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Method for produce liquid organic fertilizer with starch wastewater to improve saline and alkaline land

A starch wastewater and organic fertilizer technology, applied in the field of chemical fertilizers, can solve the problems of high product cost, ineffective utilization and treatment of biogas slurry, complex process, etc., and achieve the effect of cost saving

Inactive Publication Date: 2017-01-11
SHANDONG SUNWAY LANDSCAPE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many studies on resource utilization of starch wastewater, such as the use of starch wastewater to produce biogas. Since the biogas slurry cannot be effectively used and treated, this mature treatment method has gradually been abandoned.
There is also the use of starch wastewater to produce microbial flocculants, single-cell proteins, pullulan polysaccharides, microbial pesticides, etc., which cannot be implemented due to complex processes and high product costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for utilizing starch waste water to produce liquid organic fertilizers for improving saline-alkali land, the steps are as follows:

[0015] 1), the starch wastewater is filtered with a 100-purpose filter screen;

[0016] 2), waste water is passed in the anaerobic biofilter and processed; Its specific surface area is provided with in the anaerobic biofilter and is 500m 2 / m 3 , a honeycomb polymer resin filler with a porosity of 95-98%; the residence time of wastewater in the anaerobic biological filter is 6 hours;

[0017] 3), the effluent of the anaerobic biological filter enters the solar biological aerated filter for processing; the gas-water ratio in the solar biological aerated filter is 3: 1; the waste water stays in the solar biological aerated filter The time is 4h;

[0018] 4), adding starch phosphate and polyphosphorus ferric chloride to the effluent of the solar aerated biological filter to process; preferably, the mass ratio of starch phosphate a...

Embodiment 2

[0021] A method for utilizing starch waste water to produce liquid organic fertilizers for improving saline-alkali land, the steps are as follows:

[0022] 1), starch waste water is filtered with 200 mesh filter screens;

[0023] 2), the waste water is passed into the anaerobic biofilter for processing; the anaerobic biofilter is provided with a specific surface area of ​​600m 2 / m 3 , a honeycomb polymer resin filler with a porosity of 98%; the residence time of wastewater in the anaerobic biological filter is 2h;

[0024] 3), the effluent of the anaerobic biological filter enters the solar biological aerated filter for processing; the gas-water ratio in the solar biological aerated filter is 10: 1; the waste water stays in the solar biological aerated filter The time is 10h;

[0025] 4), adding starch phosphate and polyphosphorus ferric chloride to the effluent of the solar aerated biological filter to process; preferably, the mass ratio of starch phosphate and polyphosph...

Embodiment 3

[0028] A method for utilizing starch waste water to produce liquid organic fertilizers for improving saline-alkali land, the steps are as follows:

[0029] 1), starch waste water is filtered with 150 mesh filter screens;

[0030] 2), waste water is passed into the anaerobic biofilter for processing; said anaerobic biofilter is provided with a specific surface area of ​​550m 2 / m 3 , a honeycomb polymer resin filler with a porosity of 96%; the residence time of wastewater in the anaerobic biological filter is 4h;

[0031] 3), the effluent of the anaerobic biological filter enters the solar biological aerated filter for processing; the gas-water ratio in the solar biological aerated filter is 6: 1; the waste water stays in the solar biological aerated filter The time is 8h;

[0032] 4), adding starch phosphate and polyphosphorus ferric chloride to the effluent of the solar aerated biological filter to process; preferably, the mass ratio of starch phosphate and polyphosphorus ...

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Abstract

The invention discloses a method for produce liquid organic fertilizer with starch wastewater to improve saline and alkaline land. Through the strainer filtration, anaerobic biological filter fermentation, solar aeration biological filter fermentation, starch phosphate and PPFC hydrolysis, microbial fermentation agent fermentation and other deep treatments, the starch wastewater can become liquid microbial fertilizer containing rich beneficial microbial flora and many kinds of secondary metabolites. After the application of such fertilizer, the reduction of microbial population in improved secondary saline-alkali land can be alleviated, which may increase the productivity by 20%-30%; therefore, cost can be saved and soil depletion, hardening and salinization can be alleviated with the trend of energy saving, environmental protection and sustainable development is satisfied.

Description

technical field [0001] The invention relates to the technical field of chemical fertilizers, in particular to a method for producing liquid organic fertilizers for improving saline-alkali land by using starch wastewater. Background technique [0002] Wheat starch and corn starch are widely used in industrial production and daily life, but a large amount of wastewater will be generated in the production process. The wastewater contains a certain amount of organic components such as starch, pentosan, and protein. Direct discharge will cause serious environmental pollution. At present, the treatment methods of starch wastewater all adopt the treatment method of domestic sewage, that is, the activated sludge method, and the COD can be discharged after reaching the standard. There are many researches on the resource utilization of starch wastewater, such as using starch wastewater to produce biogas. Since the biogas slurry cannot be effectively used and treated, this mature trea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
CPCC05B15/00C05G3/80C05G5/20C05B17/00C05D5/00C05D9/00C05F5/002C05F7/00C05F11/00C05F11/08
Inventor 王胜
Owner SHANDONG SUNWAY LANDSCAPE TECH