Highly difficult wastewater conditions with values exceeding limits; seeking help
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Conditions: 1. COD must be reduced to 15,000, and ammonia nitrogen to 1,500, so that they meet sewer discharge standards. 2. The theoretical maximum water volume is 100 m3/d. In practice, it is usually 6–10 m3/d; there are also periods of full capacity, as well as times when no water is produced for several days or even a whole month. The water volume fluctuates significantly. 3. The space is limited, less than 300 square meters. I’m seeking advice from experts: 1. Are there any established physical-chemical methods that can address this type of water quality issue? 2. The biochemical method certainly entails a long process route; is there enough space, even if the setup is made more compact? 3. If sludge is used, and the water volume remains very low for a long time – or no water is added for 10 days or even half a month – is the cost of supplying microorganisms high? Will there be major problems with the system?
This post was last edited by zhaolijun on 2016-5-4 at 18:59. It’s not easy to achieve compliant emissions in terms of environmental protection; no investment of real money can lead to any results. In other words, meeting the standards means spending money on water treatment. The space available to you is too small. Based on your description, a collection tank or a regulating tank is necessary; such tanks can be built underground, with water treatment facilities constructed above them ； Based on your description, the SBR process is a more suitable option; this process can operate intermittently, achieves a high removal rate of ammonia nitrogen, and eliminates the need for physical-chemical treatment steps, with the water going directly into the biological SBR stage ； Without knowing the quality of your water and the composition of its pollutants, I cannot provide you with specific advice. It is recommended to work with an environmental protection company to conduct a thorough analysis of the water samples, followed by the development of an appropriate treatment plan.