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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

Inactive Publication Date: 2011-04-20
SHANGHAI LIGHT IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] No matter which method is used to treat lead-acid battery wastewater, the current producers have the phenomenon of waste of resources, such as direct discharge of wastewater that meets the standard

Method used

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  • Method for recycling waste water of lead-acid storage battery
  • Method for recycling waste water of lead-acid storage battery
  • Method for recycling waste water of lead-acid storage battery

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Embodiment Construction

[0034] The method for recycling lead-acid battery wastewater according to the embodiment of the present invention includes two parts: a pre-treatment process and a post-treatment process. The pre-treatment process is mainly to enable the treated wastewater to be discharged or reused up to the standard, and the post-treatment process is mainly to perform advanced treatment to produce pure water that is directly used in production.

[0035] figure 1 It shows the pre-treatment process flow in the lead-acid battery wastewater reuse method according to an embodiment of the present invention. image 3 It shows the pre-processing equipment in the lead-acid battery wastewater recycling method according to an embodiment of the present invention. Refer below figure 1 and image 3 Shown describes the pre-treatment process.

[0036] refer to figure 1 As shown, the equipment 100 used in the pre-treatment process includes a water collection tank 101, a reaction tank 102, a sedimentatio...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F9/06C02F1/66C02F1/52C02F1/44C02F1/28C02F1/72C02F1/50C02F1/70C02F1/42C02F1/469
Inventor 李德良王英华
Owner SHANGHAI LIGHT IND RES INST
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