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Domestic wastewater recovery and treatment method

A domestic sewage, recycling and treatment technology, applied in the direction of biological water/sewage treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of difficulty in meeting the discharge standard of suspended solids, high investment cost of waste water treatment, and large footprint To improve the efficiency of sewage treatment, ensure full contact, and save land resources

Active Publication Date: 2018-06-29
北京尊柯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the process is complicated, not only takes up a lot of land, but also requires high input costs for wastewater treatment; and the indicators of COD and suspended matter in the purified sewage are still difficult to meet the discharge standards

Method used

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  • Domestic wastewater recovery and treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for recycling and treating domestic sewage, including the following steps: (1) After the sewage passes through the flocculation tank and the sedimentation tank, the clean water is raised to the biochemical tank; during the reaction in the flocculation tank, a flocculant needs to be added to the flocculation tank, specifically, the The flocculant is polyaluminum chloride; a mud scraping device 2 is provided in the sedimentation tank, and the sludge deposited on the bottom of the tank is scraped by the mud scraping device; (2) The biochemical tank is continuously aerated and reacted for 1 hour The aeration operation is specifically to pass gas into the biochemical tank through the aerator, and the gas can be called air or oxygen; specifically, the aeration time is 1.2h, and the aeration rate is 10L / h; the biochemical tank is filled with fillers, The filler is made of activated carbon fiber and polyethylene fiber, specifically, the weight ratio of activated carbon ...

Embodiment 2

[0032] A method for recycling and treating domestic sewage, including the following steps: (1) After the sewage passes through the flocculation tank and the sedimentation tank, the clean water is raised to the biochemical tank; during the reaction in the flocculation tank, a flocculant needs to be added to the flocculation tank, specifically, the The flocculant is polyaluminum chloride; the sedimentation tank is provided with a mud scraping device 2, through which the sludge deposited on the bottom of the tank is scraped off; (2) The biochemical tank is continuously aerated and reacted for 2 hours The aeration operation is specifically to pass gas into the biochemical tank through the aerator, and the gas can be called air or oxygen; specifically, the aeration time is 1.8h, and the aeration rate is 20L / h; the biochemical tank is filled with fillers, The filler is made of activated carbon fiber and polyethylene fiber, specifically, the weight ratio of activated carbon fiber and ...

Embodiment 3

[0035] A method for recycling and treating domestic sewage, including the following steps: (1) After the sewage passes through the flocculation tank and the sedimentation tank, the clean water is raised to the biochemical tank; during the reaction in the flocculation tank, a flocculant needs to be added to the flocculation tank, specifically, the The flocculant is polyaluminum chloride; the sedimentation tank is provided with a mud scraping device 2, through which the sludge deposited on the bottom of the tank is scraped off; (2) The biochemical tank is continuously aerated and reacted for 2 hours The aeration operation is specifically to pass gas into the biochemical tank through the aerator, and the gas can be called air or oxygen; specifically, the aeration time is 1.8h, and the aeration rate is 18L / h; the biochemical tank is filled with fillers, The filler is made of activated carbon fiber and polyethylene fiber, specifically, the weight ratio of activated carbon fiber and ...

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PUM

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Abstract

The invention discloses a domestic wastewater recovery and treatment method including steps of: 1) enabling the domestic wastewater to flow through a flocculation tank and a settling tank and liftingclean water to a biochemical tank; 2) performing continuous aeration to the biochemical tank and performing a reaction for 1-2 h; 3) enabling the reacted water to flow into a sloping plate settling tank, after settlement, enabling the clear water to flow into an impounding reservoir for later use. In the method, the wastewater is treated only through flocculation, settlement, biochemical treatmentand sloping plate settlement, so that the method has simple process and is free of construction of a large number of bottom tanks, thus greatly saving land resources. Through aeration, turbulent flowis generated in the biochemical tank so that packs are fully contacted with water, thereby increasing wastewater treatment efficiency.

Description

technical field [0001] The invention belongs to the technical field of domestic sewage treatment, and in particular relates to a method for recycling and treating domestic sewage. Background technique [0002] The traditional domestic sewage treatment method is usually grid-coagulation-sedimentation-aerobic-anaerobic-anoxic-aerobic-secondary sedimentation-reservoir. In this way, the process is complicated, not only takes up a lot of land, but also requires high input costs for wastewater treatment; and the indicators of COD and suspended solids in the purified sewage are still difficult to meet the discharge standards. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides a domestic sewage recovery and treatment method with small footprint and good water treatment effect. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: a domestic sewage recove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/5236C02F3/105C02F7/00C02F9/00C02F2001/007C02F2301/024C02F2303/14
Inventor 陈立波
Owner 北京尊柯科技有限公司
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