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Method for processing sewage to agricultural land water using UAFB reactor

A technology for domestic sewage and farmland water, which is applied in the field of farmland water, can solve the problems of high sewage treatment costs and large consumption, and achieve the effects of maintaining stable pollution indicators, avoiding loss, and increasing production

Inactive Publication Date: 2011-11-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of the existing method of treating domestic sewage into farmland water, which consumes a large amount of electric energy and the cost of sewage treatment is high, and further provides a method for using a UAFB reactor to treat domestic sewage into farmland water

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  • Method for processing sewage to agricultural land water using UAFB reactor
  • Method for processing sewage to agricultural land water using UAFB reactor
  • Method for processing sewage to agricultural land water using UAFB reactor

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specific Embodiment approach 1

[0021] Specific implementation mode one: as figure 1 As shown, the method of utilizing the UAFB reactor to treat domestic sewage into farmland water in this embodiment is realized by the following steps: Step 1, the domestic sewage to be treated passes through the lower end water inlet 1-1-1 of the main body 1 of the UAFB reactor From bottom to top, it enters the inverted cone body 1-2 equipped with coarse filler, the cylinder body 1-3 equipped with main filler and the sedimentation section 1-4, and the volume of the main filler housed in the cylinder body 1-3 is Two-thirds of the volume of cylinder 1-3; step 2, keep the temperature of the domestic sewage to be treated in the main body 1 at 35-37 °C; step 3, keep the domestic sewage to be treated in the main body 1 for 3-4 hours; step Four, be provided with three-phase separator 1-4-1 at settling section 1-4, by three-phase separator 1-4-1, sludge, sewage and gas in the domestic sewage to be treated are separated; Step 5, sep...

specific Embodiment approach 2

[0022] Specific implementation mode two: as figure 1 As shown, the coarse filler in this embodiment is a plastic suspension filler, and the height of the coarse filler is 10 cm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0023] Specific implementation mode three: as figure 2 As shown, the unit particle of the coarse filler in this embodiment is a hollow triangular body with a height of 1 cm formed by inserting three rectangles with length×width=5cm×1cm. Others are the same as in the first embodiment.

[0024] Specific implementation mode four: as figure 1 As shown, the unit particle of the main filler in this embodiment is ring-shaped, the outer diameter of the ring is 10mm, the specific gravity of the main filler is 0.965-0.968, and the specific surface area of ​​the main filler is 3m 2 / g; the specific gravity of the main filler after supporting the film is 0.98. Others are the same as in the first embodiment.

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Abstract

The present invention discloses a method for treating domestic sewage into farming water by a UAFB reactor, and relates to a sewage disposal method. The method solves problem that the prior sewage disposal method requires large electric energy consumption and has high sludge production. The method comprises the following steps: firstly, the domestic sewage to be processed orderly entering from upside down an inverted cone body which is filled with a rough filler, a cylinder body which is filled with a main filler, and a deposition section from a water inlet at the lower end of a body of the UAFB reactor; secondly, keeping the temperature the domestic sewage to be processed in the body between 35 and 35 DEG C, arranging a perforated plate in the cylinder body at the upper part of the main filler, the specific surface area of the main filler being 3m<2> / g, the specific gravity after carrier membrane being 0.98; thirdly, keeping the domestic sewage to be processed in the body for between 3 and 4h; fourthly, performing separation of the sludge, sewage and gas; fifthly, the separated sewage flowing out from a double U-shaped water outlet pipe to irrigate a farm. The method has simple process, reduces infrastructure cost, facilitates the operational management, and is suitable for the underdeveloped towns and rural areas.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a method for treating domestic sewage into farmland water by using a UAFB reactor. Background technique [0002] At present, aerobic methods (such as traditional activated sludge methods) are generally used in my country to treat domestic sewage into farmland water. Although aerobic methods can achieve better treatment results, there are the following problems: 1. The aerobic method needs to treat sewage Oxygenation, oxygenation requires an oxygenation pump, which consumes a lot of electric energy. It is estimated that a sewage plant using the traditional activated sludge method consumes about 75% of the total operating cost of electric energy; 2. The yield of aerobic microorganisms is generally as high as 0.2-0.6kgVSS / kgCOD, so subsequent treatment such as dehydration, safe landfill or incineration of sludge is required, which increases the cost of sewage treatment; 3. The total hydrau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
Inventor 高大文陶彧安瑞任南琪
Owner HARBIN INST OF TECH
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