What are the "three wastes" in the soda ash production process?

The three wastes in soda ash production refer to； Waste gas, waste liquid, waste residue. For liquid waste and waste residue, most methods use the method of discharging liquid and solid residue separately, that is, the solid residue is stored in a designated area through methods such as damming, reclamation, and sedimentation tanks. After the waste liquid is clarified and separated, and then through measures such as carbonation or seawater blending or neutralization with acidic wastewater, the pH value and suspended matter content of the waste liquid are controlled within the scope specified by the environmental protection law, and then it can be discharged into rivers, lakes, seas and other waters to achieve harmless discharge.

What are the main components of waste gas, waste liquid, and waste residue? Which expert can I ask to clarify my doubts? Thanks!

What are the three specific wastes in joint alkali production? How to control!

Soda ash companies will produce waste residue, waste gas and waste liquid during the production process.

Three wastes of Lianjia Enterprise: 1. Exhaust gas: Carbonization tower exhaust gas ； Filter exhaust gas ； Dry ammonium tail gas ； Calcined tail gas. All use dust removal (including wet method, electric dust removal, bag dust removal) and then discharge ； 2. Wastewater: AII mud filter press washing water ； Soda filter machine washing water ； Drainage from separator after compressor ； Carbonization tower wash water ； Crystallizer washing water ； Mother liquor heat exchanger washing water ； The filtrate, etc., is partly collected and reused, partly sent to sewage treatment, and partly discharged. 3. Waste residue: The original AII mud has now been recycled.

The three wastes are: Waste gas, liquid waste, solid waste. in: The waste gas mainly includes carbonized exhaust gas, filtered exhaust gas, alkali tank release gas, calciner furnace gas, hydration machine exhaust gas, and dry ammonium furnace exhaust gas in the ammonium chloride section. The waste liquid mainly includes: Separator drainage after compressor, carbonization tower washing water, AⅡ mud filter press drainage, salting out crystallizer washing water, mother liquor heat exchanger washing water, equipment area floor flushing water, etc. The solid waste is mainly ammonia II mud. The carbonized exhaust gas in the exhaust gas, filtered exhaust gas, and alkali tank released gas pass through the comprehensive recovery tower and the distillation exhaust gas recovery tower to recover ammonia and other substances in the exhaust gas. After reaching the emission standards, the CO2 in it can be emptied or recovered as the mid-stage gas for carbonization reaction. The calciner gas and hydration machine exhaust pass through the furnace gas condensation tower and the washing tower, followed by an induced draft fan for emptying or recycling. The tail gas of the dry ammonium furnace in the ammonium chloride section is exhausted after passing through the cyclone and bag dust collector. In the waste liquid, the drainage from the separator after the compressor and the ground flushing water in the installation area enter the sewage pipe network after treatment. ； The washing water of the carbonization tower, the drainage of the AⅡ mud filter press, the washing water of the salting out crystallizer, and the washing water of the mother liquor heat exchanger are collected and used to replenish the mother liquor balance of the system. Solid waste is generally transported by vehicle to be deposited outside the boundary area.

doubt: AII mud contains high salt content, how to recycle it? I heard that some manufacturers secretly buried them. . . . . . . . . .

The three wastes are: Waste gas, liquid waste, solid waste. The waste gas mainly includes carbonized exhaust gas, filtered exhaust gas, alkali tank release gas, calciner furnace gas, hydration machine exhaust gas, and dry ammonium furnace exhaust gas in the ammonium chloride section. The waste liquid mainly includes: The solid wastes such as separator drainage after compressor, carbonization tower washing water, AⅡ mud filter press drainage, salting out crystallizer washing water, mother liquor heat exchanger washing water, and equipment area floor flushing water are mainly carbonized tail gas in the ammonia II mud waste gas. The filtered tail gas and alkali tank release gas pass through the comprehensive recovery tower and the distillation tail gas recovery tower to recover ammonia and other substances in the tail gas. After reaching the emission standards, the CO2 can be evacuated or recycled as the mid-stage gas for carbonization reaction. The calciner gas and hydration machine exhaust pass through the furnace gas condensation tower and the washing tower, followed by an induced draft fan for emptying or recycling. The tail gas of the dry ammonium furnace in the ammonium chloride section is exhausted after passing through the cyclone and bag dust collector. In the waste liquid, the drainage from the separator after the compressor and the ground flushing water in the installation area enter the sewage pipe network after treatment. ； The washing water of the carbonization tower, the drainage of the AⅡ mud filter press, the washing water of the salting out crystallizer, and the washing water of the mother liquor heat exchanger are collected and used to replenish the mother liquor balance of the system. Solid waste is generally transported by vehicle to be deposited outside the boundary area.

Three wastes of Lianjia Enterprise: 3. Waste residue: The original AII mud has now been recycled. How exactly is it recycled?

The three wastes in soda ash production refer to； Waste gas, waste liquid, waste residue.