Reuse of deeply hydrolyzed wastewater
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The pH value of the wastewater after deep hydrolysis is 4.0–5.0; how can it be used safely in the jacket of a gas stove?
Ammonia can be reduced to below 10 ppm, and urea can be reduced to below 5 ppm; after heat recovery through a hydrolysis heat exchanger, it can be used as feedwater for low-pressure boilers. If funding is not a concern, the deeply hydrolyzed wastewater can be treated further – using a newly installed condensate recovery system (mainly mixed-bed reactors) – to make it suitable as boiler feedwater. Before entering this system, a cooler must be installed to cool the high-temperature wastewater resulting from the hydrolysis process.
Since the waste liquid contains oxygen, iron, and hardness, it requires further treatment before it can be utilized; otherwise, it can cause corrosion
You can consult the Xuzhou Water Treatment Research Institute; they are experts in this field