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Wastewater treatment method and wastewater treatment system based on sequencing batch membrane biological reaction

A sequencing batch membrane biology and wastewater treatment system technology, applied in biological water/sewage treatment, livestock wastewater treatment, water/sewage treatment, etc. Stability and other issues, to achieve the effect of improving the floc sedimentation performance, reducing the cost of sewage treatment, and improving the floc structure and density

Pending Publication Date: 2020-03-24
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the above research, although the biological treatment unit can achieve a good denitrification effect by using short-range denitrification, due to the high concentration of suspended solids in the influent, the efficiency of the biological treatment process is affected, and the COD (chemical oxygen demand) removal is not up to standard. Unstable water quality and many other problems

Method used

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  • Wastewater treatment method and wastewater treatment system based on sequencing batch membrane biological reaction
  • Wastewater treatment method and wastewater treatment system based on sequencing batch membrane biological reaction
  • Wastewater treatment method and wastewater treatment system based on sequencing batch membrane biological reaction

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Embodiment 1

[0154] In this embodiment, the magnetic coagulation-SMBR combined process is used to treat livestock and poultry breeding wastewater.

[0155] The system for treating high-concentration wastewater in this embodiment includes a water inlet tank, a magnetic coagulation device, an intermediate adjustment water tank, an SMBR reactor, a water outlet tank and a real-time control unit;

[0156] The batches of waste water to be treated in the water inlet tank enter the magnetic coagulation device for magnetic coagulation reaction, and the steps are as follows:

[0157] 1. Add Fe 3 o 4 With the magnetic seed as the main component, stir rapidly at a speed of 400r / min for 1min;

[0158] 2. The dosage of flocculant PAC (polyaluminum chloride) is 0.5g / L, and it is stirred rapidly at a speed of 300r / min for 1.5min;

[0159] 3. The dosage of coagulant PAM (polyacrylamide) is 2.5mg / L, first stir at a speed of 300r / min for 10s, and then stir at a speed of 70r / min for 110s;

[0160] 4. After ...

Embodiment 2

[0171] In this example, the magnetic coagulation-SMBR combined process is used to treat landfill leachate.

[0172] The device for treating high-concentration wastewater of the present invention includes a water inlet tank, a magnetic coagulation device, an intermediate adjustment water tank, an SMBR reactor, a water outlet tank and a real-time control unit;

[0173] The batches of waste water to be treated in the water inlet tank enter the magnetic coagulation device for magnetic coagulation reaction, and the steps are as follows:

[0174] 1. Add Fe 3 o 4 With magnetic seeds as the main component, stir rapidly at a speed of 350r / min for 80s;

[0175] 2. The dosage of flocculant PAC is 1.5g / L, and it is stirred at a speed of 250r / min for 80s;

[0176] 3. The dosage of coagulant PAM is 2mg / L, first stir at a speed of 250r / min for 15s, and then stir at a speed of 60r / min for 100s;

[0177] 4. After standing still for 15 minutes, drain to the middle water tank.

[0178] The ...

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Abstract

The invention discloses a wastewater treatment method and a wastewater treatment system based on a sequencing batch membrane biological reaction. The treatment method comprises the following steps: performing a magnetic coagulation reaction on wastewater to be treated so as to obtain first wastewater; and carrying out a biological denitrification reaction on the first wastewater to allow the firstwastewater to reach the standard, thereby completing wastewater treatment. A magnetic coagulation device provided by the invention is especially innovative for a high-solid-content and high-concentration wastewater pretreatment method, and through addition of magnetic seeds, the structure and density of floc are effectively improved, the precipitation performance of the floc is enhanced, and coagulation treatment effect is improved; and the magnetic coagulation method adopted by the invention can effectively reduce the suspended solid content, COD concentration and total phosphorus concentration of high-solid-content and high-concentration wastewater, and thus reduces the load of a subsequent biological treatment unit.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a waste water treatment method and a waste water treatment system based on a sequential batch type membrane biological reaction. Background technique [0002] Livestock and poultry breeding wastewater has the characteristics of high ammonia nitrogen, low carbon-to-nitrogen ratio, high suspended solids, and complex components. It is difficult to treat, and improper treatment will deteriorate the environment and even endanger human health. [0003] Livestock and poultry farming wastewater includes pig urine, pig manure, feed powder, pig house flushing water, and production water, among which solid pollutants such as feed powder and pig manure make the total solids content (TS) and suspended solids content (SS) of the wastewater up to Thousands or even tens of thousands. These solid substances are difficult to degrade in the biochemical treatment system an...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/20C02F101/30C02F101/16
CPCC02F1/488C02F3/302C02F2101/166C02F2101/16C02F2101/30C02F2103/20C02F2209/04
Inventor 魏源送陈彦霖陈梅雪隋倩雯郁达伟
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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