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Method for treating cassava alcohol wastewater through anaerobic reactor filled with ceramic material

An anaerobic reactor and cassava alcohol technology, which is applied in anaerobic digestion treatment, chemical instruments and methods, natural water treatment, etc., can solve energy consumption and other problems, and achieve high efficiency, resource utilization value, and high methane production Effect

Inactive Publication Date: 2016-09-28
NANJING UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] Aerobic biological method is generally used to treat low-concentration organic wastewater due to its simple operation and good effluent effect. However, aerobic treatment has the problem of energy consumption, which is the biggest drawback and has attracted more and more attention.

Method used

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  • Method for treating cassava alcohol wastewater through anaerobic reactor filled with ceramic material
  • Method for treating cassava alcohol wastewater through anaerobic reactor filled with ceramic material
  • Method for treating cassava alcohol wastewater through anaerobic reactor filled with ceramic material

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Embodiment 1

[0042] Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail:

[0043] A kind of method that ceramic material fills anaerobic reactor to process cassava alcohol waste water, comprises the steps:

[0044] 1) Fill the ceramic material into the anaerobic reactor, which is designed by ourselves and manufactured by Jiangsu Nanjing Gongda Yuankai Bioenergy Environmental Technology Co., Ltd., with a total volume of 3460 cm 3 , the size of the ceramic material L×D×H is 18×18×18 mm, and the total volume of the porous ceramic carrier accounts for 35% to 40% of the volume of the anaerobic bioreactor;

[0045] 2) Inoculate 865-1142 mL of anaerobic sludge on the ceramic carrier in the reactor, and use artificial wastewater for cultivation during the static cultivation stage of the sludge. The formula is 0.25 g / L of sodium acetate and 0.25 g / L of sodium propionate , sodium butyrate 0.25 g / L, urea 0.5 g / L, glucose 0.25 g / L, d...

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Abstract

The invention discloses a method for treating cassava alcohol wastewater through an anaerobic reactor filled with a ceramic material. The method includes the steps that the anaerobic reactor is filled with the ceramic material serving as a sludge carrier, wherein the volume of the ceramic material is 30%-45% the working volume of the reactor; anaerobic sludge is inoculated to the ceramic carrier, and standing culture is carried out to make the anaerobic sludge adsorbed to the ceramic carrier; the anaerobic sludge is subjected to habituated culture, cassava alcohol wastewater which is diluted step by step is introduced into the reactor for reflux to make the immobilized sludge make full contact with the cassava alcohol wastewater, and habituated culture is ended when the COD removal rate and the methane yield are stable; the cassava alcohol wastewater to be treated enters the anaerobic reactor for treatment, wherein the hydraulic retention time is 0.3-0.5 h. According to the method, the COD removal rate can reach 98% or above after stable operation.

Description

technical field [0001] The invention relates to a method for treating cassava alcohol wastewater, in particular to a method for removing high-concentration organic pollutants in cassava alcohol wastewater and producing biogas by fermentation by using a ceramic material to fill an anaerobic reactor. Background technique [0002] Cassava has the characteristics of large yield, high starch content, drought tolerance, barren tolerance, labor-saving planting, and low investment. The production of alcohol with cassava as raw material has a relatively broad market in my country, and 1 / 3 of my country's alcohol production is based on cassava as raw material. In the conventional production process, about 7-15 tons of wastewater is produced for every 1 ton of cassava alcohol produced, and this type of wastewater contains a large amount of organic compounds and suspended solids, which is an acidic high-concentration organic wastewater. In recent years, the state has paid more and more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F103/32
CPCC02F3/2806C02F2103/325Y02E50/30
Inventor 贾红华周俊韩周陈非儿周华姜岷韦萍
Owner NANJING UNIV OF TECH
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