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Method for deep purifying domestic waste water of residential area into reclaimed water

A domestic wastewater and deep purification technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of insufficient sewage treatment, high cost of wastewater treatment, long treatment cycle, etc. problems, to achieve the effect of low operation and maintenance costs, short processing time, and convenient maintenance and management

Inactive Publication Date: 2011-06-15
冯小娅
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned existing methods, and provide a method for deep purification treatment of domestic wastewater in residential quarters into reclaimed water, which solves the problem that the existing method occupies a large area, has high investment, long treatment cycle, and waste water treatment. The cost is high and the sewage treatment is not in place

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  • Method for deep purifying domestic waste water of residential area into reclaimed water

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Embodiment Construction

[0024] Specific implementation methods such as figure 1 As shown, firstly, the suspended solids and floating solids of large particles in the wastewater are removed by means of the grid tank. The size of the grid cells is 15×15 mm to 35×35 mm. After the initial precipitation, it is introduced into the grease trap to separate the oil. The grease trap utilizes the characteristic that oil is lighter than water. By standing the water, the oil floats on the upper surface of the sewage water. There is an oil collection port near the liquid level of the grease trap to collect the dirty oil in the sewage. Make the dirty oil flow into the oil storage tank, and pre-treat the animal and vegetable oil. The sewage separated from the oil in the grease trap is introduced into the adjustment tank for sedimentation. The residence time is 1 to 2 hours, which plays a role in homogenizing and equalizing the wastewater to ensure the normal operation of the subsequent biochemical treatment. Table ...

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Abstract

The invention provides a method for deep purifying domestic waste water of a residential area into reclaimed water. The method comprises the following steps: carrying out primary precipitation on sewage in a grating pool, then introducing the sewage into an oil separator, and separating oil stain out; introducing the sewage without the oil stain into a regulating reservoir; introducing supernatant water which is obtained after precipitation in the regulating reservoir into a biochemical pool with biological filling materials, and carrying out decomposition, oxidization and degradation; inflating air to the biochemical pool, and automatically flowing the reacted water to a sludge filtering tank; introducing the water filtered in the sludge filtering tank into a pressure filterer, and carrying out pressurization and filtration; continuously adding a flocculant in a water stream path; and causing the water filtered in the pressure filter to flow into an impounding reservoir for later use, and continuously adding a bactericide into the water stream path. By utilizing the method, the oil stain layer on the upper part of the oil separator is introduced into an oil storage tank, so that the deep purification treatment and recycle utilization of the domestic waste water are achieved on the premise of simple process, less investment, less land occupation and low operation and maintenance cost.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a method for deeply purifying and treating domestic waste water in residential quarters into reused reclaimed water. Background technique [0002] At present, the current domestic wastewater treatment method in residential quarters is generally confluent with industrial wastewater into the urban sewage treatment system, and then discharged after centralized treatment. In order to alleviate the tense situation of urban water use, some cities have established special enterprises of different scales to treat sewage into reclaimed water. The reclaimed water prepared can be used as industrial water, domestic (non-drinking) water or green water. To a large extent, the contradiction of the shortage of fresh water resources has been alleviated. However, due to the mixing of domestic wastewater and industrial wastewater, its composition is very complex, and the treatment of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 冯小娅
Owner 冯小娅
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