Water body eutrophication control system and method

A technology for water eutrophication and control system, which is applied in water treatment parameter control, chemical instruments and methods, water/sewage treatment, etc. Low operating cost, guaranteed cleanliness, and remarkable activation effect

Inactive Publication Date: 2019-04-16
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prevention and control of eutrophication is the most complicated and difficult problem in water pollution treatment. On the one hand, due to the complexity of pollution sources, the nitrogen and phosphorus nutrients that lead to eutrophication of water quality have both natural and artificial sources. Exogenous, but also endogenous, brings difficulties to the control of pollution sources; on the other hand, the high difficulty of nutrient removal, so far no single biological, chemical and physical measures can completely remove nitrogen and phosphorus in wastewater Nutrients, and in the prior art, whether it is chemical treatment, physical treatment or any combination of two or more methods in microbial treatment, the system operation process is complicated, the effect is poor, and more energy consumption and operating costs are generated. defect

Method used

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  • Water body eutrophication control system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] S1: The eutrophic water body and the treated water with high sludge concentration at the bottom of the sedimentation tank 2 are pumped into the anaerobic zone 11 through the self-priming pump 3, and then pass through the anoxic zone 12, the aerobic zone 13, the anoxic zone 12, and the aerobic zone Zone 13, sedimentation tank 2, wherein the dissolved oxygen in the anoxic zone is controlled at 0.1mg / L, and the dissolved oxygen in the aerobic zone is controlled at 0.5mg / L;

[0039] S2: The water in the sedimentation tank 2 flows to the microfiltration membrane filter 41 through the outlet, and after removing suspended matter, it enters the hydroxyl iron filter bed 42, and the treated regenerated water flows into the water body through the water distributor 5, where the hydroxyl iron filter The particle size of the bed is less than 3nm, and the water flow rate is 12 bed volumes / hour.

[0040] One month later, the experimental water quality was tested, and the removal rate o...

Embodiment 2

[0042] S1: The eutrophic water body and the treated water with high sludge concentration at the bottom of the sedimentation tank 2 are pumped into the anaerobic zone 11 through the self-priming pump 3, and then pass through the anoxic zone 12, the aerobic zone 13, the anoxic zone 12, and the aerobic zone Zone 13, sedimentation tank 2, wherein the dissolved oxygen in the anoxic zone is controlled at 0.01mg / L, and the dissolved oxygen in the aerobic zone is controlled at 0.7mg / L;

[0043]S2: The water in the sedimentation tank 2 flows to the microfiltration membrane filter 41 through the outlet, and after removing suspended matter, it enters the hydroxyl iron filter bed 42, and the treated regenerated water flows into the water body through the water distributor 5, where the hydroxyl iron filter The particle size of the bed is less than 3nm, and the flow through water is 11 bed volumes / hour.

[0044] One month later, the experimental water quality was tested, and the removal rat...

Embodiment 3

[0046] S1: The eutrophic water body and the treated water with high sludge concentration at the bottom of the sedimentation tank 2 are pumped into the anaerobic zone 11 through the self-priming pump 3, and then pass through the anoxic zone 12, the aerobic zone 13, the anoxic zone 12, and the aerobic zone Zone 13, sedimentation tank 2, wherein the dissolved oxygen in the anoxic zone is controlled at 0.2mg / L, and the dissolved oxygen in the aerobic zone is controlled at 0.8mg / L;

[0047] S2: The water in the sedimentation tank 2 flows to the microfiltration membrane filter 41 through the outlet, and after removing suspended matter, it enters the hydroxyl iron filter bed 42, and the treated regenerated water flows into the water body through the water distributor 5, where the hydroxyl iron filter The particle size of the bed is less than 3nm, and the water flow rate is 10 bed volumes / hour.

[0048] One month later, the experimental water quality was tested, and the removal rate o...

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Abstract

The invention discloses a water body eutrophication control system. The system comprises a bioreactor, a sedimentation tank, a self-priming pump and a filter device. The bioreactor comprises an anaerobic zone and 2-5 levels of anaerobic-aerobic zones connected in series. The last level of aerobic zone is communicated with the sedimentation tank, the sedimentation tank discharges a water body to the filter device through a water discharge hole, and the filter device discharges water to the water body through a water distributor; the self-priming pump sucks the eutrophic water body to the anaerobic zone through a water suction bottom valve, the self-priming pump is connected with the bottom of the sedimentation tank, and treated water with high sludge concentration are sucked up to the anaerobic zone. The invention provides the water body eutrophication control system and method. An improved A2 / O process is adopted for combination with the filter device, the good removal effect of nitrogen and phosphorus in eutrophic water is achieved, and a lot of energy consumption and the operation cost are saved.

Description

technical field [0001] The invention relates to the technical field of water treatment, and more specifically relates to a water body eutrophication control system and method. Background technique [0002] Eutrophication refers to that under the influence of human activities, a large amount of nutrients such as nitrogen and phosphorus required by organisms enter slow-flowing water bodies such as lakes, rivers, bays, etc., causing algae and other plankton to multiply rapidly and dissolve water bodies. Oxygen levels drop, water quality deteriorates, and fish and other organisms die in large numbers. Under natural conditions, lakes also transition from oligotrophic to eutrophic, but this natural process is very slow. However, the eutrophication caused by the artificial discharge of industrial wastewater and domestic sewage containing nutrients can appear in a short period of time. When eutrophication occurs in the water body, planktonic algae multiply in large numbers, formin...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F9/14C02F3/34
CPCC02F1/001C02F1/444C02F1/52C02F3/301C02F3/34C02F9/00C02F2001/007C02F2209/06C02F2209/22C02F2209/40C02F2305/023
Inventor 姜忠峰郭一飞王伟伟宋丰明田长勋高宏斌付红梅周惠民
Owner HENAN UNIV OF URBAN CONSTR
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