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Treatment method for wastewater containing high-concentration organic phosphorus

A treatment method, organic phosphorus technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as wastewater treatment not up to standard, achieve stable operation, simple and convenient operation , good processing effect

Active Publication Date: 2015-01-28
山东益源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to overcome the problem of non-compliance in the treatment of organic phosphorus wastewater containing high concentration and complex components in the prior art, and provides a method that can not only remove organic phosphorus but also reduce COD, and has simple and convenient operation, stable operation and good treatment effect. A kind of treatment method of waste water containing high concentration organophosphorus

Method used

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  • Treatment method for wastewater containing high-concentration organic phosphorus

Examples

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Effect test

Embodiment 1

[0029] The wastewater produced by a water treatment agent manufacturer contains more than 20 kinds of organic phosphorus scale and corrosion inhibitors, with a COD of about 3000 mg / L and a total phosphorus of about 1200 mg / L.

[0030] Add calcium hydroxide emulsion to the coagulation sedimentation tank 1 to adjust the pH value of the wastewater to 9.0, add a calcium chloride solution with a Ca / P equivalent ratio of 0.1 times, continue stirring for 40 minutes, and add 2 ppm of anionic PAM with a content of 0.1%. solution, stir evenly, settle on the inclined plate for 2 hours, and the effluent enters the fenton oxidation pool.

[0031]Use sulfuric acid to adjust the pH value to 3.5 in the outlet water, add ferrous sulfate heptahydrate at an amount of 1.2g / L, add 30% hydrogen peroxide at an amount of 2ml / L, stir and react for 80min, and the outlet water enters the coagulation sedimentation tank 2. Add sodium hydroxide solution to the wastewater to adjust the pH value to 9.0 to pr...

Embodiment 2

[0037] The wastewater produced by a water treatment agent manufacturer contains more than 20 kinds of organic phosphorus scale and corrosion inhibitors, with a COD of about 3000 mg / L and a total phosphorus of about 1200 mg / L.

[0038] Add calcium hydroxide emulsion to the coagulation sedimentation tank 1 to adjust the pH value of the wastewater to 9.5, add a calcium chloride solution with a Ca / P equivalent ratio of 0.1 times, continue stirring for 60 minutes, and add 2ppm of anionic PAM with a content of 0.1%. The solution was stirred evenly, the inclined plate settled for 2 hours, and the effluent entered the fenton oxidation pool.

[0039] Use sulfuric acid to adjust the PH value to 4.0 in the outlet water, add ferrous sulfate heptahydrate at an amount of 1.5g / L, add 30% hydrogen peroxide at an amount of 2.2ml / L, stir and react for 65min, and the outlet water enters the coagulation sedimentation tank 2. Add sodium hydroxide solution to the wastewater to adjust the pH value t...

Embodiment 3

[0045] The wastewater produced by a water treatment agent manufacturer contains more than 20 kinds of organic phosphorus scale and corrosion inhibitors, with a COD of about 3000 mg / L and a total phosphorus of about 1200 mg / L.

[0046] Add calcium hydroxide emulsion to the coagulation sedimentation tank 1 to adjust the pH value of the wastewater to 10, add a calcium chloride solution with a Ca / P equivalent ratio of 0.1 times, continue stirring for 40 minutes, and add 2ppm of anionic PAM with a content of 0.1%. The solution was stirred evenly, the inclined plate settled for 2 hours, and the effluent entered the fenton oxidation pool.

[0047] Adjust the pH value of the effluent to 3.5 with sulfuric acid, add ferrous sulfate heptahydrate at an amount of 3g / L, add 30% hydrogen peroxide at an amount of 4ml / L, stir and react for 70min, and the effluent enters the coagulation sedimentation tank 2. Add sodium hydroxide solution to the wastewater to adjust the pH value to 8.0 to produc...

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Abstract

The invention discloses a treatment method for wastewater containing high-concentration organic phosphorus against the wastewater produced by a water treatment agent enterprise, which contains dozens of organic phosphorus scale inhibitors and corrosion inhibitors. Outlet water can stably achieve the requirements of a water pollutant comprehensive emission standard through the following design: the wastewater with high-concentration organic phosphorus firstly passes through 'a coagulation and sedimentation tank 1, a fenton oxidation tank and a coagulation and sedimentation tank 2' for pretreatment, further enters 'anaerobic, anoxic, aerobic and sedimentation tank' biochemical treatment systems and finally passes through 'coagulation and sedimentation tank 3, biological activated carbon powder tank, sedimentation tank, reverse mineral sand filter tank and clear water tank' post-treatment systems. The treatment method disclosed by the invention solves the industrial difficult problem that the treatment of the wastewater containing high-concentration organic phosphorus, which has complex components and high content of organic phosphorus, does not achieve the standard; furthermore, the treatment effect of the method is stable, and the operation cost is economic and reasonable; and in addition, a precipitate taking calcium phosphate as a main component, which is produced in the coagulation and sedimentation tank, can be sent into a phosphate fertilizer plant as a raw material for producing a phosphate fertilizer.

Description

technical field [0001] The invention belongs to the field of environmental protection sewage treatment, and in particular relates to a treatment method for high-concentration organic phosphorus-containing wastewater. Background technique [0002] Phosphorus is widely used in chemical production, especially in the production of water treatment agents and pesticides. Since these phosphorus chemical companies produce products containing organic phosphorus, both production wastewater and ground flushing water contain high organic phosphorus and a small amount of inorganic phosphorus. phosphorus. At present, these phosphorus chemical enterprises have become the targets of supervision by the environmental protection department because their wastewater treatment is not up to standard, which not only pollutes the environment but also restricts the development and survival of enterprises. [0003] At present, there are many patents and literature reports on the removal method of org...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/30
Inventor 汤爱华韦芳王浩张辉宋静
Owner 山东益源环保科技有限公司
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