Device and method for treating fluorine-containing, ammonia-nitrogen-containing and phosphorus-containing wastewater

A technology of treatment device and treatment method, which is applied in the directions of neutralized water/sewage treatment, reduced water/sewage treatment, oxidized water/sewage treatment, etc., which can solve the problems of unsuitable removal of fluoride, ammonium nitrogen, total phosphorus, inability to handle ammonia nitrogen, and complicated process flow and other problems, to achieve the effect of stable treatment effect, reduced sludge output, and short process flow

Pending Publication Date: 2020-11-20
贵州中车绿色环保有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, the steam stripping method and membrane separation method used for the removal of ammonia nitrogen have the disadvantages of high energy consumption, low efficiency, and the need for further treatment of concentrated water after separation. However, there are lime method and membrane separation method for the removal of fluoride and total phosphorus. etc., the existing problem is that the lime dosage is large, and the ammonia nitrogen cannot be treated, and the concentrated water separated by the membrane needs secondary treatment, so it is very important to develop a simple and efficient process for the treatment of fluorine-containing ammonia nitrogen-containing phosphorus wastewater significance
[0003] In the prior art, the invention patent application with the application number CN2019

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  • Device and method for treating fluorine-containing, ammonia-nitrogen-containing and phosphorus-containing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Experimental Example 1

[0049] The fluoride concentration = 30mg / L, ammonia = 25mg / L, TP = 190mg / L, the amount of water 250m 3 / H ammonia fluorine waste water containing the phosphorus-containing, phosphorus-containing ammonia-containing waste water processing apparatus by the above-described fluorine-containing, by administration of calcium hydroxide and sodium hypochlorite, pH was adjusted to 10, the pH was adjusted by stirring the reaction time was 70min. Reduction into the pool Houjiaruya sulfate reduction, while the chlorine content of online monitoring, the reduction cell exit added 1400w formula polyacrylamide. To be cut into a cyclone reactor integrated water purifier, the suspension clarified, Sedimentation, acid neutralization, filtration adsorption effluent discharged directly measured amount of sludge 20m 3 / H, accounting for 8% of the sludge, 3.4% of total solids, fluoride water = 7.56mg / L, ammonia = 4.68mg / L, TP = 0.198mg / L.

Example Embodiment

[0050] Experiment 2

[0051] The fluoride concentration = 20mg / L, ammonia = 33.6mg / L, TP = 180mg / L, the amount of water 280m 3 / H ammonia fluorine waste water containing the phosphorus-containing, phosphorus-containing ammonia-containing waste water processing apparatus by the above-described fluorine-containing, by administration of calcium hydroxide and calcium hypochlorite, pH was adjusted to 10.9, the pH was adjusted by stirring the reaction time was 60min. After restoration of the pool into the reduction of sodium thiosulfate, while the chlorine content of online monitoring, the reduction cell exit added 1600w formula polyacrylamide. To be cut into a cyclone reactor integrated water purifier, the suspension clarified, Sedimentation, acid neutralization, filtration adsorption effluent water discharged directly measured amount of sludge 31.6m 3 / H, accounting for 9.2% of sludge, a total solids of 2.5%, a fluoride water = 4.15mg / L, ammonia = 4.81mg / L, TP = 0.18mg / L...

Example Embodiment

[0052] Experiment 3

[0053] The fluoride concentration = 50mg / L, ammonia = 40mg / L, TP = 200mg / L, the amount of water 260m 3 / H ammonia fluorine waste water containing the phosphorus-containing, phosphorus-containing waste water processing apparatus by the above-described ammonia-containing fluorine, by adding sodium hypochlorite and calcium oxide, adjusted to pH 10.5, stirring the reaction after pH adjustment time is 90min. Reduction into the pool Houjiaruya sulfate reduction, while the chlorine content of online monitoring, the reduction cell exit added 1500w formula polyacrylamide. To be cut into a cyclone reactor integrated water purifier, the suspension clarified, Sedimentation, acid neutralization, filtration adsorption effluent discharged directly measured amount of sludge 20m 3 / H, accounting for 11% of the sludge, a total solids of 2.8%, a fluoride water = 6.32mg / L, ammonia = 3.79mg / L, TP = 0.205mg / L.

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Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to a device and a method for treating fluorine-containing, ammonia-nitrogen-containing and phosphorus-containing wastewater. The device for treating fluorine-containing, ammonia-nitrogen-containing and phosphorus-containing wastewater comprises a reaction tank, a reduction tank and an integrated water purifier which are connected in sequence, and a matched sludge treatment system and a dosing device; all the devices are connected in sequence through pipelines; the reaction tank is provided with threegrids, and baffling connection is adopted; and an alkali regulating agent and an oxidizing agent are adopted in the reaction tank to achieve a synergistic effect, so that the reaction speed and the reaction degree are increased, the consumption of chemicals is reduced, and the sludge yield is reduced. The device is mainly used for treating fluorine ammonia nitrogen total phosphorus wastewater with medium or low concentration, ensures efficient and stable effluent, reduces the dosage of chemicals, and shortens the reaction time.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment device and a treatment method for wastewater containing fluorine, ammonia, nitrogen and phosphorus. Background technique [0002] The concentration of fluoride, ammonia nitrogen, and total phosphorus in the wastewater discharged by phosphorus chemical enterprises is relatively high, and the wastewater is more harmful. Wastewater containing phosphorus and ammonia nitrogen will cause eutrophication of water bodies. At present, the steam stripping method and membrane separation method used for the removal of ammonia nitrogen have the disadvantages of high energy consumption, low efficiency, and the need for further treatment of concentrated water after separation. For the removal of fluoride and total phosphorus, there are lime method and membrane separation method. etc., the existing problem is that the lime dosage is large, and the ammonia nitr...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/10C02F101/14C02F101/16
CPCC02F1/001C02F1/56C02F1/66C02F1/70C02F1/72C02F9/00C02F2101/105C02F2101/14C02F2101/16
Inventor 魏晓晴曹旭涂刚夏君赵相美周世强邹银洪
Owner 贵州中车绿色环保有限公司
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