- business background:
Phosphorus is the root cause of eutrophication in water bodies. If it is directly discharged from the water body without treatment, it will seriously pollute the water environment. Although phosphorus is an essential nutrient for living organisms, it is not toxic in itself. However, when a large amount of phosphorus substances are discharged into the water together with other nutrients, it will cause a large number of algae substances to reproduce, causing the ecological balance of the water body to be imbalanced, resulting in eutrophication of the water body. Current cyanobacteria, red tide and other phenomena are caused by excessive phosphorus and other phenomena.
The form of phosphorus in water is divided into two categories: organic phosphorus and inorganic phosphorus. At the same time, inorganic phosphorus exists in various forms in water, such as orthophosphate, hypophosphite, pyrophosphate, metaphosphate and polyphosphate.
- Introduction to common treatment processes for phosphorus-containing wastewater :
- Chemical precipitation method: By adding chemical precipitants and phosphates in wastewater to form insoluble precipitates, phosphorus can be separated. At the same time, the formed flocs also have adsorption and removal effects on phosphorus. Commonly used coagulant precipitants include lime, alum, ferric chloride, a mixture of lime and ferric chloride, etc.
- Adsorption method: Commonly used is to use activated carbon, resin, etc. for adsorption to achieve the effect of reducing the phosphorus content in water.
- A/O process: Utilizing the principle that phosphorus is an essential nutrient element for the growth of microorganisms, phosphorus in wastewater is removed through biochemical processes.
- Introduction to our company’s phosphorus-containing wastewater treatment technology :
Our company has demonstrated through multiple engineering cases and adopted a reasonable process optimization combination to reduce the phosphorus content in the water to within the range required by biochemistry, reduce the need for repeated phosphorus supplementation in later biochemical processes, and satisfy the biochemical treatment process.
- Our company’s phosphorus-containing wastewater treatment technology treatment indicators:
Meet the comprehensive sewage discharge standard (GB 8978-1996).
- Process flow block diagram:
Inorganic phosphorus wastewater:
Organophosphorus wastewater:
- Typical projects
A company in Yancheng produces organic phosphorus products with a phosphorus content as high as 4578 mg/L. Using our company’s technology, the phosphorus content is reduced to 0.8 mg/L after biochemical water is discharged.