High-concentration organic wastewater treatment method and system

A technology for organic wastewater treatment and organic wastewater, applied in water/sewage treatment, water treatment parameter control, special compound water treatment, etc., can solve the problems of a large amount of manpower, peculiar smell, complex components, etc., to increase the BOD ratio, treat Stable effect and small footprint

Inactive Publication Date: 2018-03-09
BEIJING ANYUTONG ENVIRONMENT ENG & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, the composition is complex, containing toxic substances. The organic substances in wastewater are mostly aromatic compounds and heterocyclic compounds, and also contain sulfides, nitrides, heavy metals and toxic organic substances.
Third, high chroma and peculiar smell
Even if the most efficient microbial treatment technology is used, because of the chemical composition and structure of the compound itself, in the microbial community, there is no enzyme for the compound to be treated, making it resistant to degradation; the second is that the waste water contains toxic to microorganisms Or substances (organic or inorganic) that can inhibit the growth of microorganisms, so that the organic substances cannot be degraded, requiring a lot of manpower and energy for system cultivation and debugging

Method used

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  • High-concentration organic wastewater treatment method and system

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Embodiment 1

[0032] combine figure 1 , the present embodiment provides a high-concentration organic wastewater treatment method, comprising the following steps:

[0033] Step a. The high-concentration organic wastewater enters the regulating tank, and the residence time of the regulating tank is 12 to 24 hours. The wastewater in the regulating tank is lifted to the coagulation sedimentation tank by the lifting pump;

[0034]The high-concentration wastewater passes through the mechanical rotary grille to intercept the suspended solids and large pieces of floating solids in the wastewater to prevent the clogging of pipes and pumps, and then enters the regulating pool. The residence time of the regulating pool is set to 12~24h, and the water quantity and quality of the wastewater are mixed as fully as possible. Adjust to reduce the impact of water quality on the system. A submersible mixer is installed in the pool for mixing to prevent sedimentation and corrosion. An aeration mixing system i...

Embodiment 2

[0048] On the basis of Example 1, this example provides a method for treating high-concentration organic wastewater, comprising the following steps:

[0049] Step a. The high-concentration organic wastewater enters the regulating tank, and the residence time of the regulating pond is 12 hours, and the wastewater in the regulating pond is lifted to the coagulation sedimentation tank by the lifting pump;

[0050] Step b. The coagulation and sedimentation tank is a partition flocculation tank, and coagulant and flocculant are added to the waste water in the partition flocculation tank for flocculation. The coagulant is polyferric sulfate PFS, and the dosage is 30mg / l, the flocculant is polyacrylamide PAM, the dosage is 5mg / l, the flocculation time is 20min, the flow velocity at the beginning is 0.5m / s, the flow velocity at the end is 0.2m / s, and the net distance between the partitions of the partition flocculation tank is greater than 0.5 m, after flocculation, it settles throug...

Embodiment 3

[0057] This embodiment provides a method for treating high-concentration organic wastewater, comprising the following steps:

[0058] Step a. The high-concentration organic wastewater enters the regulating tank, and the residence time of the regulating pond is 24 hours, and the wastewater in the regulating pond is lifted to the coagulation sedimentation tank by the lifting pump;

[0059]Step b. The coagulation sedimentation tank is a clapboard flocculation tank, and a coagulant and a flocculant are added to the waste water in the clapboard flocculation tank for flocculation. The coagulant is polyferric sulfate PFS, and the dosage is 50mg / l, the flocculant is polyacrylamide PAM, the dosage is 5mg / l, the flocculation time is 30min, the flow velocity at the beginning end is 0.6m / s, the flow velocity at the end is 0.3m / s, and the net distance between the partitions of the partition flocculation tank is greater than 0.5 m, after flocculation, it settles through the inclined plate ...

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Abstract

The invention discloses a high-concentration organic wastewater treatment method. The method adopts coagulation sedimentation, electric catalysis, a Fenton oxidation tower, digestion and neutralization, a UBF anaerobic reactor, a high-load aerobic tank and biochar. The method comprises the following steps: oxidizing toxic substances such as sulfide, cyanide and phenol, turning organic pollutants into charged fragment small molecules to remove the organic pollutants to improve the biodegradability of wastewater, putting the wastewater into the anaerobic reactor for aerobic biological treatment,deeply purifying the wastewater through the biochar, and discharging the wastewater. The invention further discloses a treatment system of high-concentration organic wastewater. The treatment methodand system disclosed by the invention are high in high-concentration organic wastewater treatment efficiency, high in wastewater concentration change adaptability, and good in treatment effect on organic wastewater with high COD concentration, high chromaticity, toxicity and degradation resistance, and can realize continuous and stable operation.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to a method and system for treating high-concentration organic wastewater. Background technique [0002] Biological treatment is the most commonly used process in wastewater treatment. For high-concentration organic wastewater, it is first treated with high-load anaerobic microorganisms to reduce the concentration of organic matter. Row. [0003] High-concentration organic wastewater mainly has the following characteristics: First, the concentration of organic matter is high. COD is generally tens of thousands or even hundreds of thousands mg / L. Relatively speaking, BOD is relatively low, and the ratio of BOD to COD in many wastewaters is less than 0.3. The second is that the composition is complex, and the organic matter in wastewater containing toxic substances is mostly aromatic compounds and heterocyclic compounds, and also contains sulfides, nitrides, heavy me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/18C02F101/20C02F101/30
CPCC02F1/461C02F1/46109C02F1/5245C02F1/56C02F1/66C02F1/722C02F3/10C02F3/28C02F9/00C02F2001/46133C02F2003/003C02F2101/18C02F2101/20C02F2101/30C02F2201/46135C02F2201/4614C02F2201/4615C02F2209/06C02F2209/08C02F2209/22C02F2305/026
Inventor 宣颖邹亚波邹洪波
Owner BEIJING ANYUTONG ENVIRONMENT ENG & TECH
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