Built-in micro-interface papermaking wastewater treatment system and method

A papermaking wastewater and treatment system technology, which is applied in the direction of processing wastewater treatment, water/sewage treatment, biological water/sewage treatment, etc., can solve the problem of high reaction temperature, small gas-liquid interface area and insufficient mass transfer time in wet oxidation method To achieve the best treatment effect, fully satisfy the mass transfer space, and improve the mass transfer effect

Active Publication Date: 2020-08-25
NANJING YANCHANG REACTION TECH RES INST CO LTD
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Problems solved by technology

[0003] The chemical composition contained in papermaking wastewater is relatively complex, and the temperature of the wastewater is relatively high. For this reason, the industry adopts a combination of physical, chemical, and biochemical methods for wastewater treatment. The current wet oxidation technology has strong adaptability and effective treatment. It has good advantages, and it is more successful to treat papermaking wastewater by combin

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  • Built-in micro-interface papermaking wastewater treatment system and method

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Embodiment

[0054] refer to figure 1 As shown, it is a treatment system for papermaking wastewater with a built-in micro interface according to an embodiment of the present invention, including a papermaking wastewater tank 10, a grid decontamination machine 20, a regulating tank 30, a centrifugal filter 40, a sedimentation tank 50 and a heat exchanger connected in sequence 70. Preheater 140, wet oxidation reactor 80, gas-liquid separator 90, biodegradation tank 100; wherein, the heat exchanger 70 is provided with a first inlet 71, a first outlet 72, a second inlet 73, a second Outlet 74, the sedimentation tank 50 is connected to the first inlet 71 through the booster pump 60, and the first outlet 72 is connected to the bottom of the wet oxidation reactor 80 through the preheater 140. After the waste water is heat exchanged, it enters the wet oxidation reactor Preheating before 80, the top of the wet oxidizer 80 is provided with an oxidation outlet 81, the oxidation outlet 81 is connected...

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Abstract

The invention provides a built-in micro-interface papermaking wastewater treatment system and method. The treatment system comprises a papermaking wastewater tank, a bar screen machine, an adjusting tank, a centrifugal filter and a sedimentation tank which are connected in sequence, and further comprises a heat exchanger, a preheater, a wet oxidation reactor, a gas-liquid separator and a biodegradation tank, wherein a micro-interface unit used for dispersing broken gas into bubbles is arranged in the wet oxidation reactor, the micro-interface unit comprises a pneumatic micro-interface generator, a gas inlet is formed in the side wall of the wet oxidation reactor, and the gas inlet extends into the pneumatic micro-interface generator through a pipeline. According to the treatment system, the micro-interface unit is arranged in the wet oxidation reactor, so the temperature and the pressure of the papermaking wastewater treatment system are reduced, the consumption of air or oxygen is reduced, and the effects of low energy consumption and high treatment efficiency are achieved.

Description

technical field [0001] The invention belongs to the technical field of papermaking wastewater treatment, and in particular relates to a built-in micro-interface papermaking wastewater treatment system and a treatment method. Background technique [0002] The paper industry is a traditional large water user and one of the important sources of water pollution. The discharge of industrial papermaking wastewater in my country ranks first among all types of industrial discharges. The papermaking industry pollutes the water environment the most seriously. The primary issue of prevention and control is also the primary issue of standard treatment of industrial wastewater in my country. [0003] The chemical composition contained in papermaking wastewater is relatively complex, and the temperature of the wastewater is relatively high. For this reason, the industry adopts a combination of physical, chemical, and biochemical methods for wastewater treatment. The current wet oxidation t...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/72C02F1/74C02F103/28C02F101/30
CPCC02F1/001C02F1/02C02F1/32C02F1/38C02F1/725C02F1/727C02F1/74C02F1/78C02F3/00C02F9/00C02F2001/007C02F2101/30C02F2103/28C02F2303/04C02F2303/26
Inventor 张志炳周政张锋李磊孟为民王宝荣杨高东罗华勋杨国强田洪舟曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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