Anaerobic reaction device and processing method for 1,4-butanediol chemical wastewater

The technology of an anaerobic reaction device and treatment method is applied in the field of 1,4-butanediol chemical wastewater treatment device, which can solve the problems of high investment and operation cost of aerobic process, and achieve improved biological treatment performance and good operability , The effect of reducing the cost of wastewater treatment

Inactive Publication Date: 2013-02-13
博瑞德环境集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for enterprises that actually produce 1,4-butanediol chemical products, they are usually located in industrial parks, and their wastewater discharge can meet the discharge standa

Method used

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  • Anaerobic reaction device and processing method for 1,4-butanediol chemical wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 The shown 1,4-butanediol chemical wastewater anaerobic reaction treatment device 3 includes a water inlet distributor 4 arranged at the bottom of the device, an anaerobic sludge bed 5 in the middle and a three-phase separator 6 at the top, which are connected in sequence , the anaerobic sludge bed 5 is composed of a sludge bed composed of a large number of anaerobic microorganisms; the anaerobic reaction device 3 is sequentially connected to the sludge discharge pipe 9, the effluent discharge pipe 7 and the biogas discharge pipe 10 from the bottom up The water inlet distributor 4 is connected to the waste water inlet pipe 1, and the water outlet discharge pipe 7 is provided with an outlet return branch pipe 8 connected to the waste water inlet pipe 1.

[0041] In the anaerobic reaction device in this embodiment, a conditioning device is also provided between the wastewater inlet pipe 1 and the water inlet distributor 4 , and the conditioning device include...

Embodiment 2

[0048] 1,4-butanediol chemical wastewater enters the water inlet distributor. After adjusting the pH and adding nitrogen, phosphorus nutrients and trace elements, it is input into the anaerobic sludge bed. The COD of the incoming wastewater is 21,128mg / L. After conditioning, the pH value of the effluent from the water inlet distributor is 7.4, where COD:N:P is 420:5:0.8. The sludge concentration in the anaerobic sludge bed is 50g / L, the hydraulic retention time is 5 days, and the effluent reflux ratio of the anaerobic reactor is 150%.

[0049] The operating temperature of the entire process of wastewater in this embodiment is 30-32°C. After testing, the pH of the reaction device and the effluent was 6.7~7.0, and the COD was 786mg / L.

Embodiment 3

[0051] The 1,4-butanediolization waste water enters the water inlet distributor. After adjusting the pH and adding nitrogen, phosphorus nutrients and trace elements, it is input into the anaerobic sludge bed. The COD of the incoming wastewater is 19,879mg / L. 510:5:1.1. The sludge concentration in the anaerobic sludge bed is 70g / L, the hydraulic retention time is 2.8 days, and the effluent reflux ratio of the anaerobic reactor is 200%.

[0052] The operating temperature of the whole waste water process in this embodiment is 34-36°C. After testing, the pH of the reaction device and the effluent was 6.8~7.1, and the COD was 1280mg / L.

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Abstract

The invention relates to an anaerobic reaction processing device and method for 1,4-butanediol chemical wastewater. The anaerobic reaction device internally comprises an inlet water distributor at the bottom of the device, an anaerobic sludge bed in the middle of the device and a three-phase separator at the top of the device, which are communicated with one another in sequence, wherein the anaerobic sludge bed consists of s sludge bed body formed by a great amount of anaerobic microorganisms; the anaerobic reaction device is sequentially connected with a sludge outlet pipe, a water outlet pipe and a methane outlet pipe from bottom to top; the inlet water distributor is connected with a wastewater inlet pipe; and the water outlet pipe is provided with an outlet water return branch connected with the wastewater inlet pipe. The anaerobic reaction processing device can be used for processing the wastewater to obtain biomass energy methane. After being processed by the anaerobic reaction processing device and method, the high-concentration production wastewater can meet the requirements on discharge of nanotubes, or the difficulty and cost of following aerobic treatment can be reduced. The method is stable in operation, is high in efficiency, can ensure the stable quality of outlet water, can be used for facilitating automatic control, management and operation, and is low in operation cost.

Description

technical field [0001] The invention relates to a waste water treatment device and technology, in particular to a treatment device and method for 1,4-butanediol chemical waste water. Background technique [0002] 1,4-Butanediol chemical wastewater has complex components, high biological toxicity, and is difficult to degrade. The COD concentration of wastewater is usually 5000~30000mg / L. At present, the methods for treating 1,4-butanediol chemical wastewater mainly include: anaerobic + anoxic + aerobic, SBR process, etc., and mainly treat wastewater with COD below 1000mg / L, but for COD above 5000mg / L There are few reports on the treatment of high concentration wastewater. [0003] Patent 200710077937.9 provides a treatment method for 1,4-butanediol chemical wastewater, but this method biochemically treats the influent water (water out of the adjustment pool) COD cannot be greater than 1000mg / L, and must be diluted or enter the accident pool when the concentration is high Ad...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F9/14C02F103/36
CPCY02E50/30Y02W10/10
Inventor 严月根凌明袁妤叶国祥
Owner 博瑞德环境集团股份有限公司
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