Treatment method and device of rice lees wastewater

A treatment method and technology of rice distiller's grains, which can be used in food industry wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., which can solve the problems of large amount of sludge, large area and high operating cost. , to achieve the effect of reducing operating costs, equipment costs, and energy consumption

Inactive Publication Date: 2007-09-19
MEIZHOU WUZHISHI TECH
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Problems solved by technology

However, the anaerobic-aerobic method occupies a large area, a large amount of sludge, and high operating costs have plagued many wineries. This is the fundamental reason why many wineries have not yet treated their distiller's grain wastewater

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  • Treatment method and device of rice lees wastewater

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Embodiment Construction

[0014] Referring to shown in Fig. 1, the treatment device of rice distiller's grain wastewater of the present invention comprises anaerobic treatment pond 1, aerobic treatment pond 2, and this anaerobic treatment pond 1 is made up of first-stage anaerobic pond 1a, second-stage anaerobic Pool 1b, the third-stage anaerobic pond 1c and the fourth-stage anaerobic pond 1d are connected in series, and a liquid inlet 3 is provided on the top of the first-stage anaerobic pond 1a, and the bottom of the first-stage anaerobic pond 1a is connected to the second-stage anaerobic pond 1a. The upper part of the secondary anaerobic tank 1b communicates, the lower part of the second-level anaerobic tank 1b communicates with the upper part of the third-level anaerobic tank 1c, the lower part of the third-level anaerobic tank 1c communicates with the upper part of the fourth-level anaerobic tank 1d Connected, the top of the fourth-stage anaerobic tank 1d is provided with a first liquid outlet 4, s...

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Abstract

The invention discloses a disposal method and a disposal apparatus of a rice wine lees waste water in order to provide a disposal technique of rice wine lees waste water with a small floor space, less sludge mass, low fixture costs, low energy consumption, low operation fees. The key points of the technical proposal is that: improving the conventional technics of disposing the lees waste water by anaerobic and aerobic method aiming at the characteristic that the waste water generated by the rice wine lees is relatively less, and the organic matter content is high; firstly four-stage anaerobic treatment and then SBR disposal technics and a disposal method of combining with biomembrane to reduce the waste water disposal floor space to about 50%, and the sludge mass to about 70%. The average value of CODcr of disposed waste water is 180.9mg/L; average value of BOD is 63mg/L; average value of SS is 130mg/L; pH valve is 7-8. Thus, the waste water meets the secondary discharge requirement of national GB 8978-1996 alcohol industry.

Description

technical field [0001] The invention relates to a wastewater treatment technology, in particular to a treatment method for rice distiller's grains wastewater, and also relates to a treatment device for realizing the above method. Background technique [0002] At present, the traditional anaerobic-aerobic method is commonly used at home and abroad to treat distiller's grain wastewater. In the anaerobic-aerobic treatment process, the anaerobic treatment of distiller's grain wastewater has more significant environmental benefits (the COD removal rate of chemical oxygen demand reaches more than 85%), and more significant economic benefits (the treatment of distiller's grain wastewater can recover biogas , the remaining sludge after treatment is a good organic fertilizer). After anaerobic treatment, the COD value of wastewater is still high, around 1000-2000mg / L. After aerobic treatment, the COD value can be reduced to about 200mg / L, which can meet the national second-level stan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30C02F103/32
Inventor 陈梓云彭梦侠
Owner MEIZHOU WUZHISHI TECH
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