Deep waste water treatment system and sewage treatment method

A sewage treatment system and sewage technology, applied in water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as the need for improvement in sewage treatment methods, reduce membrane pollution, reduce Free microorganisms, enhance the effect of mass transfer

Pending Publication Date: 2018-05-08
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current sewage treatment syste...

Method used

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  • Deep waste water treatment system and sewage treatment method
  • Deep waste water treatment system and sewage treatment method
  • Deep waste water treatment system and sewage treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Pretreatment - Ozone Advanced Oxidation Treatment - Membrane Biological (MBR) Combined Treatment

[0106] In this embodiment, various pretreatment methods can be used, such as multi-media filtration, sedimentation, etc. Specifically, coagulation sedimentation and security filtration are taken as examples.

[0107] In this embodiment, a variety of advanced ozone oxidation processes can be used, and the series-parallel connection between each process is not unique. Specifically, the series connection of an ozone packed bed and an ozone fluidized bed is taken as an example.

[0108] 1. Coagulation and sedimentation

[0109] (a) Turn on the agitator in the dosing area with a rotation speed of 300 rpm; turn on the agitator in the reaction area with a rotation speed of 50 rpm.

[0110] (b) Turn on the feed water pump and turn on the dosing pump at the same time.

[0111] 2. Security filtering

[0112] (a) Turn on the feed water pump, and close the drain valve after the wat...

Embodiment 2

[0136] Ozone Packed Bed-MBR-Ozone Fluidized Bed

[0137] This embodiment is suitable if the COD of the MBR effluent is still high, that is: the post-fluidized bed process is adopted:

[0138] There are many options for pre-processing in this embodiment, specifically, take multimedia filtration as an example

[0139] 1. Multi-media filtration

[0140] Quartz sand filter is used for pretreatment, and the medium can be quartz sand, anthracite, granular porous ceramics, manganese sand, etc.

[0141] (a) Open the water inlet valve and outlet valve of the filter, turn on the water inlet pump, and adjust the flow rate within the specified range;

[0142] (b) Two sets of filters are used in turn, one for normal filtration and one for backwashing;

[0143] (c) During the backwash process, first close the water inlet valve and outlet valve, then open the backwash water inlet valve, backwash drain valve and air intake valve, and the cleaning time is about 10-30 minutes.

[0144] 2. O...

Embodiment 3

[0152] Ozone Packed Bed - Ozone Fluidized Bed

[0153] This embodiment is applicable to the situation where the COD concentration of the wastewater is low but the biodegradability is extremely poor.

[0154] Step 1 and step 2 are the same as in Example 1, and coagulation sedimentation and security filtration are performed sequentially.

[0155] 3. Ozone Advanced Oxidation

[0156] 3.1 Packed bed

[0157] This step is the same as in Example 1, and can be processed by a single packed bed or by two parallel packed beds.

[0158] 4. Ozone fluidized bed

[0159] This step processing parameter is with embodiment 1.

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Abstract

The invention discloses a deep waste water treatment system, and concretely provides a sewage treatment system. The sewage treatment system comprises a water inlet box, an ozone fluidized bed treatment unit and a biological membrane combined treatment unit, wherein the ozone fluidized bed treatment unit is connected with the water inlet box; the biological membrane combined treatment unit is connected with the water inlet box and the ozone fluidized bed treatment unit. Therefore the sewage treatment system has the advantages that the structure is simple and compact; the occupied area is small;the sludge expansion rate is low; the mass transfer efficiency is high; the outlet water has higher quality and stability; the film pollution can also be reduced; the energy consumption and the sewage treatment cost are reduced; in addition, the sewage treatment unit can be flexibly selected by the sewage treatment system according to the water quality of coming water; the operation is convenient; the adaptability is high.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an advanced wastewater treatment system, and more specifically to a sewage treatment system and a sewage treatment method. Background technique [0002] With the continuous expansion of population size and the continuous development of social economy, the discharge of urban domestic sewage and industrial sewage also increases, and the load of sewage treatment continues to increase, which requires higher and higher levels of sewage treatment. Microbes can remove soluble and colloidal biodegradable organic matter, phosphorus, nitrogen, etc. in sewage, and have the advantages of high efficiency, low energy consumption, low cost, simple operation, and mild reaction conditions. The ozone catalytic oxidation method uses the hydroxyl radicals (OH) produced by ozone decomposition to oxidize and decompose refractory organic matter in sewage. It has the advantages of strong oxidation abilit...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F2301/08C02F1/725C02F1/78C02F3/02C02F1/44
Inventor 张潇源魏卡佳黄霞曹效鑫梁鹏
Owner TSINGHUA UNIV
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