Please ask a staff member to create a permanent particle emitter. Find the particle that you want by browsing the Minecraft wiki.
Moderators can create a particle emitter using the following command:
/summon AreaEffectCloud ~ ~ ~ {Particle:"NAME_OF_PARTICLE",Radius:0.1f,RadiusPerTick:0f,Duration:2147483647}
In some cases, that command is too long for chat, so you will need to place a command block, place the command in the command block, and then use a Redstone level or torch to activate the command block.
To remove particle emitters within a radius of 10 blocks, use:
/kill @e[type=AreaEffectCloud,r=10]