What are the suspended solids in the wastewater produced by the lysine plant, and what method is bet

Modern wastewater treatment methods are mainly divided into three categories: physical treatment, chemical treatment and biological treatment. Physical treatment method: wastewater treatment method that separates insoluble suspended pollutants (including oil film and oil beads) in wastewater by physical action.

Precipitation, filtration, centrifugal separation, air flotation, evaporation crystallization, reverse osmosis and other methods are usually used. Pollutants such as suspended solids, colloids and oils in wastewater are separated, so that wastewater can be preliminarily purified. Chemical Treatment:

This is a wastewater treatment method that separates, removes, or converts pollutants in a dissolved or colloidal state from wastewater into harmless substances through chemical reactions and mass transfer. The methods commonly used are: neutralization, coagulation, redox, extraction, stripping, blowing, adsorption, ion exchange and electroosmosis.

Biological treatment method: through the metabolism of microorganisms, the wastewater solution, colloid, organic matter, toxic substances and other pollutants in the fine suspension state are converted into stable and harmless substances. The biological treatment method is divided into two methods: aerobic treatment and anaerobic treatment.

At present, aerobic treatment methods are commonly used in activated sludge method, biological filter and oxidation pond. Anaerobic treatment, also known as biological reduction treatment, is mainly used to treat high-concentration organic wastewater and sludge, using treatment equipment, mainly digesters, etc. The wastewater of the fermentation plant contains a lot of organic materials, and biological treatment methods should be used mainly for this situation.

It is mainly high ammonia nitrogen wastewater, which can be blown off to degrade part of it, and then treated in a biochemical tank. There are also some COD and phosphorus and suspended solids, which can be treated by biochemical and chemical methods.

The common treatment method for impurities in wastewater is to add chemicals to precipitate the impurities in the wastewater, and then you can go to a filter press to squeeze the impurities in the raw materials.

There are many ways to treat wastewater, without chemicals, and wastewater treatment equipment can also be used to treat impurities in wastewater by other methods.

The BNR process is the most common method for removing low concentrations of ammonia nitrogen from wastewater, but it is not suitable for treating wastewater with high concentrations of ammonia nitrogen, and more frequent physicochemical methods, such as blow-off, are used. The main problem with the biological treatment of high-concentration industrial wastewater is that high concentrations of ammonia nitrogen or nitrite inhibit nitrification. However, from an environmental and economic point of view, the BNR process is an interesting method for treating wastewater with high concentrations of ammonia nitrogen.

According to the different concentrations of ammonia nitrogen in wastewater, wastewater can be divided into three categories: high-concentration ammonia nitrogen wastewater (NH3-N>500 mg L), medium concentration ammonia nitrogen wastewater (NH3-N50-500 mg L), and low concentration ammonia nitrogen wastewater (NH3-N<50 mg L). However, the high concentration of ammonia nitrogen wastewater has an inhibitory effect on the activity of microorganisms, which restricts the application and effect of biochemical treatment, and reduces the degradation efficiency of organic pollutants in the biochemical system, resulting in the difficulty of meeting the requirements of the treated effluent.

The main methods for removing ammonia nitrogen are: physical, chemical and biological methods. The physical method includes reverse osmosis, distillation, soil irrigation and other treatment technologies; The chemical method includes ion exchange, ammonia blowing, point chlorination, incineration, chemical precipitation, catalytic cracking, electrodialysis, electrochemistry and other treatment technologies; Biological processing technologies include algae farming, biological nitrification, and immobilized biotechnology.

At present, the more practical methods are: breakpoint chlorination method, selective ion exchange method, ammonia blowing method, biological method and chemical precipitation method.

Processes such as air stripping, blowing, nitrification and denitrification, and short-range denitrification.

You can first use the physicochemical method, add phosphoric acid and magnesium oxide, and react with ammonia to precipitate.