Current status of phosphorus-containing wastewater treatment in China
Thread Content
What are the main technologies currently used by factories in China that generate phosphorus-containing wastewater, and what is the effectiveness of these treatments? Thank you!
The main methods for treating phosphorus-containing wastewater include: first, physicochemical methods, such as the use of iron salts and aluminum salts for precipitation treatment； The second is the biological method, which utilizes the mechanisms of microbial metabolism for phosphorus removal ； Third is the membrane treatment method ；
Inorganic phosphorus can be treated using physicochemical methods, while organic phosphorus cannot be treated in this way.
The issue of phosphorus removal has been discussed many times before; you can search the site for it. Theoretically, there are two methods: chemical phosphorus removal and biological phosphorus removal. Chemical phosphorus removal primarily involves chemical precipitation, with reagents such as aluminum salts, iron salts, or lime being used; it is mainly aimed at removing inorganic phosphorus. Biological phosphorus removal focuses on removing organic phosphorus, and the principles behind this method have been explained in detail above. Generally, phosphorus removal in wastewater involves a combination of chemical and biological methods. However, in terms of current engineering practices, it is still very difficult to meet the standard of 0.5 mg/L; it is said that many water treatment plants continue to operate even when the phosphorus levels do not meet this standard.
Why can’t I find it? Could you tell me where it is? Thank you.
Does the original poster really want to remove inorganic phosphorus or organic phosphorus? There should be quite a lot of information available on wastewater phosphorus removal at present. It is recommended that the original poster search in relevant databases and online resources; there should be a lot of information available on this topic.
Phosphorus removal is quite troublesome; currently, it is generally difficult for municipal wastewater to meet the required standards using only biological methods. To achieve these standards, chemical treatments are necessary to remove phosphorus, and the total phosphorus content in municipal domestic wastewater is usually around 5 ppm. Phosphorus removal from phosphorus chemical wastewater is even more difficult. Whether organic or inorganic, chemical phosphorus removal is the main method, with biological phosphorus removal serving as a supplement; sometimes the requirements cannot be fully met.