Table 5. Main Cations and Anions in Wastewater after the HTD Process (mg/L).

samples	Na+	Mg2+	Ca2+	K+	PO43–	SO42–	NO3–	Cl–
HTD150	572.24	55.52	53.52	25.36	21.77	432.85	28.94	7.88
HTD200	744.01	98.42	101.25	65.91	18.63	395.45	42.76	10.57
HTD250	899.63	121.56	345.89	92.16	23.85	259.73	55.21	9.67
HTD310	1120.56	151.08	742.60	133.58	19.78	153.42	57.99	12.11