Wastewater
Wastewater refers to water or liquids that contain high amounts of impurities until they are unwanted and pollute the scenery and cause environmental damage.
Wastewater is water that is affected by the quality of human influence. The city's sewage system drains into pipes or drainage canals to be treated at wastewater treatment plants or directly into natural water bodies. Treated wastewater is further released into natural water bodies or may be exploited in some way.
In general, wastewater sources are caused by community wastewater, industrial wastewater, and agricultural wastewater.
Wastewater composition includes water (> 90%), pathogens such as bacteria, viruses, preons and helminths, non-pathogenic bacteria, organic particles, soluble organic matter, inorganic particles, soluble inorganic substances, animals, solids, gases such as rotten egg gas, carbon dioxide, methane, emulsions, toxins, medicines and hormones.
Some wastewater disposal in the city is carried out separately in sewers from the roads during heavy rainfall periods. Water can overflow the drain. This forces uns healed wastewater to flow back into place. This can pose a serious threat to public health and the surrounding environment. Waste released from industrial plants enters roadside drainage ways. Wastewater may be drained directly into the main upstream source with minimal or no treatment. When inhaled, wastewater can have a severe impact on environmental quality and public health. Pathogens that can cause a wide range of illnesses Some chemicals pose a risk even at very low concentration levels and remain a threat for an extended period time.
There are 3 characteristics and properties of wastewater: physical, chemical, and biological characteristics.
1. Physicals characteristics include color, smell, temperature, solids, turbidity and density, etc.
2. Chemicals characteristics include acidic - alkaline, organic, fatty, detergent, nitrogen, phosphorus, sulfur. Heavy metals, etc.
3. Biological characteristics are very important for wastewater treatment. Because in sewage there are microorganisms that are harmful to human life and health.
At the same time, in wastewater treatment systems, another microorganism is used to decompose various impurities, including bacteria, which help decompose 95% of wastewater impurities, in other than fungi, algae and protozoa.
Household wastewater is very serious in Taiwan. Nearly 70% of environmental pollution comes from household wastewater. Cooking waste oil has always been one of the biggest pollution sources. In order to remove kitchen oil, housewives bought all kinds of decontamination detergents for scrubbing and washing, which caused secondary pollution of the water source.
What can we do?
1. Put the residue filter at the sink.
2. The oil on the used utensils should be wiped first and then cleaned.
3. Choose non-phosphorus natural detergent and reduce the amount as appropriate.
4. Use old newspapers when cleaning windows. Avoid using detergents to reduce the amount of sewage.