Treatment method of potato type non-grain starch fuel ethanol distiller solution
A technology of fuel ethanol and a treatment method, which is applied in the fields of sewage treatment and comprehensive utilization of resources, can solve the problems of high treatment cost, difficult to develop large-scale industrialization, and is not suitable for large-scale treatment systems, and achieves the effect of high-efficiency phosphorus and nitrogen removal.
A technology of fuel ethanol and a treatment method, which is applied in the fields of sewage treatment and comprehensive utilization of resources, can solve the problems of high treatment cost, difficult to develop large-scale industrialization, and is not suitable for large-scale treatment systems, and achieves the effect of high-efficiency phosphorus and nitrogen removal.
CN102107989AInactive Publication Date: 2011-06-29ZHONGJU TIANGUAN BIOLOGICAL ENERGY
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[0019] The method for processing potato non-grain starchy fuel ethanol residue as shown in Figure 1 is characterized in that it is realized by the following process steps:
[0020] 1. Pre-treatment of waste liquid: the waste liquid passes through the grit chamber to remove heavy impurities, and then filters the residue through a mesh plate with a pore size of 0.5-1.5 mm, and then enters the regulating tank to adjust the water quality, water quantity, and water temperature through a non-clogging cooling device to control Uniform water quality: COD Cr =40000~80000mg / l, water volume: buffer time 2~3h, water temperature: 55~60℃;
[0021] 2. Primary anaerobic treatment: the effluent from the regulating tank enters the high-temperature anaerobic tank for fermentation, the influent COD concentration is 40,000-80,000mg / l, the temperature is controlled at 55-60°C, the removal rate is above 85%, and the generated biogas is collected and utilized;
[0022] 3. Intermediate treatment: the...
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The invention relates to a treatment method of potato type non-grain starch fuel ethanol distiller solution. The method comprises the following steps: waste distiller solution is pretreated simply and adjusted by an adjusting tank and then enters an anaerobic treatment system, wherein the first-stage anaerobic treatment adopts well mixed high temperature anaerobic fermentation and the second-stage anaerobic treatment adopts a medium temperature UASB anaerobic reactor; different microorganisms are utilized to degrade the organic pollutants in the wastewater and generate biogas; a cooling device, a setting tank and an air flotation device are arranged between the two anaerobic reactors to ensure the concentration of the well mixed high temperature anaerobic sludge; the two-stage anaerobic effluent enter two serial sections of oxidation ditches to further remove the organic matter; different denitrification technologies are selected according to ammonia nitrogen indexes to obtain stable denitrification effect; and finally flocculation precipitation and physicochemical treatment are performed, and the obtained water meets the standards and is discharged. The method of the invention has low cost, stable technology and high biogas extraction efficiency of wastewater; and the obtained sludge is used as organic fertilizer and the effluent meet the grade A standard of the integrated wastewater discharge standard (GB8978-1996) for the alcohol industry.
Description
technical field [0001] The invention belongs to the technical field of sewage treatment and resource comprehensive utilization, and in particular relates to a treatment method for a large amount of high-concentration and high-solid-content organic waste liquid produced in the production process of potato non-grain starchy fuel ethanol, so as to ensure the production process of fuel ethanol. The waste water is discharged up to the standard, and resource utilization is used to obtain green energy biogas. Background technique [0002] Fuel ethanol has the characteristics of cleanness and regeneration, which can reduce the emission of carbon monoxide and hydrocarbons in automobile exhaust. It is an important part of renewable energy. important role in increasing income. At present, the national strategic plan for the development of fuel ethanol requires "not to compete with others for food, not to compete with food for land", actively and scientifically develop non-grain fuel e...
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Patent Timeline
29 Jun 2011
Publication
CN102107989A
- IPC
- C02F9/14; C05F7/00; C02F11/12; C02F3/28
- CPC
- Y02E50/30; Y02W30/40; Y02A40/20
- Inventors
- 张晓阳; 樊国军