A kind of flocculation purification agent for pretreatment of rural nutrient-rich wastewater and its preparation method
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A purifying agent, eutrophic technology, applied in the field of flocculation purifying agent and its preparation, can solve the problems of untargeted pollution and degradation of eutrophic pollutants, difficult to remove at the same time, low absorption efficiency, etc., so as to improve the biodegradable performance, The effect of low cost and reducing dependence on oil resources
Active Publication Date: 2016-04-20
JIANGSU SHANGDA WATER AFFAIR
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[0007] In order to overcome the problems of low absorption efficiency, high production cost, untargeted pollution and degradation of eutrophic pollutants, and difficulty in removing nitrogen and phosphorus at the same time in existing flocculants for nitrogen and phosphorus removal, and at the same time make resourceful use of existing waste resources , to prepare high value-added, environmentally friendly nutrient-rich pollutant flocculant, the invention provides a flocculation purifier, especially a flocculation purifier with modified chitosan as a carrier, which can be used for pretreatment of rural eutrophication waste water
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Embodiment 1
[0031] Take commercially available chitosan, nano-aluminum powder, and tea polyphenols, stir and mix evenly according to the mass ratio of 5:1:0.5, put them into a far-infrared oven, and use far-infrared heating technology to make the temperature of the mixture quickly reach 80 ℃, and fully stirred and turned, during this period, use a spray probe placed in a far-infrared oven to atomize and spray 0.25% 0.1mol / L sodium hydroxide solution according to the mass ratio, so that the mixture is fully absorbed and evenly stirred for about 5 minutes , after standing still for 15 minutes, quickly cool and take out to obtain the modified chitosan mixture, and put it into a light-proof sealed bottle for subsequent use.
Embodiment 2
[0033] Get implementation example 1 modified chitosan mixture, carry out following weight ratio, obtain nutrient-polluted wastewater flocculation purification agent 1
[0034] Modified Chitosan Blend: 13%
[0035] Nano aluminum powder: 0.1%
[0036] Tea polyphenols: 1.2%
[0037] Magnesium chloride: 0.3%
[0038] The remainder is supplemented with zeolite powder as the base material.
Embodiment 3
[0040] Get implementation example 1 modified chitosan mixture, carry out following product proportioning, obtain nutrient-polluted wastewater flocculation purifier 2
[0041] Modified Chitosan Blend: 17%
[0042] Nano aluminum powder: 0.4%
[0043] Tea polyphenols: 1%
[0044] Magnesium chloride: 0.5%
[0045] The remainder is supplemented with zeolite powder as the base material.
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Abstract
The invention discloses a flocculating purifying agent for pretreating rural eutrophic wastewater and a preparation method of the flocculating purifying agent, belonging to the technical field of sewage treatment. The invention provides the flocculating purifying agent and in particular relates to a flocculating purifying agent by taking modified chitosan as a carrier. The flocculating purifying agent can be used for pretreating rural eutrophic wastewater and simultaneously deeply removing nitrogen and phosphorus. A traditional pure high polymer synthesis mode for preparing a wastewater flocculating agent is broken, comprehensive modified chitosan is introduced into raw materials for preparing the wastewater flocculating agent to serve as a basic molecular skeleton, the original high polymer materials are partially placed, the dependence of the traditional high polymer wastewater flocculating agent on petroleum resources can be reduced, the biodegradable performance of the traditional flocculating agent is improved, the production cost of the wastewater flocculating agent is reduced, and the flocculating purifying agent has significant environmental, social and economic benefits.
Description
technical field [0001] The invention relates to a flocculation purifying agent for pretreating nutrient-rich wastewater in rural areas and a preparation method thereof, belonging to the technical field of sewage treatment. Background technique [0002] Due to the complexity of the lake eutrophication problem, there are still many mechanisms that have not been understood by people. At present, the international research on eutrophication of shallow lakes with flooding characteristics still lacks mature theories. But in general, the eutrophication of lake water is mainly caused by the increase of nutrients such as nitrogen and phosphorus in the water. Therefore, the control of eutrophication is mainly targeted research on the removal of nitrogen and phosphorus. [0003] The electrocoagulation method was used to remove ammonia nitrogen and phosphorus in wastewater, and the electrode plate was made of aluminum or stainless steel. The thermodynamics and kinetics process of elec...
Claims
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