Disclosed is a Composition and Methods of Use thereof, wherein the composition comprises: a source of halogen, urea and an additional Halogen Stabilizer excluding urea, optionally an Alkali in a concentration sufficient to provide the composition with a pH of more than 10； and Excluding a Bromine Compound optionally stabilized that composition.In addition, a method is disclosed for reducing Biological activity in a process Stream.The Method comprises: providing a composition to a process Stream, where the composition contains a Halogen, urea and an additional Halogen Stabilizer excluding urea, optionally an Alkali in a concentration sufficient to provide such a P composition More than 10 h； excluding a Bromine compound and optionally stabilized that composition.It also relates to compositions and Methods of using them as effective biocidal Agents for Water flows. The composition comprises a source of halogen, halogen stabilizers containing a Carrier species of Sulfur and ammonium salts and alkali / urea. The Species of Sulfur Carrier includes Sulfamic Acid or its Salt equivalent.The relationship between the mixture of nitrogen and sulfur Bearing species of ammonium salts and urea can be optimized in any proportion.To optimize the mixing ratio to halogen Stabilizer and Sulfamic Acid or salts of ammonium sulphamate, produces a synergistic effect which increases the effectiveness of the composition as a biocide and avoid adverse impacts on other Chemical Agents present in the stream of agu (such as Paper additives in the streams of Development of Pulp and Paper).Best of All is that the composition is easy to form and introduce the flow of water in question. Its introduction can be as simple as mixing two containers of Reagents before their introduction into the water stream of the process.Se divulga una composición y métodos de uso de ella, donde la composición comprende: una fuente de halógeno, urea y un estabilizante de halógeno adicional excluyendo urea, opcionalme
