. These wastewaters can have a certain impact on the reproduction and growth of aquatic organisms, so they must be carefully treated before discharge. Speaking of the entire wastewater treatment process, water quality monitoring is certainly indispensable.

Following Point two, let’s Understand How the Wastewater Discharged from Thermal Power Plants Should be Tested.

Water quality monitors are used to detect various pollutants in the water. Different parameters require different equipment. For example, the water quality monitoring equipment produced by Hangzhou Modi consists mostly of single-parameter devices, where one device can only test one parameter. Of course, there are also multi-parameter devices available, such as 2-in-1 or 3-in-1 models. However, the company still suggests that purchasing single-parameter devices is more appropriate!

What Indicators Need to be Monitored in Thermal Power Plant Wastewater?

Analysis primarily focuses on four monitoring points:

1.Main Outlet:COD (Chemical Oxygen Demand), Total Phosphorus, Ammonia Nitrogen, Volatile Phenols, Suspended Solids, Petroleum Oils, Fluorides, Sulfides, pH Value, Total Dissolved Solids (Full Salt Content), Flow Rate.

2.Circulating Cooling Water Outlet:pH Value, COD (Chemical Oxygen Demand), Total Phosphorus, Flow Rate.

3.Desulfurization Wastewater Outlet:pH Value, Heavy Metals (e.g., Total Arsenic, Total Lead, Total Mercury, Total Cadmium, etc.).

4.Once-Through Cooling Water Outlet:Water Temperature, Flow Rate, Total Residual Chlorine.

Proper wastewater testing must be carried out to ensure all indicators meet the required standards before discharge. Only then can the safety of the water quality be guaranteed!