The Aruch Hashulchan died in 1908 (source, see footnote 9), and according to the article you brought, Rav Zevin was born somewhere between 1886-1888 (in fact, it was 1888). Therefore, he could have received Semicha from the Aruch Hashulchan when he was in his late teens or early 20s.
On the first page of Yoreh Deah - וכן המנהג שאין הנשים שוחטות - Rav Schechter quoted from The Rav (Rav Joseph B. Soloveitchik) that this is because the shochet would commonly act as an assistant rabbi, and since that is assur, it became forbidden for women to be the town shochet.
Perhaps, the sense is that in both rabbinic ordination and korbanot there is a transfer of one's representation to the other. In the case of rabbinic authority, the already ordained rabbi confers his authoritative status to another.
Somewhat similarly, the one who brings an offering, as explained/cited by Nachmanides (Leviticus 1:9), uses the offering as a ...
This is an amazing program which I have benefited from immensely. One can recieve Semicha on Hilchos Shabbos and is under Rav Yehonason Gefen and is under the guidance of Rav Yitzchok Berkowitz shlit"a.
The link is: https://kinyanhilchosshabbos.com/
An option that I know people tried - including those with learning issues - is https://www.iyunhalacha.org/programs/
As they write at the bottom:
Yeshivas Iyun Halacha offers Semicha in Hilchos Issur V’heter and Shabbos to those who qualify.
To request a copy of our Semicha requirements email email@example.com
While I'm not affiliated in any way with the ...
You might want to try Yeshivas Pirkei Shoshanim who run an online Semicha course.
First a little about them - they say on their website:
Pirchei Shoshanim and the Shema Yisrael Torah Network provides educational information to anyone interested in learning Halacha and learning more about Judaism, in general. We are committed to helping people learn the ...
One of the most respected rabbis in Baltimore tells that he received smicha from Ner Yisroel's rosh yeshiva, Rav Yaakov Weinberg z"l. The Rosh Yeshiva generally didn't give smicha, the test was usually given by Rav Kulefsky z"l. But this rabbi had never bothered to take the exam, even though he taught one of the regular study groups on the subject at Ner! ...
There is no real semicha nowadays anyways. 'Smicha' was a chain of teachers ordaining students tracing itself all the way back to Moshe Rabbeinu. This chain was purposefully lost due to corruption. Thus, there are no real Halochas of smicha. Today, a rabbi can give a talmid smicha as he sees fit.