Technique of enzyme method for treating organic wastewater and matched equipment

An organic wastewater and enzymatic treatment technology, applied in the fields of biochemical engineering and environmental science, can solve the problems of failure to reduce investment in environmental protection equipment and facilities, unreported processes and devices, waste of land resources and energy, etc. Strong pollution ability, good immobilization effect, and the effect of improving utilization efficiency

Inactive Publication Date: 2005-10-26
江苏晨翔环境科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have many defects of their own. To varying degrees, they are manifested in low treatment efficiency, waste of land resources and energy, high treatment cost, unsatisfactory effect, easy to produce new waste by-products, and even new sources of pollution.
Faced with the increasingly serious global water pollution problem, in recent years, in the field of environmental protection, enzymes and enzyme technologies have been used for the purpose of practical application, using the catalytic properties of enzymes to degrade and transform pollutants. A lot of research has been done in China work, but there are basically no reports on the technology and equipment for wastewater treatment using enzymes and enzyme reactors for environmental protection
At present, the application of enzyme preparations is directly added to polluted water bodies for treatment. The disadvantage is that on the one hand, the investment in environmental protection equipment and facilities cannot be reduced, and on the other hand, the large loss of enzymes in the process of treatment increases the cost of pollution control. cost
Therefore, although enzyme preparations have a good effect in wastewater treatment in the field of environmental protection, the high cost is the main reason why it is difficult to promote.

Method used

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  • Technique of enzyme method for treating organic wastewater and matched equipment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] This embodiment is realized in this way: the waste water enters the storage tank 2 from the water inlet 1, flows through the grid 3 to remove larger suspended solids, and then enters the adjustment tank 4. The device 6 adjusts the pH and maintains it at 4.5-5.5; the wastewater after the pH adjustment is pumped into a preprocessor 8 by the raw water pump 7 for adsorption and interception of the filter medium; the pretreated wastewater is passed through the temperature control device 9 to maintain the wastewater at After 25-50°C, it enters the first-stage immobilized enzyme reactor 10 from the bottom by way of ascending flow, and then flows through the second-stage immobilized enzyme reactor 11 and the third-stage immobilized enzyme reactor 12. The residence time of the wastewater is 1 ~ 3 hours; the effluent degraded by the enzyme-catalyzed reaction enters the transition pool 13, and is sent to the filter device 15 by the booster pump 14; the concentrated water intercepte...

Embodiment 2

[0024] According to the process and device of Embodiment 1, 2 tons / hour of industrial organic wastewater is treated, wherein the capacity of the regulating tank is set at 6 to 15 tons; the pretreatment adopts a precision filter, which is 2 cubic meters / hour, and its shell is made of stainless steel material.

[0025] The waste water enters the enzyme reactor after the online PH value and temperature adjustment of the front-end regulating tank and the filtering of impurities and some large suspended solids, and the water is fed from the bottom using an upflow type. The hydraulic retention time of the reactor is 1.5 hours, and the water is discharged Finally, it enters the filtrate pool, and then the pressurized pump connected to the pool sends water into the ultrafiltration machine. The membrane pore size of the ultrafiltration machine is 50,000 to 80,000 molecular weight. 70% of the passed water is discharged straight to the standard, and 30% of the concentrated water is retur...

Embodiment 3

[0027]Take the industrial wastewater of a printing and dyeing factory that processes 2,000 tons per day as an example. The volume of the sedimentation tank is 300-500 cubic meters, and a pipeline jet mixer is installed on the waste water outlet pipe to directly pump the prepared medicine into the pipeline at high pressure to adjust the pH value. After the grid and PH adjustment, the adjustment tank section can add flocculants, decolorizers, etc. for pretreatment, and the water is sent to the filter device with a processing capacity of 100T / h. The device can be used in two ways, using the inner brush drum filter , the filter area is 8 square meters, the diameter is 800CM, the length is 3 meters, the water flow speed is 10 m / s (filter device with a filtration speed of 8-15 m / s), and then the water temperature is adjusted to 30-50°C (it is not necessary to install this device in southern regions and in summer), and the outlet temperature of printing and dyeing wastewater is gener...

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Abstract

The present invention relates to a process for treating organic waste water by utilizing enzyme method. Said process is implemented by making organic waste water successively by passed through the water storage tank or precipitation tank, pH regulating tank, pretreatment device, temperature control device, enzyme reactor and filtration device. It is characterized by that the waste water is fed into the immobilized enzyme reactor from its bottom portion, and undergone the process of one-stage or multistage treatment to implement enzyme catalytic degradation so as to make discharged water meet discharge standard.

Description

technical field [0001] The invention relates to a process for treating organic waste water using enzymes and enzyme technology and a combined device thereof, belonging to the technical fields of biochemical engineering and environmental science. technical background [0002] The application of enzyme and enzyme technology in the treatment of organic wastewater provides a new technical means for the treatment of water pollution in environmental protection. There have been a lot of theoretical researches on this aspect at home and abroad, but there is almost a blank in the practical application of engineering in China. At present, there are mainly the following methods in the treatment of water environmental pollution: physical and chemical treatments include coagulation, adsorption, membrane separation, ion exchange, neutralization, etc.; chemical treatment methods include oxidation, photochemical, electrolytic Chemical method, etc.; biological treatment methods include acti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 孙祥章任超敖小平张庆祥
Owner 江苏晨翔环境科技股份有限公司
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