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High-concentration difficultly degraded chemical waste water treatment method

A technology of chemical wastewater and treatment process, which is applied in the direction of special compound water treatment, oxidized water/sewage treatment, multi-stage water treatment, etc., to achieve the effect of strong treatment capacity, good treatment efficiency and complete process flow

Active Publication Date: 2016-10-26
江西沃邦兴环保科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] At present, it is difficult to meet the chemical synthesis pharmaceutical industry water pollutant discharge standard (GB21904-2008) for the treatment of chemical synthesis pharmaceutical wastewater with high concentration, deep color, complex composition and difficult biochemical degradation.

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  • High-concentration difficultly degraded chemical waste water treatment method

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] see figure 1 , in an embodiment of the present invention, a treatment process for high-concentration refractory chemical wastewater, comprising the following steps:

[0019] (1) Collect high COD wastewater in the first regulating pool, collect high COD and high ammonia nitrogen wastewater in the second regulating pond, and collect domestic sewage in the third regulating pond;

[0020] (2) The wastewater from the second regulating tank is raised to the ...

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Abstract

The invention discloses a high-concentration difficultly degraded chemical waste water treatment method. The method comprises 1, waste water collection, 2, pH adjustment and preliminary removal of high-concentration ammonia nitrogen in waste water, 3, deposition separation, feeding of the supernatant into a first iron-carbon Fenton reaction pool and mixing of the supernatant and waste water in a first adjustment tank, 4, hydrochloric acid-based pH adjustment, addition of hydrogen peroxide and ferrous sulphate into the first iron-carbon Fenton reaction pool, mixing of product water and domestic sewage and feeding of the mixture into an anaerobic pond, 5, treatment in the anaerobic pond and lifting of the product water to an A / O integrated tank, 6, treatment on the product water in a second iron-carbon Fenton reaction pool, deposition, supernatant pH adjustment, treatment in a sodium hypochlorite reaction tank and feeding of the product water into a BAF biological aeration filter tank, and 7, treatment on the product water from the BAF biological aeration filter tank through UV high-grade equipment, treatment in a sedimentation basin and discharge of the supernatant into a total discharge opening. The method has high impact resistance, a high treatment capability, a complete process and good treatment efficiency.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a treatment process for high-concentration refractory chemical wastewater. Background technique [0002] Wastewater treatment is the use of physical, chemical and biological methods to treat wastewater, purify wastewater, reduce pollution, and achieve wastewater recovery and reuse, making full use of water resources. The wastewater treatment method that separates and recovers insoluble suspended pollutants (including oil film and oil beads) in wastewater by physical action can be divided into gravity separation method, centrifugal separation method and sieve retention method. Treatment based on the principle of heat exchange also belongs to physical treatment. A wastewater treatment method that separates and removes dissolved and colloidal pollutants in wastewater or converts them into harmless substances through chemical reactions and mass transfer. In the chemical treatmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/32C02F1/52C02F1/66C02F1/72C02F1/722C02F1/766C02F3/02C02F3/28C02F3/30C02F9/00C02F2101/16C02F2101/322C02F2101/38C02F2103/343C02F2301/08C02F2305/026
Inventor 王白杨刘英辉
Owner 江西沃邦兴环保科技有限公司
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