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Urban sewage full-membrane treatment method

A technology for urban sewage and membrane treatment, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of inability to remove heavy metals, poor treatment effect, and inability to remove impurities in sewage. , to improve the effect of sewage treatment, increase the service life, and ensure the effect of normal working conditions

Pending Publication Date: 2022-07-29
STATE GRID HEBEI ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, most of the existing full-membrane treatments have poor treatment effects, cannot remove heavy metals in water, and cannot remove impurities in sewage, and cannot meet the requirements of sewage reuse. However, the above-mentioned disclosed patents are still not effective at the same time. Removal of organic matter in urban sewage and the utilization of sludge resources in the process of sewage treatment, so it is necessary to provide an urban sewage treatment method of a full-film treatment method for urban sewage

Method used

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  • Urban sewage full-membrane treatment method

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Embodiment 1

[0036] see Figure 1-5 , an embodiment provided by the present invention: a full-film treatment method for urban sewage, comprising the following steps:

[0037] Step 1, the urban sewage is discharged into the sedimentation tank of the treatment tank through the sewage discharge pipe for sedimentation;

[0038] Step 2, the sewage in the sedimentation tank is deposited for a period of time and then discharged into the biological treatment tank for treatment, and the mud in the sedimentation tank is dehydrated;

[0039] Step 3, adding chemicals to the sewage treated by the biological treatment tank for coagulation and sedimentation, and after filtration, the water is sterilized;

[0040] Step 4, using the connecting pipe to flow the sterilized sewage into the membrane bioreactor to achieve deep purification of the sewage;

[0041] Step 5, landfill the dehydrated mud;

[0042] In step 6, the purified water in step 4 is sent to the reverse osmosis water treatment equipment, and...

Embodiment 2

[0048] see Figure 4 , is another preferred embodiment of the present invention, which has the implementation contents of the above-mentioned embodiments, wherein, for the specific implementation of the above-mentioned embodiments, please refer to the above-mentioned descriptions, and the embodiments here will not be repeated in detail; In the example, the difference between it and the above-mentioned embodiment is:

[0049] In this embodiment, the tops of both ends of the filter screen 21 are fixedly connected with locking blocks 23 , and the outer walls of both sides of the hollow cylinder 20 are fixedly connected with vertical plates 24 . One side of the tightening block 23 is provided with a positioning groove corresponding to the positioning rod 25; in particular, by sliding the positioning rod 25 into the positioning groove on the locking block 23, it is convenient to disassemble and assemble the filter screen 21, instead of the traditional screw fixing The method is mo...

Embodiment 3

[0051] see Figure 5 , is another preferred embodiment of the present invention, which has the implementation contents of the above-mentioned embodiments, wherein, for the specific implementation of the above-mentioned embodiments, please refer to the above-mentioned descriptions, and the embodiments here will not be repeated in detail; In the example, the difference between it and the above-mentioned embodiment is:

[0052] In this embodiment, the medicinal water in step 3 is a flocculant, including 2-10 parts of polyvinyl alcohol solution, 67 parts of large-density granular powder, and 50 parts of inorganic flocculant fine powder.

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Abstract

The invention discloses an all-membrane treatment method for municipal sewage. The all-membrane treatment method comprises the following steps: step 1, discharging the municipal sewage into a treatment tank and a sedimentation tank through a sewage discharge pipe for sedimentation; 2, sewage in the sedimentation tank is discharged into a biological treatment tank to be treated after being settled for a period of time, and slurry in the sedimentation tank is subjected to dehydration treatment; step 3, adding chemicals into the sewage treated by the biological treatment tank for coagulating sedimentation, filtering, and sterilizing to obtain water; 4, the disinfected sewage flows into a membrane bioreactor through a connecting pipe, and deep purification of the sewage is achieved; step 5, carrying out landfill on the dehydrated slurry; and step 6, feeding the water purified in the step 4 into reverse osmosis water treatment equipment, and completely isolating a large amount of impurities mixed in the water by the reverse osmosis water treatment equipment. According to the urban sewage full-membrane treatment method, the sewage treatment effect is improved, most of heavy metals in water can be removed, the purpose of softening water is achieved, and the membrane bioreactor can achieve deep purification of sewage.

Description

technical field [0001] The invention relates to the related field of urban sewage treatment, in particular to a full-film treatment method of urban sewage. Background technique [0002] Urban sewage is generally collected by urban pipelines and discharged into water bodies after being treated by urban sewage treatment plants. In addition to containing a large amount of organic matter, germs and viruses in urban sewage, due to the high development of industry, the water quality of industrial wastewater (about 60-80% of the total urban sewage) is becoming more and more complex and the pollution of runoff sewage is becoming more and more serious. Contains various types and degrees of various toxic and harmful pollutants. [0003] For example, Chinese Patent 201310654721.X discloses a process method for sewage treatment, which specifically discloses a process method for sewage treatment. Take a water sample of 1000 mL, add lime emulsion to stir, add coagulant to stir, and then ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/52C02F1/001C02F2001/007C02F1/441C02F3/1268
Inventor 张立军刘克成曾四鸣郁金星石荣雪王颖楠
Owner STATE GRID HEBEI ELECTRIC POWER RES INST
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