High-concentration organic wastewater treatment method and equipment special for same

A technology for organic wastewater treatment and special equipment, which is applied in multi-stage water treatment, water/sewage treatment, water treatment parameter control, etc. System impact and other problems, to achieve good resistance to hardening and passivation, saving pharmaceutical costs, and cost-saving effects

Active Publication Date: 2017-02-22
江苏鑫林环保设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the large-scale sewage treatment system is mainly based on biochemical treatment. Due to the high content of these refractory organic substances, the biodegradability of sewage is very poor, and the influent is difficul

Method used

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  • High-concentration organic wastewater treatment method and equipment special for same
  • High-concentration organic wastewater treatment method and equipment special for same

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preparation example Construction

[0036] The preparation method of Fe / Al / C multi-component micro-electrolytic filler may include the following steps: mixing iron powder, activated carbon, aluminum and bentonite in proportion and adding a certain amount of distilled water to granulate, wherein the ratio of iron powder, activated carbon and aluminum is preferably 3 : 1:1; The regular granules obtained by granulation are placed in a sealed container, and an inert gas such as nitrogen is introduced, and the regular granules are cured under anaerobic conditions for 4 hours; ) under the protection of the regular particle roasting 4h, natural cooling, to obtain Fe / Al / C multi-element micro-electrolytic filler.

[0037] After being treated by the micro-electrolysis reactor 2, the wastewater enters the Fenton reactor 3, and the dosing system 8 adds hydrogen peroxide to the Fenton reactor 3. A large amount of ferrous ions are formed during the multi-element micro-electrolysis reaction process, and enter the Fenton treatme...

Embodiment 1

[0041] The method and the special equipment of the invention are used to treat the effluent of the primary air flotation tank of oil refinery wastewater. Fe / Al / C micro-electrolysis filler is filled in the micro-electrolysis reactor 1, the particle size of the filler is 20 mm, and the mass ratio of Fe, Al, and C in the filler is preferably 3:1:1.

[0042] The COD in the refinery wastewater sample to be treated is 340-430mg / L, and the BOD 5 It is 76~95mg / L. The refinery wastewater enters the micro-electrolysis reactor 2 through the peristaltic pump 10, and is discharged from the secondary sedimentation tank 7 after being treated by the method, and the discharged wastewater water samples are tested.

[0043] The experimental conditions are micro-electrolysis section: pH 3, auxiliary electrolyte 0.05mol / L, hydraulic retention time 80min, no aeration; Fenton section: H 2 o 2 The dosing concentration is 1.5ml / L, the pH is 3-4, and the reaction time is 60min; AF-BAF section: anaer...

Embodiment 2

[0046] The pesticide production wastewater is treated by the method and the special equipment of the invention. Fe / Al / C micro-electrolysis filler is filled in the micro-electrolysis reactor 1, the particle size of the filler is 10 mm, and the mass ratio of Fe, Al, and C in the filler is preferably 3:1:1.

[0047] The initial COD value in the pesticide production wastewater sample was 2026-2215mg / L.

[0048] The experimental conditions are micro-electrolysis section: pH 3, auxiliary electrolyte 0.05mol / L, hydraulic retention time 100min, no aeration; Fenton section: H 2 o 2 The dosing concentration is 1.5ml / L, the pH is 3-4, and the reaction time is 80min; AF-BAF section: anaerobic filter column DO is less than 0.5mg / L, aerobic filter column DO2.0-4.0mg / L, hydraulic The residence time is 5+5h.

[0049] After the system has been debugged and operated continuously under this condition for 10 days, the removal rate of COD in the effluent is stable at 92.5%-94.2%, and the averag...

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Abstract

The invention discloses a high-concentration organic wastewater treatment method and equipment special for the same. The wastewater treatment method includes: adjusting pH of organic wastewater to be treated to acidic; subjecting the organic wastewater sequentially to microelectrolysis treatment, Fenton reagent treatment, flocculation precipitation, anaerobic biological treatment and aerobic biological treatment; subjecting treated wastewater to coagulating precipitation, and discharging supernatant, wherein a regularized Fe/Al/C multi-element microelectrolysis filler is adopted in the microelectrolysis treatment process. The equipment comprises a pH adjusting tank, a microelectrolysis reactor, a Fenton reactor, a flocculation precipitation tank, an anaerobic filter column, an aerobic filter column and a secondary precipitation tank which are connected sequentially, and further comprises a reagent adding system adding a pH adjuster and hydrogen peroxide respectively into the pH adjusting tank and the Fenton reactor, and the microelectrolysis reactor is filled with the regularized Fe/Al/C multi-element microelectrolysis filler. By adopting the wastewater treatment method and the equipment, biodegradability of the wastewater can be improved greatly, and quality of outgoing water can be improved remarkably.

Description

technical field [0001] The invention relates to a wastewater treatment method and treatment equipment, in particular to a high-concentration organic wastewater treatment method and special equipment for the method. Background technique [0002] With the development of the economy, a large number of man-made organic substances have appeared in all walks of life. These substances are mostly difficult to biodegrade and toxic and harmful substances. These substances enter the water body with the discharge of sewage, seriously polluting the water environment. Such as printing and dyeing wastewater, pharmaceutical wastewater, electroplating wastewater, coking wastewater and other organic synthetic chemical industrial wastewater, the pollutants in this kind of wastewater mainly include heavy metals, polycyclic aromatic hydrocarbons, nitro compounds, chlorobenzenes and aromatic hydrocarbons, etc. degrade organic matter. [0003] At present, the large-scale sewage treatment system i...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/30
CPCC02F1/46176C02F1/52C02F1/5245C02F1/66C02F1/722C02F1/725C02F3/30C02F9/00C02F2101/30C02F2209/06C02F2209/08C02F2301/08C02F2303/14C02F2305/026
Inventor 杨瑞洪马裕华陈箫声
Owner 江苏鑫林环保设备有限公司
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