Could you provide more information as to how much sand, how large is your pet, and when he/she ate the sand? Is he/she vomiting or acting painful, or did this just happen. This information will help determine what may be the best course of action.
Ok this information was posted after I began my response....I'll look more at what you posted.
Depending on the amount of sand ingested, this may have caused him to have an impaction. I would recommend witholding food right now, and if he is NOT vomiting liquids, you can try giving him 2 to 3 ounces of Mineral oil. This MAY help loosen the sand. If he vomits this, or is vomiting water, do not give him more. This may result in him aspirating (sucking the oil into his lungs) and can cause serious problems. If he is keeping liquids down, you can also use 50 to 100 mg of Dioctyl sodium sulfate (marketed under many brand and generic names over the counter as a STOOL SOFTENER). This will cause diarrhea. If he continues vomiting or acts weak or lethargic, you will need to have him checked by a veterinarian, and they will likely want to do x-rays. This will determine if medical or surgical intervention is needed. Also there are new anti-vomiting medications available through a veterinarian that may be helpful.
I hope that this helps.
I saw that you added the specifics while I was asking for more information. Unless you added more specifics than are listed in your original edited posting, in which case I have not received this information.
Let me know if I can provide further help or information.
If he only ingested a small amount of sand off of his nose, then an impaction is not very likely. This may have caused some irritation to his stomach and resulted in the vomiting. The vomiting also could be completely unrelated to the sand ingestion as well, and witholding food for 12 to 24 hours may stop the signs. If he continues to vomit, or cannot keep water down, then he may need to be seen by a veterinarian. Again, a small amount of sand should not cause more than GI irritation and does not require treatment with stool softeners or mineral oil. I apologize for any confusion in this matter and hope that this is more helpful.