Method for recycling waste water of lead-acid storage battery

A lead-acid battery, waste water technology, applied in separation methods, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve problems such as waste of resources, and achieve the effects of reducing burden, improving water quality, and reducing lead ion content
CN102020374AInactive Publication Date: 2011-04-20SHANGHAI LIGHT IND RES INST
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI LIGHT IND RES INST
Publication Date
2011-04-20
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a method for recycling waste water of a lead-acid storage battery, which is used for realizing harmless treatment of the waste water of the lead-acid storage battery and recycling of water resources. The method comprises the following steps of: inputting lead-containing waste water into a reaction tank, adding an organic heavy metal complex precipitant or a biological precipitant into the reaction tank and adding a coagulant aid and a flocculating agent for reacting so as to realize adsorption or complexation of lead ions; inputting reacted waste water into a precipitation tank, precipitating the adsorbed or complex lead ions into sludge on the lower part of the precipitation tank and outputting supernatant; adjusting the pH value of the supernatant to a target range and outputting the supernatant serving as primary treatment water; and performing reverse osmosis treatment on the primary treatment water to remove salt in the waste water and outputting advanced treatment water serving as water for production of storage batteries.
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Description

technical field

[0001] The invention belongs to the field of accumulator production, and in particular relates to resource recovery and utilization of accumulator production wastewater. Background technique

[0002] During the production process of batteries, a large amount of lead-containing wastewater will be generated, and the lead content exceeds the national standard by dozens of times. Due to the serious harm of lead, as well as the increasingly serious problems of environmental pollution and resource shortage, people pay more and more attention to the treatment of lead-acid battery wastewater. Therefore, what method to use to treat lead-acid battery wastewater has become an important research topic. In addition, due to the strengthening of people's awareness of environmental protection in recent years, as well as the increase in production costs and the intensification of market economic competition, companies have to consider saving and recycling raw material costs, ...

Claims

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