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Resource treatment method for malting sewage

A treatment method and recycling technology, applied in the field of wastewater recycling in the malting industry, can solve the problems of substandard sewage discharge in China, shortage of water resources, etc., to promote development, low comprehensive treatment costs, and solve substandard sewage discharge. Effect

Inactive Publication Date: 2010-06-16
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its purpose is to solve the problem of substandard sewage discharge of malting enterprises and the shortage of water resources in China

Method used

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  • Resource treatment method for malting sewage
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Embodiment Construction

[0026] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] The implementation location is Dalian, Liaoning Province.

[0028] Take 1500 tons of malting sewage, its indicators are: COD cr 2800mg / L, BOD 5 1350mg / L, total polyphenol content 190mg / L, chromaticity (platinum cobalt chromaticity unit) 50, turbidity 40NTU, ss 950mg / L, coliform bacteria 51*10 6 CFU / 100mL, the total number of colonies 43*10 8 CFU / 100mL.

[0029] After removing impurities by the grid machine, adjusting the acidification tank, anaerobic and aerobic aeration, the indicator after the air floats out of the water is: COD cr 170mg / L, BOD 5 58mg / L, total polyphenol content 80mg / L, chroma 40, turbidity 28NTU, ss 60mg / L, N-NH 3 14mg / L, coliform bacteria 36*10 4 CFU / 100mL, the total number of colonies 29*10 5 CFU / 100mL.

[0030] The biochemically treated sewage enters the treated water discharge pool, which has a volume of 80 t...

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Abstract

The invention relates to a resource treatment method of malting sewage, which comprises pretreatment, ozone flocculation, sand filtration, ozone oxidation, activated charcoal adsorption and disinfection. The indices of effluent water meet and even exceed the malting water recycling standards, and parts of the indices (color density, turbidity, microbial content, etc.) exceed drinking water standards, so that the effluent water can be directly reused in production. The inventive method achieves resource treatment and cyclic utilization of malting sewage; and has the advantages of low cost and great economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a waste water resource treatment method in the malting industry. technical background [0002] The malting industry is an industry that consumes a lot of industrial water. According to the current level of technical equipment in my country, the average water consumption per ton of commercial malt production is about 6.5 to 8.5 tons. The annual output of malt in the country is 4 million tons, and it is growing at a rate of 5% every year. Such a large malting enterprise consumes a considerable amount of water resources every year, and also brings a heavy burden to sewage treatment. [0003] Due to the good biodegradability of wastewater, currently all malting enterprises adopt the traditional "physicochemical + biochemical" water treatment process (filtration, sedimentation, acidification mediation, anaerobic, aerobic aeration, air flotation) after treatment, reach the standa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F1/78C02F1/52C02F1/28C02F1/50C02F103/32
Inventor 赵长新石殿瑜邱然王伟钱竹苗君
Owner DALIAN POLYTECHNIC UNIVERSITY
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