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Low-temperature anaerobic treatment device of high concentration organic wastewater and treatment technology of device

An anaerobic treatment device, a technology for organic wastewater, applied in anaerobic digestion treatment, water/sludge/sewage treatment, water pollutants, etc., to achieve the effects of good growth and renewal, high efficiency, and fast film formation

Inactive Publication Date: 2018-06-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, these traditional anaerobic reactors are mainly suitable for organic wastewater with high biodegradability, and they all need to maintain an operating temperature in the medium temperature range of 32-37 degrees and a neutral pH value of 6.5-7.5. The complexity of the operation is essential

Method used

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  • Low-temperature anaerobic treatment device of high concentration organic wastewater and treatment technology of device
  • Low-temperature anaerobic treatment device of high concentration organic wastewater and treatment technology of device

Examples

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Effect test

Embodiment １

[0036] Embodiment 1: A low-temperature anaerobic treatment device for high-concentration organic wastewater of the present invention includes a pre-conditioning tank 1, a low-temperature anaerobic reactor 5 and a subsequent treatment system 10 connected in sequence. The gas head 2 and the low temperature anaerobic reactor 5 are arranged perpendicular to the bottom of several water distribution pipes 6 to realize the uniform water distribution of the reactor water, and the low temperature anaerobic reactor 5 is evenly filled with polypropylene biological filler 7, and the low temperature anaerobic reactor A water inlet pump 3 is provided on the inlet pipeline of 5, and a reflux pump 4 is provided on the return pipeline;

[0037] The side wall of the pre-regulation tank 1 is connected with a waste water inlet pipe, the side wall of the pre-regulation tank 1 is provided with a sample inlet, and the bottom of the pre-regulation tank 1 is provided with an exposure Gas head, the sid...

Embodiment ２

[0045] The device described in Example 1 was used to treat wastewater from a pharmaceutical company in Hangzhou. The volume of wastewater was 250 tons per day. A low-temperature anaerobic hydrolysis reactor and its treatment process were used. When the influent concentration was 30,000 to 50,000 mg / L, the wastewater The output is 150 tons / day. Through the low-temperature anaerobic treatment device, the COD removal rate of the effluent is as high as 85%, and the BOD / COD is increased from 0.15 to 0.34.

Embodiment ３

[0047] The device described in Example 1 was used to treat a large amount of printing and dyeing wastewater produced by a textile printing and dyeing enterprise. The amount of wastewater was 210 tons per day. The low-temperature anaerobic hydrolysis reactor and its treatment process were used. The influent concentration was 20000~40000 mg / L. When the chroma is 400~600 times, the anaerobic load is 4kgCOD / (m 3 d) When the temperature is between 4 and 25 degrees Celsius 365 days a year, the COD removal rate of the effluent is 40%, the chromaticity removal rate is above 85%, and the BOD / COD is increased from 0.2 to above 0.4.

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Abstract

The invention relates to a device of treating high concentration organic wastewater with a low-temperature anaerobic reactor and a treatment technology. Applicable industrial wastewater includes the high concentration organic wastewater such as pharmaceutical wastewater, dyeing wastewater or coal chemical industrial wastewater; and applicable influent has a COD (chemical oxygen demand) concentration of less than 50000mg / L, TDS (total dissolved solids) of less than 3000mg / L and temperature of 4-10 DEG C. The high concentration organic wastewater is treated by a technology integrating a prepositive pretreatment regulation tank and the low-temperature anaerobic reactor in order to overcome the actual condition that the traditional anaerobic system is required to operate in a stable moderate temperature scope and is low in efficiency in a low temperature environment; and the purposes of reducing the heating temperature of the wastewater and improving the working efficiency are achieved bybiological filling with a good heat insulation property in the anaerobic reactor and inoculated low-temperature microorganisms. The technology is easy and simple to operate, high in treatment efficiency and high in adaptability, and a design basis is provided for the treatment of the high concentration organic wastewater in the low temperature environment.

Description

technical field [0001] The invention belongs to the field of waste water treatment, in particular to a low-temperature anaerobic treatment device for high-concentration organic waste water and an operation method thereof. Background technique [0002] With the rapid development of the chemical industry and its related industries, high-concentration organic wastewater is increasing. Most of the wastewater discharged from industries such as pharmaceuticals, chemicals, textiles, and food is high-concentration organic wastewater. Conventional physicochemical and biochemical treatments are difficult to make it At the same time, there are problems such as high treatment cost, complicated process, and difficult operation and maintenance. [0003] Anaerobic technology has developed rapidly in recent years because of its simple operation and low cost. Among them, UASB (rising sludge fluidized bed), EGSB (external circulation anaerobic reactor), IC (internal circulation anaerobic rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F101/30
CPCC02F3/28C02F2101/30
Inventor 张亚雷沈峥褚华强喻清
Owner TONGJI UNIV
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