Dumping black tank - for stationary travel trailer

We built a small septic on our wilderness property like this. 55 gal drum with holes punched into it with pick axe and dig hole 2x size of drum. Put drum upside down in hole and cut a hole for the pvc pipe. Fill the area around the drum with 2 inch rock and bury it in. We have used ours for years. Keep lots of septo-bac or similar agent going into it.