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Method for treating comprehensive wastewater in rare-earth industrial park by utilizing biochemical pool

An industrial park, comprehensive wastewater technology, applied in chemical instruments and methods, biological water/sewage treatment, filtration treatment, etc., can solve problems such as poor treatment effect, achieve low cost, broad market application value, and good treatment effect.

Inactive Publication Date: 2016-08-17
SICHUAN GERUISI ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among the existing A2O biochemical pool technologies for sewage treatment, technologies with nitrogen and phosphorus removal functions are more common, but when these technologies are applied to the comprehensive wastewater treatment of rare earth industrial parks, the treatment effect is poor

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  • Method for treating comprehensive wastewater in rare-earth industrial park by utilizing biochemical pool

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Effect test

Embodiment 1

[0026] A method for treating comprehensive wastewater in a rare earth industrial park by using a biochemical pool:

[0027] (1) Pretreatment: Pass the comprehensive wastewater of the rare earth industrial park through coarse screens, fine screens, cyclone sedimentation tanks and multi-stage chemical sedimentation tanks in order to remove floating, suspended matter, colloids and heavy metals in the sewage;

[0028] (2) Primary treatment: pass the comprehensive wastewater of the rare earth industrial park treated in step (1) through the anaerobic zone, regulating zone 1, anoxic zone, regulating zone 2 and aerobic zone of the biochemical pool in sequence, and in the anaerobic zone The residence time is 0.5h, the residence time in regulation zone 1 is 0.5h, the residence time in anoxic zone is 3h, the residence time in regulation zone 2 is 0.5h, and the residence time in aerobic zone is 5h. Pool, for mud-water separation, part of the settled sludge is returned to the adjustment ar...

Embodiment 2

[0032] A method for treating comprehensive wastewater in a rare earth industrial park by using a biochemical pool:

[0033] (1) Pretreatment: Pass the comprehensive wastewater of the rare earth industrial park through coarse screens, fine screens, cyclone sedimentation tanks and multi-stage chemical sedimentation tanks in order to remove floating, suspended matter, colloids and heavy metals in the sewage;

[0034] (2) Primary treatment: pass the comprehensive wastewater of the rare earth industrial park treated in step (1) through the anaerobic zone, regulating zone 1, anoxic zone, regulating zone 2 and aerobic zone of the biochemical pool in sequence, and the residence time in the anaerobic zone is 0.7h, the residence time in regulation zone 1 is 0.7h, the residence time in anoxic zone is 4h, the residence time in regulation zone 2 is 0.7h, and the residence time in aerobic zone is 6h. The denitrification, phosphorus removal and organic matter removal are carried out, and then...

Embodiment 3

[0038] A method for treating comprehensive wastewater in a rare earth industrial park by using a biochemical pool:

[0039] (1) Pretreatment: Pass the comprehensive wastewater of the rare earth industrial park through coarse screens, fine screens, cyclone sedimentation tanks and multi-stage chemical sedimentation tanks in order to remove floating, suspended matter, colloids and heavy metals in the sewage;

[0040] (2) Primary treatment: pass the comprehensive wastewater of the rare earth industrial park treated in step (1) through the anaerobic zone, regulating zone 1, anoxic zone, regulating zone 2 and aerobic zone of the biochemical pool in sequence, and the residence time in the anaerobic zone is 0.6h, the residence time in regulation zone 1 is 0.6h, the residence time in anoxic zone is 3.6h, the residence time in regulation zone 2 is 0.5h, the residence time in aerobic zone is 6h. , for mud-water separation, part of the sedimented sludge is returned to the adjustment zone ...

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Abstract

The invention provides a method for treating comprehensive wastewater in a rare-earth industrial park by utilizing a biochemical pool. The method comprises the following steps: pretreatment, namely sequentially enabling comprehensive wastewater in a rare-earth industrial park to pass through a coarse screen, a fine screen, a rotational flow sedimentation tank and a multi-stage chemical sedimentation tank; primary treatment, namely sequentially enabling the comprehensive wastewater treated in the step (1) to pass through an anaerobic zone, a regulation zone 1, an anoxic zone, a regulation zone II and an aerobic zone to carry out denitrification, dephosphorization and organic matter removing treatment, and passing through a secondary sedimentation tank to separate slurry and water; and secondary treatment, namely enabling the comprehensive wastewater in the rare-earth industrial park after primary treatment to flow through a continuous sand-filter, and performing ultraviolet disinfection. The sewage treatment method is simple and low in cost, is used for treating the comprehensive wastewater by combining pretreatment and continuous sand-filter process, and has a good treatment effect; and the pollution parameter of the treated wastewater can reach the standard. The method is environment-friendly, does not have pollution, and has a wide market application value.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a method for treating comprehensive wastewater in a rare earth industrial park by utilizing a biochemical pool. Background technique [0002] Since the "Eleventh Five-Year Plan", the Ministry of Environmental Protection has carried out the work of controlling the total amount of major pollutants in the country. Sewage treatment facilities have become the main means of controlling point source emissions such as domestic sources and industrial sources. An important means of bringing about environmental problems. The effective collection and treatment of industrial production wastewater and urban domestic sewage is an important basis for reducing pollutant discharge and controlling regional environmental governance. With the acceleration of my country's urbanization process, the construction of sewage treatment facilities has also embarked on the road of rapid development. Accordin...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F1/32C02F1/38C02F1/52C02F1/66C02F3/302C02F3/308C02F2101/105C02F2101/16C02F2101/20C02F2101/30C02F2301/046C02F2301/08C02F2303/04
Inventor 王超雷弢
Owner SICHUAN GERUISI ENVIRONMENT TECH CO LTD
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