NOVELTY - An energy saving and industrial recycling of straw pulp, paper waste, and used lead-acid battery comprises performing precipitate sludge filter press after adding water and mixing sulfuric acid, and performing neutralization reaction; secondary lead smelting of exhaust heat recovery, exhaust rich lead dust and sulfur dioxide, carbon dioxide, water vapor component; dedusting with exhaust gas, spraying slightly alkaline water and desulfurizing, performing decarbonization treatment; and dissolving sodium sulfite desulfurization product in water.    USE - Energy saving and industrial recycling of straw pulp, paper waste, and used lead-acid battery.    ADVANTAGE - The method realizes two distant industry energy sources for complementary use.    DETAILED DESCRIPTION - Energy saving and industrial recycling of straw pulp, paper waste, and used lead-acid battery comprises (A) performing precipitate sludge filter press after adding water and mixing sulfuric acid, and performing neutralization reaction; (B) performing sludge sedimentation after drying filter press into smelting furnace and smelting and recovering lead; (C) performing flocculants sedimentation with sedimentation mud rich in lignin, sugar, sodium sulfate, sodium hydroxide and lead dust and other ingredients; (D) using secondary lead smelting process of high temperature exhaust gas; (E) secondary lead smelting of exhaust heat recovery, exhaust rich lead dust and sulfur dioxide, carbon dioxide, water vapor component; (F) dedusting with exhaust gas, spraying slightly alkaline water and desulfurizing, performing decarbonization treatment; and (G) dissolving sodium sulfite desulfurization product in water, putting lime, calcium carbonate, sodium carbonate and lime and performing precipitation reaction. The step (A) comprises repeatedly recycling straw pulp and paper waste generated during first internal filter flocculation; putting unrecycled waste alkali liquor concentrated alkaline wastewater into collection tank, performing flocculent precipitation, transporting sludge pump to filter press sludge sedimentation equipment, and performing pressure filtration; recovering filtrate in alkaline waste water collection tank, performing precipitate sludge filter press after adding water and mixing sulfuric acid, and performing neutralization reaction; and precipitating mud at pH value close to neutral, and performing second filter press filtrate and recovering alkaline wastewater in collection tank. The step (B) comprises dismantling and concentrating acid-containing wastewater containing lead used lead-acid batteries and battery plates into acidic waste water collection tank, performing flocculant precipitation treatment, performing sludge sedimentation after drying filter press into smelting furnace and smelting; and recovering lead, collecting filtrate into acid waste water collection tanks. The step (C) comprises transporting materials in alkaline waste water collection tank and acidic wastewater collection tank by pumps to be processed in pool, performing secondary lead smelting desulfurization, and circulating water; controlling ratio of two waste waters as much as possible during and after deployment of weak alkaline; performing flocculants sedimentation with sedimentation mud rich in lignin, sugar, sodium sulfate, sodium hydroxide and lead dust and other ingredients, and drying filter press into smelting furnace; burning organic components, melting lead and recycling, and discharging inorganic components into pool; and depending on water quality and waste water flocculation after, performing purification treatment to determine whether if water is quite clarified water can be used directly as desulfurization for recycling and if water quality is poor, the organic component content is high; pumping into aeration tank aeration oxidation treatment, performing flocculent precipitation again, drying sludge filter press into lead smelting furnace for recycling; performing water purification treatment for desulfurization cycle; and clarifying and flocculating after acidic water, adding desulfurization lime or caustic soda, so water becomes weak alkaline. The step (D) comprises using secondary lead smelting process of high temperature exhaust gas to heat recovery production of high temperature and pressure steam, transporting pulp and paper straw cooking workshop, drying desulfurized products to achieve heat for secondary lead smelting straw pulp and paper, to achieve complementary use of energy.