Comprehensive analysis of wastewater containing hydrogen sulfide and ammonia nitrogen

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I would like to ask everyone for advice regarding the treatment of wastewater containing hydrogen sulfide and ammonia. (This wastewater is a by-product of coal-to-oil production and is generated after hydrogenation.) The sulfur content in this wastewater is approximately 26,000 mg/L, while the ammonia content is around 31,000 mg/L. There are also small amounts of phenols present, mainly alkyl phenols, at a concentration of 2.47 mg/L, along with other substances as well. Now I would like to conduct a comprehensive analysis of the solution – that is, to find out what exactly is present in it, and in what valence state or as what compounds they exist. I’m not sure if there are any testing laboratories that can do this; I’m in Beijing, so I prefer a lab that is located nearby, but those based in other places are also acceptable.