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Modular integrated system and technology for treating non-fermented bean product production wastewater

A technology for producing wastewater and integrated systems, applied in the field of modularized integrated systems and processes, can solve problems such as insufficient system load, system instability, and microbial death, and achieve energy saving and cost savings in operation, advanced process combination technology, and modularization high degree of effect

Active Publication Date: 2018-05-29
植物肉(杭州)健康科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] (1) The current water treatment system is difficult to adapt to the situation of particularly large changes in water volume
Wastewater from the production of non-fermented soy products has obvious seasonal characteristics, that is, there are so-called low and peak seasons, and some factories even stop production during the off-season, so the discharge of non-fermented soy product production wastewater varies greatly in a year ;The treatment system currently used is basically designed according to the average water volume or the maximum water volume. The result of this design is that when the water volume is low, the system load is insufficient, resulting in a large number of microbial deaths; when the water volume is high, the system load is too high, and the effluent water quality is not up to standard
[0007] (2) The current water treatment system is difficult to adapt to the situation of large changes in water quality
Therefore, when designing, the same system is generally used to treat wastewater with great changes in water quality. Significant changes in water quality will generate impact loads on the sewage treatment system, causing the system to become unstable and the effluent indicators to deteriorate.
[0008] (3) Seasonal wastewater has an impact on the anaerobic system, increasing the burden on enterprises
Wastewater from non-fermented soy products is a typical organic wastewater. In general, a combined anaerobic and aerobic treatment system is used in the biochemical stage. However, non-fermented soy products have seasonal characteristics. In the absence of water in winter, the anaerobic system will If it is greatly affected, it may lead to the death of all anaerobic bacteria. In the second year, the anaerobic system will be restarted, which will increase the management burden of the enterprise.
[0009] (4) Low recycling rate of resources
However, in the current treatment process, the main emphasis is on water treatment, and the recycling rate of this part of resources is very low

Method used

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Examples

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Effect test

Embodiment 1

[0073] This embodiment adopts figure 1 The modular integrated process system and method shown in the figure treat wastewater from a non-fermented bean product processing factory in Shenyang. During the treatment process: the design mesh size of the fine mesh screen is 10 mm; The design residence time of the zone reaction zone is 5min, the design flow velocity of the contact chamber in the air flotation zone is 0.05m / s, the design residence time of the contact chamber is 2min, and the surface load of the separation chamber in the air flotation zone is 6m 3 / (m 2 h); oil separation area, design 2-stage oil separation lower baffle, 1st-stage oil separation upper baffle, 1 float oil skimmer, the float oil skimmer is set in front of the oil separation upper baffle; sedimentation area, including sediment 2 buckets, 1 set of slag discharge system; the design residence time of the regulating pool is 12h;

[0074] The design load of the anaerobic fluidized bed reactor is 5kgCOD / (m 3...

Embodiment 2

[0080] This embodiment adopts figure 1 The modular integrated process system and method shown in the figure treat wastewater from a non-fermented bean product processing factory in Shenyang. During the treatment process: the design mesh size of the fine mesh screen is 10 mm; The design residence time of the zone reaction zone is 5min, the design flow velocity of the contact chamber in the air flotation zone is 0.05m / s, the design residence time of the contact chamber is 2min, and the surface load of the separation chamber in the air flotation zone is 7m 3 / (m 2 h); oil separation area, design 2-stage oil separation lower baffle, 1st-stage oil separation upper baffle, 1 float oil skimmer, the float oil skimmer is set in front of the oil separation upper baffle; sedimentation area, including sediment 3 buckets, 1 set of slag discharge system; the design residence time of the regulating pool is 20h;

[0081] The design load of the anaerobic fluidized bed reactor is 6kgCOD / (m 3...

Embodiment 3

[0087] This embodiment adopts figure 1 The modular integrated process system and method shown in the figure treat wastewater from a non-fermented bean product processing factory in Shenyang. During the treatment process: the design mesh size of the fine mesh screen is 10 mm; The design residence time of the zone reaction zone is 5min, the design flow velocity of the contact chamber in the air flotation zone is 0.05m / s, the design residence time of the contact chamber is 2min, and the surface load of the separation chamber in the air flotation zone is 8m 3 / (m 2 h); oil separation area, design 2-stage oil separation lower baffle, 1st-stage oil separation upper baffle, 1 float oil skimmer, the float oil skimmer is set in front of the oil separation upper baffle; sedimentation area, including sediment 4 buckets, 1 set of slag discharge system; the design residence time of the regulating pool is 24h;

[0088] The design load of the anaerobic fluidized bed reactor is 8kgCOD / (m 3...

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Abstract

The invention relates to a modular integrated system and technology for treating non-fermented bean product production wastewater. The modular integrated system comprises a first-stage pretreatment module, a second-stage biochemical module and a three-stage deep treatment module, wherein the first-stage pretreatment module is provided with a fine mesh sieve and an air flotation oil separation sedimentation adjusting pool to remove suspended solids and oil slick and adjust water flow and water quality; the second-stage biochemical module is provided with an anaerobic unit and an aerobic unit toremove main pollutants in wastewater; the three-stage deep treatment module is provided with a micro sand sedimentation tank, an activated sand filter, a dynamic membrane filtration system and an ultraviolet disinfection reactor to remove SS and realize disinfection. Technology integration and parameter design are performed for high-concentration non-fermented bean product production wastewater,and different units are selected to be operated according to the inlet water quality condition. The technology has the characteristics of being flexible, efficient, convenient, intelligent and the like, and economical, effective and stable operation of wastewater treatment facilities can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of integrated treatment of high-concentration organic wastewater, in particular to a modular integrated system and process for treating wastewater produced by non-fermented soybean products. Background technique [0002] In recent years, my country's bean product industry has developed rapidly, and a number of large enterprises in the production and processing of bean products have developed, which has changed the traditional workshop-style production mode. As of 2010, there were more than 2,000 soybean product processing enterprises nationwide, and 117 enterprises with a daily processing capacity of 500 t / d. Among the 12 enterprises with an annual processing capacity of 1.8 million tons worldwide, my country accounted for 6 of them. [0003] Soy products are mainly divided into two categories, one is fermented soy products and the other is non-fermented soy products. Fermented soy products refer to soy pro...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/30C02F103/32
CPCC02F1/001C02F1/24C02F1/32C02F1/40C02F1/444C02F3/02C02F3/28C02F3/2833C02F9/00C02F2101/30C02F2103/32C02F2303/04
Inventor 于鹏飞李希孙金阳
Owner 植物肉(杭州)健康科技有限公司
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