AI Wastewater Treatment Cases - Page 10

Segregated Collectio

Industrial park discharge standards: compliance at the enterprise outfall does not mean the wastewater treatment plant can handle it.

Multiple industries nationwide (provincial-level and above industrial parks / ch

Pilot to engineering scale (thousands to tens of thousands of m³/d, including ce

In an industrial park, the "sewer discharge standard" is not a standard number but a determination chain: upstream enterprises hold the indirect discharge limits of their industry discharge standards; the park may hold the Class A/B/C three-tier limits in

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Segregated Treatment

Steel pickling and cold rolling wastewater: waste acid is not wastewater, but a stream of diluted hydrochloric acid.

Nationwide multi-industry (integrated steel enterprises / steel rolling processi

Pilot to full-scale engineering (hundreds to tens of thousands of m³/d)

Cold-rolling wastewater is widely recognized as the most difficult wastewater stream to treat in the metallurgical industry, but the difficulty lies not in how toxic the chromium-containing stream is, but in the fact that six streams require six sets of l

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Reclaimed Water Indu

Industrial Reclaimed Water: The standard has consolidated five categories of use into two, yet the real gatekeeper lies in the cooling tower.

Nationwide multi-industry (power / steel / petrochemical and chemical / coal che

Pilot to full-scale engineering (thousands to hundreds of thousands of m³/d)

For industrial reclaimed water reuse, the first thing to clarify is that "reuse water" simultaneously refers to three different things: a set of influent standards classified by use, a set of equipment specifications governing the circulating water itself

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Hot Rolling Turbid C

Hot-rolled turbid circulating water: what is being treated is not water, but iron oxide scale containing 70% iron.

Steel industry (hot-rolled strip / medium plate / wide heavy plate / continuous

Engineering implementation (a single system of approximately 1,900–7,500 m³/h; t

In the same standard GB 50721—2011, clean circulating water (indirect cooling) is assessed based on a concentration ratio of not less than 3.0 and a reuse rate of not less than 97%, while turbid circulating water (direct cooling) does not apply the concen

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Resource recovery fr

Food brewing wastewater: it is not a pollution load, but a carbon source that has been discharged.

Multi-industry nationwide (beer/malt/MSG/fermented alcohol/baijiu/soy products/s

Pilot to engineering scale (individual projects from tens to tens of thousands o

For the same stream of food-brewing wastewater, what is a pollution load that an enterprise must cut COD to 500 mg/L before it can be discharged to the sewer is, at the wastewater treatment plant, a carbon source purchased by the tonne. This paper unpacks

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Treatment and resour

Mine water: a water supply source that is discharged, yet the standards table does not include "salt" as an item.

Major coal-producing regions across China (Shanxi/Shaanxi/Inner Mongolia/Xinjian

Individual projects range from several thousand to tens of thousands of m³/d (th

The same stream of mine water is wastewater that must be treated to meet standards before discharge at the mine site, yet outside the mining area it can serve as a water supply source replacing surface water. This paper disentangles two levels of framing:

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