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Spice wastewater treatment system

A wastewater treatment system and fragrance technology, applied in water/sewage treatment, heating water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of difficulty in biochemical treatment, high operating costs, substandard effluent, etc. The effect of high waste treatment cost, saving operating cost and better effluent quality

Pending Publication Date: 2019-04-05
安徽三江水务工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Process production wastewater in the production process of maltol and ethyl maltol spices, its main components are tetrahydrofuran, furfural, toluene, ethyl maltol, etc., and some heterocyclic organic substances have a high concentration, COD is as high as 140000mg / L, water quality The composition is complex, the biodegradability is extremely poor, and the B / C is 0.15-0.20. It is difficult to improve its biodegradability by general advanced oxidation technology. If the pretreatment cannot achieve the effect, it will bring greater difficulty to the subsequent biochemical treatment, and even water Will not meet the standard
The conventional treatment method mostly adopts Fenton advanced oxidation combined with evaporation and biochemical treatment process, which mainly has the following disadvantages: 1. The biodegradability of sewage is not high, and the biodegradability is increased to about 0.25-0.30; 2. Dosing There are many types and high operation intensity; 3. The operating cost of treatment is high; 4. The amount of hazardous waste sludge produced is large and the treatment cost is high; 5. The quality of the system effluent water is difficult to meet the standard, and the general COD is around 500-1000mg / L

Method used

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  • Spice wastewater treatment system
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Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, a spice wastewater treatment system includes a first pretreatment subsystem 1 for adjusting water quality and quantity and removing hardness in wastewater, and the spice wastewater treatment system also includes , removing salt, hydrolyzing insoluble organic matter into soluble organic matter, and converting difficult-to-biodegradable macromolecular substances into easily biodegradable small-molecular substances. Chemical oxygen demand, multi-stage anaerobic subsystem 3 for reducing organic matter content, said spice wastewater treatment system also includes anoxic / aerobic pool 4 and MBBR pool 5, said first pretreatment subsystem 1 is provided with spices Wastewater inlet, the MBBR pool 5 is provided with a discharge port, the first pretreatment subsystem 1, the second pretreatment subsystem 2, the multi-stage anaerobic subsystem 3, the anoxic / aerobic pool 4 and the MBBR pool 5 are connected through pipelines in turn.

Embodiment 2

[0034] On the basis of Example 1, such as figure 1 , 2 As shown, the first pretreatment subsystem 1 includes a regulating tank 11 for adjusting water quality and quantity, and a hard removal device 12 connected with the regulating pond 11 for removing hardness in wastewater, and the regulating pond 11 is provided with spices Wastewater inlet, the hard removal device 12 is connected with the second pretreatment subsystem 2 through pipelines.

Embodiment 3

[0036] On the basis of embodiment 1 or 2, such as figure 1 , shown in 2, the second preprocessing subsystem 2 includes,

[0037] Catalytic oxidation device 21: used to reduce chemical oxygen demand and improve biodegradability;

[0038] Multi-effect evaporation device 22: used to remove salt;

[0039] Hydrolysis and acidification pool 23: used to hydrolyze insoluble organic matter into soluble organic matter, and convert difficult-to-biodegradable macromolecular substances into easily biodegradable small-molecular substances;

[0040] The catalytic oxidation device 21, the multi-effect evaporator 22 and the hydrolytic acidification tank 23 are sequentially connected through pipelines, and the catalytic oxidation device 21 is connected with the first pretreatment subsystem 1 or the hard removal device 12 through pipelines, so that The hydrolytic acidification tank 23 is connected with the multi-stage anaerobic subsystem 3 through pipelines.

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Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to a spice wastewater treatment system. The spice wastewater treatment system comprises a first pretreatment subsystem, a second pretreatment subsystem, a multi-stage anaerobic subsystem, an anoxic / aerobic tank and an MBBR (moving bed biofilm reactor) tank. The first pretreatment subsystem is used for regulating the water quality and volume and removing the hardness in wastewater; the second pretreatment subsystem is used for reducing the chemical oxygen demand, improving biodegradability, removing salt, hydrolyzing insoluble organic matter into soluble organic matter, and converting macromolecular substances difficult to biodegrade into micromolecular substances liable to biodegrade; the multi-stage anaerobic subsystem is used for reducing the chemical oxygen demand and the organic matter content. The spice wastewater treatment system has the advantages that the treatment depth is increased,the amount of dangerous waste is significantly reduced, the evaporation amount is decreased, and the operation cost is saved by 20-30 yuan per ton of water.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a spice wastewater treatment system. Background technique [0002] As a food additive, spices have greatly promoted the development of the food industry, known as the soul of the modern food industry, and brought many benefits to the food industry. [0003] Process production wastewater in the production process of maltol and ethyl maltol spices, its main components are tetrahydrofuran, furfural, toluene, ethyl maltol, etc., and some heterocyclic organic substances have a high concentration, COD is as high as 140,000mg / L, and the water quality The composition is complex, the biodegradability is extremely poor, and the B / C is 0.15-0.20. It is difficult to improve its biodegradability by general advanced oxidation technology. If the pretreatment cannot achieve the effect, it will bring greater difficulty to the subsequent biochemical treatment, and even the...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F11/122C02F101/38C02F101/16
CPCC02F9/00C02F11/122C02F1/04C02F1/725C02F2101/16C02F3/30C02F2101/38
Inventor 周俊韩厚强董强曹煜许丹吴艳芳陈志远时光贺曹雯
Owner 安徽三江水务工程有限公司
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