. 2019 Nov 22;16(23):4663. doi: 10.3390/ijerph16234663

Table 2.

Basic physical and chemical properties of the domestic wastewater and the ingredients in artificial wastewater.

Concentration (mg/L)	NH₄⁺-N	TN		PO₄^3–P	TP		pH
Domestic sewage	13.16	22.1		N.D.	2.0		7.86
Artificial domestic sewage	15.0	25.0		2.0	2.5		7.4
Artificial animal farm wastewater	200	250		15	23		7.4
National standard for Class V water ^a	2.0	2.0			0.2–0.4		6-9
Ingredients (g/L)	Ca(NO₃)₂·4H₂O	K₂NO₃	NH₄Cl	KH₂PO₄	Urea	CaCl₂	MgCl₂
Artificial domestic wastewater	62.4	72.6	105	21.9	16.2	0.004	0.004
Artificial animal farm wastewater	627	728	1055	234	162	0.022	0.022

Note: ^a environmental quality standard for surface water established by China (GB3838-2002).