A device and method for microbe-coupled electrolysis treatment of organic waste with high solid content
A high solid content, organic waste technology, applied in biological treatment devices, electrochemical biological combined treatment, biological water/sewage treatment, etc. problems, to achieve the effect of saving resources, protecting the environment, and environmental protection labor costs
Active Publication Date: 2020-11-06
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
[0006] The purpose of the present invention is to solve the problems of long time-consuming, low methane production, high operating cost, high ammonia nitrogen, and high-concentration volatile organic acid accumulation in the existing treatment methods for organic waste with high solid content, and to provide a high-efficiency microbial-coupled electrolytic treatment method. Devices with solid organic waste
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[0064] A method for treating organic waste with a high solid content by coupling electrolysis with microorganisms, comprising the following steps:
[0065] S1. Cultivate anaerobic digestion bacteria inoculum
[0066] Mix the sludge and anaerobic culture solution from the anaerobic tank of the sewage treatment plant at a volume ratio of 17:1, activate and cultivate at 25-35°C for 3-5 days to obtain anaerobic digestion bacteria inoculum; the above anaerobic culture solution Composed of components with the following mass concentrations: C 6 h 12 o 6 ·H 2 O 15.4g / L, C 2 h 3 NaO 2 38.5g / L, NH 4 Cl 4.3g / L, K 2 HPO 4 ·3H 2 O 1.6g / L, trace elements 5mL / L, wherein, trace elements are composed of components with the following mass concentrations: EDTA 5g / L, ZnSO 4 ·7H 2 O 2.2g / L, CoCl 2 ·6H 2 O 1.6g / L, MnCl 2 4H 2 O 5.0g / L, FeSO 4 ·7H 2 O 5.0g / L, MgSO 4 ·7H 2 O 5.0g / L or MgCl 2 4.1g / L, (NH 4 ) 6 Mo 7 o 24 4H 2 O 1.1g / L, CaCl 2 2H 2 O 5.5g / L or CaCl 2 4.2g...
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The invention discloses a device and a method for microorganism coupling electrolysis treatment on high solid content organic wastes. An anaerobic reaction tank is adopted as a main body, the main body is internally provided with a graphite felt electrode microorganism electrolytic tank (MEC) to form a high solid content organic waste treatment device, hydrolysis of high solid content organic wastes is stimulated and intensified through micro current, a hydrolysis intermediate is utilized by suspended microorganisms and electrode microorganisms in a gradient manner, and hydrolysate is adoptedfor circulation instead of stirring, so that the problem that organic acids and ammonia nitrogen are accumulated in the digestion process is solved, the conversion velocities of volatile organic acidsand the final methane yield can be increased, efficient degradation of the high solid content organic wastes is achieved, and the device is easy to maintain and excellent in environment-friendly benefit and economic benefit.
Description
technical field [0001] The invention belongs to the technical field of solid waste treatment devices and methods, and specifically relates to a device and method for using anaerobic bacteria as biocatalysts, using the current of a microbial electrolytic cell to stimulate the hydrolysis of organic waste with high solid content, and synchronously generating methane and hydrogen at microbial cathodes. Background technique [0002] Organic waste refers to solid or liquid organic objects and substances that have lost their original use value or have not lost their use value but have been discarded or abandoned during production activities, including agricultural organic waste (mainly including crop straw, vines, animal waste, etc.) poultry manure and aquatic waste, etc.), industrial organic waste (mainly including high-concentration organic wastewater, organic waste residue, etc.), municipal organic waste (mainly including landscaping waste, municipal sludge, animal inclusions in ...
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IPC IPC(8): C02F3/00C02F3/28C02F101/30
CPCC02F3/005C02F3/2866C02F2101/30C02F2203/006
Inventor 徐苏云张雨辰崔铭昊颜宁王重阳张皖秋
Owner UNIV OF SHANGHAI FOR SCI & TECH