Quick condensate agent for organic matters in rice dipping and washing waste water in sugar industry and treatment process
A treatment process and coagulant technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems that affect the safe use, inability to store, and toxicity of recycled feed And other issues
Inactive Publication Date: 2013-09-11
WUHAN COMEON ENVIRONMENT ENG
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AI Technical Summary
Problems solved by technology
[0004] The characteristics of the wastewater are: 1) The water temperature is 40°C, and the rich organic matter causes the wastewater to deteriorate and rot within a few hours, making it impossible to store
2) The combination of traditional water treatment flocculants (polyaluminum + polyacrylamide series) cannot achieve the purpose of rapid sedimentation and separation of organic matter
3) The aluminum ions and acrylamide monomer components in the above treatment agents have certain toxicity to living organisms, which will affect the safe use of recycled feed
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0014] Add 200g of polysilicate ferric polysilicate to the reaction tank containing 1000kg of rice soaking wastewater, adjust the pH of the water to 8, stir and dissolve until a large number of fine flocs appear in the water. Then add 3 g of cationic modified starch and 300 g of potassium sorbate ethanol solution prepared in a mass ratio of 1:1 to it, and stir slowly until completely dissolved. When a large number of condensed flocs appear in the water, introduce the water into the next sedimentation tank and let it settle for 10-15 minutes. Finally, the supernatant water in the sedimentation tank is introduced into a sand filter tank with an average particle size range of 1-3 mm to filter out residual flocs.
[0015] The clear water after filtering is returned to the elutriation / soaking process of broken rice as circulating water.
[0016] The sediment in the sedimentation tank is dried immediately after centrifugal dehydration to obtain animal feed.
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Abstract
The invention provides a quick condensate agent for organic matters in rice dipping and washing waste water in the sugar industry and a treatment process. The condensate agent comprises a coagulation accelerator, a flocculant, a preservative and other matters, and is applicable to separating organic matters in the rice dipping and washing waste water in the broken rice sugar industry. The treatment process comprises a condensation reaction, settling separation and sand filter. The recycled organic matters are in accordance with the sanitation standard of feeds in China, and the treated clean water can be recycled in rice dipping and washing process.
Description
technical field [0001] The invention relates to a rapid coagulation agent and a treatment process for organic matter in rice leaching waste water in the broken rice sugar making industry, and belongs to the technical field of waste water treatment and chemical combination. Background technique [0002] In the process of making maltose syrup, broken rice or aged rice will produce waste water containing about 1-3% organic matter and CODcr≈10000-30000 mg / L after elutriation and hot alkali soaking process. [0003] The organic matter in wastewater is mainly carbohydrates such as protein and polysaccharides. As the basic components of feed, if they can be separated from water, enterprises can not only benefit from resource recovery, but also effectively reduce the biochemical treatment load and cost of subsequent sewage treatment plants. [0004] The characteristics of the wastewater are: 1) The water temperature is 40°C, and the rich organic matter causes the wastewater to dete...
Claims
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IPC IPC(8): C02F1/52C02F9/04
Inventor 罗逸文志敏阴艳华郭杰
Owner WUHAN COMEON ENVIRONMENT ENG