An alternate circulation high ammonia nitrogen wastewater treatment and recovery method and system equipment
A technology of alternating circulation and waste water treatment, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of affecting the use effect, no breakthrough in treatment methods, and inability to maintain the effect for a long time, etc. problems, to achieve the effect of low investment per ton of water and high economic benefits
Active Publication Date: 2015-07-29
湖南水木科技有限公司
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Problems solved by technology
[0009] Although the above-mentioned patents have proposed the treatment of ammonia nitrogen wastewater, they still have not broken through the conventional treatment methods, and lack the ability to cycle operations. Therefore, there are problems that the treatment cannot maintain the effect for a long time, and it is often necessary to stop operations for maintenance, etc., which affects actual use. effects, which need to be further improved
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Embodiment 1
[0035] A process and equipment for the treatment and recovery of high ammonia nitrogen wastewater by a gas-liquid separation membrane, which includes a mixer, a high-efficiency fiber filter, a security filter, a feed-liquid circulation tank, a backwash system, a dosing system, and a gas-liquid separator , Ammonium sulfate circulation tank, ammonium sulfate evaporation pool. High ammonia nitrogen wastewater must first adjust the pH value, which is generally completed with sodium hydroxide. The sodium hydroxide and wastewater are fully mixed through the static mixer in the sump. After adjustment, the appropriate value of the pH value is between 10.5 and 11. During the period, the display of the PH value is completed by the PH meter, which can be displayed at any time. The PH-adjusted water enters the high-efficiency fiber filter with a cut-off precision of 100 μm, and the filter material is 20 cm polypropylene silk balls. The backwash water returns to the original water pool (ta...
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The invention relates to an alternative circulation high-ammonia-nitrogen wastewater processing and recovering method, and a system apparatus thereof. The method comprises following steps: adjusting the pH value of high-ammonia-nitrogen wastewater to 10.5-11 through a pH value adjusting device, carrying out two-stage filtration of the pH-adjusted high-ammonia-nitrogen wastewater through a two-stage filter, allowing the two-stage filtered wastewater to enter one of two material liquid circulation tanks composing a material liquid circulation system, changing to the injection of the wastewater to the other one of the two material liquid circulation tanks after the one of the two material circulation tanks is full of the wastewater, conveying the material liquid circulation tanks full of the two-stage filtered wastewater to a gas-water separation membrane system, allowing the material liquid circulation tanks to be combined with the gas-water separation membrane system to form a circulation system for multi-time membrane separation circulation processing, absorbing ammonia nitrogen in the gas-water separation membrane system by an acid absorption circulation liquid in the processing process of the gas-water separation membrane system, conveying filtered water processed after each-time membrane filtration to the material liquid circulation system until the filtered water processed through the membrane filtration reaches processing requirements, and discharging by the material liquid circulation tanks.
Description
technical field [0001] The invention relates to a waste water treatment and recovery process and equipment, more specifically to a process method and system equipment for treating high ammonia nitrogen waste water and recovering ammonia nitrogen by using a gas-liquid separation membrane in an alternate cycle, and belongs to the technical field of chemical industry. Background technique [0002] At present, with the rapid development of chemical fertilizer, petrochemical and other industries, the resulting high-ammonia-nitrogen wastewater has also become one of the constraints on the development of the industry; it is reported that in 2001, there were as many as 77 red tides in my country's sea areas, and ammonia nitrogen is an important cause of pollution. One, especially the pollution caused by high-concentration ammonia nitrogen wastewater has become the main cause of environmental pollution in our country. Therefore, the economical and effective control of high-concentrati...
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IPC IPC(8): C02F9/04C01C1/24
Inventor 刘奇军罗奎黄弦
Owner 湖南水木科技有限公司