Novazone, a Livermore start-up that provides a way to clean and disinfect food and water using ozone technology, has raised $7 million in a second round of financing.

Chrysalix Energy led the round with participation from existing investors, Foundation Capital and Grauer Capital. In addition, Greg Sullivan, managing director of Chrysalix Energy, has joined Novazone’s board of directors.

Last year, the company raised $10.6M in a first round. He’s part of what we wrote about the company at the time:

It uses a different technology: ozone, a powerful disinfectant, less effective at removing chemicals like arsenic, but useful in eradicating all kinds of other pathogens.

Novazone’s process squeezes oxygen out of regular air, and converts it to ozone. The process creates heat, which is bad because it causes ozone to revert back to oxygen too quickly. So Novazone uses patented technology, based on thermoelectric cooling methods developed by NASA’s space shuttle program, to cool the production process.

Existing ozone-creating technologies generate more heat and have less efficient cooling processes, according to David Cope, the company’s chief marketing officer. Ozone is preferred to chlorine and other disinfectants, too. It was approved by the U.S. Department of Agriculture for use on food in 2001, and is certified as organic.

Novazone has also signed up major customers, including Coca-Cola, Pepsi and Kimberly-Clark. Its ozone generator is the size of a refrigerator. The company says it has 200 customers, in 15 countries.

It too is benefiting from an injection of venture capitalist-like urgency. Founded in the mid-1990s, it languished under its prior management. Then Warren Weiss, a venture capitalist with Silicon Valley venture firm Foundation Capital, led a $10.6 million investment in the company last month. On Thursday, the entire management team flew up to Washington state, where apple and cherry growers are looking for ways to meet demands from customers — from Taiwan to Wal-Mart and Costco — for more chemical-free ways of keeping the fruit clean and fresh.

The company has 30 people and is hiring, said Cope.