A printing and dyeing wastewater treatment method and system
A printing and dyeing wastewater treatment method technology, applied in textile industry wastewater treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as poor water removal effect and poor sludge water removal effect, and achieve Improve the effect of water removal and prevent dust
Active Publication Date: 2021-03-30
浙江鑫广环保科技有限公司
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AI Technical Summary
Problems solved by technology
Due to the sludge obtained during the treatment of printing and dyeing sewage, the sludge contains a large amount of water. Generally, the sludge is squeezed and dewatered by a plate and frame filter press or a belt filter press, but the dewatering effect is not good.
Therefore, the existing technology has the problem of poor sludge dewatering effect
Method used
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Embodiment Construction
[0027] The present invention will be made in conjunction with the accompanying drawings and examples, but is not as a basis for the limitation of the invention.
[0028] Embodiment. A printing and dyeing wastewater treatment method, including the following steps:
[0029] In the first step, the printing and dyeing wastewater was fed into the pre-filtered, and the suspended material and floating substances in the printing and dyeing waste water were removed to obtain a liquid;
[0030] In the second step, the A liquid is supplied into the flocculation sedimentation tank, and the a liquid is flocculated in the flocculation sedimentation tank, and the organic matter in the A liquid is settled, and the solid is separated, the B liquid is obtained;
[0031] In the third step, the B liquid is administered in the hydrolyzate tank, and the B liquid is acidified, and the C liquid is obtained;
[0032] In the fourth step, the C liquid is supplied into a good oxygen pool, degrades the organi...
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The invention discloses a printing and dyeing wastewater treatment method and system. Printing and dyeing wastewater is processed through a pre-filtration tank, a flocculation sedimentation tank, a hydrolysis acidification tank, an aerobic tank, an air floating tank, an activated carbon tank and a secondary sedimentation tank, and then processed water is stored in a clean water tank; then sludge in the flocculation sedimentation tank and the secondary sedimentation tank is sent to a sludge recovery tank, the sludge in the sludge recovery tank is sent to a high pressure plate frame filter pressfor pressure filtration to obtain dry sludge and filtered water respectively, the filtered water is returned to the hydrolysis acidification tank through a pipeline, and the dry sludge enters the sludge recovery tank; after the sludge enters the high pressure plate frame filter press, the sludge is subjected to high pressure press filtration, drying and air drying to obtain the dry sludge that enters the sludge recovery tank. The method and system have the advantage of being capable of improving the sludge dehydration effect.
Description
Technical field [0001] The present invention relates to a printing and dyeing wastewater treatment system, particularly a method and system for printing and dyeing wastewater treatment. Background technique [0002] Printing and dyeing enterprises produce a large amount of printing and dyeing wastewater during production, the printed wastewater is rich in suspended materials, dye auxiliaries, polymer compounds, etc., the ingredient is more complicated, and it is necessary to filter, flocculate precipitation, and the pharmacy oxidation, etc. The multi-objective process sequentially removes the pollutants of different ingredients in the printing sewage, and finally the qualified water reached or recycled. Since the printing dyeing sewage is obtained during the treatment process, the sludge contains a large amount of moisture, generally squeezing the sludge by a plate frame filter or a belt filter machine, but the water removal effect is not good. . Therefore, existing technologies ...
Claims
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IPC IPC(8): C02F9/14C02F11/122C02F11/13C02F11/121C02F11/12B02C4/00C02F103/30
CPCB02C4/00B02C2201/06C02F1/001C02F1/24C02F1/283C02F1/52C02F3/02C02F3/28C02F9/00C02F11/12C02F11/122C02F2001/007C02F2103/30C02F2303/06
Inventor 胡其木
Owner 浙江鑫广环保科技有限公司