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Method for preparing matrix for household sewage biological treatment technology by using rice husk activated carbon

A technology for sewage biological treatment and activated carbon preparation, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of decontamination ability decline, difficult treatment, easy saturation, etc., to achieve Realize the effects of recycling, strong adsorption capacity, and large specific surface area

Inactive Publication Date: 2013-05-15
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

[0002] Existing substrates used in rural decentralized domestic sewage biological treatment technologies include gravel, fly ash, steel slag, ceramsite, etc. These substrates generally have limited adsorption capacity for pollutants and are easy to be saturated. After adsorption saturation, the decontamination ability drops significantly. Difficult to handle and other problems, limiting its large-scale application

Method used

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  • Method for preparing matrix for household sewage biological treatment technology by using rice husk activated carbon
  • Method for preparing matrix for household sewage biological treatment technology by using rice husk activated carbon
  • Method for preparing matrix for household sewage biological treatment technology by using rice husk activated carbon

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preparation example Construction

[0021] 1. Preparation of rice husk activated carbon:

[0022] The rice husks selected for the experiment were collected from the Chaohu area of ​​Anhui Province. The rice husks were washed with tap water to remove dust, rinsed repeatedly with deionized water, and dried for later use. The preparation process of rice husk activated carbon includes 5 steps of carbonization, activation, pickling, water washing and drying:

[0023] (1) Carbonization: After mixing rice husks and zinc chloride solution (55% by mass fraction) at a material-to-liquid ratio of 1:1, put them in a constant temperature dryer at 105°C for drying and preliminary carbonization.

[0024] (2) Activation: Place the dry carbonized rice husk in a tubular resistance furnace, raise the temperature from room temperature to 500 °C at a rate of 10 °C / min according to the set program, keep it for 60 min, and then cool it down to room temperature naturally, during which time the temperature is increased by 200 mL / min. M...

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Abstract

The invention relates to a preparation method of matrix for household sewage biological treatment technology, and in particular to a method for preparing a matrix for household sewage biological treatment technology by using rice husk activated carbon. The matrix is prepared by evenly mixing soil and rice husk activated carbon according to different mass ratio. The rice husk activated carbon adopted in the invention is prepared from an agricultural waste rice husk through activation by an activator, contains mesoporous and microporous structures, and has large specific surface area and strong adsorption capacity; the matrix prepared by uniformly mixing rice husk activated carbon and soil according to a certain proportion can be used to adsorb nitrogen and phosphorus in rural decentralized household sewage, not only can purify water but also can be applied to farmland as a fertilizer containing nitrogen and phosphorus rich, so as to realize the recycling of resources.

Description

Technical field: [0001] The invention relates to a method for preparing a domestic sewage biological treatment technology substrate by using rice husk activated carbon. Background technique: [0002] Existing substrates used in rural decentralized domestic sewage biological treatment technologies include gravel, fly ash, steel slag, ceramsite, etc. These substrates generally have limited adsorption capacity for pollutants and are easy to be saturated. Intractable problems limit its large-scale application. Invention content: [0003] The technical problem to be solved by the present invention is to provide an easy-to-obtain, low-cost, high-efficiency, resource-recycling substrate for rural decentralized domestic sewage biological treatment technology, so as to overcome the deficiencies of the prior art. [0004] Technical scheme of the present invention: it is made by following prescription and method: [0005] Formula, comprises the raw material of following weight perc...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C01B31/08C02F3/00C01B32/324C01B32/348
Inventor 单保庆唐文忠李楠
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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