Treatment technology and system of organic waste water with high concentration

Abstract

The invention relates to a treatment technology and system of organic waste water with high concentration. The technology comprises a biochemical treatment process and an advanced treatment process, and the biochemical treatment process is set before the advanced treatment process, wherein the biochemical treatment process is used for conducting biodegradation on the waste water; the advanced treatment process comprises the following steps that S1, the discharged water after the biochemical treatment process is subjected to super magnetic separation, and dephosphorization and turbid descendingare conducted on the waste water; S2, after super magnetic separation is completed, the discharged water flows into filtering equipment for filtering, so that the concentration of suspended matters in the discharged water after filtering is less than or equal to 10 mg / L; S3, after filtering, SMRES resin is adopted for adsorbing the discharged water. The technology adopts the method which combinesthe biochemical treatment process and the advanced treatment process for treating the organic waste water with the high concentration, not only can the removal rate of COD and NH3-N in the waste water be effectively increased to strengthen the effect of treating the waste water, but also the technology is applicable to printing and dyeing waste water, papermaking feedwater, electroplating wastewater and other high-concentration organic waste water of different types, and the effect of treating coking waste water is especially significant.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment engineering, in particular to a high-concentration organic wastewater treatment process and system. Background technique [0002] High-concentration organic wastewater contains a large amount of carbohydrates, fats, proteins, cellulose and other macromolecular organic substances. Its main characteristics are: ①The concentration of organic pollutants is high, and the COD value is generally above 2000mg / L, and some even reach tens of thousands or even several 100,000 mg / L; ②The composition is very complex and difficult to degrade, usually containing toxic substances such as aromatic compounds and heterocyclic compounds, and may also be accompanied by sulfides, nitrides, heavy metals, and toxic organic substances; ③High-concentration organic wastewater The chroma is very high, often accompanied by irritating odors such as stench, which will cause adverse effects on the surrounding enviro...

AI Technical Summary

Problems solved by technology

[0002] High-concentration organic wastewater contains a large amount of carbohydrates, fats, proteins, cellulose and other macromolecular organic substances. Its main characteristics are: ①The concentration of organic pollutants is high, and the COD value is generally above 2000mg / L, and some even reach tens of thousands or even several 100,000 mg / L; ②The composition is very complex and difficult to degrade, usually containing toxic substances such as aromatic compounds and heterocyclic compounds, and may also be accompanied by sulfides, nitrides, heavy metals, and toxic organic substances; ③High-concentration organic wastewater High chroma, often accompanied by irritating odors such as stench, causing adverse effects on the surrounding environment; ④ High concentration organic wastewater has a relatively high pH and is often strongly corrosive

[0003] High-concentration organic wastewater is very harmful to the environment, mainly in the following aspects: first, the hazard of oxygen consumption, organic pollutants consume most of the oxygen in the water during the biodegradation process, resulting in water hypoxia , resulting in the death of aquatic animals and plants, resulting in stench; followed by sensory pollution, organic wastewater will have a great impact on the normal life of residents near the water body; and toxic hazards, high-concentration organic wastewater contains a lot of toxic organic substances , causing serious pollution to water bodies and soil due to years of accumulation and threatening human health

[0004] Then, in the prior art, in the field of wastewater treatment, most of the treatment of high-concentration organic wastewater is directly treated by traditional biochemical systems; for high-concentration organic wastewater, it is difficult to achieve good treatment effects, and the most prominent The removal rate of COD by the biochemical system is generally below 80%, and the removal rate of NH3-N is low, so it is difficult to meet the national standard discharge

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