What is the "three high" industrial wastewater?

The manufacturer of high-voltage electrostatic circulating water will explain to you, "three high" industrial wastewater refers to:

1. High concentration of organic compounds and complex components (often accompanied by color and odor) most of the industrial wastewater involved in CODcr is more than 2000 mg / L, and some even reach tens of thousands or even hundreds of thousands of mg / L. there are various refractory organic compounds, such as aromatic and heterocyclic compounds.

2. The ammonia nitrogen content of some wastewater (livestock, food, fuel, etc.) with high ammonia nitrogen content is more than 200mg / L.

3. The salt content of some high salinity wastewater (pharmaceutical intermediates and other basic chemical industries) exceeds the biological bearing capacity by less than 5000mg / L, reaching tens of thousands or even hundreds of thousands of mg / L.

Harmfulness of "three high" industrial wastewater:

1. Toxic and hazardous high concentration organic industrial wastewater contains a large number of toxic and harmful substances, which are accumulated and stored in natural environment such as water and soil, and then enter human body through food chain and affect health.

2. Aerobic harmfulness due to biodegradation, high concentration organic wastewater will make the receiving water anoxic or even anaerobic, and most aquatic organisms will die, thus producing odor, deteriorating water quality and affecting the environment.

3. Sensory pollution is harmful to high concentration organic wastewater with low transparency, which affects the growth of aquatic organisms and microorganisms, and is not conducive to the self purification of water body. It not only makes the water body lose its use value, but also affects the normal life of the surrounding residents.

Processing trend:

However, the effective treatment rate of industrial wastewater is about 88%.

2. In addition to livestock and poultry breeding wastewater, other wastewater producing enterprises basically have complete treatment facilities. However, due to operating costs and technical problems, it is very limited to meet the direct discharge or nanonet standards.

3. The national "ten water policies" and the determination to eliminate five types of water by 2017 will continue to vigorously promote the treatment of industrial wastewater pollution. According to the report on investigation and analysis of China's industrial wastewater treatment industry and market prospect forecast (2015-2020), the investment in industrial wastewater treatment during the 13th Five Year Plan period can reach nearly 1 trillion yuan.

"Three standards" and "upgrading of industrial wastewater" are the main methods.