System for treating acidic industrial wastewater
An industrial wastewater and acidic technology, applied in the direction of sustainable biological treatment, biological water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of large area, high cost, long separation time, etc., and achieve power consumption less, low maintenance and operating costs, and good ecological benefits
Active Publication Date: 2015-01-14
ANHUI POLYTECHNIC UNIV
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Problems solved by technology
However, the above-mentioned methods have shortcomings. The dosage of the neutralizing agent in the neutralization method is not easy to grasp, which makes the pH value of the drainage unstable and the cost is high. The subsequent separation time is long and the floor area is large.
Activated carbon, the most commonly used adsorbent in the adsorption method, is very expensive, and the treatment efficiency for organic matter is not high
The SRB method is often limited by high concentrations of metal pollution, which also reduces its efficiency
However, methods such as electrolysis, electrodialysis, ion exchange, and solvent extraction generally have defects such as strict process conditions, high processing costs, and incomplete removal of heavy metals.
Method used
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[0027] The specific implementation manner of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings.
[0028] Such as figure 1 with figure 2 As shown, the ecological system used to treat acid industrial wastewater does not need to add chemicals. The system includes a sedimentation adjustment tank 1, a porous concrete reaction tank 2, a constructed wetland 3, and a water outlet well 4, which are connected in sequence through connecting pipes; specifically, the sedimentation The upper part of the regulating tank 1 is connected with the lower part of the porous concrete reaction tank 2 through the first connecting pipe, the upper part of the porous concrete reaction tank 2 is connected with the upper part of the constructed wetland 3 through the second connecting pipe, and the lower part of the constructed wetland 3 is connected with the outlet well 4 The lower parts are connected through the thi...
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Abstract
The invention discloses a system for treating acidic industrial wastewater. The system comprises a sediment regulation tank, a porous concrete reaction tank, an artificial wetland and a water outlet well, wherein the upper part of the sediment regulation tank is communicated with the lower part of the porous concrete reaction tank through a first communicating pipe; the upper part of the porous concrete reaction tank is communicated with the upper part of the artificial wetland through a second communication pipe; the lower part of the artificial wetland and the lower part of the water outlet well are communicated through a third communicating pipe. The sediment regulation tank, the porous concrete reaction tank, the artificial wetland and the water outlet well are sequentially reduced in arrangement height. The system disclosed by the invention is high in treatment efficiency on the acidic industrial wastewater, good in ecological benefit and low in maintenance and operation cost.
Description
technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a system for treating acidic industrial wastewater. Background technique [0002] Acidic wastewater is a common form of industrial wastewater, mainly from mining, metallurgy, electroplating, tanning and pharmaceutical industries. Extremely acidic, high levels of toxic metals and rich SO 4 2- Content is an important characteristic of this type of wastewater. Acidic wastewater will corrode drainage pipes and structures. If it is discharged directly into the environment without treatment, the water quality will gradually acidify, heavy metals will exceed the standard, and endanger crops and aquatic organisms. Therefore, harmless treatment must be carried out before discharge. [0003] At present, there are many methods for treating acidic industrial wastewater, including chemical neutralization, adsorption, and microbial methods. Among them, the drug neutralization meth...
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IPC IPC(8): C02F9/14C02F3/32C02F1/66C02F1/28
CPCY02W10/10
Inventor 徐大勇徐建平裘秀群李文蔡昌凤张冬冬江文
Owner ANHUI POLYTECHNIC UNIV