A low-temperature anaerobic treatment device for industrial wastewater and its treatment process

An anaerobic treatment device and treatment process technology, which is applied in textile industrial wastewater treatment, anaerobic digestion treatment, aerobic and anaerobic process treatment, etc., can solve the problems affecting microbial degradation, lack of system dynamics and thermodynamics, It does not consider the problem of high-efficiency reflux of the microbial temperature system, and achieves good film-hanging effects, reduced management and operating costs, and high efficiency.

Active Publication Date: 2016-04-06
SHANGHAI HONESS ENVIRONMENTAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the biochemical degradation process of microorganisms, the presence of microbial metabolites will affect the water quality of the effluent and subsequent microbial degradation, and then this anaerobic system does not consider the temperature required by microorganisms and the efficient return of the system
[0013] To sum up, the anaerobic treatment system needs to maintain a high reaction temperature. The current series of anaerobic reactor patents are only for the proper optimization of the water distribution system and the stirring system, and lack the knowledge of the dynamics and thermodynamics of the entire system. Pay attention, especially the need to maintain a certain temperature to maintain the high efficiency of anaerobic

Method used

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  • A low-temperature anaerobic treatment device for industrial wastewater and its treatment process

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Effect test

Embodiment 1

[0050] A chemical company limited company uses alkyl glycoside (APG) series nonionic surfactants, alcohol ether carboxylate (AEC) series anionic surfactants, imidazoline series amphoteric surfactants and other new green products with market prospects, The production of surfactant wastewater is 100 tons / day, the influent COD concentration is 3000-6000mg / L, the effluent COD removal rate is as high as 80% through the low-temperature anaerobic hydrolysis unit (residence time 36h), and the anaerobic system load can reach 4kgCOD / (m3d). In the extreme influent concentration COD=20000mg / L, the effluent COD is less than 6000mg / L, and the removal rate is higher than 70%, which reflects the high treatment efficiency. The overall system temperature is not heated throughout the year. When the temperature is 30 degrees Celsius, the removal rate is higher than 80%; when the temperature is 15-20 degrees Celsius, the removal rate is still higher than 70%.

Embodiment 2

[0052] A US-funded Electric Co., Ltd. adopts this low-temperature anaerobic hydrolysis unit for comprehensive emulsion and release agent wastewater. When the influent concentration is 3000-4000 mg / L and the influent temperature changes from 15 to 25 degrees Celsius, the removal rate of the anaerobic unit Above 75%, BOD / COD increased from 0.2 to 0.35.

Embodiment 3

[0054] A textile printing and dyeing enterprise produces a large amount of printing and dyeing wastewater. The volume of wastewater is 200 tons per day. The low-temperature anaerobic hydrolysis unit is used. When the influent concentration is 1500-2000mg / L and the chroma is 400-600 times, the anaerobic load adopts When the temperature is 3kgCOD / (m3d), when the temperature is 15-32 degrees Celsius for 365 days a year, the COD removal rate of the effluent is 30%, the chroma removal rate is as high as 90%, and the BOD / COD is increased from 0.18 to 0.4 or more

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Abstract

The invention relates to an industrial wastewater low-temperature anaerobic treatment device and a treatment process thereof. Industrial wastewater suitable or processing include chemical synthetic pharmacy wastewater, fine chemical engineering production wastewater, textile industry wastewater, washing industry wastewater and Lurgi gasifier process wastewater, intake water COD concentration suitable or processing is smaller than 10000 mg / L, TDS is smaller than 6000 mg / L, and the wastewater temperature is not lower than 15 DEG C. The industrial wastewater low-temperature anaerobic treatment device mainly comprises a low-temperature anaerobic hydrolysis unit and a wastewater backflow system. A traditional anaerobic reactor needs operate in a stable temperature range. The industrial wastewater low-temperature anaerobic treatment device and the treatment process achieve the purposes of reducing the heating temperature of the wastewater and keeping efficient reaction efficiency through the low-temperature anaerobic hydrolysis unit under the realistic condition that a typical low-temperature industrial wastewater anaerobic system difficulty achieves stable high efficiency, especially under the condition that the efficiency is obviously reduced in the temperature reduction process. The treatment process is efficient, simple in operation and high in adaptability and is an industrial wastewater low-temperature anaerobic technology having development potential.

Description

technical field [0001] The invention belongs to the field of waste water treatment, in particular to an anaerobic treatment device for industrial waste water and a treatment process thereof. Background technique [0002] With the development of the national economy, the depth and measures of environmental governance at the national level are increasing. On the premise of effectively controlling non-point source pollution, the investment and construction speed of sewage stations have been increased, and urban pollution non-point source control and sewage pipe network have been realized. All over the situation, to curb the occurrence of large-scale pollution. [0003] Anaerobic treatment is an important way to recover energy and reduce aerobic load. With the increase in manpower, electricity, and steam costs, anaerobic pretreatment is an important way to reduce the operating costs of pollution control enterprises and improve treatment efficiency. [0004] At present, the con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/30
CPCC02F3/28C02F3/30C02F9/00C02F2101/301C02F2103/002C02F2103/30C02F2103/34C02F2103/343C02F2301/08
Inventor 王海峰陆林雨郑勇章明王龙
Owner SHANGHAI HONESS ENVIRONMENTAL TECH CORP
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