Combined self-control membrane bioreactor and method for treating low-temperature low-turbidity high-chroma high-ammonia nitrogen source water using same

A membrane bioreactor and composite technology, which is applied in the direction of sustainable biological treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of high cost and low processing capacity, so as to reduce the treatment cost and improve the applicability Strong, reduce the effect of equipment wear

Active Publication Date: 2012-10-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high cost and low processing capacity in the existing low-temperature, low-turbidity, high-color, and high-ammonia-nitrogen water treat

Method used

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  • Combined self-control membrane bioreactor and method for treating low-temperature low-turbidity high-chroma high-ammonia nitrogen source water using same
  • Combined self-control membrane bioreactor and method for treating low-temperature low-turbidity high-chroma high-ammonia nitrogen source water using same

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specific Embodiment approach 1

[0011]Specific embodiment 1: This embodiment is a composite self-control membrane bioreactor consisting of a water distribution tank 1, an inlet pump 2, an inlet pressure gauge 3, an inlet flowmeter 4, an inlet level sensor 5, a dosing device 6, Membrane module 7, membrane bioreactor 8, guide tube 9, aeration pipe 10, gas flow meter 11, air pump 12, first frequency converter 13, outlet water-backwash three-way solenoid valve 14, outlet water constant flow suction Pump 15, second inverter 16, outlet water pressure gauge 17, outlet water flowmeter 18, clean water tank 19, backwash pump 20, third inverter 21, backwash pressure gauge 22, backwash flowmeter 23, mud discharge tee Solenoid valve 24, mud pump 25, mud storage tank 26, mud level sensor 27, mud valve 28, programmable logic controller (PLC) 29 and upper computer (IFIX software) 30, in which the water distribution tank 1 , water inlet pump 2, water inlet pressure gauge 3, water inlet flowmeter 4 and water inlet liquid leve...

specific Embodiment approach 2

[0017] Specific implementation mode 2: This implementation mode is a method for treating low-temperature, low-turbidity, high-color, high-ammonia-nitrogen source water with a composite self-controlling membrane bioreactor. First, low-temperature, low-turbidity, high-color, high-ammonia-nitrogen source water is added to the water distribution tank 1 and the membrane bioreactor 8, and the liquid level of the sewage to be treated in the membrane bioreactor 8 is at the probe end of the upper limit water level probe 5-1 and the lower limit water level probe 5 Between -2 probe ends, the water inlet liquid level sensor 5 feeds back the signal to the programmable logic controller (PLC) 29, at this time the programmable logic controller (PLC) 29 controls the dosing device 6 to start, and the modified palygorskite The flocculation adsorbent is put into the membrane bioreactor 8, and the dosage is 30g / L~40g / L. At the same time, the programmable logic controller (PLC) 29 starts the air pum...

specific Embodiment approach 3

[0019] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the modified palygorskite flocculation adsorbent described in step one is specifically prepared according to the following steps: 1. Purification: firstly, the natural palygorskite is decomposed with Add the natural palygorskite into the deionized water according to the mass ratio of 1: (18~99), and then stir and disperse it at a stirring speed of 1000r / min~10000r / min for 10min~30min to obtain a clay slurry, and then mix the clay The slurry is placed in a centrifuge, and centrifuged at a centrifugal speed of 4000r / min~12000r / min for 10min~20min. After separation, an off-white clay paste is obtained, and dried at a temperature of 80°C~120°C to constant weight, and then After being crushed through a 200 mesh sieve, the purified palygorskite with a particle size of below 200 mesh is obtained; 2. Loading: firstly, chitosan with a deacetylation degree of 85% to 95% is dissolved i...

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Abstract

The invention discloses a combined self-control membrane bioreactor and a method for treating low-temperature low-turbidity high-chroma high-ammonia nitrogen source water using the same, relates to a water treatment reactor and a feed water treatment method, and aims at solving the problem that the existing low-temperature low-turbidity high-chroma high-ammonia nitrogen water treatment methods are high in cost and low in treatment capability. The combined self-control membrane bioreactor consists of a water inlet system, a membrane bioreactor water treatment system, a water outlet system, a backwashing system, a sludge discharge system and a chemical dosing device. The method comprises the steps of: I, firstly starting the combined self-control membrane bioreactor; and II, carrying out full-automatic operation. The combined self-control membrane bioreactor has the following advantages that I, the full-automatic operation is realized, the treatment cost is reduced and the treatment capability is improved; and II, the traditional powdered activated carbon is replaced by modified palygorskite which is low in cost and environment-friendly, so that the soluble organic matters can be effectively removed and the membrane pollution can be effectively slowed down. The combined self-control membrane bioreactor is mainly used for treating low-temperature low-turbidity high-chroma high-ammonia nitrogen source water.

Description

technical field [0001] The invention relates to a feedwater treatment reactor and a feedwater treatment method. Background technique [0002] Compared with other water systems in the country, the northern water system has its own characteristics in terms of geographical location, climate, topographic hydrology, soil type (black soil is rich in organic matter), economic development status, etc.: ①The winter in the northern region lasts for 4 to 6 months , the natural temperature is lower than zero, and the water temperature is below 5°C, and the turbidity in the water is low; ②Rivers often flow through mountainous and hilly areas, where forests are widely distributed, and the soil is black soil, chernozem and grass bedding soil (that is, broadly defined black soil), with a high degree of erosion, is one of the important sources of sediment and non-point source pollution in the river basin; ③ non-point source pollution accumulates in winter, releases in spring, and concentrate...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/02G05B19/05C02F101/16
CPCY02W10/10
Inventor 于水利孙楠时文歆衣雪松
Owner HARBIN INST OF TECH
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