Wastewater Reuse Technology
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What are the current wastewater reuse technologies and how are they operating?
This is a topic of energy conservation and environmental protection, and I hope everyone will speak out enthusiastically. GE now has a process for evaporating and separating soluble salts, but I don’t know how effective it is. I personally think: Wastewater can be used to prepare coal-water slurry for boilers.
Most wastewater is too salty. It can still be used to flush toilets. It can also be used to cool furnace ashes. Remove flue gas dust.
The concentrated water produced by our company's original desalted water is discharged externally, and is later used as raw water for the concentrated water recovery device (to supplement part of the primary water) and as circulating water for the air cooler, with good results.
The sand filtration + ultrafiltration process is used for wastewater reuse and is widely used in some industries with good results. The specific situation depends on the nature of the wastewater to determine the purpose of reuse. It is generally used for non-production water such as landscaping, car washing and toilet flushing, and is also used for production water.
There are many directions and technologies for wastewater reuse! For example, after secondary biochemical treatment of wastewater from the slaughtering industry, the reclaimed water after sand filtration and disinfection can be reused for flushing, greening, car washing, toilet flushing and other purposes in the slaughter pens. After treatment, most of the electroplating wastewater can be reused in the production process and does not need to be discharged.
Haha, the topic of the original poster is interesting. For wastewater reuse, what kind of wastewater should we first determine? What is the composition of wastewater? Not all wastewater can be reused. There is also an issue of economic value. It is impossible to reuse wastewater regardless of cost. We can consider turning waste into valuable wastewater, making full use of resources and gaining good recognition from society. If there is no use value, don't reuse it, just flush it down the toilet.
For highly concentrated salty wastewater, there seems to be no other good method except evaporation.
Isn’t the issue of wastewater reuse too big? If there is no use value, don't reuse it, just flush it down the toilet.
At present, most new projects require absolutely zero emissions, so wastewater reuse may only evaporate.
Generally, wastewater can only be used for flushing purposes after reuse. If water is needed for boilers, etc., the reused water needs to be treated according to water standards before it can be used. In short, water must be treated according to water use standards before reuse.
One of the main sources of wastewater is industrial wastewater. Regarding the substances contained in industrial wastewater, appropriate methods must be adopted to treat it within the dischargeable standards.
Waste water is industrial and domestic wastewater. The treatment methods of industrial wastewater are complicated. I know that there are: 1 Pharmaceutical industry wastewater 2 Metallurgical industry wastewater 3 Nuclear industry wastewater 5 Chemical industry wastewater 6 Petroleum processing industry wastewater 7 Mining industry wastewater and so on. Treatment method: Sand filtration--flotation--neutralization--precipitation--biochemistry--membrane separation